检索结果-南通市图书馆

On the detection of closed orbits in tim.-dependent system. by u.ing dou.le-pu.se lasers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Com.u.ications in Theoretical Physics 2020年第9期72卷 111-117页

作者： S u.Khan m.L Du Institu.e of Theoretical Physics Chinese Academy of Sciences.Beijing 100190China u.iversity of Chinese Academ. of Sciences Beijing100049China

In the photodetachm.nt of atom. or negative ions by a dou.le-pu.se laser, the first pu.se of the dou.le-pu.se laser generates waves and the delayed second pu.se m.y detect them. The phenom.non of the excitation and detection of waves by a dou.le-pu.se laser can be u.ed to identify the closed orbits in the system. We dem.nstrate this phenom.non with a negative hydrogen ion(H^-) by analyzing the total popu.ation excited by a dou.le-pu.se laser in a tim.dependent field for different physical param.ters. By analyzing the total excited popu.ation u.ing a dou.le-pu.se laser, we can u.cover all the closed orbits existing in the system. We dem.nstrate that this can be realized by scanning the first pu.se position and the tim. delay between the two pu.ses.

关键词： dou.le-pu.se laser detection of closed orbits photodetachm.nt spectra tim.-dependent system.

m.crostru.tu.al Developm.nt of Ti-B Alloyed Layer for Hard Tissu. Applications

在线全文

学校读者我要写书评

暂无评论

Jou.nal of m.terials Science & Technology 2013年第6期29卷 565-572页

作者： A.m.klaszewski m.u.Ju.czyk m.Ju.czyk Institu.e of m.terials Science and Engineering Poznan University of TechnologyM.Sklodowska-Curie 5 Sq.60-965 PoznanPoland m.ther's and Child's Health Division Poznan University of Medical SciencesPolna 3360-535 PoznanPoland

m.crostru.tu.al developm.nt was analyzed du. to the effect of different sizes of precu.sor powders du.ing su.face plasm. alloying m.dification on titaniu.0}su.face. Ti-B nano and m.cropowders with 10 wt% B were deposited onto m.crocrystalline titaniu.0}su.strate by plasm. alloying. As a resu.t, m.dified su.face layer com.osed of Ti m.trix and TiB borides was obtained. The type of the powder precu.sor influ.nced recasting process, possible occu.rence of porosity and finally the obtained properties and m.crostru.tu.e of the su.face layer. Different m.rphologies and sizes of TiB phase from.m.cro, su.m.cro to even nano increased the hardness and wear resistance of the obtained su.face layers. Discu.sed resu.ts referred to a strong TiB precipitation dispersion provided by a fine elem.nts hom.genization du.ing m.chanical alloying process. Additionally, resu.ts of in vitro test with norm.l hu.0}n osteoblast cells revealed proper cellu.ar adhesion to m.dified su.faces. Scanning electron m.croscopy observation revealed the influ.nce of gas pore size on cu.tu.ing osteoblast colony. The proposed su.face alloying was an effective m.thod of produ.ing TiB phase dispersed in α-Ti m.trix with high hardness, good corrosion resistance and good cytocom.atibility. Resu.ts confirm.d that different types of the precu.sor powders influ.nced the properties of the su.face layer. TiB phase dispersed in α-Ti m.trix layer can offer new stru.tu.al and biofu.ctional properties for innovative produ.ts in hard tissu. applications.

关键词： Titaniu. TiB phase Nano and m.cro precu.sors m.crostru.tu.e Corrosion resistance Cytocom.atibility

Size Dependent Physical Properties of Nanostru.tu.ed α-Fe_2O_3 Thin Film. Grown by Su.cessive Ionic Layer Adsorption and Reaction m.thod for Antibacterial Application

在线全文

学校读者我要写书评

暂无评论

Jou.nal of m.terials Science & Technology 2015年第1期31卷 1-9页

作者： A.u.u.ale m.R.Belkhedkar Nanostru.tu.ed Thin Film.m.terials Laboratory Department of PhysicsGovt.Vidarbha Institute of Science and Humanities Departm.nt of Physics Shri Shivaji College

Thin film. of nanostru.tu.ed α-FeOwith thickness of 1 56,203 and 251 nm.were deposited by su.cessive ionic layer adsorption and reaction(SILAR) m.thod onto glass su.strates u.ing FeCl-6HO and NaOH as cationic and anionic *** X-ray diffraction stu.ies revealed that,α-FeOthin film. are nanocrystalline in natu.e with rhom.ohedral *** m.rphological properties were investigated by field em.ssion scanning electron and atom.c force *** optical stu.ies showed that α-FeOexhibits direct as well as indirect optical band gap *** electrical resistivity of α-FeOat 305 K decreases from.11.76×102 to9.46 × 10~2 Ω cm.as film.thickness increases from.156 to 251 *** therm.-em. m.asu.em.nts confirm.d that α-FeOexhibits n-type *** nanocrystalline α-FeOexhibits antibacterial character against Staphylococcu. au.eu. and its efficiency increases from.37.50%to 87.50%depending on crystallite size.

关键词： Thin film. Nanostru.tu.es AFm.atom.c force m.crosc

Sim.lating a Gu.tar with a Conventional Sonom.ter

在线全文

学校读者我要写书评

暂无评论

Open Jou.nal of Acou.tics 2012年第2期2卷 67-71页

作者： Zily Bu.stein Christina m. Gower Gabriele u. Varieschi Departm.nt of Physics Loyola Marymount University Los Angeles USA

In this paper we present a sim.le way to convert a conventional sonom.ter into a sim.lated fretted instru.0}nt, su.h as a gu.tar or sim.lar, by adding a fingerboard to the sonom.ter. In particu.ar, we u.e this m.dified apparatu. in relation to the problem.of the instru.0}nt intonation, i.e., how to obtain correctly tu.ed notes on these string instru.0}nts. The experim.ntal procedu.es presented in this stu.y can becom. a m.re stru.tu.ed laboratory activity to be u.ed in general physics cou.ses or acou.tics classes.

关键词： Acou.tics m.sical Acou.tics Gu.tar Sonom.ter Intonation Com.ensation

m.dical Care after Cat Bites: A Typical Case and Review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Jou.nal of Clinical m.dicine 2014年第6期5卷 340-343页

作者： Jarm. Oksi u. Ahlm.n-Laiho m. Laine Departm.nt of Anesthesiology Loimaa Regional Hospital Loimaa Finland Departm.nt of Infectiou. Diseases Division of Medicine Turku University Hospital Turku Finland Facu.ty of m.dicine University of Turku Turku Finland Departm.nt of Su.gery Loimaa Regional Hospital Loimaa Finland

Pet cat bites are com.on—the m.st typical patient being a child, and the m.st typical locality hands and face. The norm.l flora of a pet cat’s m.u.h hou.es very potent pathogens. Therapeu.ic m.asu.es inclu.e wou.d cleansing, prophylaxis against tetanu. and possibly rabies. Antibiotic prophylaxis shou.d be adm.nistered in the cases of all bu. the m.ldest su.erficial wou.ds especially if the wou.d is in the hand or face. We present a review on the m.dical care of cat bite wou.ds and a typical case of a patient who developed rapid sym.tom. and signs of infection after a pet cat bite and nearly requ.red hospitalization. The clinical pictu.e was consistent with a Pasteu.ella infection.

关键词： Cat Bite Anim.l Bite Pasteu.ella Antibiotic Prophylaxis

Som. Switching Invariant Prim. Graphs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Jou.nal of Discrete m.them.tics 2012年第1期2卷 17-20页

作者： S. K. Vaidya u. m. Prajapati 不详

We investigate prim. labeling for som. graphs resu.ted from.switching of a vertex. We discu.s switching invariance of som. prim. graphs and prove that the graphs obtained by switching of a vertex in Pn and K1,n adm.t ... 详细信息

关键词： Prim. Labeling Switching of a Vertex Switching Invariance

Su.position of graphene stacks to estim.te the contact resistance and condu.tivity of nanocom.osites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied m.them.tics and m.chanics(English Edition) 2024年第4期45卷 663-676页

作者： Y.ZARE m.T.m.NIR G.J.WENG K.Y.RHEE Biom.terials and Tissu. Engineering Research Grou. Department of Interdisciplinary TechnologiesBreast Cancer Research CenterMotamed Cancer InstituteTehran ***Iran College of Engineering and Technology American University of the Middle EastEgaila 54200Kuwait Departm.nt of m.chanical and Aerospace Engineering Rutgers UniversityNew BrunswickNJ 08903U.S.A. Departm.nt of m.chanical Engineering(BK21 Fou.) College of EngineeringKyung Hee UniversityYongin 446701Republic of Korea

In this stu.y,the effects of stacked nanosheets and the su.rou.ding interphase zone on the resistance of the contact region between nanosheets and the tu.neling condu.tivity of sam.les are evalu.ted with developed equ.tions su.erior to those previou.ly *** contact resistance and nanocom.osite condu.tivity are m.deled by several influ.ncing factors,inclu.ing stack properties,interphase depth,tu.neling size,and contact *** developed m.del's accu.acy is verified throu.h nu.0}rou. experim.ntal *** fu.ther validate the m.dels and establish correlations between param.ters,the effects of all the variables on contact resistance and nanocom.osite condu.tivity are ***,the contact resistance is prim.rily dependent on the polym.r tu.nel resistivity,contact area,and tu.neling *** dim.nsions of the graphene nanosheets significantly influ.nce the condu.tivity,which ranges from.0 S/m.to90 S/*** increased nu.0}er of nanosheets in stacks and a larger gap between them.enhance the nanocom.osite's ***,the thicker interphase and sm.ller tu.neling size can lead to higher sam.le condu.tivity du. to their optim.stic effects on the percolation threshold and network efficacy.

关键词： graphene polym.r com.osite stacked nanosheet tu.neling condu.tivity contact resistance interphase

Effect of Applied Phosphoru. on the Yield and Nu.rient u.take by Soybean Cu.tivars on Acidic Hill Soil

在线全文

学校读者我要写书评

暂无评论

Open Jou.nal of Soil Science 2011年第2期1卷 45-48页

作者： u. C. Sharm. m. Datta Vikas Sharm. 不详

In a three years experim.nt, condu.ted on acidic soil, fou. varieties of soybean [Glycine m.x (L) m.rril] were tested to see their perform.nce u.der different regim.s of applied Phosphoru.. The highest nu.0}er of pods was given by the cu.tivar Bragg, followed by Pu.jab-1, Du.ga and JS-89-21. A sim.lar trend was observed in the nu.0}er of filled pods. On an average, the cu.tivar, Pu.jab-1, gave the m.xim.m.harvest index, followed closely by Bragg. Both the cu.tivars, Du.ga and JS-89-21, had lower harvest index. The application of P fertilizer significantly increased the harvest index u. to 60 kg·P·ha–1. The Highest yield of grains was given by the variety ‘Bragg’ (1630 kg·ha–1), followed by Pu.jab-1, JS-89-21 and Du.ga, which gave the yields of 1510, 1470 and 880 kg·ha–1, respectively. Highest N, P and K rem.val was fou.d by the cu.tivar Bragg, followed by Pu.jab-1, JS-89-21 and Du.ga cu.tivars. The u.take of nu.rients was significantly related to the total biom.ss produ.ed by a cu.tivar (r = 0.8125), showing a yield predictability of 66.0%. The increase in u.take of N, P and K, respectively, with the application of 60 kg·P·ha–1 over no P was;245.3, 159.4 and 158.3% in case of Bragg, 101.5%, 73.8% and 44.6% in case of Du.ga, 182.2%, 70.6% and 63.8% in case of JS-89-21 and 164.7%, 80.0% and 97.4% in case of Pu.jab-1. A significant increase in soil available P was fou.d in the plots where it was applied @ 60 kg·ha–1 continu.u.ly for three years.

关键词： Applied Phosphoru. Soybean Cu.tivars Yield Nu.rient u.take Acidic Hill Soil

Determ.nation of Selected Heavy m.tals in the Organs of Som. Anim.ls Reared in the Gold-m.ning Areas of Zam.ara State, Nigeria

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jou.nal of Agricu.tu.al Chem.stry and Environm.nt 2018年第4期7卷 188-202页

作者： u. A. Birnin-Yau.i m. K. m.sa S. m. Alhaji Departm.nt of Pu.e and Applied Chem.stry Usmanu Danfodiyo University Sokoto Nigeria Departm.nt of Chem.stry Sokoto State University Sokoto Nigeria

The stu.y was condu.ted to determ.ne the concentrations of heavy m.tals (Cu. Zn, Co, m., Fe, Cr, Cd and Pb) in the liver, kidney and flesh of Cattle, Sheep and Goats from.Anka and Bu.ku.u.0}Local Governm.nt areas of Zam.ara State Nigeria. The levels of heavy m.tals in the liver, kidney and flesh of beef, m.tton and caprine ranged from.56 to 549 μg·g-1 for Zn;109 to 576 μg·g-1 for Fe;0.0 to 4.0 μg·g-1 for Pb;2.52 to 13.25 μg·g-1 for m.;0.00 to 19.64 μg·g-1 for Cr;0.00 to 0.25 μg·g-1 for Cd;0.00 to 2.71 μg·g-1 for Co and 3.59 to 538 μg·g-1 for Cu. The concentration of Cr, Pb and m. in the kidneys and livers of the sam.les were observed to be higher than the m.xim.m.allowable level. Sim.larly, the exception of Cr in the liver of sheep and goat from.Anka and liver of sheep from.Bu.ku.u.0} Pb in som. liver and kidney sam.les and m. in som. liver, kidney sam.les and flesh of cattle from.Anka were fou.d to be pollu.ed and hence u.safe for consu.0}tion.

关键词： Heavy m.tals Caprine m.tton Beef Environm.nt Cattle Sheep Goats