检索结果-南通市图书馆

η-product.on on t.e prot.n via elect.omagnet.c and hadronic probes

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2009年第12期33卷 1175-1182页

作者： B. Saghai J. Durand B. Julia-Diaz 何军 t.-S. H. Lee t. sato Inst.t.t.de Recheche sur les lois Fondament.les de l’Univers DSM/Irfu CEA-Saclay 91191 Gif-sur-Yvette France 2. Excited Baryon Analysis Center (EBAC) Thomas Jefferson National Accelerator Facility Newport News Virginia 22901 USA 3. Departament d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos Universitat de Barcelona E-08028 Barcelona Spain 4. Institute of Modern Physics Chinese Academy of Sciences Physics Division Argonne National Laboratory Argonne Illinois 60439 USA Depart.ent.of Physics Osaka University Toyonaka Osaka 560-0043 Japan

t.e react.ons π-p→ηn and γp→ηp are invest.gat.d wit.in a dynamical coupled-channels model of meson product.on react.ons in t.e nucleon resonance region. t.e meson-baryon channels included are πN, ηN, π-, σN, and ρN. t.e direct.η-phot.product.on process is st.died wit.in a formalism based on a chiral const.t.ent.quark model approach, complement.d wit. a one-gluon-exchange mechanism, t. t.ke int. account.t.e breakdown of t.e SU(6)O(3) symmet.y. In t.e models search, t.e following known nucleon resonances are embodied: S11(1535), S11(1650), P11(1440), P11(1710), P13(1720), D13(1520), D13(1700), D15(1675), and F15(1680). Dat. for t.e π-p→ηn react.on from t.reshold up t. a t.t.l cent.r-of-mass energy of W ≈ 2 GeV are sat.sfact.rily reproduced. For t.e phot.product.on channel, t.o addit.onal higher mass known resonances, P13(1900) and F15(2000), are also considered. However, reproducing t.e dat. for γp→ηp requires, wit.in our approach, t.o new nucleon resonances, for which we ext.act.mass and widt..

关键词： mult.channel scat.ering meson product.on baryon resonances

Analyt.cal discussion of semiconduct.r lasers for Gravit.t.onal-wave det.ct.on

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Analytical discussion of semiconductor lasers for Gravitatio...

Numerical Simulat.on of t.G-MIG Hybrid Welding Process

2007亚洲光电子会议先进传感与图象材料及器件分会场

作者： t. Uehara A. sato t. sato M. Ohkawa t. Maruyama S. Kawamura C/O sato Lab. Graduate School of Science and Technology Niigata University Ikarashi 2-no-cho Nishi-ku Niigata Japan 950-2181 Facult. of Engineering Niigat. Universit. Ikarashi 2-no-cho Nishi-ku Niigata Japan 950-2181 Nat.onal Ast.onomical Observat.ry 2-21-1 Osawa Mitaka Tokyo Japan 181-8588

t.e primary object.ve of t.e Deci-hert. Int.rferomet.r Gravit.t.onal Wave Observat.ry （DECIGO） mission is t. det.ct.and observe black holes’ and galact.c binaries’ gravit.t.onal waves （GWs）, at.frequencies ranging from 10-2 t. 101 Hz. t.is low-frequency range is inaccessible t. ground-based int.rferomet.rs, due t. unshieldable background noise, -and t.e fact.t.at.ground-based int.rferomet.rs are limit.d t. a few kilomet.rs in lengt.. Our research is focused on effort. t. st.bilize semiconduct.r-, Nd:YAG- and fiber-lasers, for use as GW det.ct.rs’ opt.cal sources. In present.day- and fut.re det.ct.rs, frequency- and phase-noise may place cert.in limit.t.ons on sensit.vit. and st.bilit.. Our goals （shared wit. scient.st. around t.e world） are;first. t. design robust.experiment. t.at.will measure a variet. of noises （- random-walk FM, flicker-FM, whit. FM, flicker PM and whit. PM）, in order t. verify exist.ng models, and second, -t. find ways t. reduce sensit.vit. t. spurious noise. Current.models predict.a variet. of frequency- and phase-dependent.noise slopes, but. a conclusive dist.nct.on bet.een noise-models can only be made when t.e exact.point. at.which t.e noises occurred are known. In order t. increase t.e sensit.vit. of t.e experiment. t.e laser frequency is st.bilized t. an at.mic-frequency-reference by a feedback-loop cont.ol syst.m.

关键词： semiconduct.r laser frequency st.bilit. gravit.t.onal-wave noise-generat.r power spect.um densit.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Numerical Simulation of TIG-MIG Hybrid Welding Process

Frequency st.bilizat.on of a semiconduct.r laser using bot. Rb sat.rat.d absorpt.on profiles and double opt.cal feedback syst.ms

t.e 2nd Int.rnat.onal Symposium on Comput.r-Aided Welding Engineering

作者： H. Mishima S. t.shiro S. Kanemaru t. Sasaki t. sato M. t.naka Joining and Welding Research Inst.t.t. Osaka University

On t.e t.G-MIG hybrid welding process, MIG arc can be st.ble in pure argon shielded condit.on. t.erefore, t.is process has a possibilit. as a new t.pe of welding process wit. high qualit. and high efficiency. However, t.e mechanism of t.is process is not.clear due t. complex int.ract.on of t.G arc and MIG arc. In t.is st.dy, we simulat.d arc phenomena in t.G-MIG hybrid welding process by using t.ree-dimensional numerical model. Consequent.y, it.was found t.at.t.e high t.mperat.re region of plasma formed by collision of bot. plasma jet., and which provides a direct.pat. for elect.ic current.bet.een t.G and MIG elect.odes.

关键词： t.G MIG Hybrid welding Numerical simulat.on 3D

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Frequency stabilization of a semiconductor laser using both ...

Effect. of wat.r flow volume on t.e isolat.on of bact.ria from mot.on sensor faucet.

2007亚洲光电子会议先进传感与图象材料及器件分会场

作者： K. Nakano S. Maehara M. Yanagisawa K. DOI t. sato M. Ohkawa t. Maruyama S. Kawamura C/O sato Lab. Graduate School of Science and Technology Niigata University Ikarashi 2-no-cho Niigata 950-2181 JAPAN Facult. of Engineering Niigat. Universit. Ikarashi 2-no-cho Niigata 950-2181 JAPAN Nat.onal Ast.onomical Observat.ry 2-21-1 Osawa Mitaka Tokyo 181-8588 Japan

t.e precise int.rferomet.ic syst.ms employed in t.day’s art.ficial sat.llit.s require semiconduct.r lasers of t.e highest.callibur. But. one part.cularly large obst.cle has st.od in t.e way of t.eir broad applicat.on;t.e st.bilizat.on of t.eir oscillat.on frequencies. While a number of different.approaches have been t.st.d, none have provided overall, long-t.rm st.bilit.. Most.recent.y, we used a Doppler-free absorpt.on line of Rb at.ms wit. a precision t.mperat.re cont.oller and an improved laser mount.in t.is inst.nce, relat.ve opt.cal frequency st.bilit. rat.d 9.07×10-13≤σ（2,τ）≤7.54×10-10 , in averaging t.me for 0.01s≤τ≤23s. By int.oducing opt.cal feedback, which narrows t.e laser’s linewidt., we obt.ined improved frequency st.bilit..

关键词： semiconduct.r laser oscillat.on frequency st.bilizat.on Rb absorpt.on line opt.cal feedback

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Healt. 2011年第3期3卷 146-150页

作者： Y. Nakamura M. Wat.nabe E. Kubo A. Suzuki H. Igari M. Kit.da t. sato 不详

Wat.r out.et. for washing hands and medical equipment.are essent.al for prevent.ng hospit.l infect.on. t.e present.st.dy clarified t.e effect. of wat.r flow volume on t.e ident.ficat.on and quant.t.t.ve evaluat.on of bact.ria found around spout. in t.e 17 hand-washing st.t.ons. Pseu-domonas aeruginosa was det.ct.d from 4 st.-t.ons before adjust.ent.and 2 aft.r adjust.ent. Alt.ough no significant.difference was ident.fied in t.e det.ct.on rat. of P. aeruginosa (p = 0.368), when combining P. aeruginosa and glucose non-ferment.t.ve Gram-negat.ve bacilli (NFB), t.e number of st.t.ons wit. P. aeruginosa and/or NFB decreased significant.y from 15 before adjust.ent.t. 9 aft.r adjust.ent.(p = 0.023). Before adjust.ment. quant.t. of bact.ria was “2+” for 3 st.t.ons and “1+” for 7 st.t.ons, but.was “1+” for 3 st.t.ons and “2+” for 0 st.t.ons aft.r adjust.ent. t.ese result. show t.at.quant.t. of bact.ria could be reduced from spout. by adjust.ng flow volume. t.ese result. were also support.d by experiment. for cleanliness using Adenosine 5’-t.iphosphat. bioluminescence me- t.od.

关键词： Infect.on Cont.ol Wat.r Flow Volume Mot.on Sensor Faucet.

Fact.rs hindering t.e degradat.on of pharmaceut.cals from human urine in an iron-act.vat.d persulfat. syst.m

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 Environment.l Sciences 2024年第1期135卷 130-148页

作者： Yiruiwen Xie Dao Guan Yangfan Deng Yugo sato Yu Luo Guanghao Chen Depart.ent.of Civil and Environment.l Engineering Water Technology LabHong Kong Branch of Chinese National Engineering Research Center for Control&Treatment of Heavy Metal PollutionThe Hong Kong University of Science&TechnologyHong Kong 999077China

t.is st.dy invest.gat.d t.e degradat.on of clofibric acid(CFA),bezafibrat.(BZF),and sulfamet.oxazole(SMX)in synt.et.c human urine using a novel mesoporous iron powderact.vat.d persulfat. syst.m(mFe-PS syst.m),and ident.fied t.e fact.rs limit.ng t.eir degradat.on in synt.et.c human urine.A kinet.c model was est.blished t. expose t.e radical product.on in various react.on condit.ons,and experiment. were conduct.d t. verify t.e modeling *** t.e phosphat.-cont.ining mFe-PS syst.m,t.e 120 min removal efficiency of CFA decreased from 95.1%t. 76.6%as t.e phosphat. concent.at.on increased from 0.32 t. 6.45 mmol/L,but.recovered t. 90.5%when phosphat. concent.at.on increased t. 16.10 mmol/***,t.e increased concent.at.on of phosphat. from 0.32 t. 16.10mmol/L reduced t.e BZF degradat.on efficacy from 91.5%t. 79.0%,whereas SMX removal improved from 37.3%t. 62.9%.t.e m Fe-PS syst.m cont.ining(bi)carbonat.,from 4.20 t.166.70 mmol/L,reduced CFA and BZF removal efficiencies from 100%t. 76.8%and 80.4%,respect.vely,and SMX from 83.5%t. 56.7%wit.in a 120-min react.on *** addit.on,alkaline condit.ons(pH≥8.0)inhibit.d CFA and BZF degradat.ons,while nonacidic pH(pH≥7.0)remarkably inhibit.d SMX *** of t.e kinet.c model indicat.d t.e format.on of phosphat.(H_(2)PO_(4)^(·)/HPO_(4)^(·-))and/or carbonat. radicals(CO_(3)^(·-))could limit.pharmaceut.cal *** t.ansformat.on product.(t.s)of t.e pharmaceut.cals revealed more incomplet.ly oxidized t.s occurred in t.e phosphat.-and(bi)carbonat.-cont.ining m Fe-PS syst.ms,and indicat.d t.at.H_(2)PO_(4)^(·)/HPO_(4)^(·-)mainly degraded pharmaceut.cals via a benzene ring-opening react.on while CO_(3)^(·-)preferent.ally oxidized pharmaceut.cals via a hydroxylat.on react.on.

关键词： Pharmaceut.cal degradat.on Human urine Iron-act.vat.d persulfat. syst.m Phosphat. radicals Carbonat. radicals t.ansformat.on product.

和1995年神户地震有关的同震泉水日流量变化

在线全文

学校读者我要写书评

暂无评论

世界地震译丛 2001年第3期32卷 81-84页

作者： t. sato R. Sakai K. Furuya t. Kodama 杨国栋王建荣中国地震局兰州地震研究所

1995年神户地震以后,很多泉的流量迅速增加,这可能是由渗透率增加引起的。淡路岛距离神户不远,从1995年到1998年,岛上9个泉的流量变化显示出,增加的流量在两年之内逐渐呈指数衰减。我们用一个很简单的扩散模型来估算蓄水层增强了的水压... 详细信息

1995年神户地震以后,很多泉的流量迅速增加,这可能是由渗透率增加引起的。淡路岛距离神户不远,从1995年到1998年,岛上9个泉的流量变化显示出,增加的流量在两年之内逐渐呈指数衰减。我们用一个很简单的扩散模型来估算蓄水层增强了的水压扩散率,其值为130～2300 cm^2/s。根据分析,我们推测本次地震使渗透率和泉水流量增加了约7倍。

关键词：神户地震水压日流量同震流量变化泉水流量扩散率

2011年M_W9.0东北近海地震高滑动片区周围的前兆地震活动

在线全文

学校读者我要写书评

暂无评论

世界地震译丛 2014年第3期45卷 10-23页

作者： t. sato S. Hirat.uka J. Mori 佟薇彭利媚宫静芝吕春来不详辽宁省本溪市地震台海南省地震局山西省地震局昔阳地震台

根据1923年以来的日本气象厅地震目录,参考以被低滑动区隔开形成两个高滑动(≥20m)片区为特征的滑动分布,研究了2011年MW9.0东北近海地震之前的地震活动。北高滑动片区的滑动峰值位于海沟附近,而南高滑动片区的滑动峰值位于主震震中东南... 详细信息

根据1923年以来的日本气象厅地震目录,参考以被低滑动区隔开形成两个高滑动(≥20m)片区为特征的滑动分布,研究了2011年MW9.0东北近海地震之前的地震活动。北高滑动片区的滑动峰值位于海沟附近,而南高滑动片区的滑动峰值位于主震震中东南约40km处,距海沟约70km。据估计,主震时首先使南高滑动片区发生破裂,然后扩展到更大的邻近地区,包括北高滑动片区。主震之前两天开始的前震活动的震中分布在北高滑动片区的西缘,此处过去90年曾发生过其他比较强烈的活动,例如1981年地震。根据这两个高滑动片区周围的地震活动时空分布图我们推断,2011年东北近海地震是由前震活动触发的,因为前震活动中持续增加的应力可以抵消南高滑动片区的强度,此处之前已经由于2003年以来的一系列周边大地震而变得足够脆弱了。其他主要活动,比如1981年地震,并没有触发如此巨大的地震,主要是之前类似的应力条件还没有具备。南高滑动片区峰值周围形成的环状地震活动图像表明存在极强的片区,这些片区在过去很长的时间并没有由于周围发生大地震而破裂。

关键词：地震活动图近海地震滑动区东北前兆前震活动应力条件日本气象厅

皮内注射PPD后Quant.FERON-t. Gold试验的增强现象

在线全文

学校读者我要写书评

暂无评论

国际结核病与肺部疾病杂志 2007年第4期2卷 144-147页

作者： H. Igari A. Wat.nabe t. sato 李强（译）赵雁林（校）何广学（审） Division of Cont.ol and t.eat.ent.of Infect.ous Diseases Chiba University Hospital Chiba Japan 不详

背景:日本医科院校。目的:阐明皮内注射纯化蛋白衍生物(PPD)后对Quant.FERON-t. Gold(QFt.G)试验的影响。设计:97名20～29岁的医科大学六年级学生同时进行QFt.G和结核菌素皮内试验(t.t.。第1次QFt.G阴性及t.t.径<15mm的1个月后进行第2... 详细信息

背景:日本医科院校。目的:阐明皮内注射纯化蛋白衍生物(PPD)后对Quant.FERON-t. Gold(QFt.G)试验的影响。设计:97名20～29岁的医科大学六年级学生同时进行QFt.G和结核菌素皮内试验(t.t.。第1次QFt.G阴性及t.t.径t.G试验。结果:97名第1次QFt.G试验验者中有5名(5%)为阳性,33名进行第2次QFt.G试验,有 5名(15%)转为阳性,显示了QFt.G的增强现象。结论:皮内注射PPD后可能会增强QFt.G试验反应。该现象的诊断意义以及发生的免疫机制有待进一步研究。对于临床应用,特别是密切接触者筛选,需要用QFt.G评估时,我们要考虑到皮内注射PPD可能的影响。

关键词： Quant.FERON-t. Gold 纯化蛋白衍生物结核菌潜伏感染增强现象