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Dynamics of Polymeric Fluids 1. The Molecular Theory of Die Swell:A Set of Equation on Swelling Ratio in Extrudates

Journal of Materials Science & Technology 2006年第1期22卷 93-107页

作者： Mingshi song Guixian HU zhihong YANG Qiang xu Sizhu WU Key Laboratory of Science and Technology of Controlled Chemical Reactions Beijing University of Chemical TechnologyBeijing 100029 China

The structural model of the multiple-transient networks and the mechanism of the multiple-reptation entangled chains due to the dynamic reorganization in the entangled sites were extensively applied on the die swell of polymeric liquids in the steady simple shear flow. The total （recoverable and unrecoverable） viscoelastic free energy of deformation and flow, the constitutive equation and the expression of the simple shear （tanψ） were deduced from the conformational probability distribution function of the entangled polymer chains. It found that：（1） the magnitudes of simple shear （tanψ） depended not only on the free recoil （or recoverable strain） but also on the viscous heating （or unrecoverable strain）; （2） the total recoil may be resolved into the instantaneous and delayed recoil. Based on these facts, the functions of the partition and two experiential fractions of the recoverable （1-Wγ） and the unrecoverable （Wγ） conformations for the recoil and viscous heating of polymeric liquids were defined correspondingly. Then the correlation of the instantaneously and ultimately （or total） recoverable strains to the （N1/T12）w and the fraction of trans-form conformation was obtained. After introducing the condition of uniform two-dimensional extension （αx=αy=α, αz=α^-2） and the swell ratio （B=α）, two sets of equations on the instantaneous and ultimate swelling ratios （BE, BEVT） were obtained, and a method to determine the fraction of the recoverable transform conformation were proposed, The equations of BE and BE5 were verified by the experimental data of HDPE （high denisity polyethylene） at two different high temperatures. It shows that the molecular theory of die swell can be used to predict the correlation of the swelling to the （NI/TI2）w and the fraction of trans-form conformation.

关键词： Die swell Entanglement Viscoelastic recoil

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Characterization of 1,4-dihydroxy-2-naphthoyl-coenzyme A synthase(MenB) in phylloquinone biosynthesis of Synechocystis *** 6803

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中国科学：化学 2012年第2期42卷 221-222页

作者： song HaiGang GUO zhihong Department of Chemistry and State Key Laboratory for Molecular Neuroscience The Hong Kong University of Science and TechnologyClear Water Bay Hong Kong SAR China

The gene product Sll1127 is a predicted 1,4-dihydroxy-2-naphthoyl-CoA synthase catalyzing an intramolecular Claisen condensation in the phylloquinone biosynthesis of the cyanobacterium Synechocystis *** *** predicted catalytic function has been verified and the enzyme has been characterized for the first time with kcat = 0.013 s-1 and KM = 9 μ*** catalytic activity is found to strictly depend on externally added bicarbonate with an apparent KD = 0.60 *** addition,this enzyme is inhibited by its 1,4-dihydroxy-2-naphthoyl-CoA product through high-affinity binding,which causes a 18 nm shift of the inhibitor absorption at 392 to 410 nm and engenders a new absorption peak at 345 *** these properties of the cyanobacterial enzyme are closely similar to those of the Escherichia coli orthologue from the menaquinone biosynthetic *** results provide additional supporting evidence for the essential role of bicarbonate as a catalytic base in the enzymatic reaction and the eubacterial origin of the enzymes in the cyanobacterial biosynthesis of phylloquinone.

关键词：酰基辅酶A 合成途径二羟基 NaCl胁迫蓝藻合酶叶绿萘

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The characteristics and sources of natural gases from Ordovician weathered crust reservoirs in the Central Gas Field in the Ordos Basin

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Chinese Journal Of Geochemistry 2008年第2期27卷 109-120页

作者： LI Xianqing HU Guoyi LI Jian HOU Dujie DONG Peng song zhihong YANG Yunfeng State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology Beijing 100083 China State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Langfang Branch of PetroChina Petroleum Exploration and Development Research Institute Langfang 065007 China Energy College China University of Geosciences Beijing 100083 China School of Resource and Safety Engineering China University of Mining and Technology Beijing 100083 China

The Central Gas Field is a famous large-sized gas field in the Ordos Basin of China. However, identification of main gas sources of the Ordovician reservoirs in this gas field remains puzzling. On the basis of a lot of geochemical data and geological research on natural gases, the characteristics and sources of natural gases from Ordovician weathered crust reservoirs in the Central Gas Field in the Ordos Basin were studied. The results indicated that natural gases from Ordovician weathered crust reservoirs in the Central Gas Field in the Ordos Basin have similar chemical and isotopic compositions to highly mature and over-mature dry gases. Both coal-derived gases and oil-type gases coexist in the Central Gas Field in the Ordos Basin. The former was derived mainly from Carboniferous-Permian coal measures and the latter from Lower Paleozoic marine carbonates. It is suggested that coal-derived gases occur in the eastern part of the Central Gas Field while oil-type gases may be produced mainly in the northern, western and southern parts of the Central Gas Field in the Ordos Basin.

关键词：奥陶纪天然气盆地气源

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A LEGISLATIVE MILESTONE

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Beijing Review 2017年第13期60卷 12-16页

作者： song zhihong the Chinese Academy of Governance

Compiling a civil code suited to China’s socialist market economy and the interests of the people is vital for national prosperity and public well-being,and has been a long-cherished dream of generations.

关键词：社会主义市场经济里程立法

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Endophilin isoforms have distinct characteristics in interactions with N-type Ca^(2+) channels and dynamin I

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Neuroscience Bulletin 2012年第5期28卷 483-492页

作者： Qi Tian Ji-Feng Zhang Jinjin Fan zhihong song Yuan Chen Center for Neurobiology Zhongshan School of Medicine Department of Nephrology The First Affiliated Hospital Department of Biochemistry Zhongshan School of Medicine Sun-Yat Sen University Guangzhou 510080 China

Objective Formation of the endophilin II-Ca 2＋ channel complex is Ca 2＋ -dependent in clathrin-mediated endocytosis. However, little is known about whether the other two endophilin isoforms have the same features. The present study aimed to investigate the characteristics of the interactions of all three isoforms with Ca 2＋ channels and dynamin I. Methods N-type Ca 2＋ channel C-terminal fragments （NCFs） synthesized with a 3 H-leucine-labeled kit, were incubated with endophilin-GST fusion proteins, followed by pull-down assay. Results were counted on a scintillation counter. In addition, the different endophilin isoforms were each co-transfected with dynamin I into 293T cells, followed by flow cytometry and co-immunoprecipitation assay. Immunostaining was performed and an image analysis program was used to evaluate the overlap coefficient of cells expressing endophilin and dynamin I. Results All three isoforms interacted with NCF. Endophilins I and II demonstrated clear Ca 2＋ -dependent interactions with NCF, whereas endophilin III did not. Co-immunoprecipitation showed that, compared to endophilin I/II, the interaction between endophilin III and dynamin I was significantly increased. Similar results were obtained from flow cytometry. Furthermore, endophilin III had a higher overlap coefficient with dynamin I in co-transfected 293T cells. Conclusion Endophilin isoforms have distinct characteristics in interactions with NCF and dynamin I. Endophilin III binding to NCF is Ca 2＋ -independent, implying that it plays a different role in clathrin-mediated endocytosis.

关键词： endophilin Ca2+ dynamin I endocytosis proline-rich domain SH3 domain

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Spatial continuous modeling of early Cenozoic carbon cycle and climate

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National Science Review 2024年第4期11卷 30-32页

作者： Yonggang Liu Jian Zhang Haoyue Zuo Zhilin He Jiaqi Guo Qifan Lin Haonan Yu Jiawenjing Lan Jing Han zhihong song Zihan Yin Liang Zhao Yongyun Hu Zhengtang Guo Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic Sciences School of Physics Peking University Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of Sciences State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

The partial pressure of atmospheric CO2（pCO2） is determined by the carbon cycle that involves climate, biogeochemistry, and plate tectonics. In this cycle,atmospheric CO2is converted into organic carbon and carbonates by biological activities and silicate weathering, and buried as sediments. The sediments on the ocean floor are subducted into the Earth’s interior, and subsequently converted back into CO2and outgassed into the atmosphere.

关键词： modeling spatial carbon cycle cenozoic climate continuous early

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Clinical efficacy of Salvia miltiorrhiza in pathological scar treatment:A systematic review and meta-analysis

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Journal of Chinese Pharmaceutical Sciences 2024年第9期33卷 846-856页

作者： zhihong song Jinji Yang Hongzhuang Zhang Wenxia Fan Anqi Zhu Shaojie Li Hao Fu Characteristic Medical Center of Chinese People's Armed Police Force Tianjin 300162China Army Medical University Chongqing 400038China

To systematically assess the clinical efficacy of Salvia miltiorrhiza(SM)in treating pathological scars and provide a reference basis for scar pharmacotherapy,we conducted a comprehensive literature search in both English and Chinese databases from database inception to December *** search terms included Salvia miltiorhiza,cryptotanshinone,tanshinone IIA,sodium-tanshinol,compound Salvia miltiorrhiza dripping pills,cicatrix,cicatrices,and *** inclusion criteria encompassed all clinical randomized controlled studies on the treatment of pathological scars with SM,without regard to blinding or allocation concealment,as well as irrespective of patient nationality,race,or *** from the selected literature were subjected to analysis using Rev Man 5.4 software,employing the standard mean difference or weighted mean difference for numerical variables and odds ratios(ORs)for dichotomous *** significance was set at P<*** eligible studies involving a total of 778 patients met the inclusion *** analysis revealed a significant therapeutic efficacy with an OR of 3.83(95%CI:2.65–5.54),indicating a substantially higher therapeutic efficacy rate in SM group compared to the control ***,the total effective rate of treatment exhibited an OR of 6.94(95%CI:2.53–19.06),signifying a significantly superior treatment outcome in SM *** scar scores,no significant improvement was observed in SM group compared to the control group after 3 months of treatment(mean difference[MD]=–0.96,95%CI:–2.29–0.36).However,after 6 months of treatment,the scar score demonstrated a noteworthy improvement in SM group(MD=–1.37,95%CI:–2.44 to–0.30)compared to the control *** summary,this study affirmed that SM treatment markedly enhanced the therapeutic efficacy and overall treatment efficiency for clinical scar patients,underscoring its positive clinical therapeutic impact on scar patients.

关键词： SM Pathological scar Meta-analysis TGF-β

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宅基地“三权分置”:从产权配置目标到立法实现

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中国土地科学 2019年第6期33卷 28-36页

作者：宋志红中共中央党校(国家行政学院)

研究目的:将中央文件、经济学界和实践探索中对宅基地“三权分置”的经济学表达转换为法学表达,为此项改革的立法“落实”提供支撑。研究方法:理论研究。研究结果:宅基地“三权分置”的政策目标是盘活闲置宅基地和农房,在产权配置上意... 详细信息

研究目的:将中央文件、经济学界和实践探索中对宅基地“三权分置”的经济学表达转换为法学表达,为此项改革的立法“落实”提供支撑。研究方法:理论研究。研究结果:宅基地“三权分置”的政策目标是盘活闲置宅基地和农房,在产权配置上意欲通过“半流转、权利强”的宅基地流转方式实现,在经济学阐释和实践探索中以“转让一定年限宅基地使用权”为表达方式,经法学解构后应表达为“次级用益物权创设”;在法学表达上应将宅基地“三权分置”界定为农户在不退出宅基地使用权的基础上创设并让渡宅基地“子权利”的流转方式,具体包括农户出租宅基地和以权利派生方式让渡“次级宅基地使用权”两种途径;农户享有的宅基地使用权的形式完整性和名称在“三权分置”后仍维持不变,不适宜也不需要以“宅基地资格权”来命名“三权分置”后农户享有的剩余权利。研究结论:宅基地“三权分置”在立法上的权利结构和名称应表达为“农民集体享有宅基地所有权”“农户享有宅基地使用权”“社会主体享有宅基地租赁权或宅基地经营权(次级宅基地使用权)”。

关键词：土地法学宅基地三权分置立法产权

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Population transcriptomics reveals a potentially positive role of expression diversity in adaptation

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Journal of Integrative Plant Biology 2015年第3期57卷 284-299页

作者： Qin Xu Shilai Xing Caiyun Zhu Wei Liu Yangyang Fan Qian Wang zhihong song Wenhui Yang Fan Luo Fei Shang Lifang Kang Wenli Chen Juan Yan Jianqiang Li Tao Sang State Key Laboratory of Systematic and Evolutionary Botany Institute of Botanythe Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Plant Resources and Beijing Botanical Garden Institute of Botanythe Chinese Academy of Sciences Key Laboratory of Plant Germplasm Enhancement and Speciality Agriculture Wuhan Botanical Gardenthe Chinese Academy of Sciences

While it is widely accepted that genetic diversity determines the potential of adaptation,the role that gene expression variation plays in adaptation remains poorly *** we show that gene expression diversity could have played a positive role in the adaptation of Miscanthus ***-seq was conducted for 80 individuals of the species,with half planted in the energy crop domestication site and the other half planted in the control site near native habitats.A leaf reference transcriptome consisting of 18,503 high-quality transcripts was obtained using a pipeline developed for de novo assembling with population RNA-seq *** population structure and genetic diversity of *** were estimated based on 30,609 genic single nucleotide *** expression（Ep） and expression diversity（Ed）were defined to measure the average level and the magnitude of variation of a gene expression in the population,*** was found that expression diversity increased while genetic Resediversity decreased after the species was transplanted from the native habitats to the harsh domestication site,especially for genes involved in abiotic stress resistance,histone methylation,and biomass synthesis under water *** increased expression diversity could have enriched phenotypic variation directly subject to selections in the new environment.

关键词： Adaptation artificial selection de novo assembling expression variation genetic diversity Miscanthus lutarioriparius population transcriptome

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农村集体经济组织的本质特别性

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江西社会科学 2024年第5期44卷 72-84,207页

作者：宋志红中央财经大学法学院中央财经大学不动产与自然资源法研究中心北京100081

农村集体经济组织的本质特别性不是其宽泛意义上的特点或特殊性,而是该组织稳定且独一无二的标识性特征。其本质特别性可以被归纳为四个逐层拓展的方面:在功能上承载集体土地所有权,在职能上承担部分政府职能,在财产和成员上具有法定性... 详细信息

农村集体经济组织的本质特别性不是其宽泛意义上的特点或特殊性,而是该组织稳定且独一无二的标识性特征。其本质特别性可以被归纳为四个逐层拓展的方面:在功能上承载集体土地所有权,在职能上承担部分政府职能,在财产和成员上具有法定性和固有性,在设立上是先有农村集体经济组织后被改造为特别法人。这些本质特别性是贯穿立法始终的底层逻辑,是凝聚立法共识的理论基础,是农村集体经济组织一系列特点和具体制度设计的决定性因素。

关键词：集体经济组织农村集体经济组织法特别法人集体所有特别性

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