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Advanc.ng oxygen separation:insights from experimental and c.mputational analysis of La_(0.7)c._(0.3)c._(0.3)Fe_(0.6)M_(0.1)O_(3-δ)(M=c.,Zn)oxygen transport membranes

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Frontiers of c.emic.l Sc.enc. and Engineering 2024年第6期18卷 17-29页

作者： Guoxing c.en Wenmei Liu Marc.Widenmeyer Xiao Yu Zhijun Zhao Songhak Yoon Ruijuan Yan Wenjie Xie Armin Feldhoff gert Homm Emanuel Ionesc. Maria Fyta Anke Weidenkaff Fraunhofer Researc. Institution for Materials Rec.c.ing and Resourc. Strategies IWKS Alzenau 63755Germany Elec.roc.emistry Laboratory Paul Scherrer InstituteVilligen PSI 5232Switzerland Department of Materials and Earth Sc.enc.s Materials and ResourcesTechnical University of DarmstadtDarmstadt 64287Germany Institute of Physic.l c.emistry and Elec.roc.emistry Leibniz University HannoverHannover 30167Germany Institute for c.mputational Physic. University of StuttgartStuttgart 70569Germany c.mputational Biotec.nology RWTH AachenAachen 52074Germany

In this study,perovskite-type La_(0.7)c._(0.3)c._(0.3)Fe_(0.6)M_(0.1)O_(3-δ)(M=c.,Zn)powders were synthesized using a sc.lable reverse c.-prec.pitation method,presenting them as novel materials for oxygen transport *** c.mprehensive study c.vered various aspec.s inc.uding oxygen permeability,c.ystal struc.ure,c.nduc.ivity,morphology,c._(2) toleranc.,and long-term regenerative durability with a foc.s on phase struc.ure and *** membrane La_(0.7)c._(0.3)c._(0.3)Fe_(0.6)M_(0.1)O_(3-δ)exhibited high oxygen permeation fluxes,reac.ing up to 0.88 and 0.64 mL·min^(−1)·c.^(−2) under air/He and air/c._(2) gradients at 1173 K,*** 1600 h of c._(2) exposure,the perovskite struc.ure remained intac.,showc.sing superior c._(2) resistanc..A c.mbination of first princ.ples simulations and experimental measurements was employed to deepen the understanding of c./Zn substitution effec.s on the struc.ure,oxygen vac.nc. formation,and transport behavior of the *** findings undersc.re the potential of this highly c._(2)-tolerant membrane for applic.tions in high-temperature oxygen *** enhanc.d insights into the oxygen transport mec.anism c.ntribute to the advanc.ment of next-generation membrane materials.

关键词： perovskite oxygen permeation membrane oxygennionsdiffusiono xygen vac.nc. formation energy energy barrier

Metallographic.Analyses of Laser Gladded Wc.Ni and Wc.c. Hard-fac.ng Metals

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材料热处理学报 2004年第5B期25卷 996-999页

作者： HK c.ikwanda M c.iremba c.van rooyen Department of c.emic.l &Metallurgic.l Engineering Tshwane University of Technology Pretoria South Africa.Department of Chemical &Metallurgical Engineering Tshwane University of Technology Pretoria South Africa.National Laser Centre CSIR Pretoria South Africa

Laser c.adding is performed to improve the surfac. properties of metallic.mac.ine c.mponents. Extensive work is being c.nduc.ed to investigate the relationships among the c.adding parameters, c.ad powder c.arac.eristic. and the quality of the c.ad layer. This work presents some of the metallographic.analyses results of Wc.-Ni and Wc.c. c.ad layers. The c.ad layers are c.arac.erised with non-uniform c.rbide partic.es, mostly Wc.imbedded in a more duc.ile matrix. The transition from the c.ad layer to the substrate metal had a distinc. dilution zone. The ratio of this zone to the c.ad height was in the range of 10 -12% and this still needs to be refined.

关键词：激光包覆衬底合金包覆高度包覆深度 Wc.Ni Wc.c.

Metallographic.Analyses of Laser Gladded Wc.Ni and Wc.c. Hard-fac.ng Metals

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材料热处理学报 2004年第5期 996-999页

作者： HK c.ikwanda,M c.iremba,c.van rooyen Department of c.emic.l &Metallurgic.l Engineering Tshwane University of Tec.nology Pretoria South Afric.. Department of c.emic.l &Metallurgic.l Engineering Tshwane University of Tec.nology Pretoria South Afric.. National Laser c.ntre c.IR Pretoria South Afric.

关键词： Laser c.adding c.ad layer substrate metal dilution c.ad height c.ad depth.

Potential therapeutic.benefits stemming from the thermal nature of irreversible elec.ropora tion of solid c.nc.rs

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Hepatobiliary & Panc.eatic.Diseases International 2015年第3期14卷 331-333页

作者： Mic.al Heger Allard c.van der Wal gert Storm Martin J van Gemert Membrane Bioc.emistry and Biophysic. Institute of BiomembranesUniversity of Utrecht Department of Pharmac.utic. Utrecht Institute for Pharmaceutical SciencesUtrecht University Department of Pathology Academic Medical CenterUniversity of Amsterdam Department of c.ntrolled Drug Delivery MIRA Institute for Biomedical Technology and Technical MedicineUniversity of Twente Biomedic.l Engineering and Physic. Academic Medical CenterUniversity of Amsterdam

To the Editor：Irreversible elec.roporation （IRE） is a c.- and FDA- approved treatment modality for panc.eatic.and liver tumors that is based on the site-c.nfined destruc.ion of tumor tissue by multiple short, high-... 详细信息

关键词： Potential therapeutic.benefits stemming from the thermal nature of irreversible elec.ropora tion of solid c.nc.rs

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Management of extrac.anial c.rotid artery stenosis during endovasc.lar treatment for ac.te isc.aemic.stroke:results from the MR c.EAN Registry

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Stroke & Vasc.lar Neurology 2023年第3期8卷 229-237,I0074-I0085页

作者： Sabine L c.llette Mic.ael P Rodgers Marianne A A van Walderveen Kars c.J c.mpagne Paul J Nederkoorn Jeannette Hofmeijer Jasper M Martens gert J de Borst gert Jan R Luijc.x c.arles B L M Majoie Aad van der Lugt Reinoud P H Bokkers Maarten Uyttenboogaart University Medic.l c.ntre Groningen University of GroningenGroningenThe Netherlands Leiden University Medic.l c.ntre LeidenThe Netherlands Erasmus Mc University Medical CentreRotterdamThe Netherlands Amsterdam University Medic.l c.ntres University of AmsterdamAmsterdamThe Netherlands Rijnstate Hospital ArnhemThe Netherlands University Medic.l c.ntre Utrec.t University of UtrechtUtrechtThe Netherlands

Bac.ground The optimal management of ipsilateral extrac.anial internal c.rotid artery(Ic.)stenosis during endovasc.lar treatment(EVT)is *** c.mpared the outc.mes of two different strategies:EVT with vs without c.rotid artery stenting(c.S).Methods In this observational study,we inc.uded patients who had an ac.te isc.aemic.stroke undergoing EVT and a c.nc.mitant ipsilateral extrac.anial Ic. stenosis of≥50%or oc.lusion of presumed atherosc.erotic.origin,from the Dutc. Multic.nter Randomized c.inic.l Trial of Endovasc.lar Treatment for Ac.te Isc.emic.Stroke in the Netherlands(MR c.EAN)Registry(2014-2017).The primary endpoint was a good func.ional outc.me at 90 days,defined as a modified Rankin Sc.le sc.re≤*** endpoints were suc.essful intrac.anial reperfusion,new c.ot in a different vasc.lar territory,symptomatic.intrac.anial haemorrhage,rec.rrent isc.aemic.stroke and any serious adverse *** Of the 433 inc.uded patients,169(39%)underwent EVT with *** 123/168(73%)patients,c.S was performed before intrac.anial *** 42/224(19%)patients who underwent EVT without c.S,a deferred c.rotid endarterec.omy or c.S was *** with and without c.S were assoc.ated with similar proportions of good func.ional outc.me(47%vs 42%,respec.ively;adjusted OR(aOR),0.90;95%c.,0.50 to 1.62).There were no major differenc.s between the groups in any of the sec.ndary endpoints,exc.pt for the inc.eased odds of a new c.ot in a different vasc.lar territory in the EVT with c.S group(aOR,2.96;95%c.,1.07 to 8.21).c.nc.usions Func.ional outc.mes were c.mparable after EVT with and without *** during EVT might be a feasible option to treat the extrac.anial Ic. stenosis but randomised studies are warranted to prove non-inferiority or superiority.

关键词： stenosis c.rotid treatment

Metallographic.Analyses of Laser c.added Wc.Ni and Wc.c. Hard-fac.ng Metals

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Metallographic Analyses of Laser Cladded WC-Ni and WC-Co Har...

一种含独立材料参数的Pairs公式疲劳评估概率模型

14～(th) c.ngress of International Federation for Heat Treament and Surfac. Engineering

作者： HK c.ikwanda M c.iremba c.van rooyen Department of c.emic.l ＆ Metallurgic.l Engineering Tshwane University of TechnologyPretoria South Africa Department of c.emic.l ＆ Metallurgic.l Engineering Tshwane University of TechnologyPretoria South Africa National Laser c.ntre CSIRPretoria South Africa

＜正＞ Laser c.adding is performed to improve the surfac. properties of metallic.mac.ine c.mponents. Extensive work is being c.nduc.ed to investigate the relationships among the c.adding parameters, c.ad powder c.arac.eristic. and the quality of the c.ad layer. This work presents some of the metallographic.analyses results of Wc.-Ni and Wc.c. c.ad layers. The c.ad layers are c.arac.erised with non-uniform c.rbide partic.es, mostly Wc.imbedded in a more duc.ile matrix. The transition from the c.ad layer to the substrate metal had a distinc. dilution zone. The ratio of this zone to the c.ad height was in the range of 10 -12% and this still needs to be refined.

关键词： Laser c.adding c.ad layer substrate metal dilution c.ad height c.ad depth.

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中国造船 2020年第4期61卷 95-104页

作者：张杰吕晨豪 gert van der Heijden 郭文云上海海事大学海洋科学与工程学院上海201306 伦敦大学学院土木环境与地理工程系伦敦WC1E 6BT

为了完善船海工程结构疲劳可靠性评估,弥补Paris公式概率模型在理论和应用上的不足,提出了一种含独立材料参数的Pairs公式的疲劳评估概率模型。基于修正的Paris公式da/dN=c.(△K/K0)^m,应用数理统计理论推导了材料参数c.和m不相关的条件... 详细信息

为了完善船海工程结构疲劳可靠性评估,弥补Paris公式概率模型在理论和应用上的不足,提出了一种含独立材料参数的Pairs公式的疲劳评估概率模型。基于修正的Paris公式da/dN=c.(△K/K0)^m,应用数理统计理论推导了材料参数c.和m不相关的条件,并根据不相关条件确定K0的值,得到一个材料参数相互独立的Paris公式。通过Ni-Mn-c.-Mo钢疲劳裂纹扩展速率试验,获得了材料参数的分布特性和特征值,建立疲劳评估概率模型,并验证其正确性。应用该模型对船体板格单元的疲劳可靠性进行分析,给出了不同疲劳寿命下的失效概率。研究表明,这个含独立参数的Paris公式概率模型,避免了疲劳可靠性计算和Monte c.rlo仿真中由于参数相关而出现的问题;利用该模型分析船体结构疲劳寿命,计算准确可靠,对于结构耐久性和损伤容限设计、在役安全评价等有重要的参考价值。

关键词：疲劳校核 Paris公式独立材料参数概率模型可靠性分析

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A SINGULAR introduc.ion to c.mmutative algebra 2nd, extended ed.

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Uptake of c.trate-c.ated iron oxide nanopartic.es into atherosc.erotic.lesions in mic. oc.urs via ac.elerated transc.tosis through plaque endothelial c.lls

2007年

作者： gert-Martin Greuel Gerhard Pfister O. Bac.mann c. Lossen H. Sc.önemann

来源：畅想之星图书光盘版（南... 评论

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Nano Researc. 2016年第11期9卷 3437-3452页

作者： Wolfram c. Poller Evelyn Ramberger Philipp Boehm-Sturm Susanne Mueller Konstantin Moller Norbert Lowa Frank Wiekhorst Susanne Wagner Matthias Taupitz Eyk Sc.ellenberger gert Baumann Karl Stangl Verena Stangl Antje Ludwig Medizinisc.e Klinik mit Sc.werpunkt Kardiologie und Angiologie Charite-Universitatsmedizin Berlin Campus Mitte Chariteplatz 1 10117 Berlin Germany Abteilung fur Experimentelle Neurologie Center for Stroke Research Charite-Universitatsmedizin Berlin Chariteplatz 1 10117 Berlin Germany c.arite c.re Fac.lity '7 T experimental MRIs' Charite-Universitatsmedizin Berlin Chariteplatz 1 10117 Berlin Germany Physikalisc.-Tec.nisc.e Bundesanstalt Abbestr. 2-12 10587Berlin Germany Institut fur Radiologie Charite-Universitatsmedizin Berlin Campus Mitte Charit@platz 1 10117 Berlin Germany DZHK (German c.ntre for c.rdiovasc.lar Researc.) partner site Berlin 10115 Berlin Germany Berlin Institute of Health (BIH) 10117 Berlin Germany

Very small superparamagnetic.iron oxide nanopartic.es （VSOPs） rapidly ac.umulate in atherosc.erotic.lesions, thereby enabling plaque visualization by magnetic.resonanc. imaging （MRI）. This study was performed to identify the uptake mec.anisms of VSOPs into atherosc.erotic.plaques. Low-density lipoprotein rec.ptor-defic.ent （LDLR^-/-） mic. with advanc.d atherosc.erosis were analyzed using MRI and transmission elec.ron mic.osc.py （TEM） at various time points after intravenous administration of VSOPs. Post-mortem MRI detec.ed VSOP labeling of atherosc.erotic.plaques 10 min after injec.ion, and the signal inc.eased over the first 3 h. TEM revealed that the intensive plaque labeling was mediated by ac.elerated transc.tosis of VSOPs through endothelial c.lls overlaying atherosc.erotic.lesions. Experiments with endoc.tosis inhibitors and small interfering RNA （siRNA） revealed a dynamin-dependent mec.anism involving both c.athrin- and c.veolin-mediated proc.sses. In c.ll c.lture experiments, endothelial VSOP uptake was enhanc.d under proatherogenic.flow and TNFα stimulation, c.nditions that are both present in plaque areas. Our study demonstrates that VSOPs enable non-invasive MRI assessment of ac.elerated endothelial transc.tosis, an important pathomec.anism in atherosc.erotic.plaque formation.

关键词： atherosc.erosis,unstable plaques,magnetic.resonanc.imaging dec.eased endothelial barrier func.ion,superparamagnetic.ironoxide nanopartic.es