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Correa J, Mehrjoo M, Battistelli R, Lehmkühler F, Marras A, Wunderer CB, Hirono T, Felk V, Krivan F, Lange S, Shevyakov I, Vardanyan V, Zimmer M, Hoesch M, Bagschik K, Guerrini N, Marsh B, Sedgwick I, Cautero G, Stebel L, Giuressi D, Menk RH, Greer A, Nicholls T, Nichols W, Pedersen U, Shikhaliev P, Tartoni N, Hyun HJ, Kim SH, Park SY, Kim KS, Orsini F, Iguaz FJ, Büttner F, Pfau B, Plönjes E, Kharitonov K, Ruiz-Lopez M, Pan R, Gang S, Keitel B, Graafsma H. The PERCIVAL detector: first user experiments. J Synchrotron Radiat 2023; 30:242-250. [PMID: 36601943 PMCID: PMC9814071 DOI: 10.1107/s1600577522010347] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/26/2022] [Indexed: 06/17/2023]
Abstract
The PERCIVAL detector is a CMOS imager designed for the soft X-ray regime at photon sources. Although still in its final development phase, it has recently seen its first user experiments: ptychography at a free-electron laser, holographic imaging at a storage ring and preliminary tests on X-ray photon correlation spectroscopy. The detector performed remarkably well in terms of spatial resolution achievable in the sample plane, owing to its small pixel size, large active area and very large dynamic range; but also in terms of its frame rate, which is significantly faster than traditional CCDs. In particular, it is the combination of these features which makes PERCIVAL an attractive option for soft X-ray science.
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Affiliation(s)
- J. Correa
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - M. Mehrjoo
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - R. Battistelli
- Helmholtz Zentrum Berlin HZB, Hahn-Meitner-Platz 1, Berlin, Germany
| | - F. Lehmkühler
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging CUI, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - A. Marras
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - C. B. Wunderer
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - T. Hirono
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - V. Felk
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - F. Krivan
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - S. Lange
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - I. Shevyakov
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - V. Vardanyan
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - M. Zimmer
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - M. Hoesch
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - K. Bagschik
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - N. Guerrini
- Science and Technology Faculties STFC, Rutherford Appleton Laboratory RAL, Didcot, United Kingdom
| | - B. Marsh
- Science and Technology Faculties STFC, Rutherford Appleton Laboratory RAL, Didcot, United Kingdom
| | - I. Sedgwick
- Science and Technology Faculties STFC, Rutherford Appleton Laboratory RAL, Didcot, United Kingdom
| | - G. Cautero
- Elettra Sincrotrone Trieste, Trieste, Italy
| | - L. Stebel
- Elettra Sincrotrone Trieste, Trieste, Italy
| | | | - R. H. Menk
- Elettra Sincrotrone Trieste, Trieste, Italy
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5A2
| | - A. Greer
- Observatory Sciences Ltd, Cambridge, United Kingdom
| | - T. Nicholls
- Science and Technology Faculties STFC, Rutherford Appleton Laboratory RAL, Didcot, United Kingdom
| | - W. Nichols
- Diamond Light Source, Didcot, United Kingdom
| | - U. Pedersen
- Diamond Light Source, Didcot, United Kingdom
| | | | - N. Tartoni
- Diamond Light Source, Didcot, United Kingdom
| | - H. J. Hyun
- Pohang Accelerator Laboratory PAL, Pohang, Gyeongbuk 37673, Republic of Korea
| | - S. H. Kim
- Pohang Accelerator Laboratory PAL, Pohang, Gyeongbuk 37673, Republic of Korea
| | - S. Y. Park
- Pohang Accelerator Laboratory PAL, Pohang, Gyeongbuk 37673, Republic of Korea
| | - K. S. Kim
- Pohang Accelerator Laboratory PAL, Pohang, Gyeongbuk 37673, Republic of Korea
| | - F. Orsini
- Synchrotron SOLEIL, Saint Aubin, France
| | | | - F. Büttner
- Helmholtz Zentrum Berlin HZB, Hahn-Meitner-Platz 1, Berlin, Germany
| | - B. Pfau
- Max-Born-Institute MBI, Max-Born-Straße 2A, Berlin, Germany
| | - E. Plönjes
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - K. Kharitonov
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - M. Ruiz-Lopez
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - R. Pan
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - S. Gang
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - B. Keitel
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - H. Graafsma
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- Mid Sweden University, Sundsvall, Sweden
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Zimmer M, Scheuren S, Ebert T, Schaumann G, Schmitz B, Hornung J, Bagnoud V, Rödel C, Roth M. Analysis of laser-proton acceleration experiments for development of empirical scaling laws. Phys Rev E 2021; 104:045210. [PMID: 34781535 DOI: 10.1103/physreve.104.045210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
Numerous experiments on laser-driven proton acceleration in the MeV range have been performed with a large variety of laser parameters since its discovery around the year 2000. Both experiments and simulations have revealed that protons are accelerated up to a maximum cut-off energy during this process. Several attempts have been made to find a universal model for laser proton acceleration in the target normal sheath acceleration regime. While these models can qualitatively explain most experimental findings, they can hardly be used as predictive models, for example, for the energy cut-off of accelerated protons, as many of the underlying parameters are often unknown. Here we analyze experiments on laser proton acceleration in which scans of laser and target parameters were performed. We derive empirical scaling laws from these parameter scans and combine them in a scaling law for the proton energy cut-off that incorporates the laser pulse energy, the laser pulse duration, the focal spot radius, and the target thickness. Using these scaling laws, we give examples for predicting the proton energy cut-off and conversion efficiency for state-of-the-art laser systems.
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Affiliation(s)
- M Zimmer
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - S Scheuren
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - T Ebert
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - G Schaumann
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - B Schmitz
- Institute for Accelerator Science and Electromagnetic Fields, Technical University of Darmstadt, Schlossgartenstr. 8, 64289 Darmstadt, Germany
| | - J Hornung
- GSI Helmholtz Centre for Heavy Ion Research, Planckstr. 1, 64291 Darmstadt, Germany
- Friedrich-Schiller-Universität Jena, Fürstengraben 1, 07743 Jena, Germany
- Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
| | - V Bagnoud
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
- GSI Helmholtz Centre for Heavy Ion Research, Planckstr. 1, 64291 Darmstadt, Germany
| | - C Rödel
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - M Roth
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
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Hesse M, Ebert T, Zimmer M, Scheuren S, Schaumann G, Roth M. Spatially resolved online particle detector using scintillators for laser-driven particle sources. Rev Sci Instrum 2021; 92:093302. [PMID: 34598491 DOI: 10.1063/5.0052507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
Laser-based particle accelerators have been an active field of research for over two decades moving from laser systems capable of one shot every hour to systems able to deliver repetition rates in the Hz regime. Based on the advancements in laser technology, the corresponding detection methods need to develop from single to multiple use with high readout speed. Here, we present an online compact tracker of particles using scintillators with nine resolvable energy levels and a spatial resolution of 3.6 × 3.6 mm2 over the whole active area. This paper describes the design and construction of the detector, which is based on pixellated scintillators embedded inside an absorber matrix. The scintillator pixels are fiberoptically coupled to a camera system for online readout and analysis. Calibration with a radioactive source and first experimental data measuring laser accelerated ions at the PHELIX laser at GSI, Darmstadt, Germany, are presented and discussed.
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Affiliation(s)
- M Hesse
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - T Ebert
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - M Zimmer
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - S Scheuren
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - G Schaumann
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - M Roth
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
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Sliwa J, Kryza Ottou A, Pomorski M, Zimmer A, Rosner-Tenerowicz A, Zimmer M. 2725 A New Approach to the Surgical Treatment of Stage III and IV Pelvic Organ Prolapse (POP) - Preliminary Results. J Minim Invasive Gynecol 2019. [DOI: 10.1016/j.jmig.2019.09.450] [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: 10/25/2022]
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5
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Homola W, Zimmer M. Safety of amniocentesis in normal pregnancies and pregnancies considered high-risk due to fetal genetic anomalies - an observational study. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog4713.2019] [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: 11/01/2022]
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6
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Kołodziejczyk J, Blixt O, Olejnik B, Zimmer M, Ferens-Sieczkowska M. Application of lectin microarrays for the analysis of seminal plasma glycome. Andrologia 2018; 50:e13018. [PMID: 29665136 DOI: 10.1111/and.13018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2018] [Indexed: 12/16/2022] Open
Abstract
We report application of lectin microarrays, exploiting simultaneous interaction of seminal plasma samples with multiple lectins of different sugar specificities to compare the glycomes of fertile and infertile men. The results indicate reduced lectin reactivity associated with decreased fertility, especially affecting oligozoospermic subjects and probably O-glycosylation. Lectin microarrays may become a potent tool for semen analysis in search of the association of glycosylation and male fertility.
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Affiliation(s)
- J Kołodziejczyk
- Department of Chemistry and Immunochemistry, Medical University of Wrocław, Wrocław, Poland
| | - O Blixt
- Chemical Glycobiology Laboratory, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - B Olejnik
- Department of Chemistry and Immunochemistry, Medical University of Wrocław, Wrocław, Poland
| | - M Zimmer
- Department of Gynecology and Obstetrics, Medical University of Wrocław, Wrocław, Poland
| | - M Ferens-Sieczkowska
- Department of Chemistry and Immunochemistry, Medical University of Wrocław, Wrocław, Poland
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7
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Bäppler F, Zimmer M, Dietrich F, Grupe M, Wallesch M, Volz D, Bräse S, Gerhards M, Diller R. Photophysical dynamics of a binuclear Cu(i)-emitter on the fs to μs timescale, in solid phase and in solution. Phys Chem Chem Phys 2018; 19:29438-29448. [PMID: 29077123 DOI: 10.1039/c7cp05791a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding subtle aspects of photophysical behavior is the key to design and synthesize new and improved luminescent materials. We contribute to this with an in-depth photophysical characterization of the binuclear copper complex Cu(i)-NHetPHOS-tris-m-tolylphosphine (1), a member of a recently established emitter class for ultra-efficient, printed organic light-emitting diodes (OLEDs). To this end we studied 1 in solution and in solid form, i.e. neat film and KBr-pellet, by means of femtosecond time-resolved transient absorption/reflectivity, time-correlated single photon counting (TCSPC), and nanosecond time-resolved step-scan FTIR spectroscopy. Using these methods, we explore the photoinduced dynamics from ultrafast Franck-Condon state deactivation until the decay of the luminescent states. Upon photoexcitation, we observed multiexponential dynamics in both solution (e.g. acetonitrile 0.8 ps, 59 ps, 3 ns, 11-13 ns) and in solid state (e.g. neat film 0.3 ps, 35 ps, 670 ps, 0.5-1 μs, 3.5-4.5 μs) with four to five time-constants that significantly depend on the type of sample. Quantum chemical calculations at the DFT level in combination with step-scan vibrational spectroscopy provided structural information about the electronic ground state S0 and the lowest lying excited state T1, and show that the latter is populated within 1 μs after photoexcitation. We found thermally activated delayed fluorescence (TADF) for this complex, which has been suggested to be the cause for its high efficiency in printed OLED devices. The results suggest that non-radiative processes, lowering the luminescence quantum yield in solution, are active on the ns to μs timescale.
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Affiliation(s)
- F Bäppler
- Physics Department, TU Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany.
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Rouse T, Aubry G, Cho Y, Zimmer M, Lu H. A programmable platform for sub-second multichemical dynamic stimulation and neuronal functional imaging in C. elegans. Lab Chip 2018; 18:505-513. [PMID: 29313542 PMCID: PMC5790607 DOI: 10.1039/c7lc01116d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Caenorhabditis elegans (C. elegans) is a prominent model organism in neuroscience, as its small stereotyped nervous system offers unique advantages for studying neuronal circuits at the cellular level. Characterizing temporal dynamics of neuronal circuits is essential to fully understand neuronal processing. Characterization of the temporal dynamics of chemosensory circuits requires a precise and fast method to deliver multiple stimuli and monitor the animal's neuronal activity. Microfluidic platforms have been developed that offer an improved control of chemical delivery compared to manual methods. However, stimulating an animal with multiple chemicals at high speed is still difficult. In this work, we have developed a platform that can deliver any sequence of multiple chemical reagents, at sub-second resolution and without cross-contamination. We designed a network of chemical selectors wherein the chemical selected for stimulation is determined by the set of pressures applied to the chemical reservoirs. Modulation of inlet pressures has been automated to create robust, programmable sequences of subsecond chemical pulses. We showed that stimulation with sequences of different chemicals at the second to sub-second range can generate different neuronal activity patterns in chemosensory neurons; we observed previously unseen neuronal responses to a controlled chemical stimulation. Because of the speed and versatility of stimulus generated, this platform opens new possibilities to investigate neuronal circuits.
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Affiliation(s)
- T Rouse
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332, USA.
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9
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Zimmer M, Bergdolt M, Follmann P, Pohler J, Schumacher B, Kriebel T. Isolated Left Ventricular Apical Hypoplasia in a 9-Year-old Girl: A Rare Differential Diagnosis for Dilatated Cardiomyopathy. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1628340] [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: 10/28/2022]
Affiliation(s)
- M. Zimmer
- Department of Pediatrics, Westpfalz-Klinikum Kaiserslautern, Kaiserslautern, Germany
| | - M. Bergdolt
- Department of Cardiology, Westpfalz-Klinikum Kaiserslautern, Kaiserslautern, Germany
| | - P. Follmann
- Department of Pediatrics, Westpfalz-Klinikum Kaiserslautern, Kaiserslautern, Germany
| | - J. Pohler
- Department of Pediatrics, Westpfalz-Klinikum Kaiserslautern, Kaiserslautern, Germany
| | - B. Schumacher
- Department of Cardiology, Westpfalz-Klinikum Kaiserslautern, Kaiserslautern, Germany
| | - T. Kriebel
- Department of Pediatrics, Westpfalz-Klinikum Kaiserslautern, Kaiserslautern, Germany
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Noack T, Lurz P, Besler C, Forner A, Bevilaqua C, Seeburger J, Rommel KP, Blazek S, Hartung P, Zimmer M, Mohr FW, Schuler G, Ender J, Linke A. Transcatheter Treatment of Tricuspid Regurgitation Using Edge-to-Edge Repair: Procedural Results, Clinical Implications and Predictors for Success. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1627922] [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: 10/28/2022]
Affiliation(s)
- T. Noack
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - P. Lurz
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - C. Besler
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - A. Forner
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - C. Bevilaqua
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - J. Seeburger
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - K.-P. Rommel
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - S. Blazek
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - P. Hartung
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - M. Zimmer
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - F.-W. Mohr
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - G. Schuler
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - J. Ender
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
| | - A. Linke
- Heart Centre Leipzig, University Leipzig, Leipzig, Germany
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Rosner-Tenerowicz A, Wiatrowski A, Pomorski M, Śliwa J, Kryza-Ottou A, Zimmer A, Zimmer M. Hysteroscopic Treatment of Robert's Uterus. J Minim Invasive Gynecol 2017. [DOI: 10.1016/j.jmig.2017.08.387] [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: 11/29/2022]
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12
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Vernarelli J, Zimmer M. In Support of SNAP: Children Who Participate in SNAP Have Better Diets than Children Who Do Not. J Acad Nutr Diet 2017. [DOI: 10.1016/j.jand.2017.08.101] [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: 11/16/2022]
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Zimmer M, Waßmer R, Oberndörfer D, Wilken V, Latasch L, Schier W, Byhahn C. Patientensicherheit im hessischen Rettungsdienst. Notf Rett Med 2015. [DOI: 10.1007/s10049-015-1986-4] [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: 11/29/2022]
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14
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Zimmer M, Rupp F, Singer P, Walz F, Breher F, Klopper W, Diller R, Gerhards M. Time-resolved IR spectroscopy of a trinuclear palladium complex in solution. Phys Chem Chem Phys 2015; 17:14138-44. [DOI: 10.1039/c5cp00959f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Time-resolved IR spectroscopic methods covering the femto- to microsecond range in combination with (TD-)DFT computations were used to investigate the electronically excited state structure of a trinuclear Pd complex.
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Affiliation(s)
- M. Zimmer
- Chemistry Department and Research Center Optimas
- TU Kaiserslautern
- 67663 Kaiserslautern
- Germany
| | - F. Rupp
- Physics Department
- TU Kaiserslautern
- 67663 Kaiserslautern
- Germany
| | - P. Singer
- Physics Department
- TU Kaiserslautern
- 67663 Kaiserslautern
- Germany
| | - F. Walz
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - F. Breher
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - W. Klopper
- Institute of Physical Chemistry
- Karlsruhe Institute of Technology (KIT)
- 76131 Karlsruhe
- Germany
| | - R. Diller
- Physics Department
- TU Kaiserslautern
- 67663 Kaiserslautern
- Germany
| | - M. Gerhards
- Chemistry Department and Research Center Optimas
- TU Kaiserslautern
- 67663 Kaiserslautern
- Germany
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Pomorski M, Rosner-Tenerowicz A, Fuchs T, Woyton R, Zimmer M. Complete separation of the uterine cesarean section scar – a new cause of secondary infertility? Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.963] [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: 10/24/2022]
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Fuchs T, Pomorski M, Lepka P, Tomiałowicz MT, Woytoń RW, Zimmer A, Zimmer M. Ultrasonographic pattern of spontaneous resolving fetal ovarian cyst: a case report. CLIN EXP OBSTET GYN 2014. [DOI: 10.12891/ceog15952014] [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: 11/01/2022]
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Fuchs T, Pomorski M, Lepka P, Tomiałowicz M, Woytoń R, Zimmer A, Zimmer M. Ultrasonographic pattern of spontaneous resolving fetal ovarian cyst: a case report. CLIN EXP OBSTET GYN 2014; 41:78-79. [PMID: 24707690] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Fetal ovarian cyst is diagnosed at the rate of one per 2,500 live births and its behaviour in utero may range from spontaneous resolution with no further consequences to torsion, necrosis, and to the necessity of surgical treatment in the postnatal stage. Ovarian cyst torsion in a fetus results in the loss of its reproductive function in adult life. The authors present a case of spontaneous resolving fetal ovarian cyst. The lesion was diagnosed during an ultrasound scan in 30th week of pregnancy. An ultrasound scan performed two weeks later revealed symptoms of cyst torsion; the lesion was 5.7 cm in diameter, heterogeneous, and had a normoechogenic inside. A subsequent ultrasound exam showed a lesion with a diameter of 2.16 cm. An ultrasound exam of the newborn's abdominal cavity performed on the second day showed that the cyst was six mm in diameter. However, the cyst did not show on an ultrasound scan made on the fourth day.
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Zimmer M, Fuchs T, Pomorski M, Geneja R, Krolak-Olejnik B, Lachowska M, Paluszynska D. Extremely delayed delivery of second and third fetus in spontaneous triplet pregnancy. J OBSTET GYNAECOL 2013; 33:524. [PMID: 23815214 DOI: 10.3109/01443615.2013.783005] [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: 11/13/2022]
Affiliation(s)
- M Zimmer
- Department of Gynecology and Obstetrics, Wroclaw Medical University, Wroclaw, Poland
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Nabzdyk EM, Pietkiewicz A, Rosner-Tenerowicz A, Woyton R, Zimmer M. M449 HAS THE EXPERIENCE OF SURGICAL TEAM INFLUENCE ON NUMBER AND REASON OF CONVERSION THE LAPAROSCOPY INTO THE LAPAROTOMY? Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61639-7] [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: 11/16/2022]
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Beer AM, Fey S, Zimmer M, Teske W, Schremmer D, Wiebelitz KR. [Effectiveness and safety of a homeopathic drug combination in the treatment of chronic low back pain. A double-blind, randomized, placebo-controlled clinical trial]. MMW Fortschr Med 2012; 154 Suppl 2:48-57. [PMID: 23424755 DOI: 10.1007/s15006-012-0304-z] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND The homeopathic drug combination Lymphdiaral Basistropfen is established in the treatment of edema and swellings. This is the first time the effectiveness and safety was investigated in the treatment of chronic low back pain. METHODS The study is a randomized, double-blind, placebo-controlled trial. From December 2003 to May 2007 248 patients aged 18 to 75 years were screened, 228 were randomized, 221 started therapy, in 192 the progress was measured (103 verum vs. 89 placebo), 137 completed the study (72 verum vs. 65 placebo). They received 10 drops of verum or placebo solution three times daily for 105 days additionally to an inpatient complex naturopathic treatment. RESULTS The hannover functional ability questionnaire score (primary outcome measure) tends to increase in the intention-to-treat-analysis (verum: 6.6 vs. placebo: 3.4; p = 0.11) and increases significantly in the per-protocol-analysis (verum: 9.4 vs. placebo: 4.1; p = 0.029). The treatment was well tolerated (92.9% vs. 95.4%). The incidence of adverse reactions and serious adverse reactions was similar in both treatment groups. CONCLUSIONS This first randomized, double-blind, placebo-controlled trial shows, that the homeopathic drug combination can improve the treatment of chronic low back pain.
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Schwab C, Wolf A, Graf M, Nekarda J, Kästner G, Zimmer M, Kühnhold S, Hofmann M, Biro D, Preu R. Passivation of Inline Wet Chemically Polished Surfaces for Industrial PERC Devices. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.egypro.2012.07.112] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Arlinghaus E, Zimmer M, Witteler A, Saul F, Mathias K. Brauchen wir eine EKG-Triggerung für die computertomographischen Messungen zur Planung eines endovaskulären transaortalen oder transapikalen Aortenklappenersatzes (TAVI)? ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279490] [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: 10/18/2022]
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Waßmer R, Zimmer M, Oberndörfer D, Wilken V, Ackermann H, Breitkreutz R. Kann durch eine einfache Schulung das Kommunikations- und Patientenübergabemanagement in der Notfallmedizin verbessert werden? Notf Rett Med 2010. [DOI: 10.1007/s10049-010-1321-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Milnerowicz-Nabzdyk E, Zimmer M, Tlolka J, Michniewicz J, Kryza A, Borowiec Z. P124 Chosen parameters of umbilical cord morphology in pregnancies complicated with intrauterine growth retardation (IUGR) associated with pregnancy induced hypertension (PIH), smoking cigarettes or with idiopathic IUGR. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61615-5] [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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Schumacher A, Faust-Tinnefeldt G, Geissler H, Mutschler E, Zimmer M. Untersuchungen potentieller Interaktionen von Diclofenac-Natrium (Voltaren®) mit den Basistherapeutika Gold, D-Penicillamin, Chloroquin, Azathioprin und mit Prednisolon. AKTUEL RHEUMATOL 2008. [DOI: 10.1055/s-2008-1051052] [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: 10/21/2022]
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Mezger M, Steffens M, Semmler C, Arlt EM, Zimmer M, Kristjanson GI, Wienker TF, Toliat MR, Kessler T, Einsele H, Loeffler J. Investigation of promoter variations in dendritic cell-specific ICAM3-grabbing non-integrin (DC-SIGN) (CD209) and their relevance for human cytomegalovirus reactivation and disease after allogeneic stem-cell transplantation. Clin Microbiol Infect 2007; 14:228-34. [PMID: 18076668 DOI: 10.1111/j.1469-0691.2007.01902.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Promoter variations in Toll-like receptor genes (n = 7) and genes encoding pathogen recognition and virus entry receptors (n = 7) were screened to detect any association with human cytomegalovirus (hCMV) reactivation and disease in patients following allogeneic stem-cell transplantation. Two single nucleotide polymorphisms (rs735240, G>A; rs2287886, C>T) in the promoter region of the dendritic cell-specific ICAM3-grabbing non-integrin (DC-SIGN) showed a significant association with an increased risk of development of hCMV reactivation and disease. Furthermore, these genetic markers influenced the expression levels of DC-SIGN on immature dendritic cells, as well as the infection efficiency of immature dendritic cells by hCMV, as determined by hCMV immediate-early antigen staining. Screening of patients following allogeneic stem-cell transplantation for the presence of these defined genetic polymorphisms might help to predict the individual risk of hCMV reactivation and disease.
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Affiliation(s)
- M Mezger
- Julius-Maximilians-Universität Würzburg, Medizinische Klinik II, Würzburg, Germany
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Abstract
A 49-year-old woman was admitted to the intensive care ward with increasing shortness of breath due to a massive soft tissue swelling of the neck and face and a marked macroglossia. Similar symptoms were already observed earlier in the patient as well as her father, although such symptoms were never as dramatic as they were on this occasion. The patient was intubated bronchoscopically and treated unsuccessfully with cortisone, fresh plasma und C1-esterase inhibitor. The patient only first reported intake of an ACE inhibitor a few days after the acute episode, which was most probably the causative factor given that serum C1 and C4 complement factors were almost normal.
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Affiliation(s)
- M G Dehne
- Abteilung Anästhesie, Intensivmedizin, Notfallmedizin und Schmerztherapie, Verbundkrankenhaus Bernkastel/Wittlich, Koblenzer Str. 91, 54516 Wittlich.
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Reif A, Melchers M, Strobel A, Jacob CP, Herterich S, Lesch KP, Zimmer M. FZD3 is not a risk gene for schizophrenia: a case-control study in a Caucasian sample. J Neural Transm Suppl 2007:297-301. [PMID: 17982906 DOI: 10.1007/978-3-211-73574-9_36] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND Polymorphisms in the human frizzeled-3 (FZD3) gene have been associated with schizophrenia in an Asian population sample. However, this finding could not be confirmed in subsequent studies investigating other populations. Here we attempted to replicate this finding in a sample of 192 German chronically ill schizophrenic subjects. METHODS Three single nucleotide polymorphisms in the FZD3 gene have been genotyped by primer extension and MALDI-TOF measurement. Subsequently, associations for single markers as well as haplotypes were tested. RESULTS In German patients, neither single markers nor haplotypes in FZD3 were associated with schizophrenia. Further exploratory analyses using a different diagnostic approach did also not yield significant results. CONCLUSIONS FZD3 is unlikely to play a role in the genetic predisposition towards schizophrenia in the Caucasian population.
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Affiliation(s)
- A Reif
- Department of Psychiatry and Psychotherapy, Molecular and Clinical Psychobiology, University of Würzburg, Würzburg, Germany.
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Kinsley CB, Crolla AM, Kuyucak N, Zimmer M, Laflèche A. Nitrogen dynamics in a constructed wetland system treating landfill leachate. Water Sci Technol 2007; 56:151-8. [PMID: 17802850 DOI: 10.2166/wst.2007.521] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A pilot scale treatment system was established in 2002 at the Laflèche Landfill in Eastern Ontario, Canada. The system consists of a series of treatment steps: a stabilisation basin (10,000 m3), a woodland peat trickling filter (5,200 m2), a subsurface flow constructed wetland planted in Phragmites sp. (2,600 m2), a surface flow constructed wetland planted in Typha sp. (3,600 m2) and a polishing pond (3,600 m2). The system operates from May to December with leachate being recycled within the landfill during the winter months. Hydraulic loading was increased three-fold over four operating seasons with nitrogen and organic mass loading increasing six-fold. Excellent removal efficiencies were observed with 93% BOD5, 90% TKN and 97% NH4-N removed under the highest loading conditions. Almost complete denitrification was observed throughout the treatment system with NO3-N concentrations never exceeding 5mg L(-1). The peat filter reached treatment capacity at a hydraulic loading of 4cm d(-1) and organic loading rate of 42 kg BOD ha(-1) d(-1), which is consistent with design criteria for vertical flow wetland systems and intermittent sand filters, The first order plug flow kinetic model was effective at describing TKN and ammonium removal in the SSF and FWS wetlands when background concentrations were taken into account. Ammonium removal k-values were consistent with the literature at 52.6 and 57.7 yr(-1) for the SSF and FWS wetlands, respectively, while TKN k-values at 6.9 and 7.7 yr(-1) were almost an order of magnitude lower than literature values, suggesting that leachate TKN could contain refractory organics not found in domestic wastewater.
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Affiliation(s)
- C B Kinsley
- Campus d'Alfred--Université de Guelph, 31 St. Paul St., Alfred, Ontario, K0B 1A0, Canada.
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Nasseri B, Zimmer M, Ewert P, Abdul-Khaliq H, Hübler M, Alexi-Meskishvili V, Delmo Walter EM, Stein J, Weng Y, Berger F, Hetzer R. Long-term survival and freedom from reintervention in patients with congenital aortic stenosis. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967324] [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: 10/21/2022]
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Nasseri B, Abdul-Khaliq H, Zimmer M, Hübler M, Alexi-Meskishvili V, Weng YG, Berger F, Hetzer R. Freedom from aortic valve replacement in pediatric patients with congenital aortic stenosis after initial balloon valvuloplasty versus operative commissurotomy. Thorac Cardiovasc Surg 2006. [DOI: 10.1055/s-2006-925680] [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: 10/19/2022]
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Kovacs I, Zimmer M, Kovacs G. Electrophysiological correlates of contour integration in human visual cortex. J Vis 2005. [DOI: 10.1167/5.8.974] [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: 11/24/2022] Open
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Kovacs G, Zimmer M, Harza I, Banko E, Antal A, Vidnyanszky Z. Testing for translation invariance reveals two stages of facial adaptation. J Vis 2005. [DOI: 10.1167/5.8.833] [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: 11/24/2022] Open
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Luo J, Zimmer M, Miller D, Rao P, Mistretta M, Spies S. SU-FF-I-43: Problems and Techniques in Gamma Camera Imaging of Yttrium-90 Labeled Radiopharmaceuticals. Med Phys 2005. [DOI: 10.1118/1.1997523] [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: 11/07/2022] Open
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Luo J, Rao P, Zimmer M, Polis M, Mistretta M, Spies S. SU-FF-I-42: Imaging Technique in Estimating Lung Shunting of Yttrium-90 Microspheres. Med Phys 2005. [DOI: 10.1118/1.1997522] [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: 11/07/2022] Open
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Werhane H, Lopez P, Mendel M, Zimmer M, Ordal GW, Márquez-Magaña LM. The last gene of the fla/che operon in Bacillus subtilis, ylxL, is required for maximal sigmaD function. J Bacteriol 2004; 186:4025-9. [PMID: 15175317 PMCID: PMC419943 DOI: 10.1128/jb.186.12.4025-4029.2004] [Citation(s) in RCA: 15] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
ylxL was found to be the last gene of the fla/che operon in Bacillus subtilis and is cotranscribed with the gene for the flagellum-specific alternate sigma factor, sigma(D). The ylxL gene was disrupted by insertional mutagenesis, and the resultant mutant strain was found to be compromised for sigma(D)-dependent functions.
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Affiliation(s)
- H Werhane
- Department of Biology, San Francisco State University, 1600 Holloway Ave., San Francisco, CA 94132, USA
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Engel JM, Junger A, Zimmer M, Hartmann B, Benson M, Röhrig R, Banzhaf A, Hempelmann G. [Correlation of a computerized SOFA score and derived measures with length of stay at an operative ICU]. Anasthesiol Intensivmed Notfallmed Schmerzther 2003; 38:397-402. [PMID: 12759875 DOI: 10.1055/s-2003-39358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE The purpose of this study was to assess whether or not the information on progression of illness and therapeutic interventions included in a computerized SOFA (Sequential Organ Failure Assessment) score and derived measures (maximum SOFA, total maximum SOFA and delta SOFA) influences the correlation with length of stay (LOS) at an operative intensive care unit (ICU). METHODS During a period of one year 524 patients aging over 18 years who stayed more than 24 hours at an operative ICU were included into this study. Based on SQL scripts (Structured Query Language), a computerized SOFA score and the derived measures "maximum-SOFA", "total-maximum-SOFA" and "delta-SOFA" of all patients were retrospectively calculated for each day at ICU using routine data recorded with the patient data management system ICUData (IMESO GmbH, Hüttenberg, Germany). "Maximum-SOFA" and "total-maximum-SOFA" are measures for the severity of illness or cumulative organ dysfunction. "Delta-SOFA" measures the magnitude of organ dysfunction developing during ICU stay and is therefore potentially influenced by therapeutic measures. Analysis was based on exact LOS in hours. RESULTS Mean LOS of the whole collective was 5.2 +/- 6.8 days (median 2.8, range 1 - 51). Correlation of LOS depending on score results increased from "admission-SOFA" (r = 0.280), to "maximum-SOFA" (r = 0.444), "total-maximum-SOFA" (r = 0.503), and "delta-SOFA" (r = 0.576). CONCLUSION Therefore, the sum of information on progression of illness and therapeutic interventions included in derived measures improves the correlation with LOS at an ICU compared to the "admission-SOFA".
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Affiliation(s)
- J M Engel
- Abteilung Anaesthesiologie, Intensivmedizin, Schmerztherapie, Universitätsklinikum, Giessen, Germany
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Zimmer M, Pennings SC, Buck TL, Carefoot TH. Species-specific patterns of litter processing by terrestrial isopods (Isopoda: Oniscidea) in high intertidal salt marshes and coastal forests. Funct Ecol 2002. [DOI: 10.1046/j.1365-2435.2002.00669.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Green fluorescent protein (GFP) is an extensively used fluorescent tag. Photoisomerization between two spectroscopically distinct states in wild-type GFP is responsible for its two visible absorption bands at 398 nm (A) and 475 nm (B). We have used molecular mechanics and database analysis to support the suggestion of other researchers that the anionic form of the GFP chromophore is responsible for the B absorption band, while the phenol form is responsible for band A. The anionic (-Otyr, Nimid, Glu222H) species is the only form that has a low energy pathway allowing for isomerization of Thr203 to a conformation where it stabilizes the phenolate form and is therefore the most likely species responsible for the B absorption band. The rotation of the Thr203 side-chain is restricted; this may be significant in the formation of the intermediate state which is central to the photoisomerization. Our calculations support the most commonly accepted mechanism for photoisomerization, and we have shown that the 201LSTQS205 sequence does not allow a g+ conformation for Thr203.
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Affiliation(s)
- A Warren
- Chemistry Department, Connecticut College, New London, CT 06320, USA
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Kadish AH, Mayuga KA, Yablon Z, Schaechter A, Goldberger JJ, Passman RS, Palmer A, Zimmer M, Davidson CJ. Effectiveness of shielding for patients during cardiac catheterization or electrophysiologic testing. Am J Cardiol 2001; 88:1320-3. [PMID: 11728367 DOI: 10.1016/s0002-9149(01)02100-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- A H Kadish
- Division of Cardiology and Department of Internal Medicine, Northwestern University, Chicago, Illinois 60611, USA.
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Milnerowicz-Nabzdyk E, Zimmer M, Pajak J, Omanwa K, Heimrath J. [The usefulness of hysteroscopy and hysterosalpingography in diagnosis of tubal infertility]. Ginekol Pol 2001; 72:1355-9. [PMID: 11883278] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
OBJECTIVES To estimate the usefulness of hysteroscopy (HSC) and hysterosalpingography (HSG) examination on a retrospective study. DESIGN Canulisation and morphology of ovarian tube detected during HSG and reactivity of uterine tubal ostia observed in HSC were compared. MATERIAL AND METHODS The results of HSG and HSC examination performed on 125 young infertile women whom the tubal uterine factor of infertility was suspected were analyzed 250 ovarian tubes, after previous selection were taken into consideration. The analysis had a retrospective character. RESULTS The analyzed group of women were divided into 3 group which differed from each other in reactivate of uterine ostia of the ovarian tubes. The first group first with correct reactivity of tubal ostia was the largest. The authors observed canulisation, which was the best in the first group and morphologic changes in the internal structure of the ovarian tubes. The highest percentage of these changes were observed in group three with unreactive uterine ostia. CONCLUSIONS The HSG and HSC examination are supplementary examinations. The use of both methods together increases their diagnostic value and gives a more correct estimation of tubal status.
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Abstract
Freeze-dried fibers of smooth muscle from Taenia coli were used to determine the concentration of calmodulin responsible for contraction. About 10% of the total intracellular calmodulin (12.6 mumol/kg wet wt) is directly involved in initiation of smooth muscle contraction.
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Tiemann C, Vogel A, Dufaux B, Zimmer M, Krone JR, Hagedorn HJ. Rapid DNA typing of HLA-B27 allele by real-time PCR using lightcycler technology. Clin Lab 2001; 47:131-4. [PMID: 11294575] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
For clinical diagnostic routine we developed a fast DNA typing of HLA-B27 by PCR and real-time detection using LightCycler technology. The method combines the sensitivity and specificity of PCR with the swiftness of the LightCycler system. The amplification step was performed with a primer set coding for a region in the third exon common to B*2701 to B*2705. The PCR cycles were monitored continuously using the SYBR Green I dye. Beta-globin was used as an internal control. An analysis of 32 samples with one PCR run was completed within 40 minutes. After amplification a melting curve analysis permitted the accurate identification of the PCR amplicons. The mean melting temperatures (Tm) were 90.5 degrees C and 87.3 degrees C, which are characteristic for HLA-B27 and beta-globin, respectively. A comparison of 300 samples which were typed for HLA-B27 with a conventional sequence-specific polymerase chain reaction (SSP-PCR) and with the new method demonstrated a perfect correlation (specificity 100%). In summary, the method described is fast, reliable, cost-effective and well adapted for routine laboratory testing.
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Affiliation(s)
- C Tiemann
- Labor Dr. Krone und Partner, Medizinal-Untersuchungsstelle, Herford, Germany.
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