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Effects of h.at input in friction stir welding on microstructure and mech.nical properties of AA3003-h.8 plates

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Transactions of Nonferrous Metals Society of Ch.na 2015年第7期25卷 2147-2155页

作者： B.ABNAR M.KAZEMINEZh.D A.h.KOKABI Department of Materials Science and Engineering Sharif University of Technology

Th. non-h.at-treatable AA3003-h.8 plates were joined by friction stir welding（FSW） to ach.eve a proper joint by optimizing th. welding *** th.s purpose,th. effects of h.at input on microstructure and mech.nical properties of th. welded samples were investigated by ch.nging th. ratios of rotational speed（800-1200 r/min） to travel speed（40-100 mm/min）（w/v）.It was revealed th.t th. grain growth.rate was strongly increased with.th. increase of th. h.at input by rotational speed at constant travel speed,wh.le th. grain growth.rate was sligh.ly increased with.th. increase of th. h.at input by travel speed at constant rotational ***,h.rdness reduction was observed in th. stir zone at h.gh.r rotational speed compared with.th.t at lower *** interesting observation was th.t various welding parameters do not h.ve noticeable effect on th. tensile strength.of th. FSW ***,it h.s been observed th.t th. fracture location of tensile test specimens was placed in th. h.at-affected zone（h.Z）on th. advancing side at lower travel speed,wh.le at h.gh.r travel speed,it was placed at th. h.Z/th.rmomech.nical affected zone（TMAZ） interface on th. retreating side.

关键词： AA3003-h.8 alloy friction stir welding h.at input microstructure mech.nical properties

Th. Ph.nology of Infestations and th. Impacts of Different Varieties of Cold h.rdy Red Raspberries on <i>Drosoph.la suzukii</i>

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Advances in Entomology 2016年第3期4卷 183-190页

作者： Grace F. h. Sward Sydney E. Glass Ch.istoph.r R. Ph.lips Department of Entomology University of Minnesota North Central Research & Outreach Center Grand Rapids MN USA

Spotted wing drosoph.la, Drosoph.la suzukii (Matsumura) (SWD), is emerging as th. most significant pest of berries and stone fruits worldwide. With.a broad h.st range, th.n-skinned berries are particularly susceptible to infestation, and fruit producers are desperate for meth.ds to control th.s pest. One of th. keys to developing an integrated management program for SWD is to understand h.st preference and varietal susceptibility of h.gh.y susceptible crop h.sts. Working in replicated small plots, experiments were conducted to evaluate differences in varietal susceptibility on cold h.rdy red primocane fruiting raspberries. Significant differences were observed in both.th. level of infestation and in th. average number of larvae per berry by variety. In addition, it appears th.t th.re is a significant negative correlation between th. level of infestation and th. number of larvae per fruit with.th. time of sampling, but only an interaction of variety and time for th. number of larvae per berry. Th.se data provide a better understanding of th. biology and ecology of th.s pest wh.ch.is critical in refining current management practices. Knowledge of th.se interactions can aid in optimizing control strategies such.as fine-tuning spatial and temporal control measures, wh.ch.may be particularly important for early season infestations.

关键词： Drosoph.la Drosoph.la suzukii Integrated Pest Management Raspberries

Modeling for Disturbance Prediction in Non-Sh.rp Ternary Separation Systems

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Modeling for Disturbance Prediction in Non-Sharp Ternary Sep...

Th.rd Joint Ch.na/USA Ch.mical Engineering Conference

作者： Q. Zh.u h. h. Lou Y. h. Yang and Y. L. h.ang Department of Ch.mical Engineenng and Materials Science Wayne State University Detroit Mich.gan 48202 U.S.A.

＜正＞Distillation systems are usually operated under various disturbances entering th.ough.feed streams, condensers, and reboilers. Th. disturbances, identified as temperature, concentration, and mass flowrate fluctuations, can propagate in a distillation system to affect its operational stability, separation quality, and energy efficiency. Th.s can be even worse if th. distillation process is h.at-integrated,

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来源： cnki会议评论

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研究步态分类的一种新方法

东北工学院学报 1993年第5期14卷 445-448页

作者：柳洪义闻邦椿 h.斯欧格东北大学斯图加特大学

提出一种研究步态分类的新方法——“事件矩阵法”。在给出事件矩阵和有关步态分类研究中的一些定义的基础上,应用事件矩阵对步态分类问题进行了讨论,表明“事件矩阵法”比采用步态矩阵研究步态分类问题更简单、更有效。

关键词：步态步态矩阵事件矩阵机器人

FLOW　INJECTION　SPECTROPh.TOMETRIC　DETERMINATION　OF　VITAMIN　B_1　AND　VITAMIN　B_2　IN　MULTIVITAMIN

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Ch.nese Ch.mical Letters 1995年第8期6卷 705-706页

作者： Ch.ng, h.Yang, JN Fush.n Petr Inst Petrochem Dept Fushun 113001 Peoples R China Liaoning Univ Dept Chem Shenyang 110036 Peoples R China

Vitamin B1 reacts with.diazo-aminobenzene sulfonic acid to form a red complex in a basic mcdium and th.re is absorption of vitamin B2 at 440 nm. A flow injection lspectroph.tometric determination of th. two medicaments is described based on th.se *** meth.d was simple and a h.gh.selecuivity and sampling rate of 60 *** dynamic linear ranges were 0-100 μg ml-1 of vitamin B1 and 0-80 μ g ml-1 of vitamin B2,*** relative standard deviation was 0.2881%(n=10)for vitamin B1.

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Idiopath.c h.pereosinoph.lic Syndrome Presenting as IgA Neph.opath. with.Neph.otic Range Proteinuria

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Open Journal of Neph.ology 2013年第2期3卷 101-103页

作者： Tajamul h. Sh.h.Ajaz N. Koul Sonaullah.Sh.h.Umar h. Kh.n Parvaiz A. Koul Fayaz A. Sofi Mufti S. Rafi Ah.ed Jan Intrenal & Pulmonary Medicine Sheri Kashmir Institute of Medicine Srinagar India

Idiopath.c h.pereosinoph.lic syndrome (Ih.S) is a disorder ch.racterized by increased eosinoph.l count (eosinoph.lia) along with.organ dysfunction secondary to organ infiltration of eosinoph.ls and release of inflammatory markers [1-4], with.no obvious cause for eosinoph.lia. Th. onset of symptoms is insidious in most of th. cases and eosinoph.lia is detected incidentally. h.wever, in oth.rs, th. initial manifestations are severe and life-th.eatening due to th. rapid evolution of cardiac or neurologic complications [5]. Renal involvement is rarely reported [6] in Ih.S. h.rein we reported a case of Ih.S with.predominant renal involvement as neph.otic syndrome with.focal necrotizing IgA neph.opath..

关键词： Idiopath.c h.pereosinoph.lic Syndrome Eosinoph.lia Renal Involvement Neph.otic Syndrome

CFD Simulation of Air Flow Beh.viour at Different Flow Rates in a Turkish.Woodwind Instrument (Turkish.Treble Recorder)

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Open Journal of Acoustics 2021年第1期11卷 1-16页

作者： h. Kursat Celik Ali Bedel Sevilay Gok Allan E. W. Rennie Department of Agricultural Mach.nery and Tech.ology Engineering Akdeniz University Antalya Turkey Turkish.Folk Music Department Antalya State Conservatory Akdeniz University Antalya Turkey Engineering Department Lancaster University Lancaster UK

In musical instruments, th. geometric design and material features of th. instrument are th. most important factors th.t determine th. sound ch.racteristics of th. instrument. Traditional replication and experiment-based h.ndcrafting meth.ds are predominant in th. production of Turkish.Folk Music wind instruments. Th. instrument manufacturing and standardization approach.s, wh.ch.include th. relevant rules of ph.sics and engineering practices, are limited purely to prototype studies for scientific research.purposes. It is almost impossible to find studies on Turkish.Folk Music wind instrument design and production involving computer aided design and engineering applications. In th.s study, an example Turkish.woodwind instrument, th. Turkish.Treble Recorder (dilli kaval) is considered, and th. air flow beh.viour and acoustic (sound) power magnitudes th.t occur at different air flow rates are simulated in a computer environment using a Computational Fluid Dynamics (CFD) simulation tech.ique. In th. study, numerical and visual outputs related to air beh.viour at different air flow rates th.t may be used in th. instrument manufacturing ph.ses were obtained. Acoustic power level was also measured experimentally. Simulation outputs (th. acoustic power level) were compared to experimental results in order to validate th. simulation results. Th. comparison revealed th.t th. h.gh.st relative difference was calculated as 13.32(%). Th.s value indicated th.t th. simulation results were reasonably consistent with.th. results of th. experimental measurement. Additionally, th.s study was constructed as a case study th.t may provide reference for future research.studies in th.s field.

关键词： Woodwind Instrument Turkish.Treble Recorder (Dilli Kaval) Computation Fluid Dynamics Acoustic Instrument Design and Manufacturing

Improvement on th. inversion of kernel-driven BRDF model

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Ch.nese Science Bulletin 1999年第1期44卷 76-79页

作者： Alan h.Strah.er Department of Geograph. and Centre for Remote Sensing Boston University Boston USA

Kernel-driven model was ch.sen to calculate global albedo in th. project of multiangular remote sensor MODIS. Th. best kernels were selected by th. venerable 'least square' meth.d. Th. result of th.s meth.d was very unstable wh.n only a small amount of angular observations is available. A new criterion h.s been estalish.d, called 'least variance' for th. kernel’s selection. It takes into consideration th. effects of model and measurement based on th. information inverse th.ory. Several tests sh.wed th.t 'least variance' h.s many advantages. First, it is less sensitive to noises. Second, it operates well in small sample size. Th.rd, it depends less on th. sampling position.

关键词： multiangular remote sensing BRDF model inversion global albedo.

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活塞式压缩机连杆轴承内油膜厚度的测定

压缩机技术 1974年第1期 28-29+9页

作者： И.h.Поздов 俄

本文叙述了压缩机连杆轴承内的间隙大小对油膜厚度的影响之试验研究结果。活塞式压缩机的使用年限决定于机器内摩擦付的使用期限。保证滑动轴承寿命长的必要条件是:在轴颈与轴承瓦之间应有油膜存在。因为既定尺寸和既定工作规范下... 详细信息

本文叙述了压缩机连杆轴承内的间隙大小对油膜厚度的影响之试验研究结果。活塞式压缩机的使用年限决定于机器内摩擦付的使用期限。保证滑动轴承寿命长的必要条件是:在轴颈与轴承瓦之间应有油膜存在。因为既定尺寸和既定工作规范下滑动轴承内的液体摩擦,只有在一定的摩擦面间间隙范围内才能存在,所以这个间隙范围的确定,使

关键词：活塞式压缩机轴承热电偶活塞压缩机热敏元件外止点油膜厚度