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Symmetry energy at subsaturation densities and the neutron skin thickness of ^(208)Pb

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Science China(Physics,Mechanics & Astronomy) 2015年第6期58卷 81-85页

作者： FAN XiaoHua dong jianmin ZUO Wei Institute of Modern Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

The mass-dependent symmetry energy coefficients asym（A） has been extracted by analysing the heavy nuclear mass differences reducing the uncertainties as far as possible in our previous work. Taking advantage of the obtained symmetry energy coefficient asym（A） and the density profiles obtained by switching off the Coulomb interaction in ^208Pb, we calculated the slope parameter L0.11 of the symmetry energy at the density of 0.11 fm^-3. The calculated L0.11 ranges from 40.5 MeV to 60.3 MeV. The slope parameter L0.11 of the symmetry energy at the density of 0.11 fm^-3 is also calculated directly with Skyrme interactions for nuclear matter and is found to have a fine linear relation with the neutron skin thickness of ^208spb, which is the difference of the neutron and proton rms radii of the nucleus. With the linear relation the neutron skin thickness ARnp of ^208spb is predicted to be 0.15-0.21 fm.

关键词： nuclear matter symmetry energy neutron skin

Stellar structure of magnetars

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Science China(Physics,Mechanics & Astronomy) 2016年第4期59卷 66-70页

作者： jianmin dong Wei Zuo JianZhong Gu XinLe Shang Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China State Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China China Institute of Atomic Energy Beijing 102413 China

Magnetars are strong magnetized neutron stars which could emit quiescent X-ray, repeating burst of soft gamma ray, and even the giant flares. We investigate the effects of magnetic fields on the structure of isolated magnetars. The stellar structure together with the magnetic field configuration can be obtained at the same time within a self-consistent procedure. The magnetar mass and radius are found to be weakly enhanced by the strong magnetic fields. Unlike other previous investigations, the magnetic field is unable to violate the mass limit of the neutron stars.

关键词： neutron stars magnetic and electric fields equations of state of neutron-star matter

Theoretical study on spherical proton emission

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Science China(Physics,Mechanics & Astronomy) 2009年第10期52卷 1536-1541页

作者： ZHANG HongFei WANG YongJia dong jianmin LI JunQing School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Kavli institute for Theoretical Physics China Chinese Academy of SciencesBeijing 100190China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

The proton radioactivity half-lives of spherical proton emitters are investigated within a generalized liquid drop model(GLDM),including the proximity effects between nuclei in a neck and the mass and charge *** penetrability is calculated in the WKB approximation and the assault frequency is estimated by the quantum mechanism method considering the structure of the parent *** spectroscopic factor is taken into account in half-life calculation,which is obtained by employing the relativistic mean field(RMF) *** half-lives within the GLDM are compared with the experimental data and other theoretical *** results show that the GLDM works quite well for spherical proton emitters when the assault frequency is estimated by the quantum mechanical method and the spectroscopic factor is considered.

关键词： proton emission half-lives spectroscopic factors generalize liquid drop model

Analysis of Electronic Structures for SmCo5 Compound

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Journal of Rare Earths 2004年第z1期22卷 103-106页

作者： Zhang Changwen Li Hua Guo Yongquan Li Wei dong jianmin School of physics and Microelectronics Shandong University Jinan 250100 China School of physics and Microelectronics Shandong University Jinan 250100 China Institute of Functional Materials Central Iron &Steel Research Institute Beijing 100081 China Institute of Functional Materials Central Iron &Steel Research Institute Beijing 100081 China School of physics and Microelectronics Shandong University Jinan 250100 China

The spin-polarized MS-Xα method is employed to study the electronic structure and the magnetic property of the SmCo5 *** to the calculated results, the magnetic moment per Sm is 1.29μB in the SmCo5 compound, which agrees with that of *** analyzed result reveals that some negative exchange couplings occurring at six energy levels induce the distinct decrease of Curie temperature and the magnetic moment per *** valence electron numbers of 2.48, which are derived from the orbital hybridization from s, p, d and f functions between Sm and Co atoms, are transferred to Sm(5d0) ***, the exchange interactions between 3d ～ 5d electrons lead to the magnetic coupling between Sm and Co, which results in the long-range ferromagnetic-order inside the SmCo5 compound.

关键词： electronic structure atomic magnetic moment exchange coupling Curie temperature

The electronic structures,magnetism and metastable states of DNA

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Chinese Science Bulletin 2006年第14期51卷 1666-1672页

作者： WANG Yongjuan LI Hua dong jianmin ZHANG Cha'ngwen PAN Fengchun School of Physics and Microelectronics Shandong University Jinan250100 China

The electronic density of states, spin- splittings and atomic magnetic moments of the six- member ring N2C4 cluster with folding configuration in DNA bases have been studied by spin-polarized MS-Xα method. The results showed that there are at least four metastable states near the ground state level ?7.01635×103 eV. Those metastable states found in the calculation are at the levels ?7.01626× 103, ?7.01616×103, ?7.01606×103 and ?7.01597×103 eV, respectively. The electronic structures of those states were found to differ from each other. Therefore, they have different characteristics. The cluster exhib-its metal properties and has a weak antiferromag-netism in the ground state, while it shows ferrimag-netism and half-metal properties in the first metasta-ble state. The distribution of the electronic density of states of the six-member ring N2C4 cluster is very similar to that of some diluted magnetic semicon-ductors near the Fermi surface.

关键词： DNA 电子结构自旋极化磁性半金属亚稳态

BOD5荧光测定法与标准方法在地表水监测中的对比性研究

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分析测试技术与仪器 2024年第2期30卷 110-117页

作者：张卫宏武宇芳曹轶男于哲董建民中节能天融科技有限公司北京100089 山西省忻州师范学院山西忻州034000 辽宁省安全科学研究院辽宁沈阳110004

BOD5检测是一种基于微生物的污染负荷评估,有文献证明微生物代谢物类色氨酸的荧光强度与BOD5测量之间存在相关性.对长江流域常州段地表水水样的荧光强度与BOD5值之间的关系进行了探究,并通过考察浊度、pH、离子干扰和区域差异来评估荧... 详细信息

BOD5检测是一种基于微生物的污染负荷评估,有文献证明微生物代谢物类色氨酸的荧光强度与BOD5测量之间存在相关性.对长江流域常州段地表水水样的荧光强度与BOD5值之间的关系进行了探究,并通过考察浊度、pH、离子干扰和区域差异来评估荧光法应用于水质BOD5污染评价中的潜力.研究发现,地表水的pH和离子干扰对荧光法检测BOD5并不构成明显影响.区域差异对比结果t最大值为1.227,不构成显著性差异.荧光法水样检测结果与标准方法相比,相关性系数r为0.9099,具有明显相关性.结果表明,荧光法应用于地表水BOD5检测影响因素少、检测速度快、自动化程度高、结果稳定可靠,可以作为BOD5检测的替代方法,成为表征水中可生物降解污染物污染程度的主要手段.

关键词：五日生化需氧量类色氨酸荧光法快速检测

γδT cells:Major advances in basic and clinical research in tumor immunotherapy

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Chinese Medical Journal 2024年第1期137卷 21-33页

作者： Yueqi Zhao Peng dong Wei He jianmin Zhang Hui Chen Department of Immunology CAMS Key Laboratory for T Cell and ImmunotherapyState Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical Sciences and School of Basic MedicinePeking Union Medical CollegeBeijing 100005China Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy ChangzhouJiangsu 213000China Haihe Laboratory of Cell Ecosystem Chinese Academy of Medical Sciences and Peking Union Medical CollegeTianjin 300020China

γδT cells are a kind of innate immune T *** have not attracted sufficient attention because they account for only a small proportion of all immune cells,and many basic factors related to these cells remain ***,in recent years,with the rapid development of tumor immunotherapy,γδT cells have attracted increasing attention because of their ability to exert cytotoxic effects on most tumor cells without major histocompatibility complex(MHC)*** increasing number of basic studies have focused on the development,antigen recognition,activation,and antitumor immune response ofγδT ***,γδT cell-based immunotherapeutic strategies are being developed,and the number of clinical trials investigating such strategies is *** review mainly summarizes the progress of basic research and the clinical application ofγδT cells in tumor immunotherapy to provide a theoretical basis for further the development ofγδT cell-based strategies in the future.

关键词： Gamma-delta T-cells T cell receptor CD1a Tumor immunotherapy Receptors,chimeric antigen Vδ1 cells αβT cells

A live birth resulting from a fourth cesarean scar pregnancy after combined hysteroscopic and laparoscopic uterine repair: A case report and literature review

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Laparoscopic, Endoscopic and Robotic Surgery 2024年第3期7卷 136-139页

作者： Jie Yang jianmin Chen dong Huang Assisted Reproduction Unit Department of Obstetrics and GynecologySir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China Zhejiang Key Laboratory of Precise Protection and Promotion of Fertility Hangzhou 310016China Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology Hangzhou 310016China

Cesarean scar pregnancy(CSP)is a rare form of ectopic pregnancy that is defined as a pregnancy sac located within the scar of a previous cesarean *** cesarean scar pregnancy(RCSP)is even more uncommon,1 with Hasegawa et al reporting the first RCSP in 2005.2 RCSP is a high-risk pregnancy condition with potential complications that include heavy bleeding,uterine rupture,and maternal *** exact incidence rates for CSP and RCSP are unknown,although the incidence of CSP is 1/2656–1/1800 of the total number of cesarean sections,and the incidence of RCSP can reach 6.9%–34.3%.3,4,5 With the promulgation of the second and third child policies in China,an increasing number of patients now manifest fertility needs after cesarean *** improvements in examination methods and awareness of CSP,we also suspect that the rates of CSP and RCSP may be even ***,there is no standard treatment for *** herein report a case in which the patient was treated by combined hysteroscopic and laparoscopic uterine repair without scar resection during the third RCSP,and the fourth RCSP occurred 6 months later;the patient then selected expectant *** outcome was a successful cesarean section delivery of a live baby at 34 weeks of gestation,and the uterus was successfully *** pathology was examined after delivery and revealed that the chorionic villi penetrated deeply into the myometrium.

关键词： pregnancy cesarean repair

Exploiting viral vectors to deliver genome editing reagents in plants

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aBIOTECH 2024年第2期5卷 247-261页

作者： Yilin Shen Tao Ye Zihan Li Torotwa Herman Kimutai Hao Song Xiaoou dong jianmin Wan State Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization Jiangsu Collaborative Innovation Centre for Modern Crop ProductionJiangsu Engineering Research Center for Plant Genome EditingNanjing Agricultural UniversityNanjing 210095China Zhongshan Biological Breeding Laboratory Nanjing 210014China Hainan Seed Industry Laboratory Sanya 572025China State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Genome editing holds great promise for the molecular breeding of plants,yet its application is hindered by the shortage of simple and effective means of delivering genome editing reagents into *** plant transformation-based methods for delivery of genome editing reagents into plants often involve prolonged tissue culture,a labor-intensive and technically challenging process for many elite crop *** this review,we describe various virus-based methods that have been employed to deliver genome editing reagents,including components of the CRISPR/Cas machinery and donor DNA for precision editing in *** update the progress in these methods with recent successful examples of genome editing achieved through virus-based delivery in different plant species,highlight the advantages and limitations of these delivery approaches,and discuss the remaining challenges.

关键词： Plant genome engineering Genome editing CRISPR/Cas Virus-based delivery