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1,3,3-三硝基氮杂环丁烷的热安全性

化学学报 2009年第22期67卷 2536-2540页

作者：赵宏安胡荣祖王喜军赵凤起高红旭张海张晓亮冯煜马海霞西北大学信息科学与技术学院西安710069 西安近代化学研究所西安710065 西北大学数学系/数据分析与计算化学研究所西安710069 西北大学化工学院西安710069

借助不同加热速率(β)的非等温DSC曲线离开基线的初始温度(T0)、onset温度(Te)和峰顶温度(Tp),Kissinger法和Ozawa法求得的热分解反应的表观活化能(Ek和EO)和指前因子(Ak),Hu-Zhao-Gao方程lnβi=ln[A0/(be0orp0G(α))]+be0orp0Teiorpi求得的be0orp0,Zhao-Hu-Gao方程lnβi=ln[A0/((ae0orp0+1)G(α))]+(ae0orp0+1)lnTeiorpi求得的ae0orp0,微热量法确定的比热容(Cp),以及密度(ρ)、热导率(λ)和分解热(Qd,取爆热之半)数据,Zhang-Hu-Xie-Li公式、Hu-Yang-Liang-Xie公式、Hu-Zhao-Gao公式、Zhao-Hu-Gao公式、Smith方程、Friedman公式和Bruckman-Guillet公式,计算了TNAZ在β→0时的T0,Te和Tp值(T00,Teo和Tp0)、热爆炸临界温度(Tbe和Tbp)、绝热至爆时间(tTlad)、撞击感度50%落高(H50)和热点起爆临界温度(Tcr),得到了评价TNAZ热安全性的结果:TSADT=Te0=485.81K,Tp0=497.38K,Tbeo=499.50K,Tbp0=513.45K,tTlad=8.90s(n=0),tTlad=8.96s(n=1),tTlad=9.01s(n=2),H50=28.88cm,Tcr=641.46K(Troom=293.15K),Tcr=658.89K(Troom=300K),表明:(1)TNAZ对热是稳定的;(2)撞击感度好于环三亚甲基三硝胺(RDX);(3)热点起爆临界温度高于RDX,而界于1,3,5-三氨基-2,4,6-三硝基苯(TATB)和六硝基茋(HNS)之间.

关键词： TNAZ 热安全性自加速分解温度热爆炸临界温度绝热至爆时间撞击感度特性落高撞击热点起爆临界温度

阿帕替尼联合安替可治疗耐药型进展期胃癌12例临床研究

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中国中西医结合消化杂志 2017年第7期25卷 502-505页

作者：赵增虎王明贤宁宇李海李凤玉解放军第251医院肿瘤科河北张家口075000 河北建筑工程学院能源与环境工程学院河北张家口075000

[目的]为了探讨阿帕替尼联合安替可治疗耐药型进展期胃癌的有效性及安全性。[方法]将入选病例根据患者家庭经济状况及个人意愿分为2组,治疗组采用阿帕替尼联合安替可方案,阿帕替尼初治剂量500mg/次,1次/d,1周期后患者能耐受剂量增至750... 详细信息

[目的]为了探讨阿帕替尼联合安替可治疗耐药型进展期胃癌的有效性及安全性。[方法]将入选病例根据患者家庭经济状况及个人意愿分为2组,治疗组采用阿帕替尼联合安替可方案,阿帕替尼初治剂量500mg/次,1次/d,1周期后患者能耐受剂量增至750mg/次,1次/d。安替可胶囊2粒/次,3次/d。对照组采用单药安替可治疗,用药方法同治疗组。3周为1周期,4周期后评价近期疗效,4周期后2组仍继续口服安替可胶囊,随访并观察中位PFS及中位OS。治疗组如评价有效继续口服阿帕替尼,如评价无效停服阿帕替尼。治疗前及治疗4周期后抽血查MMP-2、MMP-9。[结果]治疗组疾病控制率DCR66.7%,对照组疾病控制率DCR21.4%,2组差异有统学意义,P<0.05。治疗组中位PFS 3.1个月,对照组中位PFS 1.4个月,2组比较P<0.01;治疗组中位OS 6.4个月,对照组中位OS 4.1个月,2组比较P<0.01。治疗前2组MMP-2、MMP-9差异无统计学意义,治疗后MMP-2、MMP-9均有不同程度的下降,治疗组较对照组下降更明显,差异有统计学意义,P<0.01。治疗组毒副反应表现为Ⅰ-Ⅱ级的高血压、蛋白尿、肝功损害和手足综合症患者能耐受。[结论]阿帕替尼联合安替可是治疗耐药型进展期胃癌的有效低毒方案,值得推广应用。

关键词：阿帕替尼安替可胶囊进展期胃癌耐药

Feasible study on full-scale delivered power prediction using CFD/EFD combination method

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Journal of Hydrodynamics 2019年第6期31卷 1250-1254页

作者： Jin-bao Wang hai yu Yi feng Shanghai Key Laboratory of Ship Engineering Shanghai 200011China Marine Design and Research Institute of China(MARIC) Shanghai 200011China

Three-dimensional(3-D)power prediction method from model test has been widely accepted and used for many *** factor k is the most important characteristics of 3・D method and very crucial to the accurate power ***,it's rather difficult to get the accurate value of k for those ships with pronounced bulbous or large transom from model *** this paper,a new method to predict power is proposed,using k from CFD while other data from model test(or experimental fluid dynamics(EFD)).Delivered power prediction using the combination of CFD/EFD method agrees well with sea-trial results.

关键词： Power prediction form factor CFD/EFD sea trial

Instance selection method for improving graph-based semi-supervised learning

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Frontiers of Computer Science 2018年第4期12卷 725-735页

作者： hai WANG Shao-Bo WANG yu-feng LI 1 National Key Laboratory for Novel Software Technology Nanjing University Nanjing 210023 China Collaborative Innovation Center of Novel Software Technology and Industrialization Nanjing 210023 China

Graph-based semi-supervised learning is an important semi-supervised learning paradigm. Although graphbased semi-supervised learning methods have been shown to be helpful in various situations, they may adversely affect performance when using unlabeled data. In this paper, we propose a new graph-based semi-supervised learning method based on instance selection in order to reduce the chances of performance degeneration. Our basic idea is that given a set of unlabeled instances, it is not the best approach to exploit all the unlabeled instances; instead, we should exploit the unlabeled instances that are highly likely to help improve the performance, while not taking into account the ones with high risk. We develop both transductive and inductive variants of our method. Experiments on a broad range of data sets show that the chances of performance degeneration of our proposed method are much smaller than those of many state-of-the-art graph-based semi-supervised learning methods.

关键词： graph-based semi-supervised learning performance degeneration instance selection

Effect of cooling temperature on the microstructure and corrosion behavior of X80 pipeline steel

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International Journal of Minerals,Metallurgy and Materials 2020年第3期27卷 347-353页

作者： Jing Ma Fan feng Bai-qing yu hai-feng Chen Li-feng Fan School of Materials Hebei University of Science and TechnologyShijiazhuang 050018China Hebei Key Laboratory of Material Near-Net Forming Technology Shijiazhuang 050018China School of Transportation Inner Mongolia UniversityHohhot 010070China

Dual-phase accelerated cooling(DPAC) was applied to X80 pipeline steel to obtain its microstructure with different amounts of bainite and ferrite. The microstructure, hardness, and polarization behaviors of the steel, cooled to different temperatures, were investigated. Results showed that, with decreasing cooling temperature, the amount of polygon ferrite(PF) increased while that of acicular ferrite(AF) decreased. The amount of bainite correspondingly decreased, except when cooled to 760°C. Moreover, the grain size of ferrite increased. The corrosion behaviors of different phases were distinct. Martensite/austenite(M/A) islands presented at the grain boundary of the PF phase caused small pits. Numerous micro-corrosion cells were formed in the AF and bainite phases, where micropores were prone to form. X80 pipeline steel cooled to 700°C had the best corrosion resistance in the simulated seawater. The decreased amount of the PF phase reduced the area of cathode, resulting in slight corrosion. About 40 vol% of the bainite phase provided strength while the PF phase provided adequate ductility to the X80 steel. It was concluded that the appropriate cooling temperature was 700°C for ideal corrosion resistance and mechanical properties.

关键词： X80 pipeline steel Dual-phase accelerated cooling microstructure corrosion behavior

Sparse Modal Decomposition Method Addressing Underdetermined Vortex-Induced Vibration Reconstruction Problem for Marine Risers

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China Ocean Engineering 2024年第2期38卷 285-296页

作者： DU Zun-feng ZHU hai-ming yu Jian-xing State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation School of Civil EngineeringTianjin UniversityTianjin 300350China

When investigating the vortex-induced vibration(VIV)of marine risers,extrapolating the dynamic response on the entire length based on limited sensor measurements is a crucial step in both laboratory experiments and fatigue monitoring of real *** problem is conventionally solved using the modal decomposition method,based on the principle that the response can be approximated by a weighted sum of limited vibration ***,the method is not valid when the problem is underdetermined,i.e.,the number of unknown mode weights is more than the number of known *** study proposed a sparse modal decomposition method based on the compressed sensing theory and the Compressive Sampling Matching Pursuit(Co Sa MP)algorithm,exploiting the sparsity of VIV in the modal *** the validation study based on high-order VIV experiment data,the proposed method successfully reconstructed the response using only seven acceleration measurements when the conventional methods failed.A primary advantage of the proposed method is that it offers a completely data-driven approach for the underdetermined VIV reconstruction problem,which is more favorable than existing model-dependent solutions for many practical applications such as riser structural health monitoring.

关键词： motion reconstruction vortex-induced vibration(VIV) marine riser modal decomposition method compressed sensing

加速康复外科在腹腔镜肾上腺切除围手术期中的临床应用经验

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中国内镜杂志 2021年第5期27卷 40-45页

作者：金希施林莉莉虞海峰饶大庞温州医科大学附属第二医院(育英儿童医院)泌尿外科浙江温州325000

目的探讨加速康复外科(ERAS)在腹腔镜肾上腺切除围手术期中的临床应用经验。方法2016年1月-2020年12月该院腹腔镜肾上腺切除术患者46例围手术期接受ERAS管理和57例接受传统管理,比较两组患者术后胃肠排气恢复时间、术后2 h疼痛评分、术... 详细信息

目的探讨加速康复外科(ERAS)在腹腔镜肾上腺切除围手术期中的临床应用经验。方法2016年1月-2020年12月该院腹腔镜肾上腺切除术患者46例围手术期接受ERAS管理和57例接受传统管理,比较两组患者术后胃肠排气恢复时间、术后2 h疼痛评分、术后住院时间、尿路感染、尿潴留发生率、呼吸道感染发生率、深静脉血栓形成和切口感染的发生情况。结果两组患者性别、年龄、肾上腺左右侧、肾上腺肿瘤病理分类、肿瘤大小、是否伴有高血压、手术方式(经腹腔或腹膜后)、手术时间和术中出血情况比较,差异均无统计学意义(P>0.05)。ERAS组胃肠排气恢复时间及术后住院日均较传统组时间缩短,呼吸道感染发生率较传统组低,术后2 h疼痛评分较传统组低(P0.05)。结论将ERAS围手术期管理理念运用于临床,能促进腹腔镜肾上腺切除术后康复,值得临床推广。

关键词：加速康复外科腹腔镜肾上腺切除术围手术期胃肠排气恢复时间并发症

Permutation orbifolds of vertex operator superalgebras and associative algebras

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Science China Mathematics 2025年第1期 19-38页

作者： Chongying Dong feng Xu Nina yu Department of Mathematics University of California at Santa Cruz Department of Mathematics Huzhou University Department of Mathematics University of California at Riverside School of Mathematical Sciences Xiamen University

Let V be a vertex operator superalgebra and g =（1 2 ···k） be a k-cycle which is viewed as an automorphism of the tensor product vertex operator superalgebra V■*** this paper,we construct an explicit isomorphism from Ag(V■k) to A（V） if k is odd and to Aσ（V） if k is even where σ is the canonical automorphism of V of order 2 determined by the superspace structure of *** recover previous results by Barron（2016）and Barron and Vander Werf（2014） that there is a one-to-one correspondence between irreducible g-twisted V■k-modules and irreducible V-modules（*** σ-twisted V-modules） when k is odd（***）.This explicit isomorphism is expected to be useful in our further study on the Zhu algebra of the fixed point subalgebra.

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当代大学生生命观存在问题分析及对策研究

现代交际 2011年第11期 220-220页

作者：李海丰于天红吉林农业大学马克思主义学院

当代大学生由于缺乏科学的、正确的生命观,导致他们不能正确理解生命存在的价值和意义,不知道怎样去实现生命的价值。要需要明确生命观的内容,在大学生中开展生命观教育,同时大力营造良好的社会和校园环境,促使他们通过社会实践去实现... 详细信息

当代大学生由于缺乏科学的、正确的生命观,导致他们不能正确理解生命存在的价值和意义,不知道怎样去实现生命的价值。要需要明确生命观的内容,在大学生中开展生命观教育,同时大力营造良好的社会和校园环境,促使他们通过社会实践去实现生命的价值。

关键词：生命观问题对策

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