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Isovector giant dipole resonances in proton-rich Ar and Ca isotopes

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Chinese Physics C 2021年第4期45卷 292-300页

作者： Ling Liu Shuai Liu Shi-Sheng Zhang Li-gang cao College of Physics Science and Technology Shenyang Normal UniversityShenyang 110034China School of Physics Beihang UniversityBejjing 100191China School of Mathematics and Physics North China Electric Power UniversityBeijig 102206China Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China

The isovector giant dipole resonances(IVGDR)in proton-rich Ar and Ca isotopes have been systematic-ally investigated using the resonant continuum Hartree-F ock+BCS(HF+BCS)and quasiparticle random phase ap-proximation(QRPA)*** Skyrme SLy5 and density-dependent contact pairing interactions are employed in the *** addition to the giant dipole resonances at energy around 18 MeV,pygmy dipole resonances(PDR)are found to be located in the energy region below 12 *** calculated energy-weighted moments of PDR in nuclei close to the proton drip-line exhaust about 4%of the TRK sum *** strengths decrease with in-creasing mass number in each isotopic *** transition densities of the PDR states show that motions of pro-tons and neutrons are in phase in the interiors of nuclei,while the protons give the main contribution at the *** analyzing the QRPA amplitudes of proton and neutron 2-quasiparticle configurations for a given low-lying state,we find that only a few proton configurations give significant *** contribute about 95%to the total QRPA amplitudes,which indicates that the collectivity of PDR states is not strong in proton-rich nuclei in the present study.

关键词： pygmy dipole resonances proton-rich nuclei Skyrme energy density functional

Resilience-incorporated seismic risk assessment of precast concrete frames with“dry”connections

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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 403-425页

作者： Wu Chenhao Tang Yuchuan cao Xuyang Wu gang Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education Nanjing 211102China Department of Civil and Environmental Engineering University of CaliforniaLos AngelesCA 90095USA School of Civil Engineering Southeast UniversityNanjing 211102China College of Civil and Transportation Engineering Hohai UniversityNanjing 210024China

A resilience-incorporated risk assessment framework is proposed and demonstrated in this study to manifest the advantageous seismic resilience of precast concrete frame(PCF)structures with“dry”connections in terms of their low damage and rapid *** framework integrates various uncertainties in the seismic hazard,fragility,capacity,demand,loss functions,and post-earthquake *** this study,the PCF structures are distinguished from ordinary reinforced concrete frame(RCF)structures by characterizing multiple limit states for the PCF based on its unique damage ***,probabilistic story-wise pushover analyses are performed to yield story-wise capacities for the predefined limit *** the seismic resilience analysis,a step-wise recovery model is proposed to idealize the functionality recovery process,with separate considerations of the repair and non-repair *** recovery model leverages the economic loss and downtime to delineate the stochastic post-earthquake recovery curves for the resilience loss *** such,contingencies in the probabilistic post-earthquake repairs are incorporated and the empirical judgments on the recovery parameters are largely *** proposed framework is demonstrated through a comparative study between two“dry”connected PCFs and one RCF designed as alternative structural systems for a prototype *** results from the risk quantification indicate that the PCFs show reduced loss hazards and lower expected losses relative to the ***,the PCF equipped with energy dissipation devices at the“dry”connections largely reduces the expected economic loss,downtime,and resilience loss by 29%,56%,and 60%,respectively,compared to the RCF.

关键词： precast concrete frame non-emulative precast system seismic resilience seismic risk functional recovery

基于两阶段启发式算法的省电力物资周转库选址-路径优化研究

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物流工程与管理 2024年第3期46卷 4-7页

作者：张正利杜国政李涛曹刚国网山东省电力公司物资公司山东济南250001

省电力物资周转库是仓储网络架构的关键节点,文中研究带库存容量限制的周转库选址与考虑时间窗和装载量约束的车辆配送路径优化的组合决策问题,构建以配送总成本最小为目标的选址-路径问题模型,设计两阶段启发式算法进行求解。第一阶段... 详细信息

省电力物资周转库是仓储网络架构的关键节点,文中研究带库存容量限制的周转库选址与考虑时间窗和装载量约束的车辆配送路径优化的组合决策问题,构建以配送总成本最小为目标的选址-路径问题模型,设计两阶段启发式算法进行求解。第一阶段设计聚类-重心-搜索算法,求解带库存容量限制的省周转库选址问题;第二阶段采用自适应大邻域搜索算法,解决考虑时间窗和装载量约束车辆配送路径优化问题。基于S省2022年历史物流数据和已有仓储资源规模,采用两阶段启发式算法确定省电力物资周转库选址和配送路径。结果表明该算法能够有效降低仓储网络的总配送成本。

关键词：电力物资选址-路径问题 K-means聚类重心法自适应大邻域搜索算法

Semiconductor quantum computation

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National Science Review 2019年第1期6卷 32-54页

作者： Xin Zhang Hai-Ou Li gang cao Ming Xiao Guang-Can Guo Guo-Ping Guo Key Laboratory of Quantum Information CAS University of Science and Technology of China Synergetic Innovation Center of Quantum Information & Quantum Physics University of Science and Technology of China

Semiconductors, a significant type of material in the information era, are becoming more and more powerful in the field of quantum information. In recent decades, semiconductor quantum computation was investigated thoroughly across the world and developed with a dramatically fast speed. The research varied from initialization, control and readout of qubits, to the architecture of fault-tolerant quantum ***, we first introduce the basic ideas for quantum computing, and then discuss the developments of single-and two-qubit gate control in semiconductors. Up to now, the qubit initialization, control and readout can be realized with relatively high fidelity and a programmable two-qubit quantum processor has even been demonstrated. However, to further improve the qubit quality and scale it up, there are still some challenges to resolve such as the improvement of the readout method, material development and scalable designs. We discuss these issues and introduce the forefronts of progress. Finally, considering the positive trend of the research on semiconductor quantum devices and recent theoretical work on the applications of quantum computation, we anticipate that semiconductor quantum computation may develop fast and will have a huge impact on our lives in the near future.

关键词： semiconductor quantum dot qubit quantum computation spin manipulation

Effect of Al on Expansion Behavior of Mg–Al Alloys During Solidification

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Acta Metallurgica Sinica(English Letters) 2019年第5期32卷 559-565页

作者： Yi Meng Jian Sun Lei-gang cao Yue Yang Hai-Tao Zhang Jian-Zhong Cui School of Mechanical and Materials Engineering North China University of Technology Key Laboratory of Electromagnetic Processing of Materials Ministry of Education Northeastern University

The cooling curves and the change of contraction/expansion during solidification and cooling were tested by using a selfmade device which could achieve the one-dimensional contraction instead of three-dimensional contraction of the ***, the effects of Al content(0, 1.1, 3, 5, 10, 12.9, 15, 17, 19, 22, 24 and 30 wt%) on the thermal contraction/expansion of the binary Mg-Al as-cast alloys during solidification were obtained. The results showed that expanding instead of contraction was present in Mg-Al alloys with the addition of 0-30 wt% Al during solidification. The values of expansion significantly increased at first and then decreased with the increase in Al content. And the maximum expansion ratio of 0.44%(maximum expansion value: 0.841 mm) was present in the Mg-15 wt% Al alloy. Contraction instead of expansion occurred once the temperature drops to the temperature corresponding to the expansion value in total, indicating the occurrence of a continuous expansion during the solidification process in mushy zone for the Mg alloys with Al addition of 5-30 wt%. The expansion value in total consisted of two parts: the expansions occurring in the liquid-phase zone and mushy zone. The expansion in liquid zone was present in every Mg-Al alloy, and it contributed to the most proportion of the total expansion value when the Al content in Mg-Al alloy was lower than 10 wt% or higher than 22 wt%. However, the total expansion value was mainly determined by the solidification behavior in mushy zone when the Al content was among 10-22 wt% in Mg-Al alloys.

关键词： Solidification Mg alloys Al content Expansion

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中麻黄二氯甲烷萃取部位化学成分研究

药学学报 2024年第9期59卷 2574-2580页

作者：范锡玲曹彦刚郑晓珂王振中肖伟冯卫生河南中医药大学河南郑州450046 河南省中药开发工程技术研究中心河南郑州450046 呼吸疾病中医药防治省部共建协同创新中心河南郑州450046 中药制药过程控制与智能制造技术全国重点实验室江苏连云港222001

采用各种柱色谱分离技术对中麻黄二氯甲烷萃取部位化学成分进行分离纯化得到10个化合物,并通过波谱学方法(MS和NMR)对其进行结构鉴定,分别为1-allyl-3,4-dimethoxy-benzene-5-O-β-D-glucopyranoside(1)、lyoniresinol(2)、开环异落叶... 详细信息

采用各种柱色谱分离技术对中麻黄二氯甲烷萃取部位化学成分进行分离纯化得到10个化合物,并通过波谱学方法(MS和NMR)对其进行结构鉴定,分别为1-allyl-3,4-dimethoxy-benzene-5-O-β-D-glucopyranoside(1)、lyoniresinol(2)、开环异落叶松脂素(3)4,3',4'-trihydroxy-3-methoxylignan-9,9'-diyldiacetate(4)dehydroconiferyl alcohol(5)、isocubebin(6)、balanophonin B(7)、sesquipinsapol B(8)、crataegifin A(9)以及1-(2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-7-methoxy-2,3-dihydrobenzofuran-5-yl)ethan-1-one(10),其中化合物1为新化合物,化合物2~10为木脂素类化合物,且均为首次从该植物中分离得到,化合物3、4、8具有潜在的抗哮喘活性。

关键词：中麻黄化学成分 β-氨基己糖苷酶释放率

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Managing Procurement and Production Outsourcing under Dynamic Prices

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Acta Mathematicae Applicatae Sinica 2013年第1期29卷 135-142页

作者： Xiao-gang cao Chao YANG Hui WEN Huo-song XIA Ji-zi LI School of Management Huazhong University of Science and Technology School of Management Wuhan Textile University School of Science Hubei University of Technology

This paper proposes a procurement and production outsourcing model subject to a dynamic prices environment. Using the optimal control theory we obtain the necessary conditions of the optimal procurement and production policy. From the study of optimal control conditions, we derive qualitative properties of the optimal procurement and production decisions for a few exemplifying cases. Through these results we are able to provide some managerial implications for managers to make real decisions.

关键词： production planning dynamic prices optimal control production outsourcing

Synthesis and Characterization of Manganese-copper Spinel Ferrite Powders

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Chemical Research in Chinese Universities 2012年第4期28卷 590-593页

作者： cao Jun-gang LI Jian-jun DUAN Hai-feng LIN Ying-jie College of Chemistry Jilin UniversityChangchun 130012P.R.China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080P.RChina

Magnetic Mn1-xCuxFe2O4（x=0.2,0.5,0.8 and 1.0） nanoparticles were synthesized by single citrate precursor *** samples were characterized by powder X-ray diffraction,vibrating sample magnetometry and electron paramagnetic resonance（EPR）.For samples with a low copper content（x0.5）,the copper ions have a tendency to occupy and substitute the Fe^3＋ at the tetrahedral（A） *** samples with a high copper content（x0.5）,most Cu^2＋ enter into the octahedral（B） *** of Fe^3＋ from octahedral sites to tetrahedral sites leads to the decrease of the saturation *** coercivity is observed for CuFe2O4 nanoparticles due to the strengthened magnetic anisotropy arisen from the Jahn-Teller effect of the octahedral copper *** dependence of magnetic properties of Mn0.8Cu0.2Fe2O4 nanoparticles on calcination temperature was *** cation distribution in Mn0.8Cu0.2Fe2O4 is sensitive to the calcination temperature.

关键词： Magnetically ordered material Sol-gel process Magnetization

Single-cell transcriptome landscape and antigen receptor dynamic during SARS-CoV-2 vaccination

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Genes & Diseases 2023年第4期10卷 1675-1686页

作者： Xiaojian cao Xiaohua Chen Yaqi Zhu Xiaojuan Gou Keyi Yan Bing Yang Dong Men Lei Liu Yong-an Zhang gang cao State Key Laboratory of Agricultural Microbiology College of Veterinary MedicineHuazhong Agricultural UniversityWuhanHubei 430072China Department of Laboratory Medicine Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 51015China Bio-Medical College Huazhong Agricultural UniversityWuhanHubei 430072China Department of Laboratory Medicine Maternal and Child Health Hospital of Hubei ProvinceWuhanHubei 430070China State Key Laboratory of Agricultural Microbiology College of FisheriesHuazhong Agricultural UniversityWuhanHubei 430072China Spatial FISH Co.Ltd. JiangmenHubei 529199China State Key Laboratory of Virology Wuhan Institute of VirologyCenter for Biosafety Mega-ScienceChinese Academy of SciencesWuhanHubei 430071China Department of Transfusion Medicine General Hospital of Central Theater CommandPLAWuhanHubei 430070China

Vaccination by inactivated vaccine is an effective strategy to prevent the ***,the detailed molecular immune response at single-cell level is poorly *** this study,we systematically delineated the landscape of the pre-and post-vaccination single-cell transcriptome,TCR(T cell antigen receptor)and BCR(B cell antigen re-ceptor)expression profile of vaccinated *** bulk TCR sequencing analysis of COV-ID-19 patients was also *** of a clonal CD8+T cell cluster expressingspecific TCR was identified in both vaccination candidates and COVID-19 *** clonalCD8+T cells showed high expression of cytotoxicity,phagosome and antigen presentationrelated *** cellecell interaction analysis revealed that monocytes and dendritic cellscould interact with these cells and initiate phagocytosis via ICAM1-ITGAM and ITGB2 ***,our study systematically deciphered the detailed immunological response duringSARS-CoV-2 vaccination and *** may facilitate understanding the immune responseand the T-cell therapy against COVID-19.

关键词： COVID-19 SARS-CoV-2 Single-cell sequencing TCR sequencing Vaccination