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含淀粉膨胀阻燃剂对聚丙烯的性能影响研究

工程塑料应用 2010年第2期38卷 23-25页

作者：景慧胡珊曹晶中国地质大学材料科学与化学工程学院武汉430074

采用淀粉与磷酸三聚氰胺复配成膨胀型阻燃剂,制备了膨胀阻燃聚丙烯(PP),利用热重分析法(TG)与差示扫描量热法(DSC)比较了纯PP和阻燃PP的热稳定性及成炭性,研究了阻燃剂对PP阻燃性能和力学性能的影响。结果表明,当阻燃剂用量为35份时,阻... 详细信息

采用淀粉与磷酸三聚氰胺复配成膨胀型阻燃剂,制备了膨胀阻燃聚丙烯(PP),利用热重分析法(TG)与差示扫描量热法(DSC)比较了纯PP和阻燃PP的热稳定性及成炭性,研究了阻燃剂对PP阻燃性能和力学性能的影响。结果表明,当阻燃剂用量为35份时,阻燃PP的拉伸强度为17.1 MPa,断裂伸长率为23.5%,弯曲弹性模量为1.62 GPa,弯曲强度为36.36 MPa,氧指数达到26%。

关键词：淀粉膨胀阻燃剂聚丙烯

基于相空间重构的支持向量机方法在径流中长期预报中应用

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大连理工大学学报 2008年第4期48卷 591-595页

作者：刘冀王本德袁晶瑄周惠成大连理工大学土木水利学院辽宁大连116024

水文中长期预报对于水资源规划管理、水库及水电站调度具有十分重要的意义.针对常规混沌预测方法的局限性,提出基于相空间重构的支持向量机(SVM)预报方法.该方法首先对径流时间序列进行混沌辨识,然后对其进行相空间重构,采用基于结构风... 详细信息

水文中长期预报对于水资源规划管理、水库及水电站调度具有十分重要的意义.针对常规混沌预测方法的局限性,提出基于相空间重构的支持向量机(SVM)预报方法.该方法首先对径流时间序列进行混沌辨识,然后对其进行相空间重构,采用基于结构风险最小化的SVM进行径流预报.对于SVM的参数优选问题,以径向基核函数作为核函数,采用混沌变尺度优化方法进行参数寻优.实例表明,该方法优于SVM和人工神经网络(ANN)预报方法,且具有良好的泛化推广能力.

关键词：径流中长期预报相空间重构支持向量机混沌优化人工神经网络

早发型双相障碍健康相关危险行为的危险因素病例对照研究

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中国心理卫生杂志 2015年第12期29卷 921-926页

作者：田野刘靖李雪周娱菁王慧刘静然北京大学精神卫生研究所北京大学第六医院卫生部精神卫生国家重点实验室(北京大学)北京100191

目的：了解早发型双相障碍健康相关危险行为特点及危险因素.方法：采用病例对照研究设计,纳入符合疾病和有关健康问题的国际统计分类第十次修订本（ICD-10）双相障碍标准的起病年龄＜18岁的患者78例（抑郁发作38例,躁狂发作28例,混合状... 详细信息

目的：了解早发型双相障碍健康相关危险行为特点及危险因素.方法：采用病例对照研究设计,纳入符合疾病和有关健康问题的国际统计分类第十次修订本（ICD-10）双相障碍标准的起病年龄＜18岁的患者78例（抑郁发作38例,躁狂发作28例,混合状态2例,缓解期10例）及正常对照100例,用青少年健康相关危险行为自评问卷（AHRBI）评估双相障碍患者的健康相关危险行为.从性别、年龄等人口学资料及起病年龄、总病程、使用抗精神病药治疗史等临床特征方面探讨双相障碍患者健康相关危险行为的危险因素.结果：双相障碍组AHRBI总分与攻击暴力、健康妥协、破坏纪律、无保护性行为、自杀自伤及吸烟饮酒等6项因子评分均高于正常对照组[如总分,55 （38,119） vs.46 （38,65）,P＜0.05].有自杀自伤行为患者与无自杀自伤行为患者相比,起病年龄较大[14.0 （10.0,17.0） vs.14.0 （9.0,16.0）],总病程较短[12.0 （1.0,65.0） vs.26.0 （1.0,103.0）]（均P＜0.05）.Logistic回归分析显示自杀自伤与起病年龄（OR=1.92,95％CI：1.20～3.02）、性别（OR=5.92,95％ CI：1.48～23.52）、抗精神病药治疗史（OR=0.14,95％CI：0.02～0.66）、吸烟饮酒（OR=3.88,95％ CI：1.40 ～ 10.84）、破坏纪律（OR =4.16,95％CI：1.08 ～ 16.08）等因素关联;破坏纪律与攻击暴力（OR=26.74,95％ CI：4.16～171.68）、健康妥协（OR =6.66,95％CI：1.08 ～41.10）关联（均P＜0.05）.结论：早发型双相障碍患者总体健康相关危险行为多于正常对照,患者在6个维度均存在明显增多的健康相关危险行为.起病晚、女性、吸烟喝酒、破坏纪律是自杀自伤行为的危险因素,抗精神病药物治疗史是保护性因素.健康妥协和攻击暴力是破坏纪律行为的危险因素.

关键词：双相障碍早发型健康相关危险行为危险因素病例对照研究

Porosity of polystyrene membranes prepared by supercritical CO2-induced phase inversion

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Journal of Chemistry and Chemical Engineering 2008年第4期2卷 1-7,34页

作者： LI Zhi-yi TANG hui-hua LIUXue-wu XIA Yuan-jing ZHANG Cun-wei JIANG jing-zhi （Research ＆ Design Institute of Fluid and Powder Engineering School of Chemical Engineering Dalian University of Technology Dalian 116012 China）

Microporous asymmetric polystyrene （PS） membranes were prepared by supercritical CO2-induced phase inversion. The effects of different process parameters, such as temperature, COe pressure and PS concentration in casting solution, on the membrane morphologies, pore size distribution and especially on the porosity of the membranes were experimentally investigated. The porosity showed a tendency of increasing to a maximum and then decreasing with an increase of temperature, CO2 pressure or PS concentration. The effects of process parameters on the membrane porosity were explained based on the properties of supercritical fluids.

关键词： polystyrene microporous membrane porosity supercritical CO2 phase inversion

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《四声均和表》和安徽歙县方言的声母

方言 2023年第3期45卷 306-312页

作者：王婧大连外国语大学汉学院辽宁大连

《四声均和表》是一部距今200多年的韵图,作者洪榜是清代安徽歙县人,乾嘉学派皖派学者。本文联系《四声均和表》和现代安徽歙县四种方言,观察《四声均和表》所反映的清代徽语声母系统特点与现代歙县方言的异同,以及四种歙县方言间声母... 详细信息

《四声均和表》是一部距今200多年的韵图,作者洪榜是清代安徽歙县人,乾嘉学派皖派学者。本文联系《四声均和表》和现代安徽歙县四种方言,观察《四声均和表》所反映的清代徽语声母系统特点与现代歙县方言的异同,以及四种歙县方言间声母系统的异同。

关键词：《四声均和表》徽语现代安徽歙县方言声母系统及特点

Clinical and laboratory features of newly diagnosed multiple myeloma:a retrospective,single-centre analysis

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Chinese Medical Journal 2007年第19期120卷 1727-1729页

作者： MAI Yu-jie QI Pei-jing XU Yan ZOU De-hui wang Ya-fei ZHAO Yao-zhong YANG Ren-chi XIAO Zhi-jian QIU Lu-gui Institute of Hematology ＆ Blood Disease Hospital Chinese Academy of Medical Sciences ＆ Peking Union of Medical College Tianjin 300020 China

Multiple myeloma （MM）, a common malignant plasma-cell proliferative disease, accounts for more than 10% of hematologic malignancies. There have been many studies conducted to analyze the clinical and laboratory features of patients with MM. The purpose of this study was to determine the clinical and laboratory features of patients with newly diagnosed MM in a large cohort of consecutive patients seen at the Blood Disease Hospital of Chinese Academy of Medical Swence during a 13-year period.

关键词： multiple myeloma diagnosis survival

Mannose-binding lectin 2 gene polymorphisms and their association with tuberculosis in a Chinese population

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Infectious Diseases of Poverty 2020年第2期9卷 38-49页

作者： Jun-Xian Zhang Wen-Ping Gong Dong-Lin Zhu hui-Ru An You-Rong Yang Yan Liang Jie wang jing Tang Wei-guo Zhao Xue-Qiong Wu Army Tuberculosis Prevention and Control Key Laboratory/Beijing Key Laboratory of New Techniques of Tuberculosis Diagnosis and Treatment Institute for Tuberculosis Researchthe 8th Medical Center of Chinese PLA General Hospital17#Heishanhu RoadHaidian DistrictBeijing 100091China Laboratory of Animal Experiment the 8th Medical Center of Chinese PLA General Hospital17#Heishanhu RoadHaidian DistrictBeijing 100091China Physical Examination Center the 8th Medical Center of Chinese PLA General Hospital17#Heishanhu RoadHaidian DistrictBeijing 100091China Department of Respiration the 8th Medical Center of Chinese PLA General Hospital17#Heishanhu RoadHaidian DistrictBeijing 100091China

Background:Immune-and inflammation-related genes(IIRGs)play an important role in the pathogenesis of tuberculosis(TB).However,the relationship between IIRG polymorphisms and TB risk remains *** this study,the gene polymorphisms and their association with tuberculosis were determined in a Chinese ***:We performed a case-control study involving 1016 patients with TB and 507 healthy controls of Han Chinese ***-four single-nucleotide polymorphisms(SNPs)belonging to 18 IIRGs were genotyped by the PCR-MassArray assay,and the obtained data was analyzed withχ2-test,Bonferroni correction,and unconditional logistic regression ***:We observed significant differences in the allele frequency of LTA rs2229094*C(P=0.015),MBL2 rs2099902*C(P=0.001),MBL2 rs930507*G(P=0.004),MBL2 rs10824793*G(P=0.004),and IL12RB1 rs2305740*G(P=0.040)between the TB and healthy *** TB risk was identified in the rs930507 G/G genotype(Padjusted=0.027)under a codominant genetic model as well as in the rs2099902(C/T+C/C)vs T/T genotype(Padjusted=0.020),rs930507(C/G+G/G)vs C/C genotype(Padjusted=0.027),and rs10824793(G/A+G/G)vs A/A genotype(Padjusted=0.017)under a dominant genetic model after Bonferroni correction in the analysis of the overall TB group rather than the TB ***,the rs10824793_rs7916582*GT and rs10824793_rs7916582*GC haplotypes were significantly associated with increased TB risk(P=0.001,odds ratio[OR]=1.421,95%confidence interval[CI]:1.152-1.753;and P=0.018,OR=1.364,95%CI:1.055-1.765,respectively).Moreover,the rs10824793_rs7916582*AT/AT or rs10824793_rs7916582*GT/GT diplotype showed a protective(P=0.003,OR=0.530,95%CI:0.349-0.805)or harmful(P=0.009,OR=1.396,95%CI:1.087-1.793)effect against the development of ***:This study indicated that MBL2 polymorphisms,haplotypes,and diplotypes were associated with TB susceptibility in the Han Chinese ***,larger sample size studies are needed to furthe

关键词： Tuberculosis Mannose-binding lectin Single-nucleotide polymorphism Genotype Haplotype

A Review on Application and Development of General Prescriptions for Treating Epidemic Diseases in Traditional Chinese Medicine

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World Journal of Integrated Traditional and Western Medicine 2020年第8期6卷 41-50页

作者： ZHAO Kai-wei ZHANG Yu-hui WEI jing-jing LIU Li-xiang Institute of Basic Theory for Chinese Medicine China Academy of Chinese Medical SciencesBeijing 100700China First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300193China

In thousands of years'struggling against epidemic diseases,traditional Chinese medicine(TCM),with its unique and advantageous theories and methods,has protected prosperity of the Chinese nation,composing a brilliant *** are many famous prescriptions and medicines for prevention and treatment of epidemic diseases in *** view of characteristics of epidemic diseases,application of general prescriptions in fighting against epidemic diseases has its unique effects and *** combing and studying the application of TCM general prescriptions for treating epidemic diseases in different historical periods,summarizing experience and reflecting on lessons,this paper tries to define the concept of TCM general prescriptions for treating epidemic diseases,explore elements of their efficacy guarantee,analyze their advantages and limitations,as well as reveal their enlightenment significance and application prospects,or provide ideas and reference for clinical application.

关键词： Epidemic disease General prescriptions Reviews

Novel evidence for the σ-bond linear-chain molecular structure in ^(14)C

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Chinese Physics C 2021年第8期45卷 71-75页

作者： Han-zhou Yu jing Li Yan-Lin Ye BiaoYang Cheng-JianLin hui-Ming Jia Jian-Ling Lou Xiao-Fei Yang T.Baba Qi-Te Li Yu-Cheng Ge Zhi-Huan Li hui Hua Jin-Yan Xu Zai-Hong Yang Jun Feng Hong-Liang Zang Qiang Liu Wei Jiang Yang Liu jing-jing Li Wei Liu Shi-Wei Bai Jie Chen Jia-Xing Han Jia-Hao Chen Kai Ma Dong-Xi wang Lei Yang Nan-Ru Ma LI-Jie Sun School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China FRIB/NSCL Laboratory Michigan State UniversityEast LansingMichigan 48824USA China Institute of Atomic Energy Beijing 102413China Kitami Institute of Technology 090-8507 KitamiJapan Research Center for Nuclear Physics(RCNP) Osaka University10-1 MihogaokaIbarakiOsaka 567-0047Japan Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China

A multi-nucleon transfer and cluster decay experiment,^(7)Li(^(11)B,^(14)C^(*)→α+^(10)Be)α,is conducted at an incident beam energy of 55 *** reaction channel has a significantly large 0-value,which favors populating the high lying resonant states in ^(14)*** decay paths,from these resonances to various states of the final nucleus ^(10) Be,can be selected,owing to the experimentally achieved optimal resolution of the Q-value spectrum.A number of resonant states are reconstructed from the forward emitting 10Be+α fragments,and their major molecular structures can be detected according to the selective decay paths and relative decay widths.A state at 22.4(2)MeV validates the previously measured and theoretically predicted band head of the positive-parity σ-bond linear-chain mo-lecular *** additional resonances at 22.9(2)and 24.2(2)MeV are identified and consistent with the predicted 2^(+) and 4^(+) members of the same molecular band,thus providing novel evidences for the existence of the exotic clustering chain structure in neutron-rich carbon isotopes.A few high energy resonances,which also indicate the presence of the σ-bond molecular structure,are observed;however,further studies are still required to clarify their ascription in band systematics.

关键词： linear-chain state reaction 0-value transfer reaction cluster decay relative branching ratio