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Anomalies in the short-range local environment and atomic diffusion in single crystalline equiatomic CrMnFeCoNi highentropy alloy

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Nano Research 2024年第6期17卷 5336-5348页

作者： Alevtina Smekhova daniel Gaertner Alexei Kuzmin Ana Guilherme Buzanich Goetz Schuck Ivo Zizak gerhard Wilde Kirill V.Yusenko Sergiy Divinski Helmholtz-Zentrum Berlin für Materialien und Energie(HZB) D-12489 BerlinGermany Institute of Materials Physics University of MünsterD-48149 MünsterGermany Institute of Solid State Physics University of LatviaLV-1063 RigaLatvia Bundesanstalt für Materialforschung und–prüfung(BAM) D-12489 BerlinGermany

Multi-edge extended X-ray absorption fine structure(EXAFS)spectroscopy combined with reverse Monte Carlo(RMC)simulations was used to probe the details of element-specific local coordinations and component-dependent structure relaxations in single crystalline equiatomic CrMnFeCoNi high-entropy alloy as a function of the annealing *** representative states,namely a high-temperature state,created by annealing at 1373 K,and a low-temperature state,produced by long-term annealing at 993 K,were compared in *** features identified in atomic configurations of particular principal components indicate variations in the local environment distortions connected to different degrees of compositional disorder at the chosen representative *** detected changes provide new atomistic insights and correlate with the existence of kinks previously observed in the Arrhenius dependencies of component diffusion rates in the CrMnFeCoNi high-entropy alloy.

关键词： high-entropy alloys diffusion short-range order extended X-ray absorption fine structure(EXAFS) reverse Monte Carlo

Pneumothorax in a Thiel cadaver model of cardiopulmonary resuscitation

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World Journal of Emergency Medicine 2023年第2期14卷 143-147页

作者： daniel Auinger Simon Orlob Johannes Wittig Gabriel Honnef Stefan Heschl Georg Feigl gerhard Prause Division of Anaesthesiology and Intensive Care Medicine 1 Department of Anaesthesiology and Intensive Care MedicineMedical University of GrazGraz 8036Austria Division of Anaesthesiology and Intensive Care Medicine 2 Department of Anaesthesiology and Intensive Care MedicineMedical University of GrazGraz 8036Austria Medical University of Graz Graz 8036Austria Research Center for Emergency Medicine Aarhus University HospitalAarhus 8200Denmark Department of Medicine Randers Regional HospitalRanders 8930Denmark Chair of Macroscopic and Clinical Anatomy Gottfried Schatz Research CenterMedical University of GrazGraz 8036Austria Institute of Morphology and Clinical Anatomy Faculty of Health/School of MedicineWitten/Herdecke UniversityWitten 58448Germany

INTRODUCTION There has been some previous research in the field of cardiopulmonary resuscitation (CPR) using cadaver models.[1]The Thiel method was developed by Professor Walter Thiel (Graz, Austria) and described in 1992 and 2002. It consists of both an intravascular injection of the embalming solution and submersion of the bodies in a tank with the same solution for a determined period.[2,3]

关键词： Walter cardiopulmonary bal

Polymeric biomaterials for biophotonic applications

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Bioactive Materials 2018年第4期3卷 434-445页

作者： Dingying Shan Ethan gerhard Chenji Zhang John William Tierney daniel Xie Zhiwen Liu Jian Yang Department of Biomedical Engineering Materials Research InstituteThe Huck Institutes of the Life SciencesThe Pennsylvania State UniversityUniversity ParkPA16802USA Department of Electrical Engineering Materials Research InstituteThe Pennsylvania State UniversityUniversity ParkPA16802USA Department of Biomedical Engineering College of Engineering and ComputingUniversity of South CarolinaColumbiaSC29201USA Assumption College School WinsorONCanada

With the growing importance of optical techniques in medical diagnosis and treatment,there exists a pressing need to develop and optimize materials platform for biophotonic ***,the design of biocompatible and biodegradable materials with desired optical,mechanical,chemical,and biological properties is required to enable clinically relevant biophotonic devices for translating in vitro optical techniques into in situ and in vivo *** technological trend propels the development of natural and synthetic polymeric biomaterials to replace traditional brittle,nondegradable silica glass based optical *** this review,we present an overview of the advances in polymeric optical material development,optical device design and fabrication techniques,and the accompanying applications to imaging,sensing and phototherapy.

关键词： Biophotonics Biomaterials Imaging Sensing Phototherapy

Circulating cytokeratin-positive cells and tumor budding in colorectal cancer

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World Journal of Clinical Oncology 2016年第6期7卷 433-440页

作者： Bruno M?rkl Narjes Wilhelms Matthias Anthuber gerhard Schenkirsch Günter Schlimok daniel Oruzio Institute of Pathology Klinikum Augsburg Department of Visceral Surgery Klinikum Augsburg Clinical and Population-Based Cancer Registry Augsburg Hematology and Oncology Diakonissen-krankenhaus Augsburg Onkologische Praxis MVZ

AIM To investigate whether circulating cytokeratin-positive(CK^+) cells in the mesenteric blood of resected colorectal specimens are prognostic and correlate with tumor *** Fifty-six colorectal specimens were collected between 9/2007 and 7/*** from the mesenteric vein was drawn immediately after receiving the fresh and unfixed specimens in the pathology *** separation of the mononuclear cells by Ficoll-Hypaquedensity-gradient centrifugation,cytological smears were immunocytochemically stained for *** budding was evaluated on slides stained for *** identification of ≥ 30 buds/1.3 mm2 was defined as high grade *** CK^+ cells and clusters were identified in 29(48%) and 14(25%) of the samples,*** cells were identified in one of three non-malignant *** were found exclusively in malignant *** occurrence of CK^+ cells or clusters was not associated with any of the evaluated clinicopathological factors,including surgical technique and tumor ***,the occurrence of CK^+ cells or clusters had no influence on the cancerspecific survival [75 mo(CI:61;88) vs 83 mo(CI:72;95) and 80 mo(CI:63;98) vs 79 mo(CI:69;89),respectively].CONCLUSION CK^+ cells and showed neither prognostic significance nor an association with tumor *** is very likely that CK18-staining is not specific enough to identify the relevant cells.

关键词： Colorectal cancer Circulating cells Tumor budding Peripheral blood Survival

Condensation of pyrylium salts with mixed anhydrides:aryl ethers,aryl amines and sterically congested aromatics

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Organic Chemistry Frontiers 2022年第2期9卷 294-298页

作者： daniel Grabowski Susanne Alef Steven Becker Ute Muller Gregor Schnakenburg Sigurd Hoger aKekulé-Institut für Organische Chemie und Biochemie Rheinische Friedrich-Wilhelms-Universität BonnGerhard-Domagk-Str.153121 BonnGermany bInstitut für Anorganische Chemie Universität BonnGerhard-Domagk-Str.153121 BonnGermany

The condensation of easily accessible and widely functionalizable 2,4,6-triaryl pyrylium salts with mixed anhydrides,formed in situ fromα-functionalized sodium acetates and an anhydride solvent,leads in good yields to the corresponding 2,4,6-triaryl benzenes functionalized at their 1-position.4-(Trifluoromethyl)benzoic anhydride has been proven as being the solvent of choice and ortho-disubstituted diphenyl ethers,triphenyl amines and phenyl carbazoles with different functionalizations are *** addition,sterically hindered anthracene diacetate is condensed with two bis-bromophenyl pyrylium salts which leads after intramolecular Yamamoto coupling to *** these,the anthracene core is surrounded by phenylenes and protected from photooxidation,leading to a highly stable blue emitting material.

关键词： material. anhydride salts

Biliary phosphatidylcholine and lysophosphatidylcholine profiles in sclerosing cholangitis

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World Journal of Gastroenterology 2013年第33期19卷 5454-5463页

作者： Annika Gauss Robert Ehehalt Wolf-Dieter Lehmann gerhard Erben Karl-Heinz Weiss Yvonne Schaefer Petra Kloeters-Plachky Adolf Stiehl Wolfgang Stremmel Peter Sauer daniel Nils Gotthardt Gastroenterology and Hepatology Unit Department of Internal MedicineUniversity Hospital Heidelberg Department of Spectroscopy German Cancer Research Center

AIM:To analyze phospholipid profiles in intrahepatic bile from patients with primary sclerosing cholangitis(PSC)and secondary sclerosing cholangitis(SSC).METHODS:Intrahepatic bile specimens collected via endoscopic retrograde cholangiography from 41 patients were *** of these patients were diagnosed with PSC,10 with SSC,11 with choledocholithiasis or no identifiable biliary disease,and 6 with cholangiocellular carcinoma(CCC).Bile acid,cholesterol,protein,and bilirubin contents as well as pancreas lipase activity in bile were determined by biochemical ***(PC)and lysophosphatidylcholine(LPC)species were quantified using nanoelectrospray ionization tandem mass ***:Bile from all the examined patient groups showed a remarkably similar PC and LPC species composition,with only minor statistical *** biliary PC concentrations were highest in controls(8030±1843 mol/L)and lowest in patients with CCC(1969±981 mol/L)(P=0.005,controls vs SSC and CCC,respectively,P<0.05).LPC contents in bile were overall low(4.2%±1.8%).Biliary LPC/PC ratios and ratios of biliary PC to bilirubin,PC to cholesterol,PC to protein,and PC to bile acids showed no intergroup ***:PC and LPC profiles being similar in patients with or without sclerosing cholangitis,these phospholipids are likely not of major pathogenetic importance in this disease group.

关键词： Primary sclerosing cholangitis Secondary sclerosing cholangitis Cholangiocellular carcinoma Phosphatidylcholine Lysophosphatidylcholine Bile Mass spectrometry