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A New Furostanol Saponin from Dioscorea futshauensis

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Chinese Chemical Letters 2002年第3期13卷 241-244页

作者： Hong Wei LIU Ge Xia QU Xin sheng yao Department of Natural Products Chemistry Shenyang Pharmaceutical UniversityShenyang 110015

A new furostanol saponin presenting moderate bioactivity of inducing morphological deformation of Pyricularia oryzae mycelia was isolated from Dioscorea futshauensis *** by bioactivity-guided fractionation. The structure was established as 26-O-b-D-glucopyranosyl-3b, 26-diol-23(S)-methoxyl-(25R)-furost-5,20 (22)-diene-3-O-[a-L-rhamnopyranosyl (12)-b-D- glucopyranosyl (13)]-b-D-glucopyranoside on the basis of chemical evidencesand spectral analysis, especially by 2D-NMR techniques.

关键词： Furostanol glycoside Dioscorea futshauensis Pyricularia oryzae.

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ABSTRACT

铁道车辆 2013年第5期51卷 I0001-I0002页

作者： yao sheng-jun male born in 1966 senior engineer Beijing Share Holding Magnetic Levitation Technology De- velopment Co. Ltd. Beijing 100124 China

Sintering of solid waste generated in iron and steel manufacturing process in Shougang Jingtang

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Journal of Iron and Steel Research(International) 2017年第7期24卷 697-704页

作者： Yuan-dong Pei sheng-li Wu Shao-guo Chen Zhi-xing Zhao Gang An Zheng-ming Cheng yao-sheng Luo School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Key Laboratory of Ecology and Recycle Metallurgy Ministry of EducationUniversity of Science and Technology Beijing Shougang Research Institute of Technology Shougang Jingtang Integrated Iron and Steel Co. Ltd.

It is important to make full use of waste generated in the iron and steel manufacturing process for energy saving,emission reduction,low carbon production and a circular *** on research on different kinds of industrial solid wastes from Shougang Jingtang,wastes have been optimized for use in *** first,basic tests for all kinds of solid wastes that may be used in sintering were carried out,including chemical composition,calorific value of a fuel,holding time at high temperatures,the sintering pot test,*** results show that the appropriate solid waste ratios for current sintering conditions are：steel slag〈5%,scale 2.0%,environmental ash 2.0%,and cyclone ash 1.0%;blast furnace dry ash,sintering electric field ash,and steelmaking ash should not be circulated in *** for the fuel structure,both coking ash and nut coke should be below 15%.By optimizing the addition of solid wastes,the damage of harmful elements to sintering and blast furnaces has been significantly reduced,which satisfies the demands for blast furnace materials and earns *** utilization of solid wastes has made a contribution to the circular economy and sustainable development.

关键词： Sintering Solid waste Circular economy Green economy

Two new phenolic compounds from Ardisia gigantifolia

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Chinese Chemical Letters 2008年第6期19卷 693-695页

作者： Zhu Yang Ping Wen Nai Li Wang Xin sheng yao College of Traditional Chinese Materia Medica Shenyang Pharmaceutical University Shenyang 110016 China Shenzhen Key Laboratory for New Drugs Research of Traditional Chinese Medicines Research Institute of Tsinghua University Shenzhen 518057 China

Two new compounds were isolated from the 60% ethanol extract of the dried rhizome of Ardisia gigantifolia Stapf. The structures were elucidated on the basis of spectroscopic methods as （＋）-5-（1,2-dihydroxypentyl）... 详细信息

关键词： Ardisia gigantifolia Stapf Phenolic compounds 5-(1,2-Dihydroxypentyl)benzene-1,3-diol

Synthesis and Crystal Structure of 4-(4-Bromophenyl)- 3,4-dihydro-6-methyl quinolin-2(1H)-one

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Chinese Journal of Structural Chemistry 2007年第5期26卷 533-536页

作者： YU Chen-Xia ZHU Xiao-Tong yao Chang-sheng TU Shu-Jiang Department of Chemistry Xuzhou Normal University Xuzhou 221116 China Key Laboratory of Biotechnology for Medical Plants of Jiangsu Province Xuzhou 221116 China

The title compound （C16H14BrNO） has been synthesized by the reaction of p-tolylamine, Meldrum’s acid and 4-bromo-benzaldehyde, and its structure was characterized by IR, 1H NMR and X-ray single-crystal diffraction. The crystal belongs to monoclinic, space group P21/n with a = 7.6850（11）, b = 8.3004（11）, c = 21.301（3）A, β = 95.110（2）°, V = 1353.4（3） A^3, Mr = 316.19, Z = 4, Dc = 1.552 g/cm^3, μ（MoKα） = 3.028 mm-1, F（000） = 640, the final R = 0.0345 and wR = 0.0768. X-ray analysis reveals that the atoms of C（1）, C（2）, C（3）, C（4）, C（5） and N（1） form a six-membered ring of boat conformation.

关键词： quinoline crystal structure

科技创新赋能农村产业融合发展研究——基于空间计量及面板向量自回归模型的实证检验

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技术经济与管理研究 2023年第1期 27-31页

作者：姚升安徽省农业科学院农业经济与信息研究所安徽合肥230031

文章聚焦科技创新与农村产业融合发展,基于空间计量及PVAR模型的实证分析发现,农村产业融合具有显著的、正向的空间溢出效应;科技创新对农村产业融合发展存在显著的正向影响,并且能够促进农村产业融合发展的空间溢出;农村产业融合发展... 详细信息

文章聚焦科技创新与农村产业融合发展,基于空间计量及PVAR模型的实证分析发现,农村产业融合具有显著的、正向的空间溢出效应;科技创新对农村产业融合发展存在显著的正向影响,并且能够促进农村产业融合发展的空间溢出;农村产业融合发展对于来自科技创新的一个标准差冲击表现出持续的正响应,但整体反应并不大;科技创新对农村产业融合发展的方差贡献率偏小。文章进而从优化农村产业融合发展的空间布局、增强要素流动与集约化配置机制、强化知识创新与技术创新互动机制、完善科技创新与产业融合对接机制等方面提出相应的政策建议。

关键词：科技创新农村产业融合空间计量面板向量自回归模型

Antecedent snowmelt and orographic precipitation contributions to water supply of Pakistan disastrous floods,2022

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Advances in Climate Change Research 2024年第3期15卷 419-430页

作者： Yan WANG Peng CUI Chen-Di ZHANG Guo-Tao ZHANG Jian-sheng HAO Xu YUAN yao-Zhi JIANG Lu WANG Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Mountain Hazards and Earth Surface Process Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610299China Polar and Marine Research Institute College of Harbor and Coastal EngineeringJimei UniversityXiamen 361021China School of Resources and Environment University of Electronic Science and Technology of ChinaChengdu 610054China Hebei Province Tangshan Caofeidian Meteorological Bureau Tangshan 063000China

In 2022,the Pakistan witnessed the hottest spring and wettest summer in *** devastating floods inundated a large portion of Pakistan and caused enormous ***,the primary water source and its contributions to these unprecedented floods remain *** on the reservoir inflow measurements,Multi-Source Weighted-Ensemble Precipitation(MSWEP),the fifth generation ECMWF atmospheric reanalysis(ERA5)products,this study quantified the contributions of monsoon precipitation,antecedent snow-melts,and orographic precipitation enhancement to floods in *** found that the Indus experienced at least four inflow up-rushes,which was mainly supplied by precipitation and snowmelt;In upper Indus,abnormally high temperature continued to influence the whole summer and lead to large amounts of snowmelts which not only was a key water supply to the flood but also provided favorable soil moisture conditions for the latter *** July,the snowmelt has higher contributions than the precipitation to the streamflow of Indus River,with contribution value of more than 60%.Moreover,the snowmelt could still supply 20%-40%water to the lower Indus in July and August;The leading driver of 2022 mega-floods over the southern Pakistan in July and August was dominated by the precipitation,where terrain disturbance induced precipitation account to approximately 33%over the southern *** results help to understand the mechanisms of flood formation,and to better predict future flood risks over complex terrain regions.

关键词： Extreme heavy rainfall Snowmelt Orographic precipitation Floods Pakistan

Cytotoxic germacrane-type sesquiterpene lactones from the whole plant of Inula cappa

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Chinese Chemical Letters 2017年第5期28卷 927-930页

作者： Jie-Wei Wu Chun-Ping Tang yao-yao Cai Chang-Qiang Ke Li-Gen Lin sheng yao Yang Ye State Key Laboratory of Drug Research and Natural Products Chemistry DepartmentShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China University of Chinese Academy of Sciences Beijing 100049China Department of NMR Technology Services Public Technical Service CenterShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China State Key Laboratory of Quality Research in Chinese Medidne Institute of Chinese Medical SciencesUniversity of MacaoMacao 999078China School of Life Science and Technology ShanghaiTech UniversityShanghai 201203China

Phytochemical investigation on the whole plant of Inula cappa led to the isolation of two new germacrane-type sesquiterpene lactones,ineupatolides D and E（1 and 2）,together with three known *** structures of the new compounds were established by extensive analysis of 1Dand 2DNMR spectra,as well as MS *** absolute configurations were determined by CD *** compounds showed moderate inhibitory effects on A431,A549,BGC-823,HL-60,HT-29,and MCF-7 cancer cell lines with IC50 values ranging from 2.1 to 36.3 μM.

关键词： Inula cappa Germacrane Sesquiterpene lactones Ineupatolide D Ineupatolide E

Fabrication of mesoporous lignin-based biosorbent from rice straw and its application for heavy-metal-ion removal

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Journal of Environmental Sciences 2017年第3期29卷 132-140页

作者： Fang Xu Ting-Ting Zhu qing-quan Rao sheng-Wen Shui Wen-Wei Li Hong-Bo He Ri-sheng yao School of Medical Engineering Hefei University of TechnologyHefei 230009China CAS Key Laboratory of Urban Pollutant Conuersion Department of ChemistryUniversity of Science&Technology of ChinaHefei 230026China Environmental Monitoring Center of Taizhou Taizhou 31800China

Lignocellulosic biomass offers the most abundant renewable resource in replacing traditional fossil resources. However, it is still a major challenge to directly convert the lignin component into value-added materials. The availability of plentiful hydroxyl groups in lignin macromolecules and its unique three-dimensional structure make it an ideal precursor for mesoporous biosorbents. In this work, we reported an environmentally friendly and economically feasible method for the fabrication of mesoporous lignin-based biosorbent （MLBB） from lignocellulosic biomass through a SOB micro-thermal-explosion process, as a byproduct of microcrystalline cellulose. BET analysis reveal the average pore-size distribution of 5.50 nm, the average pore value of 0.35 cm3/g, and the specific surface area of 186 m2/g. The physicochemical properties of MLBB were studied by fourier transform infrared spectroscopy （FTIR）, attenuated-total-reflection fourier transform infrared spectroscopy （ATR-FTIR）, X-ray photoelectron spectroscopy （XPS）, and element analysis. These results showed that there are large amounts of sutfonic functional groups existing on the surface of this biosorbent. Pb（II） was used as a model heavy-metal-ion to demonstrate the technical feasibility for heavy-metal-ion removal. Considering that lignocellulosic biomass is a naturally abundant and renewable resource and SO3 micro-thermal-explosion is a proven technique, this biosorbent can be easily produced at large scale and become a sustainable and reliable resource for wastewater treatment.

关键词： Lignocellulosic biomassMesoporous biosorbentRice strawLigninSulfur trioxideMicro-thermal-explosion