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High-pressure study of topological semimetals XCd_(2)Sb_(2)(X=Eu and Yb)

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Chinese Physics B 2022年第7期31卷 65-70页

作者： Chuchu zhu Hao Su Erjian cheng Lin Guo Binglin Pan Yeyu Huang Jiamin Ni Yanfeng Guo Xiaofan Yang Shiyan Li State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200438China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China Shanghai Research Center for Quantum Sciences Shanghai 201315China

Topological materials have aroused great interest in recent years,especially when magnetism is *** can effectively tune the topological states and possibly induce *** we report the high-pressure study of topological semimetals XCd_(2)Sb_(2)(X=Eu and Yb),which have the same crystal *** antiferromagnetic(AFM)Weyl semimetal EuCd_(2)Sb_(2),the Néel temperature(TN)increases from 7.4 K at ambient pressure to 50.9 K at 14.9 *** pressure is above 14.9 GPa,the AFM peak of resistance disappears,indicating a non-magnetic *** paramagnetic Dirac semimetal candidate YbCd_(2)Sb_(2),pressure-induced superconductivity appears at 1.94 GPa,then Tc reaches to a maximum of 1.67 K at 5.22 GPa and drops to zero at about 30 GPa,displaying a dome-shaped temperature–pressure phase ***-pressure x-ray diffraction measurement demonstrates that a crystalline-to-amorphous phase transition occurs at about 16 GPa in YbCd_(2)Sb_(2),revealing the robustness of pressure-induced superconductivity against structural *** structural phase transition may also occur in EuCd_(2)Sb_(2),causing the disappearance of *** results show that XCd_(2)Sb_(2)(X=Eu and Yb)is a novel platform for exploring the interplay among magnetism,topology,and superconductivity.

关键词： high pressure topological semimetal magnetism superconductivity

Experimental investigation of flow past a circular cylinder with hydrophobic coating

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Journal of Hydrodynamics 2018年第6期30卷 992-1000页

作者： Jun Wen Hai-bao Hu zhuang-zhu Luo Zhao-zhu Zhang School of Marine Science and Technology Northwestern Polytechnical University Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences

A series of experiments are performed in a gravitational low-speed water tunnel to investigate the influence of the hydrophobic coating on the flow past a circular cylinder. The mean velocity and turbulence intensity profiles behind the cylinders are measured using the hot-film anemometer while the separation angles are obtained with the flow visualization technology. For the Reynolds number lower than 3 800, the hydrophobic coatings are in the Cassie state, the velocity deficit and the turbulence intensity in the wake of the hydrophobic cylinders are lower than those of the smooth cylinders which implies the drag reduction effect of the hydrophobic coatings. When the Reynolds number becomes higher than 6 600, the hydrophobic coatings turn into the Wenzel state. Through decomposing the velocity data in the turbulent wake into different scales based on the orthogonal wavelet transform, it is found that the total turbulence intensity in the wake of the hydrophobic cylinders becomes almost the same as in the wake of the smooth cylinders while the intensity of the large scales of vortex components in the wake of the hydrophobic cylinders is still lower. Furthermore, the separation angles show the same trend as a function of the Reynolds number but always take smaller values for the hydrophobic cylinders.

关键词： Hydrophobic coating drag reduction vortex structures separated flows

Asymptotics for Kernel Estimation of Slicing Average Third-Moment Estimation

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Acta Mathematicae Applicatae Sinica 2006年第1期22卷 103-114页

作者： Li-ping zhu Li-xing zhu East China Normal University Shanghai 200062 China Hong Kong Baptist University Hong Kong

To estimate central dimension-reduction space in multivariate nonparametric rcgression, Sliced Inverse Regression （SIR）, Sliced Average Variance Estimation （SAVE） and Slicing Average Third-moment Estimation （SAT） have been developed, Since slicing estimation has very different asymptotic behavior for SIR, and SAVE, the relevant study has been madc case by case, when the kernel estimators of SIH and SAVE share similar asymptotic properties. In this paper, we also investigate kernel estimation of SAT. We. prove the asymptotic normality, and show that, compared with tile existing results, the kernel Slnoothing for SIR, SAVE and SAT has very similar asymptotic behavior,

关键词： Asymptotic normality bandwidth selection dimension reduction inverse regression method kernel estimation

Covalence bridge atomically precise metal nanocluster and metalorganic frameworks for enhanced photostability and photocatalysis

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Nano Research 2023年第1期16卷 1527-1532页

作者： Aimin Yao Yuanxin Du Meng Han Yan Wang Jiashen Hu Qingtao zhu Hongting Sheng Manzhou zhu Department of Materials Science and Engineering Centre for Atomic Engineering of Advanced MaterialsKey Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationKey Laboratory of Functional Inorganic Material Chemistry of Anhui ProvinceAnhui UniversityHefei 230601China

Metal nanoclusters(NCs)with precise structure and ultrasmall size have attracted great interests in ***,the poor stability has limited its large-scale ***,we proposed the“covalence bridge”strategy to effectively connect atomically precise metal NCs and metal-organic *** from the covalent linkage,the synthesized UiO-66-NH2-Au25(LCys)18 showed outstanding stability after 16 h ***,the covalence bridge created a strong metal-support interaction between the two components and provided an effective charge transport channel and thereby enhanced photocatalytic ***-66-NH2-Au25(L-Cys)18 displayed an exceptional photocatalytic H2 production rate,which is 21 and 90 times higher than that of UiO-66-NH2/Au25(PET)18(made by physically combination)and bare UiO-66-NH2,*** and kinetic studies demonstrated that UiO-66-NH2-Au25(L-Cys)18 exhibited higher charge transfer efficiency,lower overpotential of water reduction and activation energy barrier compared with its counterparts.

关键词： atomically precise nanoclusters metal-organic frameworks covalent binding photostability photocatalytic hydrogen production

Simultaneous and Spatial Quantification of Telomerase Activity and DNA Methylation in Living Cells by a Deformable Satellite Nanocapsule

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CCS Chemistry 2021年第4期3卷 1231-1244页

作者： Shan Huang cheng Ma Jiahao Lin Wenjing Wang Yizhu Xu Xingxin Wu Jian-Rong Zhang Jun-Jie zhu School of Chemistry and Chemical Engineering State Key Laboratory of Analytical Chemistry for Life ScienceNanjing UniversityNanjingJiangsu 210023 College of Science State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanHubei 430070 School of Life Sciences State Key Laboratory of Pharmaceutical BiotechnologyNanjing UniversityNanjingJiangsu 210023 School of Chemistry and Life Science Jinling CollegeNanjing UniversityNanjingJiangsu 210089

Telomerase plays an essential role in many biological *** methylation regulates the expression of many genes,including ***,we propose a deformable satellite nanocapsule fluorescein isothiocyanate(FITC)-hollowbowl mesoporous organicsilica@gold nanoparticles-methyl-CpG-binding protein 2(MECP 2)-silver nanoclusters(FHBMO@AMA),for simultaneous quantitative detection of both cytoplasmic telomerase activity and the degree of DNA *** strategy enabled spatial-based detection in *** total cytoplasmic telomerase activity was detected by fluorescence energy resonance transfer(FRET)between FHBMO and gold nanoparticles(Au NPs),while the DNA methylation in the nucleus was detected by enhanced fluorescence of silver nanoclusters(Ag NCs).Furthermore,FHBMO@AMA could intuitively distinguish between the differences in telomerase expression in cells during the DNA synthesis period at the mitotic phase(S/M)of the cell ***,the ratio of the two detections(telomerase activity/DNA methylation)significantly correlated with the efficacy of anticancer *** the same time,there was no apparent linear relationship between any single detection target and the efficacy of the anticancer ***,based on the relationship between telomerase activity and DNA methylation,our newly developed approach serves as new and feasible method for evaluating the efficacy of anticancer drugs,thereby,extending the technology toolbox for precision in medical and pharmaceutical analysis of drug potency.

关键词： telomerase DNA methylation simultaneous detection single-cell level the efficacy of anticancer drugs

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法律与政治:共生中的超越和博弈

现代法学 2012年第6期34卷 56-63页

作者：周祖成西南政法大学重庆401120

法律与政治具有共生性,共同服务于社会目标与价值。虽然在形式上法律表现为政治的产物,依凭政治权力和政治组织而存在,但法律与政治是基于社会结构内在需要的不同而存在,具有基于社会结构的差异性和独立性。由于形式上的结合,人们往往... 详细信息

法律与政治具有共生性,共同服务于社会目标与价值。虽然在形式上法律表现为政治的产物,依凭政治权力和政治组织而存在,但法律与政治是基于社会结构内在需要的不同而存在,具有基于社会结构的差异性和独立性。由于形式上的结合,人们往往把法律混同于政治,导引出法律的非结构性作用,变异为外在的政治工具;也正因为存在基于社会结构的实质性差异,法律才可以与政治适度分离并超越政治。但其过程充满以社会事件形式表现出来的冲突和博弈,通过这些冲突性社会事件,法律日渐进化为国家和社会之间的平衡互动性制度机制,在实现国家治理的同时能够成为公民维护自身利益的制度依靠。

关键词：法律政治社会权利保障平衡互动

基于SBM-DEA模型的江苏省碳排放效率研究

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国土与自然资源研究 2025年第1期 44-49页

作者：朱凡凡宋辉冯欢盐城工学院经济管理学院江苏盐城224051

本文运用MaxDEA9软件,基于非期望产出的SBM-DEA模型和Malmquist指数法从静态和动态两个方面研究2010-2021年江苏省及其13个地级市的碳排放效率。结果表明,(1)江苏省的整体碳排放效率在2010-2021年间稳步增长,并且在2019年开始达到有效,... 详细信息

本文运用MaxDEA9软件,基于非期望产出的SBM-DEA模型和Malmquist指数法从静态和动态两个方面研究2010-2021年江苏省及其13个地级市的碳排放效率。结果表明,(1)江苏省的整体碳排放效率在2010-2021年间稳步增长,并且在2019年开始达到有效,在空间上呈现苏北大于苏南大于苏中的不均匀分布格局。(2)江苏省碳排放效率的平均增长速度呈现苏北大于苏中大于苏南的趋势。(3)江苏省及其13个地级市技术变化指数变动对碳排放效率增长有关键作用,碳排放效率各期增长速度受到当期技术发展水平的制约。

关键词： “双碳”目标碳排放效率 SBM-DEA模型资源配置

四川麸醋醅中功能芽孢杆菌的分离鉴定及发酵性能评价

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食品工业科技 2025年第2期46卷 122-131页

作者：武雨薇帖余唐之兴朱海燕李宇薇朱文优王新惠尹礼国成都大学食品与生物工程学院宜宾学院固态发酵资源利用四川省重点实验室宜宾学院农林与食品工程学部

芽孢杆菌作为四川麸醋发酵过程中重要的功能微生物，对稳定麸醋品质具有积极意义。本研究从四川麸醋醅中筛选、分离部分功能芽孢杆菌，通过生理生化试验、16S rRNA测序对菌株进行鉴定，对筛选鉴定的菌株进行耐酸、耐乙醇、耐温的发酵性... 详细信息

芽孢杆菌作为四川麸醋发酵过程中重要的功能微生物，对稳定麸醋品质具有积极意义。本研究从四川麸醋醅中筛选、分离部分功能芽孢杆菌，通过生理生化试验、16S rRNA测序对菌株进行鉴定，对筛选鉴定的菌株进行耐酸、耐乙醇、耐温的发酵性能研究。结果表明共筛选出5株发酵优良的芽孢杆菌，分别为库氏类芽孢杆菌BA-6（Paenibacillus cookii）、贝莱斯芽孢杆菌BA-9（Bacillus velezensis）、热带芽孢杆菌BB-5（Bacillus tropicus）、枯草芽孢杆菌BB-13（Bacillus subtilis）、Calidifontibacillus erzurumensis BC-11，且该5株芽孢杆菌在30～40℃，pH5～7条件下能较好生长(OD600=0.23～0.52)，具有一定的环境耐受性。部分芽孢杆菌水解蛋白（B. velezensis BA-9蛋白水解圈：3.7±0.3）和淀粉（P. cookie BA-6淀粉水解圈：3.8±0.5）的能力较强。为了进一步探究其在麸醋酿造中的应用，将芽孢杆菌与巴氏醋杆菌进行模拟混合固态发酵，研究表明，接种P. cookie BA-6、B. velezensis BA-9、C. erzurumensis BC-11可提高总酸、乳酸、乙酸、挥发性风味物质（苯甲醇、异戊醇、苯乙醇、愈创木酚等）含量，从而有效提升醋醅发酵品质。综上所述，本研究筛选的5株芽孢杆菌有利于醋醅发酵过程风味物质形成，研究结果为麸醋强化发酵提升其品质奠定理论基础。

关键词：四川麸醋醋醅芽孢杆菌固态发酵风味物质

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板坯连铸机动态轻压下过程控制系统的研究与实现

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冶金自动化 2007年第1期31卷 51-54+65页

作者：祭程朱苗勇程乃良东北大学材料与冶金学院上海宝钢集团梅山钢铁股份有限公司

梅钢2#连铸机动态轻压下二级过程控制系统是国内自主研发并投产应用的系统。该系统采用客户端/服务器模式架构,包括了系统管理、数据通信、数据处理、模型计算等功能模块,通过系统各模块的协作,实现了板坯连铸生产中二冷和轻压下的动态... 详细信息

梅钢2#连铸机动态轻压下二级过程控制系统是国内自主研发并投产应用的系统。该系统采用客户端/服务器模式架构,包括了系统管理、数据通信、数据处理、模型计算等功能模块,通过系统各模块的协作,实现了板坯连铸生产中二冷和轻压下的动态控制。该系统已正式投产应用,产品质量达到了较高水平。

关键词：板坯连铸动态轻压下过程控制