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Circularly polarized phosphorescence and photon transport of micro/nanocrystals of ruthenium and iridium complexes with chiral anions

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中国科学:化学英文版 2023年第10期66卷 2892-2902页

作者： Zhong-Qiu Li Zhong-Liang Gong Tongling Liang stefan bernhard Yu-Wu Zhong Jiannian Yao Beijing National Laboratory for Molecular Sciences(BNLMS) CAS Key Laboratory of PhotochemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Chemistry Carnegie Mellon UniversityPittsburghPennsylvania 15213USA

Materials with efficient circularly polarized phosphorescences(CPPs) are of potential use in advanced data encryption and anticounterfeiting, bioimaging, optoelectronic devices and so forth. Herein, a simple method is presented for the preparations of CPP-active micro/nanocrystals with large luminescence dissymmetry factors(glum), high phosphorescence quantum efficiencies(Φ_(P)) and tunable emission colors. Diastereomeric Ir^(Ⅲ) and Ru^(Ⅱ) complexes with chiral(±)-camphorsulfonate counter-anions are readily synthesized and assembled into crystalline microrods, microplates or nanofibers with ordered morphologies. The chirality information of chiral counter-anions is efficiently transferred to the metal components to afford CPPs with cyan, green,yellow, or red emission colors and Φ_(P)in the range of 5%–85%. The number of chiral anions is found to play a role in influencing the CPP magnitudes of these crystals. The dicationic Ru^(Ⅱ) and tricationic Ir^(Ⅲ) complexes show glumvalues in the 10^(-2)order, which are much larger with respect to those of monocationic Ir^(Ⅲ) complexes. Single crystal X-ray analysis is performed to obtain information on the chirality transfer of these materials. In addition, circularly polarized photonic signal waveguiding is demonstrated using the microcrystals of an Ir^(Ⅲ)complex. This work demonstrates an appealing strategy of constructing chiral micro/nano-architectures for potential applications in chiral nanophotonics.

关键词： circularly polarized luminescence transition metal complexes chirality transfer micro/nanocrystals photon transport

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Utilizing neural networks to supplant chemical kinetics tabulation through mass conservation and weighting of species depletion

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Energy and AI 2024年第2期16卷 101-110页

作者： Franz M.Rohrhofer stefan Posch Clemens Gößnitzer JoséM.García-Oliver bernhard C.Geiger Know-Center GmbH Sandgasse 36Graz8010StyriaAustria LEC GmbH Inffeldgasse 19Graz8010StyriaAustria Universitat Politècnica de València Camíde VeraValència46022ValènciaSpain

Artificial Neural Networks(ANNs)have emerged as a powerful tool in combustion simulations to replace memory-intensive tabulation of integrated chemical *** reaction mechanisms,however,present a challenge for standard ANN approaches as modeling multiple species typically suffers from inaccurate predictions on minor *** paper presents a novel ANN approach which can be applied on complex reaction mechanisms in tabular data form,and only involves training a single ANN for a complete reaction *** approach incorporates a network architecture that automatically conserves mass and employs a particular loss weighting based on species *** modifications are used to improve the overall ANN performance and individual prediction accuracies,especially for minor species mass *** validate its effectiveness,the approach is compared to standard ANNs in terms of performance and ANN *** distinct reaction mechanisms(H_(2),C_(7)H_(16),C_(12)H_(26),OME_(34))are used as a test cases,and results demonstrate that considerable improvements can be achieved by applying both modifications.

关键词： Neural network approach Chemical kinetics Flamelet tabulation Mass conservation Species loss weighting

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2008年全球经济展望

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海外经济评论 2008年第11期 15-20页

作者： stefan Bergheim bernhard Graf Maria-Laura Lanzeni stefan Schneider

经过4年的强劲增长之后，全球经济面临着严峻挑战：美国次贷危机导致的金融动荡、多国住宅市场的调整、创纪录油价和食品价格导致的全球通胀率高涨，以及美元贬值对美国以外国家的影响。

关键词：经济展望金融动荡全球经济住宅市场食品价格美元贬值通胀率美国

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Demonstrating grating-based phase-contrast imaging of laser-driven shock waves

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Matter and Radiation at Extremes 2024年第4期9卷 90-97页

作者： Leonard Wegert Stephan Schreiner Constantin Rauch Bruno Albertazzi Paulina Bleuel Eric Frojdh Michel Koenig Veronika Ludwig Artem SMartynenko Pascal Meyer Aldo Mozzanica Michael Müller Paul Neumayer Markus Schneider Angelos Triantafyllidis bernhard Zielbauer Gisela Anton Thilo Michel stefan Funk Plasma Physics Department GSI Helmholtzzentrum fur SchwerionenforschungPlanckstraBe 164291 DarmstadtGermany Erlangen Centre for Astroparticle Physics(ECAP) Friedrich-Alexander-Universität Erlangen-NurnbergNikolaus-Fiebiger-StraBe 291058 ErlangenGermany LULI-CNRS CEASorbonne UniversitésEcole PolytechniqueInstitut Polytechnique de ParisF-91120 Palaiseau CedexFrance Paul Scherrer Institut(Psi) Forschungsstrasse 1115232VilligenSwitzerland Karlsruhe Institute of Technology Institute of Microstructure TechnologyHermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany

Single-shot X-ray phase-contrast imaging is used to take high-resolution images of laser-driven strong shock *** a two-grating Talbot interferometer,we successfully acquire standard absorption,differential phase-contrast,and dark-field images of the shocked *** agreement is demonstrated between experimental data and the results of two-dimensional radiation hydrodynamics simulations of the laser-plasma *** main sources of image noise are identified through a thorough assessment of the interferometer’s *** acquired images demonstrate that grating-based phase-contrast imaging is a powerful diagnostic tool for high-energy-density *** addition,we make a novel attempt at using the dark-field image as a signal modality of Talbot interferometry to identify the microstructure of a foam target.

关键词： interaction shock phase

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Stress Knowledge Map:A knowledge graph resource for systems biology analysis of plant stress responses

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Plant Communications 2024年第6期5卷 17-31页

作者： Carissa Bleker Ziva Ramsak Andras Bittner Vid Podpecan Maja Zagorscak bernhard Wurzinger Spela Baebler Marko Petek Maja Kriznik Annelotte van Dieren Juliane Gruber Leila Afjehi-Sadat Wolfram Weckwerth Anze Zupanic Markus Teige Ute CVothknecht Kristina Gruden Department of Biotechnology and Systems Biology National Institute of BiologyVecna pot 1211000 LjubljanaSlovenia Plant Cell Biology Institute of Cellular and Molecular BotanyUniversity of BonnKirschallee 153115 BonnGermany Department of Knowledge Technologies Jozef Stefan InstituteJamova cesta 391000 LjubljanaSlovenia Department of Functional&Evolutionary Ecology University of ViennaDjerassiplatz 11030 ViennaAustria Mass Spectrometry Unit Core Facility Shared ServicesUniversity of ViennaDjerassiplatz 11030 ViennaAustria

Stress Knowledge Map(SKM;https://***)is a publicly available resource containing two complementary knowledge graphs that describe the current knowledge of biochemical,signaling,and regulatory molecular interactions in plants:a highly curated model of plant stress signaling(PSS;543 reactions)and a large comprehensive knowledge network(488390 interactions).Both were constructed by domain experts through systematic curation of diverse literature and database *** provides a single entry point for investigations of plant stress response and related growth trade-offs,as well as interactive explorations of current *** is also formulated as a qualitative and quantitative model for systems biology and thus represents a starting point for a plant digital ***,we describe the features of SKM and show,through two case studies,how it can be used for complex analyses,including systematic hypothesis generation and design of validation experiments,or to gain new insights into experimental observations in plant biology.

关键词： knowledge graph plant stress responses plant signaling systems biology plant digital twin

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Prematurity and the burden of influenza and respiratory syncytial virus disease

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世界儿科杂志:英文版 2016年第1期12卷 8-18页

作者： bernhard Resch stefan Kurath-Koller Monika Eibisberger Werner Zenz Research Unit for Neonatal Infectious Diseases and Epidemiology Division of NeonatologyDepartment of Pediatrics and Adolescent MedicineMedical University of GrazAustria Research Unit for Neonatal Infectious Diseases and Epidemiology Medical University of GrazAustria Research Unit for Infectious Diseases and Vaccinology Division of General PediatricsDepartment of Pediatrics and Adolescent MedicineMedical University of GrazAustria

Background:Respiratory morbidity of former preterm infants and especially those with bronchopulmonary dysplasia(BPD)is high during infancy and early *** sources:We performed a review based on a literature search including EMBASE,MEDLINE,and CINAHL databases to identify all relevant papers published in the English and German literature on influenza and respiratory syncytial virus infection associated with preterm infant,prematurity,and BPD between 1980 and ***:Recurrent respiratory symptoms remain common at preschool age,school age and even into young *** viral respiratory tract infections due to different pathogens cause significant morbidity and necessitate rehospitalizations during the fi rst years of *** uenza virus infection plays a minor role compared to respiratory syncytial virus(RSV)associated respiratory tract infection during infancy and early ***,particular morbidity to both viruses is ***:The particular burden of both viral diseases in preterm infants is dominated by RSV and its associated rehospitalizations during the fi rst two years of *** measures include vaccination against influenza virus of family members and caregivers and active immunization starting at the age of 6 months,and monthly injections of palivizumab during the cold season to avoid severe RSV disease and its sequelae.

关键词： bronchopulmonary dysplasia infl uenza preterm infant respiratory infectious disease respiratory syncytial virus

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Recurrent abscess after primary successful endo-sponge treatment of anastomotic leakage following rectal surgery

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World Journal of Gastroenterology 2010年第36期16卷 4570-4574页

作者： stefan Riss Anton Stift Caroline Kienbacher bernhard Dauser Ingrid Haunold stefan Kriwanek Wolfgang Radlsboek Michael Bergmann Division of General Surgery Department of SurgeryMedical University of ViennaA-1090 ViennaAustria Department of Surgery Floridsdorf HospitalA-1210 ViennaAustria Department of Surgery Barmherzige Brüder WienA-1020 ViennaAustria Department of Surgery Barmherzige Schwestern WienA-1060 ViennaAustria Department of Surgery Rudolfstiftung HospitalA-1030 ViennaAustria Department of Surgery G-ttlicher Heiland WienA-1170 ViennaAustria

AIM:To assess long-term efficacy of initially successful endo-sponge assisted ***:Between 2006 and 2009,consecutive patients who had undergone primary successful endo-sponge treatment of anastomotic leakage following rectal cancer surgery were enrolled in the *** were recruited from 6 surgical departments in *** and oncologic outcomes were assessed through routine endoscopic and radiologic follow-up ***:Twenty patients(7 female,13 male)were *** indications for endosponge treatment were anastomotic leakage(n=17)and insufficiency of a rectal stump after Hartmann's procedure(n=3).All patients were primarily operated for rectal *** overall mortality rate was 25%.The median followup duration was 17 mo(range 1.5-29.8 mo).Five patients(25%)developed a recurrent *** time between last day of endosponge therapy and occurrence of recurrent abscess was 255 d(range 21-733 d).One of these patients was treated by computed tomography-guided drainage and in 3 patients Hartmann's procedure had to be *** patients(10%)developed a local tumor recurrence and subsequently ***:Despite successful primary outcome,patients who receive endo-sponge therapy should be closely monitored in the first 2 years,since recurrence might occur.

关键词： Rectal surgery Anastomotic leakage Endo-sponge Endo-vacuum treatment

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Traction-assisted endoscopic mucosal resection for polypectomy in the large intestine

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World Journal of Gastroenterology 2010年第43期16卷 5462-5466页

作者： bernhard Dauser Thomas Winkler Behrooz Salehi stefan Riss Franz Beer Friedrich Herbst Department of Surgery St. John of God Hospital Department of Surgery Medical University of Vienna Kerjaschki Laboratory of Pathology

AIM: To evaluate if traction-assisted endoscopic mucosal resection (TA-EMR) is feasible and if it enables en bloc resection of colorectal lesions. METHODS: Seven patients with a total of 12 colorectal adenomas were prospectively enrolled. All lesions were removed by TA-EMR: one hemostatic clip tied to a white silk suture was applied to the base of the lesion to allow traction through the working channel of the colonoscope. A conventional polypectomy snare was mounted over the suture and the lesion was pulled into the snare and resected in one piece. RESULTS: All 12 lesions (nine sessile) were resected en bloc with free lateral and vertical margins by using this novel technique, including five lesions (5/12, 41.6%) in less-accessible positions, where TA-EMR enabled complete visualization of the base before resection. Mean longest lesion and specimen sizes were 9 mm (range: 6-25 mm) and 11 mm in diameter (range: 7-17 mm),respectively. No serious procedure-related complications were observed. CONCLUSION: TA-EMR through the endoscope using a hemostatic clip and suture material is technically feasible. Visualization of colorectal lesions in less-accessible locations can be improved.

关键词： Traction-assisted Endoscopic mucosal resection Colon polyp Colonoscopy

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Design and simulation of gas burner ejectors

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Carbon Resources Conversion 2021年第1期4卷 28-35页

作者： Mario Pichler Florian Wesenauer Christian Jordan stefan Puskas bernhard Streibl Franz Winter Michael Harasek Institute of Chemical Environmental&Bioscience EngineeringTU WienGetreidemarkt 9/1661060 ViennaAustria Wienerberger AG Wienerbergerplatz 11100 ViennaAustria DrS3–Strömungsberechnung und Simulation e.U. Simmeringer Hauptstraße 397/1411110 ViennaAustria

Ignition within gas burner ejectors can lead to off design conditions and has significant influence on the burner *** ignition in the ejector should be *** the present study the influence of combustion reactions on the performance of gas burner injectors is *** investigate if ignition is possible,simulated ignition delay times,using a detailed reaction mechanism,are compared to predicted mean residence times of the gas in the *** burner ejectors are designed using one dimensional analytic equations,based on energy and momentum conservation equations and conventional isentropic equations.1D results are compared to 2D computational fluid dynamics(CFD)simulations,to take into account non-ideal mixing effects along the *** are validated with experiments with air at room temperature.1D results show very good agreement not only with CFD simulations for the case of non-reactive flows,but also with performed *** is shown that the assumption of ideal mixing along the ejector and thus the comparison of the ignition delay time to the gas mean residence time,to predict ignition in the ejector,is not *** in the ejector is possible,even if the ignition delay time is more than thirty times higher than the mean residence *** addition to that,it is shown,that ignition and the choice of reaction mechanism have significant influence on the predicted gas burner ejector ***,the accurate prediction of ignition delay time and the use of a detailed reaction kinetic are mandatory to correctly predict the burner ejector behavior.

关键词： Self-ignition Flammability limits Reacting jet Ejector Jet pump Computational fluid dynamics

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Positive predictors for gastroesophageal reflux disease and the therapeutic response to proton-pump inhibitors

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World Journal of Gastroenterology 2014年第14期20卷 4017-4024页

作者： Valentin Becker stefan Grotz Christoph Schlag Simon Nennstiel Analena Beitz bernhard Haller Roland M Schmid Alexander Meining Monther Bajbouj Ⅱ. Medizinische Klinik und Poliklinik Technische Universit?t München Institut für Medizinische Statistik und Epidemiologie Technische Universit?t München

AIM: To identify objective and subjective predictors for the reliable diagnosis of gastroesophageal reflux disease (GERD) and the response to proton pump inhibitor (PPI) therapy.

关键词： Gastroesophageal reflux Gastroesophageal reflux disease Non-erosive reflux disease Impedance pH measurement Follow-up Therapy Proton pump inhibitor

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