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1Carboniferous Post-collisional Rift Volcanism of the Tianshan Mountains, Northwestern China显示文摘The Tianshan Carboniferous post-collisional rift volcanic rocks occur in northwestern China as a large igneous province. Based on petrogeochemical data, the Tianshan Carboniferous post-collisional rift basic lavas can be classified into two major magma types: (1) the low-Ti/Y type situated in the eastern-central Tianshan area, which exhibits low Ti/Y (<500), Ce/Yb (<15) and SiO2 (43-55%), and relatively high Fe2O3T (6.4-11.5%); (2) the high-Ti/Y type situated in the western Tianshan area, which has high Ti/Y (>500), Ce/Yb (>11) and SiO2 (49-55%), and relatively low Fe2O3T (5.8-7.8%). Elemental data suggest that chemical variations of the low-Ti/Y and high-Ti/Y lavas cannot be explained by fractional crystallization from a common parental magma. The Tianshan Carboniferous basic lavas originated most likely from an OIB-like asthenospheric mantle source (87Sr/86Sr(t) ≈ 0.703-0.705, εNd(t) ≈ +4 to +7). The crustal contamination and continental lithospheric mantle have also contributed significantly to the formation of the basic lavas of the Tianshan Carboniferous post-collisional rift. The silicic lavas were probably generated by partial melting of the crust. The data of this study show that spatial petrogeochemical variations exist in the Carboniferous post-collisional rift volcanics province in the Tianshan region. Occurrence of the thickest volcanics dominated by tholeiitic lavas may imply that the center of the mantle-melting anomaly (mantle plume) was in the eastern Tianshan area at that time. The basic volcanic magmas in the eastern Tianshan area were generated by a relatively high degree of partial melting of the mantle source around the spinel-garnet transition zone, whereas the alkaline basaltic lavas are of the dominant magma type in the western Tianshan area, which were generated by a low degree of partial melting of the mantle source within the stable garnet region, thus the basic lavas of the western Tianshan area might have resulted from relatively thick lithosphere and low geothermal gradient.XIA Linqi, XU Xueyi, XIA Zuchun, LI Xiangmin, MA Zhongping and WANG Lishe Xi’an Institute of Geology and Mineral Resources, China Geological Survey, Xi’an, Shaanxi 710054 E-mail: geologyx@pub.xaonline.com. Liu Shuchun and Liu Xinzhu 2003Acta Geologica Sinica(English Edition)2003,77,3:49
2Relationships between Basic and Silicic Magmatism in Continental Rift Settings:A Petrogeochemical Study of Carboniferous Post-collisional Rift Silicic Volcanics in Tianshan,NW China显示文摘Petrogeochemical data are reported for silicic volcanic rocks from the Tianshan Carboniferous rift, with the aim of discussing the petrogenesis of silicic magmas. Incompatible element vs. incompatible element diagrams display smooth positive trends for the Tianshan Carboniferous rift-related volcanic rocks; the isotope ratios of the silicic lavas [87Sr/86Sr(t)=0.69988–0.70532; εNd(t)=4.76–8.00; 206Pb/204Pb(t)=17.435–18.017; 207Pb/204Pb(t)=15.438–15.509; 208Pb/204Pb(t) = 37.075–37.723] encompass those of the basic lavas. These data suggest a genetic link between rhyolites and basalts, but are not definitive in establishing whether silicic rocks are related to basalts through fractional crystallization or partial melting. Geochemical modeling of incompatible vs. compatible elements excludes the possibility that silicic melts are generated by the melting of basaltic rocks, and indicates a derivation by fractional crystallization plus moderate assimilation of wall rocks (AFC) starting from intermediate rocks to silicic rocks. Continuous AFC from basalt to rhyolite, with small rates of crustal assimilation, best explains the geochemical data. The presence or absence of bimodal volcanism (the “Daly Gap”) might be related to cooling rates of magma chambers. In central and eastern Tianshan, the crust was thinner and the cooling rates of the magma chamber within the crust were greater. These conditions resulted in a rapid fall in temperature within the magma reservoir and caused a narrow temperature interval over which intermediate melts formed, effectively reducing the volume of the intermediate melts.XIA Linqi XIA Zuchun XU Xueyi LI Xiangmin MA Zhongping WANG Lishe 2005Acta Geologica Sinica(English Edition)2005,79,5:14
3发动机的绿色化学设计显示文摘发动机绿色化学设计以发动机化学设计概念和发动机化学反应器模型为基础,旨在实现发动机材料选择、能源利用和环境效应之间的最佳综合效益.发动机燃料系统绿色化学设计的范畴包括:汽油无铅化与汽油抗磨性,柴油低硫化与柴油润滑性,生态燃料与生态摩擦学,汽油机沉积物与汽油清净剂,柴油机颗粒(碳烟)与消烟助燃剂. 发动机润滑系统绿色化学设计的范畴包括:润滑油和添加剂与排放催化转化,润滑剂生物降解性与生物降解润滑剂,润滑油使用与质量监控. 发动机燃料/润滑系统材料绿色化学设计的范畴包括:催化助燃/补燃作用,低散热发动机高温润滑,发动机机械与化学材料制造. 发动机绿色效应的实现取决于发动机诸系统绿色化学设计问题的解决程度.李生华 ntl.pim.ts-inghua.edu.cn/lish ht.rol.cn.net. 金元生 ntl.pim.ts-inghua.edu.cn/lish ht.rol.cn.net. 陈大融 ntl.pim.ts-inghua.edu.cn/lish ht.rol.cn.net. 2000环境科学2000,21,2:3
4Structurally Interesting Diarymethane Derivatives from Securidaca inappendiculata显示文摘Securines A—E,three dimeric diarymethane derivatives(1-3)and two enantiomeric diarymethane derivative monomers(4 and 5),were isolated and characterized from the medicinal plant Securidaca inappendiculata.Compounds 1 and 2 are a pair of enantiomeric diarymethane derivative dimers,and compound 3 is a mesomeric diarymethane derivative dimer.Their structures were determined by a combination of spectroscopic data,X-ray crystallography,electronic circular dichroism(ECD)analysis,and computational ECD calculations.Dimeric compounds 1-3 showed moderate antiplasmodial activities with IC50 values of 0.9,1.4,and 1.5μM,respectively.Bin Zhou Yan Wu Lishe Gan Seema Dalal Maria B.Cassera Jianmin Yue 2020Chinese Journal of Chemistry2020,38,8:2
5Endothelin antagonism and interleukin-6 inhibition attenuate the proatherogenic effects of C-reactive protein显示文摘VermaS LiSH BadiwalaMV 2002Circulation2002,105,16:1
6salicylic acid-induced heat or cold toler- ance in relation to Ca2+ homeostasis and antioxidant sys- tems in young grape plants 显示文摘Wang L J Lish 2006Plant Science2006,170,:1
7The analysis of total iron of K2 Cr2 O7 titrationusing Zn powders as reducer显示文摘GaoXF LiSH 2000Metallurgical Analysis2000,20,:1
8Effect of sowing season, sowing rate and soil type显示文摘Hitchmough J de la Fleur M Find]ay C Estab- lishing North American prairie vegetation in urban parks in northern England:Part 1 2004Landscape and ur- ban planning2004,66,:1
9InhibitoryeffectofLiriodendronbark显示文摘LiSH(李书华) etal 2008江苏农业科学2008,,3:1
10显示文摘LiJ P LiSH deGrootK etal 2002Key Eng Mater2002,218,:1
11Fruit quality and leaf photo synthesos on reponse to microenvironment mdoifecation around in dividual fruit by coveting the fruit with plastic innect arine and peach trees显示文摘Lish Genard M Bussic 2001Hort Science & Biotecholgy2001,76,1:1
12A z plane Lerner switched -capacitor filter 显示文摘LISH C A 1984IEEE Solid-State Circuits1984,19,6:1
13显示文摘LIYC QIC LISH etal 2010J AmChemSoc2010,132,12:1
14Rotatable-torsion-balance equivelence principle experiment for the spin-polarized HoFe3 显示文摘Hou Lishing Ni Weitou 2001Modern Physics Letters A2001,16,12:1
15Polarizationcharacteristicsofchiralphotoniccrystalfiberswithanellipticalhollowcore显示文摘LiShe LiJunQing CaoYuSheng 2013ChinesePhysB2013,22,11:1
16显示文摘FengL LiSH LiYS 2002AdvMater2002,14,24:1
17Ostholepromotestheproliferationofneuralstemcellsinvitro显示文摘YaoYJ HuY LiSH JiaoYN KongL TaoZY etal 2014中国组织工程研究2014,18,32:1
18Structure and acidity of Mo/ZSM-5 synthesized by solid state reaction for methane dehydrogenation and aromatization显示文摘LiB LiSh J LiN ChenH Y 2005Mi- croporous and Mesoporous Materials2005,88,1:1
19Fluid inclusion evidence for an early,marine-sourced oil charge prior to gas-condensate migration,Bayu-1,Timor Sea,Australia显示文摘George S C Mark Lish Eadington P J 2004Marine and Petroleum Geology2004,21,9:1
20Efficient and conveninent procedures for the formation and cleavage of steroid acetals catalysed by montmorillonite K 10显示文摘Lits Lish Lijt 1996Chinese chemical letters1996,7,11:1
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