检索结果-南通市图书馆

A Test of Color-Octet Heavy Quarkonium Production Mechanism

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2001年第11期36卷 569-572页

作者： DUAN Chun-gui yan Zhan-Yuan HE zhen-Min CCAST World Laboratory P.O.Box 8730Beijing 100080China CCAST(World Laboratory) P.O.Box 8730Beijing 100080China Physics DepartmentNorth China Electric Power UniversityBaoding 071003China CCAST World LaboratoryP.O.Box 8730Beijing 100080China CCAST(World Laboratory) P.O.Box 8730Beijing 100080China

Using the scale evolution of nuclear parton distributions,the contribution of color-octet heavy quarkonium production mechanism to the P + Fe → J/ψ + γ + X process in calculated and *** our theoretical results with... 详细信息

关键词： nuclear parton distribution,color-octet,nonrelativistic QCD

Microstructure Evolution and Strain-Dependent Constitutive Modeling to Predict the Flow Behavior of 20Cr–24Ni–6Mo Super-Austenitic Stainless Steel During Hot Deformation

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

Acta Metallurgica Sinica(English Letters) 2018年第4期31卷 401-414页

作者： yan-Sen Hao Wan-Chun liu zhen-Yu liu State Key Laboratory of Rolling and Automation Northeastern University

Hot compression tests were carried out with specimens of 20Cr-24Ni-6Mo super-austenitic stainless steel at strain rate from 0.01 to 10 s^-1 in the temperature range from 950 to 1150 ℃,and flow behavior was *** analysis indicated that dynamic recrystallization（DRX）behavior was more sensitive to the temperature than strain rate,and full DRX was obtained when the specimen deformed at 1150℃.When the temperature reduced to 1050 ℃,full DRX was completed at the highest strain rate 10 s-l rather than at the lowest strain rate 0.01 s-1 because the adiabatic heating was pronounced at higher strain *** addition,flow behavior reflected in flow curves was inconsistent with the actual microstructural evolution during hot deformation,especially at higher strain rates and lower ***,flow curves were revised in consideration of the effects of adiabatic heating and friction during hot *** results showed that adiabatic heating became greater with the increase of strain level,strain rate and the decrease of temperature,while the frictional effect cannot be neglected at high strain ***,based on the revised flow curves,strain-dependent constitutive modeling was developed and verified by comparing the predicted data with the experimental data and the modified *** result suggested that the developed constitutive modeling can more adequately predict the flow behavior reflected by corrected flow curves than that reflected by experimental flow curves,even though some difference existed at 950℃ and 0.01 s^-*** main reason was that plenty of precipitates generated at this deformation condition and affected the DRX behavior and deformation behavior,eventually resulted in dramatic increase of deformation resistance.

关键词： Super-austenitic stainless steel Hot compression Adiabatic heating Constitutive modeling Microstructure evolution

Electric transport mechanism and magnetoresistance of La_(0.80)Sr_(0.15)Ag_(0.05)MnO_3/x(CuO)

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2015年第5期34卷 329-333页

作者： Peng liu gui-Ying Wang Qiang Mao Ning liu zhen-Sheng Peng Anhui Key Laboratory of Spintronic and Nano-metric Materials School of Mechanics of Electronic Engineering Suzhou University School of Electrical Engineering Anhui Engineering University

The samples of La0.80Sr0.15Ag0.05MnO3/x（CuO）（x = 0, 0.05, 0.10, 0.15, 0.20） were prepared by the solid-state reaction method, and the structure of the sampies was detected by X-ray diffraction （XRD）, scanning electron microscope （SEM） equipped with energy dispersive spectroscopy （EDS）, electric transport mechanism, and magnetoresistance enhancement, and the temperature stability of magnetoresistance of the samples was studied through resistivity-temperature （ρ-T） curves, ρ-T fitted curves, and magnetoresistance-temperature （MR-T） curves. The results indicate that ρ-T data can be fitted by the formula ρ = ρ0 ＋ AT^2 very well, and the electric transport mechanism of all the samples in metal-like area is the scattering of single magneton upon spin electron; the magnetoresistance of composite samples is far larger than that of the original material, and the MR peak value of the sample with x = 0.20 is nearly 4 times as large as that of the sample with x = 0; composite samples have comparatively good temperature stability of magnetoresistance in the temperature range of 200-260 K, and the magnetoresistance of the sample with x = 0.15 almost does not change with temperature and keeps at （5.03 ± 0.20） % in the temperature range of 210-260 K.

关键词： Temperature stability of magnetoresistance Magnetoresistance enhancement Electric transport mechanism Two-phase composite

Polymorphic Transition of Pre-oriented Polybutene-1 under Tensile Deformation:In Situ FTIR Study

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2020年第8期38卷 888-897,I0008页

作者： zhen Zhang Xin Chen Chuang Zhang Chun-Tai liu zhen Wang yan-Ping liu National Engineering Research Center for Advanced Polymer Processing Technology Key Laboratory of Materials Processing and Mold(Zhengzhou University)Ministry of EducationZhengzhou UniversityZhengzhou 450002China National Center for International Research of Micro-nano Molding Technology&Key Laboratory for Micro Molding Technology of Henan Province Zhengzhou UniversityZhengzhou 450002China

Deformation-induced phase transition of FormⅡto FormⅠin polybutene-1(PB-1)has been investigated by time-resolved Fourier transform infrared(FTIR)spectroscopy over a wide temperature range from 25℃to 105℃.The initial film sample containing orientated lamellae is prepared by pre-stretching of PB-1 melt followed by *** is to realize a homogeneity of subsequent deformation at the mesoscale of lamellar stacks by avoiding large-scale *** deformation induced phase transition is recognized to occur with two stages:first,FormⅡundergoes the lamellar fragmentation,slipping or local melting after yielding to activate its transition to FormⅠ,which may be realized by releasing the restrictions on chains translational movements in crystalline phase;second,the phase transition proceeds with a continuous dissipation of external work and determines the tensile mechanical response of *** quantify the relationship between crystalline transition of FormⅡto FormⅠand external tensile field,a simple kinetic equation is well established based on FTIR *** equation can describe not only the dependence of crystal transitional degree on applied specific work,but also the retardation effect of elevating temperature on phase transition.

关键词： Polybutene-1 Tensile deformation FTIR Crystalline transition External work

Studies on blood enrichment and anti-tumor effects of combined Danggui Buxue Decoction,Fe and rhEPO based on colon cancer-related anemia model and gut microbiota modulation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Natural Medicines 2021年第6期19卷 422-431页

作者： SHI Xu-Qin ZHU zhen-Hua YUE Shi-Jun TANG Yu-Ping CHEN yan-yan PU Zong-jin TAO Hui-Juan ZHOU gui-Sheng DUAN jin-Ao Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization and Jiangsu Key Laboratory for High Technology Research of TCM Formulaeand National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative MedicineNanjing University of Chinese MedicineNanjing 210023China School of Artificial Intelligence and Information Technology Nanjing University of Chinese MedicineNanjing 210023China Institute of Mental Health Suzhou Psychiatric HospitalSoochow University Affiliated Guangji HospitalSuzhou 215100China Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility and State Key Laboratory of Research&Development of Characteristic Qin Medicine Resources(Cultivation)and Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs Researchand Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources IndustrializationShaanxi University of Chinese MedicineXi’an 712046China

Colon cancer-related anemia(CCRA)is mainly caused by systemic inflammation,intestinal bleeding,iron deficiency and chemotherapy-induced myelosuppression in colon ***,the best therapeutic schedule and related mechanism on CCRA were still *** on blood enrichment and anti-tumor effects of combined Danggui Buxue Decoction(DBD),Fe and rhEPO based on CCRA and gut microbiota modulation were conducted in this ***,CCRA model was successfully induced by subcutaneous inoculation of CT-26 and ***,rhEPO+DBD high dosage+Fe(EDF)and rhEPO+DBD high dosage(ED)groups had the best blood enrichment ***,EDF group also showed antitumor *** sequencing results of gut microbiota showed that compared to P group,the relative abundances of Lachnospiraceae and opportunistic pathogen(Odoribacter)in ED and EDF groups were ***,EDF also decreased the relative abundances of cancer-related bacteria(Helicobacter,Lactococcus,Alloprevotella)and imbalance-inducing bacteria(Escherichia-Shigella and Parabacteroides)and increased the relative abundances of butyrate-producing bacteria(Ruminococcaceae_UCG-014),however,ED showed the opposite effects to EDF,this might be the reason of the smaller tumor volume in EDF *** findings proposed the best treatment combination of DBD,rhEPO and Fe in CCRA and provided theoretical basis and literature reference for CCRA-induced intestinal flora disorder and the regulatory mechanism of EDF.

关键词： Danggui Buxue Decoction Cancer-related anemia Gut microbiota modulation Fe rhEPO

Einstein Probe discovery of EP240408a: A peculiar X-ray transient with an intermediate timescale

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 222-240页

作者： Wenda Zhang Weimin Yuan Zhixing Ling Yong Chen Nanda Rea Arne Rau Zhiming Cai Huaqing Cheng Francesco Coti Zelati Lixin Dai jingwei Hu Shumei Jia Chichuan jin Dongyue Li Paul O’Brien Rongfeng Shen Xinwen Shu Shengli Sun Xiaojin Sun Xiaofeng Wang Lei yang Bing Zhang Chen Zhang Shuang-Nan Zhang Yonghe Zhang Jie An David Buckley Alexis Coleiro Bertrand Cordier Liming Dou Rob Eyles-Ferris Zhou Fan Hua Feng Shaoyu Fu Johan P.U.Fynbo Lluis Galbany Saurabh W.Jha Shuaiqing Jiang Albert Kong Erik Kuulkers Weihua Lei Wenxiong Li Bifang liu Mingjun liu Xing liu Yuan liu Zhu liu Chandreyee Maitra Alessio Marino Itumeleng Monageng Kirpal Nandra Jeremy Sanders Roberto Soria Lian Tao Junfeng Wang Song Wang Tinggui Wang Zhongxiang Wang Qingwen Wu Xuefeng Wu Dong Xu yanjun Xu Suijian Xue Yongquan Xue Zijian Zhang Zipei Zhu Hu Zou Congying Bao Fansheng Chen Houlei Chen Tianxiang Chen Wei Chen Yehai Chen Yifan Chen Chenzhou Cui Weiwei Cui yanfeng Dai Dongwei Fan Ju Guan Dawei Han Dongjie Hou Haibo Hu Maohai Huang Jia Huo zhenqing Jia Bowen Jiang Ge jin Chengkui Li Junfei Li Longhui Li Maoshun Li Wei Li zhengda Li Tianying Lian Congzhan liu Heyang liu Huaqiu liu Fangjun Lu Laidan Luo Jia Ma Xuan Mao Haiwu Pan Xin Pan Liming Song Hui Sun Yunyin Tan Qingjun Tang Yihan Tao Hao Wang Juan Wang Lei Wang Wenxin Wang Yilong Wang Yusa Wang Qinyu Wu Haitao Xu jingjing Xu Xinpeng Xu Yunfei Xu Zhao Xu Changbin Xue Yulong Xue Ailiang yan Haonan yang Xiongtao yang yanji yang Juan Zhang Mo Zhang Wenjie Zhang zhen Zhang zhen Zhang Ziliang Zhang Donghua Zhao Haisheng Zhao Xiaofan Zhao Zijian Zhao Hongyan Zhou Yilin Zhou Yuxuan Zhu zhencai Zhu National Astronomical Observatories Chinese Academy of Sciences School of Astronomy and Space Sciences University of Chinese Academy of Sciences Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Institute of Space Sciences (ICE) CSIC Institut d’Estudis Espacials de Catalunya (IEEC) Max Planck Institute for Extraterrestrial Physics Innovation Academy for Microsatellites Chinese Academy of Sciences Department of Physics University of Hong Kong School of Physics and Astronomy University of Leicester School of Physics and Astronomy Sun Yat-sen University Department of Physics Anhui Normal University Shanghai Institute of Technical Physics Chinese Academy of Sciences Physics Department Tsinghua University Nevada Center for Astrophysics University of Nevada Las Vegas Department of Physics and Astronomy University of Nevada Las Vegas South African Astronomical Observatory Department of Astronomy University of Cape Town Department of Physics University of the Free State Université Paris Cité CNRS Astroparticule et Cosmologie Université Paris Cité CEA Paris-Saclay IRFU/DAp-AIM Department of Astronomy Guangzhou University Cosmic Dawn Center (DAWN) Niels Bohr Institute University of Copenhagen Department of Physics and Astronomy Rutgers the State University of New Jersey Institute for Cosmic Ray Research The University of Tokyo ESA/ESTEC Department of Astronomy School of Physics Huazhong University of Science and Technology INAF-Osservatorio Astrofisico di Torino Sydney Institute for Astronomy School of Physics The University of Sydney Department of Astronomy Xiamen University Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University Department of Astronomy University of Science and Technology School of Astronomy and Space Sciences University of Science and Technology of China Institute of Deep Space Sciences Deep Space Exploration Laboratory Department of Astronomy School of Physics and Astronomy Yunnan University Shanghai Astronomical Observatory Chi

We report the discovery of a peculiar X-ray transient,EP240408a,by Einstein Probe （EP） and follow-up studies made with EP,Swift,NICER,GROND,ATCA and other ground-based multiwavelength *** new transient was first detected with Wide-field X-ray Telescope （WXT） on board EP on April 8th,2024,manifested in an intense yet brief X-ray flare lasting for *** flare reached a peak flux of 3.9×10-9erg cm-2s-1in 0.5-4 ke V,～300 times brighter than the underlying X-ray emission detected throughout the *** and more precise follow-up observations by EP/FXT,Swift and NICER confirmed the finding of this new *** X-ray spectrum is non-thermal in 0.5-10 ke V,with a power-law photon index varying *** X-ray light curve shows a plateau lasting for ～4 d,followed by a steep decay till becoming undetectable ～10 d after the initial *** on its temporal property and constraints from previous EP observations,an unusual timescale in the range of 7-23 d is found for EP240408a,which is intermediate between the commonly found fast and long-term *** counterparts have been found in optical and near-infrared,with the earliest observation at 17 h after the initial X-ray detection,suggestive of intrinsically weak emission in these *** demonstrate that the remarkable properties of EP240408a are inconsistent with any of the transient types known so far,by comparison with,in particular,jetted tidal disruption events,gamma-ray bursts,X-ray binaries and fast blue optical *** nature of EP240408a thus remains an *** suggest that EP240408a may represent a new type of transients with intermediate timescales of the order of～10 *** detection and follow-ups of more of such objects are essential for revealing their origin.

关键词： X-ray transients ${\bm~{Einstein~~Probe}}$

Uncertainty evaluation and correlation analysis of single-particle energies in phenomenological nuclear mean field:an investigation into propagating uncertainties for independent model parameters

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2021年第2期32卷 45-57页

作者： zhen-zhen Zhang Hua-Lei Wang Hai-yan Meng Min-Liang liu School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

Based on the Monte Carlo approach and conventional error analysis theory,taking the heaviest doubly magic nucleus 208Pb as an example,we first evaluate the propagated uncertainties of universal potential parameters for three typical types of single-particle energy in the phenomenological Woods–Saxon mean *** the Woods–Saxon modeling with uncorrelated model parameters,we found that the standard deviations of singleparticle energy obtained through the Monte Carlo simulation and the error propagation rules are in good *** seems that the energy uncertainty of the single-particle levels regularly evoluate with certain quantum numbers to a large extent for the given parameter ***,the correlation properties of the single-particle levels within the domain of input parameter uncertainties are statistically analyzed,for example,with the aid of Pearson’s correlation *** was found that a positive,negative,or unrelated relationship may appear between two selected single-particle levels,which will be extremely helpful for evaluating the theoretical uncertainty related to the single-particle levels(e.g.,K isomer)in nuclear structural calculations.

关键词： Uncertainty propagation Correlation effect Woods-Saxon potential

Progress and expectation of stem cell therapy for diabetic wound healing

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2023年第3期11卷 506-513页

作者： zhen-Han Xu Meng-Hui Ma yan-Qing Li Li-Lin Li gui-Hua liu Reproductive Medicine Center The Sixth Affiliated HospitalSun Yat-Sen UniversityGuangzhou 510610Guangdong ProvinceChina

Impaired wound healing presents great health risks to ***,the current clinical successfully found out meaningful method to repair wound tissue,and stem cell therapy could be an effective method for diabetic wound healing with its ability to accelerate wound closure and avoid *** minireview aims at introducing stem cell therapy for facilitating tissue repair in diabetic wounds,discussing the possible therapeutic mechanism and clinical application status and problems.

关键词： Stem cell Diabetic wound Wound healing Immunoregulation

PERTURBATION THEORY FOR NONLINEAR KLEIN-GORDON EQUATION

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

Applied Mathematics and Mechanics(English Edition) 2002年第8期23卷 987-992页

作者： liu Tian-gui(刘天贵) yan Jia-ren(颜家壬) Department of Physics Hunan Normal University Changsha 410081 P R China Department of Physics Hunan Normal University Changsha 410081 P R China

The effects of perturbations on a nonlinear Klein-Gordon the soliton to the first-order approximation are obtained, namely, the soliton parameters changing slowly with time, and the concrete expression of the first-or... 详细信息

关键词： soliton perturbation soliton parameter nonlinear Klein-Gordon soliton