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标准导出等价与D-标准Abel范畴

中国科学：数学 2018年第11期48卷 1527-1534页

作者：陈小伍中国科学技术大学数学科学学院合肥230026

1991年, Rickard提出如下猜想:模范畴之间的导出等价总是标准的,即为双边倾斜复形的导出张量函子.本文引入D-标准Abel范畴的概念,并猜想模范畴总是D-标准的.这个猜想等价于Rickard猜想.本文综述这些猜想的相关进展.

关键词： Morita理论导出Morita理论标准导出等价 D-标准Abel范畴 K-标准加法范畴

Suppressive effect of dexamethasone on the neutrophil expression of CD18 in rats with radiation induced brain edema

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neural Regeneration Research 2006年第1期1卷 36-39页

作者： Laixing Wang Yibin Fang Xiaoping Zhou xiaowu Hu Jianmin Liu Department of neurosurgery Changhai Hospital Second Military Medical University of Chinese PLA Shanghai 200433China

BACKGROUnD： Stereo-tactic radiation therapy （SRT） is widely used to treat intracranial diseases, but some patients suffered from radiation induced brain edema after SRT. Once radiation induced brain edema occurs, the treatment is quite difficult, and it always leads to a poor outcome. Dexamethasone has certain therapeutic effect on traumatic brain edema, but the biological mech.nism is still unclear. OBJECTIVE ： To observe the effect of dexamethasone on the neutrophil expression of CD18.DESIGn ： A randomized control observation.SETTInG： ch.nghai Hospital of the Second Military Medical University of ch.nese PLA. MATERIALS ： The experiment was carried out in ch.nghai Hospital of the Second Military Medical University of ch.nese PLA from January 1999 to December 1999. Twenty SD rats （male and female each in half） weighing （250±50） g were used. METHODS： Twenty SD rats were divided into four groups at random. ① Blank control group （n=5）： The rats were not treated without dexamethasone or irradiation;② Irradiation group （n=5）： The rats were given irradiation but no dexamethasone treatment; ③ Irradiation＋1 mg/kg dexamethasone group （n=5）; The rats were treated with irradiation and dexamethasone of 1 mg/kg; ④Irradiation＋5 mg/kg dexamethasone group （n=5）： The rats were treated with irradiation and dexamethasone of 5 mg/kg. The heads of the rats were irradiated with 10 MeV X-ray （30 Gy）, and brain tissue was removed after 2 weeks to observe the pathological ch.nges. Blood samples were taken from the carotid artery, gradient centrifugation was used, and neutrophile layer was obtained, the level of neutrophile expression of CD18 mRnA and quantity of membrane proteins in blood were detected with northern blot and flow cytometry respectively. MAIn OUTCOME MEASURES： ① Blood cell count; ② Pathological results; ③ level of neutrophile expression of CD18 mRnA and quantity of membrane proteins. RESULTS ： All the 20 SD rats were involved in the analysis of results without

关键词： Suppressive effect of dexamethasone on the neutrophil expression of CD18 in rats with radiation induced brain edema Figure CD

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概率语义与句子系统

哲学研究 2000年第4期 73-78,80页

作者：李小五中国社会科学院哲学所

本文讨论概率语义与句子系统的关系,我们考虑的概率语义分两种:句子型的语义和命题型的语义。令L0是由可数个句符和常用句子联结词构成的语言,令L L0是任意句子语言,即L还可以有(作用在句子上的)n元算子。

关键词：语义条件常元逻辑命题经典句子概率

贝壳珍珠质及交叉叠片结构体外类骨磷灰石生长的对比研究

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材料研究学报 2023年第4期37卷 241-247页

作者：季洪梅王絮李小武东北大学材料科学与工程学院、材料各向异性与织构教育部重点实验室沈阳110819

对具有交叉叠片结构的扇贝和珍珠质结构的褶纹冠蚌贝壳进行表面预处理和体外生物活性实验,对比研究了类骨磷灰石在这两种不同微观结构表面的生长。在磷酸缓冲液PBS中浸泡的初始阶段,磷灰石在交错层状结构表面沉积得很紧密,沉积速度较高... 详细信息

对具有交叉叠片结构的扇贝和珍珠质结构的褶纹冠蚌贝壳进行表面预处理和体外生物活性实验,对比研究了类骨磷灰石在这两种不同微观结构表面的生长。在磷酸缓冲液PBS中浸泡的初始阶段,磷灰石在交错层状结构表面沉积得很紧密,沉积速度较高;而在SBF模拟人体体液中的体外矿化过程中,在交叉叠片结构表面在较短时间内就生成了数量更多的磷灰石。长期浸泡后,两种结构的生物活性没有明显的不同。与珍珠质结构相比,在短时间内交叉叠片结构更有利于类骨磷灰石的生长。

关键词：材料科学其它学科贝壳体外类骨磷灰石成长珍珠质交叉叠片结构

Construction and Analysis of an Immune-Related Gene Prognostic Index for Bladder Cancer

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Journal of Biosciences and Medicines 2022年第8期10卷 82-99页

作者： ch.n Gong Qi Zhao Hao Huang xiaowu Pi Feng Guo Jun Li Ying Xiong The First Affiliated Hospital of Yangtze University Jingzhou China

Objective: To construct an Immune-Related Gene Prognostic Index (IRGPI) for bladder cancer using a bioanalytical approach to analyze its molecular and immunological characteristics, as well as to assess the benefit of Immune checkpoint Inhibitor (ICI) therapy in the IRGPI-defined bladder cancer subgroup. Methods: Twenty-nine immune-related pivotal genes were identified by Weighted Gene Co-expression network Analysis (WGCnA) based on The Cancer Genome Atlas (TCGA) bladder cancer immune dataset (n = 433). Six genes were identified using a multifactorial Cox regression approach to construct the IRGPI and validated against the Gene Expression Omnibus (GEO) dataset (n = 256). Then, molecular and immunological features in the subgroups defined by IRGPI were synthesized by GSEA, Kaplan-Meier survival curves, and other methods, and the benefit of ICI treatment was assessed. Results: IRGPI was constructed based on six genes including AHnAK, ILK, OGn, PDGFD, PPARGC1B, and JAM3. Patients with low IRGPI had better Overall Survival (OS) than those with high IRGPI, which was confirmed in the validation cohort of GEO. Pooled analysis showed that the low IRGPI subgroup was associated with higher infiltration of CD8 T cells, activated memory CD4 T cells, and could benefit from ICI treatment. Meanwhile, high IRGPI subgroups were associated with higher resting memory CD4T cells, M0 macrophages, and M2 macrophage content, immunosuppression, and benefited less from ICI treatment. Conclusion: IRGPI is a novel biomarker with better efficacy in differentiating the prognosis of bladder cancer, molecular and immune features, and evaluation of ICI therapy for individualized treatment of bladder cancer.

关键词： Bladder Cancer Immune-Related Genes IRGPI Survival Prognosis

中短波段输电线路无源干扰防护间距求解的关键问题

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中国电机工程学报 2011年第19期31卷 129-137页

作者：唐波文远芳张小武赵志斌华中科技大学电气与电子工程学院湖北省武汉市430074 国网电力科学研究院湖北省武汉市430074 华北电力大学电气与电子工程学院河北省保定市071003

为更准确地计算输电线路对各类无线台站的无源干扰防护间距,对仿真模型、干扰极大值频率和防护间距计算方法进行研究。仿真模型采用垂直极化平面波进行激励,线路铁塔仿真为面模型,地线仿真为线模型,阐述了线?面模型接点处的基函数及求... 详细信息

为更准确地计算输电线路对各类无线台站的无源干扰防护间距,对仿真模型、干扰极大值频率和防护间距计算方法进行研究。仿真模型采用垂直极化平面波进行激励,线路铁塔仿真为面模型,地线仿真为线模型,阐述了线?面模型接点处的基函数及求解方法。结合当前输电线路无源干扰谐振频率发生在整数倍波长回路谐振频率和λ/4谐振频率的观点,计算了垂直极化平面波激励下的输电线路感应电流和不同观测点处的无源干扰水平。结果表明平面波激励下的无源干扰最大值出现的频率符合1倍波长回路谐振频率,不符合λ/4谐振频率;当频率达短波频段后,整数倍波长回路谐振频率不再适用。提出了输电线路无源干扰防护间距的求解方法,以调幅广播收音台一级台为例,求解了特高压直流输电线路对其的防护间距。

关键词：特高压直流输电线路无源干扰防护间距谐振频率线-面模型感应电流

Improved Brassica rapa reference genome by single-molecule sequencing and chromosome conformation capture technologies

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Horticulture Research 2018年第1期5卷 373-383页

作者： Lei Zhang Xu Cai Jian Wu Min Liu Stefan Grob Feng ch.ng Jianli Liang ch.ngch.ng Cai Zhiyuan Liu Bo Liu Fan Wang Song Li Fuyan Liu Xuming Li Lin ch.ng Wencai Yang Mai-he Li Ueli Grossniklaus Hongkun Zheng xiaowu Wang Institute of Vegetables and Flowers Chinese Academy of Agricultural Science100081BeijingChina College of Horticulture China Agricultural University100193BeijingChina Biomarker Technologies Corporation 101300BeijingChina Department of Plant and Microbial Biology University of Zürich8008ZürichSwitzerland Shandong Provincial Key Laboratory of Protected Vegetable Molecular Breeding Shandong Shouguang Vegetable Seed Industry Group Co.Ltd262700ShouguangShandong ProvinceChina Forest Dynamics Swiss Federal Research Institute WSL8903BirmensdorfSwitzerland

Brassica rapa comprises several important cultivated vegetables and oil *** reference genome assemblies of Brassica rapa are quite fragmented and not highly contiguous,thereby limiting extensive genetic and genomic ***,we report an improved assembly of the *** genome(v3.0)using single-molecule sequencing,optical mapping,and chromosome conformation capture technologies(Hi-C).Relative to the previous reference genomes,our assembly features a contig n50 size of 1.45 Mb,representing a~30-fold *** also identified a new event that occurred in the *** genome~1.2 million years ago,when a long terminal repeat retrotransposon(LTR-RT)*** analysis refined the relationship of genome blocks and accurately located the centromeres in the *** *** *** genome v3.0 will serve as an important community resource for future genetic and genomic studies in *** resource will facilitate breeding efforts in ***,as well as comparative genomic analysis with other Brassica species.

关键词： species. conformation breeding

温度对AgCu/光滑TC4体系润湿铺展动力学的影响

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稀有金属 2017年第8期41卷 898-903页

作者：余啸李玉龙何鹏胡小武胡瑢华南昌大学机电工程学院机器人及焊接自动化重点实验室江西南昌330031 哈尔滨工业大学先进焊接与连接国家重点实验室黑龙江哈尔滨150001

研究了试验温度对AgCu/光滑TC4钛合金体系的润湿铺展动力学的影响,实验过程采用座滴法,全程高纯氩气保护。结果表明,试验温度的升高明显促进了AgCu/光滑TC4体系的润湿性和界面反应。当试验温度为1103和1133 K时,AgCu钎料在TC4基板上的... 详细信息

研究了试验温度对AgCu/光滑TC4钛合金体系的润湿铺展动力学的影响,实验过程采用座滴法,全程高纯氩气保护。结果表明,试验温度的升高明显促进了AgCu/光滑TC4体系的润湿性和界面反应。当试验温度为1103和1133 K时,AgCu钎料在TC4基板上的润湿铺展过程相似,整个润湿铺展过程大致可分为4个阶段:初始阶段,快速铺展阶段,缓慢铺展阶段和渐进平衡阶段。当试验体系温度为1213 K,化学反应更为强烈,AgCu钎料在TC4基板上的润湿铺展速度明显地加快,整个润湿铺展过程缩短至3个阶段:初始阶段,快速铺展阶段和渐进平衡阶段。试验温度为1103和1133 K时,钎料熔敷/母材的界面结构均为残余的富银相/Ti_3Cu_4/富钛相+Ti_2Cu/TC4基板;当试验温度为1213 K时,其界面结构转变为残余的富银相/Ti_3Cu_4/Ti_2Cu/富钛相+Ti_2Cu/TC4基板。且随着温度的升高,各个界面反应层的厚度均增加,残余的富银相厚度减小。AgCu钎料在光滑TC4基板上的润湿铺展动力学遵循Rn^t模型,试验温度不同,n值有所变化。

关键词： AgCu TC4 钎焊润湿铺展动力学

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三倍体西瓜种子种壳结构及机械破壳力学特性

农业工程学报 2012年第17期28卷 44-50页

作者：戴思慧孙小武熊兴耀李明姚珺湖南农业大学园艺园林学院长沙410128 湖南省作物种质创新与资源利用重点实验室长沙410128 湖南农业大学工学院长沙410128

为实现机械破壳代替人工破壳的方式提高无子西瓜种子的发芽率。对比二倍体西瓜种子,用种壳超微结构分析方法解释了三倍体西瓜种子的发芽障碍原因;并采用3种常见的三倍体西瓜种子黑牛、蜜红和花皮,含水率分别为11.1%、11.2%和10.6%,运用... 详细信息

为实现机械破壳代替人工破壳的方式提高无子西瓜种子的发芽率。对比二倍体西瓜种子,用种壳超微结构分析方法解释了三倍体西瓜种子的发芽障碍原因;并采用3种常见的三倍体西瓜种子黑牛、蜜红和花皮,含水率分别为11.1%、11.2%和10.6%,运用常用试验方法对实现机械破壳的力学特性进行了试验研究。试验结果得出三倍体西瓜种子的加载速度对破壳力的影响;设计压缩摇杆时,其调节量标准以各品种的压缩变形量最大值为基准;加载速度宜选择80～100mm/min;最大破壳力为68.97n。研究得到的结果为开发三倍体西瓜种子破壳机械提供了基本参数和理论计算依据。

关键词：种子力学特性测试三倍体西瓜发芽