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Epitaxial growth of hyperbranched Cu/Cu2O/CuO coreshell nanowire heterostructures for lithium-ion batteries

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Nano Research 2015年第8期8卷 2763-2776页

作者： Yuxin Zhao Ying Zhang Hu Zhao Xuejin Li Yanpeng Li Ling wen Zifeng Yan ziyang Huo State Key Laboratory for Heavy Oil Processing PetroChina Key Laboratory of Catalysis China University of Petroleum Qingdao 266580 China SINOPEC Safety Engineering Institute No 218 Yan'an 3 Road Shinan District Qingdao 266071 China China Petroleum Pipeline Bureau 87 Guangyang Road Langfang 065000 China Queensland Micro- and Nanotechnology Centre Nathan Campus Griffith University 170 Kessels Road NATHAN QLD 4111 Australia

The careful design of nano-architectures and smart hybridization of expected active materials can lead to more advanced properties. Here we have engineered a novel hierarchical branching Cu/Cu2O/CuO heteronanostructure by combining a facile hydrothermal method and subsequent controlled oxidation process. The fine structure and epitaxial relationship between the branches and backbone are investigated by high-resolution transmission electron microscopy. Moreover, the evolution of the branch growth has also been observed during the gradual oxidation of the Cu nanowire surface. The experimental results suggest that the surface oxidation needs to be performed via a two-step exposure process to varying humidity in order to achieve optimized formation of a core-shell structured branching architecture. Finally, a proof-of-concept of the function of such a hierarchical framework as the anode material in lithium-ion batteries is demonstrated. The branching core-shell heterostructure improves battery performance by several means：（i） The epitaxially grown branches provide a high surface area for enhanced electrolyte accessibility and high resistance to volume change induced by Li^＋ intercalation/extraction; （ii） the core-shell structure with its well-defined heterojunction increases the contact area which facilitates effective charge transport during lithiation; （iii） the copper core acts as a current collector as well as providing structural reinforcement.

关键词： nanowires copper oxides epitaxial growth heterostructure lithium-ion battery

基于Ipad认知评估训练软件对老年轻度认知功能障碍的筛查

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神经疾病与精神卫生 2019年第3期19卷 292-295页

作者：孙跃岐王薇徐毅徐虹阳志平张曦吕晨光黄成维温子阳北京小汤山医院科教处 102211 北京小汤山医院信息中心 102211 北京小汤山医院门诊部 102211 北京安人心智科技有限公司 100078

目的评估Ipad 认知评估训练软件(具有筛查和训练功能)对老年轻度认知功能障碍的筛查效果。方法选取2015 年6 月— 2016 年12 月在北京小汤山医院健康体检的老年人为研究对象,采用 Ipad 认知评估训练软件和北京版蒙特利尔认知量表(MoCA)... 详细信息

目的评估Ipad 认知评估训练软件(具有筛查和训练功能)对老年轻度认知功能障碍的筛查效果。方法选取2015 年6 月— 2016 年12 月在北京小汤山医院健康体检的老年人为研究对象,采用 Ipad 认知评估训练软件和北京版蒙特利尔认知量表(MoCA)同时进行筛查评估。结果以北京版MoCA 评分的不同受教育年限不同界值来判断,老年认知功能障碍的检出率是23.53%(160/680)。以Ipad 认知评估训练软件筛查,老年轻度认知功能障碍的检出率是24.85%(169/680)。两种方法检出率之间差异无统计学意义(P> 0.05)。两种方法检出结果存在一致性(Kappa=0.755,P< 0.001)。结论可以使用Ipad 认知功能评估训练软件进行老年认知障碍的初步筛查。

关键词：老年人认知障碍 Ipad 认知评估训练软件

Composite electrolyte with self-inserted structure and all-trans F conformation provides fast Li^(+)transport for solid-state Li metal batteries

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InfoMat 2024年第11期6卷 81-93页

作者： ziyang Liang Chang Liu Xiang Bai Jiahui Zhang Xinyue Chang Lixiang Guan Tiantian Lu Huayun Du Yinghui Wei Qian Wang Tao Wei wen Liu Henghui Zhou College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuanShanxithe People's Republic of China Shanxi Energy Internet Research Institute TaiyuanShanxithe People's Republic of China College of Chemistry and Molecular Engineering Peking UniversityBeijingthe People's Republic of China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiangthe People's Republic of China State Key Lab of Chemical Resource Engineering College of Science and College of Energy Beijing University of Chemical TechnologyBeijingthe People's Republic of China

Solid-state Li metal battery has attracted increasing interests for its potentiallyhigh energy density and excellent safety assurance, which is a promising candidatefor next generation battery system. However, the low ionic conductivityand Li^(+) transport number of solid-state polymer electrolytes limit their practicalapplication. Herein, a composite polymer electrolyte with self-insertedstructure is proposed using the layered double hydroxides (LDHs) as dopant toachieve a fast Li^(+) transport channel in poly(vinylidene-co-trifluoroethylene) [P(VDF-TrFE)] based polymer electrolyte. In such a composite electrolyte, P(VDF-TrFE) polymer has an all-trans conformation, in which all fluorineatoms locate on one side of the polymer chain, providing fast Li^(+) transporthighways. Meanwhile, the LDH can immobilize the anions of Li salts based onthe electrostatic interactions, promoting the dissociation of Li salts, therebyenhancing the ionic conductivity (6.4 × 10^(-4) S cm^(-1)) and Li^(+) transferencenumber (0.76). The anion immobilization effect can realize uniform electricfield distribution at the anode surface and suppress the dendritic Li ***, the hydrogen bonding interaction between LDH and polymerchains also endows the composite electrolyte with strong mechanical ***, at room temperature, the Li jj Li symmetric cells can be stablycycled over 1000 h at a current density of 0.2 mA cm^(-2), and the full cells withLiFePO_(4) cathode deliver a high capacity retention (>95%) after 200 cycles. This work offers a promising route to construct solid-state polymer electrolytes withfast Li^(+) transport.

关键词： LDH Li metal batteries Li^(+)transport channel P(VDF-TrFE) solid-state polymer electrolytes

鸡胰岛素耐受性及血液葡萄糖稳态调节研究进展

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动物营养学报 2022年第4期34卷 2123-2129页

作者：王子阳陈文河南农业大学动物科技学院郑州450046

鸡具有极强的胰岛素耐受性,空腹血液葡萄糖浓度是大部分哺乳动物的2倍,却无任何有害效应出现。至今关于鸡对长期高血糖和胰岛素的耐受性机制尚未知。本文针对鸡特殊的胰岛素耐受性及胰岛素信号传导通径、葡萄糖转运体(GLUT)等进行综述,... 详细信息

鸡具有极强的胰岛素耐受性,空腹血液葡萄糖浓度是大部分哺乳动物的2倍,却无任何有害效应出现。至今关于鸡对长期高血糖和胰岛素的耐受性机制尚未知。本文针对鸡特殊的胰岛素耐受性及胰岛素信号传导通径、葡萄糖转运体(GLUT)等进行综述,以期为解析鸡的糖代谢机制提供参考,也为人类糖尿病预防与治疗提供思路。

关键词：鸡胰岛素抵抗胰岛素信号通经糖代谢葡萄糖转运体

基层治理法治化进程中司法所的现状、困境及其应对——以132个司法所为分析样本

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华中师范大学学报（人文社会科学版） 2023年第1期62卷 31-42页

作者：丁文程子扬华中师范大学法学院湖北武汉430079

全面依法治国是国家治理的一场深刻革命,其基础和工作重点均在基层。司法所作为我国最基层的司法行政机构,承担着指导调解、受委托承担社区矫正工作、参与基层普法依法治理、组织提供基层公共法律服务、协调开展刑满释放人员安置帮教等... 详细信息

全面依法治国是国家治理的一场深刻革命,其基础和工作重点均在基层。司法所作为我国最基层的司法行政机构,承担着指导调解、受委托承担社区矫正工作、参与基层普法依法治理、组织提供基层公共法律服务、协调开展刑满释放人员安置帮教等职责任务。实证调研表明,绝大多数司法所的组织现状并未达到规范性文件的要求;尽管司法所已尽可能地形成调适性的工作机制,但其职能呈现与应然之间仍存在较大张力。究其原因在于司法所面临主体异化、职能超载、法治资源冲突、法治权威阙如等法治困境。优化司法所的职能定位、完善司法所的工作机制、树立司法所的法治权威,有利于司法所走出法治困境,以确保全面依法治国的决策部署落实到“最后一公里”。

关键词：基层治理司法所基层法治建设法治困境

Molecule-assisted modulation of the high-valence Co^(3+)in 3D honeycomb-like Co_(x)S_(y)networks for high-performance solid-state asymmetric supercapacitors

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Science China Materials 2021年第4期64卷 840-851页

作者： Haiyan Wang Ying Yang Qinghao Li wen Lu Jiqiang Ning Yijun Zhong ziyang Zhang Yong Hu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of ChemistryZhejiang Normal UniversityJinhua 321004China Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

Modulating the oxidation states of transition metal species has been regarded as a promising strategy to tune the redox activity and achieve more active sites in electrode *** this work,a unique three-dimensional(3D)honeycomb-like cobalt sulfide(Co_(x)S_(y))network organized by cross-linked nanosheets(Co_(x)S_(y)-T NSs)was prepared via a simple triethanolamine(TEOA)-assisted self-templating ***,it has been found for the first time that the introduction of TEOA in the reaction effectively increases the ratio of high-valence Co^(3+)in the final *** from the synergetic effect of the tailored high-valence Co^(3+)with the 3D network structure,the Co_(x)S_(y)-T NS electrode exhibits a maximum specific capacity of 351 mA h g^(-1)(2635 F g^(-1))at 5 A g^(-1)as well as excellent cycling ***,with the solid-state asymmetric supercapacitor(ASC)constructed based on the Co_(x)S_(y)-T NSs and activated carbon(AC)electrodes,a high energy density up to 81.62 W h kg^(-1)has been achieved at the power density of 0.81 kW kg^(-1)and 96.2%capacitance is preserved after 7000 cycles,indicating robust cycling *** result highlights the simple approach of simultaneously tailoring highvalence metal species and constructing 3D network structure toward high-performance electrode materials for energy storage and conversion.

关键词： CoxSy triethanolamine-assisted self-templating strategy high-valence Co^(3+) 3D network solid-state asymmetric supercapacitors

Pharmacological inhibition of BAP1 recruits HERC2 to competitively dissociate BRCA1-BARD1, suppresses DNA repair and sensitizes CRC to radiotherapy

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Acta Pharmaceutica Sinica B 2023年第8期13卷 3382-3399页

作者： Xin Yue Tingyu Liu Xuecen Wang Weijian Wu Gesi wen Yang Yi Jiaxin Wu ziyang Wang Weixiang Zhan Ruirui Wu Yuan Meng Zhirui Cao Liyuan Le wenyan Qiu Xiaoyue Zhang Zhenyu Li Yong Chen Guohui Wan Xianzhang Bu Zhenwei Peng Ran-yi Liu State Key Laboratory of Oncology in South China Sun Yat-sen University Cancer CenterGuangzhou 510060China Department of Radiation Oncology the First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China School of Pharmaceutical Sciences Sun Yat-sen UniversityGuangzhou 510006China Department of Clinical Research Guangzhou Institute of Respiratory Healththe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510120China Department of Gastrointestinal Surgery the First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China Department of Oncology the Sixth Affiliated HospitalSun Yat-sen UniversityGuangzhou 510655China Department of Traditional Chinese Medicine the First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China Zhongshan School of Medicine Sun Yat-sen UniversityGuangzhou 510080China Laboratory of Chemical Oncogenomics Guangdong Provincial Key Laboratory of Chemical GenomicsPeking University Shenzhen Graduate SchoolShenzhen 518055China

Radiotherapy is widely used in the management of advanced colorectal cancer(CRC).However,the clinical efficacy is limited by the safe irradiated *** tumor cells to radiotherapy via interrupting DNA repair is a promising approach to conquering the *** BRCA1-BARD1 complex has been demonstrated to play a critical role in homologous recombination(HR)DSB repair,and its functions may be affected by HERC2 or *** evidence illustrates that the ubiquitination-deubiquitination balance is involved in these processes;however,the precise mechanism for the cross-talk among these proteins in HR repair following radiation hasn’t been *** activity-based profiling,we identified PT33 as an active entity for HR repair ***,we revealed that BAP1 serves as a novel molecular target of PT33 via a CRISPR-based deubiquitinase ***,pharmacological covalent inhibition of BAP1 with PT33 recruits HERC2 to compete with BARD1 for BRCA1 interaction,interrupting HR ***,PT33 treatment can substantially enhance the sensitivity of CRC cells to radiotherapy in vitro and in ***,these findings provide a mechanistic basis for PT33-induced HR suppression and may guide an effective strategy to improve therapeutic gain.

关键词： Pharmacological inhibition BAP1 HERC2recruitment BRCA1 BARD1 Competitively dissociation HR-Mediated DNArepair,CRCradiosensitization

添加Ni对激光熔覆CuAl10铜合金组织与性能的影响

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中国激光 2015年第3期42卷 227-233页

作者：杨胶溪文强李子阳肖志勇北京工业大学激光工程研究院北京100124

为进一步提高Cu Al10合金激光熔覆层的耐蚀性能,研究添加不同质量分数的Ni对Cu Al10熔覆层组织及性能的影响。采用HPDL-D30半导体激光设备,用同步送粉的方式在316L不锈钢基体表面进行激光熔覆。借助扫描电子显微镜(SEM)、能谱仪(EDS)、... 详细信息

为进一步提高Cu Al10合金激光熔覆层的耐蚀性能,研究添加不同质量分数的Ni对Cu Al10熔覆层组织及性能的影响。采用HPDL-D30半导体激光设备,用同步送粉的方式在316L不锈钢基体表面进行激光熔覆。借助扫描电子显微镜(SEM)、能谱仪(EDS)、X射线衍射(XRD)对激光熔覆层进行组织、成分及物相分析,并使用显微硬度计进行硬度分析和电化学工作站进行耐蚀性能分析。研究结果表明:添加Ni元素的铜合金熔覆层与基体金属冶金结合,组织分布均匀;添加Ni能显著提高激光熔覆层的耐蚀性能,随着Ni含量的增加,其耐蚀性呈增强趋势,Ni质量分数为6.0%时,耐蚀性能达到最优;未添加Ni元素的熔覆层物相主要以α-Cu,α-Fe,Al Fe3,Cu9Al4组成,添加Ni元素的熔覆层物相主要由α-Cu,α-(Cu,Ni),Al Cu3,Cu9Al4组成。

关键词：激光技术激光熔覆铜合金微观组织 α-(Cu,Ni)相耐蚀性能

Phosphorus oxoanion-intercalated layered double hydroxides for high-performance oxygen evolution

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Nano Research 2017年第5期10卷 1732-1739页

作者： Ma Luo Zhao Cai Cheng Wang Yongmin Bi Li Qian Yongchao Hao Li Li Yun Kuang Yaping Li Xiaodong Lei ziyang HUO wen Liu Hailiang Wang Xiaoming Sun Xue Duan State Key Laboratory of Chemical Resource Engineering College of Energy Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Department of Chemistry and Energy Sciences Institute Yale University 810 West Campus Drive West Haven CT 06516 USA Chinese Research Academy of Environmental Sciences Beijing 100012 China Queensland Micro- and Nanotechnology Centre Griffith University Brisbane QLD4109 Australia These authors contributed equally to this work.

Rational design and controlled fabrication of efficient and cost-effective electrodes for the oxygen evolution reaction （OER） are critical for addressing the unpre- cedented energy crisis. Nickel-iron layered double hydroxides （NiFe-LDHs） with specific interlayer anions （i.e. phosphate, phosphite, and hypophosphite） were fabricated by a co-predpitation method and investigated as oxygen evolution electrocatalysts. Intercalation of the phosphorus oxoanion enhanced the OER activity in an alkaline solution; the optimal performance （i.e., a low onset potential of 215 mV, a small Tafel slope of 37.7 mV/dec, and stable electrochemical behavior） was achieved with the hypophosphite-intercalated NiFe-LDH catalyst, demonstrating dramatic enhancement over the traditional carbonate-intercalated NiFe-LDH in terms of activity and durability. This enhanced performance is attributed to the interaction between the intercalated phosphorous oxoanions and the edge-sharing MO6 （M = Ni, Fe） layers, which modifies the surface electronic structure of the Ni sites. This concept should be inspiring for the design of more effective LDH-based oxygen evolution electrocatalvsts.

关键词： layered double hydroxide oxygen evolution reaction phosphate phosphite hypophosphite