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Charles L, Elangovan A, Nisha Y, Jafa E, Kate V, Selvarajan S, Kayal S, Ganesh RN, Dubashi B, Penumadu P, Ganesan P. Clinicopathological features and survival outcomes for gastric adenocarcinoma: Real-world single-center data. Indian J Gastroenterol 2023:10.1007/s12664-023-01455-4. [PMID: 37948007 DOI: 10.1007/s12664-023-01455-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 08/22/2023] [Indexed: 11/12/2023]
Abstract
INTRODUCTION Gastric cancer is the fifth most-common cancer and fourth common cause for cancer-related deaths globally. Surgery preceded or followed by chemotherapy or chemoradiotherapy is considered an optimal treatment for locally advanced gastric cancer. This study is a real-world data from a tertiary referral institute in southern India, in its experience with treating gastric adenocarcinoma over a period of four years with a minimum of two-year follow-up. METHODS This was a retrospective analysis of data of patients with histologically proven gastric adenocarcinoma enrolled in the Department of Medical Oncology from 2015 to 2018. The demographic details, presentation, staging, treatment received and outcomes of patients with gastric adenocarcinoma were collected and analyzed in this study. RESULTS Total 488 patients with gastric adenocarcinoma were included for the study. The stage-wise distribution of patients revealed early and locally advanced (45%) and metastatic (55%). The peritoneum and liver were the common sites of metastasis. The treatment distribution of these patients included perioperative chemotherapy followed by surgery (25 [5%]), surgery followed by adjuvant chemotherapy (65 [13%]), surgery alone (16 [3%]), perioperative chemotherapy alone (23 [4%]), palliative chemotherapy (274 [56%]) and supportive care (85 [17%]). The median overall survival for curative, palliative and supportive treatment was 23 (18-28), nine (7.6-10.4) and four (2.7-5.3) months, respectively. The two-year overall survival in the intention to treat population in the primary surgery (n = 81) and perioperative chemotherapy groups (n = 66) was 67.4% vs. 29.9% (p < 0.0001), respectively. CONCLUSION This study highlights the advanced nature of the presentation of gastric cancer patients and the poor rate of treatment completion. The median survival rates in curative patients remain to be dismally poor. The treatment sequence in curable gastric cancer of surgery followed by adjuvant chemotherapy vs. perioperative chemotherapy followed by surgery needs to be explored in our country.
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Affiliation(s)
- L Charles
- Department of Medical Oncology, Regional Cancer Centre, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Archana Elangovan
- Department of Surgical Oncology, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Yadav Nisha
- Department of Medical Oncology, Regional Cancer Centre, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Esha Jafa
- Department of Medical Oncology, Regional Cancer Centre, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Vikram Kate
- Department of Surgery, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Sandhiya Selvarajan
- Department of Clinical Pharmacology, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Smita Kayal
- Department of Medical Oncology, Regional Cancer Centre, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Rajesh Nachiappa Ganesh
- Department of Pathology, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Biswajit Dubashi
- Department of Medical Oncology, Regional Cancer Centre, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India.
| | - Prasanth Penumadu
- Department of Surgical Oncology, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
| | - Prasanth Ganesan
- Department of Medical Oncology, Regional Cancer Centre, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Pondicherry, 605 006, India
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Cederwall B, Liu X, Aktas Ö, Ertoprak A, Zhang W, Qi C, Clément E, de France G, Ralet D, Gadea A, Goasduff A, Jaworski G, Kuti I, Nyakó BM, Nyberg J, Palacz M, Wadsworth R, Valiente-Dobón JJ, Al-Azri H, Ataç Nyberg A, Bäck T, de Angelis G, Doncel M, Dudouet J, Gottardo A, Jurado M, Ljungvall J, Mengoni D, Napoli DR, Petrache CM, Sohler D, Timár J, Barrientos D, Bednarczyk P, Benzoni G, Birkenbach B, Boston AJ, Boston HC, Burrows I, Charles L, Ciemala M, Crespi FCL, Cullen DM, Désesquelles P, Domingo-Pardo C, Eberth J, Erduran N, Ertürk S, González V, Goupil J, Hess H, Huyuk T, Jungclaus A, Korten W, Lemasson A, Leoni S, Maj A, Menegazzo R, Million B, Perez-Vidal RM, Podolyak Z, Pullia A, Recchia F, Reiter P, Saillant F, Salsac MD, Sanchis E, Simpson J, Stezowski O, Theisen C, Zielińska M. Isospin Properties of Nuclear Pair Correlations from the Level Structure of the Self-Conjugate Nucleus ^{88}Ru. Phys Rev Lett 2020; 124:062501. [PMID: 32109090 DOI: 10.1103/physrevlett.124.062501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/27/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
The low-lying energy spectrum of the extremely neutron-deficient self-conjugate (N=Z) nuclide _{44}^{88}Ru_{44} has been measured using the combination of the Advanced Gamma Tracking Array (AGATA) spectrometer, the NEDA and Neutron Wall neutron detector arrays, and the DIAMANT charged particle detector array. Excited states in ^{88}Ru were populated via the ^{54}Fe(^{36}Ar,2nγ)^{88}Ru^{*} fusion-evaporation reaction at the Grand Accélérateur National d'Ions Lourds (GANIL) accelerator complex. The observed γ-ray cascade is assigned to ^{88}Ru using clean prompt γ-γ-2-neutron coincidences in anticoincidence with the detection of charged particles, confirming and extending the previously assigned sequence of low-lying excited states. It is consistent with a moderately deformed rotating system exhibiting a band crossing at a rotational frequency that is significantly higher than standard theoretical predictions with isovector pairing, as well as observations in neighboring N>Z nuclides. The direct observation of such a "delayed" rotational alignment in a deformed N=Z nucleus is in agreement with theoretical predictions related to the presence of strong isoscalar neutron-proton pair correlations.
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Affiliation(s)
- B Cederwall
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - X Liu
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - Ö Aktas
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - A Ertoprak
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
- Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134 Istanbul, Turkey
| | - W Zhang
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - C Qi
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - E Clément
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - G de France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - D Ralet
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - A Gadea
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46980 Valencia, Spain
| | - A Goasduff
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - G Jaworski
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
- Heavy Ion Laboratory, University of Warsaw, ul. Pasteura 5A,02-093 Warszawa, Poland
| | - I Kuti
- MTA Atomki, H-4001 Debrecen, Hungary
| | - B M Nyakó
- MTA Atomki, H-4001 Debrecen, Hungary
| | - J Nyberg
- Department of Physics and Astronomy, Uppsala University, SE-75121 Uppsala, Sweden
| | - M Palacz
- Heavy Ion Laboratory, University of Warsaw, ul. Pasteura 5A,02-093 Warszawa, Poland
| | - R Wadsworth
- Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom
| | - J J Valiente-Dobón
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - H Al-Azri
- Rustaq College of Education, Department of Science, 329 Al-Rustaq, Sultanate of Oman
| | - A Ataç Nyberg
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - T Bäck
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
| | - G de Angelis
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - M Doncel
- KTH Royal Institute of Technology, 10691 Stockholm, Sweden
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - J Dudouet
- Université Lyon, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - A Gottardo
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - M Jurado
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46980 Valencia, Spain
| | - J Ljungvall
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - D Mengoni
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - D R Napoli
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - C M Petrache
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - D Sohler
- MTA Atomki, H-4001 Debrecen, Hungary
| | - J Timár
- MTA Atomki, H-4001 Debrecen, Hungary
| | | | - P Bednarczyk
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - G Benzoni
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
| | - A J Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - H C Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - I Burrows
- STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom
| | - L Charles
- IPHC, UNISTRA, CNRS, 23 rue du Loess, 67200 Strasbourg, France
| | - M Ciemala
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - F C L Crespi
- University of Milano, Department of Physics, I-20133 Milano, Italy
- INFN Milano, I-20133 Milano, Italy
| | - D M Cullen
- Nuclear Physics Group, Schuster Laboratory, University of Manchester, Manchester, M13 9PL, United Kingdom
| | - P Désesquelles
- Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
- CNRS-IN2P3, Universiteé Paris-Saclay, Bat 104, F-91405 Orsay Campus, France
| | - C Domingo-Pardo
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
| | - N Erduran
- Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, 34303, Istanbul, Turkey
| | - S Ertürk
- Department of Physics, University of Nigde, 51240 Nigde, Turkey
| | - V González
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - J Goupil
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
| | - T Huyuk
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46980 Valencia, Spain
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - W Korten
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Lemasson
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - S Leoni
- University of Milano, Department of Physics, I-20133 Milano, Italy
- INFN Milano, I-20133 Milano, Italy
| | - A Maj
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | | | | | - R M Perez-Vidal
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - Zs Podolyak
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
| | - A Pullia
- University of Milano, Department of Physics, I-20133 Milano, Italy
- INFN Milano, I-20133 Milano, Italy
| | - F Recchia
- Dipartimento di Fisica e Astronomia dell'Università di Padova and INFN Padova, I-35131 Padova, Italy
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
| | - F Saillant
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - M D Salsac
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - E Sanchis
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - J Simpson
- STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom
| | - O Stezowski
- Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - Ch Theisen
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Zielińska
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
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Delafosse C, Verney D, Marević P, Gottardo A, Michelagnoli C, Lemasson A, Goasduff A, Ljungvall J, Clément E, Korichi A, De Angelis G, Andreoiu C, Babo M, Boso A, Didierjean F, Dudouet J, Franchoo S, Gadea A, Georgiev G, Ibrahim F, Jacquot B, Konstantinopoulos T, Lenzi SM, Maquart G, Matea I, Mengoni D, Napoli DR, Nikšić T, Olivier L, Pérez-Vidal RM, Portail C, Recchia F, Redon N, Siciliano M, Stefan I, Stezowski O, Vretenar D, Zielinska M, Barrientos D, Benzoni G, Birkenbach B, Boston AJ, Boston HC, Cederwall B, Charles L, Ciemala M, Collado J, Cullen DM, Désesquelles P, de France G, Domingo-Pardo C, Eberth J, González V, Harkness-Brennan LJ, Hess H, Judson DS, Jungclaus A, Korten W, Lefevre A, Legruel F, Menegazzo R, Million B, Nyberg J, Quintana B, Ralet D, Reiter P, Saillant F, Sanchis E, Theisen C, Valiente Dobon JJ. Pseudospin Symmetry and Microscopic Origin of Shape Coexistence in the ^{78}Ni Region: A Hint from Lifetime Measurements. Phys Rev Lett 2018; 121:192502. [PMID: 30468583 DOI: 10.1103/physrevlett.121.192502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 08/27/2018] [Indexed: 06/09/2023]
Abstract
Lifetime measurements of excited states of the light N=52 isotones ^{88}Kr, ^{86}Se, and ^{84}Ge have been performed, using the recoil distance Doppler shift method and VAMOS and AGATA spectrometers for particle identification and gamma spectroscopy, respectively. The reduced electric quadrupole transition probabilities B(E2;2^{+}→0^{+}) and B(E2;4^{+}→2^{+}) were obtained for the first time for the hard-to-reach ^{84}Ge. While the B(E2;2^{+}→0^{+}) values of ^{88}Kr, ^{86}Se saturate the maximum quadrupole collectivity offered by the natural valence (3s, 2d, 1g_{7/2}, 1h_{11/2}) space of an inert ^{78}Ni core, the value obtained for ^{84}Ge largely exceeds it, suggesting that shape coexistence phenomena, previously reported at N≲49, extend beyond N=50. The onset of collectivity at Z=32 is understood as due to a pseudo-SU(3) organization of the proton single-particle sequence reflecting a clear manifestation of pseudospin symmetry. It is realized that the latter provides actually reliable guidance for understanding the observed proton and neutron single particle structure in the whole medium-mass region, from Ni to Sn, pointing towards the important role of the isovector-vector ρ field in shell-structure evolution.
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Affiliation(s)
- C Delafosse
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - D Verney
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - P Marević
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - A Gottardo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - C Michelagnoli
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - A Lemasson
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - A Goasduff
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - J Ljungvall
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - E Clément
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - A Korichi
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - G De Angelis
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - C Andreoiu
- Departement of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A S16, Canada
| | - M Babo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - A Boso
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - F Didierjean
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - J Dudouet
- Université Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - S Franchoo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - A Gadea
- IFIC, CSIC-Universitat Valencia, Apartado Oficial 22085, 46071 Valencia, Spain
| | - G Georgiev
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - F Ibrahim
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - B Jacquot
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - T Konstantinopoulos
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - S M Lenzi
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - G Maquart
- Université Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - I Matea
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - D Mengoni
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - D R Napoli
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - T Nikšić
- Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia
| | - L Olivier
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - R M Pérez-Vidal
- IFIC, CSIC-Universitat Valencia, Apartado Oficial 22085, 46071 Valencia, Spain
| | - C Portail
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - F Recchia
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - N Redon
- Université Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - M Siciliano
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - I Stefan
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - O Stezowski
- Université Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622, Villeurbanne, France
| | - D Vretenar
- Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia
| | - M Zielinska
- CEA de Saclay, IRFU, F-91191 Gif-sur-Yvette, France
| | | | - G Benzoni
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - A J Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - H C Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - B Cederwall
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - L Charles
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - M Ciemala
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - J Collado
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, Valencia 46100, Spain
| | - D M Cullen
- Nuclear Physics Group, Schuster Laboratory, University of Manchester, Manchester, M13 9PL, United Kingdom
| | - P Désesquelles
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - G de France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - C Domingo-Pardo
- IFIC, CSIC-Universitat Valencia, Apartado Oficial 22085, 46071 Valencia, Spain
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - V González
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, Valencia 46100, Spain
| | - L J Harkness-Brennan
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - W Korten
- CEA de Saclay, IRFU, F-91191 Gif-sur-Yvette, France
| | - A Lefevre
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - F Legruel
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - R Menegazzo
- Departimento di Fisica e Astronomia, Università di Padova, and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - B Million
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - J Nyberg
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Universidad de Salamanca, E-37008 Salamanca, Spain
| | - D Ralet
- CSNSM, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay, France
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - F Saillant
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, Caen F-14076, France
| | - E Sanchis
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, Valencia 46100, Spain
| | - Ch Theisen
- CEA de Saclay, IRFU, F-91191 Gif-sur-Yvette, France
| | - J J Valiente Dobon
- Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
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4
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Dobbs BM, Dobbs BM, Jamieson J, Charles L, Chan K, Tian P. PEOPLE OF DEMENTIA - THE POWER OF STORY TELLING. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.3229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- B M Dobbs
- University of Alberta, Edmonton, Alberta, Canada, Edmonton, Alberta, Canada
| | - B M Dobbs
- The Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - J Jamieson
- The Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - L Charles
- The Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - K Chan
- The Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - P Tian
- The Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
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5
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Amalian JA, Al Ouahabi A, Cavallo G, König NF, Poyer S, Lutz JF, Charles L. Controlling the structure of sequence-defined poly(phosphodiester)s for optimal MS/MS reading of digital information. J Mass Spectrom 2017; 52:788-798. [PMID: 28482377 DOI: 10.1002/jms.3947] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 05/03/2017] [Accepted: 05/04/2017] [Indexed: 06/07/2023]
Abstract
Digital polymers are monodisperse chains with a controlled sequence of co-monomers, defined as letters of an alphabet, and are used to store information at the molecular level. Reading such messages is hence a sequencing task that can be efficiently achieved by tandem mass spectrometry. To improve their readability, structure of sequence-controlled synthetic polymers can be optimized, based on considerations regarding their fragmentation behavior. This strategy is described here for poly(phosphodiester)s, which were synthesized as monodisperse chains with more than 100 units but exhibited extremely complex dissociation spectra. In these polymers, two repeating units that differ by a simple H/CH3 variation were defined as the 0 and 1 bit of the ASCII code and spaced by a phosphate moiety. They were readily ionized in negative ion mode electrospray but dissociated via cleavage at all phosphate bonds upon collisional activation. Although allowing a complete sequence coverage of digital poly(phosphodiester)s, this fragmentation behavior was not efficient for macromolecules with more than 50 co-monomers, and data interpretation was very tedious. The structure of these polymers was then modified by introducing alkoxyamine linkages at appropriate location throughout the chain. A first design consisted of placing these low dissociation energy bonds between each monomeric bit: while cleavage of this sole bond greatly simplified MS/MS spectra, efficient sequencing was limited to chains with up to about 50 units. In contrast, introduction of alkoxyamine bonds between each byte (i.e. a set of eight co-monomers) was a more successful strategy. Long messages (so far, up to 8 bytes) could be read in MS3 experiments, where single-byte containing fragments released during the first activation stage were further dissociated for sequencing. The whole sequence of such byte-truncated poly(phosphodiester)s could be easily re-constructed based on a mass tagging system which permits to determine the original location of each byte in the chain. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- J-A Amalian
- Aix Marseille Univ, CNRS, UMR 7273, Institut de Chimie Radicalaire, 13397 Marseille Cedex 20, France
| | - A Al Ouahabi
- CNRS, Institut Charles Sadron UPR22, Université de Strasbourg, 23 rue du Loess, 67034, Strasbourg Cedex 2, France
| | - G Cavallo
- CNRS, Institut Charles Sadron UPR22, Université de Strasbourg, 23 rue du Loess, 67034, Strasbourg Cedex 2, France
| | - N F König
- CNRS, Institut Charles Sadron UPR22, Université de Strasbourg, 23 rue du Loess, 67034, Strasbourg Cedex 2, France
| | - S Poyer
- Aix Marseille Univ, CNRS, UMR 7273, Institut de Chimie Radicalaire, 13397 Marseille Cedex 20, France
| | - J-F Lutz
- CNRS, Institut Charles Sadron UPR22, Université de Strasbourg, 23 rue du Loess, 67034, Strasbourg Cedex 2, France
| | - L Charles
- Aix Marseille Univ, CNRS, UMR 7273, Institut de Chimie Radicalaire, 13397 Marseille Cedex 20, France
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6
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Charles L, Parmar J, Brémault-Phillips S, Dobbs B, Sacrey L, Sluggett B. DECISION-MAKING CAPACITY ASSESSMENT EDUCATION FOR PHYSICIANS: CURRENT STATE AND FUTURE DIRECTIONS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- L. Charles
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada,
| | - J. Parmar
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada,
- Network of Excellence in Seniors’ Health and Wellness, Covenant Health, Edmonton, Alberta, Canada,
| | - S. Brémault-Phillips
- Department of Occupational Therapy, University of Alberta, Edmonton, Alberta, Canada,
| | - B.M. Dobbs
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada,
| | - L. Sacrey
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - B. Sluggett
- Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada,
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7
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Charles L, Parmar J, Dobbs B, Brémault-Phillips S, Babenko O, Tian P. DECISION-MAKING CAPACITY ASSESSMENT (DMCA) TRAINING FOR PHYSICIANS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- L. Charles
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - J. Parmar
- Network of Excellence in Seniors’ Health and Wellness, Covenant Health, Edmonton, Alberta, Canada,
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - B.M. Dobbs
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - S. Brémault-Phillips
- Department of Occupational Therapy, University of Alberta, Edmonton, Alberta, Canada,
| | - O. Babenko
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - P. Tian
- Department of Family Medicine, University of Alberta, Edmonton, Alberta, Canada
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8
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Charles L, Maltby H, Abrams S, Shea J, Brand G, Nicol P. Expanding worldview: Australian nursing students' experience of cultural immersion in India. Contemp Nurse 2017; 48:67-75. [PMID: 25410197 DOI: 10.5172/conu.2014.48.1.67] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract Increasing cultural diversity and a sense of global community has necessitated the introduction of cultural competence in the education of health care providers. Some institutions have utilised cultural immersion programmes to address this need of cultural competence. Studies have not yet described what this experience is for Australian nursing students. The purpose of this study is to describe the immersion experience of a group of senior Australian nursing students who participated in a 5-week cultural immersion programme in India.
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Affiliation(s)
- Loretta Charles
- Hillside Health Care International, Punta Gorda, Belize, 2. College of Nursing and Health Sciences, University of Vermont, Burlington, VT, USA
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9
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Dudouet J, Lemasson A, Duchêne G, Rejmund M, Clément E, Michelagnoli C, Didierjean F, Korichi A, Maquart G, Stezowski O, Lizarazo C, Pérez-Vidal RM, Andreoiu C, de Angelis G, Astier A, Delafosse C, Deloncle I, Dombradi Z, de France G, Gadea A, Gottardo A, Jacquot B, Jones P, Konstantinopoulos T, Kuti I, Le Blanc F, Lenzi SM, Li G, Lozeva R, Million B, Napoli DR, Navin A, Petrache CM, Pietralla N, Ralet D, Ramdhane M, Redon N, Schmitt C, Sohler D, Verney D, Barrientos D, Birkenbach B, Burrows I, Charles L, Collado J, Cullen DM, Désesquelles P, Domingo Pardo C, González V, Harkness-Brennan L, Hess H, Judson DS, Karolak M, Korten W, Labiche M, Ljungvall J, Menegazzo R, Mengoni D, Pullia A, Recchia F, Reiter P, Salsac MD, Sanchis E, Theisen C, Valiente-Dobón JJ, Zielińska M. _{36}^{96}Kr_{60}-Low-Z Boundary of the Island of Deformation at N=60. Phys Rev Lett 2017; 118:162501. [PMID: 28474951 DOI: 10.1103/physrevlett.118.162501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Indexed: 06/07/2023]
Abstract
Prompt γ-ray spectroscopy of the neutron-rich ^{96}Kr, produced in transfer- and fusion-induced fission reactions, has been performed using the combination of the Advanced Gamma Tracking Array and the VAMOS++ spectrometer. A second excited state, assigned to J^{π}=4^{+}, is observed for the first time, and a previously reported level energy of the first 2^{+} excited state is confirmed. The measured energy ratio R_{4/2}=E(4^{+})/E(2^{+})=2.12(1) indicates that this nucleus does not show a well-developed collectivity contrary to that seen in heavier N=60 isotones. This new measurement highlights an abrupt transition of the degree of collectivity as a function of the proton number at Z=36, of similar amplitude to that observed at N=60 at higher Z values. A possible reason for this abrupt transition could be related to the insufficient proton excitations in the g_{9/2}, d_{5/2}, and s_{1/2} orbitals to generate strong quadrupole correlations or to the coexistence of competing different shapes. An unexpected continuous decrease of R_{4/2} as a function of the neutron number up to N=60 is also evidenced. This measurement establishes the Kr isotopic chain as the low-Z boundary of the island of deformation for N=60 isotones. A comparison with available theoretical predictions using different beyond mean-field approaches shows that these models fail to reproduce the abrupt transitions at N=60 and Z=36.
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Affiliation(s)
- J Dudouet
- Université, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622 Villeurbanne, France
| | - A Lemasson
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - G Duchêne
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - M Rejmund
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - E Clément
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - C Michelagnoli
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - F Didierjean
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - A Korichi
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - G Maquart
- Université, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622 Villeurbanne, France
| | - O Stezowski
- Université, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622 Villeurbanne, France
| | - C Lizarazo
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- GSI, Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - R M Pérez-Vidal
- Instituto de Física Corpuscular, CSIC-Universitat de València, E-46980 Valencia, Spain
| | - C Andreoiu
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - G de Angelis
- INFN, Laboratori Nazionali di Legnaro, Via Romea 4, I-35020 Legnaro, Italy
| | - A Astier
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - C Delafosse
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris Sud, Université Paris Saclay, 91406 Orsay Cedex, France
| | - I Deloncle
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - Z Dombradi
- Institute for Nuclear Research of the Hungarian Academy of Sciences, Pf. 51, H-4001 Debrecen, Hungary
| | - G de France
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - A Gadea
- Instituto de Física Corpuscular, CSIC-Universitat de València, E-46980 Valencia, Spain
| | - A Gottardo
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris Sud, Université Paris Saclay, 91406 Orsay Cedex, France
| | - B Jacquot
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - P Jones
- iThemba LABS, National Research Foundation, P.O. Box 722, Somerset West, 7129 South Africa
| | - T Konstantinopoulos
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - I Kuti
- Institute for Nuclear Research of the Hungarian Academy of Sciences, Pf. 51, H-4001 Debrecen, Hungary
| | - F Le Blanc
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - S M Lenzi
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
| | - G Li
- GSI, Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - R Lozeva
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - B Million
- INFN, Sezione di Milano, Milano 20133, Italy
| | - D R Napoli
- INFN, Laboratori Nazionali di Legnaro, Via Romea 4, I-35020 Legnaro, Italy
| | - A Navin
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - C M Petrache
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - N Pietralla
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Ralet
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - M Ramdhane
- LPSC, Université Grenoble-Alpes, CNRS/IN2P3, 38026 Grenoble Cedex, France
| | - N Redon
- Université, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, F-69622 Villeurbanne, France
| | - C Schmitt
- GANIL, CEA/DRF-CNRS/IN2P3, BP 55027, 14076 Caen cedex 5, France
| | - D Sohler
- Institute for Nuclear Research of the Hungarian Academy of Sciences, Pf. 51, H-4001 Debrecen, Hungary
| | - D Verney
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris Sud, Université Paris Saclay, 91406 Orsay Cedex, France
| | | | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - I Burrows
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - L Charles
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - J Collado
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - D M Cullen
- Nuclear Physics Group, Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom
| | - P Désesquelles
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - C Domingo Pardo
- Instituto de Física Corpuscular, CSIC-Universitat de València, E-46980 Valencia, Spain
| | - V González
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - L Harkness-Brennan
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - M Karolak
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - W Korten
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - M Labiche
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - J Ljungvall
- CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - R Menegazzo
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - D Mengoni
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
| | - A Pullia
- INFN, Sezione di Milano, Milano 20133, Italy
- Dipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
| | - F Recchia
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35131 Padova, Italy
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - M D Salsac
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - E Sanchis
- Departamento de Ingeniería Electrónica, Universitat de Valencia, 46100 Burjassot, Valencia, Spain
| | - Ch Theisen
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - J J Valiente-Dobón
- INFN, Laboratori Nazionali di Legnaro, Via Romea 4, I-35020 Legnaro, Italy
| | - M Zielińska
- IRFU, CEA/DRF, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
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Podolyák Z, Shand CM, Lalović N, Gerl J, Rudolph D, Alexander T, Boutachkov P, Cortés ML, Górska M, Kojouharov I, Kurz N, Louchart C, Merchán E, Michelagnoli C, Pérez-Vidal RM, Pietri S, Ralet D, Reese M, Schaffner H, Stahl C, Weick H, Ameil F, de Angelis G, Arici T, Carroll R, Dombrádi Z, Gadea A, Golubev P, Lettmann M, Lizarazo C, Mahboub D, Pai H, Patel Z, Pietralla N, Regan PH, Sarmiento LG, Wieland O, Wilson E, Birkenbach B, Bruyneel B, Burrows I, Charles L, Clément E, Crespi FCL, Cullen DM, Désesquelles P, Eberth J, González V, Habermann T, Harkness-Brennan L, Hess H, Judson DS, Jungclaus A, Korten W, Labiche M, Maj A, Mengoni D, Napoli DR, Pullia A, Quintana B, Rainovski G, Reiter P, Salsac MD, Sanchis E, Valiente Dóbon JJ. Role of the Δ Resonance in the Population of a Four-Nucleon State in the ^{56}Fe→^{54}Fe Reaction at Relativistic Energies. Phys Rev Lett 2016; 117:222302. [PMID: 27925748 DOI: 10.1103/physrevlett.117.222302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Indexed: 06/06/2023]
Abstract
The ^{54}Fe nucleus was populated from a ^{56}Fe beam impinging on a Be target with an energy of E/A=500 MeV. The internal decay via γ-ray emission of the 10^{+} metastable state was observed. As the structure of this isomeric state has to involve at least four unpaired nucleons, it cannot be populated in a simple two-neutron removal reaction from the ^{56}Fe ground state. The isomeric state was produced in the low-momentum (-energy) tail of the parallel momentum (energy) distribution of ^{54}Fe, suggesting that it was populated via the decay of the Δ^{0} resonance into a proton. This process allows the population of four-nucleon states, such as the observed isomer. Therefore, it is concluded that the observation of this 10^{+} metastable state in ^{54}Fe is a consequence of the quark structure of the nucleons.
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Affiliation(s)
- Zs Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - C M Shand
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - N Lalović
- Department of Physics, Lund University, S-22100 Lund, Sweden
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - J Gerl
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - D Rudolph
- Department of Physics, Lund University, S-22100 Lund, Sweden
| | - T Alexander
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - P Boutachkov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - M L Cortés
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - M Górska
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - I Kojouharov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - N Kurz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - C Louchart
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - E Merchán
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - C Michelagnoli
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen Cedex 05, France
| | - R M Pérez-Vidal
- Instituto de Fisica Corpuscular, Universitat de Valencia, E-46980 Valencia, Spain
| | - S Pietri
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - D Ralet
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - M Reese
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - H Schaffner
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - Ch Stahl
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - H Weick
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - F Ameil
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - G de Angelis
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - T Arici
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany
| | - R Carroll
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Zs Dombrádi
- Institute for Nuclear Research, Hungarian Academy of Sciences, P.O. Box 51, Debrecen H-4001, Hungary
| | - A Gadea
- Instituto de Fisica Corpuscular, Universitat de Valencia, E-46980 Valencia, Spain
| | - P Golubev
- Department of Physics, Lund University, S-22100 Lund, Sweden
| | - M Lettmann
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - C Lizarazo
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - D Mahboub
- Physics Department, University of Hail, PO Box 2440 Hail, Saudi Arabia
| | - H Pai
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - Z Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - N Pietralla
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - P H Regan
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - L G Sarmiento
- Department of Physics, Lund University, S-22100 Lund, Sweden
| | - O Wieland
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - E Wilson
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - B Bruyneel
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - I Burrows
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - L Charles
- Institut Pluridisciplinaire Hubert Curien, CNRS-IN2P3, Université de Strasbourg, F-67037 Strasbourg, France
| | - E Clément
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen Cedex 05, France
| | - F C L Crespi
- INFN, Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - D M Cullen
- School of Physics and Astronomy, Schuster Laboratory, University of Manchester, Manchester M13 9PL, United Kingdom
| | - P Désesquelles
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse-CSNSM, CNRS/IN2P3 and University Paris-Sud, F-91405 Orsay Campus, France
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - V González
- Department of Electronic Engineering, University of Valencia, E-46100 Burjassot (Valencia), Spain
| | - T Habermann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany
| | - L Harkness-Brennan
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - W Korten
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Labiche
- STFC Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - A Maj
- Institute of Nuclear Physics Polish Academy of Sciences, PL-31-342 Krakow, Poland
| | - D Mengoni
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - D R Napoli
- INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
| | - A Pullia
- INFN, Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Universidad de Salamanca, E-37008 Salamanca, Spain
| | - G Rainovski
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - M D Salsac
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - E Sanchis
- Department of Electronic Engineering, University of Valencia, E-46100 Burjassot (Valencia), Spain
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Hadyńska-Klȩk K, Napiorkowski PJ, Zielińska M, Srebrny J, Maj A, Azaiez F, Valiente Dobón JJ, Kicińska-Habior M, Nowacki F, Naïdja H, Bounthong B, Rodríguez TR, de Angelis G, Abraham T, Anil Kumar G, Bazzacco D, Bellato M, Bortolato D, Bednarczyk P, Benzoni G, Berti L, Birkenbach B, Bruyneel B, Brambilla S, Camera F, Chavas J, Cederwall B, Charles L, Ciemała M, Cocconi P, Coleman-Smith P, Colombo A, Corsi A, Crespi FCL, Cullen DM, Czermak A, Désesquelles P, Doherty DT, Dulny B, Eberth J, Farnea E, Fornal B, Franchoo S, Gadea A, Giaz A, Gottardo A, Grave X, Grȩbosz J, Görgen A, Gulmini M, Habermann T, Hess H, Isocrate R, Iwanicki J, Jaworski G, Judson DS, Jungclaus A, Karkour N, Kmiecik M, Karpiński D, Kisieliński M, Kondratyev N, Korichi A, Komorowska M, Kowalczyk M, Korten W, Krzysiek M, Lehaut G, Leoni S, Ljungvall J, Lopez-Martens A, Lunardi S, Maron G, Mazurek K, Menegazzo R, Mengoni D, Merchán E, Mȩczyński W, Michelagnoli C, Mierzejewski J, Million B, Myalski S, Napoli DR, Nicolini R, Niikura M, Obertelli A, Özmen SF, Palacz M, Próchniak L, Pullia A, Quintana B, Rampazzo G, Recchia F, Redon N, Reiter P, Rosso D, Rusek K, Sahin E, Salsac MD, Söderström PA, Stefan I, Stézowski O, Styczeń J, Theisen C, Toniolo N, Ur CA, Vandone V, Wadsworth R, Wasilewska B, Wiens A, Wood JL, Wrzosek-Lipska K, Ziȩbliński M. Superdeformed and Triaxial States in ^{42}Ca. Phys Rev Lett 2016; 117:062501. [PMID: 27541463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Indexed: 06/06/2023]
Abstract
Shape parameters of a weakly deformed ground-state band and highly deformed slightly triaxial sideband in ^{42}Ca were determined from E2 matrix elements measured in the first low-energy Coulomb excitation experiment performed with AGATA. The picture of two coexisting structures is well reproduced by new state-of-the-art large-scale shell model and beyond-mean-field calculations. Experimental evidence for superdeformation of the band built on 0_{2}^{+} has been obtained and the role of triaxiality in the A∼40 mass region is discussed. Furthermore, the potential of Coulomb excitation as a tool to study superdeformation has been demonstrated for the first time.
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Affiliation(s)
- K Hadyńska-Klȩk
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
- Faculty of Physics, University of Warsaw, PL 00-681 Warsaw, Poland
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - P J Napiorkowski
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - M Zielińska
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - J Srebrny
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - A Maj
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - F Azaiez
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - J J Valiente Dobón
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | | | - F Nowacki
- Université de Strasbourg, IPHC/CNRS, UMR7178, 23 rue du Loess, F-67037 Strasbourg, France
| | - H Naïdja
- Université de Strasbourg, IPHC/CNRS, UMR7178, 23 rue du Loess, F-67037 Strasbourg, France
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- LPMS, Université Constantine 1, Route Ain-El bey, 25000 Constantine, Algeria
| | - B Bounthong
- Université de Strasbourg, IPHC/CNRS, UMR7178, 23 rue du Loess, F-67037 Strasbourg, France
| | - T R Rodríguez
- Universidad Autónoma de Madrid, Departamento de Física Teórica, E-28049 Cantoblanco, Madrid, Spain
| | - G de Angelis
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - T Abraham
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - G Anil Kumar
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - D Bazzacco
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - M Bellato
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - D Bortolato
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - P Bednarczyk
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - G Benzoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - L Berti
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - B Bruyneel
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - S Brambilla
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - F Camera
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - J Chavas
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - B Cederwall
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - L Charles
- Université de Strasbourg, IPHC/CNRS, UMR7178, 23 rue du Loess, F-67037 Strasbourg, France
| | - M Ciemała
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - P Cocconi
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - P Coleman-Smith
- Daresbury Laboratory, Daresbury, Warrington WA4 4AD, United Kingdom
| | - A Colombo
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - A Corsi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - F C L Crespi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - D M Cullen
- Schuster Laboratory, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - A Czermak
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - P Désesquelles
- Université Paris-Sud, F-91400 Orsay, France
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - D T Doherty
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
- Department of Physics University of York, Heslington, York YO10 5DD, United Kingdom
| | - B Dulny
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - E Farnea
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - B Fornal
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - S Franchoo
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - A Gadea
- Instituto de Física Corpuscular IFIC, CSIC-University of Valencia, S-46980 Paterna, Valencia, Spain
| | - A Giaz
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - A Gottardo
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - X Grave
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - J Grȩbosz
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - A Görgen
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - M Gulmini
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - T Habermann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - R Isocrate
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - J Iwanicki
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - G Jaworski
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - N Karkour
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - M Kmiecik
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - D Karpiński
- Faculty of Physics, University of Warsaw, PL 00-681 Warsaw, Poland
| | - M Kisieliński
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - N Kondratyev
- Flerov Laboratory of Nuclear Reactions JINR, RU-141980 Dubna, Russia
| | - A Korichi
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - M Komorowska
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
- Faculty of Physics, University of Warsaw, PL 00-681 Warsaw, Poland
| | - M Kowalczyk
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - W Korten
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - M Krzysiek
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - G Lehaut
- Universite Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France
| | - S Leoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - J Ljungvall
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - A Lopez-Martens
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM/IN2P3/CNRS), F-91405 Orsay, France
| | - S Lunardi
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - G Maron
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - K Mazurek
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - R Menegazzo
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - D Mengoni
- INFN Sezione di Padova, I-35131 Padova, Italy
| | - E Merchán
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - W Mȩczyński
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - C Michelagnoli
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - J Mierzejewski
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - B Million
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - S Myalski
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - D R Napoli
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - R Nicolini
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - M Niikura
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - A Obertelli
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - S F Özmen
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - M Palacz
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - L Próchniak
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - A Pullia
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Departamento de Física Fundamental, Universidad de Salamanca, E-37008 Salamanca,Spain
| | - G Rampazzo
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - F Recchia
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - N Redon
- Universite Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - D Rosso
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - K Rusek
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - E Sahin
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - M-D Salsac
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - P-A Söderström
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - I Stefan
- Institut de Physique Nucléaire d'Orsay, F-91400 Orsay, France
| | - O Stézowski
- Universite Lyon 1, CNRS, IN2P3, IPN Lyon, F-69622 Villeurbanne, France
| | - J Styczeń
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - Ch Theisen
- CEA Saclay, IRFU/SPhN, F-91191 Gif-sur-Yvette, France
| | - N Toniolo
- INFN Laboratori Nazionali di Legnaro, Viale dell'Università, 2, I-35020 Legnaro, Italy
| | - C A Ur
- INFN Sezione di Padova, I-35131 Padova, Italy
- Dipartimento di Fisica e Astronomia dell'Università degli Studi di Padova, I-35131 Padova, Italy
| | - V Vandone
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - R Wadsworth
- Department of Physics University of York, Heslington, York YO10 5DD, United Kingdom
| | - B Wasilewska
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
| | - A Wiens
- Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
| | - J L Wood
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA
| | - K Wrzosek-Lipska
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, PL 02-093 Warsaw, Poland
| | - M Ziȩbliński
- Institute of Nuclear Physics, Polish Academy of Sciences, PL 31-342 Kraków, Poland
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Bochaton C, Boistel R, Charles L. X-ray microtomography provides first data about the feeding behaviour of an endangered lizard, the Montserrat galliwasp (Diploglossus montisserrati). R Soc Open Sci 2015; 2:150461. [PMID: 27019732 PMCID: PMC4807453 DOI: 10.1098/rsos.150461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 11/20/2015] [Indexed: 06/05/2023]
Abstract
Reporting the diet of recently extinct or very rare taxa, only known by a few museum specimens, is challenging. This study uses X-ray microtomography, a non-destructive investigation method, to obtain the first data about feeding behaviours in the Montserrat galliwasp (Diploglossus montisserrati) by scanning one of the two specimens known to date. The scans revealed the occurrence of shell fragments of a freshwater snail (Omalonyx matheroni) in the digestive tract of the specimen. This data combined with morphological evidence shows the occurrence of a durophagous feeding habit and a possible tendency of association with freshwater environments. This information could be crucial to save this critically endangered lizard endemic on Montserrat island.
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Affiliation(s)
- C. Bochaton
- Laboratoire Archéozoologie et Archéobotanique: Sociétés, Pratiques et Environnements, UMR 7209 – CNRS, MNHN, Muséum national d'Histoire naturelle, Sorbonne Universités, 55 rue Buffon, CP 56, Paris 75005, France
- Institut de Systématique, Évolution, Biodiversité, ISYEB – UMR 7205 – CNRS, MNHN, UPMC, EPHE, Muséum national d'Histoire naturelle, Sorbonne Universités, 57 rue Cuvier, CP 30, Paris 75005, France
| | - R. Boistel
- Institut de Paléoprimatologie, Paléontologie Humaine: Evolution et Paléoenvironnements, UMR 7262–CNRS, Université de Poitiers, UFR SFA, Bât. B35, 6 rue Michel Brunet, TSA 51106, Poitiers 86073, France
| | - L. Charles
- Muséum d'Histoire naturelle de Bordeaux, 5 Place Bardineau, Bordeaux 33000, France
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Charles L, Maltby H, Abrams S, Shea J, Brand G, Nicol P. Expanding worldview: Australian nursing students’ experience of cultural immersion in India. Contemp Nurse 2015. [DOI: 10.1080/10376178.2014.11081928] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Crespi FCL, Bracco A, Nicolini R, Mengoni D, Pellegri L, Lanza EG, Leoni S, Maj A, Kmiecik M, Avigo R, Benzoni G, Blasi N, Boiano C, Bottoni S, Brambilla S, Camera F, Ceruti S, Giaz A, Million B, Morales AI, Vandone V, Wieland O, Bednarczyk P, Ciemała M, Grebosz J, Krzysiek M, Mazurek K, Zieblinski M, Bazzacco D, Bellato M, Birkenbach B, Bortolato D, Calore E, Cederwall B, Charles L, de Angelis G, Désesquelles P, Eberth J, Farnea E, Gadea A, Görgen A, Gottardo A, Isocrate R, Jolie J, Jungclaus A, Karkour N, Korten W, Menegazzo R, Michelagnoli C, Molini P, Napoli DR, Pullia A, Recchia F, Reiter P, Rosso D, Sahin E, Salsac MD, Siebeck B, Siem S, Simpson J, Söderström PA, Stezowski O, Theisen C, Ur C, Valiente-Dobón JJ. Isospin character of low-lying pygmy dipole states in 208Pb via inelastic scattering of 17O ions. Phys Rev Lett 2014; 113:012501. [PMID: 25032921 DOI: 10.1103/physrevlett.113.012501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Indexed: 06/03/2023]
Abstract
The properties of pygmy dipole states in 208Pb were investigated using the 208Pb(17O, 17O'γ) reaction at 340 MeV and measuring the γ decay with high resolution with the AGATA demonstrator array. Cross sections and angular distributions of the emitted γ rays and of the scattered particles were measured. The results are compared with (γ, γ') and (p, p') data. The data analysis with the distorted wave Born approximation approach gives a good description of the elastic scattering and of the inelastic excitation of the 2+ and 3- states. For the dipole transitions a form factor obtained by folding a microscopically calculated transition density was used for the first time. This has allowed us to extract the isoscalar component of the 1- excited states from 4 to 8 MeV.
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Affiliation(s)
- F C L Crespi
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Bracco
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - R Nicolini
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - D Mengoni
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - L Pellegri
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - E G Lanza
- INFN, Sezione di Catania, I-95123 Catania, Italy
| | - S Leoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Maj
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - M Kmiecik
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - R Avigo
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - G Benzoni
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - N Blasi
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - C Boiano
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Bottoni
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Brambilla
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - F Camera
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Ceruti
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A Giaz
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - B Million
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - A I Morales
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - V Vandone
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - O Wieland
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - P Bednarczyk
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - M Ciemała
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - J Grebosz
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - M Krzysiek
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - K Mazurek
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - M Zieblinski
- The Niewodniczanski Institute of Nuclear Physics, PAN, 31-342 Krakow, Poland
| | - D Bazzacco
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - M Bellato
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - B Birkenbach
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D Bortolato
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - E Calore
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - B Cederwall
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - L Charles
- Institut Pluridisciplinaire Hubert Curien IPHC, CNRS/IN2P3 and Université de Strasbourg BP 28, F-67037 Strasbourg Cedex 2, France
| | - G de Angelis
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - P Désesquelles
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse CSNSM, CNRS/IN2P3 and Université Paris-Sud, F-91405 Orsay Campus, France
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - E Farnea
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - A Gadea
- IFIC, CSIC-Universitat de València, E-46980 Valéncia, Spain
| | - A Görgen
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - A Gottardo
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - R Isocrate
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - J Jolie
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - N Karkour
- Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse CSNSM, CNRS/IN2P3 and Université Paris-Sud, F-91405 Orsay Campus, France
| | - W Korten
- Institut de Recherche sur les lois Fondamentales de l'Univers IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - R Menegazzo
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - C Michelagnoli
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - P Molini
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - D R Napoli
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - A Pullia
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy and INFN, Sezione di Milano, I-20133 Milano, Italy
| | - F Recchia
- Dipartimento di Fisica dell'Università degli Studi di Padova, I-35131 Padova, Italy and INFN, Sezione di Padova, I-35131 Padova, Italy
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - D Rosso
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - E Sahin
- INFN, Laboratori Nazionali di Legnaro, Legnaro I-35020, Italy
| | - M D Salsac
- Institut de Recherche sur les lois Fondamentales de l'Univers IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - B Siebeck
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - S Siem
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - J Simpson
- STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom
| | - P-A Söderström
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - O Stezowski
- Université de Lyon, F-69622, Lyon, France and Université Lyon 1, Villeurbanne; CNRS/IN2P3, UMR5822, IPNL, France
| | - Ch Theisen
- Institut de Recherche sur les lois Fondamentales de l'Univers IRFU, CEA/DSM, Centre CEA de Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - C Ur
- INFN, Sezione di Padova, I-35131 Padova, Italy
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Charles L, Maltby H, Abrams S, Shea J, Brand G, Nicol P. Expanding Worldview: Australian Nursing Students' Experience of Cultural Immersion in India. Contemp Nurse 2014:4288-4308. [PMID: 24972634 DOI: 10.5172/conu.2014.4288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract Increasing cultural diversity and a sense of global community has necessitated the introduction of cultural competence in the education of health care providers. Some institutions have utilized cultural immersion programs to address this need of cultural competence. Studies have not yet described what this experience is for Australian nursing students. The purpose of this study is to describe the immersion experience of a group of senior Australian nursing students who participated in a five week cultural immersion program in India.
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Charles L. Is There an Indication for Laparoscopic Trans Abdominal Cerclage? J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Violanti J, Fekedulegn D, Andrew M, Charles L, Hartley T, Burchfiel C. Adiposity and Depressive Symptoms in Police Officers. Ann Epidemiol 2007. [DOI: 10.1016/j.annepidem.2007.07.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Komaki R, Allen P, Glisson B, Milas L, Charles L, Kaplan B, Fossella F, Liao Z, Jeter M, Stevens C, Chang J, Guerrero T. Hyperfractionated and accelerated thoracic radiation therapy (HFXATRT) increased survival compared to daily TRT (QDTRT) for limited small cell lung cancer (LSCLC) patients treated with concurrent chemotherapy. Int J Radiat Oncol Biol Phys 2004. [DOI: 10.1016/j.ijrobp.2004.06.149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Metabolism of dehydroepiandrosterone (DHEA), its sulfate (DHEAS), and androstene-3,17-dione (delta(4)) was performed at their physiological plasma concentrations in MCF-7 cell cultures (1 microM, 10 and 2 nM, respectively). Final metabolic products of these steroids were separated by HPLC-radioactive flow detection and identified by LC/MS or MS/MS. Typical and specific mass fragmentation spectra identified the presence of estrone (E(1)), 17beta-estradiol (E(2)), delta(4), DHEA, 5-androstene-3beta,17beta-diol (delta(5)), and testosterone as principal DHEAS metabolites. Other steroids, such as androstenedione, androsterone, and DHEA fatty acid esters at very low concentrations (from pM to nM), were also obtained after steroid incubation. This highly specific method allowed us to conclude whether a metabolite and enzymatic activity of interest were present in MCF-7 cells or not. We also showed that DHEAS at its physiological plasma concentration may be converted into estrogens and estrogen-like compounds in breast cancer cells. The estrogenic action of DHEAS on breast cancer cells was also measured by bioluminescence in a stably transfected human breast cancer MCF-7 cell line with a reporter gene that allowed expression of the firefly luciferase enzyme under the control of an estrogen regulatory element.
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Affiliation(s)
- J C Le Bail
- Laboratoire de Biochimie, University of Pharmacy of Limoges, UPRES EA 1085, 2 rue du Docteur Marcland, Limoges 87025 Cedex, France
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20
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Charles L, Riter LS, Cooks RG. Direct analysis of semivolatile organic compounds in air by atmospheric pressure chemical ionization mass spectrometry. Anal Chem 2001; 73:5061-5. [PMID: 11721900 DOI: 10.1021/ac010606l] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Atmospheric pressure chemical ionization is employed for direct air analysis, without ion source modification, by using the sheath gas as the sample transport agent. A simple modification of the sheath gas inlet line allows introduction of gaseous samples into a commercial atmospheric pressure chemical ionization source. Optimization and testing of this novel air sampling method are described and detection of semivolatile compounds is shown. The analytical performance of the technique is established with methyl salicylate, including a limit of quantification of 100 pptr, a limit of detection of 50 pptr, a linear response from 100 pptr to 20 ppb, and rise and fall times of 12 and 20 s, respectively. Using reagent ion monitoring, it is shown that the protonated methanol dimer is the principal CI reagent ion leading to protonated dimethyl methylphosphonate, while the monomer is mainly responsible for protonating methyl salicylate. Since the formation of the CI reagent (methanol clusters) can be controlled by simple variation of experimental parameters, the selectivity of the method can be easily adjusted to suit the targeted analyte. Performance is found to be independent of the choice of air or nitrogen as the sheath gas (and thus as the sample matrix) and this, together with the sensitivity and speed of the technique, make it promising for field studies.
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Affiliation(s)
- L Charles
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
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Charles L, Pépin D, Gonnet F, Tabet JC. Effects of liquid phase composition on salt cluster formation in positive ion mode electrospray mass spectrometry: implications for clustering mechanism in electrospray. J Am Soc Mass Spectrom 2001; 12:1077-1084. [PMID: 11605968 DOI: 10.1016/s1044-0305(01)00290-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Potassium bromate salt clusters, [KBrO3]nKx(x+), formed by electrospray ionization were studied as a function of solution properties. Clusters with up to 4 positive charges were observed. Their abundance, charge state and distribution were shown to vary with the organic solvent in solution. The effects of 7 solvents, including methanol, ethanol, isopropanol, acetonitrile, acetone, pyridine, and 1,4-dioxane, were thoroughly investigated. Solvents with a low dielectric constant and a high viscosity seem to favor clustering in solution but do not systematically allow high charge state ion formation. On the other hand, cluster charge reduction during desolvation was not correlated with solvent cation affinity over the range of solvents examined. However, ion distribution in mass spectra could be rationalized as a combination of these two competing phenomena. Charge state increases with the cluster size but may be reduced during ion desolvation when high cation affinity solvent molecules are actually involved in the ion solvation shell. This assumption could be envisaged in either Iribarne or Dole mechanisms of ion release in the gas phase. However, intensity profiles of multiply charged clusters could only be understood in terms of the ion evaporation mechanism.
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Affiliation(s)
- L Charles
- Laboratorie de Contrĵle des Faux, Facultés de Médecine et Pharmacie, Clermont-Ferrand, France
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Cortés Algara A, Charles L, González Ramírez P, Río de la Loza F, Aranda Flores CE. [Laparoscopic management of ovarian borderline tumors]. Ginecol Obstet Mex 2001; 69:355-8. [PMID: 11816533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The objective of this communication is to present a patient case with ovarian borderline tumor. The conservative management for laparoscopy, and we performed an analysis of the mundial literature in which respect to the conservative and laparoscopy management, in spite of the laparoscopy management are of controversy.
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Affiliation(s)
- A Cortés Algara
- Director de Endoscopia Ginecológica, Baystate Medical Center, Springfield, MA, USA
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Riter LS, Charles L, Turowski M, Cooks RG. External interface for trap-and-release membrane introduction mass spectrometry applied to the detection of inorganic chloramines and chlorobenzenes in water. Rapid Commun Mass Spectrom 2001; 15:2290-2295. [PMID: 11746895 DOI: 10.1002/rcm.489] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Construction and evaluation of an external configuration trap-and-release membrane introduction system for mass spectrometry is described. This novel interface allows independent control of the temperature of the membrane and eliminates the dependence of membrane heating efficiency on its position in the ion source. The external trap-and-release MIMS configuration is successfully applied to detection of inorganic chloramines and chlorobenzenes. The method is shown to give temporal resolution of volatile vs. semi-volatile compounds, which increases its sensitivity for semi-volatiles in the presence of volatiles and provides an additional selectivity parameter. Further selectivity is provided by tandem mass spectrometry.
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Affiliation(s)
- L S Riter
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
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Charles L. Integration of complementary disciplines into the oncology clinic. Part VII. Integrating psychological services with medical treatment for patients with breast cancer. Curr Probl Cancer 2000; 24:280-90. [PMID: 11055280 DOI: 10.1016/s0147-0272(00)90004-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- L Charles
- Breast Health Center, Naval Medical Center, San Diego, California, USA
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Huff SM, Rocha RA, McDonald CJ, De Moor GJ, Fiers T, Bidgood WD, Forrey AW, Francis WG, Tracy WR, Leavelle D, Stalling F, Griffin B, Maloney P, Leland D, Charles L, Hutchins K, Baenziger J. Development of the Logical Observation Identifier Names and Codes (LOINC) vocabulary. J Am Med Inform Assoc 1998; 5:276-92. [PMID: 9609498 PMCID: PMC61302 DOI: 10.1136/jamia.1998.0050276] [Citation(s) in RCA: 138] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/1997] [Accepted: 01/07/1998] [Indexed: 11/04/2022] Open
Abstract
The LOINC (Logical Observation Identifier Names and Codes) vocabulary is a set of more than 10,000 names and codes developed for use as observation identifiers in standardized messages exchanged between clinical computer systems. The goal of the study was to create universal names and codes for clinical observations that could be used by all clinical information systems. The LOINC names are structured to facilitate rapid matching, either automated or manual, between local vocabularies and the universal LOINC codes. If LOINC codes are used in clinical messages, each system participating in data exchange needs to match its local vocabulary to the standard vocabulary only once. This will reduce both the time and cost of implementing standardized interfaces. The history of the development of the LOINC vocabulary and the methodology used in its creation are described.
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Affiliation(s)
- S M Huff
- Intermountain Health Care, Salt Lake City, Utah 84111, USA.
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Abstract
A sensitive method for analyzing chlorite, chlorate, bromate and iodate in water by ion chromatography (IC) coupled with ionspray tandem mass spectrometry (IS-MS-MS) has been developed. Prior to analysis, samples were subjected to off-line sample clean-up with Ba, Ag and H-form resins to remove sulfate, chloride and hydrogencarbonate, respectively. Oxyhalides in the purified samples were concentrated and separated on a short, high-performance anion-exchange column. An eluent consisting of ammonium nitrate in methanol-water (9:1, v/v) was found to be suitable for separating the analytes, while providing enhanced detector sensitivity. The coupling of IC with IS-MS-MS allows for the identification of the four oxyhalides mentioned above in a single run with very high specificity and sensitivity.
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Affiliation(s)
- L Charles
- Institut Louise Blanquet, Facultés de Médecine et de Pharmacie, Clermont-Ferrand, France
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Affiliation(s)
- L. Charles
- Facultés de Médecine et de Pharmacie, Institut Louise Blanquet, 63000 Clermont-Ferrand, France
| | - D. Pépin
- Facultés de Médecine et de Pharmacie, Institut Louise Blanquet, 63000 Clermont-Ferrand, France
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Abstract
Macrolide antibiotics have proven to be valuable alternatives to penicillins and cephalosporins for the treatment of a number of infections. Currently, a number of macrolides are available. When choosing a particular macrolide, the types of organisms causing the infection, the tolerability of the drug, convenience of dosing and possible drug interactions all must be taken into account. Erythromycin, azithromycin and clarithromycin are equally effective against most gram-positive organisms. However, clarithromycin and azithromycin have much better activity against Haemophilus influenza and Moraxella catarrhalis. Thus, these 2 drugs are better choices for the treatment of community-acquired pneumonia. However, the low serum concentrations of azithromycin may be a problem in patients with bacteraemia associated with with community-acquired pneumonia. Clarithromycin appears to be effective for the treatment and prophylaxis of Mycobacterium avium complex (MAC) in patients with AIDS, while azithromycin appears to be effective for prophylaxis. Treatment of MAC with azithromycin is currently undergoing study. Although clarithromycin is the macrolide of choice for the treatment of Helicobacter pylori, azithromycin is the preferred macrolide for the treatment of Chlamydia trachomatis infections. The major factor limiting the use of azithromycin and clarithromycin has been their cost. However, these drugs may be cost effective if compliance is improved due to better tolerability and more convenient dosing regimens.
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Affiliation(s)
- L Charles
- Rush Medical College, Chicago, Illinois, USA
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Affiliation(s)
- L. Charles
- Institut Louise Blanquet and Chaire d'Hydrologie et Hygiène, Facultés de Médecine et de Pharmacie, 63000 Clermont-Ferrand, France, and Perkin Elmer Sciex, via Tiepolo 24, I-20052 Monza (MI), Italy
| | - D. Pépin
- Institut Louise Blanquet and Chaire d'Hydrologie et Hygiène, Facultés de Médecine et de Pharmacie, 63000 Clermont-Ferrand, France, and Perkin Elmer Sciex, via Tiepolo 24, I-20052 Monza (MI), Italy
| | - B. Casetta
- Institut Louise Blanquet and Chaire d'Hydrologie et Hygiène, Facultés de Médecine et de Pharmacie, 63000 Clermont-Ferrand, France, and Perkin Elmer Sciex, via Tiepolo 24, I-20052 Monza (MI), Italy
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Forrey AW, McDonald CJ, DeMoor G, Huff SM, Leavelle D, Leland D, Fiers T, Charles L, Griffin B, Stalling F, Tullis A, Hutchins K, Baenziger J. Logical observation identifier names and codes (LOINC) database: a public use set of codes and names for electronic reporting of clinical laboratory test results. Clin Chem 1996; 42:81-90. [PMID: 8565239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Many laboratories use electronic message standards to transmit results to their clients. If all laboratories used the same "universal" set of test identifiers, electronic transmission of results would be greatly simplified. The Logical Observation Identifier Names and Codes (LOINC) database aims to be such a code system, covering at least 98% of the average laboratory's tests. The LOINC database should be of interest to hospitals, clinical laboratories, doctors' offices, state health departments, governmental healthcare providers, third-party payors, organizations involved in clinical trials, and quality assurance and utilization reviewers. The fifth release of the LOINC database, containing codes, names, and synonyms for approximately 6300 test observations, is now available on the Internet for public use. Here we describe the LOINC database, the methods used to produce it, and how it may be obtained.
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Forrey AW, McDonald CJ, DeMoor G, Huff SM, Leavelle D, Leland D, Fiers T, Charles L, Griffin B, Stalling F, Tullis A, Hutchins K, Baenziger J. Logical observation identifier names and codes (LOINC) database: a public use set of codes and names for electronic reporting of clinical laboratory test results. Clin Chem 1996. [DOI: 10.1093/clinchem/42.1.81] [Citation(s) in RCA: 135] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Many laboratories use electronic message standards to transmit results to their clients. If all laboratories used the same "universal" set of test identifiers, electronic transmission of results would be greatly simplified. The Logical Observation Identifier Names and Codes (LOINC) database aims to be such a code system, covering at least 98% of the average laboratory's tests. The LOINC database should be of interest to hospitals, clinical laboratories, doctors' offices, state health departments, governmental healthcare providers, third-party payors, organizations involved in clinical trials, and quality assurance and utilization reviewers. The fifth release of the LOINC database, containing codes, names, and synonyms for approximately 6300 test observations, is now available on the Internet for public use. Here we describe the LOINC database, the methods used to produce it, and how it may be obtained.
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Affiliation(s)
| | | | - G DeMoor
- University of Washington, Seattle, USA
| | - S M Huff
- University of Washington, Seattle, USA
| | | | - D Leland
- University of Washington, Seattle, USA
| | - T Fiers
- University of Washington, Seattle, USA
| | - L Charles
- University of Washington, Seattle, USA
| | - B Griffin
- University of Washington, Seattle, USA
| | | | - A Tullis
- University of Washington, Seattle, USA
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Weinhold PA, Charles L, Feldman DA. Regulation of CTP: phosphocholine cytidylyltransferase in HepG2 cells: effect of choline depletion on phosphorylation, translocation and phosphatidylcholine levels. Biochim Biophys Acta 1994; 1210:335-47. [PMID: 8305489 DOI: 10.1016/0005-2760(94)90238-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We studied the effect of choline depletion on the biosynthesis of phosphatidylcholine (PC) and the distribution and phosphorylation of cytidylyltransferase (CT) in HepG2 cells. Phosphocholine concentrations decreased within 24 h of choline depletion to values less than 2% of controls. The incorporation of [3H]glycerol into PC was reduced in choline-depleted (CD) cells. The apparent turnover of PC was similar in CD and choline-supplemented (CS) cells (T1/2 = 20 h). The methylation pathway for PC synthesis increased nearly 10-fold in CD cells. Cell growth was similar in CD and CS cells. Over 95% of CT activity in CS cells was in the soluble pool. Choline depletion resulted in a progressive decrease in CT activity and immunodetected enzyme in the soluble pool and a corresponding increase in membrane CT over a 48-h period. Choline supplementation of CD cells caused a rapid release of membrane CT (complete release by 3 h). Two phosphorylated forms of CT were identified. One form contained a higher level of phosphorylation (HPCT) than the other form (LPCT). HPCT migrated slightly slower than LPCT on SDS gels. CD cells contained only LPCT in both soluble and membrane pools. CS cells contained only HPCT. During choline depletion PC content decreased nearly 20% but CT binding did not occur until LPCT was generated in cytosol. Conversely, choline supplementation released LPCT into cytosol and HPCT was formed only after the release. We conclude that both the induction of binding sites, perhaps by depletion of PC and dephosphorylation of HPCT to LPCT, are required for CT translocation to membranes. The release of CT from membranes is initiated by changes in membrane binding sites followed by trapping of the CT in the soluble pool by phosphorylation of LPCT to HPCT.
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Abstract
We examined the genomic occurrence of the transposable element pogo in over 120 strains of Drosophila melanogaster, from around the world and from different eras. All had multiple copies of a 2.1 kilobase (kb) pogo element, and multiple copies of several size classes between 1.0 and 1.8 kb. There were differences between strains in intensities or presences of deletion-derivative size classes, suggesting current or recent mobility in the species. We were unable to find any pogo-hybridization in eight other species in the genus, in three subgenera, or in the related Scaptomyza pallida. The pogo element may be a 'middle-aged' element in the genome of D. melanogaster, having entered the species since its divergence from its sibling species, but long before the P and hobo elements.
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Affiliation(s)
- I A Boussy
- Department of Biology, Loyola University of Chicago, IL 60626
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Stebbins HM, Charles L. A bit of history. Anesth Prog 1993; 40:24. [PMID: 19598706 PMCID: PMC2148628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
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Weinhold PA, Charles L, Rounsifer ME, Feldman DA. Control of phosphatidylcholine synthesis in Hep G2 cells. Effect of fatty acids on the activity and immunoreactive content of choline phosphate cytidylyltransferase. J Biol Chem 1991; 266:6093-100. [PMID: 1848848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We examined the effect of fatty acids on phosphatidylcholine synthesis and cytidylyltransferase activity in Hep G2 cells. Treatment of Hep G2 cells with oleic acid caused an increase in the incorporation of [methyl-14C]choline into phosphatidylcholine and a corresponding decrease in radioactivity in choline phosphate using a pulse-chase procedure. This result is consistent with a fatty acid-induced increase in the cytidylyl-transferase step in the choline pathway. We measured cytidylyltransferase activity in membrane fractions and in cytosol (100,000 x g supernatant or soluble enzyme released by digitonin). The activity increased in both membrane and cytosol. Thus, an increase in total activity occurred. Cytidylyltransferase protein determined by Western blot immunoassay increased after oleic acid treatment. Immunotitration of cytidylyltransferase protein also indicated that an increase in enzyme protein resulted from oleic acid treatment. Cycloheximide did not prevent the oleic acid-induced increase in cytidylyltransferase activity. The increase in enzyme activity was apparent when we measured the activity in the presence or absence of lipid activators. Separation of cytosolic cytidylyltransferase into H- and L-forms showed that the increase in cytosolic activity was due to an increase in H-form. The amount of L-form did not change. We interpret these results to suggest that fatty acid treatment of Hep G2 cells promoted the formation of active cytidylyltransferase (H-form) from a preexisting inactive form. The increased activity was distributed between membranes and the lipoprotein form in cytosol (H-form).
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Affiliation(s)
- P A Weinhold
- Veterans Administration Medical Center, Ann Arbor, Michigan
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Weinhold PA, Charles L, Rounsifer ME, Feldman DA. Control of phosphatidylcholine synthesis in Hep G2 cells. Effect of fatty acids on the activity and immunoreactive content of choline phosphate cytidylyltransferase. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(18)38088-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Feldman DA, Rounsifer ME, Charles L, Weinhold PA. CTP:phosphocholine cytidylyltransferase in rat lung: relationship between cytosolic and membrane forms. Biochim Biophys Acta 1990; 1045:49-57. [PMID: 2164421 DOI: 10.1016/0005-2760(90)90202-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The purpose of these studies was to determine the properties of the membrane-bound cytidylyltransferase in adult lung and to assess the relationship between the microsomal enzyme and the two forms of cytidylyltransferase in cytosol. Microsomes, isolated by glycerol density centrifugation, contained significantly less cytidylyltransferase than microsomes isolated by differential centrifugation (11.6 +/- 3.2 vs. 30 +/- 11 nmol/min per g lung). The released activity was recovered as H-form cytidylyltransferase. Cytidylyltransferase activity was not removed from microsomes by washing of the microsomal pellet with homogenizing buffer. Triton X 100 extracted all of the cytidylyltransferase from microsomes. The extracted activity was similar to H-form. Chlorpromazine dissociated microsomal enzyme to L-form. Chlorpromazine has been shown previously to dissociate H-form to L-form. These results suggested that microsomal cytidylyltransferase existed in a form similar if not identical to cytosolic H-form. In vitro translocation experiments demonstrated that the L-form of cytidylyltransferase was the species which binds to microsomal membranes. Triton X 100 extraction of microsomes from translocations experiments removed the bound enzyme activity. Glycerol density fractionation indicated that the activity in the Triton extract was H-form cytidylyltransferase. We concluded that the active lipoprotein form of cytidylyltransferase (H-form) is the membrane-associated form of cytidylyltransferase in adult lung; that it is formed after the L-form binds to microsomal membranes and that cytosolic H-form is released from the membrane.
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Baranger JP, Charles L, Touraine M. [Listen to music therapy]. Soins Psychiatr 1990; 113:22-4. [PMID: 2360085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Weinhold PA, Rounsifer ME, Charles L, Feldman DA. Characterization of cytosolic forms of CTP: choline-phosphate cytidylyltransferase in lung, isolated alveolar type II cells, A549 cell and Hep G2 cells. Biochim Biophys Acta 1989; 1006:299-310. [PMID: 2557076 DOI: 10.1016/0005-2760(89)90017-9] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The subcellular forms of cytidylyltransferase (EC 2.7.7.15) in rat lung, rat liver, Hep G2 cells, A549 cells and alveolar Type II cells from adult rats were separated by glycerol density centrifugation. Cytosol prepared from lung, Hep G2 cells, A549 cells and alveolar Type II cells contained two forms of the enzyme. These species were identical to the L-Form and H-Form isolated previously from lung cytosol by gel filtration. Liver cytosol contained only the L-Form. Rapid treatment of Hep G2 cells with digitonin released all of the cytoplasmic cytidylyltransferase activity. The released activity was present in both H-Form and L-Form. The molecular weight of L-Form was determined from sedimentation coefficients and Stokes radius values to be 97,690 +/- 10,175. Thus, the L-Form appears to be a dimer of the Mr 45,000 catalytic subunit. The f/f degrees value of 1.5 indicated that the protein molecule has an axial ratio of 10, assuming a prolate ellipsoid shape. The estimated molecular weight of the H-Form was 284,000 +/- 25,000. The H-Form was dissociated into L-Form by incubation of cytosol at 37 degrees C. Triton X-100 (0.1%) and chlorpromazine (1.0 mM) also dissociated the H-Form into L-Form. Western blot analysis indicated that both forms contained the catalytic subunit. An increase in Mr 45,000 subunit coincided with the increase in cytidylyltransferase activity in L-Form, which resulted from the dissociated of H-Form. The L-Form was dependent on phospholipid for activity. The H-Form was active without lipid. Phosphatidylinositol was present in the H-Form isolated from Hep G2 cells. The phosphatidylinositol dispersed when the H-Form was dissociated into L-Form. Phosphatidylinositol and phosphatidylglycerol cause L-Form to aggregate into a form similar to H-Form. Phosphatidylcholine/oleic acid (1:1 molar ratio) and oleic acid also aggregated the L-Form. Phosphatidylcholine did not produce aggregation. We conclude that the H-Form is the active form of cytidylyltransferase in cytoplasm. The H-Form appears to be a lipoprotein consisting of an apoprotein (L-Form dimer of the Mr 45,000 subunit) complexed with lipids. A change in the relative distribution of H-Form and L-Form in cytosol would alter the cellular activity and thus may be important in the regulation of phosphatidylcholine synthesis.
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Affiliation(s)
- P A Weinhold
- Department of Biological Chemistry, University of Michigan, Ann Arbor
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Affiliation(s)
- J C Jennette
- Department of Pathology, School of Medicine, University of North Carolina at Chapel Hill 27514
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Verghese MW, Charles L, Jakoi L, Dillon SB, Snyderman R. Role of a guanine nucleotide regulatory protein in the activation of phospholipase C by different chemoattractants. The Journal of Immunology 1987. [DOI: 10.4049/jimmunol.138.12.4374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
It is well established that formyl peptide chemoattractants can activate a phospholipase C in leukocytes via a pertussis toxin (PT)-sensitive guanine nucleotide regulatory (G) protein. Whether this pathway is similarly used by chemoattractant receptors as a class has been unclear. We now report that lipid and peptide chemoattractants in direct comparative studies induced similar amounts of initial (less than or equal to 15 sec) inositol trisphosphate (IP3) release in human polymorphonuclear leukocytes, but the response to lipid chemoattractants was more transient. Production of IP3 by all chemotactic factors was inhibited by treatment of the cells with PT, indicating that chemotactic factor receptors as a class are coupled to phospholipase C via a G protein that is a substrate for ADP ribosylation by PT. The peptide and lipid factors had comparable chemotactic activity, which was also inhibitable by PT. However, transient activation of phospholipase C is apparently an insufficient signal for full cellular activation, since the lipid chemotactic factor leukotriene B4 and platelet-activating factor were poor stimuli for O2- production and lysosomal enzyme secretion compared with N-formyl-methionyl-leucyl-phenylalanine (fMet-Leu-Phe). Nonetheless, treatment with PT inhibited O2- production and enzyme secretion in response to all chemoattractants, but as previously noted, did not affect Ca2+ ionophores, lectins, or phorbol myristate acetate. Formyl peptide and lipid chemotactic factors induced similar levels of Ca2+ mobilization when monitored by Quin 2 or chlortetracycline (CTC) fluorescence. Although these responses to fMet-Leu-Phe were blocked by PT, the Quin 2 and initial CTC response to the lipid factors were only partially susceptible. Thus, the lipid factors apparently utilize an additional PT-resistant mechanism for redistributing intracellular Ca2+. This latter process requires extracellular Ca2+ and may be independent of the PT-sensitive G protein.
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Verghese MW, Charles L, Jakoi L, Dillon SB, Snyderman R. Role of a guanine nucleotide regulatory protein in the activation of phospholipase C by different chemoattractants. J Immunol 1987; 138:4374-80. [PMID: 3108387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
It is well established that formyl peptide chemoattractants can activate a phospholipase C in leukocytes via a pertussis toxin (PT)-sensitive guanine nucleotide regulatory (G) protein. Whether this pathway is similarly used by chemoattractant receptors as a class has been unclear. We now report that lipid and peptide chemoattractants in direct comparative studies induced similar amounts of initial (less than or equal to 15 sec) inositol trisphosphate (IP3) release in human polymorphonuclear leukocytes, but the response to lipid chemoattractants was more transient. Production of IP3 by all chemotactic factors was inhibited by treatment of the cells with PT, indicating that chemotactic factor receptors as a class are coupled to phospholipase C via a G protein that is a substrate for ADP ribosylation by PT. The peptide and lipid factors had comparable chemotactic activity, which was also inhibitable by PT. However, transient activation of phospholipase C is apparently an insufficient signal for full cellular activation, since the lipid chemotactic factor leukotriene B4 and platelet-activating factor were poor stimuli for O2- production and lysosomal enzyme secretion compared with N-formyl-methionyl-leucyl-phenylalanine (fMet-Leu-Phe). Nonetheless, treatment with PT inhibited O2- production and enzyme secretion in response to all chemoattractants, but as previously noted, did not affect Ca2+ ionophores, lectins, or phorbol myristate acetate. Formyl peptide and lipid chemotactic factors induced similar levels of Ca2+ mobilization when monitored by Quin 2 or chlortetracycline (CTC) fluorescence. Although these responses to fMet-Leu-Phe were blocked by PT, the Quin 2 and initial CTC response to the lipid factors were only partially susceptible. Thus, the lipid factors apparently utilize an additional PT-resistant mechanism for redistributing intracellular Ca2+. This latter process requires extracellular Ca2+ and may be independent of the PT-sensitive G protein.
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Abstract
This paper outlines the main failings of the National Health Service in respect of its purchase and use of clinical and laboratory equipment. It emphasizes the need for proper inventories and demonstrates how they can aid the more efficient use of equipment by ensuring that all purchases within a Health District are co-ordinated and that named officers are responsible for individual pieces of equipment.
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Charles L, Schain R. A four-year follow-up study of the effects of methylphenidate on the behavior and academic achievement of hyperactive children. J Abnorm Child Psychol 1981; 9:495-505. [PMID: 7328229 DOI: 10.1007/bf00917798] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Sixty-two children were evaluated 4 years after their initial referral for symptoms of hyperactivity. Behavioral measures included parent and teacher judgments of behavior and social adjustment. Academic achievement was assessed by teachers' reports, number of failed grades, special education services, and two individually administered achievement tests. Data were analyzed for the total group to determine both the extent to which presenting problems diminished over time and the major problems still present. The effects of stimulant drug therapy on outcome were assessed by dividing the children into groups according to the duration of time they had taken stimulants. Total duration of time on stimulants ranged from less than 6 months (group 1) to 4 years (group 5). Results indicated that the symptoms of hyperactivity significantly lessened, but remained higher in these children than in normal peers. Behavioral and social problems were less pervasive than academic underachievement. There were no group differences, indicating that the duration of stimulant intervention did not have a significant effect on outcome. The clinical implication of this study is that the beneficial effects of stimulant drug intervention occur within the first months after initiation of therapy. Long-term treatment does not appear to be of value in producing better outcome.
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Charles L, Schain R, Zelniker T. Optimal dosages of methylphenidate for improving the learning and behavior of hyperactive children. J Dev Behav Pediatr 1981; 2:78-81. [PMID: 7188579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The effects of methylphenidate dosages were assessed in 42 hyperactive children who were tested off drug at the beginning and end of an 18-week study and 2 weeks after initiation of various dosages. Initial methylphenidate doses of 0.2 mg/kg were increased biweekly until 0.8 mg/kg was reached or the child showed adverse personality or physiologic effects. Measures included an objective test of the ability to sustain attention and behavioral ratings completed by parents and teachers. Data were analyzed separately for groups attaining low, moderate, and high maximum doses (0.4, 0.6, and 0.8 mg/kg, respectively). For all dosage groups behavior and attention improved with increased dosage, and the best scores were associated with the highest drug levels. In contrast to previous reports, differences in optimal dosage levels for behavior and cognitive performance were not seen. This discrepancy may result from the lack of individual titration based on tolerance in earlier reports.
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Abstract
Discontinuous electrophoresis through agarose has been shown to be a satisfactory method for preparation of biologically active restriction fragments from milligram quantities of DNA. The DNA is obtained in sufficient quantity for: (1) direct use in genetic transformation, (2) the production of multiple-dimensional restriction analyses, or (3) use as a high-resolution hybridization probe.
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Abstract
The long-term effects of methylphenidate on the behavior and academic functioning of hyperactive children are described. 36 children having a positive response to methylphenidate entered a three-year follow-up study in which they were closely monitored physically, behaviorally and psychometrically. During this period 13 children spontaneously discontinued medication: there were no statistically significant differences between them and the children who continued medication in terms of age, IQ or ratings at initial interview. The greatest improvement in performance occurred in the early months of treatment, but was only partially maintained during long-term therapy and little further change occurred after medication was discontinued. The findings indicate that sustained improvement is related to factors other than continued medication, and they suggest that drug therapy should be regarded as a short-term intervention until more positive social and school behavior can be established.
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Charles L, Schain RJ, Zelniker T, Guthrie D. Effects of methylphenidate on hyperactive children's ability to sustain attention. Pediatrics 1979; 64:412-8. [PMID: 492805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The purposes of this study were to investigate the attentional characteristics of hyperactive children, the relationship of subjective and objective measures of these characteristics, and the effects of methylphenidate on these measures of attention. Forty-five hyperactive children, ages 6 to 10 years, were entered into an 18-week study of the effects of methylphenidate (Ritalin) on attention. Measures included rating scales completed by teachers and parents and a vigilance task. All measures reflected significant changes during the period of investigation. Attention and behavior were significantly improved under drug conditions and significantly worsened when methylphenidate was discontinued. However, only performance on the objective measure returned to predrug levels; final off-drug parent and teacher ratings remained improved over initial reports. Parent ratings of behavior, and specifically of children's ability to attend, were unrelated to equivalent teacher ratings. Teachers' ratings of attention correlated significantly with performance on the vigilance task, discriminated between on-drug and off-drug conditions, and discriminated between children who obtained normal or near normal predrug scores on the objective measure and those who performed poorly on this measure. Methylphenidate improved attentional performance for children who had poor predrug scores on the vigilance task, but did not produce a statistically significant change on the scores of children with normal predrug performance.
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