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Jacobi T, Scheffler L, Scholz M, Schuch A, Stumvoll M, Tönjes A, Klöting N, Blüher M, Kovacs P. Protektiv- und Risiko-HLA Allele für Typ 2 Diabetes Mellitus in 3 deutschen Kohorten. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1657796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Marciniak Ł, Akel M, Kulińska A, Scholz M, Lee S, Kunze HJ, Saw SH. Measurements and Simulations of Neutron Emission Versus Deuterium Filling Pressure in Plasma Focus Device PF-24. JOURNAL OF FUSION ENERGY 2018. [DOI: 10.1007/s10894-018-0157-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Nitsch S, Braun F, Ritter S, Scholz M, Schroeder IS. Functional video-based analysis of 3D cardiac structures generated from human embryonic stem cells. Stem Cell Res 2018; 29:115-124. [PMID: 29655161 DOI: 10.1016/j.scr.2018.03.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/21/2018] [Accepted: 03/26/2018] [Indexed: 12/19/2022] Open
Abstract
Human embryonic stem cells (hESCs) differentiated into cardiomyocytes (CM) often develop into complex 3D structures that are composed of various cardiac cell types. Conventional methods to study the electrophysiology of cardiac cells are patch clamp and microelectrode array (MEAs) analyses. However, these methods are not suitable to investigate the contractile features of 3D cardiac clusters that detach from the surface of the culture dishes during differentiation. To overcome this problem, we developed a video-based motion detection software relying on the optical flow by Farnebäck that we call cBRA (cardiac beat rate analyzer). The beating characteristics of the differentiated cardiac clusters were calculated based on the local displacement between two subsequent images. Two differentiation protocols, which profoundly differ in the morphology of cardiac clusters generated and in the expression of cardiac markers, were used and the resulting CM were characterized. Despite these differences, beat rates and beating variabilities could be reliably determined using cBRA. Likewise, stimulation of β-adrenoreceptors by isoproterenol could easily be identified in the hESC-derived CM. Since even subtle changes in the beating features are detectable, this method is suitable for high throughput cardiotoxicity screenings.
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Burger PHM, Scholz M. Gender as an underestimated factor in mental health of medical students. Ann Anat 2018; 218:1-6. [PMID: 29551695 DOI: 10.1016/j.aanat.2018.02.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/13/2018] [Accepted: 02/19/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND In Germany, currently two out of three medical students are female. Several studies corroborate that medical students show a significantly higher prevalence of stress-related mental disorders than the population in general. AIMS We aimed to evaluate, if gender has an influence on the distribution of mental stress parameters and learning style among male and female medical students. METHODS We investigated a total of 758 students of the medical faculty at the University of Erlangen-Nuernberg, Germany, using standardized and validated psychological questionnaires on depressive symptoms (BDI-II), burnout (BOSS-II) and quality of life (SF-12). In addition, we screened the students for their learning styles according to Kolb. RESULTS Out of 723 participants who declared their gender, 57.8% were female and 37.6% were male. Female students showed significantly higher values for depressiveness as well as for emotional and cognitive burnout, whereas the mental quality of life was significantly lower. A considerably higher percentage of male students with a converging or an accommodating learning style were found in comparison to their female fellows. CONCLUSIONS We postulate that an adaptation of the medical curriculum content to the investigated factors may contribute to a higher mental stability and less stress-related symptoms in medical students.
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Ahnert P, Creutz P, Schwarzenberger F, Kiehntopf M, Bauer M, Völker U, Chakraborty T, Löffler M, Suttorp N, Scholz M. Sequential Organ Failure Assessment (SOFA) Score as Operationalization of Disease Severity of hospitalized Community acquired Pneumonia (CAP). Pneumologie 2018. [DOI: 10.1055/s-0037-1619377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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81
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Bauer M, Kirsten H, Grunow E, Ahnert P, Kiehntopf M, Creutz P, Löffler M, Suttorp N, Scholz M. Gene expression patterns in blood predict future severe endpoints in community acquired pneumonia. Pneumologie 2018. [DOI: 10.1055/s-0037-1619138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Creutz P, Ahnert P, Kirsten H, Kiehntopf M, Bauer M, Völker U, Chakraborty T, Scholz M, Löffler M, Suttorp N. Prediction of 28 day mortality and need for ICU treatment in the PROGRESS Study by CAP severity scores. Pneumologie 2018. [DOI: 10.1055/s-0037-1619137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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83
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Posa A, Paulsen F, Dietz R, Garreis F, Sander R, Schicht M, Sel S, Scholz M, Hammer CM, Bräuer L. Quantification of surfactant proteins in tears of patients suffering from dry eye disease compared to healthy subjects. Ann Anat 2018; 216:90-94. [DOI: 10.1016/j.aanat.2017.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 11/15/2017] [Accepted: 11/15/2017] [Indexed: 10/18/2022]
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Agyare C, Spiegler V, Asase A, Scholz M, Hempel G, Hensel A. An ethnopharmacological survey of medicinal plants traditionally used for cancer treatment in the Ashanti region, Ghana. JOURNAL OF ETHNOPHARMACOLOGY 2018; 212:137-152. [PMID: 29066406 DOI: 10.1016/j.jep.2017.10.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/09/2017] [Accepted: 10/19/2017] [Indexed: 06/07/2023]
Abstract
AIMS Cancer represents a major health burden and drain on healthcare resources in the world. The majority of the people of Africa still patronize traditional medicine for their health needs, including various forms of cancer. The aim of the following study is the identification of medicinal plants used for cancer treatment by the traditional healers in the Ashanti area of Ghana and to cross-reference the identified plant species with published scientific literature. METHODOLOGY Validated questionnaires were administered to 85 traditional healers in 10 communities within Ashanti region. For cross-validation, also 7 healers located outside Ashanti region were investigated to evaluate regional differences. Interviews and structured conversations were used to administer the questionnaires. Selected herbal material dominantly used by the healers was collected and identified. RESULTS The ethnopharmacological survey revealed 151 plant species used for cancer treatment. Identified species were classified into different groups according to their frequency of use, resulting in the "top-22" plants. Interestingly group I (very frequent use) contained 5 plant species (Khaya senegalensis, Triplochiton scleroxylon, Azadirachta indica, Entandrophragma angolense, Terminalia superba), three of which belong to the plant family Meliaceae, phytochemically mainly characterized by the presence of limonoids. Cross-referencing of all plants identified by current scientific literature revealed species which have not been documented for cancer therapy until now. Special interest was laid on use of plants for cancer treatment of children. CONCLUSION A variety of traditionally used anti-cancer plants from Ghana have been identified and the widespread use within ethnotraditional medicine is obvious. Further in vitro and clinical studies will be performed in the near future to rationalize the phytochemical and functional scientific background of the respective extracts for cancer treatment.
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Saager M, Peschke P, Welzel T, Huang L, Brons S, Grün R, Scholz M, Debus J, Karger CP. Late normal tissue response in the rat spinal cord after carbon ion irradiation. Radiat Oncol 2018; 13:5. [PMID: 29325596 PMCID: PMC5765675 DOI: 10.1186/s13014-017-0950-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 12/29/2017] [Indexed: 12/17/2022] Open
Abstract
Background The present work summarizes the research activities on radiation-induced late effects in the rat spinal cord carried out within the “clinical research group ion beam therapy” funded by the German Research Foundation (DFG, KFO 214). Methods and materials Dose–response curves for the endpoint radiation-induced myelopathy were determined at 6 different positions (LET 16–99 keV/μm) within a 6 cm spread-out Bragg peak using either 1, 2 or 6 fractions of carbon ions. Based on the tolerance dose TD50 of carbon ions and photons, the relative biological effectiveness (RBE) was determined and compared with predictions of the local effect model (LEM I and IV). Within a longitudinal magnetic resonance imaging (MRI)-based study the temporal development of radiation-induced changes in the spinal cord was characterized. To test the protective potential of the ACE (angiotensin converting enzyme)-inhibitor ramipril™, an additional dose–response experiment was performed. Results The RBE-values increased with LET and the increase was found to be larger for smaller fractional doses. Benchmarking the RBE-values as predicted by LEM I and LEM IV with the measured data revealed that LEM IV is more accurate in the high-LET, while LEM I is more accurate in the low-LET region. Characterization of the temporal development of radiation-induced changes with MRI demonstrated a shorter latency time for carbon ions, reflected on the histological level by an increased vessel perforation after carbon ion as compared to photon irradiations. For the ACE-inhibitor ramipril™, a mitigative rather than protective effect was found. Conclusions This comprehensive study established a large and consistent RBE data base for late effects in the rat spinal cord after carbon ion irradiation which will be further extended in ongoing studies. Using MRI, an extensive characterization of the temporal development of radiation-induced alterations was obtained. The reduced latency time for carbon ions is expected to originate from a dynamic interaction of various complex pathological processes. A dominant observation after carbon ion irradiation was an increase in vessel perforation preferentially in the white matter. To enable a targeted pharmacological intervention more details of the molecular pathways, responsible for the development of radiation-induced myelopathy are required.
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Hasenclever D, Scholz M, Wehrend A, Schönfelder A. Rentabilitätsberechnung des Kaiserschnitts beim Schaf. Tierarztl Prax Ausg G Grosstiere Nutztiere 2018. [DOI: 10.1055/s-0037-1621527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Zusammenfassung
Gegenstand: In der vorliegenden Studie wird eine Rentabilitätsberechnung zum Kaiserschnitt beim Schaf nach konservativ nicht korrigierbarer Schwergeburt erstellt. Material und Methode: Die Berechnungen stützen sich auf 119 durchgeführte Kaiserschnitte und das anschließende Schicksal der Mutterschafe und entwickelten Lämmer. Ergebnisse: Eine konservativ nicht korrigierbare Schwergeburt stellt für Schafhalter immer ein Verlustgeschäft dar. Werden die Tiere nicht behandelt, sondern euthanasiert, liegt der finanzielle Schaden bei 117,90 荤. Dieses Verlustgeschäft kann bei Tierhaltern mit mehr als 10 Mutterschafen durch eine Sectio caesarea um ca. 20% auf 95,08 荤 minimiert werden, weil diese Tierhalter mit der Mutterschaf-/ Grünlandprämie über eine zusätzliche Einnahmequelle pro Mutterschaf verfügen. Diese Berechung gilt nicht für Hobbyschafhalter mit weniger als 10 Mutterschafen, da hier die Einnahmen durch diese Prämien wegfallen. In diesen Fällen spielt jedoch meist nicht nur der ökonomische Aspekt für oder gegen die Operationsentscheidung eine Rolle. Schlussfolgerung: Die in dieser Studie dargestellten Berechnungen zeigen, dass der finanzielle Rahmen der Schafhaltung eng ist. Trotzdem stellt die Operation die ökonomisch überlegene Strategie gegenüber der Euthanasie dar, wenn Mutterschaf und Lämmer die Operation überleben. Mit 97,8%iger Wahrscheinlichkeit lohnt sich somit die operative Therapie.
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Hammer CM, Petsch C, Klenke J, Skerl K, Wüllner C, Donitzky C, Paulsen F, Scholz M, Seiler T, Kruse FE, Menzel-Severing J. Wound healing in rabbit corneas after flapless refractive lenticule extraction with a 345 nm ultraviolet femtosecond laser. J Cataract Refract Surg 2017; 43:1335-1342. [PMID: 29120718 DOI: 10.1016/j.jcrs.2017.07.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/14/2017] [Accepted: 07/20/2017] [Indexed: 11/30/2022]
Abstract
PURPOSE To characterize corneal wound healing in a rabbit model after flapless refractive lenticule extraction with a 345 nm ultraviolet femtosecond laser. SETTING Departments of Ophthalmology and Anatomy II, University of Erlangen-Nürnberg and Wavelight GmbH, Erlangen, Germany. DESIGN Experimental study. METHODS Flapless refractive lenticule extraction was performed in 1 eye each of 20 New Zealand white rabbits (-5.0 diopters). Groups of 4 animals were euthanized after 48 hours, 1 week, 2 weeks, 4 weeks, and 3 months, respectively. Corneal samples were prepared for histology and fluorescence microscopy. To assess corneal cell death, proliferation, and myofibroblastic transdifferentiation, terminal uridine deoxynucleotidyl nick end-labeling (TUNEL) assay as well as immunostaining for Ki67 and α-smooth muscle actin (αSMA) were performed on sagittal cryosections. RESULTS Histology revealed a zone of keratocyte depletion with a thickness of approximately 50 μm around the extraction site. At 48 hours, pronounced TUNEL staining of keratocytes was detected around the interface (159.9 cells/mm ± 18.4 [SD]), which steadily decreased to 74.9 ± 19.8 cells/mm at 1 week and 5.7 ± 4.8 cells/mm at 2 weeks. Ki67 staining of keratocytes was evident at 48 hours (10.0 ± 3.8 cells/mm), which then decreased at 1 week (5.2 ± 1.7 cells/mm) and 2 weeks (0.4 ± 0.5 cells/mm). From 4 weeks onward, no TUNEL or Ki67 staining was detected. The corneal stroma was αSMA-negative at all timepoints. CONCLUSION Application of the 345 nm laser showed no signs of problematic repair processes in the cornea, which supports the initiation of the clinical phase.
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Holch JW, Ricard I, Stintzing S, Fischer von Weikersthal L, Decker T, Kiani A, Vehling-Kaiser U, Al-Batran SE, Heintges T, Lerchenmüller C, Kahl C, Kullmann F, Scheithauer W, Scholz M, Müller S, Link H, Rost A, Höffkes HG, Moehler M, Lindig RU, Miller-Phillips L, Kirchner T, Jung A, von Einem JC, Modest DP, Heinemann V. Relevance of liver-limited disease in metastatic colorectal cancer: Subgroup findings of the FIRE-3/AIO KRK0306 trial. Int J Cancer 2017; 142:1047-1055. [PMID: 29047142 DOI: 10.1002/ijc.31114] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/08/2017] [Accepted: 09/22/2017] [Indexed: 02/06/2023]
Abstract
In metastatic colorectal cancer (mCRC), liver-limited disease (LLD) is associated with a higher chance of metastectomy leading to long-term survival. However, limited data describes the prognostic and predictive relevance of initially unresectable LLD with regard to targeted first-line therapy. The present analysis investigated the relevance of initially unresectable LLD in mCRC patients treated with targeted therapy against either the epidermal growth factor receptor (EGFR) or vascular epithelial growth factor (VEGF). The analysis was performed based on FIRE-3, a randomized phase III trial comparing first-line chemotherapy with FOLFIRI plus either cetuximab (anti-EGFR) or bevacizumab (anti-VEGF) in RAS wild-type (WT) mCRC. Of 400 patients, 133 (33.3%) had LLD and 267 (66.8%) had non-LLD. Median overall survival (OS) was significantly longer in LLD compared to non-LLD patients (36.0 vs. 25.4 months; hazard ratio [HR] = 0.66; 95% confidence interval [CI]: 0.51-0.87; p = 0.002). In a multivariate analysis also including secondary hepatic resection as time-dependent variable, LLD status was independently prognostic for OS (HR = 0.67; 95% CI: 0.50-0.91; p = 0.01). As assessed by interaction tests, treatment benefit from FOLFIRI plus cetuximab compared to FOLFIRI plus bevacizumab was independent of LLD status with regard to objective response rate (ORR), early tumour shrinkage ≥20% (ETS), depth of response (DpR) and OS (all p > 0.05). In conclusion, LLD could be identified as a prognostic factor in RAS-WT mCRC, which was independent of hepatic resection in patients treated with targeted therapy. LLD had no predictive relevance since benefit from FOLFIRI plus cetuximab over bevacizumab was independent of LLD status.
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Nitz U, Gluz O, Huober J, Kreipe HH, Kates RE, Hartmann A, Erber R, Moustafa Z, Scholz M, Lisboa B, Mohrmann S, Möbus V, Augustin D, Hoffmann G, Weiss E, Böhmer S, Kreienberg R, Du Bois A, Sattler D, Thomssen C, Kiechle M, Jänicke F, Wallwiener D, Harbeck N, Kuhn W. Final analysis of the prospective WSG-AGO EC-Doc versus FEC phase III trial in intermediate-risk (pN1) early breast cancer: efficacy and predictive value of Ki67 expression. Ann Oncol 2017; 28:2899. [PMID: 27634692 DOI: 10.1093/annonc/mdw349] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023] Open
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Buch T, Scifoni E, Krämer M, Durante M, Scholz M, Friedrich T. Modeling Radiation Effects of Ultrasoft X Rays on the Basis of Amorphous Track Structure. Radiat Res 2017; 189:32-43. [PMID: 29073360 DOI: 10.1667/rr14653.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
There is experimental evidence that ultrasoft X rays (0.1-5 keV) show a higher biological effectiveness than high-energy photons. Similar to high-LET radiation, this is attributed to a rather localized dose distribution associated with a considerably smaller range of secondary electrons, which results in an increasing yield of double-strand breaks (DSBs) and potentially more complex lesions. We previously reported on the application of the Giant LOop Binary LEsion (GLOBLE) model to ultrasoft X rays, in which experimental values of the relative biological effectiveness (RBE) for DSB induction were used to show that this increasing DSB yield was sufficient to explain the enhanced effectiveness in the cell inactivation potential of ultrasoft X rays. Complementary to GLOBLE, we report here on a modeling approach to predict the increased DSB yield of ultrasoft X rays on the basis of amorphous track structure formed by secondary electrons, which was derived from Monte Carlo track structure simulations. This procedure is associated with increased production of single-strand break (SSB) clusters, which are caused by the highly localized energy deposition pattern induced by low-energy photons. From this, the RBE of ultrasoft X rays can be determined and compared to experimental data, showing that the inhomogeneity of the energy deposition pattern represents the key variable to describe the increased biological effectiveness of ultrasoft X rays. Thus, this work demonstrates an extended applicability of the amorphous track structure concept and tests its limits with respect to its predictive power. The employed model mechanism offers a possible explanation for how the cellular response to ultrasoft X rays is directly linked to the energy deposition properties on the nanometric scale.
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Jooß A, Haberbosch L, Köhn A, Kozarzewski L, Rönnefarth M, Fleischmann R, Scholz M, Schmidt S, Brandt S. P 63 Investigating the effects of tRNS variants and task dependency on cortical excitability. Clin Neurophysiol 2017. [DOI: 10.1016/j.clinph.2017.06.139] [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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Zeynalova S, Scholz M, Tautenhahn S, Wirkner K, Hagendorff A, Loeffler M. Sensitivität von NT-proBNP hinsichtlich Ausschluss einer Herzinsuffizienz. DAS GESUNDHEITSWESEN 2017. [DOI: 10.1055/s-0037-1605986] [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]
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93
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Kühnapfel A, Scholz M. Körperoberflächenmessung mittels lasergestützter 3D-Anthropometrie: Reliabilität, Validität und Verbesserung empirischer Oberflächenformeln. DAS GESUNDHEITSWESEN 2017. [DOI: 10.1055/s-0037-1605798] [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]
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94
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Kühnapfel A, Scholz M. Reliabilität lasergestützter 3D-Körpervermessung und Vergleich mit klassischer Anthropometrie. DAS GESUNDHEITSWESEN 2017. [DOI: 10.1055/s-0037-1605797] [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]
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95
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Zeynalova S, Teren A, Henger S, Burkhardt R, Thiery J, Scholz M. Ergänzung des ARRIBA-Scores zur besseren Prädiktion der Mortalität (LIFE-Heart Studie). DAS GESUNDHEITSWESEN 2017. [DOI: 10.1055/s-0037-1605987] [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]
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Courdi A, Bensadoun RJ, Scholz M. Radiosensibilité in vitro des cellules tumorales humaines aux particules lourdes chargées. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1993901001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Moxham BJ, Emmanouil-Nikoloussi E, Brenner E, Plaisant O, Brichova H, Kucera T, Pais D, Stabile I, Borg J, Scholz M, Paulsen F, Luis Bueno-López J, Alfonso Arraez Aybar L, De Caro R, Arsic S, Lignier B, Chirculescu A. The attitudes of medical students in Europe toward the clinical importance of histology. Clin Anat 2017; 30:635-643. [DOI: 10.1002/ca.22889] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 04/20/2017] [Indexed: 11/07/2022]
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Saager M, Peschke P, Brons S, Scholz M, Huber P, Debus J, Karger C. OC-0517: Investigation of the RBE variation of protons in the rat spinal cord within a spread-out Bragg peak. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30957-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schreiber L, Rapp M, Sabel M, Onken J, Misch M, Kinzel A, Thomé C, Scholz M, Vajkoczy P, Freyschlag CF. P09.07 The use of programmable shunts in patients treated with Tumor Treating Fields: Multicentric Case Series. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.265] [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] Open
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Zhong Y, Ostach D, Scholz M, Epp SW, Techert S, Schlichting I, Ullrich J, Krasniqi FS. Hot carrier relaxation in CdTe via phonon-plasmon modes. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:095701. [PMID: 27991427 DOI: 10.1088/1361-648x/aa5478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Carrier and lattice dynamics of laser excited CdTe was studied by time-resolved reflectivity for excitation fluences spanning about three orders of magnitude, from 0.064 to 6.14 mJ cm-2. At fluences below 1 mJ cm-2 the transient reflectivity is dominated by the dynamics of hybrid phonon-plasmon modes. At fluences above 1 mJ cm-2 the time-dependent reflectivity curves show a complex interplay between band-gap renormalization, band filling, carrier dynamics and recombination. A framework that accounts for such complex dynamics is presented and used to model the time-dependent reflectivity data. This model suggests that the excess energy of the laser-excited hot carriers is reduced much more efficiently by emitting hybrid phonon-plasmon modes rather than bare longitudinal optical phonons.
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