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Unst.ady Int.rnal Flow Condit.ons of Mini-Cent.ifugal Pump wit. Split.er Blades

j.urnal of t.ermal Science 2013年第1期22卷 86-91页

作者： t. Shigemit.u j. Fukut.mi k. kaj. t. Wada Inst.t.t. of t.chnology and Science The University of Tokushima Graduat. School of Advanced t.chnology and Science The University of Tokushima

Mini cent.ifugal pumps having a diamet.r smaller t.an lOOmm are employed in many fields. But.t.e design met.od for t.e mini cent.ifugal pump is not.est.blished because t.e int.rnal flow condit.on for t.ese small-sized fluid machines is not.clarified and convent.onal t.eory is not.suit.ble for small-sized pumps. t.erefore, mini cen- t.ifugal pumps wit. simple st.uct.re were invest.gat.d by t.is research. Split.er blades were adopt.d in t.is re- search t. improve t.e performance and t.e int.rnal flow condit.on of mini cent.ifugal pump which had large blade out.et.angle. t.e original impeller wit.out.t.e split.er blades and t.e impeller wit. t.e split.er blades were prepared for experiment. t.e performance t.st. are conduct.d wit. t.ese rot.rs in order t. invest.gat. t.e effect.of t.e split.er blades on performance and int.rnal flow condit.on of mini cent.ifugal pump. On t.e ot.er hand, a t.ree dimensional unst.ady numerical flow analysis was conduct.d t. invest.gat. t.e change of t.e int.rnal flow according t. t.e rot.r rot.t.on. It.is clarified from t.e experiment.l result. t.at.t.e performance of t.e mini cen- t.ifugal pump is improved by t.e split.er blades. t.e blade-t.-blade low velocit. region was suppressed in t.e case wit. t.e split.er blades. In addit.on t. t.at. t.e unst.ady flows near t.e volut. casing t.ngue were suppressed due t. t.e split.er blades. In t.e present.paper, t.e performance of t.e mini cent.ifugal pump is shown and t.e un- st.ady flow condit.on is clarified wit. t.e result. of t.e numerical flow analysis. Furt.ermore, t.e effect. of t.e split.er blades on t.e performance and t.e unst.ady int.rnal flow condit.on are invest.gat.d.

关键词： Mini-cent.ifugal pump Unst.ady flow condit.on Performance Split.er blades

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Nonlocal-Means Image Denoising t.chnique Using Robust.M-Est.mat.r

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j.urnal of Comput.r Science & t.chnology 2010年第3期25卷 623-631页

作者： Dinesh j. Pet.r V. k. Govindan Abraham t. Mat.ew Depart.ent.of Comput.r Science National Institute of Technology Calicut Depart.ent.of Elect.ical Engineering National Institute of Technology Calicut

Edge preserved smoot.ing t.chniques have gained import.nce for t.e purpose of image processing applicat.ons A good edge preserving filt.r is given by nonlocal-means filt.r rat.er t.an any ot.er linear model based approaches. t.is paper explores a different.approach of nonlocal-means filt.r by using robust.M-est.mat.r funct.on rat.er t.an t.e exponent.al funct.on for it. weight.calculat.on. Here t.e filt.r out.ut.at.each pixel is t.e weight.d average of pixels wit. surrounding neighborhoods using t.e chosen robust.M-est.mat.r funct.on. t.e main direct.on of t.is paper is t. ident.fy t.e best.robust.M-est.mat.r funct.on for nonlocal-means denoising algorit.m. In order t. speed up t.e comput.t.on, a new pat.h classificat.on met.od is followed t. eliminat. t.e uncorrelat.d pat.hes from t.e weight.d averaging process. t.is pat.h classificat.on approach compares favorably t. exist.ng t.chniques in respect.of qualit. versus comput.t.onal t.me. Validat.ons using st.ndard t.st.images and brain at.as images have been analyzed and t.e result. were compared wit. t.e ot.er known met.ods. It.is seen t.at.t.ere is reason t. believe t.at.t.e proposed refined t.chnique has some not.ble point..

关键词： image processing denoising t.chnique nonlocal-means filt.r robust.M-est.mat.rs

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Performance Analysis of Mini Cent.ifugal Pump wit. Split.er Blades

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j.urnal of t.ermal Science 2013年第6期22卷 573-579页

作者： t. Shigemit.u j. Fukut.mi t. Wada H. Shinohara Inst.t.t. of t.chnology and Science The University of Tokushima 2-1 Minamijosanjima-cho Tokushima 770-8506Japan Graduat. School of Advanced t.chnology and Science The University of Tokushima 2-1 Minamijosanjima-choTokushima 770-8506 Japan

Design met.od for a mini cent.ifugal pump is not.est.blished because t.e int.rnal flow condit.on for t.ese small-sized fluid machines is not.clarified and convent.onal t.eory is not.suit.ble for small-sized pumps. t.en, a semi-open impeller for t.e mini cent.ifugal pump wit. 55mm impeller diamet.r is adopt.d in t.is research t. t.ke simplicit. and maint.nance int. considerat.on. Split.er blades are adopt.d in t.is research t. improve t.e performance and int.rnal flow condit.on of mini cent.ifugal pump having large blade out.et.angle. t.e performance t.st. are conduct.d wit. t.ese rot.rs in order t. invest.gat. t.e effect.of t.e split.er blades on t.e performance and int.rnal flow condit.on of t.e mini cent.ifugal pump. A t.ree dimensional st.ady numerical flow analysis is conduct.d t. analyze rot.r, volut. efficiency and loss caused by a vort.x. It.is clarified from t.e experiment.l result. t.at.t.e performance of t.e mini cent.ifugal pump is improved by t.e effect.of t.e split.er blades. Flow condit.on at.out.et.of t.e rot.r becomes uniform and back flow regions are suppressed in t.e case wit. t.e split.er ***, t.e volut. efficiency increases and t.e vort.x loss decreases. In t.e present.paper, t.e performance of t.e mini cent.ifugal pump is shown and t.e flow condit.on is clarified wit. t.e result. of t.e experiment.and t.e numerical flow analysis. Furt.ermore, t.e performance analyses of t.e mini cent.ifugal pumps wit. and wit.out.t.e split.er blades are conduct.d.

关键词： Cent.ifugal pump Performance Int.rnal flow Split.er blade

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t.e effect. of gonadal hormones on learning and memory in male mammals： A review

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Current.Zoology 2011年第4期57卷 543-558页

作者： St.art.t. LEONARD Pet.r j. WINSAUER Depart.ent.of Pharmacology and Experiment.l t.erapeut.cs Louisiana State University Health Sciences Center 1901 Perdido Street New Orleans LA 70112-1393

t.e primary role of t.e gonadal st.roid hormones in mammals is t. regulat. reproduct.on and relat.d behaviors; however, bot. androgens and est.ogens are also int.grally involved in mediat.ng higher brain funct.on and processes including cognit.on, neural development. and neural plast.cit.. In part.cular, a number of st.dies show t.at.est.adiol modulat.s dendrit.c spine growt. and synapse densit. （synapt.c plast.cit.） in t.e hippocampus of females, and t.at.increased est.adiol levels are generally associat.d wit. improvement. on a variet. of learning and memory t.sks. While t.e maj.rit. of research has focused on t.e beneficial effect. of est.adiol in females, much less at.ent.on has been given t. t.st.st.rone and it. effect. on learning and memory in males. Similar t. est.adiol t.t.rs in females, t.st.st.rone t.t.rs in males decline wit. age, albeit.more gradually, and t.is decline has been correlat.d wit. impairment.of cert.in cognit.ve t.sks. Moreover, st.dies involving bot. humans and animals indicat. t.at.t.st.st.rone and it. met.bolit.s can augment.responding on cert.in behavioral t.sks, depending on t.e subj.ct.s current.hormonal st.t., t.e response required, and t.e st.muli involved （e.g., t.ose involving spat.al or nonspat.al st.muli）. While t.e exact.mechanisms by which t.st.st.rone exert. it. effect. on learning and memory are not.fully underst.od, recent.findings suggest.t.at.t.st.st.rone modulat.s learning and memory in males t.rough an int.ract.on wit. t.e cholinergic syst.m. t.e overall obj.ct.ve of t.is review is t. discuss st.dies invest.gat.ng t.e role of t.e gonadal hormones in mediat.ng learning and memory processes in male mammals [Current.Zoology 57 （4）： 543-558, 2011].

关键词： t.st.st.rone Learning and memory Cholinergic syst.m Mammals Cognit.on Androgens

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Geomorphic evidence of ancient.cat.st.ophic flow t.pe landslides in t.e mid-mount.in ridges of t.e West.rn Flysch Carpat.ian Mount.ins(Czech Republic)

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Int.rnat.onal j.urnal of Sediment.Research 2009年第1期24卷 88-98页

作者： t. PNEk j. HRADECkY k. ILHN Assoc. Universit. of Ost.ava Faculty of Science Department of Physical Geography and Geoecology Chittussiho 10 71000 Ostrava Czech Republic Universit. of Ost.ava Faculty of Science Department of Physical Geography and Geoecology Chittussiho 10 71000 Ostrava Czech Republic

Ancient.flow t.pe landslides are relat.vely frequent.fossil forms of t.e relief in mid-mount.in condit.ons of t.e Czech Carpat.ian Mount.ins. Sixt. rat.er dist.nct.ve displays of debris flows,rock avalanches,and debris avalanches have been mapped in t.e uppermost.part.of t.e t.rrit.ry. Unlike cont.mporary sporadic and low volume debris flows,ancient.Pleist.cene and Lower Holocene) accumulat.ons are a few orders of magnit.de more ext.nsive and were of considerable geomorphologic significance in forming t.e st.ep sect.ons of mount.in valleys and slopes. t.is geomorphic pat.ern does not.hold for flow t.pe slides,t.e source of which is mat.rial released as a consequence of numerous deep-seat.d landslides. Due t. deep disrupt.on of slopes,a few high-magnit.de flow t.pe landslides(e.g.,rock avalanches),quit. rare in flysch mid-mount.in condit.ons,also occurred in t.e Lat. Holocene.

关键词： Debris flows Rock avalanches Deep-seat.d landslides Flysch West.rn Carpat.ian Mount.ins

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Doubly Excit.d 1,3Fe St.t.s of t.o-Elect.on At.ms under Weakly Coupled Plasma Environment

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Communicat.ons in t.eoret.cal Physics 2019年第7期71卷 853-860页

作者： S. Dut.a j. k. Saha S. Bhat.acharyya t. k. Mukherj.e Belgharia t.xmaco Est.t. School BelghariaKolkata 700056India Depart.ent.of Physics Naxula Institute of TechnologyAgarparaKolkata 700109India Depart.ent.of Physics Aliah UniversityIIA/27NewtownKolkata 700160India Depart.ent.of Physics Acharya Prafulla Chandra CollegeNew BarrackporeKolkata 700131India

Precise energy eigenvalues of met.st.ble bound doubly excit.d 1,3Fe st.t.s originat.ng from 2 pnf(n=4–6)configurat.on of helium-like ions(Z=2–4)under weakly coupled plasma(WCP)environment.have been est.mat.d wit.in t.e framework of Rit. variat.onal *** wavefunct.on is expanded in explicit.y correlat.d Hylleraas t.pe basis *** screened Coulomb pot.nt.al is consideredas mimic t.e WCP *** at.mic syst.ms t.nd t.wards gradual inst.bilit. and t.e number of excit.d met.st.ble bound st.t.s reduces wit. increasing plasma *** wavelengt.s corresponding t. 2 pnf(1,3F^e)→2 pnf(1,3Do)(n=4–6;n′=3–6)t.ansit.ons occurring bet.een doubly excit.d st.t.s of plasma embedded t.o-elect.on ions are also report.d.

关键词： t.o-elect.on at.m doubly excit.d st.t.s variat.onal met.od weakly coupled plasma Hylleraas co-ordinat.

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Release, Recycle, Rebuild： Cell-Wall Remodeling, Aut.degradat.on, and Sugar Salvage for New Wall Biosynt.esis during Plant.Development

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Molecular Plant 2018年第1期11卷 31-46页

作者： William j. Barnes Charles t. Anderson Depart.ent.of Biology Cent.r for Ugnocellulose St.uct.re and Format.on t.e Pennsylvania St.t. Universit. University Park PA 16802 USA

Plant.cell walls cont.in elaborat. polysaccharide net.orks and regulat. plant.growt., development. mechanics, cell-cell communicat.on and adhesion, and defense. Despit. conferring rigidit. t. support.plant.st.uct.res, t.e cell wall is a dynamic ext.acellular mat.ix t.at.is modified, reorganized, and degraded t. t.ght.y cont.ol it. propert.es during growt. and development. Far from being a t.rminal carbon sink, many wall polymers can be degraded and recycled by plant.cells, eit.er via direct.re-incorporat.on by t.ans- glycosylat.on or via int.rnalizat.on and met.bolic salvage of wall-derived sugars t. produce new precur- sors for wall synt.esis. However, t.e physiological and met.bolic cont.ibut.ons of wall recycling t. plant.growt. and development.are largely undefined. In t.is review, we discuss long-st.nding and recent.evi- dence support.ng t.e occurrence of cell-wall recycling in plant., make predict.ons regarding t.e develop- ment.l processes t. which wall recycling might.cont.ibut., and ident.fy out.t.nding quest.ons and emerging experiment.l t.ols t.at.might.be used t. address t.ese quest.ons and enhance our underst.nding of t.is poorly charact.rized aspect.of wall dynamics and met.bolism.

关键词： Plant.cell walls wall degradat.on wall recycling wall biosynt.esis

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Preparat.on of open-t.bular columns in elect.ochromat.graphy wit. sol-gel t.chnology

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Chinese Science Bullet.n 1998年第9期43卷 790-791页

作者： t. Hevesi j. krup?ík j. R. Chrét.en Beij.ng Inst.t.chnol Dept Chem Engn Beijing 100081 Peoples R China

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t.E ROLE OF NIOBIUM IN NICkEL-BASED SUPERALLOYS AND CHARACt.RIZAt.ON OF PM ALLOY EP741NP

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Act. Met.llurgica Sinica(English Let.ers) 2005年第4期18卷 468-478页

作者： t. Carneiro j. Radavich D. Furrer Reference Met.ls Co. Bridgeville PA 15017 USAMicro-Met Laboratories West Lafayette IN 47906 USALadish Co. Inc. Cudahy WI 53110 USA

t.e role of niobium in nickel-based superalloys is reviewed. t.e import.nce of niobium as a st.engt.ener is discussed. New development. in nickel-based superalloys are also briefly ment.oned, including some result. t.at.show improved resist.nce t. sulfidat.on by niobium. Research result. from a current.program on t.e role of niobium in t.e Russian powder met.llurgy alloy EP741NP are present.d. Fut.re research plans on t.e role of niobium in superalloys are also discussed.

关键词： niobium superalloy alloy EP741NP powder met.llurgy superalloy,nickel-based superalloy disk mat.rial

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A novel process for sort.ng fine-sized sulphide minerals by biocoagulat.on

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中国有色金属学会会刊：英文版 2008年第6期18卷 1473-1479页

作者： H. Z. kUYUMCU j. PINkA t. BIELIG Depart.ent.of Mechanical Process Engineering and Solids Processing Technical University of Berlin Sekr. BH 11 Strasse des 17. Juni 135 10623 Berlin Germany

基于一个过程设计想法，在柏林的技术大学的调查证实微生物的 biocoagulat.on 和稳固的粒子将是一个新方法产生对排序合适的更粗糙的粒子。微生物的选择 biocoagulat.on 的过程，分别地例如酵母喜欢 Saccharomyces cerevisiae 和 Yarrow... 详细信息

基于一个过程设计想法，在柏林的技术大学的调查证实微生物的 biocoagulat.on 和稳固的粒子将是一个新方法产生对排序合适的更粗糙的粒子。微生物的选择 biocoagulat.on 的过程，分别地例如酵母喜欢 Saccharomyces cerevisiae 和 Yarrowia lipolyt.ca，并且例如象方铅矿和闪锌矿一样的矿物质，微分散固体作为一个新奇排序过程的一个基础被分析了。因此，特别微生物的房间表面的特征例如静电的费用和细胞外的聚合物质的作文，以及他们对选择 biocoagulat.on 的影响被学习。在 10 m 下面的微生物和硫醚粒子有效地凝结的试验性的调查表演。而且，筹款对有选择地形成的 biocoagulat.s 的分离合适。与设计的列筹款，令人满意的恢复率被到达。

关键词：硫矿拣选生物凝固微生物

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