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Electrocardiogram changes during hematoma enlargement in intracerebral hemorrhage patients

Neural Regeneration Research 2008年第9期3卷 1030-1033页

作者： Zhouping Tang Di Chen Xingyong Chen xiangwu Meng Xuewei Xie xiang Luo Suming zhang Department of Neurology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030Hubei Province China

BACKGROUND： It has been reported that cerebrovascular disease causes changes in electrocardiogram results. OBJECTIVE： To investigate changes in electrocardiogram results in patients with intracerebral bematoma enlargement. DESIGN, TIME AND SETTING： The present case-retrospective analysis study was performed at the Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 2005 to October 2006. PARTICIPANTS： A total of 225 intracerebral hemorrhage patients （142 males and 83 females） that were hospitalized at the Department of Neurology were enrolled the present study. The patient selection was in accordance with diagnostic criteria from the Fourth National Cerebrovascular Disease Congress of China in 1995, and diagnosis was confirmed using computed tomography. All patients underwent computed tomography twice within 24 hours following intracerebral hemorrhage, and were subjected to electrocardiogram examination after admission. METHODS： According to hematoma enlargement following intracerebral hemorrhage, all patients were divided into hematoma enlargement （n = 20） and non-hematoma enlargement （n = 205） groups. Because of the large patient number difference between the two groups, the hematoma enlargement group was matched with the non-hematoma enlargement group. Patients meeting these conditions were included in the non-hematoma enlargement group. Finally, 75 patients were included in the final analysis, 19 in the hematoma enlargement group and 56 in the non-hematoma enlargement group. Clinical data from the two groups were statistically analyzed. MAIN OUTCOME MEASURES： The incidence of electrocardiographic abnormalities between the hematoma enlargement and non-hematoma enlargement groups. RESULTS： In the hematoma enlargement group, 15 patients （79%） developed electrocardiographic abnormafities. In the non-hematoma enlargement group, 24 patients （43%） presented with electrocardiographic abnormalities.

关键词： brain-heart syndrome electrocardiogram hematoma enlargement intracerebral hemorrhage

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Achieving high mechanical properties and corrosion resistance of Al-Zn-Mg matrix composites via regulating intragranular reinforcements

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Journal of Materials Science & Technology 2023年第22期153卷 1-7页

作者： Xudong Rong Yue Li Xiaofeng Chen xiang zhang Dongdong Zhao Chunnian He Chunsheng Shi Naiqin Zhao Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials Tianjin UniversityTianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China

*** Driven by the engineering application of transportation and aerospace,simultaneously achieving excellent mechanical properties and corrosion resistance are urgently required for the next-generation Al matrix compo... 详细信息

关键词： corrosion resistance composites

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Synthesis of 2-Heterocyclomethyl-5-diphenylmethylene-cyclopentanone Hydrochlorides and their Inhibitory Effect on Tumor Cell Growth

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Chinese Chemical Letters 2006年第9期17卷 1181-1184页

作者： Yun Hai zhang Lin xiang ZHAO Zhen Jun BIAN Rui WANG Fu Yuan SUN School of Pharmaceutical Engineering Shenyang Pharmaceutical University Shenyang 110016

Sixteen new 2-heterocyclomethyl-5-diphenylmethylenecyclopentanone hydrochlorides were designed and synthesized. The growth inhibitory effect of these compounds in vitro was conducted using a MTF assay in human breast ... 详细信息

关键词： Cyclopentanone synthesis growth inhibition.

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网络隐蔽通道构建关键技术研究综述

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通信技术 2024年第8期57卷 757-768页

作者：田婧段梦军汪明达魏嘉男何川张翔中国电子科技集团公司第三十研究所四川成都610041

网络隐蔽通道是指在网络环境下用于传输秘密信息的通道。传统网络隐蔽通道的构建主要基于信息内容隐写技术,而目前该领域的研究正逐渐转向通过隐蔽网络通信架构完成隐蔽传输。梳理了当前网络隐蔽通道构建研究领域的主流技术,总结了各网... 详细信息

网络隐蔽通道是指在网络环境下用于传输秘密信息的通道。传统网络隐蔽通道的构建主要基于信息内容隐写技术,而目前该领域的研究正逐渐转向通过隐蔽网络通信架构完成隐蔽传输。梳理了当前网络隐蔽通道构建研究领域的主流技术,总结了各网络层次隐蔽通道的构建技术,介绍了新型网络隐蔽通道,包括流媒体、区块链和IPv6,填补了现有工作的空白,为随后在这些新网络环境中设计隐蔽通道提供了研究思路。最后,提出了隐蔽通道构建面临的主要挑战,一是封锁技术降低了通道的可用性,二是使用机器学习和深度学习技术使得隐蔽通道更易被攻击,并指出了技术上的解决方向。

关键词：网络隐蔽通道信息内容隐写技术新型网络隐蔽通道隐蔽通道构建

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Pancreatic ductal adenocarcinoma holds unique features to form an immunosuppressive microenvironment:a narrative review

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Journal of Pancreatology 2022年第4期5卷 174-185页

作者： Qiang Zhou Dan Chen Junfeng zhang Jifeng xiang Tao zhang Huaizhi Wang Yanyan zhang Institute of Hepatopancreatobiliary Surgery Chongqing General HospitalChongqing 401147China School of Clinical Medicine Chongqing CollegeUniversity of Chinese Academy of SciencesChongqing 400714China

Pancreatic ductal adenocarcinoma(PDAC)is the most common type and composes about 90%of pancreatic cancer featured with high intra-tumoral heterogeneity and poor prognosis,which has been considered the least immunogenic cancer for ***,this characterization might be over-simplistic,and more sophisticated approaches are needed to develop effective treatment *** this review,we aim to summarize studies involving PDAC immunity in different aspects to provide a multidimensional recognition and comprehensively understanding of the mechanisms underlying the tumor microenvironment(TME)of PDAC.A database search of peer-reviewed articles published in English between 2003 and 2022 in PubMed and the Web of Science was *** articles and review articles relevant to the topic were *** emphasized the importance of investigating tumor-infiltrating lymphocytes(TILs)in pancreatic cancer,especially focusing on CD8+T cells,along with indicating potential therapeutic strategies to turn the immune-cold PDACs into the immune-hot ones.

关键词： Cancer-associated fibroblasts Immune-checkpoint blockage Neoadjuvant therapy Pancreatic ductal adenocarcinoma Tumor-infiltrating lymphocytes Tumor microenvironment

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Reduced square Bacillus thuringiensis insecticidal protein content of transgenic cotton under N deficit

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Journal of Integrative Agriculture 2021年第1期20卷 100-108页

作者： CHEN Yuan LIU Zhen-yu Leila I.M.TAMBEL zhang xiang CHEN Yuan CHEN De-hua Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College Yangzhou University/Jiangsu Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou UniversityYangzhou 225009P.R.China Agricultural Research Cooperation Biotechnology and Biosafety Research CenterKhartoum 999129Sudan

To clarify the effect of the N deficit on the amount of square Bt insecticidal protein, different N application rates(0, 75, 150, 225, and 300 kg ha^–1) were imposed on the conventional cultivar Sikang 1(SK-1) and hybrid cultivar Sikang 3(SK-3) during 2015–2016 cotton growth seasons. Under different N application rates, the square number per plant, square volume and square dry weight reduced when the N rates decreased from conventional rate(300 kg ha^–1) to 0 kg ha^–1. And the square Bt protein content decreased accordingly. The analysis of N metabolism showed that soluble protein content, GPT and GOT activities decreased, free amino acid, peptidase and protease activities increased under N deficit. Correlation analysis indicated that the reduced Bt protein content under N deficit was related to altered N metabolism. In conclusion, square development and the amount of square Bt toxin both decreased under N deficit, indicating that promoting the square development under appropriate N application rate would also promote the insect resistance during squaring stage.

关键词： Bt cotton reproductive organ insecticidal protein N deficit N metabolism

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Effects of plant density and mepiquat chloride application on cotton boll setting in wheat–cotton double cropping system

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Journal of Integrative Agriculture 2021年第9期20卷 2372-2381页

作者： CHEN Yuan LIU Zhen-yu HENG Li Leila IMTAMBEL zhang xiang CHEN Yuan CHEN De-hua Jiangsu Key Laboratory of Crops Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College Yangzhou University/Jiangsu Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou 225009P.R.China Agricultural Research Cooperation Biotechnology and Biosafety Research CenterKhartoum 999129Sudan

Sowing cotton directly after harvesting wheat in the Yangtze River Valley of China requires early mature of cotton without yield ***-setting period synchronisation and more yield bolls distributed at the upper and middle canopy layers are also required for *** objective of this study is to quantify the individual and interaction effects of plant density and plant growth regulator mepiquat chloride(MC)on temporal and spatial distributions of yield bolls,as well as yield and yield *** the 2013–2016 cotton growing seasons,the experiments were conducted on a shortseason cotton cultivar CRRI50 at Yangzhou University,*** combinations of plant density(12.0,13.5 and 15.0 plants m^(–2))and MC dose(180,270 and 360 g ha^(–1))were applied on cotton *** combination of 13.5 plants m^(–2)and 270 g ha^(–1)MC resulted in the greatest boll number per unit area,the highest daily boll setting number and more than 90%of bolls positioned within 45–80 cm above the *** conclusion,appropriate MC dose in combination of high plant density could synchronize boll-setting period and retain more bolls at the upper and middle canopy layers without yield reduction in the system of direct-seeded cotton after wheat harvest,and thus overcome the labor-intensive problem in current transplanting cropping system.

关键词： direct-seeded cotton after wheat harvest plant density mepiquat chloride yield and yield components boll setting boll spatial distribution

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Ice storm damage to oak forests in subtropical China

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Forest Ecosystems 2023年第3期10卷 368-377页

作者： Jinyu Guo Jifa Cui Nan Wu Yaqian zhang Jie Wang Hanyu xiang Baoshuang Hu youbing Zhou Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichang443002China

Ice storms,as important sources of frequent and injurious disturbances,drive forest dynamics in the Northern ***,stand-level differential vulnerability to ice storms and the associated factors that predispose forest stands remain *** is particularly concerning in the subtropics where the frequency of ice storms is predicted to increase with global *** we assessed how the impact on three forest stands(early and late secondary-growth forests,and old-growth forests)differed after an extreme ice storm during 20–21 March 2022,and identified the abiotic and biotic factors that determine the damage intensity in the Shennongjia World Natural Heritage Site,a biodiversity conservation hotspot in central *** found a stand-specific‘middomain effect’where the late secondary-growth forest sustained the most severe damage,the early secondarygrowth forest sustained the least,and the old-growth forest suffered an intermediate amount.‘Crown broken’was the most severe damage type across all three forest stands,although the proportion of‘branch broken’was also high in the old-growth *** played a significant role in determining the vulnerability of the early secondary-growth forest to severe ice storms whereas the forest structure and composition were important factors in explaining the damage rates in the old-growth forest,although they differed among the damage *** contrast,topography,forest structure and composition generally explain the intensity of damage in the late secondary-growth *** results highlight that,in subtropical forests,the intensity of damage caused by severe ice storms and related determining factors are stand-level *** also suggest exploring potential management strategies(e.g.,slow-growing hardwood species that can resist storms should be the main species for reforestation in early secondary-growth forests)to mitigate the risk of future severe ice storms,as well as other wind-related cli

关键词： Ice storm Forest stand Extreme climate Forest vulnerability Abiotic and biotic factors Oak forest

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Frequency domain wave equation forward modeling using gaussian elimination with static pivoting

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Applied Geophysics 2011年第1期8卷 60-68,95页

作者： Song Jian-Yong Zheng Xiao-Dong zhang Yan Xu Ji-xiang Qin Zhen Song Xue-Juan Research Department of Geophysics Research Institute of Petroleum Exploration and Development Beijing 10083 China

Frequency domain wave equation forward modeling is a problem of solving large scale linear sparse systems which is often subject to the limits of computational efficiency and memory storage. Conventional Gaussian elimination cannot resolve the parallel computation of huge data. Therefore, we use the Gaussian elimination with static pivoting （GESP） method for sparse matrix decomposition and multi-source finite-difference modeling. The GESP method does not only improve the computational efficiency but also benefit the distributed parallel computation of matrix decomposition within a single frequency point. We test the proposed method using the classic Marmousi model. Both the single-frequency wave field and time domain seismic section show that the proposed method improves the simulation accuracy and computational efficiency and saves and makes full use of memory. This method can lay the basis for waveform inversion.

关键词： Gaussian elimination with static pivoting frequency-domain wave equation forward modeling single-frequency distributed parallel

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钠离子电池正极材料NaNi_(0.4)Fe_(0.2)Mn_(0.4)O_(2)的制备与储钠性能

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电池工业 2024年第2期28卷 66-71页

作者：王洪波向燕宁孟小吻张志磊河南工学院材料科学与工程学院河南新乡453003

钠离子电池作为可替代锂离子电池的下一代电池,具有独特优势,然而要开发出低成本、良好可逆性和长循环寿命的电极材料仍然存在许多技术难题。本文通过简单的共沉淀法合成Ni_(0.4)^(Ⅱ)Fe_(0.2)^(Ⅱ)Mn_(0.4)^(Ⅱ)(OH)_(2)前驱体,再在空... 详细信息

钠离子电池作为可替代锂离子电池的下一代电池,具有独特优势,然而要开发出低成本、良好可逆性和长循环寿命的电极材料仍然存在许多技术难题。本文通过简单的共沉淀法合成Ni_(0.4)^(Ⅱ)Fe_(0.2)^(Ⅱ)Mn_(0.4)^(Ⅱ)(OH)_(2)前驱体,再在空气气氛下加入碳酸钠进行煅烧,制备得到用于钠离子电池的NaNi_(0.4)Fe_(0.2)Mn_(0.4)O_(2)正极材料。利用X射线衍射(XRD)和扫描电镜(SEM)表征材料的物相结构,结果表明制备的材料是典型的层状斜方六面体结构,部分材料呈现单晶特征。采用恒流充放电的测试方法表征材料的电化学性能。在0.1 C的电流密度下,该材料的初始充电容量可达141.9 mAh/g,放电容量为140.0 mAh/g,首次库仑效率高达98.7%。此外,在0.2 C、0.5 C、1 C、2 C和3 C的倍率下,该材料的放电比容量分别为129.5 mAh/g、112.6 mAh/g、97.8 mAh/g、82.9 mAh/g和72.8 mAh/g,且在0.5 C下循环100圈后的容量保持率约为70.0%,具有良好的倍率性和一定的循环稳定性。

关键词： NaNi_(0.4)Fe_(0.2)Mn_(0.4)O_(2) 钠离子电池共沉淀正极材料过渡金属氧化物

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