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Orofacial Clefts in High Prevalence Area of Birth Defects—Five Counties,Shanxi Province,China,2000–2020

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China CDC weekly 2021年第37期3卷 773-777页

作者： Jufen liu Yali Zhang Le Zhang linlin Wang Lei Jin Nicholas D E Greene zhiwen li Aiguo Ren Institute of Reproductive and Child Health/Key Laboratory of Reproductive Health National Health Commission of the People’s Republic of ChinaPeking UniversityBeijingChina Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijingChina UCL Great Ormond Street Institute of Child Health University College LondonLondonUK.

Summary What is already known on this topic?The prevalence of structural birth defects,especially neural tube defects,decreased after national folic acid(FA)supplementation *** is added by this report?The prevalence of orofacial clefts(OFCs)in five counties of Shanxi Province in northern China,including most subtypes except cleft palate,showed a downward trend in the past two *** this study,pre-perinatal prevalence increased due to earlier detection.

关键词： Shanxi defects downward

九江市蓼花剖面末次冰期中晚期沉积的粒度端元特征与气候变化

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热带地理 2023年第1期43卷 135-143页

作者：李世乾李志文周万蓬杜丁丁黎武标东华理工大学地球科学学院南昌330013 佛山科学技术学院环境与化学工程学院广东佛山528225 中国科学院地质与地球物理研究所北京100029

鄱阳湖湖滨地区广泛分布着晚第四纪风沙沉积序列。在星子县沙岭沙山进行野外调查后选择蓼花剖面开展工作,测试了地质时代和粒度,对粒度结果使用端元分析模型进行研究,探讨该区域末次冰期中晚期的气候变化规律。结果显示:该剖面由湖相-... 详细信息

鄱阳湖湖滨地区广泛分布着晚第四纪风沙沉积序列。在星子县沙岭沙山进行野外调查后选择蓼花剖面开展工作,测试了地质时代和粒度,对粒度结果使用端元分析模型进行研究,探讨该区域末次冰期中晚期的气候变化规律。结果显示:该剖面由湖相-古土壤-沙丘砂等沉积相叠覆堆积组成,形成于末次冰期中晚期(48.8—17.1 ka)。端元分析模型将粒度数据分解出3个不同的粒度端元,不同端元组分在垂向上呈峰谷交替的旋回变化,EM1代表粉砂端元组分,峰值对应湖相和古土壤发育时期;EM2和EM3代表中砂—粗砂端元组分,峰值对应沙丘砂发育期,这些峰谷交替变化的规律指示了末次冰期的季风演变以及气候波动变化,万年尺度上表现为LH10(48.8—39.9 ka)和LH3~LH5(28.1—17.1 ka)的冬季风强盛期,分别对应深海氧同位素的MIS3b和MIS2阶段。LH6~LH9(39.9—28.1 ka)为温暖的夏季风时期,对应深海氧同位素的MIS3a阶段。这些变化与YZ洞石笋氧同位素以及格陵兰冰心有良好的对应,与全球气候变化基本一致。

关键词：九江市蓼花剖面末次冰期中晚期粒度端元分析季风演变气候变化

Current study and prospect of the Old Red Sand along the southeast coast of China

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Research in Cold and Arid Regions 2012年第6期4卷 462-471页

作者： zhiwen li YuXiang Dong BaoSheng li FengNian Wang College of Earth Sciences East China Institute of Technology Nanchang Geography and Planning School Sun Yat-sen University Guangzhou School of Geography South China Normal University Guangzhou State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Department of Tourism Huizhou University

The Old Red Sand is composed of brown-red, red, or orange-yellow semi-cemented and medium-fine sand sediment, mainly dis- tributed along the southeast coast of China. Based on previous studies, this paper summarizes the distribution and forms, sedi- mentary characteristics, formation mechanism, developing age, reddening process and the paleo-environment, suggesting that the Old Red Sand is mainly aeolian sediment of Late Pleistocene Age. The reddening process is mainly the result of decomposition and oxidation of iron-containing minerals caused by hot and humid tropical and sub-tropical climate. In this study, existing prob- lems are discussed and the prospect of further research is presented as well.

关键词： southeast coast of China Old Red Sand current study situation prospects

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带电检测技术在变电运维中的应用分析

电力系统装备 2023年第8期 119-121页

作者：黎智文广东电网有限责任公司佛山供电局广东佛山528000

变电运维的主要作用是检查变电设备运行中存在的问题和风险,以此提升变电设备运行的稳定性和安全性,其主要依靠带电检测技术对设备进行检查,而在检测中任何一个小的失误都有可能会引发一场严重的安全事故。文章就带电检测技术在变电运... 详细信息

变电运维的主要作用是检查变电设备运行中存在的问题和风险,以此提升变电设备运行的稳定性和安全性,其主要依靠带电检测技术对设备进行检查,而在检测中任何一个小的失误都有可能会引发一场严重的安全事故。文章就带电检测技术在变电运维中的应用进行分析,以期为相关人员提供理论参考。

关键词：带电检测技术变电运维应用

Determination of molecular energies via variational-based quantum imaginary time evolution in a superconducting qubit system

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 1-11页

作者： zhiwen Zong Sainan Huai Tianqi Cai Wenyan Jin Ze Zhan Zhenxing Zhang Kunliang Bu liyang Sui Ying Fei Yicong Zheng Shengyu Zhang Jianlan Wu Yi Yin Zhejiang Province Key Laboratory of Quantum Technology and Device School of PhysicsZhejiang UniversityHangzhou 310027China Tencent Quantum Laboratory Shenzhen 518057China

As a valid tool for solving ground state problems,imaginary time evolution(ITE)is widely used in physical and chemical *** ITE-based algorithms in their quantum counterpart have recently been proposed and applied to some real *** experimentally realize the variational-based quantum imaginary time evolution(QITE)algorithm to simulate the ground state energy of hydrogen(H_2)and lithium hydride(li H)molecules in a superconducting qubit *** H_2 molecule is directly simulated using the 3-qubit circuit with unitary-coupled clusters(UCC)*** also combine QITE with the cluster mean-field(CMF)method to obtain an effective *** li H molecule is correspondingly simulated using the 3-qubit circuit with hardware-efficient *** comparison,the li H molecule is also directly simulated using the 4-qubit circuit with UCC ansatz at the equilibrium *** the experimental results show a convergence within 4 iterations,with high-fidelity ground state energy *** a more complex system in the future,the CMF may allow further grouping of interactions to obtain an effective Hamiltonian,then the hybrid QITE algorithm can possibly simulate a relatively large-scale system with fewer qubits.

关键词： quantum computation quantum algorithm superconducting qubit

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星形胶质细胞在凝胶环境下的三维培养

中国医学物理学杂志 2022年第4期39卷 504-509页

作者：李挚雯刘志成钱秀清首都医科大学生物医学工程学院北京100069 临床生物力学应用基础研究北京市重点实验室北京100069

目的:制备不同浓度的三维琼脂糖凝胶以进行星形胶质细胞的体外培养,从而寻找适合细胞生长的理想环境。方法:分别制备1%、2%、3%的琼脂糖凝胶,利用纳米压痕仪测量其弹性模量。星形胶质细胞在凝胶中培养1、3、5、7 d,观察细胞活性以及细... 详细信息

目的:制备不同浓度的三维琼脂糖凝胶以进行星形胶质细胞的体外培养,从而寻找适合细胞生长的理想环境。方法:分别制备1%、2%、3%的琼脂糖凝胶,利用纳米压痕仪测量其弹性模量。星形胶质细胞在凝胶中培养1、3、5、7 d,观察细胞活性以及细胞骨架的变化。结果:随着凝胶浓度的增加,琼脂糖凝胶弹性模量逐渐增加。2%的琼脂糖凝胶的弹性模量最接近筛板组织的弹性模量;在2%、3%琼脂糖凝胶环境下,细胞活性具有较高水平。随着细胞在凝胶中培养的时间增加,星形胶质细胞的突起逐渐伸出,细胞从球形向梭形或星形转变,更接近细胞真实的生长状态。结论:2%琼脂糖凝胶最接近星形胶质细胞在体内的生长环境,细胞成活率较高,是细胞体外三维培养的理想环境。

关键词：星形胶质细胞琼脂糖凝胶三维培养力学特性

在线教学平台交互性、体验价值和持续使用意愿的关系研究——一个有调节的中介效应

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管理评论 2022年第6期34卷 153-161页

作者：熊强李文元陈晓燕李治文江苏大学管理学院镇江212013

本文基于交互影响距离理论,以功能体验和情感体验为中介变量,学生学习自主性为调节变量,构建在线教学平台的交互性对平台持续使用意愿的影响结构方程模型,运用AMOS 23分析研究发现:在线教学平台交互性通过功能体验和情感体验的完全中介... 详细信息

本文基于交互影响距离理论,以功能体验和情感体验为中介变量,学生学习自主性为调节变量,构建在线教学平台的交互性对平台持续使用意愿的影响结构方程模型,运用AMOS 23分析研究发现:在线教学平台交互性通过功能体验和情感体验的完全中介作用显著正向影响平台的持续使用意愿;学习自主性显著正向调节交互性与功能体验、功能体验与情感体验的关系;学习自主性调节功能体验在交互性和情感体验之间的中介效应,即学习自主性越强,功能体验在其中的中介作用越强。本研究丰富了在线教学平台持续使用意愿的研究框架,为改善在线教学行为和教学平台设计提供指导。

关键词：在线教学平台交互性持续使用意愿体验价值学习自主性

Selective Hydrodeoxygenation of lignin-Derived Vanillin via Hetero-Structured High-Entropy Alloy/Oxide Catalysts

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Energy & Environmental Materials 2024年第03期 206-214页

作者： Yan Sun Kaili liang Ren Tu Xudong Fan Charles Q.Jia zhiwen Jia Yingnan li Hui Yang Enchen Jiang Hanwen liu Yonggang Yao Xiwei Xu Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural University Department of Chemical Engineering and Applied Chemistry University of Toronto State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and EngineeringHuazhong University of Science and Technology

The chemoselective hydrodeoxygenation of natural lignocellulosic materials plays a crucial role in converting biomass into value-added *** their complex molecular structures often require multiple active sites synergy for effective activation and achieving high ***,it is reported that a high-entropy alloy (HEA) on high-entropy oxide (HEO)hetero-structured catalyst for highly active,chemoselective,and robust vanillin *** heterogenous HEA/HEO catalysts were prepared by thermal reduction of senary HEOs (NiZnCuFeAIZrOx),where exsolvable metals (e.g.,Ni,Zn,Cu) in situ emerged and formed randomly dispersed HEA nanoparticles anchoring on the HEO *** catalyst exhibits excellent catalytic performance:100%conversion of vanillin and 95%selectivity toward high-value 2-methyl-4 methoxy phenol at low temperature of 120℃,which were attributed to the synergistic effect among HEO matrix(with abundant oxygen vacancies),anchored HEA nanoparticles (having excellent hydrogenolysis capability),and their intimate hetero-interfaces(showing strong electron transferring effect).Therefore,our work reported the successful construction of HEA/HEO heterogeneous catalysts and their superior multifunctionality in biomass conversion,which could shed light on catalyst design for many important reactions that are complex and require multifunctional active sites.

关键词：

Nanocellulose Composites—Properties and Applications

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