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Drienkó E, Ulrich U, Müller F, Knispel H, Fink J, Unger M. Endometriose-assoziierte Karzinome: eigene Fälle und Literaturübersicht. Geburtshilfe Frauenheilkd 2011. [DOI: 10.1055/s-0031-1280506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Haberer D, Vyalikh DV, Taioli S, Dora B, Farjam M, Fink J, Marchenko D, Pichler T, Ziegler K, Simonucci S, Dresselhaus MS, Knupfer M, Büchner B, Grüneis A. Tunable band gap in hydrogenated quasi-free-standing graphene. NANO LETTERS 2010; 10:3360-6. [PMID: 20695447 DOI: 10.1021/nl101066m] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We show by angle-resolved photoemission spectroscopy that a tunable gap in quasi-free-standing monolayer graphene on Au can be induced by hydrogenation. The size of the gap can be controlled via hydrogen loading and reaches approximately 1.0 eV for a hydrogen coverage of 8%. The local rehybridization from sp(2) to sp(3) in the chemical bonding is observed by X-ray photoelectron spectroscopy and X-ray absorption and allows for a determination of the amount of chemisorbed hydrogen. The hydrogen induced gap formation is completely reversible by annealing without damaging the graphene. Calculations of the hydrogen loading dependent core level binding energies and the spectral function of graphene are in excellent agreement with photoemission experiments. Hydrogenation of graphene gives access to tunable electronic and optical properties and thereby provides a model system to study hydrogen storage in carbon materials.
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Sánchez-Barriga J, Fink J, Boni V, Di Marco I, Braun J, Minár J, Varykhalov A, Rader O, Bellini V, Manghi F, Ebert H, Katsnelson MI, Lichtenstein AI, Eriksson O, Eberhardt W, Dürr HA. Strength of correlation effects in the electronic structure of iron. PHYSICAL REVIEW LETTERS 2009; 103:267203. [PMID: 20366340 DOI: 10.1103/physrevlett.103.267203] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Indexed: 05/29/2023]
Abstract
The strength of electronic correlation effects in the spin-dependent electronic structure of ferromagnetic bcc Fe(110) has been investigated by means of spin and angle-resolved photoemission spectroscopy. The experimental results are compared to theoretical calculations within the three-body scattering approximation and within the dynamical mean-field theory, together with one-step model calculations of the photoemission process. This comparison indicates that the present state of the art many-body calculations, although improving the description of correlation effects in Fe, give too small mass renormalizations and scattering rates thus demanding more refined many-body theories including nonlocal fluctuations.
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Franke RP, Fink J, Schäfer O, Brehmer U, Orth J, Schwalbe H. Ermittlung der Knochenfestigkeit beim Menschen im Rahmen der klinischen Diagnostik und Qualitätskontrolle. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1995.40.s1.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Deuse T, Weill D, Fink J, Blankenberg F, Peter C, Robbins R, Schrepfer S. IS INHALED TACROLIMUS A SAFE TREATMENT OPTION TO PREVENT ACUTE AND CHRONIC REJECTION IN AN AIRWAY TRANSPLANT MODEL? Transplantation 2008. [DOI: 10.1097/01.tp.0000330948.17928.8b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kramberger C, Hambach R, Giorgetti C, Rümmeli MH, Knupfer M, Fink J, Büchner B, Reining L, Einarsson E, Maruyama S, Sottile F, Hannewald K, Olevano V, Marinopoulos AG, Pichler T. Linear plasmon dispersion in single-wall carbon nanotubes and the collective excitation spectrum of graphene. PHYSICAL REVIEW LETTERS 2008; 100:196803. [PMID: 18518473 DOI: 10.1103/physrevlett.100.196803] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2007] [Revised: 02/01/2008] [Indexed: 05/26/2023]
Abstract
We have measured a strictly linear pi plasmon dispersion along the axis of individualized single-wall carbon nanotubes, which is completely different from plasmon dispersions of graphite or bundled single-wall carbon nanotubes. Comparative ab initio studies on graphene-based systems allow us to reproduce the different dispersions. This suggests that individualized nanotubes provide viable experimental access to collective electronic excitations of graphene, and it validates the use of graphene to understand electronic excitations of carbon nanotubes. In particular, the calculations reveal that local field effects cause a mixing of electronic transitions, including the "Dirac cone," resulting in the observed linear dispersion.
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Petersen C, Scherwath A, Fink J, Koch U. Versorgungsbedarf von Kindern und Jugendlichen mit einem Schädel-Hirn-Trauma. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2008; 51:629-36. [DOI: 10.1007/s00103-008-0536-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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58
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McKinlay A, Grace RC, Dalrymple-Alford JC, Roger D, Anderson T, Fink J. The accuracy of the Unified Parkinson's Disease Rating Scale (UPDRS—Section 1) as a screening measure for depression. Parkinsonism Relat Disord 2008; 14:170-2. [PMID: 17481937 DOI: 10.1016/j.parkreldis.2007.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2007] [Revised: 03/06/2007] [Accepted: 03/17/2007] [Indexed: 11/22/2022]
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Middleton DC, Fink J, Kowalski PJ, Lewin MD, Sinks T. Optimizing BeLPT criteria for beryllium sensitization. Am J Ind Med 2008; 51:166-72. [PMID: 18181198 DOI: 10.1002/ajim.20548] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The beryllium lymphocyte proliferation test (BeLPT) is used to identify persons sensitized to beryllium. ATSDR convened an expert panel of physicians and scientists in April 2006 to discuss this test and to consider what BeLPT test results actually establish beryllium sensitization. The three criteria proposed by panel members were (1)one abnormal result, (2)one abnormal and one borderline result, and (3)two abnormal results. METHODS Complete algorithms were developed for each of the three proposed criteria. Using single-test outcome probabilities developed by Stange et al. [2004. Am J Ind Med 46:453-462], we calculated and compared the sensitivity, specificity, and positive predictive values (PPVs) for each set of criteria. RESULTS The overall sensitivity and specificity of the three criteria were similar. When the criteria required confirmation of an abnormal result the PPV was higher--whether the requirement was satisfied by a borderline result, or only by another abnormal result. Confirmation also reduced the likelihood of false positives. The differences between the three criteria decreased as the prevalence of sensitization increased. CONCLUSIONS A single unconfirmed abnormal is usually insufficient to establish sensitization for an apparently healthy person. When the prevalence of beryllium sensitization in a group is high, however, even a single abnormal BeLPT can be a strong predictor.
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Wicklund AH, Ammar A, Weitlauf JC, Heilbronner RL, Fink J, Lee RC, Kelley K, Pliskin NH. MMPI-2 Patterns in Electrical Injury: A Controlled Investigation. Clin Neuropsychol 2008; 22:98-111. [DOI: 10.1080/13825580601025924] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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61
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Fink J, Fuhrmann R, Scharnweber T, Franke R. Stimulation of monocytes and macrophages: Possible influence of surface roughness. Clin Hemorheol Microcirc 2008. [DOI: 10.3233/ch-2008-1090] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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62
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Eldon M, Corkery K, Gribben D, Fink J, Niederman M. NKTR-061 (inhaled amikacin) delivers high lung doses in mechanically ventilated patients with pneumonia and in healthy subjects. Crit Care 2008. [PMCID: PMC4088413 DOI: 10.1186/cc6263] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Fink J, Fuhrmann R, Scharnweber T, Franke RP. Stimulation of monocytes and macrophages: possible influence of surface roughness. Clin Hemorheol Microcirc 2008; 39:205-212. [PMID: 18503127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The aim of this study was to understand the mechanisms of interaction of monocytes/macrophages and foreign body giant cell (FBGC) with implant materials, with respect to the roughness and the solubility of calcium phosphate based coatings. Anderson et al. (Bone Engineering, J.E. Davies, ed., Toronto, 2000, pp. 81-93) showed that the presence of FBGC's and monocytes/macrophages influenced the strength of the implant-tissue integration and that more monocytes/macrophages rested on smooth surfaces compared to rough surfaces. We seeded human bone marrow cells on uncoated ultrasmooth polished TiAl6V4 samples as well as on coated TiAl6V4 discs of the same diameter with two different calcium phosphates coatings, monetite (DCP) and hydroxyapatite (OHAp), both with rougher surfaces. On uncoated ultrasmooth polished TiAl6V4 discs (UUTi, diameter 16 mm, thickness 2 mm) and on TiAl6V4 discs of same diameter coated with OHAP or DCPA, human bone marrow cells (HMBC) were seeded and cultivated under standard culture conditions for 90 days without addition of inducing substances like ascorbic acid, Na-beta-glycerophosphate or dexamethasone. The roughnesses of the virgin samples were assessed with atomic force microscopy and light profilometry. After 90 days of cultivation a fraction of the samples, with cells and extracellular matrix, were stained with hematoxylin eosin (HE) and examined in light microscopy. R(a) roughness values of virgin uncoated TiAl6V4 samples were 0.001 microm, of DCP coated discs 4 microm and of OHAp coated discs 3 microm. The examination of HE stained samples showed a high number of FBGC and monocytes/macrophages on the UUTi samples. On the DCP coated samples there were less FBGC and monocytes/macrophages and on the OHAp coated samples we could not find any FBGC and monocytes/macrophages. The extracellular matrix (ECM) we found on the UUTi samples was finer and thinner than on the coated samples. The ECM was vastly spread and not dense on the UUTi samples in contrast to the calcium phosphate coated samples, where the ECM was much thicker and stronger. The ultrasmooth surface of the uncoated TiAl6V4 samples, a material which is accepted to be biocompatible, evidently induced the differentiation of cells of the monocytic lineage and the formation of FBGC out of the cell populations present in the human bone marrow.
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Inosov DS, Fink J, Kordyuk AA, Borisenko SV, Zabolotnyy VB, Schuster R, Knupfer M, Büchner B, Follath R, Dürr HA, Eberhardt W, Hinkov V, Keimer B, Berger H. Momentum and energy dependence of the anomalous high-energy dispersion in the electronic structure of high temperature superconductors. PHYSICAL REVIEW LETTERS 2007; 99:237002. [PMID: 18233401 DOI: 10.1103/physrevlett.99.237002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Indexed: 05/25/2023]
Abstract
Using high-resolution angle-resolved photoemission spectroscopy we have studied the momentum and photon energy dependence of the anomalous high-energy dispersion, termed waterfalls, between the Fermi level and 1 eV binding energy in several high-T_{c} superconductors. We observe strong changes of the dispersion between different Brillouin zones and a strong dependence on the photon energy around 75 eV, which we associate with the resonant photoemission at the Cu3p-->3d_{x;{2}-y;{2}} edge. We conclude that the high-energy "waterfall" dispersion results from a strong suppression of the photoemission intensity at the center of the Brillouin zone due to matrix element effects and is, therefore, not an intrinsic feature of the spectral function. This indicates that the new high-energy scale in the electronic structure of cuprates derived from the waterfall-like dispersion may be incorrect.
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Huber A, McCormick K, Andrew P, Beaumont P, Dalley S, Fink J, Fuchs J, Fullard K, Fundamenski W, Ingesson L, Mast F, Jachmich S, Matthews G, Mertens P, Philipps V, Pitts R, Sanders S, Zeidner W. Upgraded bolometer system on JET for improved radiation measurements. FUSION ENGINEERING AND DESIGN 2007. [DOI: 10.1016/j.fusengdes.2007.03.027] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Leung L, Serrano P, Schivo M, Parrondo A, Guo Y, Mazzantini O, Oh D, Higa M, Khatchikian F, Mollerach R, Fink J. Thermalhydraulics studies examining the feasibility for introducing slightly enriched uranium fuel into the Embalse CANDU reactor. NUCLEAR ENGINEERING AND DESIGN 2007. [DOI: 10.1016/j.nucengdes.2007.02.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Geck J, Borisenko SV, Berger H, Eschrig H, Fink J, Knupfer M, Koepernik K, Koitzsch A, Kordyuk AA, Zabolotnyy VB, Büchner B. Anomalous quasiparticle renormalization in Na0.73CoO2: role of interorbital interactions and magnetic correlations. PHYSICAL REVIEW LETTERS 2007; 99:046403. [PMID: 17678381 DOI: 10.1103/physrevlett.99.046403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2006] [Revised: 02/13/2007] [Indexed: 05/16/2023]
Abstract
We report an angular resolved photoemission study of NaxCoO2 with x approximately 0.73 where it is found that the renormalization of the quasiparticle (QP) dispersion changes dramatically upon a rotation from GammaM to GammaK. The comparison of the experimental data to the calculated band structure reveals that the quasiparticle renormalization is most pronounced along the GammaK direction, while it is significantly weaker along the GammaM direction. We discuss the observed anisotropy in terms of multiorbital effects and point out the relevance of magnetic correlations for the band structure of NaxCoO2 with x approximately 0.75.
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McKinlay A, Grace RC, Dalrymple-Alford JC, Anderson T, Fink J, Roger D. A profile of neuropsychiatric problems and their relationship to quality of life for Parkinson's disease patients without dementia. Parkinsonism Relat Disord 2007; 14:37-42. [PMID: 17627863 DOI: 10.1016/j.parkreldis.2007.05.009] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2007] [Revised: 05/12/2007] [Accepted: 05/22/2007] [Indexed: 11/20/2022]
Abstract
Neuropsychiatric problems are common in Parkinson's disease (PD) but there is little information regarding how they impact on quality of life. PD patients without dementia (49) were assessed for low mood/depression, fatigue, apathy, sleep problems and hallucinations. Measures of quality of life and motor function were also obtained. Over 77% of the patients reported symptoms consistent with one or more neuropsychiatric problems. Low mood/depression, anxiety and the presence of hallucinations predicted poorer quality of life after controlling for motor symptoms. Additional to the motor symptoms, we found that specific neuropsychiatric problems may impact on quality of life for PD patients.
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Schrepfer S, Deuse T, Reichenspurner H, Hoffmann J, Haddad M, Fink J, Fischbein MP, Robbins RC, Pelletier MP. Effect of inhaled tacrolimus on cellular and humoral rejection to prevent posttransplant obliterative airway disease. Am J Transplant 2007; 7:1733-42. [PMID: 17532751 DOI: 10.1111/j.1600-6143.2007.01858.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
This study aimed to investigate the pharmacokinetics after tacrolimus aerosol inhalation and to assess its efficacy to suppress acute and chronic airway allograft rejection. Orthotopic tracheal transplantations were performed and tacrolimus (4 mg/kg) was administered orally (PO) or via aerosol (AER). Tracheal tissue level AUCs(0-12) were similar in both treatment groups, but blood AUCs(0-12) were approximately 5.5-fold lower with AER (p < 0.001). Interestingly, only PO animals showed elevated BUN, cholesterol and triglycerides on POD 60 (p < 0.05). Histology of grafts harvested after 6 and 60 days revealed that both treatment groups were similarly effective in suppressing graft mononuclear infiltration (p < 0.001). Cellular immune activation (assessed by IFN-gamma- and IL-4-ELISPOTS), however, was far more effectively suppressed by tacrolimus PO (p < 0.001). In both treatment groups, the vigorous alloreactive IgM-antibody surge was effectively inhibited (p < 0.001). Due to the insufficient systemic cellular immunosuppression, discontinuation of tacrolimus AER resulted in a far stronger (3.5-fold) graft infiltration on POD 8 compared to PO (p < 0.001). Tacrolimus aerosol reduces systemic side effects and effectively protects the airway graft from early cellular rejection and chronic obliterative airway disease.
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Abstract
Eight elderly patients with postural hypotension who presented with transient ischaemic attacks are reported. Six patients underwent head-up tilt testing with continuous blood pressure monitoring. During tilt, postural hypotension was found in five patients and in three patients transient ischaemic attacks were reproduced. Postural hypotension is probably a rare cause of transient ischaemic attacks, but may be underrecognized.
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David T, Moore S, Fink J. VS08 3D MODELS OF BLOOD FLOW IN THE CEREBARL-VASCULATURE. ANZ J Surg 2007. [DOI: 10.1111/j.1445-2197.2007.04134_8.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Moorhead KT, Moore SM, Chase JG, David T, Fink J. 1D and 3D models of auto-regulated cerebrovascular flow. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2007; 2006:726-9. [PMID: 17271780 DOI: 10.1109/iembs.2004.1403261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The Circle of Willis (CoW) is a ring-like structure blood vessels at the base of the brain that distributes arterial blood to the cerebral mass. 1D and 3D CFD models of the Circle of Willis have been created to simulate clinical scenarios such as inclusions in afferent arteries and absent circulus vessels. Both models capture cerebral haemodynamic auto-regulation using proportional-integral controller to modify efferent artery distances to maintain optimal efferent flowrates for a given cycle geometry and afferent blood pressure. The models can be used to identify at-risk cerebral arterial geometries and conditions prior to surgery or other clinical procedures. The model is particularly relevant in this instance, with its fast execution time suitable for real-time clinical decisions and senario testing, as long as it captures the necessary details as a model would. Results show excellent correlation between models for the transient efferent flux profile with differences more than 5%. The assumption of strictly Poiseulile flow in the model allows more flow through the geometrically extreme communicating arteries than the 3D model. This discrepancy is overcome by increasing the resistance to flow in the ACoA the 1D model to better match the resistance seen in the 3D model, significantly improving correlation of the results.
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Barrios C, Johnson B, Fink J, Kurup V. Neutralization of CD86 Reduced the Th2 Immune Response in Murine Allergic Aspergillosis. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.12.493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Niederman M, Chastre J, Corkery K, Fishman R, Fink J, Luyt C, Sanchez M. Decrease in intravenous antibiotic use with adjunctive aerosolized amikacin treatment in intubated mechanically ventilated patients with Gram-negative pneumonia. Crit Care 2007. [PMCID: PMC4095151 DOI: 10.1186/cc5257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Colombier L, Grimbert D, Diot P, Chantrel G, Fink J, Vecellio None L. 127 Étude in vitro d’un nouveau système de nébulisation synchronisé à l’expiration du patient. Rev Mal Respir 2006. [DOI: 10.1016/s0761-8425(06)71955-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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