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| 1 | Diamonds and Other Exotic Minerals Recovered from Peridotites of the Dangqiong Ophiolite, Western Yarlung-Zangbo Suture Zone, Tibet显示文摘Various combinations of diamond, moissanite, zircon, quartz, corundum, rutile, titanite, almandine garnet, kyanite, and andalusite have been recovered from the Dangqiong peridotites. More than 80 grains of diamond have been recovered, most of which are pale yellow to reddish-orange to colorless. The grains are all 100-200 μm in size and mostly anhedral, but with a range of morphologies including elongated, octahedral and subhedral varieties. Their identification was confirmed by a characteristic shift in the Raman spectra between 1325 cm^(-1) and 1333 cm^(-1), mostly at 1331.51 cm^(-1) or 1326.96 cm^(-1). Integration of the mineralogical, petrological and geochemical data for the Dongqiong peridotites suggests a multi-stage formation for this body and similar ophiolites in the Yarlung-Zangbo suture zone. Chromian spinel grains and perhaps small bodies of chromitite crystallized at various depths in the upper mantle, and encapsulated the UHP, highly reduced and crustal minerals. Some oceanic crustal slabs containing the chromian spinel and their inclusion were later trapped in suprasubduction zones(SSZ), where they were modified by island arc tholeiitic and boninitic magmas, thus changing the chromian spinel compositions and depositing chromitite ores in melt channels. | XIONG Fahui YANG Jingsui ROBINSON Paul T. XU Xiangzhen BA Dengzhu LI Yuan ZHANG Zhongming RONG He | 2016 | Acta Geologica Sinica(English Edition)2016,90,2: | 20 |
| 2 | Diamonds Discovered from High–Cr Podiform Chromitites of Bulqiza,Eastern Mirdita Ophiolite,Albania显示文摘Various combinations of diamond, moissanite, zircon, corundum, rutile and titanitehave been recovered from the Bulqiza chromitites. More than 10 grains of diamond have been recovered, most of which are pale yellow to reddish–orange to colorless. The grains are all 100–300 μm in size and mostly anhedral, but with a range of morphologies including elongated, octahedral and subhedral varieties. Their identification was confirmed by a characteristic shift in the Raman spectra between 1325 cm^(-1) and 1333 cm^(-1), mostly at 1331.51 cm^(-1) or 1326.96 cm^(-1). This investigation extends the occurrence of diamond and moissanite to the Bulqiza chromitites in the Eastern Mirdita Ophiolite. Integration of the mineralogical, petrological and geochemical data of the Bulqiza chromitites suggests their multi–stage formation. Magnesiochromite grains and perhaps small bodies of chromitite formed at various depths in the upper mantle, and encapsulated the ultra–high pressure, highly reduced and crustal minerals. Some oceanic crustal slabs containing the magnesiochromite and their inclusion were later trapped in suprasubduction zones, where they were modified by tholeiitic and boninitic arc magmas, thus changing the magnesiochromite compositions and depositing chromitite ores in melt channels. | XIONG Fahui YANG Jingsui ROBINSON Paul T. DILEK Yildirim MILUSHI Ibrahim XU Xiangzhen ZHOU Wenda ZHANG Zhongming RONG He | 2017 | Acta Geologica Sinica(English Edition)2017,91,2: | 9 |
| 3 | Growth and physiological effects of chitosan on heat tolerance in creeping bentgrass (Agrostis stolonifera)显示文摘High temperature is one of the major abiotic stresses limiting growth and development of cool-season grass species,but chitosan could effectively enhance heat tolerance and improve plant growth.The objective of this study was to determine the optimal concentration of chitosan that could alleviate heat stress in creeping bentgrass(Agrostis stolonifera)and investigate the effects of exogenous chitosan on photosynthesis and cell membrane stability under heat stress.Under heat stress(38/28°C,day/night),different chitosan concentrations of 0,50,100 and 500 mg·L−1 were applied on the leaves of creeping bentgrass(cv.'Penn-A4').Foliar application of chitosan exhibited the positive effects on plant growth and the optimal concentration was 100 mg·L−1 which significantly improved turf quality,root length,root-shoot ratio as well as shoot and root biomass.Chitosan-treated plants subjected to high temperature stress had a lower decline in photosynthetic rate and photochemical efficiency as well as less increase in electrolyte leakage and malondialdehyde content.The results demonstrate that chitosan-improved heat tolerance as reflected by the superior growth performance of both shoot and root,photosynthesis and cell membrane stability in creeping bentgrass under heat stress. | Qiuguo Li Ruonan Li Fahui He Zhimin Yang Jingjin Yu | 2022 | Grass Research2022,2,1: | 0 |
| 4 | Diamond Discovered in Dangqiong Ophiolite, Western Yarlung-Zangbu Suture Zone, Tibet显示文摘The first diamonds from ophiolite were found in peridotite of Luobusa ophiolite along Yarlung Zangbu suture zone in Tibet,China(IGCAGS,1981),and then more and more diamonds found in harzgurgite(Bai et al.,1993;Yang et al.,2007a;Robinson et al.,2014;Xu et al., | XIONG Fahui YANG Jingsui Robinson T.PAUL XU Xiangzhen BA Dengzhu LI Yuan LI Jinyang ZHANG Zhongming RONG He | 2015 | Acta Geologica Sinica(English Edition)2015,89,A02: | 0 |
| 5 | Reform and Practice of Art Courses in Agricultural Universities and Colleges:A Case Study of Flower Art of Tianjin Agricultural University显示文摘Taking the flower art major in Tianjin Agricultural University as an example,the paper discusses and practices series courses of flower art in agricultural universities and colleges,strengthens the integration of courses and highlights the characteristics.The teaching quality of flower art series courses has been significantly improved by optimizing high-level teaching team,constructing scientific course system,improving teaching methods and teaching means,using network teaching platform to assist teaching,compiling high-quality teaching materials and implementing whole process assessment mode. | LIU Yi LIANG Fahui LIU Hairong SHI Yanyu LIU Huiqin HE Xingye | 2023 | Journal of Landscape Research2023,15,1: | 0 |