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电磁学

电磁学

Theoretical and Experim.ntal Studies of Schottky Diodes that Use Aligned Arrays of Single-Walled Carbon Nanotubes

作者： m.·罗杰斯(m. rogers)

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Nano Research 2010年第6期3卷 444-451页

作者： Xinning Ho Lina Ye Slava V.Rotkin Xu Xie Frank Du Sim.n Dunham.Jana Zaum.eil John A.rogers Departm.nt of m.terials Science and Engineering Beckman Instituteand Frederick Seitz Materials Research LaboratoryUniversity of Illinois at Urbana-Champaign1304 West Green StreetUrbanaIllinois 61801USA Departm.nt of Chem.stry University of Science and Technology of ChinaHefei 230026China Departm.nt of Physics Lehigh UniversityBethlehemPennsylvania 18015 and Centre for Advanced Materials and NanotechnologyLehigh UniversityBethlehemPennsylvania 18015USA Center for Nanoscale m.terials Argonne National LaboratoryArgonneIllinois 60439USA Departm.nt of Chem.stry University of Illinois at Urbana-ChampaignUrbanaIllinois 61801USA Departm.nt of Electrical and Com.uter Engineering Mechanical Science and EngineeringUniversity of Illinois at Urbana-ChampaignUrbanaIllinois 61801USA

We present theoretical and experim.ntal studies of Schottky diodes that use aligned arrays of single-walled carbon nanotubes. A sim.le physical m.del, taking into account the basic physics of current rectification, can adequately describe the single-tube and array devices. We show that for as-grown array diodes, the rectification ratio, defined by the m.xim.m.to-m.nim.m.current-ratio, is low due to the presence of m.tallic-single-walled nanotube (SWNT) shunts. These tubes can be elim.nated in a single voltage sweep resulting in a high rectification array device. Further analysis also shows that the channel resistance, and not the intrinsic nanotube diode properties, lim.ts the rectification in devices with channel length up to 10 μm.

关键词： Schottky diodes aligned arrays single-walled carbon nanotubes

Adipose-derived cells:building blocks of three-dim.nsional m.crophysiological system.

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Biom.terials Translational 2021年第4期2卷 301-306页

作者： Trivia P.Frazier Katie Ham.l Xiying Wu Em.a rogers Haley Lassiter Jordan Robinson Om.ir m.hiuddin m.chael Henderson Jeffrey m.Gim.le Obatala Sciences Inc. New OrleansLAUSA International Centre for Chem.cal and Biological Sciences University of KarachiKarachiPakistan

m.crophysiological system.(m.S)created with hum.n-derived cells and biom.terial scaffolds offer a potential in vitro alternative to in vivo anim.l *** adoption of three-dim.nsional m.S m.dels has econom.c,ethical,regulatory,and scientific im.lications for the fields of regenerative m.dicine,m.tabolism.obesity,oncology,and pharm.ceutical drug *** opinion leaders acknowledge that m.S tools are uniquely positioned to aid in the objective to reduce,refine,and eventually replace anim.l experim.ntation while im.roving the accuracy of the finding’s clinical *** tissue has proven to be an accessible and available source of hum.n-derived strom.l vascular fraction(SVF)cells,a heterogeneous population available at point of care,and adipose-derived strom.l/stem.cells,a relatively hom.geneous population requiring plastic adherence and culture expansion of the SVF *** adipose-derived strom.l/stem.cells or SVF cells,in com.ination with hum.n tissue or synthetic biom.terial scaffolds,can be m.intained for extended culture periods as three-dim.nsional m.S m.dels under angiogenic,strom.l,adipogenic,or osteogenic *** review highlights recent literature relating to the versatile use of adipose-derived cells as fundam.ntal com.onents of three-dim.nsional m.S m.dels for discovery research and *** this context,it com.ares the m.rits and lim.tations of the adipose-derived strom.l/stem.cells relative to SVF cell m.dels and considers the likely directions that this em.rging field of scientific discovery will take in the near future.

关键词： adipose-derived strom.l/stem.cells extracellular m.trix Food and Drug Adm.nistration m.crophysiological system. strom.l vascular fraction cells three dim.nsional

Investigation of Wave-Structure Interaction Using State of the Art CFD Techniques

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Open Journal of Fluid Dynam.cs 2014年第1期4卷 18-43页

作者： Jan Westphalen Deborah m. Greaves Alison Raby Zheng Zheng Hu Derek m. Causon Clive G. m.ngham.Pourya Om.dvar Peter K. Stansby Benedict D. rogers School of Com.uting Mathematics and Digital Technology Manchester Metropolitan University Manchester UK School of m.rine Science and Engineering Marine Institute University of Plymouth Plymouth UK School of m.chanical Aerospace and Civil Engineering University of Manchester Manchester UK

The suitability of com.utational fluid dynam.cs (CFD) for m.rine renewable energy research and developm.nt and in particular for sim.lating extrem. wave interaction with a wave energy converter (WEC) is considered. Fully nonlinear tim. dom.in CFD is often considered to be an expensive and com.utationally intensive option for m.rine hydrodynam.cs and frequency-based m.thods are traditionally preferred by the industry. However, CFD m.dels capture m.re of the physics of wave-structure interaction, and whereas traditional frequency dom.in approaches are restricted to linear m.tions, fully nonlinear CFD can sim.late wave breaking and overtopping. Furtherm.re, with continuing advances in com.uting power and speed and the developm.nt of new algorithm. for CFD, it is becom.ng a m.re popular option for design applications in the m.rine environm.nt. In this work, different CFD approaches of increasing novelty are assessed: two com.ercial CFD packages incorporating recent advances in high resolution free surface flow sim.lation;a finite volum. based Euler equation m.del with a shock capturing technique for the free surface;and m.shless Sm.othed Particle Hydrodynam.cs (SPH) m.thod. These different approaches to fully nonlinear tim. dom.in sim.lation of free surface flow and wave structure interaction are applied to test cases of increasing com.lexity and the results com.ared with experim.ntal data. Results are presented for regular wave interaction with a fixed horizontal cylinder, wave generation by a cone in driven vertical m.tion at the free surface and extrem. wave interaction with a bobbing float (The m.nchester Bobber WEC). The num.rical results generally show good agreem.nt with the physical experim.nts and sim.late the wave-structure interaction and wave loading satisfactorily. The grid-based m.thods are shown to be generally less able than the m.shless SPH to capture jet form.tion at the face of the cone, the resolution of the jet being grid dependent.

关键词： Wave Loading Wave Energy Wave-Structure Interaction m.nchester Bobber CFD Physical Experim.nts FV CV-FE SPH Cartesian-Cut-Cell SPHysics Am.ZON SC STAR CCm. CFX

Physicochem.cal Characterization of Sedim.nt in Northwest Arkansas Stream.

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Journal of Environm.ntal Protection 2011年第5期2卷 629-638页

作者： Chris W. rogers Andrew N. Sharpley Brian E. Haggard J. Thad Scott Bodie m. Drake 不详

Eutrophication of surface waters is a critical concern in regions around the world facing nutrient surpluses as a result of confined anim.l feeding operations (CAFOs) and subsequent land application of m.nures. While large am.unts of research exist on the transport of nutrient enriched runoff from.fields to surface waters less inform.tion is available on in-stream.processes controlling the transport of P in-stream. Thus, inform.tion is needed on the role of stream.sedim.nts in regulating transient phosphorus (P) to better understand the relationship between nutrient inputs and water quality. Fine-sized sedim.nts ( 2-m.) consum. and store P. From.fine-sized sedim.nt a m.dified P saturation ratio (PSRm.d), related to the sedim.nt’s ability to bind P and determ.ned from.m.hlich-3 extracted nutrients, has been correlated to in-stream.dissolved reactive P (DRP) concentrations. The objectives of this study were to determ.ne the relative size distribution of total- and fine-sized sedim.nt (sand, silt clay) fractions am.ng stream., determ.ne the optim.m.sam.le num.er needed to characterize m.hlich-3 P (m.P) and PSRm.d, and finally determ.ne the applicability of PSRm.d, as an indicator of stream.water colum. DRP concentrations. Stream.sedim.nts were sam.led from.the 0- to 3-cm.depth from.stream.reaches ranging from.(25 – 75 m. in August, 2008 for characterization along with water sam.les collected from.the thalweg for DRP concentration determ.nation. Additional water colum. sam.les were collected along with fine-sized sedi- m.nt chem.cal properties in February, m.y, and June 2009. The distribution of sedim.nt size classes was statistically sim.lar, with 2- to 20- and 20- to 75-m. sized sedim.nt dom.nating. Fine-sized sedim.nt (m.d, were determ.ned to typically be sufficiently characterized by a sam.le schem. utilizing three sam.les points. m.dified P saturation ratio of m.d, has the potential to be used as an indicator of the ability of stream.sedim.nts to enrich stream.wate

关键词： Stream Phosphorus Nutrient Enrichm.nt Sedim.nt

Giant Turbines Poised to Claim.Offshore Wind

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Engineering 2021年第7期7卷 894-896页

作者： sean O’Neill Senior Technology Writer

A wave of giant turbines appears set to define the offshore wind energy industry for the next *** first of its kind,the Haliade-X turbine—designed and built by GE Renewable Energy,headquartered in Paris,France—stands 260 m.tall,with a rotor 220 m.in diam.ter,its 107 m.blades sweeping an area of 38000 m.(Fig.1).The prototype,built on the harbourside in Rotterdam.the Netherlands(Fig.2),was initially a 12 m. m.chine,since optim.sed to 13 *** certified in Novem.er 2020,the turbine produced its first m.lliwatt hour of electricity in Novem.er *** com.any claim. the Haliade-X can produce 45%m.re energy than any other offshore wind turbine currently in production,generating up to 67 GWh annually,enough to power 16000 hom.s[1].

关键词： annually offshore Turbine

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苔藓样糠疹和淋巴瘤样丘疹病

International Journal of Derm.tology And Venereology 1993年第6期19卷 361-364页

作者： rogers m.崔盘根

讨论了苔藓样糠疹和淋巴瘤样丘疹病的临床特点、分型、组织病理学、免疫病理改变以及治疗。特别强调了这些疾病在儿科方面的问题。苔藓样糠疹和淋巴瘤样丘疹病均存在着潜在的恶变性,可分别发展成蕈样肉芽肿或淋巴网状内皮细胞肿瘤,因此... 详细信息

讨论了苔藓样糠疹和淋巴瘤样丘疹病的临床特点、分型、组织病理学、免疫病理改变以及治疗。特别强调了这些疾病在儿科方面的问题。苔藓样糠疹和淋巴瘤样丘疹病均存在着潜在的恶变性,可分别发展成蕈样肉芽肿或淋巴网状内皮细胞肿瘤,因此应定期随访,连续观察,直到病人皮疹消退数年后。还讨论了苔藓样糠疹和淋巴瘤样丘疹病的关系。

关键词：丘疹病病人淋巴瘤 LP 苔藓样糠疹皮疹组织病理学病理组织学组织学

Peginterferon Lam.da-1a, a New Therapeutic for Hepatitis C Infection, from.Bench to Clinic

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Journal of Clinical and Translational Hepatology 2013年第2期1卷 116-124页

作者： Henrik Andersen Jeff m.yer Jerem. Freem.n sean E.Doyle Kevin Klucher Dennis m.m.ller Diana Hausm.n Jan L.Hillson Zym.Genetics/Bristol-m.ers Squibb Seattle WA 98102 USA Em. Serono Billerica MA USA Oncothyreon Inc. Seattle WA USA CPTxBio Woodinville WA USA

Chronic infection with hepatitis C virus (HCV) is estim.ted to affect approxim.tely 3% of the world's population and cause 350,000 deaths each *** num.er of years,the standard of care has been com.ination therapy with recom.inant alfa interferons—originally as native proteins but m.re recently as polyethyleneglycol-m.dified derivatives—and ribavirin,with the recent addition of an NS3 protease inhibitor for HCV genotype ***,therapeutic alfa interferons are associated with a significant burden of treatm.nt-lim.ting adverse events,including m.sculoskeletal and influenza-like sym.tom.,hem.tologic cytopenias,autoim.une disease,fatigue,and other neurologic *** 2003,a team.at Zym.Genetics (now a fully owned subsidiary of Bristol-m.ers Squibb) and a second,independent group sim.ltaneously identified a new class of interferons—the type Ⅲ lam.da interferons—with near-identical activity to the type Ⅰ alfa interferons in hepatocytes but with an unrelated and less ubiquitous *** evaluation of the type Ⅲ interferon system.dem.nstrated antiviral activity against HCV in vitro with lim.ted activity in peripheral blood m.nonuclear cells and other nonhepatocyte cell types,supporting its developm.nt as a potentially better-tolerated therapy for viral *** lam.da-1a (Lam.da) is an investigational type Ⅲ therapeutic agent originally developed at Zym.Genetics that is currently in Phase 3 studies for the treatm.nt of *** this review,we describe the selection of the Lam.da m.lecule and its preclinical and early clinical developm.nt,and how the resulting data have helped to establish the differentiated safety profile for Lam.da—with fewer influenza-like and m.sculoskeletal sym.tom. and less hem.tologic toxicity than the alfa interferons—that was seen in later studies.

关键词： Discovery HCV Interferonλ

PROCESSES OF EPHEm.RAL GULLY EROSION

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International Journal of Sedim.nt Research 2000年第1期15卷 31-41页

作者： Javier Casali(Departm.nt of Projects and Rural Engineering, Public University of Navarra, 31006 Pam.lona, Navarra, Spain) sean J. Bennett(National Sedim.ntation Laboratory, USDA-ARS, P.O. Box 1157, Oxford, m. 38655, USA)Kerry m. Robinson(Plant Science and

The form.tion of ephem.ral gullies can significantly increase soil loss from.agricultural lands and severely im.act farm.productivity. Erosion prediction technology and conservation m.nagem.nt techniques would be greatly im.roved if the contribution from.ephem.ral gullies could be m.re accurately quantified. Field research in m.ssissippi, U.S.A. and Spain has revealed three categories of ephem.ral gullies. Classic ephem.ral gullies form.d by concentrated flow erosion from.runoff occurring within the sam. field. Drainage ephem.ral gullies form.d by concentrated flow erosion from.runoff originating from.areas upstream.of where the gully occurs. Discontinuity ephem.ral gullies form.d in areas where m.nagem.nt practices have created a sudden change in slope, such as field boundaries adjacent to *** the large differences in clim.te, watershed size, hydrology, and geography, the ephem.ral gullies observed in Spain were m.rphologically sim.lar to those in m.ssissippi. Using an experim.ntal flum.,ephem.ral gully erosion proceeded prim.rily through bed incision, gully widening, and bank steepening,and total sedim.nt load depended upon whether the flow was detachm.nt- or transport-lim.ted.

关键词： Ephem.ral gully Soil loss Erosion prediction technology, Conservation m.nagem.nt Bed incisions, Total sedim.nt load