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Tunable colors and conductivity by electroless growth of Cu/Cu2O particles on sol-gel modified cellulose

Nano Research 2020年第10期13卷 2658-2664页

作者： Justus Landsiedel Waleri Root christian schramm Alexander Menzel Steffen Witzleben Thomas Bechtold Tung Pham Research Institute for Textile Chemistry and Textile Physics University of Innsbruck6850 DornbirnAustria Department of Physical Chemistry University of Innsbruck6020 InmsbruckAustria Department of Natural Sciences Bonn Rhein sSieg University of Applied Sciences5359 RheinbachGermany

Development of colored surfaces by formation of nano-structured aggregates is a widely used strategy in nature to color lightweight structures (e.g. butterflies) without the use of dye pigments. The deposition of nanoscale particles mimics nature in it’s approach coloring surfaces. This work presents sol-gel modification of cellulose surfaces used to form a template for growth of Cu/Cu2O core–shell particles with defined size-distributions. Besides improving the adhesion of the deposited particulate material, the sol-gel matrix serves as a template for the control of particle sizes of the Cu/Cu2O structures, and as a consequence of particle size variation the surface color is tunable. As an example, red color was achieved with an average particle size of 35 nm, and shifts gradually to blue appearance when particles have grown to 80 nm on the sol-gel modified fabric. The copper concentration on representative fabrics is kept low to avoid modifying the textile characteristics and were all in the range of 150–170 mg per g of cellulose material. As a result of copper deposition on the surface of the material, the cellulose fabric also became electrically conductive. Remarkably, the electrical conductivity was found to be dependent on the average particle sizes of the deposits and thus related to the change in observed color. The generation of color by growth of nano-sized particles on sol-gel templates provides a highly promising approach to stain surfaces by physical effects without use of synthetic colorants, which opens a new strategy to improve environmental profile of coloration.

关键词： electroless copper deposition sol-gel support thin film structural coloration tunable sheet resistance LSPR

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Millijoule ultrafast optical parametric amplification as replacement for high-gain regenerative amplifiers

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High Power Laser Science and Engineering 2023年第4期11卷 33-44页

作者： Yannik Zobus christian Brabetz Johannes Hornung Jonas BOhland Dirk Reemts Ji-Ping Zou Markus Loeser Daniel Albach Ulrich schramm Vincent Bagnoud Technische Universität Darmstadt DarmstadtGermany GSI Helmholtzzentrum für Schwerionenforschung GmbH DarmstadtGermany Laboratoire pour l’Utilisation des Lasers Intenses CNRSEcole PolytechniquePalaiseauFrance Helmholtz-Zentrum Dresden-Rossendorf DresdenGermany Technische Universität Dresden DresdenGermany Helmholtz-Institut Jena JenaGermany

We report on the development of an ultrafast optical parametric amplifier front-end for the Petawatt High Energy Laser for heavy Ion eXperiments(PHELIX)and the Petawatt ENergy-Efficient Laser for Optical Plasma Experiments(PEnELOPE)*** front-end delivers broadband and stable amplification up to 1 mJ per pulse while maintaining a high beam *** implementation at PHELIX allowed one to bypass the front-end amplifier,which is known to be a source of *** the bypass,an amplified spontaneous emission contrast of 4.9×10^(−13)and a pre-pulse contrast of 6.2×10^(−11)could be *** to its high stability,high beam quality and its versatile pump amplifier,the system offers an alternative for high-gain regenerative amplifiers in the front-end of various laser systems.

关键词： high-intensity laser temporal laser contrast ultrafast optical parametric amplification

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Clinical and echocardiographic analysis of patients suffering from recurrent takotsubo cardiomyopathy

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Journal of Geriatric Cardiology 2016年第11期13卷 888-893页

作者： Ibrahim El-Battrawy Uzair Ansari Michael Behnes Dennis Hillenbrand Katja schramm Darius Haghi Ursula Hoffmann Theano Papavassiliu Elif Elmas christian Fasmer Tobias Becher Stefan Baumann Christina Dosch Felix Heggemann Jurgen Kuschyk Martin Borggrefe Ibrahim Akin First Department of Medicine Faculty of Medicine University Medical Centre Mannheim (UMM) University of Heidelberg Mannheim Germany DZHK (German Center for Cardiovascular Research) Partner Site Heidelberg-Mannheim Mannheim Germany

Background Recurrence of takotsubo cardiomyopathy （TTC） is a well-known complication. However, current literature lists only a few isolated cases. We aimed to determine the incidence and clinical significance of recurrent TTC. Methods ＆ Results Our institutional database constituted a collective of 114 patients diagnosed with TTC since 2003. Close follow-up of these patients revealed a recurrence of TTC in seven of these （6.1%）. The time interval between the index event and its recurrence varied between six months and six years. Arterial hypertension was more revealed in the recurrence group of TTC compared to non-recurrence group, （P = 0.02）. Chronic obstructive pulmo- nary disease and/or asthma was more diagnosed in the recurrence group, （P = 0.04）. Clinical events like fight ventficular involvement, TTC related complications such as life-threatening arrhythmias, pulmonary congestion and in hospital death were observed more frequently in the recurrent episode. Over a mean follow-up of one year the mortality rate was similar in both groups. Conclusions Recurrence of TTC within six years after index event is not an uncommon phenomenon. In the event of right ventricular involvement in the relapse phase, it might be associated with a higher complication rate. TTC recurrence should be the first differential diagnosis in patients with a past history of TTC.

关键词： Biventricular takotsubo cardiomyopathy Recurrent takotsubo cardiomyopathy Takotsubo cardiomyopathy related complication

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Evaluation of Ultrasound-based Surveillance for Hepatocellular Carcinoma in Patients at Risk:Results From a German Multicenter Retrospective Cohort Study

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Journal of Clinical and Translational Hepatology 2023年第3期11卷 626-637页

作者： Johannes Gillessen Philipp Reuken Peter-Marton Hunyady Matthias christian Reichert Lucian Lothschütz Fabian Finkelmeier Matthias Nowka Gabriel Allo Fabian Kütting Martin Bürger Dirk Nierhoff Hans-Michael Steffen Christoph schramm University Hospital Cologne Department of Gastroenterology and HepatologyCologneGermany University Hospital Jena Department of Internal Medicine IV-GastroenterologyHepatologyInfectious DiseaseJenaGermany University Hospital Frankfurt Department of Internal Medicine 1-Gastroenterology und HepatologyPulmonology und AllergologyEndocrinologyFrankfurtGermany Department of Medicine II Saarland University Medical CenterHomburgGermany Department of Gastroenterology and Hepatology University Hospital of EssenEssenGermany

Background and Aims:Hepatocellular carcinoma(HCC)surveillance in patients at risk is strongly recommended and usually performed by ultrasound(US)semiannually with or without alfa-fetoprotein(AFP)*** pa-rameters except for surveillance intervals have not been strictly *** aimed to evaluate surveillance success and risk factors for surveillance ***:Patients with≥1 US prior to HCC diagnosis performed at four tertiary referral hospitals in Germany between 2008 and 2019 were retrospectively *** success was defined as HCC detection within Milan ***:Only 47%of 156 patients,median age 63(interquartile range:57-70)years,56%male,and 96%with cirrhosis,received recom-mended surveillance modality and *** fail-ure occurred in 29%and was significantly associated with lower median model for end-stage liver disease(MELD)score odds ratio(OR)1.154,95%confidence interval(CI):1.027-1.297,p=0.025)and HCC localization within right liver lobe(OR:6.083,95%CI:1.303-28.407,p=0.022),but not with AFP≥200μg/*** with surveillance failure had sig-nificantly more intermediate/advanced tumor stages(93%vs.6%,p<0.001),fewer curative treatment options(15%vs.75%,p<0.001)and lower survival at 1 year(54%vs.75%,p=0.041),2 years(32%vs.57%,p=0.019)and 5 years(0%vs.16%,p=0.009).Alcoholic and non-alcoholic fatty liver disease(OR:6.1,95%CI:1.7-21.3,p=0.005)and ascites(OR:3.9,95%CI:1.2-12.6,p=0.021)were in-dependently associated with severe visual limitations on ***:US-based HCC surveillance in patients at risk frequently fails and its failure is associated with unfavorable patient-related *** MELD score and HCC lo-calization within right liver lobe were significantly associated with surveillance failure.

关键词： Hepatocellular carcinoma Surveillance success Screening Ultra-sound.

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Cell:新分子或可有效清除肝脏和血液中的脂肪

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现代生物医学进展 2017年第4期17卷 I0004-I0004页

作者： Brian Finan Christoffer Clemmensen Zhimeng Zhu Kerstin Stemmer Karine Gauthier Luisa M uuml ller Meri De Angelis Kristin Moreth Frauke Neff Diego Perez-Tilve Katrin Fischer Dominik Lutter Miguel A. S aacute nchez-Garrido Peng Liu Jan Tuckermann Mohsen Malehmir Marc E. Healy Achim Weber Mathias Heikenwalder Martin Jastroch Maximilian Kleinert Sigrid Jall Sara Brandt Fr eacute d eacute ric Flamant Karl-Werner schramm Heike Biebermann Yvonne D ouml ring christian Weber Kirk M. Habegger Michaela Keuper Vasily Gelfanov Fa Liu Josef K ouml hrle Jan Rozman Helmut Fuchs Valerie Gailus-Durner Martin Hrabě de Angelis Susanna M. Hofmann Bin Yang Matthias H. Tsch ouml p Richard DiMarchi Timo D. M uuml ller Institute for Diabetes and Obesity Helmholtz Diabetes Center at Helmholtz Zentrum München German Research Center for Environmental Health (GmbH) 85764 Neuherberg Germany Department of Chemistry Indiana University Bloomington IN 47405 USA Institut de Génomique Fonctionnelle de Lyon Université de Lyon Centre National de la Recherche Scientifique (CNRS) Institut National de la Recherche Agronomique (INRA) École Normale Supérieure de Lyon 69364 Lyon France Molecular EXposomics Helmholtz Zentrum München German Research Center for Environmental Health (GmbH) 85764 Neuherberg Germany German Mouse Clinic Institute of Experimental Genetics Helmholtz Zentrum München German Research Center for Environmental Health 85764 Neuherberg Germany Division of Endocrinology Department of Internal Medicine Metabolic Diseases Institute University of Cincinnati College of Medicine Cincinnati OH 45237 USA Institute of Comparative Molecular Endocrinology University of Ulm 89081 Ulm Germany Department of Pathology and Molecular Pathology University Zurich and University Hospital Zurich 8091 Zurich Switzerland Institute of Virology Technische Universität München 81675 Munich Germany Institute of Experimental Pediatric Endocrinology Charité-Universitätsmedizin Berlin Berlin 13353 Germany Department of Medicine Institute for Cardiovascular Prevention Ludwig-Maximilians-Universität München 80336 Munich Germany Comprehensive Diabetes Center and Department of Medicine-Endocrinology Diabetes & Metabolism University of Alabama at Birmingham Birmingham AL 35294 USA Institute for Diabetes and Regeneration Helmholtz Diabetes Center at Helmholtz Zentrum München German Research Center for Environmental Health (GmbH) Neuherberg 85764 Germany Calibrium LLC Carmel IN 46032 USA Institute for Experimental Endocrinology Charité-Universitätsmedizin Berlin Berlin 13353 Germany German Center for Diabetes Research (DZD) 85764 Neuherberg Germany

肥胖和糖尿病持续上升代表着我们的社会所面临的一个重大的负担。脂肪肝和动脉粥样硬化是这些代谢疾病常见的后果，但是开发一种高效且又安全的能够逆转肥胖、胰岛素抵抗性、脂肪肝和动脉粥样硬化的药物仍然是全球头等的一项重大的科学... 详细信息

肥胖和糖尿病持续上升代表着我们的社会所面临的一个重大的负担。脂肪肝和动脉粥样硬化是这些代谢疾病常见的后果，但是开发一种高效且又安全的能够逆转肥胖、胰岛素抵抗性、脂肪肝和动脉粥样硬化的药物仍然是全球头等的一项重大的科学挑战。

关键词：脂肪肝 Cell 动脉粥样硬化血液肝脏清除分子代谢疾病

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