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现有水电计价体系下抽水蓄能工程量清单常见问题探讨

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价值工程 2025年第2期44卷 148-151页

作者：蒋茂庆唐凯聂锦杰李宁谈昌晗新疆哈密抽水蓄能有限公司哈密839000 中国电建集团华东勘测设计研究院有限公司杭州311100

本文基于抽水蓄能电站工程大发展背景下,运用问卷调查与对比分析相结合的方法,分析现有水电计价体系下抽水蓄能工程量清单常见的问题,如项目名称不统一、计量单位不一致、项目特征描述不清晰、清单出项深度不一致等,并提出如何解决此上... 详细信息

本文基于抽水蓄能电站工程大发展背景下,运用问卷调查与对比分析相结合的方法,分析现有水电计价体系下抽水蓄能工程量清单常见的问题,如项目名称不统一、计量单位不一致、项目特征描述不清晰、清单出项深度不一致等,并提出如何解决此上问题,给出分析意见,最终为抽蓄工程量清单范本编制提供参考依据。

关键词：抽水蓄能工程量清单常见问题范本编制

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全纯截面曲率与Kahler-like度量

中国科学：数学 2021年第12期51卷 2013-2024页

作者：汤凯浙江师范大学数学与计算机科学学院金华321004

本文研究具有给定全纯截面曲率条件的Kahler-like流形.首先,证明具有非零常值全纯截面曲率的Kahler-like流形一定是Kahler流形;其次,证明关于Hermite曲率流的抛物Schwarz引理;最后,给出具有正全纯截面曲率的紧致Kahler-like流形上的消... 详细信息

本文研究具有给定全纯截面曲率条件的Kahler-like流形.首先,证明具有非零常值全纯截面曲率的Kahler-like流形一定是Kahler流形;其次,证明关于Hermite曲率流的抛物Schwarz引理;最后,给出具有正全纯截面曲率的紧致Kahler-like流形上的消没定理.

关键词：全纯截面曲率 Kahler-like度量 Hermite流形

Hermite流形上的第一或第二k-Ricci曲率

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中国科学：数学 2022年第8期52卷 901-912页

作者：汤凯浙江师范大学数学与计算机科学学院金华321004

本文研究具有非正或非负的第一和第二k-Ricci曲率的基本性质.首先获得它们与Ricci曲率及全纯截面曲率之间的不等式,然后给出具有正第一或第二k-Ricci曲率的紧致Hermite流形上的消没定理.特别地,本文证明,如果紧致K¨ahler流形上具有正... 详细信息

本文研究具有非正或非负的第一和第二k-Ricci曲率的基本性质.首先获得它们与Ricci曲率及全纯截面曲率之间的不等式,然后给出具有正第一或第二k-Ricci曲率的紧致Hermite流形上的消没定理.特别地,本文证明,如果紧致K¨ahler流形上具有正的第二k-Ricci曲率(k2)的Hermite度量,则它一定是射影流形.

关键词：第一k-Ricci曲率第二k-Ricci曲率 Hermite流形

Efficacy and economic analysis of Ex- PRESS implantation versus trabeculectomy in uncontrolled glaucoma： a systematic review and Meta-analysis

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International Journal of Ophthalmology(English edition) 2016年第1期9卷 124-131页

作者： Ling Wang Fang Sha Da-Dong Guo Hong-Sheng Bi Jun-Kang Si Yu-Xiang Du kai tang Shandong University of Traditional Chinese Medicine Jinan 250002 Shandong Province China Jining Medical University Jining 272000 Shandong Province China Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine Jinan 250002 ShandongProvince China Eye Institute of Shandong University of Traditional Chinese Medicine Jinan 250002 Shandong Province China

AIM：To systematically review the current evidence based on the efficacy and cost of Ex-PRESS implantation and trabeculectomy（Trab）for uncontrolled glaucoma.·METHODS：Clinical trials were identified by electronic databases（Pub Med,EMBASE,ISI Web of science and Cochrane library）,and data,such as intraocular pressure（IOP）,the complete and qualified success rate,the postoperative complications and the cost,were exacted from these relevant *** mean difference（WMD）,odds ratio（OR）and 95%confidence intervals（CIs）were calculated and were pooled using a randomeffects model.·RESULTS：Eleven relevant publications and two abstracts met the inclusion *** efficacy of ExPRESS was similar to that of Trab in the percentage of IOP reduction（IOPR%）at 1,2y（WMD：-2.01;95%CI：-7.92-3.90;=0.50 and WMD：2.89;95%CI：-8.05-13.83;=0.60,respectively）.Ex-PRESS possessed a significant higher complete and qualified success rate（OR：1.59;95%CI：1.07-2.35;=0.02 and OR：1.74;95%CI：1.06-2.86;=0.03,respectively）.Moreover,Ex-PRESS exerted a significantly lower frequency of hypotony and hyphema than Trab（OR：0.39;95%CI：0.21-0.72;=0.003 and OR：0.27;95%CI：0.10-0.69;=0.003,respectively）.However,there was no consistent result on the cost between the two groups according to the previous three studies.·C ONCLUSION：Both Trab and Ex-PRESS have equivalent efficacy in lowering IOP,yet Ex-PRESS had a lower risk of hypotony and hyphema than ***,whether the cost of Ex-PRESS was less than that of Trab should be further investigated to ensure evidence-based conclusion in the long run.

关键词： Ex-PRESS implantation trabeculectomy uncontrolled glaucoma systematic review Meta-analysis

基于移动警务平台的图像采集与研判系统研究与实现

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天津法学 2020年第4期36卷 107-109页

作者：唐锴于涛天津市滨海新区公安局科技信息化支队天津300450

公安图侦民警在办案中需要对案件涉及的视频图像进行提取,以往的工作中通常由民警借助于视频提取工具和电脑、U盘拷贝等方式提取视频文件,回到单位再进行比对研判,这种处理方式操作耗时容易贻误战机,且存在安全隐患。为解决以上问题,本... 详细信息

公安图侦民警在办案中需要对案件涉及的视频图像进行提取,以往的工作中通常由民警借助于视频提取工具和电脑、U盘拷贝等方式提取视频文件,回到单位再进行比对研判,这种处理方式操作耗时容易贻误战机,且存在安全隐患。为解决以上问题,本文提出一种基于移动警务平台的图像采集与研判系统。民警通过使用移动警务专用手机可以直接下载和截取视频图像数据,实时上传到移动警务平台,进入公安信息网视频研判平台进行研判比对,然后再将研判结果即刻返回到民警警务通手机。该系统实现了在公安实战中利用移动警务终端对视频监控图像文件下载、上传、安全传输,图像研判结果实时推送,既安全可靠又能提高办案效率。

关键词：移动警务图像采集图像研判安全

Microbial sulfurization stimulates carbon sequestration in marine oxygen minimum zones

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Science Bulletin 2022年第9期67卷 895-898,M0003页

作者： Quanrui Chen kai tang Xiaofeng Chen Nianzhi Jiao State Key Laboratory of Marine Environmental Science College of Ocean and Earth SciencesXiamen UniversityXiamen 361005China Basic Science Center on Marine Carbon Sequestration and Biogeochemistry Xiamen UniversityXiamen 361005China

The organosulfur cycle gradually changed with the history of oxygen on Earth,and it affected the evolution of living *** one of the most ancient pathways,assimilatory sulfate reduction for sulfur amino acid synthesis could have provided up to 75% of the reduced sulfur needed for life processes in the paleoseawater environment,which was characterized by very low sulfate *** reduction of sulfate to hydrogen sulfide appeared to prevail globally until the start of ocean oxygenation around 2.7 billion years ago[1],supporting a substantial portion of sedimentary sulfur pools and associated carbon mineralization.

关键词： sulfur globally 硫化作用

Numerical study on onset of oscillatory thermocapillary flow in rectangular liquid pool

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Science China(Technological Sciences) 2010年第4期53卷 1069-1076页

作者： HU WenRui,tang ZeMei & LI kai Key Laboratory of Microgravity(National Microgravity Laboratory),Institute of Mechanics,Chinese Academy of Sciences,Beijing10090,China 1. Key Laboratory of Microgravity (National Microgravity Laboratory) Institute of Mechanics Chinese Academy of Sciences Beijing 10090 China

Thermocapillary flow in a rectangular liquid pool of large Prandtl fluid(Pr=105.6) is numerically studied in *** thermocapillary flow arises when the imposed temperature difference between the sidewalls exceeds a critical *** fluctuations of the oscillatory flow,accompanied by the propagation of the hydrothermal wave from the cold sidewall to the hot one,are much smaller than the time-averaged velocity and temperature *** corresponding disturbance cells arise in the centre of the liquid pool initially,and extend to the whole region with the increasing imposed temperature *** present study reveals the different characteristics of the oscillatory themocapillary flow in the rectangular liquid pool as compared to the cases in other configurations.

关键词： hydrothermal wave bifurcation numerical simulation microgravity

Period-doubling bifurcations of the thermocapillary convection in a floating half zone

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Science China(Physics,Mechanics & Astronomy) 2010年第9期53卷 1681-1686页

作者： AA Yan,LI kai,tang ZeMei,CAO ZhongHua & HU WenRui National Microgravity Laboratory,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China 1. National Microgravity Laboratory Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China

This study experimentally explored the fine structures of the successive period-doubling bifurcations of the time-dependent thermocapillary convection in a floating half zone of 10 cSt silicone oil with the diameter d0=3.00 mm and the aspect ratio A=l/d0=0.72 in terrestrial *** onset of time-dependent thermocapillary convection predominated in this experimental configuration and its subsequent evolution were experimentally detected through the local temperature *** experimental results revealed a sequence of period-doubling bifurcations of the time-dependent thermocapillary convection,similar in some way to one of the routes to chaos for buoyant natural *** critical frequencies and the corresponding fractal frequencies were extracted through the real-time analysis of the frequency spectra by Fast-Fourier-Transfor-mation(FFT).The projections of the trajectory onto the reconstructed phase-space were also ***,the experimentally predicted Feigenbaum constants were quite close to the theoretical asymptotic value of 4.669 [Feigenbaum M *** Lett A,1979,74:375-378].

关键词： thermocapillary convection bifurcation transition to turbulence

Discovery of TK-642 as a highly potent,selective,orally bioavailable pyrazolopyrazine-based allosteric SHP2 inhibitor

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Acta Pharmaceutica Sinica B 2024年第8期14卷 3624-3642页

作者： kai tang Shu Wang Siqi Feng Xinyu Yang Yueyang Guo Xiangli Ren Linyue Bai Bin Yu Hong-Min Liu Yihui Song School of Pharmaceutical Sciences&Key Laboratory of Advanced Drug Preparation Technologies Ministry of EducationZhengzhou UniversityZhengzhou 450001China College of Chemistry Pingyuan LaboratoryState Key Laboratory of Antiviral DrugsZhengzhou UniversityZhengzhou 450001China Tianjian Laboratory of Advanced Biomedical Sciences Institute of Advanced Biomedical SciencesZhengzhou UniversityZhengzhou 450000China State Key Laboratory of Pharmaceutical Biotechnology Nanjing UniversityNanjing 210023China

Src homology-2-containing protein tyrosine phosphatase 2(SHP2)is a promising therapeutic target for cancer *** this work,we presented the structure-guided design of 5,6-fused bicyclic allosteric SHP2 inhibitors,leading to the identification of pyrazolopyrazine-based TK-642 as a highly potent,selective,orally bioavailable allosteric SHP2 inhibitor(SHP2WT IC_(50)=2.7 nmol/L)with favorable pharmacokinetic profiles(F=42.5%;t_(1/2)=2.47 h).Both dual inhibition biochemical assay and docking analysis indicated that TK-642 likely bound to the“tunnel”allosteric site of ***-642 could effectively suppress cell proliferation(KYSE-520 cells IC_(50)=5.73μmol/L)and induce apoptosis in esophageal cancer cells by targeting the SHP2-mediated AKT and ERK signaling ***,oral administration of TK-642 also demonstrated effective anti-tumor effects in the KYSE-520 xenograft mouse model,with a T/C value of 83.69%.Collectively,TK-642 may warrant further investigation as a promising lead compound for the treatment of esophageal cancer.

关键词： Protein tyrosine phosphatase Pyrazolopyrazine SHP2 inhibitor Esophageal cancer