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The origin of the lattice thermal conductivity enhancement at the ferroelectric phase transition in GeTe

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npj Computational Materials 2021年第1期7卷 529-536页

作者： Đorđe Dangić olle Hellman Stephen Fahy Ivana Savić Department of Physics University College CorkCorkIreland Tyndall National Institute CorkIreland Department of Physics Chemistry and Biology(IFM)Linköping UniversityLinköpingSweden

The proximity to structural phase transitions in IV-VI thermoelectric materials is one of the main reasons for their large phonon anharmonicity and intrinsically low lattice thermal conductivityκ.However,theκof GeTe increases at the ferroelectric phase transition near 700 *** first-principles calculations with the temperature dependent effective potential method,we show that this rise inκis the consequence of negative thermal expansion in the rhombohedral phase and increase in the phonon lifetimes in the high-symmetry *** anharmonicity near the phase transition induces non-Lorentzian shapes of the phonon power *** account for these effects,we implement a method of calculatingκbased on the Green-Kubo approach and find that the Boltzmann transport equation underestimatesκnear the phase *** findings elucidate the influence of structural phase transitions onκand provide guidance for design of better thermoelectric materials.

关键词： phase transition ferroelectric

Motility index measured by magnetic resonance enterography is associated with sex and mural thickness

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World Journal of Gastroenterology 2020年第36期26卷 5484-5497页

作者： Sven Mansson olle Ekberg Bodil Ohlsson Medical Radiation Physics Department of Translational MedicineLund UniversitySkåne University Hospital MalmöMalmö20502Sweden Department of Translational Medicine Diagnostic RadiologyLund UniversitySkåne University HospitalMalmö20502Sweden Department of Internal Medicine Skåne University HospitalLund UniversityMalmöS-20502Sweden

BACKGROUND Recently,a technique has been developed to use magnetic resonance enterography(MRE)for the evaluation of small bowel *** hypothesis was that assessment of the motility index(MI)should reflect differences in motility between clinical *** To aim of the present observational,cross-sectional study was to evaluate the use of the MI in daily clinical *** All consecutive patients aged 18-70 years who were referred for MRE at the Department of Radiology during a 2-year period were asked to *** volunteers were included as *** was prepared and conducted in accordance with clinical *** the day of examination,all the participants had to complete the visual analog scale for irritable bowel syndrome(IBS)and IBS-symptom severity *** of MI were calculated from dynamic MR *** was used to evaluate differences in MI between groups,classified as healthy,Crohn’s disease,ulcerative colitis,IBS,other assorted disorders and *** and linear regression were applied to the MI *** medical records were scrutinized for medical *** In all,224 examinations were included(inclusion prevalence 76.3%),with 22 controls and 202 *** was a significant difference in the MI of the jejunum(P=0.021)and terminal ileum(P=0.007)between the different *** MI was inversely associated with the mural thickness of the terminal ileum in men(P<0.001)and women(P=0.063)after adjustments,and tended to be lower in men than in women(P=0.056).Subjectively observed reduction of motility on MRI was accomplished by reduced MI of terminal ileum in men(P<0.001)and women(P=0.030).In women,diarrhea was inversely associated with the MI of the jejunum(P=0.029),and constipation was positively associated with the MI of the terminal ileum(P=0.039).CONCLUSION Although MIs differ across diseases,a lower MI of the terminal ileum is mainly associated with male sex and an increased mural thickness.S

关键词： Dysmotility Gastrointestinal symptoms Magnetic resonance enterography Motility index Mural thickness Small bowel

Development of polymer–fullerene solar cells

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National Science Review 2016年第2期3卷 222-239页

作者： Fengling Zhang olle Ingans Yinhua Zhou Koen Vandewal Biomolecular and organic electronics Department of PhysicsChemistry and Biology(IFM)Linkoping University Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Institut fr Angewandte Photophysik Technische Universitt Dresden

Global efforts and synergetic interdisciplinary collaborations on solution-processed bulk-heterojunction polymer solar cells(PSCs or OPVs) made power conversion efficiencies over 10%*** rapid progress of the field is credited to the synthesis of a large number of novel polymers with specially tunable optoelectronic properties,a better control over the nano-morphology of photoactive blend layers,the introduction of various effective interfacial layers,new device architectures and a deeper understanding of device *** will review the pioneering materials for polymer-fullerene solar cells and trace the progress of concepts driving their *** discuss the evolution of morphology control,interfacial layers and device structures fully exploring the potential of photoactive *** order to guide a further increase in power conversion efficiency of OPV,the current understanding of the process of free charge carrier generation and the origin of the photovoltage is summarized followed by a perspective on how to overcome the limitations for industrializing PSCs.

关键词： polymer-fullerene solar cells electron donors and acceptors morphology interfacial layer device physics

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Asian Journal of Andrology 2014年第1期16卷 50-59页

作者： Konstantin Svechnikov Jan-Bernd Stukenborg Iuliia Savchuck olle Sider Department of Women's and Children's Health Paediatric Endocrinology Unit Karolinska Institutet and University Hospital Stockholm Sweden

During the past few decades, scientific evidence has been accumulated concerning the possible adverse effects of the exposure to environmental chemicals on the well-being of wildlife and human populations. One large and growing group of such compounds of anthropogenic or natural origin is referred to as endocrine-disrupting chemicals （EDCs）, due to their deleterious action on the endocrine system. This concern was first focused on the control of reproductive function particularly in males, but has later been expanded to include all possible endocrine functions. The present review describes the underlying physiology behind the cascade of developmental events that occur during sexual differentiation of males and the specific role of androgen in the masculinization process and proper organogenesis of the external male genitalia. The impact of the genetic background, environmental exposures and lifestyle factors in the etiology of hypospadias, cryptorchidism and testicular cancer are reviewed and the possible role of EDCs in the development of these reproductive disorders is discussed critically. Finally, the possible direct and programming effects of exposures in utero to widely use therapeutic compounds, environmental estrogens and other chemicals on the incidence of reproductive abnormalities and poor semen quality in humans are also highlighted.

关键词： endocrine disrupters male (in)fertility reproductive disorders testis testicular steroidogenesis

Second Hemispheric Conference on Medical Geology

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Episodes 2008年第3期31卷 361-362页

作者： Slinus, olle Finkelman, Robert B. Centeno, Jose A. Geol Survey Sweden Uppsala Sweden Univ Texas Dallas Dallas TX 75230 USA Armed Forces Inst Pathol Washington DC 20306 USA

The Second Hemispheric Conference on Medical Geology was organised in Atibaia, State of Sao Paulo, Brazil. The conference was linked to the annual meeting of Geo- sciences for Environmental Management, GEM, a short course in medical geology organised by the International Medical Geol- ogy Association and the X1 Brazilian Geo- chemical Congress. The host was the Brazilian Geochemical Society-SBGq.

关键词：医学地质学国际会议研究项目计划设计

Multimodal cardiovascular imaging : principles and clinical applications / olle Pahlm, Galen S. Wagner, [editors].

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The Medical Geology revolution --The evolution of an IUGS initiative

2011年

作者： olle Pahlm Galen S. Wagner [editors].

来源：畅想之星图书光盘版（南... 评论

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Episodes 2007年第4期30卷 305-309页

作者： olle Selinus Robert B. Finkelman Jose A. Centeno Geological Survey of SwedenUppsala SE-751 28SWEDEN University of Texas at DallasDept. of GeosciencesRichardson TX 750833USA U. S. Armed Forces Institute of PathologyWashington DC 20306-6000USA

Introduction In December 2003 Episodes published an article entitled “Medical Geology： New Relevance in the Earth Sciences” by Bowman, Bobrowski, and Selinus. This paper was just one early example of the interest and excitement sparked by this emerging field of medical geology-the impacts of geologic materials and geologic processes on animal and human health. Medical geology attempts to bring together geoscientists and biomedical/public health researchers to address a range of environmental health problems. Much of the impetus for the resurgence of interest in medical geology was a direct result of support and encouragement from the International Union of Geological Sciences （IUGS） and its former Commission on Geologic Sciences for Environmental Plan- ning （COGEOENVIRONMENT）.

关键词：医学地质学进化方法国际地质科学联合会创作精神

Mn_(x)Cr_(0.3)Fe_(0.5)Co_(0.2)Ni_(0.5)Al_(0.3)high entropy alloys for magnetocaloric refrigeration near room temperature

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Journal of Materials Science & Technology 2021年第20期79卷 15-20页

作者： Zhihua Dong Shuo Huang Valter Ström Guocai Chai Lajos Károly Varga olle Eriksson Levente Vitos Applied Materials Physics Department of Materials Science and EngineeringKTH-Royal Institute of TechnologyStockholm SE-10044Sweden College of Materials Science and Engineering Chongqing UniversityChongqing 400030China Department of Physics and Astronomy Division of Materials TheoryUppsala UniversityUppsala SE-75121Sweden Department of Materials Science and Engineering KTH-Royal Institute of TechnologyStockholm SE-10044Sweden Division of Engineering Materials Department of Management and EngineeringLinköping UniversityLinköping SE-58183Sweden AB Sandvik Materials Technology R&D Center Sandviken SE-81181Sweden School of Science and Technology Örebro UniversityÖrebro SE-70281Sweden Research Institute for Solid State Physics and Optics Wigner Research Center for PhysicsP.O.Box 49H-1525 BudapestHungary

High entropy alloys(HEAs)based on transition metals display rich magnetic characteristics,however attempts on their application in energy efficient technologies remain ***,we explore the magnetocaloric application for... 详细信息

关键词： High entropy alloys Magnetocaloric materials Magnetic phase transition Experiment and Ab initio

Antimicrobial Profile of Lactic Acid Bacteria Isolated from Vegetables and Indigenous Fermented Foods of India against Clinical Pathogens Using Microdilution Method

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Biomedical and Environmental Sciences 2013年第9期26卷 759-764页

作者： Ami PATEL Nihir SHAH Padma AMBALAM J. B. PRAJAPATI olle HOLST Asa LJUNGH Department of Dairy Microbiology SMC College of Dairy Science Anand Agricultural University Department of Biotechnology Lund University Department of Medical Microbiology Lund University

In dairy and food industries lactic acid bacteria （LAB） have been used in form of starter culture that plays vital role in fermentation; as flavouring and texturizing or as preservative agents. There is increasing evidence that lactobacilli which inhabit the gastrointestinal tract develop antimicrobial activities and participate in the host＇s defence system[1]. During fermentation, most of the LAB produces a number of different compounds like organic acids, hydrogen peroxide, diacetyl, acetaldehyde, carbon dioxide, polysaccharides, and proteinaceous compounds called bacteriocins or bacteriocinogenic peptides.

关键词： Antimicrobial Profile of Lactic Acid Bacteria Isolated from Vegetables and Indigenous Fermented Foods of India against Clinical Pathogens Using Microdilution Method CFS