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The atom-bond connectivity index of chemical bicyclic graphs

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Applied Mathematics(A Journal of Chinese Universities) 2012年第2期27卷 243-252页

作者： chen jin-song GUO Xiao-feng College of Mathematics and Computer Science Hunan Normal University Changsha 410081 China. College of Mathematics and Computer Science Fuzhou University Fuzhou 350108 China. School of Mathematical Sciences Xiamen University Xiamen 361005 China.

The atom-bond connectivity（ABC） index provides a good model for the stability of linear and branched alkanes as well as the strain energy of cycloalkanes,which is defined as ABC（G） =∑ uv∈E（G） √d u＋dv-2 dudv,where du denotes the degree of a vertex u in G.A chemical graph is a graph in which no vertex has degree greater than *** this paper,we obtain the sharp upper and lower bounds on ABC index of chemical bicyclic graphs.

关键词： atom-bond connectivity index chemical bicyclic graph bound.

Ethylene Signaling in Rice and Arabidopsis： Conserved and Diverged Aspects

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Molecular Plant 2015年第4期8卷 495-505页

作者： Chao Yang Xiang Lu Biao Ma Shou-Yi chen jin-song Zhang State Key Lab of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Ethylene as a gas phytohormone plays significant roles in the whole life cycle of plants, ranging from growth and development to stress responses. A linear ethylene signaling pathway has been established in the dicotyledonous model plant Arabidopsis. However, the ethylene signaling mechanism in monocotyledonous plants such as rice is largely unclear. In this review, We compare the ethylene response phenotypes of dark-grown seedlings of Arabidopsis, rice, and other monocotyledonous plants （maize, wheat, sorghum, and Brachypodium distachyon） and pinpoint that rice has a distinct phenotype of root inhibition but coleoptile promotion in etiolated seedlings upon ethylene treatment. We further summarize the homologous genes of Arabidopsis ethylene signaling components in these monocotyledonous plants and discuss recent progress. Although conserved in most aspects, ethylene signaling in rice has evolved new features compared with that in Arabidopsis. These analyses provide novel insights into the understanding of ethylene signaling in the dicotyledonous Arabidopsis and monocotyledonous plants, particularly rice. Further characterization of rice ethylene-responsive mutants and their corresponding genes will help us better understand the whole picture of ethylene signaling mechanisms in plants.

关键词： ethylene response signaling Arabidopsis rice monocotyledonous plants crosstalk

Research advances of SAR remote sensing for agriculture applications: A review

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Journal of Integrative Agriculture 2019年第3期18卷 506-525页

作者： LIU Chang-an chen Zhong-xin SHAO Yun chen jin-song Tuya Hasi PAN Hai-zhu Key Laboratory of Agricultural Remote Sensing Ministry of Agriculture/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China Institute of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijing 100101P.R.China Laboratory of Remote Sensing Information Science Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055P.R.China

Synthetic aperture radar(SAR) is an effective and important technique in monitoring crop and other agricultural targets because its quality does not depend on weather conditions. SAR is sensitive to the geometrical structures and dielectric properties of the targets and has a certain penetration ability to some agricultural targets. The capabilities of SAR for agriculture applications can be organized into three main categories: crop identification and crop planting area statistics, crop and cropland parameter extraction, and crop yield estimation. According to the above concepts, this paper systematically analyses the recent progresses, existing problems and future directions in SAR agricultural remote sensing. In recent years, with the remarkable progresses in SAR remote sensing systems, the available SAR data sources have been greatly enriched. The accuracies of the crop classification and parameter extraction by SAR data have been improved progressively. But the development of modern agriculture has put forwarded higher requirements for SAR remote sensing. For instance, the spatial resolution and revisiting cycle of the SAR sensors, the accuracy of crop classification, the whole phenological period monitoring of crop growth status, the soil moisture inversion under the condition of high vegetation coverage, the integrations of SAR remote sensing retrieval information with hydrological models and/or crop growth models, and so on, still need to be improved. In the future, the joint use of optical and SAR remote sensing data, the application of multi-band multi-dimensional SAR, the precise and high efficient modeling of electromagnetic scattering and parameter extraction of crop and farmland composite scene, the development of light and small SAR systems like those onboard unmanned aerial vehicles and their applications will be active research areas in agriculture remote sensing. This paper concludes that SAR remote sensing has great potential and will play a more

关键词： crop cropland yield soil roughness soil moisture LAI crop height scattering model quantitative remote sensing crop yield estimation SAR

A new iridoid glycoside from Paederia scandens

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Chinese Chemical Letters 2010年第4期21卷 437-439页

作者： He, Da Hai chen, jin song Wang, Xiao Ling Ding, Ke Yi Southwest Univ Nationalities Ethn Pharmaceut Inst Chengdu 610041 Peoples R China

A new glycoside named 6β-O-β-D-glucosylpaederosidic acid(1) was isolated from Paederia scandens and its structure was elucidated on the basis of spectroscopic and chemical evidence,together with four known iridoids,paederoside(2),paederosidic acid(3),paederosidic acid methyl ester(4),and deacetyl asperulosidic acid methyl ester(5).Compound 5 was isolated from this plant for the first time.

关键词： Paederia scandens Iridoids Chemical structure 6β-O-β-D-Glucosylpaederosidic acid Deacetyl asperulosidic acid methyl ester

POLYBINAPHTHYLS INCORPORATING (R)-2,2'-BINAPHTHO-20-CROWN-6 AND NAPHTHYL MOITIES

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Chinese Journal of Polymer Science 2006年第6期24卷 619-625页

作者： Dan Zhu Yi-xiang cheng Xiao-wei Zou Ling-wu chen jin-feng song Zhi-liu Wang College of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China

Chiral polymer was synthesized by the polymerization of （R）-6,6＇-bistributylstannyl-2,2＇-binaphtho-20-crown-6 （M-1） with 1,4-dibromo-2,3-bisbutoxy-naphthyl （M-2） by Pd（PPhs）4 catalyzed Stille coupling reaction. Both monomer and polymer were analyzed by NMR, MS, FT-IR, UV, polarimetry, DSC-TGA, CD, fluorescent spectroscopy and GPC. The major difference between monomer and polymer is that a long wavelength Cotton Effect was observed for the polymer due to its more extended conjugation in the repeating unit and a highly rigid backbone in the polymer chain. Polymer has strong blue fluorescence due to the efficient energy migration from the extended n-electronic structure of the repeating unit of the polymer to the chiral binaphthyl core and is expected to have potential application in the materials of fluorescent sensors and chiral chromatographic packing for resolution ofracemic amino acid.

关键词： (R)-2,2'-Binaphtho-20-crown-6 Chiral polymer Fluorescence Stille reaction.

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电化学沉积法制备镍枝晶

人工晶体学报 2013年第6期42卷 1237-1240页

作者：陈劲松淮海工学院机械工程学院连云港222005

采用电化学沉积法制备了镍枝晶沉积物,考察了不同的试验参数对枝晶生长过程以及微观形貌的影响。结果表明,枝晶具有典型的自相似性,枝晶容易在高的电流密度下生长,电流密度高,提高了阴极过电位,有利于枝晶形成;电解液里Ni2+浓度的增加,... 详细信息

采用电化学沉积法制备了镍枝晶沉积物,考察了不同的试验参数对枝晶生长过程以及微观形貌的影响。结果表明,枝晶具有典型的自相似性,枝晶容易在高的电流密度下生长,电流密度高,提高了阴极过电位,有利于枝晶形成;电解液里Ni2+浓度的增加,沉积层分型更加明显,制备的镍枝晶逐渐稀疏,分叉也相应减小。随着电解液温度的提高,沉积层由开放型向致密型转化。这是因为在很高电流密度下,很容易发生析氢反应,释放大量气泡;金属离子在气泡之间的空隙被还原形成多孔的沉积层。

关键词：电化学沉积枝晶分型电流密度析氢反应

Indication of the Expression of Transgene in Rice Plant Based on Hyperspectral Remote Sensing Technique Ⅱ——Growth Monitoring of Samples in the Contrast Experiment

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光谱学与光谱分析 2011年第6期31卷 1621-1626页

作者： LI Ru chen jin-song YUAN Ding-yang LIN Hui TAN Yan-ning YUE Yue-min Institute of Space and Earth Information Science The Chinese University of Hong KongHong KongChina China National Hybrid Rice R＆D Center/ Hunan Hybrid Rice Research Center Changsha 410125China Institute of Subtropical Agriculture Chinese Academy of SciencesChangsha 410125China

Since the complication of monitoring and evaluating the problems about the transgenic expression and its impacts on the receptor in the transgenic crop breeding and other relevant evaluated works,the authors in the present work tried to assess the differences of spectral parameters of the transgenic rice in contrast with its parent group quantitatively and qualitatively,fulfilling the growth monitoring of the transgenic *** spectral parameters(spectral morphological characteristics and indices) chosen are highly related to internal or external stresses to the receipts,and thus could be applied as indicators of biophysical or biochemical processes changes of *** ASD portable field spectroradiometer with high-density probe,fine foliar spectra of 8 groups were *** analyzing spectral angle and continuum removal,the spectral morphological differences and their locations of sample spectra were found which could be as auxiliary priori knowledge for quantitative *** investigating spectral indices of the samples,the quantitative differences of spectra were revealed about foliar chlorophyll a+b and carotenoid *** this study both the spectral differences between transgenic and parent groups and among transgenic groups were *** results show that hyperspectral technique is promising and a helpful auxiliary tool in the study of monitoring the transgenic crop and other relevant *** this technique,quantitative and qualitative results of sample spectra could be provided as prior knowledge,as certain orientation,for laboratory professional advanced transgenic breeding study.

关键词： Transgenic rice Hyperspectral remote sensing Growth monitoring

Omeprazole affects clopidogrel efficacy but not ischemic events in patients with acute coronary syndrome undergoing elective percutaneous coronary intervention

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Chinese Medical Journal 2011年第6期124卷 856-861页

作者： REN Yi-hong ZHAO Ming chen Yun-dai chen Lian LIU Hong-bin WANG Yu SUN Zhi-jun chen jin-song HUANG Ting-ting GUO Yu-song XIE Yong-jin WANG Chun-ya Department of Cardiology Chinese People's Liberation Army General Hospital Beijing 100853 China Department of Emergency Medicine Chinese People's Liberation Army General Hospital Beijing 100853 China

Background Omeprazole, usually used in the antiplatelet therapy during percutaneous coronary intervention （PCI） in acute coronary syndrome （ACS）, has been reported to increase ischemic events in retrospective studies. However, other clinical trials gave paradoxical results. The aim of this study was to assess the effects of omeprazole on clopidogrel efficacy and clinical *** All patients （n=172） received aspirin （loading dose 300 mg and maintenance dose 100 mg/d） and clopidogrel （loading dose 600 mg and maintenance dose 75 mg/d） during the therapy. They were randomized to receive omeprazole （20 mg/d） or placebo for 30 days. Residual platelet activities in the adenosine 5＇-diphosphate （ADP） pathway were detected on the fifth day after PCI with thrombelastography （TEG）-mapping. The clinical events were recorded after one *** According to the five levels of platelet activities, the frequency distributions of the inhibition rates were significantly different （P=0.0062）. However, no significant change was seen in the distribution among the highest or the lowest inhibiting levels （〉95% and 〈30% inhibition rate）. And there were no significant differences （P 〉0.05） in events incidence, while gastra-intesternal bleeding decreased in co-administration of *** Omeprazole significantly blunts clopidogreal efficacy while not exacerbates ischimic events in ACS undergoing PCI. Omeprazaole even can decrease gastra-intestinal bleeding in those patients.

关键词： omeprazaole clopidogrel platelet activation thrombelastography mapping acute coronary syndrome

转型时期我国社会福利体系的重构与社会认同的转型

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中国人民大学学报 2009年第2期23卷 31-38页

作者：陈劲松中国人民大学社会与人口学院

社会福利是现代社会中社会认同的基础。自1978年以来,以社会保障为核心的中国社会福利体系经历了一个碎裂化与重构的双重过程,而与之相随的则是社会认同经历了从机械型社会认同向有机型社会认同的转型。机械型社会认同具有分割性、强制... 详细信息

社会福利是现代社会中社会认同的基础。自1978年以来,以社会保障为核心的中国社会福利体系经历了一个碎裂化与重构的双重过程,而与之相随的则是社会认同经历了从机械型社会认同向有机型社会认同的转型。机械型社会认同具有分割性、强制性、有损社会公平性、社会化(保险统筹)层次偏低、阻碍社会流动、低效率等特征。与之相反,有机型社会认同则具有利益共享性、边界开放性、多元并存性、可持续发展性等特征。

关键词：社会转型社会福利体系重构社会认同