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Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng li Meifeng Cai Shengjun Miao Yuan li Yu wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

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茶树HD-Zip转录因子基因的克隆及其对非生物胁迫的响应分析

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植物生理学报 2017年第9期53卷 1803-1812页

作者：滕瑞敏李辉王文丽沈威汪迎崔新庄静南京农业大学园艺学院茶叶科学研究所南京210095

茶树作为一种叶用植物,具有重要的经济价值。非生物胁迫对茶树的生长发育过程和茶叶的生产影响很大。本研究采用RT-PCR方法从茶树‘龙井43’cDNA中克隆获得1个编码HD-Zip转录因子的基因CsHB1。序列分析显示,CsHB1基因cDNA长为1 380 bp,... 详细信息

茶树作为一种叶用植物,具有重要的经济价值。非生物胁迫对茶树的生长发育过程和茶叶的生产影响很大。本研究采用RT-PCR方法从茶树‘龙井43’cDNA中克隆获得1个编码HD-Zip转录因子的基因CsHB1。序列分析显示,CsHB1基因cDNA长为1 380 bp,编码459个氨基酸,含有典型的START结构域。进化分析显示,茶树CsHB1属于HD-Zip家族转录因子的IV亚族。多序列对比发现,CsHB1与其他物种的HD-Zip类蛋白的氨基酸序列具有78.05%的相似性,如葡萄、烟草、芝麻等。对CsHB1转录因子理化性质、亲/疏水性、无序化分析显示,CsHB1转录因子是疏水性蛋白且显偏碱性,不存在无序化区域。空间结构分析显示,CsHB1有3个α-螺旋,多个β-折叠,且有START结构域。利用荧光定量PCR方法分析了CsHB1在高温(38°C)、低温(4°C)、PEG干旱(200 g·L^(-1))、NaCl(200 mmol·L^(-1))处理1、4、8、12 h的表达情况。结果表明,CsHB1基因在不同非生物胁迫处理下均能诱导表达,且表达差异性明显。

关键词：茶树 HD-Zip转录因子基因克隆非生物胁迫表达分析

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Ⅰ期临床试验中健康受试者保护的若干问题探讨

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中药新药与临床药理 2017年第1期28卷 117-120页

作者：李睿王淑阁刘静唐旭东高蕊訾明杰中国中医科学院西苑医院北京100091 北京电子科技职业学院北京100176

Ⅰ期临床试验作为新药首次在人体使用,试验风险较大而受试者的获益较小,甚至没有直接获益。针对如何保护受试者这一伦理问题,本文从受试者权益保护的主要责任方即研究者和伦理委员会的角度,探讨受试者保护的关注点以及具体措施,将受试... 详细信息

Ⅰ期临床试验作为新药首次在人体使用,试验风险较大而受试者的获益较小,甚至没有直接获益。针对如何保护受试者这一伦理问题,本文从受试者权益保护的主要责任方即研究者和伦理委员会的角度,探讨受试者保护的关注点以及具体措施,将受试者的保护落到实处。

关键词：受试者保护医学伦理

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Aggregation Behavior of Surface Active Ionic liquids in Aqueous Solution

Aggregation Behavior of Surface Active Ionic Liquids in Aque...

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第十六届全国化学热力学和热分析学术会议

作者： Jing-Jing Jiao,Fei Geng,rui wang,li Yu~* Key Laboratory of Colloid and Interface Chemistry,Shandong University,Ministry of Education,Jinan 250100.

Analogues of long-chain imidazolium-based cationic ILs,l-alky-3-methylimidazolium halide (CmimX),named surface active ionic liquids(SAILs),have received much attention for their inherent *** recent years,several even ... 详细信息

关键词： surface active ionic liquids aggregation behavior thermodynamic parameters

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长江中游新石器时代遗址规模的分布特征

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地理学报 2018年第3期73卷 474-486页

作者：陈瑞李凤全王天阳朱丽东叶玮周国成浙江师范大学地理与环境科学学院金华321004

运用Arc GIS软件建立了长江中游地区9.0~4.0 ka BP文化遗址的空间数据库,采用叠加分析和统计学方法,对文化遗址的规模、海拔分布、坡度、距河流远近等特征进行了系统分析。结果表明:(1)由新石器时代早期到晚期,遗址的数量、规模和分布... 详细信息

运用Arc GIS软件建立了长江中游地区9.0~4.0 ka BP文化遗址的空间数据库,采用叠加分析和统计学方法,对文化遗址的规模、海拔分布、坡度、距河流远近等特征进行了系统分析。结果表明:(1)由新石器时代早期到晚期,遗址的数量、规模和分布范围等均呈现增长或扩大趋势,叠置型遗址个数增加;(2)遗址一般具有低海拔、平缓地形和距河流较近的选址倾向,晚期的文化遗址大体保持该倾向,但对海拔、坡度及距河流远近等的选择开始出现分化。(3)新石器时代晚期不同规模的文化遗址在选址上存在一定分异。小型遗址多分布在坡度为6°~15°的缓坡地,中型及以上规模的遗址更倾向于坡度为2°~6°平缓地;中小型至大型遗址的海拔分布均以30~50 m为主,特大型遗址的海拔分布以50~100 m为主;特大型遗址在距河流1000 m以内的分布比例高于其他规模遗址;(4)新石器文化在早中期受气候、水源、地形等自然环境因素影响较大,晚期文化的适应能力有所增强。

关键词：长江中游新石器时代遗址规模分布特征

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The relationship between level of plasma D-dimer and survival time in metastatic gastric cancer patients

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The Chinese-German Journal of Clinical Oncology 2011年第8期10卷 455-458页

作者： Xiaodong Jiao Jianxin Qian Guanzhen Yu rui li Zhan wang Jin wang Xiaoqiang Gu Jiejun wang Department of Oncology The Affiliated Changzheng Hospital The Second Military Medical University Shanghai200071 China

Objective:The principal purpose of this study was to determine the relationship between level of plasma D-dimer and survival time in metastatic gastric cancer ***:We retrospectively collected the data of plasma D-dimer in metastatic gastric cancer patients admitted in our Department (Department of Oncology,The Affiliated Changzheng Hospital,The Second Military Medical University,Shanghai,China) from October 2006 to October 2008 and analyzed the relationship between level of plasma D-dimer and survival time along with other clinicopathologic ***:A total of 82 patients were studied in our research,52 were males and 30 females,and the mean age was 57 *** 48 cases had a normal plasma D-dimer level (<300μg/L) and 34 had a high plasma D-dimer level (≥300μg/L).In the normal and high plasma D-dimer level groups,the mean survival times were 10.9 (95% CI:9.8-12.2) months and 6.8(95% CI:4.4-7.6) months respectively,and the difference was statistically ***:Metastatic gastric cancer patients with high plasma D-dimer level had significantly shorter survival time than those with normal plasma D-dimer *** of plasma D-dimer can be referred as a potential predictor in metastatic gastric cancer patients.

关键词： metastatic gastric cancer D-dimer survival time

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Fluorinated poly(p-triphenylene isatin) anion exchange membranes based on hydrophilic hydroxyl side chain modulation for fuel cells

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Journal of Energy Chemistry 2025年第1期100卷 702-709页

作者： Yiman Gu Yanchao Zhang Zhanyu li Yijia Lei Baozeng Sun Xiaoyu Yu Zhe wang College of Chemistry and life Science Changchun University of Technology College of Chemical Engineering Changchun University of Technology School of Materials Science and Engineering Changchun University of Technology Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province

The development of alkaline fuel cells is moving forward at an accelerated pace,and the application of ether-free bonded polymers to anion exchange membranes （AEMs） has been widely ***,the question of the“trade-off”between AEM ionic conductivity and dimensional stability remains *** strategy of inducing microphase separation to improve the performance of AEM has attracted much attention recently,but the design of optimal molecular structures is still being ***,this work introduced different ratios of 3-bromo-1,1,1-trifluoroacetone （x=40,50,and 60） into the main chain of poly（p-terphenylene isatin）.Because fluorinated groups have excellent hydrophobicity,hydrophilic hydroxyl-containing side chains are introduced to jointly adjust the formation of phase separation *** results show that PTI-PTF50-NOH AEM with the appropriate fluorinated group ratio has the best ionic conductivity and alkali stability under the combined effect of *** has an ionic conductivity of 133.83 mS cm-1at 80°*** addition,the OH-conductivity remains at 89%of the initial value at 80°C and 3 M KOH for 1056 h of *** cell polarization curve based on PTI-PTF50-NOH shows a power density of 734.76 mW cm-2at a current density of 1807.7 mA cm-2.

关键词： Anion exchange membranes Poly(p-terphenylene isatin) Hydrophilic-hydrophobic phase separation Fluorinated group

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新疆侏罗纪煤田构造样式及其控煤效应

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煤炭学报 2017年第2期42卷 436-443页

作者：王佟夏玉成韦博李瑞明王庆伟杨曙光江涛王传涛中国煤炭地质总局北京100038 西安科技大学地质与环境学院陕西西安710054 新疆维吾尔自治区煤田地质局新疆乌鲁木齐830091 华北水利水电大学河南郑州450046

新疆侏罗纪煤炭资源丰富,但勘查开发程度较低,需对煤田构造展布规律、构造样式及其控煤效应进行系统研究以指导煤炭勘查开发。通过对多年来区域地质和煤田勘探资料的分析研究,根据主要赋煤盆地构造变形的动力学特征,将新疆控煤构造划分... 详细信息

新疆侏罗纪煤炭资源丰富,但勘查开发程度较低,需对煤田构造展布规律、构造样式及其控煤效应进行系统研究以指导煤炭勘查开发。通过对多年来区域地质和煤田勘探资料的分析研究,根据主要赋煤盆地构造变形的动力学特征,将新疆控煤构造划分为挤压、拉张、扭动、反转4大类构造样式,在此基础上,又根据控煤构造组合的几何学、运动学特征,进一步划分为6个亚类和18种型式,对煤系、煤层赋存状态以及煤层开采地质条件具有主要控制作用的构造样式为叠瓦式逆冲构造、推覆式滑脱构造、褶皱构造和走向滑动构造。

关键词：煤田地质赋煤盆地构造控煤构造样式新疆

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Carbon-supported CeNCl as an efficient catalyst for CO_(2)cycloaddition

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Nano Research 2025年第1期18卷 157-163页

作者： li liu lingling Zhang Xiang Chu Baokang Geng Huilin wang Zongxiang li Xiao wang Shuyan Song Hongjie Zhang School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Sinocare Incorporation Changsha 410221China Department of Chemistry Tsinghua UniversityBeijing 100084China

The cycloaddition reaction of CO_(2)with epoxide not only effectively reduces the concentration of CO_(2)in the atmosphere,but also has excellent industrial application value and up to 100%atom utilization,but there are difficulties in separation and recovery of traditional homogeneous catalysts,harsh reaction conditions of traditional heterogeneous catalysts,and activation of CO_(2)*** this paper,an easily synthesized heterogeneous catalyst CeNCl/C was used to catalyze the cycloaddition reaction of CO_(2)with styrene oxide,with a high yield of 92.7%,a high selectivity of 96.7%,a turnover numbers(TON)value of 349,and a good stability demonstrated in six cycle tests(equivalent to 216 h of testing).Through comprehensive studies,it was shown that CeNCl/C contains Lewis acid-base centers as active centers,which can effectively reduce the energy barrier required for ring opening of the reaction substrate,enhance the adsorption and activation of CO_(2),and promote the formation of intermediates,which led to the acquisition of excellent catalytic activity.

关键词： CO_(2)cycloaddition heterogeneous catalysis CeNCl Lewis acid/base

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Mechanism of inflammatory response and therapeutic effects of stem cells in ischemic stroke:current evidence and future perspectives

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Neural Regeneration Research 2025年第1期20卷 67-81页

作者： Yubo wang Tingli Yuan Tianjie Lyu ling Zhang Meng wang Zhiying He Yongjun wang Zixiao li Vascular Neurology Department of NeurologyBeijing Tiantan HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Shanghai Engineering Research Center of Stem Cells Translational Medicine ShanghaiChina National Center for Healthcare Quality Management in Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Institute for Regenerative Medicine Shanghai East HospitalSchool of Life Sciences and TechnologyTongji UniversityShanghaiChina Chinese Institute for Brain Research BeijingChina Research Unit of Artificial Intelligence in Cerebrovascular Disease Chinese Academy of Medical SciencesBeijingChina Beijing Engineering Research Center of Digital Healthcare for Neurological Diseases BeijingChina

Ischemic stroke is a leading cause of death and disability worldwide,with an increasing trend and tendency for onset at a younger ***,in particular,bears a high burden of stroke *** recent years,the inflammatory response after stroke has become a research hotspot:understanding the role of inflammatory response in tissue damage and repair following ischemic stroke is an important direction for its *** review summarizes several major cells involved in the inflammatory response following ischemic stroke,including microglia,neutrophils,monocytes,lymphocytes,and ***,we have also highlighted the recent progress in various treatments for ischemic stroke,particularly in the field of stem cell ***,understanding the complex interactions between inflammation and ischemic stroke can provide valuable insights for developing treatment strategies and improving patient *** cell therapy may potentially become an important component of ischemic stroke treatment.

关键词： cell therapy immune cell inflammatory ischemic stroke stem cell

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