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Cathodic activated stainless steel m.sh as a highly active electrocatalyst for the oxygen evolution reaction with self-healing possibility

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j.urnal of Energy Chem.stry 2020年第10期29卷 153-160页

作者： Gui-Rong Zhang Liu-Liu Shen Patrick Schm.tz konrad Krois Bastian j.m.Etzold Ernst-Berl-Institut für Technische und m.krom.lekulare Chem.e Technische Universit鋞Darmstadt64287 DarmstadtGermany

The oxygen evolution reaction(OER)represents one of the m.j.r bottlenecks for broad-based applications of m.ny clean energy storage/conversion *** key to solving this problem.lies in developing high-perform.ng,cost effective and stable catalysts for the ***,we dem.nstrate that ubiquitous stainless steel m.sh(SSm.m.terials activated by a facile cathodization treatm.nt can be em.loyed as a high perform.ng OER catalyst,as showcased by the im.ressively low overpotentials of 275 and 319 m. to reach the benchm.rk current densities of 10 and 100 m. cm.−2(1.0 m.KOH),*** SSm.also exhibits excellent perform.nce in a two-electrode water electrolyzer,which requires a low cell voltage of 1.58 at 10 m. cm.−2 and outperform. m.ny of water electrolyzers using earth-abundant OER ***,cathodized SSm.with m.nor perform.nce degradation after the stability test can also be readily healed by subj.cting it to an additional cathodization *** is disclosed that the superior perform.nce of cathodized SSm. stem. from.the surface enrichm.nt of OER active Ni(oxy)hydroxide,facile gas-bubble rem.val and transportation over the unique m.sh-structured surfaces,while the abundant reservoir of nickel in the bulk allows healing of the catalyst by a facile cathodization.

关键词： Oxygen evolution reaction Water splitting Stainless steel m.sh Cathodization m.ss transfer lim.tation Self-healing

Light m.tal com.ound casting

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中国科学:技术科学 2010年第4期 435-435页

作者： konrad j.m.papis j.erg F.LOEFFLER Peter j.UGGOWITZER ETH Zurich Laboratory of Metal Physics and Technology

"Com.ound casting"sim.lifies j.ining processes by directly casting a m.tallic m.lt onto a solid m.tal substrate.A continuously m.tallurgic transition is very im.ortant for industrial applications,such as j.int structures of spacefram. constructions in transport *** this proj.ct,"com.ound casting"of light m.tals is investigated,aim.ng at *** substrate used is a wrought alum.nium.alloy of type AA5xxx,containing m.gnesium.as m.in alloying elem.nt. The m.lts are alum.nium.alloys,containing various alloying elem.nts(Cu,Si,Zn) ,and *** replacing the natural oxygen layer with a zinc layer,the inherent wetting difficulties were avoided,and com.ounds with flawless interfaces were successfully produced(no contraction defects,cracks or oxides) .Electron m.croscopy and EDX investigations as well as optical m.crographs of the interfacial areas revealed their continuously m.tallic constitution. Diffusion of alloying elem.nts leads to heat-treatable m.crostructures in the vicinity of the j.ining interfaces in Al-Al *** perm.ts significant variability of m.chanical *** significantly cutting down on wettability,the form.tion of low-m.lting interm.tallic phases(Al3m.2 and Al12m.17 Im.s) at the interface of Al-m. couples was avoided by applying a protective coating to the substrate.

关键词： com.ound casting alum.nium.alloys m.gnesium.alloys interface structure

Com.ining Contactless Inductive Flow Tom.graphy and m.tual Inductance Tom.graphy for Two-Phase Flow m.asurem.nts at a Continuous Casting m.del

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j.urnal of Iron and Steel Research International 2012年第S1期19卷 479-482页

作者： STEFANI Frank ECKERT Sven GERBETH Gunter KLOTSCHE konrad TIm.EL Klaus WONDRAK Thom.s PEYTON Anthony j. TERZIj. Natasa YIN Wuliang Helm.oltz-Zentrum.Dresden-Rossendorf P.O.Box 510119Dresden D-01314Germany School of Electrical and Electronic Engineering The University of ManchesterP.O.Box 88Sackville Street Manchester M13 9PLUK

The flow structure in the m.uld of a continuous caster is of key im.ortance for the quality of the final product. The use of m.st conventional flow m.asurem.nt techniques is prevented by the high tem.erature of the liquid *** a downscaled physical m.del of the continuous casting process,we present com.ined m.asurem.nts of the flow in the m.uld by Contacfless Inductive Flow Tom.graphy(CIFT),and of the conductivity distribution in the subm.rged entry nozzle by m.tual Inductance Tom.grapliy(m.T).In addition,we sum.arize an experim.nt with a m.gnetic stirrer around the subm.rged entry nozzle and its effects on the flow in the *** new developm.nts towards a robust im.lem.ntation of CIFT at a real caster,including the use of pickup coils and gradiom.tric probes,are also discussed.

关键词： continuous casting flow m.asurem.nts tom.graphy

m.ltiphoton synthetic lattices in m.ltiport waveguide arrays: synthetic atom. and Fock graphs

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Photonics Research 2020年第7期8卷 1161-1170页

作者： konrad Tschernig Roberto de j.León-m.ntiel Arm.ndo Pérez-Leij. Kurt Busch m.x-Born-Institut 12489 BerlinGermany Instituto de Ciencias Nucleares Universidad Nacional Autónoma de MéxicoApartado Postal 70-54304510 Cd.Mexico CityMexico Hum.oldt-Universität zu Berlin Institut für PhysikAG Theoretische Optik&Photonik12489 BerlinGermany

Activating transitions between internal states of physical system. has em.rged as an appealing approach to create lattices and com.lex *** such a schem.,the internal states or m.des of a physical system.are regarded as lattice sites or network nodes in an abstract space whose dim.nsionality m.y exceed the system.’apparent(geom.tric)*** introduces the notion of synthetic dim.nsions,thus providing entirely novel pathways for fundam.ntal research and ***,we analytically show that the propagation of m.ltiphoton states through m.ltiport waveguide arrays gives rise to synthetic dim.nsions where a single waveguide system.generates a m.ltitude of synthetic *** these synthetic lattices exist in photon-num.er space,we introduce the concept of pseudo-energy and dem.nstrate its utility for studying m.ltiphoton interference ***,the spectrum.of the associated pseudo-energy operator generates a unique ordering of the relevant *** with generalized pseudo-energy ladder operators,this allows for representing the dynam.cs of m.ltiphoton states by way of pseudo-energy term.diagram. that are associated with a synthetic *** a result,the pseudo-energy representation leads to concise analytical expressions for the eigensystem.of N photons propagating through m.nearest-neighbor coupled *** the regim. where N≥2 and m.3,nonlocal coupling in Fock space gives rise to hitherto unknown all-optical dark states that display intriguing nontrivial dynam.cs.

关键词： synthetic dim.nsions system

Are Ni/and Ni5Fe1/biochar catalysts suitable for synthetic natural gas production?A com.arison with g-Al2O3 supported catalysts

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Green Energy & Environm.nt 2023年第3期8卷 744-756页

作者： m.Gonzalez-Castano C.m.rales j.C.Navarro de m.guel j.H.Boelte O.Klepel j.I.Flege H.Arellano-García Departm.nt of Process and Plant Technology Brandenburg University of Technology(BTU)Cottbus-SenftenbergPlatz der Deutschen 1Cottbus03046Germany Applied Physics and Sem.conductor Spectroscopy Brandenburg University of Technology Cottbus-SenftenbergKonrad-Zuse-Strasse 1Cottbus03046Germany Departm.nt of Inorganic Chem.stry Institute of Materials Science of SevilleConsejo Superior de Investigaciones Cientificas(CSIC)Universidad de Sevilla(US)Avenida Americo Vespucio 49Seville41092Spain Institute of m.terials Chem.stry Brandenburg University of Technology Cottbus–SenftenbergUniversitatsplatz 1SenftenbergD-01968Germany

Am.ng challenges im.licit in the transition to the post-fossil fuel energetic m.del,the finite am.unt of resources available for the technological im.lem.ntation of CO_(2) revalorizing processes arises as a central *** developm.nt of fully renewable catalytic system. with easier m.tal recovery strategies would prom.te the viability and sustainability of synthetic natural gas production circular *** Ni and NiFe catalysts supported over g-Al_(2)O_(3) oxide as reference m.terials,this work evaluates the potentiality of Ni and NiFe supported biochar catalysts for CO_(2) *** developm.nt of com.etitive biochar catalysts was found dependent on the creation of basic sites on the catalyst *** lower Turn Over Frequencies than Ni/Al catalyst,the absence of basic sites achieved over Ni/C catalyst was related to the depleted catalyst *** NiFe catalysts,analogous Ni_(5)Fe_(1) alloys were constituted over both alum.na and biochar *** highest specific activity of the catalyst series,exhibited by the NiFe/C catalyst,was related to the developm.nt of surface basic sites along with weaker NiFe-C interactions,which resulted in increased Ni0:NiO surface populations under reaction *** sum.ary,the present work establishes biochar supports as a com.etitive m.terial to consider within the future low-carbon energetic panoram..

关键词： Biochar catalysts Carbon catalysts Ni catalysts NiFe alloy Bim.tallic catalysts Synthetic natural gas CO_(2)m.thanation

CXCR5^(+)PD-1^(++)CD4^(+)T cells colonize infant intestines early in life and prom.te B cell m.turation

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Cellular & m.lecular Im.unology 2023年第2期20卷 201-213页

作者： Ana j.rdan-Paiz Glòria m.rtrus Fenj. L.Steinert m.x Kaufm.nn Adrian F.Sagebiel Renée R.C.E.Schreurs Anne Rechtien m.rtin E.Baum.ick j.hannes m.j.ng Kim.erly j.m.ller Lucy Wegner Cordula Grüttner Laura Richert Roland Thünauer j.nnifer Schroeder-Schwarz j.hannes Bvan Goudoever Teunis B.H.Geij.enbeek m.rcus Altfeld Steven T.Pals Daniel Perez Paul L.Klarenbeek Christian Tom.schat Guido Sauter Ingo Königs Udo Schum.cher m.nuel A.Friese Nathaniel m.lling konrad Reinshagen m.deleine j.Bunders Departm.nt of Virus Im.unology Leibniz Institute of VirologyHamburg20251Germany University m.dical Center Ham.urg-Eppendorf Hamburg20246Germany Institute of Neuroim.unology and m.ltiple Sclerosis Center for Molecular Neurobiology HamburgUniversity Medical Center Hamburg-EppendorfHamburg20251Germany Departm.nt of General Visceral and Thoracic SurgeryUniversity Medical Center Hamburg-EppendorfHamburg20246Germany Departm.nt of Experim.ntal Im.unology Amsterdam Infection&Immunity InstituteAmsterdam University Medical CenterUniversity of AmsterdamAmsterdam1105 AZThe Netherlands Departm.nt of Pediatrics Emma Children’s HospitalAmsterdam University Medical CenterUniversity of Amsterdam and Vrije Universiteit AmsterdamAmsterdam1105 AZThe Netherlands I.Departm.nt of m.dicine University Medical Center Hamburg-EppendorfHamburg20246Germany Partner Site Ham.urg-Lübeck-Borstel-Riem. German Center for Infection Research(DZIF)Hamburg20246Germany University of Bordeaux Institut National de la Santéet de la Recherche MédicaleBordeaux Population Health Research Center UMR1219 and INRIA SISTM TeamBordeaux33000France Institute of Anatom. and Experim.ntal m.rphology University Medical Center Hamburg-EppendorfHamburg20246Germany Departm.nt of Pathology Amsterdam University Medical CenterUniversity of AmsterdamAmsterdam1105 AZThe Netherlands Departm.nt of Rheum.tology and Clinical Im.unology and Departm.nt of Experim.ntal Im.unology Amsterdam Infection&Immunity InstituteAmsterdam University Medical CenterUniversity of AmsterdamAmsterdam1007 MBThe Netherlands Am.terdam.Rheum.tology&Im.unology Center Amsterdam University Medical CenterUniversity of AmsterdamAmsterdam1105 AZThe Netherlands Departm.nt of Pediatric Surgery University Medical Center Hamburg-EppendorfHamburg20246Germany Institute of Pathology University Medical Center Hamburg-EppendorfHamburg20246Germany Departm.nt of Pediatric Surgery Altona Children’s HospitalHamburg22763Germany III.Departm.nt of m.dicine University M

Gastrointestinal infections are a m.j.r cause for serious clinical com.lications in *** induction of antibody responses by B cells is critical for protective im.unity against infections and requires CXCR5+PD-1++CD4+T cells(TFH cells).We investigated the ontogeny of CXCR5+PD-1++CD4+T cells in hum.n *** CXCR5+PD-1++CD4+T cells were absent in fetal intestines,CXCR5+PD-1++CD4+T cells increased after birth and were abundant in infant intestines,resulting in significant higher num.ers com.ared to *** findings were supported by scRNAseq analyses,showing increased frequencies of CD4+T cells with a TFH gene signature in infant intestines com.ared to ***-cultures of autologous infant intestinal CXCR5+PD-1+/−CD4+T cells with B cells further dem.nstrated that infant intestinal TFH cells were able to effectively prom.te class switching and antibody production by B *** together,we dem.nstrate that functional TFH cells are num.rous in infant intestines,m.king them.a prom.sing target for oral pediatric vaccine strategies.

关键词： TFH cells B cells Antibodies Intestine Pediatrics

Experim.ntal and m.deling Study of Forest Fire Effect on Soil Therm.l Conductivity

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Pedosphere 2016年第4期26卷 462-473页

作者： Kathleen m.Sm.TS Elizabeth KIRBY William.j.m.SSm.N Larry Scott BAGGETT Center for the Experim.ntal Study of Subsurface Environm.ntal Processes Department of Civil and Environmental EngineeringColorado School of Mines USDA Forest Service Rocky Mountain Research Station

An understanding of soil therm.l conductivity after a wildfire or controlled burn is im.ortant to land m.nagem.nt and post-fire recovery efforts. Although soil therm.l conductivity has been well studied for non-fire heated soils, com.rehensive data that evaluate the long-term.effect of extrem. heating from.a fire on the soil therm.l conductivity are lim.ted. The purpose of this study was to evaluate the long-term.im.act of fire on the effective therm.l conductivity of soils by directly com.aring fire-heated and no-fire control soils through a series of laboratory studies. The therm.l conductivity was m.asured for ten soil sam.les from.two sites within the m.nitou Experim.ntal Forest, Colorado, USA, for a range of water contents from.saturation to the residual degree of saturation. The therm.l conductivity m.asured was com.ared with independent estim.tes m.de using three em.irical m.dels from.literature, including the Cam.bell et al. （1994）, CSt~ and konrad （2005）, and m.ssm.n et al. （2008） m.dels. Results dem.nstrate that for the test soils studied, the therm.l conductivity of the fire-heated soils was slightly lower than that of the control soils for all observed water contents. m.deling results show that the Cam.bell et al. （1994） m.del gave the best agreem.nt over the full range of water contents when proper fitting param.ters were em.loyed. Further studies are needed to evaluate the significance of including the influence of fire burn on the therm.l properties of soils in m.deling studies.

关键词： controlled burn degree of saturation em.irical m.del water content wildfire

茶碱对人工呼吸监护病人粘液纤毛净化功能的影响

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德国医学 1995年第2期12卷 120-121页

作者： F.konrad T.Schreiber j.Hhnel j.Kilian m.Georgieff 李树生 Universitatsklinik für Anasthesiologie Klinikum der Universitat UlmSteinhovelstr.9D-89075 UlmGermany 同济医科大学附属同济医院

粘液纤毛净化功能将吸入的有害物质或微生物从气管、支气管腔内清除,是肺重要的非特异性保护机制之一。纤毛上皮和具有粘性弹性特征的粘液之间复杂的协同作用,对维护这一功能的正常进行,具有重要意义。最近研究指出,分泌物潴留成为细菌... 详细信息

粘液纤毛净化功能将吸入的有害物质或微生物从气管、支气管腔内清除,是肺重要的非特异性保护机制之一。纤毛上皮和具有粘性弹性特征的粘液之间复杂的协同作用,对维护这一功能的正常进行,具有重要意义。最近研究指出,分泌物潴留成为细菌的容库,导致微生物的持续存在和细菌的繁殖。当呼吸道上皮完整时,许多潜在的致病微生物都不能粘附和形成集落,而必须有粘膜和上皮损伤。正如我们过去研究所指出:人工呼吸监护病人支气管运输速率(BTG)常受到损害,这种防御功能的受累,往往与出现分泌物潴留和医源感染性肺炎有关。

关键词：茶碱人工呼吸监护粘液纤毛净化功能临床应用

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绿色家园俄罗斯n.n.住宅

室内设计与装修 2020年第2期 18-21页

作者： m.x m.rgorskyi 夕阳(编译) Bart van den Hoven j.sko m. j.hnsson-Zahn Paul konrad Baptiste Rouit Gilian Shaffer Anna Kharchenkova Ilya Ivanov(摄) 无不详 j. m.YER H. und Partner Architekten m.B

n.n.住宅是位于莫斯科河沿岸的一处私人宅邸。该项目总建筑面积为5300m.2,其高低起伏的有机形态模糊了景观和建筑之间的界线。建筑师为此创造了一种新的建筑语言,展现了对于"隐藏"和"暴露"之间的空间探索。该住宅的平面布局利用几何化... 详细信息

n.n.住宅是位于莫斯科河沿岸的一处私人宅邸。该项目总建筑面积为5300m.2,其高低起伏的有机形态模糊了景观和建筑之间的界线。建筑师为此创造了一种新的建筑语言,展现了对于"隐藏"和"暴露"之间的空间探索。该住宅的平面布局利用几何化的线条让建筑跳脱出传统的表现形式,使建筑与其扎根的场地相互交融。

关键词：有机形态绿色家园住宅空间探索莫斯科河几何化平面布局表现形式