检索结果-南通市图书馆

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

利用自倾门提高大坝安全性能(英文)

岩土工程学报 2008年第11期30卷 1699-1706页

作者： sebastien Lacroix HYDROPLUs 5 tours Ferdinand-de-Lesseps 92851 Rueil-Malmaison Cedex France

探讨了辅助溢洪道及采用自倾门泄洪的优点,并通过 Jindabyne 大坝、Otter brook 大坝和 Canto 大坝三个工程,介绍了自倾门系统的显著特点以及选择流程。

关键词：非常溢洪道自倾门大坝安全辅助溢洪道门

The Influence of Ethyl Branch on Formation of shish-Kebab Crystals in Bimodal Polyethylene under shear at Low Temperature

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer science 2021年第8期39卷 1050-1058,I0008页

作者： Zong-Bao Wang Yi-Min Mao Xu-Ke Li Yi-Guo Li Chatchai Jarumaneeroj Boonyakeat Thitisak Piyawan Tiyapiboonchaiya Wonchalerm Rungswangd Benjamin s.Hsiao Ningbo Key Laboratory of specialty Polymers School of Materials Science and Chemical EngineeringNingbo UniversityNingbo 315211China Department of Materials science and Engineering University of MarylandCollege ParkMaryland 20742USA NIsT Center for Neutron Research National Institute of Standards and TechnologyGaithersburgMaryland 20899USA sCG Chemicals Co. Ltd.Siam Cement Group(SCG).1 Siam Cement Rd.BangsueBangkok 10800Thailand UsA Department of Chemistry Stony Brook UniversityStony BrookNY 11794-3400USA

Formation of shish-kebab crystals using a bimodal polyethylene system containing high molecular weight(HMW)component with different ethyl branch contents was *** situ small-angle X-ray scattering(sAXs)and wide-angle X-ray diffraction(WAXD)techniques were used to monitor the formation and evolution of shish-kebab structure sheared at low temperature in simple shear mode and low *** the bimodal PE with no branch formed shish-kebab crystals at the shear temperature of 129℃,and the shish length increased with the crystallization time,while bimodal PE with branch has no observable shish under the same *** degree of crystallization for bimodal PE with no branch increased with time up to above 7%,while those with ethyl branch increased continually up to above 23%.Furthermore,bimodal PE's Hermans orientation factor with no branch increased to 0.60,while those with ethyl branch only increased to a value below *** study indicated that the shish-kebab crystal formed at the low temperature of 129℃is due to the stretch of entangled chains under shear for the bimodal PE with no *** partly oriented lamellar crystals were formed for the bimodal PE with ethyl *** the results at the shear temperatures higher,closed to,and lower than the melting point,the modulation of shish crystals formation owing to different mechanisms of the coil-stretch transition and the stretched network by changing shear temperature was achieved in the bimodal PE samples.

关键词： Bimodal polyethylene shish-kebab Ethyl branch shear

胰腺癌的多期相CT结构报告:分期和手术计划制定的潜在影响

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2015年第2期 179-179页

作者： O.R.brook A.brook C.M.Vollmer T.s.Kent N.sanchez I.Pedrosa 卢忠飞 Department of Radiology University of Texas Southwestern Medical Center 2201 Inwood Rd 2nd Floor Suite DallasTX 75390-9085

摘要目的比较多期相CT的结构化及非结构化报告对胰腺癌的分期及其对手术可切除性评估的影响。材料与方法该回顾性研究经机构伦理委员会同意,符合HIPAA,所有病

关键词：胰腺癌多期 CT

structure and magnetostructural correlation of ferrimagnetic meso-tetraphenylporphinatomanganese(Ⅲ) dimethyl- N,N′-dicyanoquinone diiminide, [MnTPP]^+[Me_2DCNQI]^(.-)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

science China Chemistry 2012年第6期55卷 987-996页

作者： Jordan L. Arthur saul H. Lapidus Peter W. stephens Joel s. Miller Department of Chemistry University of Utah Salt Lake City Utah 84112-0850 USA Department of Physics & Astronomy Stony Brook University Stony Brook NY 11794-3800 USA Photon sciences Directorate Brookhaven National Laboratory Upton NY 11973 USA

The structure [MnmTPP][Me2DCNQI] （TPP = tetraphenylporphinato; Me2DCNQI = 2,5-dimethyl-N,N＇-dicyanoquinonediimine） has been determined from X-ray powder diffraction data. The nonsolvated structure is composed of linear （I-D） chains of alternating [MnmTPP]＋ and ta-[MezDCNQI]＇- with intrachain Mn...Mn separations of 12.83 A, and a Mn-NDcNQI distance of 2.18A. The dihedral angle between the mean Mn（N4）xpp and [MezDCNQI]＇-planes, and the Mn-（N-C）ocNQ1 angle are 84.18° and 143.6°, respectively. [MnInTpP][MezDCNQI] has a Tc of 4.3 K from the 10 Hz x（T） data, 2-K coercivity of 5,600 Oe, and 6,300 emuOe/mol remnant magnetization that are reduced from that observed for related materials, and their in- clusion extends the magnetostructural correlation between the intrachain coupling and both the dihedral angle between the mean Mn（N4）xPp and [TCNE]＇-（TCNE --- tetracyanoethylene） planes and Mn-（N-C）Tcr angles. This is in accord with the in- trachain coupling arising from the overlap of the Mnm dz2-1ike singly occupied molecular orbital （sOMO） and the z component of the [TCNE]- π＊（π2＊） sOMO, which increases with decreasing dihedral angle between the mean Mn（N4）xep and [TCNE]＇- planes and Mn-（N-C）TcNE angle.

关键词： metalloporphyrin magnetic ordering ferrimagnet crystal structure

多孔白光散斑方法应用于受压带孔圆筒的应变分析

在线全文

学校读者我要写书评

暂无评论

固体力学学报 1981年第1期 78-84页

作者：姜复本刘宝琛蔺书田美国纽约州立大学石溪分校机械系中国北京清华大学工程力学系

用白光散斑方法进行了带圆孔和方孔圆筒应变集中系数分析.为了记录白光散斑和得到全场等值线采用了四孔记录装置.

关键词：散斑图受压带应变分析分析(力学) 白光散斑方法应用条纹图应变集中系数像平面空间运动傅里叶滤波

Cataract blindness in Hungary

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2020年第3期13卷 438-444页

作者： Gábor L.sándor Gábor Tóth Dorottya szabó Irén szalai Regina Lukács Anita Pék Georgina Z.Tóth András Papp Zoltán Z.Nagy Hans Limburg János Németh Department of Ophthalmology Semmelweis UniversityBudapest 1085Hungary Department of Ophthalmology Flór Ferenc HospitalKistarcsa 2143Hungary Department of Ophthalmology Petz Aladár HospitalGyor 9024Hungary Faculty of Health sciences Semmelweis UniversityBudapest 1088Hungary Health Information services Grootebroek 1613The Netherlands

AIM:To estimate the prevalence of blindness and visual impairment resulting from cataract in the population aged≥50 y in Hungary,and to assess the cataract surgical ***:A rapid assessment of avoidable blindness(RAAB)was conducted.A total of 3523 eligible people were randomly selected and *** participant underwent surgery for cataract was interviewed with regard to the year,place,and costs of the *** with obvious cataract were asked why they had not yet undergone surgery(barriers to surgery).REsULTs:An estimated 12514 people were bilaterally blind;the visual acuity(VA)in 19293 people wassstimated 77933 eyes are blind;98067 eyes had a VA ofstimated 277493 eyes had a VA ofsurgeries were conducted in government *** age-and sexadjusted cataract surgical coverage with VAs was 90.0%.The rate of good visual outcome after surgery was 79.5%.Ocular comorbidity was the main cause of poor outcome(78.1%),followed by late complications(such as posterior capsule opacification)(17.2%),inadequate optical correction(3.1%),and surgical complications(1.6%).The main barrier to surgery in people with bilateral cataract and VA ofs‘need not felt’.CONCLUsION:The prevalence of visual impairment resulting from cataract is slightly higher than *** quality of the cataract surgical service seems adequate in ***,the number of cataract operations per year should continue to increase due to the increasing patient demands and the aging population.

关键词： cataract prevalence blindness visual impairment rapid assessment of avoidable blindness

A MATHEMATICAL THEORY FOR LEs CONVERGENCE

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 Mathematica scientia 2012年第1期32卷 237-258页

作者： H.Lim T.Kaman V.Mahadeo J.Glimm s.Dutta D.H.sharp B.Plohr Department of Applied Mathematics and statistics Stony Brook University College of st.Catherine Los Alamos National Laboratory

Practical simulations of turbulent processes are generally cutoff, with a grid resolution that stops within the inertial range, meaning that multiple active regions and length scales occur below the grid level and are not resolved. This is the regime of large eddy simulations （LEs）, in which the larger but not the smaller of the turbulent length scales are resolved. solutions of the fluid Navier-stokes equations, when considered in the inertial regime, are conventionally regarded as solutions of the Euler equations. In other words, the viscous and diffusive transport terms in the Navier-stokes equations can be neglected in the inertial regime and in LEs simulations, while the Euler equation becomes fundamental. For such simulations, significant new solution details emerge as the grid is refined. It follows that conventional notions of grid convergence are at risk of failure, and that a new, and weaker notion of convergence may be appropriate. It is generally understood that the LEs or inertial regime is inherently fluctuating and its description must be statistical in nature. Here we develop such a point of view systematically, based on Young measures, which are measures depending on or indexed by space time points. In the Young measure du（ξ）x,t, the random variable ξ of the measure is a solution state variable, i.e., a solution dependent variable, representing momentum, density, energy and species concentrations, while the space time coordinates, x, t, serve to index the *** evidence suggests that convergence via Young measures is suifficiently weak to encompass the LEs/inertial regime; numerical and theoretical evidence suggests that this notion may be required for passive scalar concentration and therm degrees of freedom. Our objective in this research is twofold： turbulent simulations without recourse to ad- justable parameters （calibration） and extension to more complex physics, without use of additional models or parameters, in both cases with

关键词： numerical methods turbuent mixing

Thick Electrode Design for Facile Electron and Ion Transport:Architectures,Advanced Characterization,and Modeling

在线全文

学校读者我要写书评

暂无评论

Accounts of Materials Research 2022年第4期3卷 472-483页

作者： David J.Arnot Karthik s.Mayilvahanan Zeyu Hui Kenneth J.Takeuchi Amy C.Marschilok David C.Bock Lei Wang Alan C.West Esther s.Takeuchi Institute for Electrochemically stored Energy and Department of Materials science and Chemical Engineering Stony Brook UniversityStony BrookNew York 11794United States Department of Chemical Engineering Columbia UniversityNew YorkNew York 10027United States Interdisciplinary science Department Brookhaven National LaboratoryUptonNew York 11973United States

CONsPECTUs:The demand for lithium ion batteries continues to expand for powering applications such as portable electronics,grid-scale energy storage,and electric *** the application requirements advance,the innovation of lithium ion batteries toward higher energy density and power output is *** with the investigation of new materials,an important strategy for increasing battery energy content is to design electrodes with high areal loading to minimize the fraction of nonactive materials such as current collectors,separators,and packaging components,resulting in significant gains in energy content and the reduction of the system-level ***,the adoption of thick high areal loading electrodes has been impeded by sluggish charge transport and mechanical *** conventional slurry cast electrodes,battery function significantly deteriorates with increases in electrode thickness due to high cell polarization and the incomplete utilization of active ***,a consideration of approaches that facilitate an understanding and eventual adoption of high-loading electrodes is warranted to enable the deliberate advancement of next-generation batteries.

关键词： battery lithium Electron

Healing Dysfunctional Identity: Bridging Mind-Body Intervention to Brain systems

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 Behavioral and Brain science 2017年第3期7卷 137-164页

作者： s. shaun Ho Yoshio Nakamura Department of Psychiatry Stony Brook University Stony Brook NY USA Department of Psychiatry University of Michigan Ann Arbor MI USA Department of Anesthesiology Pain Research Center University of Utah School of Medicine Salt Lake City UT USA

In this paper, we aim to use an innovative model to integrate applied work on a fast-acting mind-body intervention, Mind-Body Bridging (MBB), with theoretical work based on psychology and neuroscience. In an affect-object generative inference and regulation (AGIR) model, we propose that functional dynamics between two systems, the affect-object thought generation system and the cognitive control system, can guide an individual to achieve homeostasis within self and harmonious relationships with others. We used Neurosynth (***), an automated meta-analysis database, to identify potential brain substrates underlying the key components in the AGIR model. Based on the findings, some brain regions are implicated as the key cortical substrates in this model, corroborating our central hypothesis that a hallmark of mind-body wellbeing can be characterized as a low-frequency anti-correlantion between 1) the cognitive control system including the dorsal anterior/middle cingulate cortex, and 2) the affect-object thought generation system including the ventromedial prefrontal cortex and posterior cingulate cortex. MBB provides an efficient strategy for responding to and dissolving a fundamental problem that impairs mind-body wellbeing, i.e., unrealistic identity-grasping consisting of self-centered embodied expectations of self and others. We demonstrated how theoretical and applied work could be integrated by drawing evidence from the neuroscience literature to support the AGIR model, and then we applied the AGIR model to elucidate how MBB might work.

关键词： Active Inference Affects Brain Cortical Networks Embodied Beliefs Emotions Emotion Regulation Identity Intervention Mind-Body Wellbeing Mind-Body Bridging Neuroimaging Psychopathology self