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| 1 | Distribution and Geochemical Characteristics of Hydrogen in Natural Gas from the Jiyang Depression, Eastern China显示文摘Hydrogen gas accelerates hydrocarbon generation, but little is known about its distribution and origin in petroliferous basins, which has hindered the further exploration.Taken the Jiyang Depression in eastern China as an example, this study collected natural gas from different tectonic units, and analyzed various geochemical characters including gas contents, and carbon and hydrogen isotopic composition.The result shows that:(1) hydrogen gas is widespread distributed, but its content is very low, which typically ranges from 0.01% to 0.1% in this region;(2) the ratios of H2/3He, indicative of the origins of hydrogen gas, suggest that mantle-derived hydrogen is dominant.Even in tectonically stable areas absent with deep fluid activities, there is also mantle-derived;(3) the isotopic composition of hydrogen falls in the range of –798‰ to –628‰(relative to VSMOW standard).In areas with deep-derived fluids, the hydrogen gas has a similar isotopic composition with the previously documented deep-sourced gas, with lighter isotopic composition.In contrast, hydrogen gas has a heavier isotopic composition in relatively stable areas.The isotopic signatures suggest that there is a mixture of mantle- and crust-derived hydrogen gas in the relatively stable area, which is consistent with the H2/3He ratios.Therefore, it is clear that the hydrogen gas has a much wider distribution than found in the deep-derived fluid area, resulting in a much broader area with hydrogenating effect for resource rock.This understanding will provide new insights for hydrocarbon generation research and resource assessment in petroliferous basins. | MENG Qingqiang SUN Yuhua TONG Jianyu FU Qi ZHU Jun ZHU Dongya JIN Zhijun | 2015 | Acta Geologica Sinica(English Edition)2015，89，5： | 5 |
| 2 | Enhanced ozonation degradation of atrazine in the presence of nano-ZnO: Performance, kinetics and effects显示文摘Enhanced ozonation degradation of atrazine(ATZ) with nano-ZnO(nZnO) as catalyst and the influences of the operational parameters have been investigated through semi-continuous experiments in this study. The results demonstrated that the combination of ozone(O_3) and nZnO showed an obvious synergetic effect and the ATZ degradation conformed to pseudo-first-order kinetics. An improvement of ATZ degradation efficiency by 41.8% and pseudo-first-order rate constant by more than a factor of four was obtained in the O_3/nZnO process after 5 min of reaction compared to O_3 alone. Meanwhile, the degradation efficiency of ATZ was gradually enhanced with increasing nZnO dosage and initial pH in the range from 3.0 to 8.0, and a higher amount of ATZ was degraded when the initial concentration of ATZ rose from 0.5 to 5 mg/L. Additionally, sulfate ion, chloride ion, nitrate ion and low concentrations of humic acid substances led to enhancement of the ATZ degradation. The notable decrease of ATZ removal efficiency observed in the presence of radical scavengers and the results of free radical tests indicated thatUOH is the dominant active radical species. The mechanism investigation demonstrated that the enhancement effect could be attributed to the introduction of nZnO,which could promote the utilization of O_3, enhance the formation of superoxide radical, and further accelerate the production of hydrogen peroxide and the generation of OH/O_2^-. | Xiangjuan Yuan Xuan Yan Haiming Xu Dongya Li Lei Sun Gang Cao Dongsheng Xia | 2017 | Journal of Environmental Sciences2017，29，11： | 4 |
| 3 | Organic-rich formation and hydrocarbon enrichment of lacustrine shale strata:A case study of Chang 7 Member显示文摘Lacustrine shale is an important target for the exploration of unconventional oil and gas in China beyond marine shale gas.However,the formation environment of lacustrine shale differs from that of marine shale,resulting in a different reservoir composition,organic matter,oil and gas content,and hydrocarbon mobility.In this study,the Chang 7 shale of the Yanchang Formation in the Ordos Basin was used to analyze the effect of volcanic activity on the paleoproductivity and preservation conditions during the formation of lacustrine shale.The results show that algae and bacteria were developed before the eruption.After the eruption,the number of bacteria declined,but the increased prosperity of algae reflects that the volcanic activity enhanced ancient productivity.The sulfate generated by volcanic activity promotes bacterial sulfate reduction,and the produced H_(2)S leads to a strong reducing environment in the waterbody,which is conducive to the preservation of organic matter.Organic geochemical analysis shows that the black shale in the shale strata has a high total organic carbon(TOC)content and strong hydrocarbon generation potential,whereas the tuff has a low TOC content and can scarcely generate hydrocarbons,indicating that the tuff deposited by volcanic activity cannot be considered as effective source rock.In terms of storage space,shale is mainly laminar and dispersed,and it includes organic and inorganic pores.The development of organic pores is affected by thermal maturity,whereas inorganic pores mainly occur between detrital particles and crystals.Tuff is mainly supported by heterogeneous matrix and associated with alteration.Its pores include inter-and intragranular mineral pores.The development of tight sandstone pores is affected by compaction,cementation,and dissolution,which mainly consist of intra-and intergranular pores.The Chang 7 lacustrine shale generally contains oil,but different lithologies have different oil drainage efficiencies.Sandstone and shale exhibit the best and worst oil drainage efficiency,respectively.It is mainly affected by the pore size distribution,fluid properties,and rock wettability.Therefore,the development of shale oil should mainly focus on lacustrine shale formations with interbeds.The mutual dissolution of organic matter and hydrocarbons in the shale section leads to the poor mobility and difficult development of hydrocarbons. | Quanyou LIU Peng LI Zhijun JIN Yuewu SUN Guang HU Dongya ZHU Zhenkai HUANG Xinping LIANG Rui ZHANG Jiayi LIU | 2022 | Science China Earth Sciences2022，65，1： | 2 |
| 4 | Prepara- tion of biodiesel from soybean oil catalyzed by Al-Ca hydrotal- cite loaded with K2CO3 as heterogeneous solid base catalyst 显示文摘 | Sun Chuanjia Qiu Fengxian Yang Dongya | 2014 | Fuel Process Technol2014，126，5： | 1 |
| 5 | HIF-1-Mediated Suppression of Acyl-CoA Dehydrogenases and Fatty Acid Oxidation Is Critical for Cancer Progression显示文摘 | De Huang Tingting Li Xinghua Li Long Zhang Linchong Sun Xiaoping He Xiuying Zhong Dongya Jia Libing Song Gregg L. Semenza Ping Gao Huafeng Zhang | 2014 | Cell Reports2014，，6： | 1 |
| 6 | Population genomic analysis reveals domestication of cultivated rye from weedy rye显示文摘Rye(Secale cereale)is an important crop with multiple uses and a valuable genetic resource for wheat breeding.However,due to its complex genome and outcrossing nature,the origin of cultivated rye remains elusive.The geneticist N.I.Vavilov proposed that cultivated rye had been domesticated from weedy rye,rather than directly from wild species like other crops.Unraveling the domestication history of rye will extend our understanding of crop evolution and upend our inherent understanding of agricultural weeds.To this end,in this study we generated the 8.5 Tb of whole-genome resequencing data from 116 worldwide accessions of wild,weedy,and cultivated rye,and demonstrated that cultivated rye was domesticated directly from weedy relatives with a similar but enhanced genomic selection by humans.We found that a repertoire of genes that experienced artificial selection is associated with important agronomic traits,including shattering,grain yield,and disease resistance.Furthermore,we identified a composite introgression in cultivated rye from the wild perennial Secale strictum and detected a 2-Mb introgressed fragment containing a candidate ammonium transporter gene with potential effect on the grain yield and plant growth of rye.Taken together,our findings unravel the domestication history of cultivated rye,suggest that interspecific introgression serves as one of the likely causes of obscure species taxonomy of the genus Secale,and provide an important resource for future rye and wheat breeding. | Yanqing Sun Enhui Shen Yiyu Hu Dongya Wu Yu Feng Sangting Lao Chenfeng Dong Tianyu Du Wei Hua Chu-Yu Ye Jinhuan Zhu Qian-Hao Zhu Daguang Cai Lidia Skuza Jie Qiu Longjiang Fan | 2022 | Molecular Plant2022，15，3： | 1 |
| 7 | Weedy rice, a hidden gold mine in the paddy field显示文摘Weedy rice(Oryza spp.)is an increasingly invasive paddy weed,which mimics cultivated rice at the seedling stage but is distinguished from cultivated rice with strong seed shattering and seed dormancy,which are typical phenotypic characteristics of wild rice.On the origins of this conspecific form of cultivated rice(Oryza sativa),four hypotheses have been proposed and debated for decades:(1)origination from wild rice(Oryza rufipogon or possibly other wild Oryza species);(2)origination following hybridization between wild and cultivated rice;(3)direct descent from escaped cultivated rice;and(4)intervarietal hybridization between different domesticated rice varieties(Ellstrand et al.,2010).Recent population genomic investigations based on whole-genome variation provide powerful phylogenetic and demographic evidence for the de-domestication origination of weedy rice(Li et al.,2017;Qiu et al.,2017,Qiu et al.,2020;Sun et al.,2019). | Dongya Wu Jie Qiu Jian Sun Beng-Kah Song Kenneth M.Olsen Longjiang Fan | 2022 | Molecular Plant2022，15，4： | 0 |
| 8 | Response of Flash Flood Early Warning Critical Rainfall to Storm Pattern in South Branch of Censhui Watershed显示文摘 | Changzhi Li Baozhao Yuan Miao Zhang Changjun Liu Dongya Sun | 2015 | Journal of Environmental Science and Engineering(B)2015，4，12： | 0 |
| 9 | Glutamate-releasing BEST1 channel is a new target for neuroprotection against ischemic stroke with wide time window显示文摘Many efforts have been made to understand excitotoxicity and develop neuroprotectants for the therapy of ischemic stroke.The narrow treatment time window is still to be solved.Given that the ischemic core expanded over days,treatment with an extended time window is anticipated.Bestrophin1(BEST1)belongs to a bestrophin family of calcium-activated chloride channels.We revealed an increase in neuronal BEST1 expression and function within the peri-infarct from 8 to 48 h after ischemic stroke in mice.Interfering the protein expression or inhibiting the channel function of BEST1 by genetic manipulation displayed neuroprotective effects and improved motor functional deficits.Using electrophysiological recordings,we demonstrated that extrasynaptic glutamate release through BEST1 channel resulted in delayed excitotoxicity.Finally,we confirmed the therapeutic efficacy of pharmacological inhibition of BEST1 during 6—72 h post-ischemia in rodents.This delayed treatment prevented the expansion of infarct volume and the exacerbation of neurological functions.Our study identifies the glutamatereleasing BEST1 channel as a potential therapeutic target against ischemic stroke with a wide time window. | Shuai Xiong Hui Xiao Meng Sun Yunjie Liu Ling Gao Ke Xu Haiying Liang Nan Jiang Yuhui Lin Lei Chang Haiyin Wu Dongya Zhu Chunxia Luo | 2023 | Acta Pharmaceutica Sinica B2023，13，7： | 0 |
| 10 | Critical Rainfall Analysis on Flash Flood Early Warning for South Branch of Censhui Watershed显示文摘 | Changzhi Li Hong Wang Xiaotao Cheng Baozhao Yuan Meihong Ma Changiun Liu Dongya Sun | 2016 | Journal of Hydraulic Engineering2016，2，1： | 0 |
| 11 | Uncertainty on Design Critical Rainfall for Flash Flood Early Warning:A Case Study of South Branch Watershed of Censhui显示文摘Critical rainfall estimation for early warning of rainstorm-induced flash flood is an inverse rainstorm-runoff process based on warning discharge threshold for a warning station of interest in a watershed; the key aspects of critical rainfall include rainfall amount and rainfall duration. Antecedent moisture content and storm pattern affects highly the estimation of critical rainfall. Using hydrological modeling technique with detailed subbasin delineation and manual for design rainstorm-runoff computation,this study first introduced basic concept and analysis methods on critical rainfall for flash flood early warning,and then investigated the responses of flash flood warning critical rainfall to antecedent moisture content and storm pattern. Taking South Branch Watershed of Censhui in Hunan Province as an example,critical rainfall in scenarios of typical antecedent moisture content and storm patterns was estimated at 3 warning stations of interest in this watershed. This research illustrates that both antecedent and storm pattern play important role in the estimation of critical rainfall and enough attention should also be paid to these factors when a decision to be made on whether a warning to be issued or not. | Li Changzhi Zhang Xiaolei Zhang Miao Sun Dongya Guo Liang | 2019 | Meteorological and Environmental Research2019，10，1： | 0 |
| 12 | Effects of Erosion Control Measures on Mountain Floods: A Case Study of the Censhui River South Branch Watershed显示文摘 | Changzhi Li Hong Wang Baozhao Yuan Dongya Sun Changjun Liu | 2015 | Journal of Agricultural Science and Technology(A)2015，5，8： | 0 |
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