检索结果-南通市图书馆

Prominent cycling reversibility and k.netics enabled by CaTiO3 protective layer on Zn metal for aqueous Zn-ion batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Ch.mistry 2025年第1期100卷 245-258页

作者： Gaeun Lee Yong nam Ah. Seongjoon So Ch.nwoo Park.Jong-Seong Bae Taeh.un Park.Il Tae k.m Jaeh.un h.r Sch.ol of Ch.mical Biological and Battery Engineering Gachon University Seongnam Busan Center Korea Basic Science Institute

Aqueous Zn-ion batteries （AZIBs） h.ve received considerable attention owing to th.ir various advantages such.as safety,low cost,simple battery assembly conditions,and h.gh.ionic ***,th.y still suffer from serious problems,including uncontrollable dendrite growth.corrosion,h.drogen evolution reaction （h.R） from water decomposition,electrode passivation,and unexpected *** creation of a uniform artificial nanocrystal layer on th. Zn anode surface is a promising strategy for resolving th.se ***,we propose th. use of a perovsk.te CaTiO3（CTO） protective layer on Zn（CTO@Zn） as a promising approach.for improving th. performance of *** CTO artificial layer provides an efficient path.ay for Zn ion diffusion towards th. Zn metal because of th. h.gh.dielectric constant （εr=180） and ferroelectric ch.racteristics th.t enable th. alignment of dipole moments and redistribute th. Zn2+ions in th. CTO *** avoiding th. direct contact of th. Zn anode with.th. electrolyte solution,th. uneven dendrite growth.corrosion,parasitic side reactions,and h.R are mitigated,wh.le CTO retains its mech.nical and ch.mical robustness during ***,CTO@Zn demonstrates an improved lifespan in a symmetric cell configuration compared with.bare ***@Zn sh.ws steady overpotential （～68 m V） for 1500 h.at 1 mA cm-2/0.5 mA h.cm-2,excelling bare ***,wh.n paired with.th. V2O5-C cath.de,th. CTO@Zn//V2O5-C full battery delivers 148.4 mA h.g-1（based on th. mass of th. cath.de） after 300 *** study provides new insigh.s into Zn metal anodes and th. development of h.gh.performance AZIBs.

关键词： Artificial layer Dielectric constant Zn metal anode Zinc aqueous battery

Ph.toproduction of th. Θ^+ and its vector andaxial-vector structure

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Ch.nese Ph.sics C 2009年第12期33卷 1279-1284页

作者： h.-Ch. k.m k. Goek. T. Ledwig S. i. nam Department of Ph.sics Inha University Incheon 402-751 Republic of Korea Institut fr Th.oretisch. Ph.sik.II Ruhr-Universitt Bochum D-44780 Bochum Germany Institut fr k.rnph.sik Universitt Mainz D-55099 Mainz Germany Department of Ph.sics Chung-Yuan Christian University (CYCU)

We present recent investigations on th. vector and axial-vector transitions of th. baryon antidecuplet with.n th. framework.of th. self-consistent SU（3） ch.ral quark.soliton model, tak.ng into account th. 1/No rotational and linear mscorrections. Th. main contribution to th. electric-lik. transition form factor comes from th. wave-function corrections. Th.s is a consequence of th. generalized Ademollo-Gatto th.orem. It is also found th.t in general th. leading-order contributions are almost canceled by th. rotational 1/No corrections. Th. results are summarized as follows： th. vector and tensor k.NO coupling constants, gk.N= 0.74--0.87 and fk.N =0.53--1.16, respectively, and F→k. = 0.71 MeV, based on th. result of th. k. coupling constant gk.e =0.83. We also sh.w th. differential cross sections and beam asymmetries, based on th. present results. We also discuss th. connection of present results with.th. original work.by Diak.nov, Petrov, and Polyak.v.

关键词： Baryon antidecuplet vector and axial-vector transition form factors ch.ral quark.soliton model,Ph.toproduction of th. +

A Look.h.ad Read Cach.： Improving Read Performance for Deduplication Back.p Storage

在线全文

学校读者我要写书评

暂无评论

Journal of Computer Science & Tech.ology 2017年第1期32卷 26-40页

作者： Dongch.l Park.Ziqi Fan Young Jin nam David h. C. Du Department of Computer Science and Engineering University of Minnesota-Twin Cities Minneapolis MN 55455 U.S.A.

Data deduplication （dedupe for sh.rt） is a special data compression tech.ique. It h.s been widely adopted to save back.p time as well as storage space, particularly in back.p storage systems. Th.refore, most dedupe research.h.s primarily focused on improving dedupe write performance. h.wever, back.p storage dedupe read performance is also a crucial problem for storage recovery. Th.s paper designs a new dedupe storage read cach. for back.p applications th.t improves read performance by exploiting a special ch.racteristic： th. read sequence is th. same as th. write sequence. Consequently, for better cach. utilization, by look.ng ah.ad for future references with.n a moving window, it evicts victims from th. cach. h.ving th. smallest future access. Moreover~ to furth.r improve read cach. performance. it maintains a small log buffer to judiciously cach. future access data ch.nk.. Extensive experiments with.real-world back.p work.oads demonstrate th.t th. proposed read cach. sch.me improves read performance by up to 64.3%

关键词： deduplication dedupe read cach. back.p

Liquid-liquid extraction and separation of total rare earth.RE) metals from polymetallic manganese nodule leach.ng solution

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earth. 2015年第2期33卷 207-213页

作者： P.k.Parh. k.h.Park.C.W.nam J.T.Park Mineral Resources Research.Division Korea Institute of Geoscience & Mineral Resources (KIGAM)Daejeon 305-350 Republic of Korea Sch.ol of Applied Science and Center of Industrial Tech.ology KIIT UniversityBhubaneswar 751024 Odisha India

Th. study on th. solvent extraction for quantitative and selective separation of total rare earth.metals from th. polymetallic nodule leach.liquor was investigated. Th. typical leach.liquor bearing 0. 094 g/L total rare earth. 0. 23 g/L Mn, 0.697 g/L Cu, 0.2 g/L Fe, 0.01 g/L Co and 0.735 g/L Ni was subjected to th. removal iron content by precipitation meth.d using Ca（Oh.2 at ph.3.95, prior to solvent extraction of rare earth.metals. Th.ee different organo-ph.sph.ric acid reagents（D2Eh.A, PC88 A, Cyanex 272） were used to ascertain th.ir performances and selectivity towards th. loading of rare earth.metals in presence of oth.r base metals. Based on th. results of eq. ph.effect, th. performances of above th.ee extractants followed th. order as： D2Eh.A〉PC88A〉Cyanex 272. To ensure th. absence of extraction of base metals（Cu, Co, Ni）, th. eq. ph.of th. solution was optimized at th. level of 2.21, th.ugh.h.gh.r rare earth.metal extraction efficiency was observed at h.gh.r eq. ph.with.eith.r of th. extractants. Th. complete process flow diagram for substantial recovery of total rare earth.was developed using D2 Eh.A. Extraction isoth.rm plot was constructed at A：O=12：1, 3-stages and ph.=2.21, using 0.8 mol/L D2 Eh.A and th. predicted condition of th.s study was furth.r confirmed by 6-Cycles Counter Current Simulation（CCS） study. Th. stripping of total rare earth.from loaded organic ph.se（LO） was conducted using h.l solution. Mc-Cabe Th.ele diagram study carried out at A：O=1：5 using 4 mol/L h.l sh.wed th.t th.ee th.oretical stages were needed for quantitative stripping of total rare earth. Th. subsequent stripped solution resulted th.s led to contain total rare earth.of 5.6 g/L indicating a very h.gh.enrich.ent of total metals by solvent extraction（SX） process.

关键词： total rare earth.(RE) metals SX D2Eh.A h.l deep sea nodule

EFFECTS OF MODIFICATION OF Th. CARBIDE Ch.RACTERISTICS Th.OUGh.GRAIN BOUNDARY SERRATION ON CREEP-FATIGUE LIFE IN AUSTENITIC STAINLESS STEELS

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English.Letters) 2004年第5期17卷 632-638页

作者： k.J.k.m h.U.h.ng k.S.Min S.W.nam Dept. of Materials Science and Engineering Korea Advanced Institute of Science and Technology 373-1 Guseong-dong Yuseong-gu Deajeon 305-701 KoreaPosco Technical Research Laboratory #1 Koedong-dong Nam-gu Pohang 790-300 KoreaProcess Solution Development Team 1 LCD R&D Center AMLCD Division Device Solution Network Samsung Electronics Co. LTD.San 24 Nongseo-ri Giheung-eup Yongin Gyeonggi-do 449-771 KoreaDept. of Materials Science and Engineering Korea Advanced Institute of Science and Technology 373-1 Guseong-dong Yuseong-gu Deajeon 305-701 Korea

Modification of th. carbide ch.racteristics th.ough.th. grain boundary serration is investigated, using an AISI 316 and 304 stainless steels. In both.steels, triangular carbides were observed at straigh. grain boundaries wh.le planar carbides were observed at th. serrated grain boundaries. Th. serrated grain boundary energy is observed to be much.lower th.n th.t of th. straigh. one. Th.refore, th. carbide morph.logy is found to be ch.nged from triangular to planar along th. serrated boundary to reduce th. interfacial energy between th. carbide and th. matrix. Th. creep-fatigue properties of th.se steels at 873k.h.ve been investigated. Th. creep-fatigue life of th. sample with.planar carbide at th. serrated grain boundary was found to be much.longer th.n th.t with.triangular carbide at th. straigh. one. Th.se results imply th.t th. planar carbides with.lower interfacial energy h.ve h.gh.r cavitation resistance, resulting in th. retardation of cavity nucleation and growth.to increase creep-fatigue life.

关键词： cavity nucleation factor grain boundary serration carbide morph.logy austenitic stainless steel grain boundary cavitation

Proximal gastric motility in critically ill patients with.type 2 diabetes mellitus

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2007年第2期13卷 270-275页

作者： nam Q Nguyen Robert J Fraser Laura k.Bryant Marianne Ch.pman Rich.rd h.h.lloway Department of Gastroenterology Hepatology and General Medicine Royal Adelaide Hospital South Australia Investigation and Procedures Unit Repatriation General Hospital South.Australia Anaesth.sia and Intensive Care Royal Adelaide Hospital South Australia

AIM： To investigate th. proximal gastric motor response to duodenal nutrients in critically ill patients with.longstanding type 2 diabetes ***： Proximal gastric motility was assessed （using a barostat） in 10 critically ill patients with.type 2 diabetes mellitus （59±3 years） during two 60-min duodenal infusions of Ensure （1 and 2 k.al/min）, in random order, separated by 2h.fasting. Data were compared with.15 non-diabetic critically ill patients （48 ± 5 years） and 10 h.alth. volunteers （28 ±3 years）. RESULTS： Baseline proximal gastric volumes were similar between th. th.ee groups. In diabetic patients, proximal gastric relaxation during I k.al/min nutrient infusion was similar to non-diabetic patients and h.alth. controls. In contrast, relaxation during 2 k.al/ min infusion was initially reduced in diabetic patients （P 〈 0.05） but increased to a level similar to h.alth. h.mans, unlik. non-diabetic patients wh.re relaxation was impaired th.ough.ut th. infusion. Duodenal nutrient stimulation reduced th. fundic wave frequency in a dose-dependent fash.on in both.th. critically ill diabetic patients and h.alth. subjects, but not in critically ill patients with.ut diabetes. Fundic wave frequency in diabetic patients and h.alth. subjects was greater th.n in non-diabetic ***： In patients with.diabetes mellitus, proximal gastric motility is less disturbed th.n nondiabetic patients during critical illness, suggesting th.t th.se patients may not be at greater risk.of delayed gastric emptying.

关键词： Proximal gastric function Diabetes mellitus type 2 Critical illness Enteral nutrition

Reaction dynamics for ph.toproductions of baryon resonances

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ch.nese Ph.sics C 2009年第12期33卷 1167-1174页

作者： A. h.sak. T. h.odo D. Jido h.-Ch. k.m h. Nagah.ro S.I. nam M. Ok. S. Ozak. Rresearch.Center for Nuclear Ph.sics Osaka University Ibaraki 567-0047 Japan Department of Ph.sics Tokyo Institute of Technology Meguro 152-8551 Japan Yuk.wa Institute for Th.oretical Ph.sics Kyoto University Kyoto 606-8502 Japan Department of Ph.sics Inha University Incheon 402-751 Republic of Korea Department of Ph.sics Nara Women's University Nara 630-8506 Japan Department of Ph.sics Chung-Yuan Christian University Chung-Li 32023 China

Th. study of exotic structure of h.drons is fully ach.eved wh.n reaction dynamics of th. associated h.dron productions is well understood. We employ as th. standard mech.nism th. effective Lagrangian meth.d and investigate several ph.sical observables with.n th. framework. Th. parameters are constrained by microscopic description of h.drons. We discuss ph.toproductions of k.on associated with.th. ground state A（1116） and its resonances A（1405） and A（1520）. In th. former example we emph.size th. meson cloud effect wh.ch.significantly renormalizes th. ph.nomenological parameters, wh.le in th. latter we discuss th. features of th. standard meth.d. Finally we discuss briefly th. N（1535） for th. study of ch.ral symmetry of baryons. production of ηπ associated with.th. nucleon resonance

关键词： ph.toproduction strangeness baryon resonances

Impact of bolus volume on small intestinal intra-luminal impedance in h.alth. subjects

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2010年第17期16卷 2151-2157页

作者： nam Q Nguyen Laura k.Bryant Carly M Burgstad Robert J Fraser Daniel Sifrim Rich.rd h.h.lloway Department of Gastroenterology & h.patology Royal Adelaide HospitalAdelaide 5000Australia Investigation and Procedures Unit Repatriation General HospitalDaw Park 5041Australia Department of Medicine Centre for Gastroen-terological ResearchK.U.LeuvenLeuven 3000Belgium

AIM: To assess th. impact of bolus volume on th. ch.racteristics of small intestinal (SI) impedance ***: Concurrent SI manometry-impedance measurements were performed on 12 h.alth. volunteers to assess th. pattern of proximal jejunal fluid bolus movement over a 14 *** subject was given 34 boluses of normal saline (volume from 1 to 30 mL) via th. feeding tube placed immediately above th. proximal margin of th. studied segment.A bolus-induced impedance event occurred if th.re was > 12% impedance drop from baseline,over ≥ 3 consecutive segments with.n 10 s of bolus injection.A minor or major imped-ance event was defined as a duration of impedance drop h. minimum volume required for a detectable SI impedance event was 2 mL.A direct linear relationsh.p between th. SI bolus volume and th. occurrence of impedance events was noted until SI bolus volume reach.d 10 mL,a volume wh.ch.always produced an impedance flow *** was a moderate correlation between th. bolus volume and th. duration of impedance drop (r = 0.63,P h. number of propagated ch.nnels (r = 0.50,P h.gh.volume boluses were associated with.more major impedance events (≥ 10 mL boluses = 63%,3 mL boluses = 17%,and h.d an impact on th. type and length.of propagation of SI impedance events and a th.esh.ld of 2 mL is required to produce an event.

关键词： Bolus volume h.alth Impedance Luminal flow Small intestine

Petrogenesis of th. Paleoproterozoic Guandish.n Granitoids in Sh.nxi Province:Constraints from Geoch.mistry and Nd Isotopes

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English.Edition) 2006年第6期80卷 925-935页

作者： LIU Ch.oh.i LIU Sh.wen LI Qiugen Lü Yongjun k. h. PARk.Y. S. SONG Th. k.y Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education Sch.ol of Earth.and Space Sciences Peking University Beijing 100871 China Department of Environmental Geosciences Pukyong National University 599-1 Dayeong-dong Nam-gu Busan 608-737 Korea

Th. Guandish.n granitoids consist mainly of various granitoid intrusions with.different scales, including th. h.ijiazh.ang intrusion, Sh.zh.ang intrusion and h.ngjian intrusion, wh.ch.were formed between 1906 Ma and 1848 Ma. On th. basis of geological and petrological ch.racteristics, th.se granitoids can be classified into two groups： th. earlier gneissic granodiorites and monzogranites, and th. later massive leuco-monzogranites. Th.ir geoch.mical and Nd isotopic features indicate th.t th.y could be derived from complicated partial melting of supracrustal rock. with.an affinity of continental arc materials, such.as sandy sh.le and pelite, and with.garnet, pyroxene, h.rnblende and plagioclase as residual ph.ses. Biotite, feldspar and oth.r minerals were most lik.ly fractionated during th. magma evolution. Th.ir source may h.ve an affinity with.continental arcs, and th. granitoids could be derived from th. main syn-collisional to late-orogenic tectonic environment, wh.ch.may be related to th. final amalgamation between th. Eastern and Western continental block. in th. North.Ch.na Craton.

关键词： granitoids geoch.mistry Sm-Nd isotopes petrogenesis Paleoproterozoic Guandish.n