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广西靖西县新圩铝土矿Ⅶ号矿体矿石热分析

矿物岩石 2008年第4期28卷 53-58页

作者：刘学飞王庆飞张起钻周芳高帮飞徐浩中国地质大学地质过程与矿产资源国家重点实验室北京100083 中国地质大学岩石圈构造、深部过程及探测技术教育部重点实验室北京100083 广西省地质矿产局广西南宁530012

广西靖西新圩堆积型铝土矿为我国典型的一水铝型铝土矿。以新圩堆积型铝土矿的典型样品为研究对象,通过X衍射分析确定其矿物组成,进一步借助差热(DTA)与热重(TG/DTG)分析,探索铝土矿石加热过程。X衍射分析显示5个铝土矿样品矿物组成主... 详细信息

广西靖西新圩堆积型铝土矿为我国典型的一水铝型铝土矿。以新圩堆积型铝土矿的典型样品为研究对象,通过X衍射分析确定其矿物组成,进一步借助差热(DTA)与热重(TG/DTG)分析,探索铝土矿石加热过程。X衍射分析显示5个铝土矿样品矿物组成主要为硬水铝石、赤铁矿、绿泥石、三水铝石、锐钛矿、金红石、针铁矿以及少量的高岭石。差热(DTA)分析显示铝土矿样品有2个明显的吸热峰,分别为三水铝石和硬水铝石吸热峰;热重(TG/DTG)曲线显示样品分解分为4个阶段,分别为吸附水失去阶段和三水铝石、针铁矿、硬水铝石脱羟基作用阶段。利用热重(TG/DTG)数据分别计算了硬水铝石、三水铝石、针铁矿矿物相对百分含量,与国内外同类型铝土矿矿石热分析特征对比显示具有大体一致的热分析特征。

关键词：堆积型铝土矿喀斯特型铝土矿 XRD DTA TG/DTG

Excess non-COVID-19-related mortality among inflammatory bowel disease decedents during the COVID-19 pandemic

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World Journal of Gastroenterology 2024年第20期30卷 2677-2688页

作者： Sarah Rotondo-Trivette Xin-Yuan He Jamil S Samaan Fan Lv Emily Truong Michaela Juels Anthony Nguyen Xu gao jian Zu Yee Hui Yeo Fan-Pu Ji Gil Y Melmed Department of Medicine Cedars-Sinai Medical CenterLos AngelesCA 90048United States Department of Infectious Disease The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina Karsh Division of Gastroenterology and Hepatology Department of Medicine Cedars-Sinai Medical CenterLos AngelesCA 90048United States School of Mathematics and Statistics Xi’an Jiaotong UniversityXi’an 710049Shaanxi ProvinceChina David Geffen School of Medicine University of CaliforniaLos AngelesLos AngelesCA 90095United States Division of Gastroenterology The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina Key Laboratory of Surgical Critical Care and Life Support(Xi’an Jiaotong University) Ministry of EducationXi’an 710004Shaanxi ProvinceChina

BACKGROUND The coronavirus disease 2019(COVID-19)pandemic disrupted healthcare in the United *** To investigate COVID-19-related and non-COVID-19-related death and characteristics associated with excess death among inflammatory bowel disease(IBD)*** We performed a register-based study using data from the National Vital Statistics System,which reports death data from over 99%of the United States population,from January 1,2006 through December 31,***-related deaths among adults 25 years and older were stratified by age,sex,race/ethnicity,place of death,and primary cause of *** and actual age-standardized mortality rates(ASMRs)per 100000 persons were *** 49782 IBD-related deaths occurred during the study ***-COVID-19-related deaths increased by 13.14%in 2020 and 18.12%in 2021[2020 ASMR:1.55 actual vs 1.37 predicted,95%confidence interval(CI):1.26-1.49;2021 ASMR:1.63 actual vs 1.38 predicted,95%CI:1.26-1.49].In 2020,non-COVID-19-related mortality increased by 17.65%in ulcerative colitis(UC)patients between the ages of 25 and 65 and 36.36%in non-Hispanic black(NHB)Crohn’s disease(CD)*** the pandemic,deaths at home or on arrival and at medical facilities as well as deaths due to neoplasms also *** IBD patients suffered excess non-COVID-19-related death during the *** death was associated with younger age among UC patients,and with NHB race among CD *** death at home or on arrival and due to neoplasms suggests that delayed presentation and difficulty accessing healthcare may have led to increased IBD mortality.

关键词： Inflammatory bowel disease Ulcerative colitis Crohn’s disease COVID-19 Excess death Race Sex Disparities

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高等职业教育引领作用的研究与实践

软科学 2011年第12期25卷 143-144页

作者：李高伟易思飞四川财经职业学院成都610101

通过运用经济学和现代市场管理理论进行研究表明:宏观环境因素分析是发挥引领作用的逻辑前提;基于供应链渠道系统,组建职业教育集团(联盟)是高等职业院校发挥引领作用的有效途径;引领作用可以在一定程度上弥补市场失灵。

关键词：高等职业教育引领作用研究与实践

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还原气氛下渣-锍两相平衡反应

钢铁研究学报 2017年第4期29卷 266-271页

作者：张俊何鹏沈鹏飞高建军王锋钢铁研究总院先进钢铁流程及材料国家重点实验室北京100081

通过考察还原气氛下熔渣与锍相之间的平衡情况,研究了渣-锍两相反应的影响因素及机理,探讨了还原产物的分配规律。结果表明,熔渣碱度提高有利于锍相还原反应的进行,添加CaS抑制锍相的还原。由于锍相成分及密度不同出现分层现象,造成锍... 详细信息

通过考察还原气氛下熔渣与锍相之间的平衡情况,研究了渣-锍两相反应的影响因素及机理,探讨了还原产物的分配规律。结果表明,熔渣碱度提高有利于锍相还原反应的进行,添加CaS抑制锍相的还原。由于锍相成分及密度不同出现分层现象,造成锍相在熔渣中的夹杂损失。CaS与金属铁具有互斥性,当熔渣中CaS质量分数超过0.9%之后,渣相中几乎没有金属铁的存在;在选取的实验条件下,CaS在渣、锍两相的平衡分配比维持在0.5左右。

关键词：还原气氛熔渣锍 CaS

先进星载热发射和反射辐射仪(ASTER)——地质学家的最佳选择

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地质通报 2006年第5期25卷 649-652页

作者：陈江付建飞中国地质科学院中国地质调查局沈阳地质矿产研究所辽宁沈阳110032 东北大学

航天遥感技术的发展为地质学家提供了大量可使用的遥感数据。在这些遥感数据中,ASTER具有从可见光到热红外的较宽的波谱范围,能满足对大多数矿物、岩石划分的需要。ASTER的多波段数据除了可以用传统的数据处理方法处理之外,还可以利用... 详细信息

航天遥感技术的发展为地质学家提供了大量可使用的遥感数据。在这些遥感数据中,ASTER具有从可见光到热红外的较宽的波谱范围,能满足对大多数矿物、岩石划分的需要。ASTER的多波段数据除了可以用传统的数据处理方法处理之外,还可以利用高光谱的岩矿信息识别与提取技术进行数据处理,得到更精确的矿物、岩石分类结果。利用GIS评价模型处理ASTER遥感解译的蚀变岩石信息,可以得到精确的遥感异常,从而指导找矿勘查工作。

关键词： ASTER 高光谱蚀变岩石 GIS

Chromosome-level genome assembly of the dotted gizzard shad(Konosirus punctatus) provides insights into its adaptive evolution

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Zoological Research 2022年第2期43卷 217-220页

作者： Bing-jian Liu Kun Zhang Shu-fei Zhang Yi-Fan Liu Jia-Sheng Li Ying Peng Xun Jin Yun-Peng Wang Si-Xu Zheng Li Gong Li-Qin Liu Zhen-Ming Lu National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization Zhejiang Ocean UniversityZhoushanZhejiang 316022China Guangdong Provincial Key Laboratory of Fishery Ecology and Environment South China Sea Fisheries Research InstituteChinese Academy of Fisheries SciencesGuangzhouGuangdong 510300China National Engineering Research Center for Facilitated Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushanZhejiang 316022China

Konosirus punctatus is an economically important marine fishery resource and is widely distributed from the Indian to Pacific *** is a good non-model species for genetic studies on salinity and temperature ***,a high-... 详细信息

关键词： salinity Indian evolution

Experimental investigation of hydrate formation in water-dominated pipeline and its influential factors

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China Geology 2022年第2期5卷 310-321页

作者： Li Huang Jia-le Kang Xiao-dong Shen jian-ye Sun Qing-guo Meng Qiang Chen gao-wei Hu Chang-ling Liu Neng-you Wu Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyChina Geological SurveyMinistry of Natural ResourcesQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China College of Marine Science and Technology China University of GeosciencesWuhan 430074China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu 610059China

Blockage in water-dominated flow pipelines due to hydrate reformation has been suggested as a potential safety issue during the hydrate *** this work,flow velocity-dependent hydrate formation features are investigated in a fluid circulation system with a total length of 39 m.A 9-m section pipe is transparent consisted of two complete rectangular *** means of pressurization with gas-saturated water,the system can gradually reach the equilibrium *** result shows that the hydrates are delayed to appear as floccules or thin films covering the methane *** the circulation velocity is below 750 rpm,hydrate is finally deposited as a“hydrate bed”at upmost of inner wall,narrowing the flow channel of the ***,no plugging is observed during all the experimental *** five stages of hydrate deposition are proposed based on the experimental *** is also revealed that a higher driving pressure is needed at a lower flow *** driving force of hydrate formation from gas and water obtained by melting hydrate is higher than that from fresh water with no previous hydrate *** authors hope that this work will be beneficial for the flow assurance of the following oceanic field hydrate recovery trials.

关键词： Pipeline Water production Circulation Gas hydrate Formation morphology Gas concentration Flowrate NGHs exploration trial engineering Oil and gas exploration engineering Shenhu Area South China Sea

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基于信息熵的社交网络观点演化模型

物理学报 2014年第16期63卷 12-20页

作者：黄飞虎彭舰宁黎苗四川大学计算机学院成都610065

随着网络服务的发展,社交网络逐渐成为信息传播的新媒介.因此,研究网络舆情演化具有重要意义和实用价值.为了更好地研究网络舆论,在信息熵的基础上,提出了一个社交网络观点演化模型.此模型存在以下两个特点:一是可以反映个体面对正负两... 详细信息

随着网络服务的发展,社交网络逐渐成为信息传播的新媒介.因此,研究网络舆情演化具有重要意义和实用价值.为了更好地研究网络舆论,在信息熵的基础上,提出了一个社交网络观点演化模型.此模型存在以下两个特点:一是可以反映个体面对正负两种观点趋向做出抉择时的心理过程;二是可以反映个体形成新观点时主观因素和客观因素的影响.在仿真实验中,讨论了舆论环境对个体观点演化的影响,初始观点和自信度对观点演化的影响,以及意见领袖对群体观点演化的影响.实验结果表明,该模型可以反映真实社交网络中个体的心理学特征,比如个体的观点形成会受到舆论环境的影响,自信的个体不愿意接受他人的观点,当意见领袖存在时群体的观点会受到影响等.

关键词：复杂网络社交网络观点动力学

Assessment of early radial injury after transradial coronary intervention by high-resolution ultrasound biomicroscopy： innovative technology application

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Chinese Medical Journal 2012年第19期125卷 3388-3392页

作者： SHEN Hua ZHOU Yu-jie LIU Yu-yang DU Jie LIU Xiao-li YAN Zhen-xian WANG Zhi-jian gao fei YANG Shi-wei JIA De-an HAN Hong-ya YU Miao MA Qian XU Xiao-han Department of Cardiology Beijing Anzhen Hospital Capital Medical University Beijing Institute of Heart Lung and Blood Vessel Disease The Key Laboratory of Remodeling-related Cardiovascular Disease Ministry of Education Beijing 100029 China Department of Vascular Biology Beijing Anzhen Hospital Capital Medical University Beijing Institute of Heart Lung and Blood Vessel Disease The Key Laboratory of Remodeling-related Cardiovascular Disease Ministry of Education Beijing 100029 China

Background Transradial coronary intervention （TRI） introduces injury to the radial artery （RA） which will affect repeat transradial coronary procedure and the quality as a bypass conduit. We sought to compare the early radial injury after TRI between first-TRI and repeat-TRI by ultrasound biomicroscopy （UBM）. Methods A total of 1116 patients who underwent the transradial coronary procedures were enrolled. The patients depending on whether for the first time to accept transradial coronary procedure were divided into first-TRI group and repeat-TRI group. The RA was examined by UBM before and one day after the procedure. Results Compared with first-TRI group, the mean RA diameter of repeat-TRI one day after the procedure decreased significantly （P 〈0.05）. In first-TRI group, the mean RA diameter was （2.32±0.53） and （1.93±0.57） mm before procedure and one day after the procedure respectively （P 〈0.05）. In repeat-TRI group, the mean RA diameter was （2.37±0.51） and （1.79±0.54） mm before procedure and one day after the procedure, respectively （P 〈0.01）. Compared with first-TRI group, the mean RA diameter was reduced significantly in repeat-TRI group one day after the procedure （P〈0.05）. The early radial injuries and intimal thickening were compared between first-TRI and repeat-TRl. The mean intima-media thickness of RA was （,0.24±0.13） mm and （0.59±0.28） mm before procedure and one day after the procedure in first-TRI group. The mean intima-media thickness of RA was （0.29±0.16） mm and （0.68±0.32） mm before procedure and one day after the procedure in repeat-TRI group. Compared with first-TRI group, the mean intimal thickening was increased significantly in repeat-TRI group one day after the procedure （P〈0.05）. Intimal dissection, stenosis and occlusion were all significantly greater in repeat-TRI RAs （P 〈0.05）. Linear regression analysis revealed that diameter, repeated TRI procedure and PCI procedure were the independent predictors of intimal thickening. Conclusions RA ea

关键词： transradial intervention radial injury ultrasound biomicroscopy