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连续油管受力分析方法在水平井作业中的应用

天然气工业 2002年第4期22卷 59-60页

作者：周崇志王玲陈澈四川石油管理局井下作业处

连续油管作业简单省时、安全可靠、节约成本 ,在水平井作业中具有其他设备不可替代的优点。但由于连续油管与钻具、常规油管相比的轻、柔属性使其在井下受力特别复杂。文章通过介绍连续油管受力分析方法 ,用于分析井下受力 ,也可预测大... 详细信息

连续油管作业简单省时、安全可靠、节约成本 ,在水平井作业中具有其他设备不可替代的优点。但由于连续油管与钻具、常规油管相比的轻、柔属性使其在井下受力特别复杂。文章通过介绍连续油管受力分析方法 ,用于分析井下受力 ,也可预测大斜度井中连续油管的动作。

关键词：连续油管受力分析方法水平井作业应用油气田

In vivo and in vitro Studies on the Antitumor Activities of MCP (Malva crispa L. Powder)

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Biomedical and Environmental Sciences 1998年第4期11卷 297-306页

作者： HUANG che.G-YU ZENG ling-FU HE TAO WANG CHAO-JUN HONG JUN-RONG ZHANG XIU-QUAN HOU YUN-HUA AND PENG SHU-SHENG (Department of Nutrition and Food Hygiene, School of Public Health) (Tumor Institute, West China University of Medical Sciences (WCUMS), che Dept. of Nutrition and Food Hygiene School of Public Health W. China Univ. of Medical Sciences Chengdu 610041 China Tumor Institute W. China Univ. of Medical Sciences Chengdu 610041 China

Four short-term in vivo and in vitro tests were used to further confirm the antitumor activities of MCP, a vegetable powder, prepared from Malru crispo L. (i) In the H22 hepatoma-transplanting test, MCP had antitumor action, but MCP residue did not show such action; 5-FU appeared to have more potent antitumor activities and more harmful effects than MCP. (ii) In the micronucleus (MN) test, MCP significantly decreased MN frequency. (iii) In the cancer cell culture systems, the MCP fat-soluble extract revealed inhibitory effects on the growth and proliferation of the human hepatoma and the gastric cancer cells in a dose-response manner. (iv) In the colony formation test, MCP also altered the morphology of human gastric cancer cells. It was suggested that MCP could be consumed not only by healthy subJects for cancer prevention but also by patients with cancer as supplernentary treatrnent in combination with anticarcinogenic drug such as 5-FU, cyclophosphamide (CP)

关键词： MCP Malva crispa L Powder

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用自由移动的刚性球杆校准多摄像机内外参数

光学精密工程 2009年第8期17卷 1942-1952页

作者：张灵飞陈刚叶东车仁生哈尔滨工业大学自动化测试与控制系黑龙江哈尔滨150001

针对用于大空间运动分析的运动参数光电探测系统中多台高速摄像机的内外参数校准需求,制作了一种两端及中间各安装一个红外反光标志球且两端球距为已知(精确校准)的刚性球杆。将这种特制的刚性球杆在测量空间内多次随意移动,并用多台前... 详细信息

针对用于大空间运动分析的运动参数光电探测系统中多台高速摄像机的内外参数校准需求,制作了一种两端及中间各安装一个红外反光标志球且两端球距为已知(精确校准)的刚性球杆。将这种特制的刚性球杆在测量空间内多次随意移动,并用多台前端装有红外发光板和滤光片的高速摄像机摄取其图像,即可实现焦距不同的多台摄像机的内外参数校准。假定主点位于像面中心附近的某个位置,通过Hartley改进8点法求出基本矩阵,利用极点和外极线约束线性地求出各台摄像机的焦距。接着,求出本质矩阵,对其进行奇异值分解后得到旋转矩阵和比例因子意义下的平移向量。利用三角法确定刚性球杆两端点的重建坐标和距离,与标准距离对比确定比例因子。最后,通过评价函数将摄像机校准转换成寻找摄像机最佳主点配对的非线性最小化问题,运用改进的模拟退火进化策略迭代求解出最佳主点配对,继而求解出摄像机的其它内外参数。标定实验表明,焦距和主点求解精度达到了0.1pixel。对比测量实验表明,对长为750.607mm的刚性杆进行长度测量,标准差达到了0.046mm。与传统方法相比,本方法扩展到了多台摄像机应用场合并允许摄像机焦距各不相同,不需要对球杆的运动做任何限制,能够同时求解出摄像机内外参数,而改进的模拟退火进化策略改善了算法收敛速度和全局收敛性能。

关键词：摄像机校准球杆自由运动模拟退火进化策略

Microwave-assisted hydrothermal synthesis of cube-like Ag-Ag_2MoO_4 with visible-light photocatalytic activity

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Science China che.istry 2013年第4期56卷 443-450页

作者： LI ZhaoQian che. XueTai XUE Zi-ling State Key Laboratory of Coordination che.istry Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering Nanjing University Department of che.istry The University of Tennessee Knoxville

Cube-like Ag-Ag2MoO4 composite has been successfully prepared in the presence of PVP （potyvinylpyrrolidone） via a facile microwave-assisted hydrothermal process. Studies of its photocatalytic performance in the decomposition of RhB indicate that the cube-like Ag-Ag2MoO4 composite exhibits good catalytic activities under visible-light irradiation. The face that Ag pro- motes the absorption of visible light may be attributed to the surface plasmon resonance. Further XRD characterization after recycle photocatalytic tests confirms that partial Ag~ ions in Ag2MoO4 have been reduced to metallic Ag. Reaction temperature, reaction time and the amount of PVP have also been studied and found to play crucial roles in the formation of the cube-like microstructures.

关键词： microwave hydrothermal photocatalytic activity surface plasmon resonance

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Phenomic Imaging

Phenomics 2023年第6期3卷 597-612页

作者： Lizhen Lan Kai Feng Yudan Wu Wenbo Zhang ling Wei Huiting che.Le Xue Yidan Gao Ji Tao Shufang Qian Wenzhao Cao Jun Zhang che.gyan Wang Mei Tian Human Phenome Institute Fudan University825 Zhangheng RoadPudong New DistrictShanghai 201203China Department of Nuclear Medicine and PET Center The Second Afliated Hospital of Zhejiang University School of MedicineHangzhou 310009ZhejiangChina Department of Radiology Huashan HospitalState Key Laboratory of Medical NeurobiologyNational Center for Neurological DisordersFudan UniversityShanghai 200040China

Human phenomics is defned as the comprehensive collection of observable phenotypes and characteristics infuenced by a complex interplay among factors at multiple *** factors include genes,epigenetics at the microscopic level,organs,microbiome at the mesoscopic level,and diet and environmental exposures at the macroscopic level.“Phenomic imaging”utilizes various imaging techniques to visualize and measure anatomical structures,biological functions,metabolic processes,and bioche.ical activities across diferent scales,both in vivo and ex *** conventional medical imaging focused on disease diagnosis,phenomic imaging captures both normal and abnormal traits,facilitating detailed correlations between macro-and *** approach plays a crucial role in deciphering *** review provides an overview of diferent phenomic imaging modalities and their applications in human ***,it explores the associations between phenomic imaging and other omics disciplines,including genomics,transcriptomics,proteomics,immunomics,and *** integrating phenomic imaging with other omics data,such as genomics and metabolomics,a comprehensive understanding of biological systems can be *** integration paves the way for the development of new therapeutic approache. and diagnostic tools.

关键词： Phenomics Imaging Genomics Transcriptomics Proteomics Immunomics Metabolomics

Do abrupt cryosphere events in High Mountain Asia indicate earlier tipping point than expected?

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Advances in Climate Change Research 2023年第6期14卷 873-883页

作者： Cun-De XIAO Tong ZHANG Tao che.Zhi-Qiang WEI Tong-Hua WU Lei HUANG Ming-Hu DING Qiao LIU Dong-Hui SHANGGUAN Fei-Teng WANG Peng-ling WANG Jie che. Chun-Hai XU Xin-Wu XU Da-He QIN State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100875China State Key Laboratory of Cryospheric Science Chinese Academy of SciencesLanzhou 730000China Faculty of Arts and Sciences Beijing Normal UniversityZhuhai 519000China National Climate Centre China Meteorological AdministrationBeijing 100081China Global Change and Polar Institute Chinese Academy of Meteorological ScienceBeijing 100081China Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610299China

Tipping points of about 16 elements have been identified in Earth system,yet cryospheric tipping point of specific Alpine region has not been *** we analyzed three tipping elements(mountain glacier,snow cover,and permafrost)identified in recent years,evidenced by the facts of frequent occurrence of abrupt massive collapse of glacier mass and the widespread thermakarst of *** 2015,strikingly abrupt cryosphere events(ACEs)have been consistently observed over a large range of High Mountain Asia(HMA).Those events were un-precedentedly significant in history,leading to collapses of glaciers following by disconnection of glacier tongue from accumulation basin and recession of thermakarst towards higher *** decreasing of snow depth in 2022 was also observed since 2021/2022 winter,coinciding with extreme warming of the *** widespread high warming rates in the last two decades over HMA might have triggered above *** dynamic thresholds of ACEs depend largely on high temperature,especially extreme heat wave,for both glaciers and permafrost,closely related to meltwater as a key factor for reaching initial conditions of abrupt changes,suggesting HMA cryosphere is a tipping element under the global warming level of 1.1℃.The ACEs can cause tremendous damage to local ecosystem and socioeconomy,measures to mitigate risks should be taken when the tipping points are reache..

关键词： Abrupt glacier change Thermakarst Snow depth Tipping point Early warning system

对话范式:中国当代马克思主义研究的重要方法

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教学与研究 2012年第11期 22-27页

作者：姚新立车玉玲苏州大学政治与公共管理学院江苏苏州215123

马克思主义研究的根本目标是关注现实问题,然而如何关注现实与如何使马克思主义哲学真正地在我们的时代"出场",这是当代学界研究中面临的一个根本问题和焦点。"对话"无疑是一种很好的研究范式,使马克思哲学与当代对话、与国外马克思主... 详细信息

马克思主义研究的根本目标是关注现实问题,然而如何关注现实与如何使马克思主义哲学真正地在我们的时代"出场",这是当代学界研究中面临的一个根本问题和焦点。"对话"无疑是一种很好的研究范式,使马克思哲学与当代对话、与国外马克思主义理论对话、与中国现实对话。20世纪80年代以后,对话范式作为国内学界的一种主要研究方法,对马克思主义中国化和当代化,无疑具有很好的推动作用。

关键词：对话范式马克思主义研究

多用户多输入多输出系统下行链路的线性预编码和功率分配

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上海交通大学学报 2007年第8期41卷 1370-1373页

作者：车小林何晨蒋铃鸽上海交通大学电子工程系上海200240

针对下行链路多用户多输入多输出(MIMO)系统,提出了一种简单的联合预编码和动态功率分配的方法.该方法把复杂的联合线性预编码设计和功率分配的优化问题分解成两步实现,简化了问题的求解.首先求解线性预编码,然后在此基础上,通过优化不... 详细信息

针对下行链路多用户多输入多输出(MIMO)系统,提出了一种简单的联合预编码和动态功率分配的方法.该方法把复杂的联合线性预编码设计和功率分配的优化问题分解成两步实现,简化了问题的求解.首先求解线性预编码,然后在此基础上,通过优化不同用户的功率分配,使各用户的信干噪比(SINR)相同且最大化,改善了的系统的误码率(BER)性能.仿真表明,所提出的方法与现有的方法相比,可以获得较大的信噪比(SNR)增益.

关键词：多用户多输入多输出下行链路预编码功率分配

Ribosome profiling reveals the translational landscape and allele-specific translational efficiency in rice

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Plant Communications 2023年第2期4卷 119-135页

作者： Xi-Tong Zhu Run Zhou Jian che.Yu-Yu Zheng Muhammad Tahir ul Qamar Jia-Wu Feng Jianwei Zhang Junxiang Gao ling-ling che. National Key Laboratory of Crop Genetic Improvement College of InformaticsHuazhong Agricultural UniversityWuhan 430070China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life Science and TechnologyGuangxi UniversityNanning 530004China

Translational regulation is a critical step in the process of gene expression and governs the synthesis of proteins from *** studies have revealed translational regulation in plants in response to various environmental ***,there have been no studies documenting the comprehensive landscape of translational regulation and allele-specific translational efficiency in multiple plant tissues,especially those of rice,a main staple crop that feeds nearly half of the world’s *** we used RNA sequencing and ribosome profiling data to analyze the transcriptome and translatome of an elite hybrid rice,Shanyou 63(SY63),and its parental varieties Zhenshan 97 and Minghui *** results revealed that gene expression patterns varied more among tissues than among varieties at the transcriptional and translational *** identified 3392 upstream open reading frames(uORFs),and the uORF-containing genes were enriche. in transcription *** 668 of 13492 long non-coding RNAs could be translated into ***,we discovered numerous genes with allele-specific translational efficiency in SY63 and demonstrated that some cis-regulatory elements may contribute to allelic divergence in translational ***,these findings may improve our understanding of translational regulation in rice and provide information for molecular breeding research.

关键词： Ribo-seq translational landscape uORFs lncRNAs allele-specific translational efficiency rice Oryza sativa