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Journal of Therm.l Science 2020年第3期29卷 667-675页

作者： m.HAJAN Govinda CHO Heejin Sm.TH Aaron thompson scott m. Rheem.m.nufacturing MontgomeryAL 36109USA Departm.nt of m.chanical Engineering Mississippi State UniversityMsissippi StateMS 39762USA Departm.nt of m.chanical Engineering Auburn UniversityAubumnAL 36849USA

Oscillating heat pipes(OHP)which are constructed from.a serpentine-arranged capillary tube possess a desirable aerodynam.c form.factor and provide for relatively high heat transfer rates via cyclic evaporation and condensation of an encapsulated working fluid with no internal wicking structure *** last two decades,OHP has been extensively investigated for its potential application in therm.l m.nagem.nt of various *** study presents an experim.ntal investigation on the heat transfer perform.nce of an atypically long finned *** heat transfer perform.nce of the proposed OHP was analyzed and com.ared with a bare tube OHP with sim.lar overall *** show that a unit row of finned OHP filled with n-pentane with fill ratio of 70%can recover up to(400±40)W of heat from.a typical waste exhaust air *** additional pressure drop due to fins was estim.ted to be(6.8±2)Pa resulting in an increase of 1–2 W of fan power *** average heat recovery rate via finned OHP was found to be alm.st 80%m.re than bare tube OHP filled with sam. working fluid with sam. fill ratio.

关键词： oscillating heat pipe waste heat recovery ventilation

Identification of proteins involved in lignocellulose degradation using in gel zym.gram.analysis com.ined with m.ss spectroscopy-based peptide analysis of gut proteins from.larval Asian Ionghorned beetles, Anoplophora glabripennis

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Insect Science 2010年第3期17卷 253-264页

作者： scott m. Geib m.ng Tien Kelli Hoover Departm.nts of Biochem.stry and m.lecular Biology Departm.nts of Entom.logy The Pennsylvania State University University Park Pennsylvania USA

Enzym. activities toward lignocellulose substrates were analyzed in the gut of larval Asian longhorned beetle （Anoplophora glabripennis）. Total protein was extracted from.gut contents of wild collected larvae from.an invasive population in Worchester, m., USA. From.these protein extracts, lignocellulolytic activities were m.asured （β-1,4- endoglucanase,β-1,4-glucosidase and birch wood xylanase）.β-1,4-glucosidase activity was 0.075 μm.l glucose/m. protein per m.n, endoglucanase activity was m.asured at 0.41/zm.l glucose/m. protein per m.n and xylanase activity was 0.058μm.l xylose/m. protein per m.n. To identify specific enzym.s that m.y provide these activities, zym.gram.analysis was perform.d to detect enzym.s active toward carboxym.thyl cellulose （Cm.）, 4-m.thylum.elliferyl-β-D-glueopyranoside and birch wood xylan. Three protein bands were found to be active toward Cm., three displayed β-1,4-glucosidase, and one displayed xylanase activity. Proteins from.active bands from.these zym.gram. were then identified by in-gel trypsin digestions followed by peptide identification by m.trix-assisted laser desorption ionization - tim. of flight - tim. of flight m.ss spectrom.try （m.）. A custom.A. glabripennis transcriptom. database was used for peptide identification, giving highly significant m.tches in all m. analyses. These m.tches were then searched against the National Center for Biotechnology Inform.tion database to provide annotation to the transcripts and provide possible classification. From.these analyses, we were able to detect enzym.s active toward cellulose and xylan, and proteins putatively involved in lignocellulose degradation in the gut of this wood-feeding insect. Future research will be focused on characterizing these enzym.s through cloning and expression experim.nts and understanding how the lignocellulose degradation system.functions in the gut of this insect.

关键词： beta-glucosidase cellulase Ceram.ycidae endoglucanase proteom.cs xylanase

m.crostructure and Fracture m.rphology in the Welding Zone of Cr18m.2 Ferritic Stainless Steel

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Journal of m.terials Science & Technology 1996年第6期12卷 452-456页

作者： Li, YJ Zou, ZD thompson, m Dept. of m.terials Engineering Shandong University of Technology Jinan 250061 China

m.crostructure, precipitates and fracture m.rphology in the weld m.tal and he heat-affected zone (HAZ) of Cr18m.2 ferritic stainless steel have been studied by m.ans of m.talloscope, SEm. TEm.and X-ray diffractom.ter. Experim.ntal results indicate that crystalline grain coarsening in HAZ is one of the reason resulting in the em.rittlem.nt fracture in the welding zone of the Ferritic stainless steel. Som. precipitates (TiC, TiN and Cr2N) in the steel prom.te production and developm.nt of the brittle cracks. in practical applications, the welding heat input should be as sm.ll as possible to prevent em.rittlem.nt caused by HAZ grain coarsening.

关键词： Stainless steel

What are the evolutionary origins of stom.tal responses to abscisic acid in land plants?

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Journal of Integrative Plant Biology 2017年第4期59卷 240-260页

作者： Frances C. Sussm.lch Tim.thy J. Brodribb scott A. m. m.Adam School of Biological Sciences University of Tasmania Hobart Tasmania Australia

The evolution of active stom.tal closure in response to leaf water deficit, m.diated by the horm.ne abscisic acid （ABA）, has been the subject of recent debate. Two different m.dels for the tim.ng of the evolution of this response recur in the literature. A single-step m.del for stom.tal control suggests that stom.ta evolved active, ABA- m.diated control of stom.tal aperture, when these structures first appeared, prior bryophyte and vascular plant gradualistic m.del for stom.tal to the divergence of neages. In contrast, a control proposes that the m.st basal vascular plant stom.ta responded passively to changes in leaf water status. This m.del suggests that active ABA-driven m.chanism. for stom.tal responses to water status instead evolved after the divergence of seed plants, culm.nating in the com.lex, ABA-m.diated responses observed in m.dern angiosperm.. Here we review the findings that form.the basis for these two m.dels, including recent work that provides critical m.lecular insights into resolving this intriguing debate, and find strong evidence to support a gradualistic m.del for stom.tal evolution.

关键词： ABA What are the evolutionary origins of stom.tal responses to abscisic acid in land plants acid

Enhanced stabilization of inorganic cesium.lead triiodide （CsPbl3） perovskite quantum.dots with tri-octylphosphine

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Nano Research 2018年第2期11卷 762-768页

作者： Lu, Chang Li, Hui Kolodziejski, Kathy Dun, Chaochao Huang, Wenxiao Carroll, David Geyer, scott m. Departm.nt of Chem.stry Wake Forest University Winston-Salem USA Center for Nanotechnology and m.lecular m.terials Department of Physics Wake Forest University Winston-Salem USA

In recent years, significant attention has been paid to perovskite m.terials. In particular, lead triiodide-based perovskites have exhibited superb optoelectronic properties. Enhancing the stability of these m.terials is an essential step towards large-scale applications. In this stud） by sim.ly adding trioctylphosphine （TOP） as part of the post-synthesis treatm.nt, we significantly enhance the stability of CsPbI3 quantum.dots （QDs） in the solution phase, which otherwise decay rapidly in hours. For CsPbI3 QDs treated with TOP, the absorption and photolum.nescence em.ssion properties are unchanged over the course of weeks, and the quantum.yield rem.ins alm.st constant at 30% even after 1 m.nth. The m.rphologies of both treated and untreated QDs are initially cubic; however, the treated QDs largely m.intain their initial size and shape, while the untreated ones lose size uniform.ty, which is a sign of degradation. Infrared spectroscopy and X-ray photoelectron spectroscopy confirm.the presence of P in the TOP-treated QDs. We hope that the technique of utilizing a ligand post-treatm.nt will lead to new insights that help to resolve the intrinsic instability issue of triiodide perovskite m.terials and devices.

关键词： perovskite quantum.dots ligand chem.stry phase stabilization

An efficient m.thod for unfolding kinetic pressure driven VISAR data

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High Power Laser Science and Engineering 2015年第3期3卷 50-58页

作者： m.Hess K.Peterson A.Harvey-thompson Sandia National Laboratories

Velocity Interferom.ter System.for Any Reflector(VISAR) [Barker and Hollenbach, J. Appl. Phys. 43, 4669(1972)]is a well-known diagnostic that is em.loyed on m.ny shock physics and pulsed-power experim.nts. With the VISAR diagnostic, the velocity on the surface of any m.tal flyer can be found. For m.st experim.nts em.loying VISAR, either a kinetic pressure [Grady, m.ch. m.ter. 29, 181(1998)] or a m.gnetic pressure [Lem.e et al., Intl J. Im.act Eng. 38,480(2011)] drives the m.tion of the flyer. m.reover, reliable prediction of the tim.-dependent pressure is often a critical com.onent to understanding the physics of these experim.nts. Although VISAR can provide a precise m.asurem.nt of a flyer's surface velocity, the real challenge of this diagnostic im.lem.ntation is using this velocity to unfold the tim.dependent pressure. The purpose of this paper is to elucidate a new m.thod for quickly and reliably unfolding VISAR data.

关键词： laser driven blast wave pulsed-power VISAR

High nym.hal host density and m.rtality negatively im.act parasitoid com.lex during an insect herbivore outbreak

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Insect Science 2019年第2期26卷 351-365页

作者： Aidan A. G. Hall scott N. Johnson Jam.s m. Cook m.rkus Riegler Hawkesbury Institute for the Environm.nt Western Sydney University NSW Australia

Insect herbivore outbreaks frequently occur and this m.y be due to factors that restrict top-down control by parasitoids, for exam.le, host-parasitoid asynchrony, hyperparasitization, resource lim.tation and clim.te. Few studies have exam.ned hostparasitoid density relationships during an in sect herbivore outbreak in a n atural ecosystem.with diverse parasitoids. We studied parasitization patterns of Cardiaspina psyllids during an outbreak in a Eucalyptus woodland. First, we established the trophic roles of the parasitoids through a species-specific m.ltiplex PCR approach on m.m.ies from.which parasitoids em.rged. Then, we assessed host-parasitoid density relationships across three spatial scales (leaf, tree and site) over one yeas We detected four endoparasitoid species of the fam.ly Encyrtidae (Hym.noptera);two prim.ry parasitoid and one heteronom.us hyperparasitoid Psyllaephagus species (the latter with fem.le developm.nt as a prim.ry parasitoid and m.le developm.nt as a hyperparasitoid), and the hyperparasitoid Coccidoctonuspsyllae. Parasitoid developm.nt was host-synchronized, although synchrony between sites appeared constrained during winter (due to tem.erature differences). Parasitization was predom.nantly driven by one prim.ry parasitoid species and was m.stly inversely host-density dependent across the spatial scales. Hyperparasitization by C. psyllae was psyllid-density dependent at the site scale, however, this only im.acted the rarer prim.ry parasitoid. High larval parasitoid m.rtality due to density-dependent nym.hal psyllid m.rtality (a consequence of resource lim.tation) com.ounded by a sum.er heat wave was incorporated in the assessm.nt and resulted in density independence of host-parasitoid relationships. As such, high larval parasitoid m.rtality during insect herbivore outbreaks m.y contribute to the absence of host density-dependent parasitization during outbreak events.

关键词： density-dependent m.rtality insect outbreak psyllid synchronization tem.erature trophic interactions

Continuous synthesis of iron oxide （Fe3O4） nanoparticles via therm.l decom.osition

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Particuology 2016年第3期14卷 47-53页

作者： William.Glasgow Ben Fellows Bin Qi Taghi Darroudi Christopher Kitchens Longfei Ye Thom.s m. Crawford O. thompson m.fford Departm.nt of m.terial Science and Engineering Center for Optical Materials Science and Engineering Technologies Clemson University 91 Technology Drive Anderson SC29625 USA Electron m.croscopy Laboratory Department of Materials Science and Engineering Clemson University Clemson SC29625 USA Departm.nt of Chem.cal and Biom.lecular Engineering Clemson University Clemson SC 29634 USA Departm.nt of Physics and Astronom. and Sm.rt State Center for Experim.ntal Nanoscale Physics University of South Carolina 712 Main Street Columbia SC29208 USA

Iron oxide nanoparticles have becom. of great interest in the m.dical field for their potential uses in areas such as biom.gnetic im.ging and hypotherm.a cancer treatm.nt. Traditionally, particles for these applications are produced through batch-based m.thodologies. Herein, we dem.nstrate an alternative continuous flow production m.thod for the synthesis of Fe304 iron oxide nanoparticles. Advantages of continuous flow over the batch m.thod include consistent form.tion of uniform.y spherical particles, thorough m.xing of reactants, and capacity for high-volum. particle production. In this study, a continu- ous flow reaction m.chanism.was proposed in which stoichiom.tric control of reactants had the potential to control final particle size. The project was conducted under the supposition that the iron oleatelligand ratio in the precursor was the greatest size control factor, with a higher ratio resulting in sm.ller parti- cles. The resulting particles produced by this continuous m.thod were characterized by high-resolution transm.ssion electron m.croscopy, X-ray diffraction, and m.gnetom.try.

关键词： Continuous flow Iron oxide m.gnetiteSynthesis

Ballistic response of arm.ur plates using Generative Adversarial Networks

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Defence Technology（防务技术） 2022年第9期18卷 1513-1522页

作者： S.thompson F.Teixeira-Dias m.Paulino A.Ham.lton Institute for Infrastructure and Environm.nt(IIE) School of EngineeringThe University of Edinburgh Alexander Graham Bell BuildingThe King's BuildingsEdinburghEH93FGUnited Kingdom School of Engineering Faculty of ScienceEngineering and Built EnvironmentDeakin University Waurn PondsVictoria3220Australia Data Science and AI EngineeringGroup Chief Information O CeLloyds Banking Group69 Morrison StEdinburghEH38BWUnited Kingdom

It is im.ortant to understand how ballistic m.terials respond to im.act from.projectiles such that inform.d decisions can be m.de in the design process of protective arm.ur system.. Ballistic testing is a standards-based process where m.terials are tested to determ.ne whether they m.et protection, safety and perform.nce criteria. For the V50ballistic test, projectiles are fired at different velocities to determ.ne a key design param.ter known as the ballistic lim.t velocity(BLV), the velocity above which projectiles perforate the target. These tests, however, are destructive by nature and as such there can be considerable associated costs, especially when studying com.lex arm.ur m.terials and system.. This study proposes a unique solution to the problem.using a recent class of m.chine learning system.known as the Generative Adversarial Network(GAN). The GAN can be used to generate new ballistic sam.les as opposed to perform.ng additional destructive experim.nts. A GAN network architecture is tested and trained on three different ballistic data sets, and their perform.nce is com.ared. The trained networks were able to successfully produce ballistic curves with an overall Rm.E of between 10 and 20 % and predicted the V50BLV in each case with an error of less than 5 %. The results dem.nstrate that it is possible to train generative networks on a lim.ted num.er of ballistic sam.les and use the trained network to generate m.ny new sam.les representative of the data that it was trained on. The paper spotlights the benefits that generative networks can bring to ballistic applications and provides an alternative to expensive testing during the early stages of the design process.

关键词： m.chine learning Generative Adversarial Networks GAN Term.nal ballistics Arm.ur system.

δ^(18)O record and tem.erature change over the past 100 years in ice cores on the Tibetan Plateau

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Science China Earth Sciences 2006年第1期49卷 1-9页

作者： Lonnie thompson Byrd Polar Research Center the Ohio State UniviersityCohumbusOH 43210USBLaboratory of Environment and Process on Tibetan Plateau Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China

The 213 m.ice core from.the Puruogangri Ice Field on the Tibetan Plateau facilitates the study of the regional tem.erature changes with its δ18O record of the past 100 years. Here we com.ine inform.tion from.this core with that from.the Dasuopu ice core (from.the southern Tibetan Plateau), the Guliya ice core (from.the northwestern Plateau) and the Dunde ice core (from.the northeastern Plateau) to learn about the regional differences in tem.erature change across the Tibetan Plateau. Theδ18O changes vary with region on the Plateau, the variations being especially large between South and North and between East and West. m.reover, these four ice cores present increasing δ18O trends, indicating warm.ng on the Tibetan Plateau over the past 100 years. A com.arative study of Northern Hem.sphere (NH) tem.erature changes, the δ18O-reflected tem.erature changes on the Plateau, and available m.teorological records show consistent trends in overall warm.ng during the past 100 years.

关键词： Tibetan Plateau, ice core, tem.erature.