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CCAST“胶球和新强子态”研讨会

作者： h.gao Laboratory for Nuclear Science and Department of Physics Massachusetts Institute of TechnologyU.S.A.

＜正＞The first measurement of the differential cross section from d（γ,p）n reaction upto 4.0 GeV were performed at the Thomas Jefferson National Accelerator Facility（TJNAF,formerly CEBAF）.Bremsstrahlung photons from an electron beam im-pinging on a copper radiator and a liquid deuterium target were employed for *** experiment was performed in hall C where the photo-protons atforward angles in the center-of-mass were detected in the high Momentum Spec-trometer（hMS）and photo-protons at backward angles were detected in the ShortOrbit Spectrometer（SOS）.The bremsstrahlung photon energy was reconstructedfrom the measured proton momentum and angle using the two-body *** report cross section results at proton center-of-mass angles of 36°、53°、69°and 89°.The 90° data continue to show the constituent-counting-rule behavior upto 4 GeV The results are compared with models based on QCD as well as thosebased on meson-exchange theories.

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Neutron structure studies with a high pressure polarized 3he target

Neutron structure studies with a high pressure polarized 3He...

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CCAST“胶球和新强子态”研讨会

作者： h.gao Laboratory for Nuclear Science and Department of Physics Massachusetts Institute of Technology Cambridge MA 02139U.S.A.

Quantum chromodynamics is a theory of strong interaction in terms of quark andgluon degrees of *** the structure of matter at the level of quarkand gluon is one of the main scientific missions of the new electron acceleratorfacility:the Thomas Jefferson National Accelerator Facility (Jefferson Lab). Thestudy of the neutron structure had been limited in the past because of lack of afree neutron *** the advent of laser-polarized he gas targets,detailedand systematic investigation of the neutron structure in terms of QCD degrees offreedom is *** this talk,I review recent experiments from Jefferson lab onthe structure of the neutron employing a high pressure polarized he target andfuture *** test of QCD in nucleon structure is crucial towards thegoal of understanding more complex,strongly interacting matter at the level ofquarks and gluons.

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A viscoelastic epicardial patch for treating mycardial infarction

A viscoelastic epicardial patch for treating mycardial infar...

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2019中国生理学会学术年会暨张锡钧基金第十五届全国青年优秀生理学学术论文交流会及第十三届全国青年生理学工作者学术会议

作者：孙宁 h.gao L.Yang 复旦大学医学院

前期的研究表明,不同性质的生物材料可以提高心梗后左心室功能,但效果相差较大。如何制备效果更好且风险更小的心外膜补片材料一直是难点之一。本研究中我们开发了一种具备"凝胶点"特性的新型生物材料GPAP,这种材料具有自适应性,保持一...

前期的研究表明,不同性质的生物材料可以提高心梗后左心室功能,但效果相差较大。如何制备效果更好且风险更小的心外膜补片材料一直是难点之一。本研究中我们开发了一种具备"凝胶点"特性的新型生物材料GPAP,这种材料具有自适应性,保持一种半流体半固体的材料特性,能够很好的适应心脏反复的收缩舒张。相比其他报道过的材料,GPAP无毒性与免疫原性,可被CT与MRI追踪,更加安全,且贴敷心外膜对心梗的修复有更好的效果,为未来缺血性心肌病的治疗提供了更好的材料选择。

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A Frequency Determination Method for Digitized NMR Signals

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Communications in Computational Physics 2014年第5期15卷 1343-1351页

作者： h.Yan K.Li R.Khatiwada E.Smith W.M.Snow C.B.Fu P.-h.Chu h.gao W.Zheng Indiana University BloomingtonIndiana 47408USA Center for Exploration of Energy and Matter Indiana UniversityBloomingtonIN 47408USA Department of Physics Shanghai Jiaotong UniversityShanghai200240China Triangle Universities Nuclear Laboratory and Department of Physics Duke UniversityDurhamNorth Carolina 27708USA.

We present a high precision frequency determination method for digitized NMR FID *** method employs high precision numerical integration rather than simple summation as in many other *** no independent knowledge of the other parameters of a NMR FID signal(phaseφ,amplitude A,and transverse relaxation time T_(2))this method can determine the signal frequency f_(0)with a precision of 1/(8π^(2)f_(0)^(2)T_(2)^(2))if the observation time T≫T_(2).The method is especially convenient when the detailed shape of the observed FT NMR spectrum is not well *** T2 is+∞and the signal becomes pure sinusoidal,the precision of the method is 3/(2π^(2)f_(0)^(2)T_(2))which is one order more precise than the±1 count error induced precision of a typical frequency *** of this method shows that the integration reduces the noise by bandwidth narrowing as in a lock-in amplifier,and no extra signal filters are *** a pure sinusoidal signal we find from numerical simulations that the noise-induced error in this method reaches the Cramer-Rao Lower Band(CRLB)on frequency *** the damped sinusoidal case of most interest,the noise-induced error is found to be within a factor of 2 of CRLB when the measurement time T is 2 or 3 times larger than *** discuss possible improvements for the precision of this method.

关键词： NMR FID numerical integration frequency determination noise reduction

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Rationally designing S/Ti3C2Tx as cathode material with an interlayer for highrate and long-cycle lithium-sulfur batteries

Rationally designing S/Ti3C2Tx as cathode material with an i...

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中国化学会第三届中国能源材料化学研讨会

作者： Q.Jin N.Zhang C.C.Zhu h.gao X.T.Zhang School of Physics and Electronic Engineering Harbin Normal University Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education

Lithium-sulfur batteries suffer from poor cycling stability and inferior rate capability,mainly caused by the low conductivity and lithium polysulfides *** tackle these problems,this work demonstrates that Ti

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Self-healing of hybridly polarized Bessel beam in the atomic vapor with polarization dependent absorption

Self-healing of hybridly polarized Bessel beam in the atomic...

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第十八届全国量子光学学术会议

作者：陈云 J.W.Wang X.Yang D.Wei h.gao F.L.Li 西安交通大学 Shaanxi Key Laboratory of Quantum Information and Quantum Optoelectronic Devices Xi'an Jiaotong University

The Bessel beams have attracted extensive research interests in the past decades because of their two remarkable features, non-diffractive propagation and self-healing. On the other hand, as the vector beams with transversely inhomogeneous state of polarization have intensively studied recently, the vector Bessel beams which possess the properties of the Bessel beams and the vector beams were proposed and have been studied on the aspect of self-healing. Previous works mainly investigated the self-healing of the intensities and the spatially inhomogeneous states of polarization of vector Bessel beams after propagation through various thin opaque obstacles. There are limited studies on self-healing of vector Bessel beam in nonlinear medium. In this work, we experimentally measured the self-healing of a hybridly polarized Bessel beam which through a rubidium vapor loaded with external magenetic fields. A hybridly polarized Bessel beam was experimentally generated via a digital version of Durnin’s method. Then, with the effect of external magenetic fields, the rubidium vapor presented polarization dependent absorption. Thus under the different degrees of breaking, the vector Bessel beam show different degrees of self-healing. To make the results more convincing, we simulated the process of self healing in atomic vapor. The numerical simulations agree well with the experimental results. Those studies may have applications in particle trapping and microscopy.

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Effects of Microalgal Carotenoids on Acute Renal Injury Prophylaxis in Male Wistar Rats

Effects of Microalgal Carotenoids on Acute Renal Injury Prop...

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全国第九届海洋生物技术与创新药物学术会议

作者： J.G.Liu J.he Y.Zhang h.gao D.Y.Liu T.Pang Institute of Oceanology Chinese Academy of Sciences

Microalgal bioproducts enriched with astaxanthin andβ-carotene were systematically studied to determine their effects on the acute renal injury prophylaxis in male wistar *** rats were pre-fed with different doses of astaxanthin-riched haematococcus pluvialis powder andβ-carotene extracted from Dunaliella salina via orogastric gavage for 30 ***,acute renal injury was induced by daily intraperitoneal injection of gentamicin(150 mg/kg body weight/day)for 7 *** indexes including serum urea nitrogen(BUN)and ceatinine(CREA),activities of acidic phosphatase(ACP),superoxide dismutase(SOD),protein content,and membrane lipids peroxidized malondialdehyde(MDA)in kidney homogenates were *** samples of renal tissues were microscopically ***,lysosomes,endoplasmic reticula and plasma membrane of the proximal convoluted tubular cells were observed by transmission electron *** results suggested that natural astaxanthin and P-carotene significantly decreased the serum CREA levels in the male rats with acute renal injury,and astaxanthin had greater influence on serum CREA reduction than the same dose ofβ-carotene *** data suggested that astaxanthin increased the ACP activity in lysosomes of the renal ***,those rats with significant increase of ACP activity,also showed a significant decrease in RUN and *** other words,the strongly preventive effects of astaxanthin on acute renal injury in the tested rats are obviously *** andβ-carotene increased SOD activity in the renal tissues of male rats but did not significantly decrease the membrane *** photographs suggested that astaxanthin could prevent the proximal convoluted tubules in the wistar rats from necrosis and prevent glomeruli from atrophia,whereasβ-carotene could not do *** andβ-carotene helped relieve symptoms of the acute renal injury in male rats,such as the rupture of cel

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Monophyletic origin of domestic bactrian camel (Camelus bactrianus) and its evolutionary relationship with the extant wild camel (Camelus bactrianus ferus)

Monophyletic origin of domestic bactrian camel (Camelus bact...

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首届（2012）中国骆驼大会暨中国畜牧业协会骆驼分会成立大会

作者： Jirimutu P.Cui F.Ding J.Geng h.gao h.Zhang J.Yu S.hu h.Meng Key Laboratory of Dairy Biotechnology and Engineering Ministry of Education College of Food Science and EngineeringInner Mongolia Agricultural University CAS Key Laboratory of Genome Sciences and Information Beijing Institute of GenomicsChinese Academy of Sciences Graduate School of the Chinese Academy of Sciences School of Agriculture and Biology Shanghai Jiao Tong University

The evolutionary relationship between the domestic bactrian camel and the extant wild two-humped camel and the factual origin of the domestic bactrian camel remain *** determined the sequence of mitochondrial cytb gene from 21 camel samples,including 18 domestic camels(three Camelus bactrianus xinjiang,three Camelus bactrianus sunite,three Camelus bactrianus alashan,three Camelus bactrianus red,three Camelus bactrianus brown and three Camelus bactrianus normal) and three wild camels(Camelus bactrianus ferus).Our phylogenetic analyses revealed that the extant wild two-humped camel may not share a common ancestor with the domestic bactrian camel and they are not the same subspecies at least in their maternal *** clock analysis based on complete mitochondrial genome sequences indicated that the sub-speciation of the two lineages had begun in the early Pleistocene,about 0.7 million years *** to the archaeological dating of the earliest known two-humped camel domestication(5000-6000 years ago),we could conclude that the extant wild camel is a separate lineage but not the direct progenitor of the domestic bactrian *** phylogenetic analysis suggested that the bactrian camel appeared monophyletic in evolutionary origin and that the domestic bactrian camel could originate from a single wild *** data presented here show how conservation strategies should be implemented to protect the critically endangered wild camel,as it is the last extant form of the wild tribe Camelina.

关键词： bactrian camel domestication mitochondrial genome phylogeny

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Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese Physics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban h.-R.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann h.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.R.Che G.Chelkov C.Chen C.h.Chen Chao Chen G.Chen h.S.Chen M.L.Chen S.J.Chen S.L.Chen S.M.Chen T.Chen X.R.Chen X.T.Chen Y.B.Chen Y.Q.Chen Z.J.Chen Z.Y.Chen S.K.Choi X.Chu G.Cibinetto F.Cossio J.J.Cui h.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.h.Feng Y.T.Feng K.Fischer M.Fritsch C.D.Fu J.L.Fu Y.W.Fu h.gao Y.N.gao Yang gao S.Garbolino I.Garzia P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du Z.h.Duan P.Egorov Y.h.Fan J.Fang JA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.h.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.han T.T.han X.Q.hao F.A.harris K.K.he K.L.he F.h.heinsius C.h.heinz Y.K.heng C.herold T.holtmann P.C.hong G.Y.hou X.T.hou Y.R.hou Z.L.hou B.Y.hu h.M.hu J.F.hu T.hu Y.hu G.S.huang K.X.huang L.Q.huang X.T.huang Y.P.huang T.hussain F.h\"olzken N.h\"usken N.in der Wiesche M.Irshad J.Jackson S.Janchiv J.h.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang h.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.h.Lei h.Leithoff M.Lellmann T.Lenz C.Li C.Li C.h.Li Cheng Li D.M.Li F.Li G.Li h.Li h.B.Li h.J.Li h.N.Li hui Li J.R.Li J.S.Li K.Li L.J.Li L.K.Li Lei Li M.h.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.h.Li X.L.Li X.Y.Li Y Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China Central South University Changsha 410083China China Center of Advanced Science and Technology Beijing 100190China China University of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou Normal University Hangzhou 310036China hebei University Baoding 071002China helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University Kaifeng 475004China henan University of Science and Technology Luoyang 471003China henan University of Technology Zhengzhou 450001China huangshan College Huangshan 245000China hunan Normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis CP-even fraction

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Generation of non-classical photon pairs in atomic ensemble

Generation of non-classical photon pairs in atomic ensemble

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第十八届全国量子光学学术会议

作者：辜滟 C.Y.Wang Y.Yu R.Z.Zhang D.Wei P.Zhang h.gao F.L.Li 西安交大 Shaanxi Key Laboratory of Quantum Information and Quantum Optoelectronic Devices Xi'an Jiaotong University

It is vital to generate entangled photon pairs for the research of quantum information, quantum computation, quantum cryptography and quantum imaging. Compared to photon pairs generated by spontaneous parametric down conversion（SPDC） using nonlinear crystals, spontaneous four-wave mixing（SWMF） based on atomic ensembles can produce photon pairs with narrower linewidth and longer coherence time. In this context, we use continuous-wave operation mode to generate narrowband non-classical photon pairs via SFWM in a hot 87 Rb atomic vapor cell without buffer gas or polarization preserving coatings. We decrease the fluorescence noise in the Stokes path by detuning the pump beam away from the resonant transition and by using optical filter systems. An optical pumping beam is used to suppress the uncorrelated photon noise in the anti-Stokes path. Besides, we study the influence of experimental beam power as well as the temperature on the non-classical property of the photon pairs in this kind of vapor cell. We obtain the photon pairs with a 1/e correlation time of 40 ns and the violation of Cauchy–Schwartz inequality by a factor of 23±3. This provides a convenient and efficient method to generate photon pair sources based on an atomic ensemble.

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