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Statistical relations between stellar spectral and luminosity classes and stellar effective temperature and surface gravity

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Research in Astronomy and Astrophysics 2020年第9期20卷 183-191页

作者： Oleg Malkov dana Kovaleva Sergey Sichevsky Gang zhaol Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijjing 100012China Institute of Astronomy Russian Academy of Sciences48 Pyatnitskaya St.Moscow 119017Russia

We have determined new statistical relations to estimate the fundamental atmospheric parameters of effective temperature and surface gravity,using MK spectral classification,and vice *** relations were constructed based on the published calibration tables(for main sequence stars)and observational data from stellar spectral atlases(for giants and supergiants).These new relations were applied to field giants with known atmospheric parameters,and the results of the comparison of our estimations with available spectral classification have been quite satisfactory.

关键词： stars:fundamental parameters

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瑶药星毛冠盖藤正丁醇部位化学成分研究

中国药学杂志 2017年第18期52卷 1580-1584页

作者：王云卿马国需赵丹高亚茹吴桐宇杨峻山梁琼平袁经权许旭东广西师范学院化学与材料科学学院南宁530001 广西药用植物研究所南宁530023 中国医学科学院北京协和医学院药用植物研究所北京100193 哈尔滨商业大学生命科学与环境科学研究中心哈尔滨150076 广西金秀瑶医医院广西金秀5457084

目的对瑶药"肿瘤藤"即星毛冠盖藤(Pileostegia tomentella Hand.-Mazz.)藤茎的化学成分进行研究。方法利用各种色谱方法进行分离纯化,根据理化性质和NMR,MS等波谱技术鉴定化合物的结构。结果从星毛冠盖藤藤茎甲醇提取物中的正丁醇萃取... 详细信息

目的对瑶药"肿瘤藤"即星毛冠盖藤(Pileostegia tomentella Hand.-Mazz.)藤茎的化学成分进行研究。方法利用各种色谱方法进行分离纯化,根据理化性质和NMR,MS等波谱技术鉴定化合物的结构。结果从星毛冠盖藤藤茎甲醇提取物中的正丁醇萃取部位分离鉴定了13个化合物,分别为1-O-(β-D-glucosyl)-2-[2-methoxy-4-(ω-hydroxypropyl)phenoxy]propan-3-ol(1),(+)-lyoniresinol-3a-O-β-D-glucopyranoside(2),紫丁香苷(syringin)(3),柏松苷(coniferin)(4),二氢柏松苷(dihydroconiferin)(5),but-3-enyl-β-D-glucoside(6),4-(2,3-dihydroxypropyl)-2,6-dimethoxy phenyl-β-D-glucopyranoside(7),nikoenoside(8),原儿茶酸乙酯(protocatechuic acid ethyl ester)(9),8-甲氧基香豆素-7-O-β-D-葡萄糖(8-methoxy coumarin-7-O-β-D-glucopyranoside)(10),6-O-R-L-rhamnopyranosyl-β-D-glucopyranoside methyl salicylate(11),烟酰胺(nicotinamide)(12)和3,5-二咖啡酰奎宁酸甲酯(3,5-di-O-caffeoyl quinicacid methyl ester)(13)。结论所有化合物均为首次从该属和该植物中分离得到。

关键词：冠盖藤化学成分正丁醇部位苯丙素香豆素

Material,design,and fabrication of custom prosthetic liners for lower-extremity amputees:A review

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Medicine in Novel Technology and Devices 2023年第1期17卷 34-44页

作者： Xingbang Yang Ruoqi zhao dana Solav Xuan Yang Duncan R.C.Lee Bjorn Sparrman Yubo Fan Hugh Herr School of Biological Science and Medical Engineering Key Laboratory of Biomechanics and Mechanobiology(Beihang University)Ministry of EducationBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing100191China Faculty of Mechanical Engineering TechnionHaifa3200003Israel Rapid Liquid Print BostonMA02129USA Massachusetts Institute of Technology K.Lisa Yang Center for BionicsCambridgeMA02139USA

As a physical interface,a prosthetic liner is commonly used as a transition material between the residual limb and the stiff *** made from a compliant material such as silicone,the main function of a prosthetic liner is to protect the residual limb from injuries induced by load-bearing normal and shear *** to conventional liners,custom prosthetic lower-extremity(LE)liners have been shown to better relieve stress concentrations in painful and sensitive regions of the residual *** custom LE liners have been shown to offer clinical benefits,no review article on their design and efficacy has yet been *** address this shortcoming in the literature,this paper provides a comprehensive survey of custom LE liner materials,design,and fabrication ***,custom LE liner materials and components are summarized,including a description of commercial liners and their ***,digital methods used to design and fabricate custom LE liners are addressed,including residual limb biomechanical modeling,finite element-based design methods,and 3-D printing ***,current evaluation methods of custom/commercial LE liners are presented and *** hope that this review article will inspire further research and development into the design and manufacture of custom LE liners.

关键词： Review Custom prosthetic liner Material Design and fabrication method Digital modeling FEA-informed design Soft/flexible material 3D printing

The silencing of CYP4G19 gene in Blattella germanica using RNAi reduces pyrethroid-resistant

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The silencing of CYP4G19 gene in Blattella germanica using R...

A note on Optimal weights and variable selections for multivariate survival data

中国动物学会寄生虫学专业委员会第十二次全国学术会议暨第三次国际寄生虫学学术研讨会

作者： Zhang Renli zhao Xia Geng Yijie Huang dana Gao Shitong Li Xiaoheng Shenzhen Centre for Diseases Control and Prevention

German cockroaches has become a large population in Shenzhen area because of its pesticide resistance,especially to pyrethroid resistant.A wild strain german cockroaches which were collected in a market where people long-time use a pyrethroid called"Jia Chong Qing"to prevent pest were found resist to Jia Chong Qing with resistance index of 3.88 by

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Science China Mathematics 2009年第6期52卷 1131-1133页

作者： zhao Sihai Dave Department of Biostatistics Harvard School of Public Health and Dana-Farber Cancer Institute Boston MA 02115 USA

Fan et al. are to be congratulated for this important contribution to the analysis of multivariate failure time data. They have provided three regression parameter estimators for multiple covariates in the marginal ha... 详细信息

关键词： weights multivariate estimating variance marginal hazard likelihood asymptotically estimates choose

氮添加及凋落物管理对樟子松人工林土壤理化性质的影响

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生态学杂志 2016年第10期35卷 2699-2706页

作者：赵欣然赵琼王巍巍杨丹郑琳琳艾桂艳曾德慧中国科学院沈阳应用生态研究所大青沟沙地实验站沈阳110016 中国科学院大学北京100049 贵阳学院生物与环境工程学院贵阳550025

氮沉降和凋落物量的改变是全球变化影响森林生态系统的重要途径,然而二者的交互作用对土壤生态过程的影响仍知之甚少。本文研究氮添加(对照和添加10 gN·m^(-2)·a^(-1))和地表凋落物管理(对照、移除和加倍)对科尔沁沙地樟子松人工林干... 详细信息

氮沉降和凋落物量的改变是全球变化影响森林生态系统的重要途径,然而二者的交互作用对土壤生态过程的影响仍知之甚少。本文研究氮添加(对照和添加10 gN·m^(-2)·a^(-1))和地表凋落物管理(对照、移除和加倍)对科尔沁沙地樟子松人工林干季(5月)和湿季(8月)土壤有效氮、基础呼吸和有效磷等的影响。结果表明:凋落物管理对土壤的影响在对照和氮添加样地中差异较大;在对照样地中,凋落物移除和加倍都显著提高了8月土壤呼吸,对有效磷和氮含量基本上无显著影响;在氮添加样地,凋落物移除与加倍均未影响土壤呼吸和有效磷含量,但显著降低有效氮含量;氮添加和凋落量变化的影响在湿季大于干季;单一的氮添加显著降低了8月的土壤有效磷含量和土壤呼吸,而凋落物量加倍减缓了氮沉降对土壤呼吸的抑制和磷限制性的加剧。

关键词：氮添加凋落物移除凋落物加倍有效氮呼吸速率有效磷

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场所的复杂性——对天津的跨文化解读

新建筑 2012年第5期 18-20页

作者：达纳.阿诺德赵纪军英国密德萨斯大学华中科技大学建筑与城市规划学院

分析天津的新城市图景,解读隐含在天津现代城市视觉文化中的中西对话,通过关于视觉与时间的观念来思考场所的复杂性问题。对天津而言,"现代性"是一个复杂的概念,其独特的城市视觉文化是跨文化交流过程的产物。19世纪天津的城市景观超越... 详细信息

分析天津的新城市图景,解读隐含在天津现代城市视觉文化中的中西对话,通过关于视觉与时间的观念来思考场所的复杂性问题。对天津而言,"现代性"是一个复杂的概念,其独特的城市视觉文化是跨文化交流过程的产物。19世纪天津的城市景观超越了国界,多种异域文化并存。每个殖民国家都拥有自己的特定(西方的)视觉认同,并移植到这一东方语境中。这种视觉认同如今被视为这座城市全球化的起点。当下天津城市发展的策略,一方面是更新这些"移植"空间,另一方面力图提升作为一个国际都市的现代特征。那些欧洲古典建筑的美学特征在新的城市语境中再现生机。这种新的城市视觉文化是天津作为一个国际都市的明确标识,并且是在经济层面和象征意义上加以运作的一种资源,跨文化交流的过程藉此得以完成。

关键词：天津跨文化解读现代性城市空间

Application Example of Reinforced Concrete Frame Structure Waste Dam in the Proiect of Valley Sanitary Landfill

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International Journal of Technology Management 2014年第5期 36-41页

作者： zhao Guohan Yang Shunshen Liu Fan Southwest Jiaotong University Chengdu 610031 China

waste dam is one of the most important infrastructures in the project of valley sanitary landfill. On one hand, it forms the landfill capacity required. On the other hand, it improves the slope stability of waste body. Consequently, I think it is very significant to maintain the stability of waste dana for the whole sanitary landfill. Combining with a project example, aiming at the special geological conditions, we have made three plans of waste dam structure, calculation and analysis comparison respectively. Reinforced concrete frame waste dam is highlighted in the project for its advantages, smoothly solving the three problems in the engineering.

关键词： valley sanitary landfill waste dam frame structure structure design

Genome-Wide Analysis of Histone Modifications： H3K4me2, H3K4me3, H3K9ac, and H3K27ac in Oryza sativa L. Japonica

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Molecular Plant 2013年第5期6卷 1463-1472页

作者： Zhou Du Hui Li Qiang Wei Xin zhao Chunchao Wang Qilin Zhu Xin Yi Wenying Xua X. Shirley Liu Weiwei Jin Zhen Su State Key Laboratory of Plant Physiology and Biochemistry College of Biological Sciences China Agricultural University Beijing 100193 China National Maize Improvement Center of China Key Laboratory of Biology and Genetic Improvement of Maize Ministry of Agriculture China Agricultura University Beijing 100193 China Department of Biostatistics and Computational Biology Dana-Farber Cancer Institute and Harvard School of Public Health 450 Brookline Ave Boston MA 02215 USA These authors contributed equally to the article. Present address: Department of Bioinformatics School of Life Sciences andTechnology Tongji University 1239 Siping Road Shanghai 200092 China

While previous studies have shown that histone modifications could influence plant growth and devel- opment by regulating gene transcription, knowledge about the relationships between these modifications and gene expression is still limited. This study used chromatin immunoprecipitation followed by high-throughput sequencing （ChlP-Seq）, to investigate the genome-wide distribution of four histone modifications： di and trimethylation of H3K4 （H3K4me2 and H3K4me3） and acylation of H3K9 and H3K27 （H3K9ac and H3K27ac） in Oryza sativa L. japonica. By analyz- ing published DNase-Seq data, this study explored DNase-Hypersensitive （DH） sites along the rice genome. The histone marks appeared mainly in generic regions and were enriched around the transcription start sites （TSSs） of genes. This analysis demonstrated that the four histone modifications and the DH sites were all associated with active transcription. Furthermore, the four histone modifications were highly concurrent with transcript regions-a promising feature that was used to predict missing genes in the rice gene annotation. The predictions were further validated by experimentally confirming the transcription of two predicted missing genes. Moreover, a sequence motif analysis was constructed in order to identify the DH sites and many putative transcription factor binding sites.

关键词： bioinformatics chromatin structure and remodeling epigenetics gene regulation genomics rice.