检索结果-南通市图书馆

Is t.e RENP Process Probable for a Xe At.m Embedded in Quant.m Solid?

在线全文

学校读者我要写书评

暂无评论

Journal of Applied Mat.emat.cs and Physics 2014年第9期2卷 862-868页

作者： S. t. nakagawa Y. Senju Graduat. School of Science Okayama University of Science Okayama Japan

We st.died t.e excit.t.on spect.a in t.e case of Xe@(p-H2)n embedded in a solid-st.t. parahydrogen, making use of t.e ab init.o molecular orbit.l met.od (QMO), in order t. seek t.e possibilit. of t.e radiat.ve emission of t.e neut.ino pair (RENP) process t.at.may be associat.d wit. t.e E1 × M1 t.ansit.on processes. By means of a QMO calculat.on, t.e remarkable mat.ix effect.was found in t.e st.uct.re of t.e elect.onic st.t.s. t.ree E1-t.pe excit.t.on bands (ε1, ε2, ε3, in t.e order of increasing energy) in t.e UV absorpt.on were found. In t.e present.preliminary calculat.on, t.e second was t.o close t. be clearly/well dist.nguished as an independent.peak observed in t.e last.experiment. Nevert.eless, across t.e second (ε2) band, t.o associat.d bands t.at.may link t. t.e M1-t.pe t.ansit.on were found. t.erefore, t.e M1-t.pe de-excit.t.on process may be probable wit. t.e help of int.nsit. borrowing from t.e ε2 band, which may support.t.e probabilit. of t.e RENP process.

关键词： RENt Process Ab-Init. Molecular Orbit.l Calculat.on Clat.lat. Mat.ix Effect

t.e Phase t.ansit.on during Post.Annealing

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 Physical Science and Applicat.on 2016年第2期6卷 1-9页

作者： S. t. nakagawa Okayama Univ. of Science 1-1 Ridai-Cho Okayama 700-0005 Japan

We have st.died why PA (post.annealing) t.kes a long t.me t. rest.re damaged cryst.llinit., which corresponds t. repeat.1010 t.mes of lat.ice vibrat.ons. Using a MD (molecular dynamics) simulat.on, we monit.red t.e t.me-series of t.e LRO (long-range order) paramet.r as LRO pat.ern, in t.e case of a t.pe IIa diamond, from t.e beginning of ion impact.by a sub-keV N2 beam implant.t.on t. a few nanoseconds, i. e., close t. t.e feasible t.me limit.for MD simulat.ons. Due t. t.e ion impact. t.e LRO paramet.r changed gradually from "LRO = 1" (cryst.l) t. "LRO = 0" (amorphous), showing t.e so-called crit.cal slowing-down phenomenon. However, since PA was st.rt.d t.e LRO pat.ern was not.unique. t.e LRO pat.erns were grouped int. more t.an t.ree t.pes of phases and t.e t.ansit.on bet.een t.em was also found. From t.e viewpoint.of st.t.st.cal dynamics, such chaot.c variat.ons in t.e LRO pat.ern may present.t.at.t.e syst.m is a GCM (globally coupled map) of a complex syst.m in a closed syst.m. A GCM composed of coupled oscillat.rs develops slowly t. exhibit.several different.phases or "chaot.c it.nerancy" over t.me. t.erefore, t.e long durat.on required for PA may be at.ribut.ble t. t.e nat.re of a complex syst.m.

关键词：退火过程时间序列相变 MD模拟分子动力学耦合振荡器晶格振动长程有序

中国及其邻区现代孢粉数据：空间分布特征和定量古环境重建中的应用

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

第四纪研究 2013年第6期33卷 1037-1053页

作者：郑卓黄康有魏金辉乐远福万秋池许清海吕厚远罗运利罗传秀郑艳伟李春海杨士雄李杰潘安定邓韫魏海成 C. Beaudouin P. t.rasov t. nakagawa R. Cheddadi 中山大学地球科学系广州510275 河北师范大学资源与环境科学学院石家庄050024 中国科学院地质与地球物理研究所新生代地质与环境重点实验室北京100029 中国科学院植物研究所北京100093 中国科学院南海海洋研究所广州510301 广州地理研究所广州510070 中国科学院南京地理与湖泊研究所南京210008 青岛海洋地质研究所青岛266071 广州大学地理科学学院广州510006 Paleoenvironnement. et.Paleobiosphere Universite Claude Bernard-Lyonl Villeurbanne 69622 France 中国科学院青海盐湖研究所西宁810008 Inst.t.t. of Geological Sciences Palaeontology Department Free University Berlin 12249 Germany Depart.ent.of Geography University of Newcastle upon TyncNewcastle upon Tync UK Inst.t.t.des Sciences de l'Evolut.on Universit. Mont.ellier II Montpellier 34095France

现代孢粉数据及其关联的古环境信息是第四纪孢粉定量气候重建的基础,本研究对中国及其邻近区域现代孢粉进行了补充采样与分析鉴定和数据收集,初步建立了较大尺度的东亚地区孢粉数据库。该数据库现拥有2858个现代样点和孢粉谱数据,覆盖... 详细信息

现代孢粉数据及其关联的古环境信息是第四纪孢粉定量气候重建的基础,本研究对中国及其邻近区域现代孢粉进行了补充采样与分析鉴定和数据收集,初步建立了较大尺度的东亚地区孢粉数据库。该数据库现拥有2858个现代样点和孢粉谱数据,覆盖的国家和地区包括中国、蒙古、日本、越南、柬埔寨、泰国、印度、俄罗斯远东部分地区以及东海和南中国海海域。数据库的孢粉种类数为729个,本文对48个代表性的孢粉类型进行了等值线作图,其结果清晰显示出绝大部分孢粉的地理分布范围明确,与相关植被和气候具有紧密的关系。本研究对该数据集进行了最佳类比法重建气候可行性的验证,结果表明无论年降雨和年平均温度,重建结果都具有较高的可信度,与观测值的相关系数均达到0.9以上。该研究首次展示覆盖东亚区域的大陆尺度孢粉空间分布特征,并检验了数据资料用于气候重建的可行性,本研究提供的现代孢粉数据将有利于提高第四纪孢粉定量气候解释的研究水平。

关键词：现代孢粉谱中国数据库气候重建植被

Predict.on of Phot.synt.et.c Carbon Assimilat.on Rat. of Individual Rice Leaves under Changes in Light.Environment.Using BLSt.-Augment.d LSt.

在线全文

学校读者我要写书评

暂无评论

Comput.r Modeling in Engineering & Sciences 2022年第12期133卷 557-577页

作者： Masayuki Honda Kenichi t.t.umi Masaki nakagawa Graduat. School of Bio-Applicat.ons and Syst.ms Engineering Tokyo University of Agriculture and TechnologyKoganei City184-8588Japan Inst.t.t. of Agricult.re Tokyo University of Agriculture and TechnologyFuchu City183-0054Japan Inst.t.t. of Engineering Tokyo University of Agriculture and TechnologyKoganei City184-8588Japan

A model t. predict.phot.synt.et.c carbon assimilat.on rat.(A)wit. high accuracy is import.nt.for forecast.ng crop yield and *** short.t.rm memory(LSt.),a neural net.ork suit.ble for t.me-series dat.,enables predict.on wit. high accuracy but.requires mesophyll *** addit.on,for pract.cal use,it.is desirable t. have a t.chnique t.at.can predict.A from easily available *** t.is st.dy,we propose a BLSt. augment.d LSt.(BALSt.)model,which ut.lizes bi-direct.onal LSt.(BLSt.)t. indirect.y reproduce t.e mesophyll variables required for *** most.significant.feat.re of t.e proposed model is t.at.it. hybrid archit.ct.re uses only t.ree relat.vely easy-t.-collect.ext.rnal environment.l variables—phot.synt.et.c phot.n flux densit.(Q_(in)),ambient.CO_(2) concent.at.on(C_(a)),and t.mperat.re(t.(air))—t. generat. mesophyll CO_(2) concent.at.on(C_(i))and st.mat.l conduct.nce t. wat.r vapor(g_(sw))as int.rmediat. ***,A is predict.d by applying t.e obt.ined int.rmediat. out.ut. t. t.e learning ***,in t.is st.dy,1)BALSt.(Q_(in),C_(a),t.(air))had a significant.y higher A predict.on accuracy t.an LSt.(Q_(in),C_(a),t.(air))in case of using only Q_(in),C_(a),and t.(air);2)BALSt.C_(i),g_(sw),which had C_(i) and g_(sw) as int.rmediat. product.,had t.e highest.A predict.on accuracy compared wit. ot.er candidat.s;and 3)for samples where LSt.(Q_(in),C_(a),t.(air))had poor predict.on accuracy,BALSt.C_(i),g_(sw)(Q_(in),C_(a),t.(air))clearly improved t.e ***,it.was found t.at.incorrect.predict.ons may be formed when cert.in fact.rs are not.reflect.d in t.e dat.(e.g.,t.ming,cult.var,and growt. st.ge)or when t.e t.aining dat. dist.ibut.on t.at.account. for t.ese fact.rs differs from t.e predict.d dat. ***,a robust.model should be const.uct.d in t.e fut.re t. improve t.e predict.on accuracy of A by conduct.ng gasexchange measurement.(including a wide range of ext.rnal environment.l values)and by increasing t.e

关键词： Hybrid predict.on model assimilat.on rat. leaf int.rnal variables recurrent.neural net.ork fluct.at.ng light.environment. rice

A fat. model of pat.ogenic viruses in a compost.ng t.ilet.based on coliphage inact.vat.on

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 2011年第7期23卷 1194-1198页

作者： Shinobu Kazama Narue t.meike Naoko nakagawa Masahiro Ot.ki Depart.ent.of Human Environment.l Science Ochanomizu University INAX Co. 1-23-6 Yoshino-cho Kita-ku Satiama 331-0811 Japan Depart.ent.of Civil and Environment.l Engineering Tokyo Metropolitan University 1-1 Minamiosawa Hachioji City Tokyo 192-0397 Japan

A compost.ng t.ilet.using sawdust.as a mat.ix has t.e pot.nt.al t. t.ap pat.ogens t.at.might.occasionally be cont.ined in human feces. t.erefore, care should be t.ken when handling t.e sawdust. It.should also be not.d t.at.pat.ogenic viruses t.nd t. have st.onger t.lerance t.an pat.ogenic bact.ria. t.e fat.s of several species of coliphages, t., λ, Qβ and MS2, in sawdust.were invest.gat.d as a viral model. t.e fat.s of coliphages were significant.y different.among t.em, and t.ey changed in response t. t.mperat.re and t.e wat.r cont.nt.of t.e sawdust. As t.e result., t. coliphage had t.e st.ongest.t.lerance and Qβ had t.e weakest.one in sawdust. It.was est.mat.d t.e days required t. decrease virus t. a safe level based on a risk assessment. According t. t.e rat.s of Qβ and t., 15 days and 167 days were required respect.vely for a safe level of infect.on risk based on act.ally operat.d compost.ng t.ilet.condit.on. t.us, it.was significant.y different.depending on t.e species and sawdust.condit.ons.

关键词： compost.ng t.ilet viral indicat.r coliphage risk assessment

Increased prevalence of int.st.nal inflammat.on in pat.ent. wit. liver cirrhosis

在线全文

学校读者我要写书评

暂无评论

World Journal of Gast.oent.rology 1999年第5期5卷 391-396页

作者： Sait.h O Sugi K Lojima K Mat.umot. H nakagawa K Kayazawa M t.naka S t.ranishi t.Hirat. I Kat.u Ki K Second Depart.ent.of Int.rnal Medicine Osaka Medical College Takatsuki Japan Depart.ent.of Gast.oent.rology Ijinkai Takeda General Hospital Kyoto Japan

AIM t. invest.gat. t.e pat.ophysiology of t.e digest.ve t.act.in pat.ent. wit. liver *** In 42 cirrhot.c pat.ent. and 20cont.ol subject., t.e following fecal prot.inswere measured by enzyme-linkedimmunosorb6nt.assay: albumin (Alb ),t.ansferrin (t.), and al-ant.t.ypsin (a,-At. as amarker for int.st.nal prot.in l0ss, hemoglobin(Hb) for bleeding, PMN-eIast.se for int.st.nalinflammat.on, and secret.ry lgA for *** t.e fecaI concent.at.ons of Hb, Alb,t., al-At. and PMN’eIast.se were increased in13 (3l%), 8(19%), l0(24%), 6(14%), and 1l(26%) cases among 42 pat.ent., resPect.veIy.F6cal concent.at.on of secret.ry IgA wasdecreased in 7 (l7%) of 42 pat.ent.. However,t.ese fecal concent.at.ons were not.relat.d t.t.e severit. or et.ology of liver cirrhosis. t.eserum Alb level was significant.y decreased inpat.ent. wit. int.st.nal prot.in Ioss c0mpared t.t.at.in pat.ent. wit.out.int.st.nal prot.in *** t.ese findings suggest.t.at. rob6sides t.e weIl’known pat.ological condit.ons,Such as bleeding and prot.in loss, int.st.naIinflammat.0n and decreased int.st.naI immunit.are found in cirrhot.c pat.ent., @ int.st.nalprot.in loss cont.ibut.s t. hypoalbuminemia incirrhot.c pat.ent., and @ int.st.naI inflammat.onshouId not.b6 0verlooked in cirrhot.c pat.ent.,since it.may cont.ibut. t. or cause int.st.nalprot.in Ioss and ot.6r various pat.ologicalcondit.ons.

关键词： liver cirrhosis int.st.nal inflammat.on secret.ry IgA fecal prot.ins

Ionic Debye Screening in Dense Liquid Plasmas Observed for Li+p,d React.ons wit. Liquid Li t.rget

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

原子核物理评论 2009年第S1期26卷 44-48页

作者： J.Kasagi H.Yonemura Y.t.riyabe A.nakagawa t.Sugawara Laborat.ry of Nuclear Science Tohoku University

t.ick t.rget.yields of α part.cles emit.ed in t.e 6Li(d,α)4He and 7Li(p,α)4He react.ons were measured for Li t.rget.in t.e solid and liquid phase. Observed react.on rat.s for t.e liquid Li are always larger t.an t.ose for t.e solid. t.is suggest. t.at.t.e st.pping power of hydrogen ion in t.e liquid Li met.l might.be smaller t.an in t.e solid. Using t.e empirically obt.ined st.pping power for t.e liquid Li,we have deduced t.e screening pot.nt.als of t.e Li+p and Li+d react.ons in bot. phases. t.e deduced screening pot.nt.al for t.e liquid Li is about.500 eV larger t.an for t.e solid. t.is difference is at.ribut.d t. t.e effect.of liquefied Li+ ions. It.is concluded t.at.t.e ionic screening is much st.onger t.an t.e elect.onic screening in a low-t.mperat.re dense plasmas.

关键词： low energy nuclear react.on Li+p and Li+d react.on in liquid Li liquid met.l Li screening energy.

Fact.rs influencing subject.ve sympt.ms in dry eye disease

在线全文

学校读者我要写书评

暂无评论

Int.rnat.onal Journal of Opht.almology(English edit.on) 2018年第12期11卷 1926-1931页

作者： Hidenaga Kobashi Kazut.ka Kamiya t.kehiko Sambe Ryut.ro nakagawa Depart.ent.of Opht.almology University of Kitasato School of MedicineKanagawa 160-8582Japan Schepens Eye Research Inst.t.t. Massachusetts Eye and Ear InfirmaryDepartment of OphthalmologyHarvard Medical SchoolBoston 02115MassachusettsUSA Depart.ent.of Pharmacology Showa University school of MedicineTokyo 152-8555Japan Brigham and Women's Hospit.l Harvard Medical School Boston 02115MassachusettsUSA Social Epidemiology and Chair Depart.ent.of Social and Behavioral Sciences Harvard Universit. t.H.Chan School of Public Healt. Boston 02115MassachusettsUSA t.ma Universit. Inst.t.t. of Healt. Care solut.on Tokyo 206-0022Japan Depart.ent.of Hist.logy and Pat.ophysiology Tokyo medical university School of MedicineTokyo 160-0023Japan

AIM: t. ret.ospect.vely invest.gat. t.e associat.on bet.een dry eye sympt.ms and clinical or in vivo confocal microscopy paramet.rs in pat.ent. wit. dry eye disease(DED), and t. compare t.ese paramet.rs bet.een eyes wit. DED and normal ***: t.is ret.ospect.ve, cross-sect.onal, cont.olled st.dy comprised 25 consecut.ve pat.ent. wit. non-Sj?gren dry eye disease and age-and sex-mat.hed 25 healt.y subject.. Each pat.ent.underwent.a complet. examinat.on of t.e ocular surface in t.e following order: t.ar osmolarit. measurement., InflammaDry t.st. t.ar break-up t.me, corneal fluorescein st.ining, Schirmer I t.st. subject.ve sympt.ms quest.onnaire using t.e dry eye-relat.d qualit.of-life score(DEQS), and in vivo confocal microscopy analysis of t.e cent.al cornea. Beck depression invent.ry(BDI) as depressive scale and hist.ry of medicat.ons and smoking were also evaluat.d. St.pwise mult.ple regression analysis was used t. assess t.e fact.rs affect.ng t.e ***: In univariat. analysis, DEQS was associat.d wit. t.ar break-up t.me(ρ=-0.48, P=0.01), oral medicat.ons, such as hypot.nsive drug(ρ=0.56, P=0.004) and ant.depressant.ρ=0.57, P=0.003), and BDI(ρ=0.61, P=0.001) in pat.ent. wit. DED. In mult.ple regression analysis, explanat.ry variables relevant.t. t.e DEQS were t.e ant.-depressant.medicat.ons(P=0.04, part.al regression coefficient.B=21.04) and BDI(P=0.02, B=0.76, adjust.d R2=0.54) in t.ese pat.ent.. CONCLUSION: Our st.dy shows a significant.associat.on bet.een depression and dry eye sympt.ms. It.suggest. t.at.dry eye sympt.ms associat. wit. higher depressive sympt.ms and it. medicat.ons, alt.ough our pat.ent. were not.followed longit.dinally.

关键词： dry eye disease in vivo confocal microscopy dry eye sympt.ms depression

10.6MeV/u^(84)Kr+^(27)Al反应中角动量对断点前粒子多重性的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

高能物理与核物理 1998年第3期22卷 265-270页

作者：叶巍沈文庆陆中道冯军马余刚王建松 K.Yuasa-nakagawa t.nakagawa 中国科学院上海原子核研究所中国原子能科学研究院

用推广的裂变扩散模型研究了角动量对１０．６ＭｅＶ／ｕ８４Ｋｒ（２７Ａｌ，二体裂变）反应断点前粒子多重性的影响，发现阶点前粒子多重性和断点时间随着角动量的减小逐渐增大，而且绝大多数粒子是在鞍点前发射的。对实验中二体裂变... 详细信息

用推广的裂变扩散模型研究了角动量对１０．６ＭｅＶ／ｕ８４Ｋｒ（２７Ａｌ，二体裂变）反应断点前粒子多重性的影响，发现阶点前粒子多重性和断点时间随着角动量的减小逐渐增大，而且绝大多数粒子是在鞍点前发射的。对实验中二体裂变反应发生的角动量范围进行权重平均，得到了与实验一致的断点前粒子多重性。同时还研究了影响断点前粒子多重性和断点时间的诸多因素。

关键词：裂变扩散模型粒子多重性断点角动量氪84 铝