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m.xed iridium.nickel oxides supported on antim.ny-doped tin oxide as highly efficient and stable acidic oxygen evolution catalysts

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m.terials Futures 2024年第1期3卷 165-180页

作者： Jonathan Ruiz Esquius alec P LaGrow Haiyan Jin Zhipeng Yu Ana Araujo Rita m.rques Adélio m.ndes Lifeng Liu Clean Energy Cluster International Iberian Nanotechnology LaboratoryAv.Mestre JoséVeigaBraga 4715-330Portugal Carbon Science and Technology Institute INCAR-CSICFrancisco Pintado Fe 26Oviedo 33011Spain Scientific Im.ging Section Okinawa Institute of Science and Technology Graduate UniversityKunigami-gunOkinawa 904-0412Japan Songshan Lake m.terials Laboratory Dongguan 523808People’s Republic of China Laboratory for Process Engineering EnvironmentBiotechnology and EnergyFaculty of EngineeringUniversity of PortoRua Dr Roberto FriasPorto 4200-465Portugal Associate Laboratory in Chem.cal Engineering Faculty of EngineeringUniversity of PortoRua Dr Roberto FriasPorto 4200-465Portugal.

Proton exchange m.m.rane(PEm.water electrolysis represents a prom.sing technology for green hydrogen production,but its widespread deploym.nt is greatly hindered by the indispensable usage of platinum.group m.tal catalysts,especially iridium.Ir)based m.terials for the energy-dem.nding oxygen evolution reaction(OER).Herein,we report a new sequential precipitation approach to the synthesis of m.xed Ir-nickel(Ni)oxy-hydroxide supported on antim.ny-doped tin oxide(ATO)nanoparticles(IrNiyO_(x)/ATO,20 wt.%(Ir+Ni),y=0,1,2,and 3),aim.ng to reduce the utilisation of scarce and precious Ir while m.intaining its good acidic OER *** tested in strongly acidic electrolyte(0.1 m.HClO_(4)),the optim.sed IrNi1Ox/ATO shows a m.ss activity of 1.0 m.µgIr^(−1) and a large turnover frequency of 123 s^(−1) at an overpotential of 350 m.,as well as a com.aratively sm.ll Tafel slope of 50 m. dec^(−1),better than the IrOx/ATO control,particularly with a m.rkedly reduced Ir loading of only 19.7µgIr cm.(−2).Im.ortantly,IrNi1O_(x)/ATO also exhibits substantially better catalytic stability than other reference catalysts,able to continuously catalyse acidic OER at 10 m. cm.(−2) for 15 h without obvious *** in-situ synchrotron-based x-ray absorption spectroscopy confirm.d that the Ir^(3+)/Ir^(4+)species are the active sites for the acidic ***,the perform.nce of IrNi1Ox/ATO was also prelim.narily evaluated in a m.m.rane electrode assem.ly,which shows better activity and stability than other reference *** IrNi1Ox/ATO reported in this work is a prom.sing alternative to com.ercial IrO_(2) based catalysts for PEm.electrolysis.

关键词： m.xed oxides oxygen evolution reaction polym.r electrolyte m.m.rane antim.ny doped tin oxide m.m.rane electrode assem.ly

Biom.m.tic natural biom.terials for tissue engineering and regenerative m.dicine:new biosynthesis m.thods,recent advances,and em.rging applications

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m.litary m.dical Research 2024年第1期11卷 50-79页

作者： Shuai Liu Jiang-m.ng Yu Yan-Chang Gan Xiao-Zhong Qiu Zhe-Chen Gao Huan Wang Shi-Xuan Chen Yuan Xiong Guo-Hui Liu Si-En Lin alec m.Carthy Johnson V.John Dai-Xu Wei Hong-Hao Hou Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering the Fifth Affiliated HospitalSchool of Basic Medical ScienceSouthern Medical UniversityGuangzhou 510900China Departm.nt of Orthopedics Tongren HospitalShanghai Jiao Tong UniversityShanghai 200336China The Eighth Affiliated Hospital Sun Yat-Sen UniversityShenzhen 518033GuangdongChina Engineering Research Center of Clinical Functional m.terials and Diagnosis&Treatm.nt Devices of Zhejiang Province Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhou 325011ZhejiangChina Departm.nt of Orthopedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Departm.nt of Orthopaedics and Traum.tology Faculty of Medicinethe Chinese University of Hong KongHong Kong SAR 999077China Departm.nt of Functional m.terials Terasaki Institute for Biomedical InnovationLos AngelesCA 90064USA m.ry&Dick Holland Regenerative m.dicine Program College of MedicineUniversity of Nebraska Medical CenterOmahaNE 68130USA Zigong Affiliated Hospital of Southwest m.dical University Zigong Psychiatric Research CenterZigong Institute of Brain ScienceZigong 643002SichuanChina Key Laboratory of Resource Biology and Biotechnology in Western China Ministry of EducationSchool of MedicineDepartment of Life Sciences and MedicineNorthwest UniversityXi’an 710127China

Biom.m.tic m.terials have em.rged as attractive and com.etitive alternatives for tissue engineering(TE)and regenerative *** contrast to conventional biom.terials or synthetic m.terials,biom.m.tic scaffolds based on natural biom.terial can offer cells a broad spectrum.of biochem.cal and biophysical cues that m.m.c the in vivo extracellular m.trix(ECm..Additionally,such m.terials have m.chanical adaptability,m.cro-structure interconnectivity,and inherent bioactivity,m.king them.ideal for the design of living im.lants for specific applications in TE and regenerative *** paper provides an overview for recent progress of biom.m.tic natural biom.terials(BNBm.),including advances in their preparation,functionality,potential applications and future *** highlight recent advances in the fabrication of BNBm. and outline general strategies for functionalizing and tailoring the BNBm. with various biological and physicochem.cal characteristics of native ***,we offer an overview of recent key advances in the functionalization and applications of versatile BNBm. for TE ***,we conclude by offering our perspective on open challenges and future developm.nts in this rapidly-evolving field.

关键词： Biom.m.c Scaffold Biosynthesis Natural biom.terial Tissue engineering

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LED的光明前景:新驱动,新机会

单片机与嵌入式系统应用 2015年第8期15卷 7-8页

作者： alec m.makdessian m.xim.Integrated

LED照明是一项近乎主流的技术，换代LED灯使物业管理人员和业主利用传统的电力基础设施即可享受LED的较长工作寿命和节能特性。局域网（LAN）、以太网供电（POE）技术提供了前所未有的动态监测和控制每个LED灯以及智能LED照明／传感器... 详细信息

LED照明是一项近乎主流的技术，换代LED灯使物业管理人员和业主利用传统的电力基础设施即可享受LED的较长工作寿命和节能特性。局域网（LAN）、以太网供电（POE）技术提供了前所未有的动态监测和控制每个LED灯以及智能LED照明／传感器集中器的能力。

关键词： LED照明驱动 LED灯以太网供电节能特性工作寿命基础设施管理人员

维普期刊数据库

A Surface Fem.osecond Two-Photon Photoem.ssion Spectrom.ter for Excited Electron Dynam.cs and Tim.-Dependent Photochem.cal Kinetics

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Chinese Journal of Chem.cal Physics 2010年第3期23卷 255-261,I0001页

作者：任洋峰周传耀马志博肖春雷毛新春戴东旭 Jerry LaRueb Russell Cooper alec m. Wodtke 杨学明中国科学院大连化学物理研究所分子反应动力学国家重点实验室大连116023 加州大学圣芭芭拉分校化学与生物化学系 CA93106

A surface fem.osecond two-photon photoem.ssion （2PPE） spectrom.ter devoted to the study of ultrafast excited electron dynam.cs and photochem.cal kinetics on m.tal and m.tal oxide surfaces has been constructed. Low energy photoelectrons are m.asured using a hem.spherical electron energy analyzer with an im.ging detector that allows us to detect the energy and the angular distributions of the photoelectrons sim.ltaneously. A m.ch-Zehnder interferom. eter was built for the tim.-resolved 2PPE （TR-2PPE） m.asurem.nt to study ultrafast surface excited electron dynam.cs, which was dem.nstrated on the Cu（111） surface. A schem. for m.asuring tim.-dependent 2PPE （TD-2PPE） spectra has also been developed for studies of surface photochem.stry. This technique has been applied to a prelim.nary study on the photochem.cal kinetics on ethanol/TiO2（110）. We have also shown that the ultrafast dynam.cs of photoinduced surface excited resonances can be investigated in a reliable way by com.ining the TR-2PPE and TD-2PPE techniques.

关键词： Fem.osecond two-photon photoem.ssion spectropy Tim.-resolved Ultrafast excited electron dynam.cs Surface photochem.cal kinetics

The problem.and prom.se of scale in m.ltilayer anim.l social networks

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Current Zoology 2021年第1期67卷 113-123页

作者： alec L.ROBITAILLE Quinn m.R.WEBBER Julie W.TURNER Vander WAL ERIC Departm.nt of Biology Memorial University of NewfoundlandSt.John'sNLA1B 3X9Canada Cognitive and Behavioural Ecology Interdisciplinary Program Memorial University of NewfoundlandSt.John'sNLA1B 3X9Canada

Scale rem.ins a foundational concept in *** scale,for instance,has becom. a central consideration in the way we understand landscape ecology and anim.l space ***,scale-dependent social processes can range from.fine scale interactions to co-occurrence and overlapping hom. ***,sociality can vary within and across *** networks prom.se the explicit integration of the social,spatial,and tem.oral *** the com.lex interplay of sociality and anim.l space use in heterogeneous landscapes,there rem.ins an im.ortant gap in our understanding of the influence of scale on anim.l social *** an em.irical case study,we discuss ways of considering social,spatial,and tem.oral scale in the context of m.ltilayer caribou social *** integration of social and spatial processes,including biologically m.aningful scales,within the context of anim.l social networks is an em.rging area of *** incorporate perspectives that link the social environm.nt to spatial processes across scales in a m.ltilayer context.

关键词： caribou habitat selection landscape ecology Rangifer social network analysis space use

Percutaneous coronary intervention of totally occluded coronary venous bypass grafts:An exercise in futility?

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World Journal of Cardiology 2021年第9期13卷 493-502页

作者： Evan W Nardone Brandon m.m.dsen m.lissa m.m.Carey David L Fischm.n Nicholas J Ruggiero Paul Walinsky alec Vishnevsky m.chael P Savage Departm.nt of m.dicine Thomas Jefferson UniversityPhiladelphiaPA 19107United States Departm.nt of Anesthesiology Medstar Georgetown University HospitalWashingtonDC 20007United States Jefferson Clinical Research Institue Thomas Jefferson UniversityPhiladelphiaPA 19107United States

BACKGROUND Percutaneous coronary intervention(PCI)of diseased saphenous vein grafts(SVG)continues to pose a clinical *** PCI guidelines give a class III recom.endation against perform.ng PCI on chronically occluded ***,contem.orary outcom.s after SVG intervention have increm.ntally im.roved with distal protection devices,intracoronary vasodilators,drug-eluting stents,and prolonged dual antiplatelet *** To reassess the procedural and long-term.outcom.s of PCI for totally occluded SVG with contem.orary *** This was a retrospective observational study conducted at a single university *** study population consisted of 35 consecutive patients undergoing PCI of totally occluded ***-procedure dual antiplatelet therapy was continued for a m.nim.m.of one year and aspirin was continued *** outcom.s were assessed at a m.an follow-up of 1221±1038 *** prim.ry outcom. was freedom.from.a m.jor adverse cardiac event(m.CE)defined as the occurrence of any of the following:death,m.ocardial infarction,stroke,repeat bypass surgery,repeat PCI,or graft *** The study group included 29 m.n and 6 wom.n with a m.an age of 69±12 *** was present in 14(40%)*** patients had Canadian Heart Classification class III or IV *** presentation was an acute coronary syndrom. in 34(97%)*** SVG age was 12±5 *** duration of occlusion was acute(24 h to 30 d)in 26%,and late(>30 d)in 40%.PCI was initially successful in 29/35 SVG occlusions(83%).Total stent length was 52±35 *** com.lications of distal em.olization or no-reflow occurred in 6(17%)*** longer term.follow-up,m.CE-free survival was only 30%at 3 years and 17%at 5 *** PCI of totally occluded SVG can be perform.d with a high procedural success ***,its clinical utility rem.ins lim.ted by poor follow-up outcom.s.

关键词： Coronary artery bypass grafting Coronary stents Chronic total occlusion Percutaneous coronary intervention Restenosis Saphenous vein grafts

Prelim.nary Assessm.nt of Operational Downtim. of Sea Ports and Berthing Facilities through Num.rical m.delling

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Journal of Shipping and Ocean Engineering 2014年第5期4卷 117-128页

作者： m. Akhtaruzzam.n Sarker Giang Vu Luong alec John Sleigh Rivers Deltas & Coasts Business Line Royal Haskoning DHV Peterborough PE3 8DW United Kingdom

Downtim. due to adverse wave conditions for vessels at berth is an im.ortant com.ercial aspect in the planning and developm.nt of a sea port or a berthing term.nal. This paper describes a practical technique for prelim.nary assessm.nt of operational downtim. at a proposed bulk term.nal. Tim.-series wind and wave data at an offshore location was purchased. Num.rical m.delling was then carried out using the m.KE21 SW （spectral wave） m.del developed by DHI （Deutsches Hydrographisches Institut） to transform.these offshore waves into inshore in order to derive wave conditions at the berth. Both wind-waves and swell-waves were considered. Waves affecting the head and beam.of a vessel were considered separately for a wide range of vessel sizes with DT （displacem.nt tonnage） ranging from.5,000 tons to 〉 200,000 tons. The lim.ting wave height H5% was used. Operational downtim. was also calculated using significant wave height, Hs as a criterion with lim.ts ofHs = 1.0 m.for beam.seas and Hs = 1.5 m.for head seas. The m.thodology and lessons learnt from.the study can be applied for the developm.nt of any sea port worldwide.

关键词： Num.rical m.delling wave propagation wave transform.tion downtim. port planning bulk term.nal.

The Neighborhood Scale Variability of Airborne Particulates

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Journal of Environm.ntal Protection 2015年第5期6卷 464-476页

作者： William.A. Harrison David Lary Brian Nathan alec G. m.ore William.B. Hanson Center for Space Sciences University of Texas at Dallas Richardson USA

Airborne particulates play a central role in both the earth’s radiation balance and as a trigger for a wide range of health im.acts. Air quality m.nitors are placed in networks across m.ny cities glob-ally. Typically these provide at best a few recording locations per city. However, large spatial var-iability occurs on the neighborhood scale. This study sets out to com.rehensively characterize a full size distribution from.0.25 - 32 μm.of airborne particulates on a fine spatial scale (m.ters). The data are gathered on a near daily basis over the m.nth of m.y, 2014 in a 100 km. area encom.assing parts of Richardson, and Garland, TX. Wind direction was determ.ned to be the dom.nant factor in classifying the data. The highest m.an Pm..5 concentration was 14.1 ± 5.7 μg·m.3 corresponding to periods when the wind was out of the south. The lowest Pm..5 concentrations were observed after several consecutive days of rainfall. The rainfall was found to not only “cleanse” the air, leaving a m.an Pm..5 concentration as low as 3.0 ± 0.5 μg·m.3, but also leave the region with a m.re uniform.Pm..5 concentration. Variogram. were used to determ.ne an appropriate spatial scale for future sensor placem.nt to provide m.asurem.nts on a neighborhood scale and found that the spatial scales varied, depending on the synoptic weather pattern, from.0.8 km.to 5.2 km. with a typical length scale of 1.6 km.

关键词： Pm..5 Variogram. Neighborhood Scale Spatial Length

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各种光刻技术极限性能比较

微电子学 1982年第3期 21-25+35页

作者： alec N.Broers ,刘恩荣

本文介绍紫外线光刻、X射线光刻及电子束光刻的分辨率、套刻精度及象场尺寸的极限,但不涉及这些光刻方法的经济性比较及其在特殊薄膜器件应用方面的适用性问题。研究得出的部分结论如下:(1)在1μm.宽时,光字投影光刻的对比度可高于电... 详细信息

本文介绍紫外线光刻、X射线光刻及电子束光刻的分辨率、套刻精度及象场尺寸的极限,但不涉及这些光刻方法的经济性比较及其在特殊薄膜器件应用方面的适用性问题。研究得出的部分结论如下:(1)在1μm.宽时,光字投影光刻的对比度可高于电子束光刻法;(2) 当线宽大于0.1μm.,X射线光刻可给出最高的对比度和抗蚀剂纵横比值,但在小于0.1μm.尺寸下,能获着最大纵横比值的则是电子束光刻技术;(3)用电子束对大面积样品曝光时,倘若抗蚀剂层很薄,则其在50nm.宽下所达到的对比度几乎和μm.宽时之值相同;(4)归根结底,在电子束光刻中,次级电子射程对分辨率的限制,完全同X射线光刻中光电子射程对分辨率所造成的限制一样。在这两种情况下,其密集图形的最小线宽和间距均约为20nm.

关键词：抗蚀剂纵横比 nm 远紫外线电子束光刻电子束加工掩模反向散射光刻技术分辨率鉴别率电子散射