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陕西高校智慧体育教学融合路径发展研究

办公自动化 2024年第17期29卷 33-35页

作者：郭森张波温晴徐小平新疆铁道职业技术学院乌鲁木齐830011 陕西工业职业技术学院咸阳712000

随着信息技术的飞速发展,智慧体育的概念逐渐深入人心。作为培养高素质人才的重要基地,陕西高校体育教学的智慧化、数字化改革势在必行。文章旨在探讨陕西高校智慧体育教学融合路径的发展,结合理工科的技术背景,从基础设施建设、数据化... 详细信息

随着信息技术的飞速发展,智慧体育的概念逐渐深入人心。作为培养高素质人才的重要基地,陕西高校体育教学的智慧化、数字化改革势在必行。文章旨在探讨陕西高校智慧体育教学融合路径的发展,结合理工科的技术背景,从基础设施建设、数据化管理、个性化教学和智慧化训练等方面,分析智慧体育在教学中的应用及效果,并提出相应的建议和对策。

关键词：陕西高校智慧体育教学融合路径发展

Well-defined bis(phenolate) lanthanide methoxides as efficient initiators for the polymerization of cyclic carbonate and lactide

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Chinese Science Bulletin 2007年第12期52卷 1623-1628页

作者： xu xiaoping YAO YingMing ZHANG Yong SHEN Qi Key Laboratory of Organic Synthesis of Jiangsu Province Department of Chemistry and Chemical Engineering Dushu Lake Campus Suzhou University Suzhou 215123 China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

Lanthanide methoxides supported by carbon-bridged bis(phenolate) ligands 2,2′-methylene-bis(6-tert- butyl-4-methylphenoxo) (MBMP2-) [(MBMP)Ln( μ-OMe)(THF)2]2 (Ln = Nd (1), Yb (2)) were synthesized in high yields by the protolysis reaction using (C5H5)3Ln(THF) as starting materials, and complex 1 was structurally characterized. The coordination geometry around the center metal can be best described as a distorted octahedron. Complexes 1 and 2 were shown to be efficient initiators for the ring-opening polymerization of 2,2-dimethyltrimethylene carbonate (DTC) and L-lactide. The mechanism of DTC polymerization was explored by the end group analysis of the oligomer.

关键词：稀土元素甲醇盐二苯酚盐配体丙交酯碳酸盐聚合物

ICP-AES法测定左乙拉西坦注射液中微量元素含量

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生物化工 2024年第2期10卷 127-129页

作者：朱晓蕾徐晓萍董耀江苏省生产力促进中心江苏南京210001

目的:建立电感耦合等离子体原子发射光谱法(ICP-AES)测定左乙拉西坦注射液中微量元素硅、硼、铝和钡含量的分析方法。方法:样品经酸化后直接用ICP-AES分析,以硅288.158 nm、硼249.772 nm、铝396.152 nm和钡493.408 nm为检测波长,建立标... 详细信息

目的:建立电感耦合等离子体原子发射光谱法(ICP-AES)测定左乙拉西坦注射液中微量元素硅、硼、铝和钡含量的分析方法。方法:样品经酸化后直接用ICP-AES分析,以硅288.158 nm、硼249.772 nm、铝396.152 nm和钡493.408 nm为检测波长,建立标准方程,考察仪器精密度、样品重复性和回收率。结果:线性范围:硅0.5~5.0 mg/L,硼0.1~1.0 mg/L,铝1.0~10.0 mg/L,钡0.01~0.10 mg/L,线性相关系数均大于0.9995;检出限:硅0.044 mg/L、硼0.006 mg/L、铝0.017 mg/L和钡0.0005 mg/L;加标回收率:硅96.3%~103.1%,硼90.0%~95.0%,铝101.3%~106.0%,钡102.0%~105.0%。结论:该测定方法快速、准确、灵敏度高,适用于药品中包装材料迁移微量元素含量变化的研究。

关键词：电感耦合等离子体原子发射光谱法左乙拉西坦注射液微量元素

一种酸碱指示剂测定水样pH值范围的方法应用

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广船科技 2024年第1期44卷 79-81页

作者：饶婷瑛柴文畅徐晓萍广船国际质量管理部

文章主要阐述酸碱指示剂法测定水样pH值范围的实际应用,主要研究实验室现有的几种常用酸碱指示剂和混合指示剂,通过多次试验验证,根据测定时水样的颜色变化来判断样品pH值的范围,通过仪器法比对,确定酸碱指示剂法快速测定水样pH值范围... 详细信息

文章主要阐述酸碱指示剂法测定水样pH值范围的实际应用,主要研究实验室现有的几种常用酸碱指示剂和混合指示剂,通过多次试验验证,根据测定时水样的颜色变化来判断样品pH值的范围,通过仪器法比对,确定酸碱指示剂法快速测定水样pH值范围的可行性。

关键词：酸碱指示剂混合指示剂 pH值范围仪器法

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不同类型硅烷偶联剂在全钢子午线轮胎上三角胶中的应用

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橡胶科技 2024年第5期22卷 263-266页

作者：赵之朋胥连涛徐霄平布乃豪山东阳谷华泰化工股份有限公司山东阳谷252300 国家橡胶助剂工程技术研究中心山东阳谷252300

研究不同类型硅烷偶联剂在全钢子午线轮胎上三角胶中的应用。结果表明:与硅烷偶联剂Si69和Si75相比,封端巯基硅烷偶联剂A-02对白炭黑的改性效果更好,改善了白炭黑在橡胶基体中的分散性,可明显提高白炭黑填充三角胶胶料的加工性能;加入... 详细信息

研究不同类型硅烷偶联剂在全钢子午线轮胎上三角胶中的应用。结果表明:与硅烷偶联剂Si69和Si75相比,封端巯基硅烷偶联剂A-02对白炭黑的改性效果更好,改善了白炭黑在橡胶基体中的分散性,可明显提高白炭黑填充三角胶胶料的加工性能;加入封端巯基硅烷偶联剂A-02的三角胶胶料的硬度、100%定伸应力和拉伸强度最大,DIN磨耗量和压缩疲劳温升最小,综合性能佳。

关键词：硅烷偶联剂子午线轮胎上三角胶白炭黑

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Surface-Enhanced Third-Order Nonlinear Optical Response of C_(60) Films on Roughed Gla Plate

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Chinese Physics Letters 1993年第10期10卷 598-600页

作者： LI Shiji xu xiaoping LI Wenzhu QIU Peihua WANG Wenyao Department of Optics and Electronics Zhejiang UniversityHangzhou 310027 The Center of Laboratory Zhejiang UniversityHangzhou 310027 Department of Physics Zhejiang UniversityHangzhou 310027 Shanghai Institute of Optics and Fine Mechanics Academia SinicaShanghai 201800

The nonlineat third order optical susceptibility of C_(60) films on roughed glass plate has been studied by using a inode locked Nd:YAG laser emitting 8ps pulsed at 1.064 μm of 0.3 J *** large|χ^(3)(-3ω,ω,ω,ω)|=2 ×10^(-8) esu for C_(60) films of 15μm thickness has been observed,which is 1O^(3) larger than the value in the bulk C_(60).This is due to surface enhanced effect.

关键词： Nd:YAG Films Rough

A New X-band Weather Radar System with Distributed Phased-Array Front-ends: Development and Preliminary Observation Results

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Advances in Atmospheric Sciences 2022年第3期39卷 386-402页

作者： Xiaoqiong ZHEN Shuqing MA Hongbin CHEN Guorong WANG xiaoping xu Siteng LI Meteorological Observation Center of China Meteorological Administration Beijing 100081China College of Electronic Engineering Chengdu University of Information TechnologyChengdu 610225China Institute of Atmospheric Physics China Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences(CEPS) University of Chinese Academy of Sciences(UCAS)Beijing 100049China Eastone Washon Science and Technology Ltd. Changsha 410000China Institute of Urban Meteorology China Meteorological AdministrationBeijing 100089China

A novel weather radar system with distributed phased-array front-ends was developed. The specifications and preliminary data synthesis of this system are presented, which comprises one back-end and three or more front-ends. Each front-end, which utilizes a phased-array digital beamforming technology, sequentially transmits four 22.5°-width beams to cover the 0°–90° elevational scan within about 0.05 s. The azimuthal detection is completed by one mechanical scan of0°–360° azimuths within about 12 s volume-scan update time. In the case of three front-ends, they are deployed according to an acute triangle to form a fine detection area(FDA). Because of the triangular deployment of multiple phased-array front-ends and a unique synchronized azimuthal scanning(SAS) rule, this new radar system is named Array Weather Radar(AWR). The back-end controls the front-ends to scan strictly in accordance with the SAS rule that assures the data time differences(DTD) among the three front-ends are less than 2 s for the same detection point in the FDA. The SAS can maintain DTD < 2 s for an expanded seven-front-end AWR. With the smallest DTD, gridded wind fields are derived from AWR data, by sampling of the interpolated grid, onto a rectangular grid of 100 m ×100 m ×100 m at a 12 s temporal resolution in the FDA. The first X-band single-polarized three-front-end AWR was deployed in field experiments in 2018 at Huanghua International Airport, China. Having completed the data synthesis and processing, the preliminary observation results of the first AWR are described herein.

关键词： phased-array weather radar multiple radar front-ends synchronized azimuthal scanning(SAS) data time differences(DTD) wind fields

Weighted Sensitivity Minimization with a Stable Controller

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Journal of Mathematical Research with Applications 2014年第6期34卷 736-742页

作者： xiaoping xu Yufeng LU School of Mathematical Sciences Ocean University of China School of Mathematical Sciences Dalian University of Technology

In this paper, we mainly consider weighted sensitivity minimization by a stable controller for linear time-invariant and time-varying systems. The problem is reduced to a distance problem from an operator to the nest ... 详细信息

关键词： nest algebra weighted sensitivity minimization strong stabilization

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高频脉冲大电流深熔MAG焊接工艺研究

金属加工（热加工） 2024年第8期 66-72页

作者：张猛陈庆城徐晓萍冯文虎广船国际有限公司广东广州511462

将高频脉冲大电流深熔MAG焊接工艺应用在船舶中厚板角接坡口,实现坡口背面不清根全焊透焊接。针对V形与K形坡口的横焊、平焊位置采用不同的焊接技术条件,分析大电流深熔MAG焊的熔透性及力学性能。通过研究可知:高频脉冲大电流双面深熔MA... 详细信息

将高频脉冲大电流深熔MAG焊接工艺应用在船舶中厚板角接坡口,实现坡口背面不清根全焊透焊接。针对V形与K形坡口的横焊、平焊位置采用不同的焊接技术条件,分析大电流深熔MAG焊的熔透性及力学性能。通过研究可知:高频脉冲大电流双面深熔MAG焊接技术及V形坡口横焊位置大电流单面焊双面成形技术,焊缝成形良好,超声波检测、宏观金相、冲击性能及硬度均满足船级社的规范要求,可减少焊缝根部的碳弧气刨及打磨量,降低人工成本,提高施工进度,避免焊缝金属的多次加热,提升焊缝接头的可靠性。单面焊双面成形技术应用在V形坡口平焊及K形坡口平焊、横焊均难以实现焊缝成形;坡口背面粘贴陶瓷衬垫时,焊缝中心易出现应力集中现象,产生焊接裂纹。

关键词：大电流 MAG焊深熔焊