检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

人才法制建设的现状分析与对策建议

中国人事科学 2018年第4期 50-56页

作者：袁娟南连伟陈璐维中国人事科学研究院法制与绩效研究室人社部规划财务司中国政法大学

我国现阶段人才法制建设的关键在于人才立法,而人才立法尚存在立法体系不够健全、立法主体责任不清、立法层次较低、立法质量有待提升、法规修订不够及时等方面的问题。完善人才立法,需加强人才法制建设的理论研究,启动国家层面的人才... 详细信息

我国现阶段人才法制建设的关键在于人才立法,而人才立法尚存在立法体系不够健全、立法主体责任不清、立法层次较低、立法质量有待提升、法规修订不够及时等方面的问题。完善人才立法,需加强人才法制建设的理论研究,启动国家层面的人才开发立法,鼓励开展地方人才立法,并及时开展现行法律法规的清理和修订工作。

关键词：人才法制建设人才立法

在线全文

学校读者我要写书评

暂无评论

两车辆同向行驶时小角度碰撞的模拟研究

农业装备与车辆工程 2022年第5期60卷 1-5页

作者：陈鲁伟郭世永李宇吉青岛理工大学机械与汽车工程学院山东省青岛市266520

在两辆车同向行驶时的小角度碰撞工况中,模拟研究了车辆的损伤随两车碰撞角度的变化趋势。采用控制变量法,即保持车辆碰撞时速度不变(70 km/h),改变两车的碰撞角度。首先运用Hyper Mesh对SUV汽车模型进行网格划分以及刚性墙创建,之后运... 详细信息

在两辆车同向行驶时的小角度碰撞工况中,模拟研究了车辆的损伤随两车碰撞角度的变化趋势。采用控制变量法,即保持车辆碰撞时速度不变(70 km/h),改变两车的碰撞角度。首先运用Hyper Mesh对SUV汽车模型进行网格划分以及刚性墙创建,之后运用LS_DYNA对创建好的模型进行仿真计算,最后再由Hyper View、Hyper Grash或者LS_DYNA进行数据分析并得出结论。结果表明:碰撞车辆前端受损明显,但是随着碰撞角度的变小损伤不断减轻;碰撞车辆在发生碰撞的过程中能量转化不充分,保留了相当可观的动能,极易受到二次碰撞的损害。

关键词：仿真模拟小角度碰撞控制变量刚性墙碰撞角度

纳滤膜工艺处理水中Fe^(2+)、Fe^(3+)和Mn^(2+)的效能研究

在线全文

学校读者我要写书评

暂无评论

供水技术 2016年第6期10卷 6-9页

作者：陈丽珠申露威钟惠舟东莞市东江水务有限公司广东东莞523116

研究了纳滤膜工艺对水中Fe^(2+)、Fe^(3+)和Mn^(2+)的截留性能和影响因素。重点考察了运行时间、操作压力、溶液浓度和p H对截留率的影响。结果表明,纳滤工艺能有效去除水中的铁锰离子,运行20 min以后出水铁锰离子浓度基本没有变化;随... 详细信息

研究了纳滤膜工艺对水中Fe^(2+)、Fe^(3+)和Mn^(2+)的截留性能和影响因素。重点考察了运行时间、操作压力、溶液浓度和p H对截留率的影响。结果表明,纳滤工艺能有效去除水中的铁锰离子,运行20 min以后出水铁锰离子浓度基本没有变化;随着压力的增大,Fe^(3+)的截留率基本保持不变,截留率高达100%;Fe^(2+)和Mn^(2+)截留率随压力升高而降低,最后趋于稳定;随着进水浓度的升高,Mn^(2+)的截留率逐渐下降,Fe^(2+)表现出先升后降,随后趋于稳定的变化趋势;溶液p H对Fe^(2+)、Mn^(2+)金属离子的截留率影响较大,当p H=5时,Fe^(2+)的截留率最低,当p H=6时,Mn^(2+)的截留率最低;纳滤工艺对Fe^(3+)的去除效果显著,溶液浓度、操作压力和p H不会对Fe^(3+)的截留率造成显著影响。

关键词：纳滤铁锰截留率操作压力

铁路隧道施工人员与安全风险节点映射关系模型设计及应用

在线全文

学校读者我要写书评

暂无评论

铁道科学与工程学报 2024年第5期21卷 2036-2047页

作者：蔡茜黄健陵唐晓莹赵露薇蔡超勋陈辉华中南大学土木工程学院湖南长沙410075 中国铁道科学研究院集团有限公司北京100081

施工人员既是铁路隧道施工安全风险发生的主要因素之一,也是受害者,然而“施工人员”与“安全风险”的关系研究尚未得到有效关注。通过引入网络理论,基于OBS(Organization Breakdown Structure)-WBS(Work Breakdown Structure)-RBS(Risk... 详细信息

施工人员既是铁路隧道施工安全风险发生的主要因素之一,也是受害者,然而“施工人员”与“安全风险”的关系研究尚未得到有效关注。通过引入网络理论,基于OBS(Organization Breakdown Structure)-WBS(Work Breakdown Structure)-RBS(Risk Breakdown Structure)法和2-模网络进行施工人员与安全风险节点映射关系模型设计,用于显性化施工人员和安全风险因素节点映射关系,为研究和预防铁路隧道施工安全风险提供新思路和新工具。首先运用WBS-RBS法识别铁路隧道施工安全风险因素并构建2-模WBS-RBS矩阵,运用OBS-WBS法确定铁路隧道施工人员集并构建2-模OBS-WBS矩阵;以WBS中施工活动为链接,将2-模OBS-WBS矩阵和2-模WBS-RBS矩阵转换为2-模OBS-RBS矩阵;接着,将施工人员和安全风险因素分别作为节点,将2-模OBS-RBS矩阵中反映的双方之间的映射关系作为边,构建施工人员与风险因素节点映射关系网络;最后,采取典型对应分析,显性化施工人员与风险因素的关联程度,旨在探索处于网络核心位置的施工人员、安全风险因素及其双方映射关系;以怀邵衡铁路盛德堂隧道作为典型案例,应用该模型对施工人员和安全风险因素节点的映射关系进行分析。研究结果表明:不同施工人员与特定安全风险因素具有明显映射关系;经专家验证指出,基于上述映射关系模型实证结果符合现场工程实际,构建的模型具备实用性。研究结果可直观呈现各级施工人员与安全风险因素的主要关联关系,帮助施工人员提高安全认知,端正安全态度;也可帮助施工管理人员针对不同施工人员提出针对性风险管控建议,合理优化安全风险管理资源,为预防铁路隧道施工安全风险提供方向性指导。

关键词：铁路隧道施工人员施工安全风险节点映射关系 2-模网络

在线全文

学校读者我要写书评

暂无评论

一例慢性重度正己烷中毒的调查报告

职业与健康 2006年第3期22卷 202-202页

作者：陈鹭伟福建省厦门市卫生监督所 361003

正己烷是石油分馏与天然气分离过程中得到的六碳化合物,常态下为液体,主要用做溶剂.广泛应用在工业粘胶配制、制鞋、制球、印刷、家具制造及电器制造等领域.正己烷经呼吸道及皮肤进入人体,其代谢产物2,5己二酮具有周围神经毒性,可引起... 详细信息

正己烷是石油分馏与天然气分离过程中得到的六碳化合物,常态下为液体,主要用做溶剂.广泛应用在工业粘胶配制、制鞋、制球、印刷、家具制造及电器制造等领域.正己烷经呼吸道及皮肤进入人体,其代谢产物2,5己二酮具有周围神经毒性,可引起以感觉运动型多发性周围神经病为主要临床表现的慢性中毒.

关键词：慢性重度正己烷中毒

Two－Phase　Critical　Discharge　of　Initially　Saturated　or　Subcooled　Water　Flowing　in　Sharp－Edged　Tubes　at　High　Pressure

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 1995年第3期4卷 193-199页

作者： Jinliang Xu Tingkuan chen luwei Yang Institue of Nuclear Energy Technology Tsinghua University Beijing China National Lab. on Multiphase Flow Xi’an Jiaotong University China

The transient critical flow experiment with sharp-edged tubes as the break geometries is conducted in high pressure convective circulation test loop of Xi'an Jiaotong University. The initial steady operation pressure is up to ***. An empirical correlation was made to obtain the critical mass flow rates, the critical pressure ratio and the thermal nonequilibrium number were correlated as the functions of the tube length to tube diameter ratio L/D. The predicted critical mass now rate gets a higher accuracy for short tubes with L/D 12.

关键词： critical flow thermal nonequilibrium sharp-edged tubes.

Low-power STED nanoscopy based on temporal and spatial modulation

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第4期15卷 3479-3486页

作者： luwei Wang Yue chen Yong Guo Weixin Xie Zhigang Yang Xiaoyu Weng Wei Yan JunleQu Center for Biomedical Photonics&College of Physics and Optoelectronic Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen 518060China College of Electronics and Information Engineering Shenzhen UniversityShenzhen 518060China

Stimulated emission depletion(STED)nanoscopy enables the visualization of subcellular organelles in unprecedented ***,reducing the power dependency remains one of the greatest challenges for STED imaging in living ***,we propose a new method,called modulated STED,to reduce the demand for depletion power in STED imaging by modulating the information from the temporal and spatial *** this approach,an excitation pulse is followed by a depletion pulse with a longer delay;therefore,the fluorescence decay curve contains both confocal and STED photons in a laser pulse *** time-resolved detection,we can remove residual diffraction-limited signals pixel by pixel from STED photons by taking the weighted difference of the depleted ***,fluorescence emission in the periphery of an excitation spot is further inhibited through spatial modulation of fluorescent signals,which replaced the increase of the depletion power in conventional *** demonstrate that the modulated STED method can achieve a resolution of<100 nm in both fixed and living cells with a depletion power that is dozens of times lower than that of conventional STED,therefore,it is very suitable for long-term superresolution imaging of living ***,the idea of the method could open up a new avenue to the implementation of other experiments,such as light-sheet imaging,multicolor and three-demensional(3D)super-resolution imaging.

关键词： fluorescence microscopy super-resolution imaging stimulated emission depletion fluorescence lifetime signal modulation

Effect of Huqian Wan on liver-Yin and kidney-Yin deficiency patterns in patients with knee osteoarthritis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2015年第4期35卷 417-421页

作者： chen Qiqing Jin Hongting He Bin Wang Liang Xiao luwei Tong Peijian the First Clinical Medical College Zhejiang Chinese Medical University Department of Orthopaedic Surgery Gansu Provincial Hospital of TCM Institute of Orthopaedics and Traumatology of Zhejiang Province Zhejiang Chinese Medical University Department of Orthopaedic Surgery the First Affiliated Hospital of Zhejiang Chinese Medical University

OBJECTIVE: To observe the curative effect of Huqian Wan on liver and kidney-Yin deficiency knee osteoarthritis(KOA).METHODS: One hundred patients were randomly divided into a treatment(50 patients) and control group(50 patients). In the treatment group, patients orally took the Chinese medicine Huqian Wan. Control group patients orally took Votalin, 75 mg, once a day, for 8 weeks. The visual analog scale(VAS), Western Ontario and Mc Master University Osteoarthritis Index(WOMAC), and Medical Outcomes Study Short Form 36-Item Health Survey(SF36) were used to evaluate the curative effect before treatment and after 8 and 16 weeks of ***: VAS and WOMAC scores significantly decreased and SF 36 scores significantly increased after treatment in both groups compared with before treatment(P 0.05).CONCLUSION: Huqian Wan could effectively improve the clinical symptoms and quality of life in patients with KOA. It could also have a better and longer lasting curative effect without obvious adverse events compared with Votalin.

关键词： Osteoarthritis Knee Liver kidney Yin deficiency Treatment outcome Huqian Wan

Stimulated emission-depletion-based point-scanning structured illumination microscopy

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2024年第3期22卷 95-100页

作者：汪磊王美婷王璐玮郑晓敏陈嘉杰吴文帅严伟于斌屈军乐高志邵永红 Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging National-Regional Key Technology Engineering Laboratory for Medical UltrasoundSchool of Biomedical EngineeringShenzhen University Medical SchoolShenzhen 518060China Key Laboratory of Opto-electronic Information Science and Technology of Jiangxi Province Nanchang Hangkong UniversityNanchang 330063China College of Physics and Optoelectronics Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen UniversityShenzhen 518060China Department of Bioengineering and COMSET Clemson UniversityClemson SC 29634US

Wide-field linear structured illumination microscopy(LSIM)extends resolution beyond the diffraction limit by moving unresolvable high-frequency information into the passband of the microscopy in the form of moiré***,due to the diffraction limit,the spatial frequency of the structured illumination pattern cannot be larger than the microscopy cutoff frequency,which results in a twofold resolution improvement over wide-field *** Letter presents a novel approach in point-scanning LSIM,aimed at achieving higher-resolution improvement by combining stimulated emission depletion(STED)with point-scanning structured illumination microscopy(ps SIM)(STED-ps SIM).The according structured illumination pattern whose frequency exceeds the microscopy cutoff frequency is produced by scanning the focus of the sinusoidally modulated excitation beam of STED *** experimental results showed a 1.58-fold resolution improvement over conventional STED microscopy with the same depletion laser power.

关键词： stimulated emission depletion structured illumination microscopy superresolution microscopy