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| 1 | Suppression of tumorigenesis by human mesenchymal stem cells in a hepatoma model显示文摘人的间充质的干细胞(hMSCs ) 装家到肿瘤地点并且禁止肿瘤细胞的生长。很少对内在的分子的机制被知道连接 hMSCs 到肿瘤房间的指向的抑制。在这研究,我们从 hMSCs 用一个动物移植模型,一个合作文化系统和调节媒介在二根人的 hepatoma 房间线(H7402 和 HepG2 ) 上调查了 hMSCs 的效果。当 SCID 老鼠与 H7402 细胞和 Z3 hMSCs 的一个相等的数字被注射时,动物移植研究证明肿瘤形成的潜伏的时间被延长并且肿瘤尺寸更小。当 co 有教养时与 Z3 房间, H7402 细胞增殖减少了,增加的 apoptosis,和 Bcl-2 的表示, c-Myc,原子抗原(PCNA ) 和 survivin 低是的增殖的房间调整了。在有调节媒介的处理源于 Z3 hMSC 文化以后, H4702 房间出现了减少的形成殖民地的能力和减少的增长。Immunoblot 分析证明 beta-catenin, Bcl-2, c-Myc, PCNA 和 survivin 表示是在 H7402 和 HepG2 房间调整的 down。总起来说,我们的调查结果证明 hMSCs 禁止 H7402 和 HepG2 人的肝癌症房间线的恶意的显型,它包括增长,形成殖民地的能力和 oncogene 表示试管内和体内。而且,我们的研究提供表明小径的 Wnt 可以在调停 hMSC 的指向和肿瘤房间抑制有一个角色的证据。 | Ling Qiao Zhili Xu Tiejun Zhao Zhigang Zhao Mingxia Shi Robert C Zhao Lihong Ye Xiaodong Zhang | 2008 | Cell Research2008,18,4: | 68 |
| 2 | A Rare Allele of GS2 Enhances Grain Size anc Grain Yield in Rice显示文摘谷物尺寸决定谷物重量并且影响谷物质量。调整谷物尺寸的几主要量的特点 loci (QTL ) 被克隆;然而,我们调整米饭谷物的尺寸的内在的机制的理解仍然保持碎片。这里,我们报导克隆和主导的 QTL 的描述,染色体 2 上的谷物尺寸(GS2 ) 编码调整生长的因素 4,一个 transcriptional 管理者。GS2 本地化到原子核并且可以充当抄写使活跃之物。影响 microRNA 的有约束力的地点的 GS2 的一个稀罕变化, OsmiR396c,原因提高了 GS2/OsGRF4 的表示。GS2 表示的增加导致更大的房间和房间的增加的数字,它因此提高谷物重量和产量。进米饭栽培变种的 GS2/OsGRF4 的这稀罕等位基因的介绍能显著地提高谷物重量和增加谷物产量,用在引起产量很高的米饭变化的可能的应用。 | Jiang Hu Yuexing Wang Yunxia Fang Longjun Zeng Jie Xu Haiping Yu Zhenyuan Shi Jiangjie Pan Dong Zhang Shujing Kang Li Zhu Guojun Dong Longbiao Guo Dali Zeng Guangheng Zhang Lihong Xie Guosheng Xiong Jiayang Li Qian Qian | 2015 | Molecular Plant2015,8,10: | 57 |
| 3 | GRAIN INCOMPLETE FILLING 2 regulates grain filling and starch synthesis during rice caryopsis development显示文摘Rice grain filling determines grain weight,final yield and grain quality.Here,a rice defective grain filling mutant,gif2,was identified.Grains of gif2 showed a slower filling rate and a significant lower final grain weight and yield compared to wild-type.The starch content in gif2 was noticeably decreased and its physicochemical properties were also altered.Moreover,gif2 endosperm cells showed obvious defects in compound granule formation.Positional cloning identified GIF2 to encode an ADP-glucose pyrophosphorylase(AGP) large subunit,AGPL2;consequently,AGP enzyme activity in gif2 endosperms was remarkably decreased.GIF2 is mainly expressed in developing grains and the coded protein localizes in the cytosol.Yeast two hybrid assay showed that GIF2 interacted with AGP small subunits Os AGPS1,Os AGPS2a and Os AGPS2 b.Transcript levels for granule-bound starch synthase,starch synthase,starch branching enzyme and starch debranching enzyme were distinctly elevated in gif2 grains.In addition,the level of nucleotide diversity of the GIF2 locus was extremely low in both cultivated and wild rice.All of these results suggest that GIF2 plays important roles in the regulation of grain filling and starch biosynthesis during caryopsis development,and that it has been preserved during selection throughout domestication of modern rice. | Xiangjin Wei Guiai Jiao Haiyan Lin Zhonghua Sheng Gaoneng Shao Lihong Xie Shaoqing Tang Qingguo Xu Peisong Hu | 2017 | Journal of Integrative Plant Biology2017,59,2: | 20 |
| 4 | Hepatitis B virus X protein promotes liver cell proliferation via a positive cascade loop involving arachidonic acid metabolism and p-ERK1/2显示文摘肝炎 B 病毒 X 蛋白质(HBx ) 在 hepatocellular 癌的发展起一个关键作用。这里,我们寻求了识别 HBx 由调停的机制肝房间增长。我们发现那 HBx upregulated cyclooxygenase-2 (COX-2 ) 的层次, 5-lipoxygenase (5 哈鱼) 和 phosphorylated 在肝房间的细胞外的调整信号的蛋白质 kinases 1/2 (p-ERK1/2 ) 。导致 HBx 的 p-ERK1/2 被 Gi/o 蛋白质,艇长或哈鱼的抑制废除。另外, HBx 增加了前列腺素 E2 (PGE2 ) 的数量,免除房间线的 leukotriene B4 (LTB4 ) 源于 hepatocytes。而且,这些释放 arachidonic 酸代谢物能激活 ERK1/2。有趣地,激活 ERK1/2 能 upregulate 以一种积极反馈方式的 COX-2 和 5 哈鱼的表示。在结论, HBx 经由包含 COX-2, 5 哈鱼,释放 arachidonic 酸代谢物, Gi/o 蛋白质和 p-ERK1/2 的一个积极反馈环提高并且维持肝房间增长。 | Changliang Shan Fuqing Xu Shuai Zhang Jiacong YOU Xiaona You Liyan Qiu Jie Zheng Lihong Ye Xiaodong Zhang | 2010 | Cell Research2010,20,5: | 15 |
| 5 | Quantitative deterministic versus probability analyses based on a safety margin criterion显示文摘This paper proposes a new criterion called the ratio of safety margin(RSM)for use in the areas of the global factor of safety,reliability and limit states analyses with reference to their respective allowable criteria.An equation for calculating RSM based on the reliability index is formulated.Efforts for proving the applicability of this criterion include a theoretical demonstration in a simple one-variable case;an investigation on a test problem involving two random variables,followed by a slope stability study on a 156 m high embankment dam and an illustrative example presented in a EuroCode 7 guidebook.Calculation of the ratios of safety margin in the three areas provides a quantitative way to accommodate the analytical results within the same theoretical framework and makes the outcomes mutually comparable and supportive,which is much more enlightening than that would be the case by considering only one of them.Calculating RSMs for reliability and limit states methods has also helped solve the key issue concerning the uniqueness of the partial factors calibrated from a particular‘target case’. | CHEN ZuYu CHEN LiHong XU JiaCheng SUN Ping WU Chao WANG YuJie | 2014 | Science China(Technological Sciences)2014,57,10: | 12 |
| 6 | Effects of impregnation sequence on the microstructure and performances of Cu-Co based catalysts for the synthesis of higher alcohols显示文摘支持硅石的 CuCo 催化剂被受精方法为更高的白酒合成与不同受精顺序作好准备。这些催化剂被 H 2-TPR, XRD, N 2 吸附, XPS 技术和公司描绘选择加氢反应测量。催化剂的结构和表演上的受精顺序的效果被调查,并且到更高的白酒的选择上有重要影响。为共同使妊娠的样品在铜和钴之间有强壮的 synergistic 效果。合作受精准备的 CuCo/SiO 2 催化剂显示了全部的白酒,和一种更高的选择的更好的收益总计到达了 51.5% 的白酒。 | Siyu Deng Wei Chu Huiyuan Xu Limin Shi Lihong Huang | 2008 | Journal of Natural Gas Chemistry2008,17,4: | 10 |
| 7 | Study on magnetic memory signals of medium carbon steel specimens with surface crack precut during loading process显示文摘Static tensile test and tensile-tensile fatigue test of medium carbon steel sheet specimens with surface crack precut were performed on MTS810 hydraulic testing machine to clear the meaning of the point of Hp(y) value zero. Magnetic memory signals were measured during the test process. The results show that only one point of Hp(y) zero value exists in all measured magnetic signal curves during the loading process, which should be a sign of intersection of positive-negative magnetic poles after magnetic ordered state appears and does not indicate the position of surface crack precut. The analysis shows that the surface crack precut can not interrupt the magnetic ordered state occurred during the test completely, hence its Hp(y) value is not zero. However, the crack extending to a penetrated defect at the instant of specimen′s fracture leads to the discontinuance of magnetic ordered state. | DONG Lihong XU Binshi DONG Shiyun YE Minghui CHEN Qunzhi | 2006 | Rare Metals2006,25,z1: | 9 |
| 8 | Biodegradation of nicosulfuron by a novel Alcaligenes faecalis strain ZWS11显示文摘A bacterial strain ZWS11 was isolated from sulfonylurea herbicide-contaminated farmland soil and identified as a potential nicosulfuron-degrading bacterium. Based on morphological and physicochemical characterization of the bacterium and phylogenetic analysis of the 16 S r RNA sequence, strain ZWS11 was identified as Alcaligenes faecalis. The effects of the initial concentration of nicosulfuron, inoculation volume, and medium p H on degradation of nicosulfuron were investigated. Strain ZWS11 could degrade 80.56% of the initial nicosulfuron supplemented at 500.0 mg/L under the conditions of p H 7.0, 180 r/min and30°C after incubation for 6 days. Strain ZWS11 was also capable of degrading rimsulfuron,tribenuron-methyl and thifensulfuron-methyl. Four metabolites from biodegradation of nicosulfuron were identified, which were 2-aminosulfonyl-N, N-dimethylnicotinamide(M1), 4, 6-dihydroxypyrimidine(M2), 2-amino-4, 6-dimethoxypyrimidine(M3) and2-(1-(4,6-dimethoxy-pyrimidin-2-yl)-ureido)-N,N-dimethyl-nicotinamide(M4). Among the metabolites detected, M2 was reported for the first time. Possible biodegradation pathways of nicosulfuron by strain ZWS11 were proposed. The degradation proceeded mainly via cleavage of the sulfonylurea bridge, O-dealkylation, and contraction of the sulfonylurea bridge by elimination of a sulfur dioxide group. The results provide valuable information for degradation of nicosulfuron in contaminated environments. | Weisong Zhao Chen Wang Li Xu Chunqing Zhao Hongwu Liang Lihong Qiu | 2015 | Journal of Environmental Sciences2015,27,9: | 9 |
| 9 | Changing Forestry Policy by Integrating Water Aspects into Forest/Vegetation Restoration in Dryland Areas in China显示文摘Restoration forestry (forest rehabilitation) or re-vegetation is one effective measure to solve environmental problems, notably soil erosion. It may be further stimulated by the Clean Development Mechanism for carbon sequestration. However, there is an intensive and on-going debate about the adverse effects arising from afforestation in dryland areas, such as soil drying up which may cause further damage to the success of forest restoration, and the water yield reduction from watershed which may harm the regional development. On other hand, some preliminary studies showed a possibility that these adverse effects may be diminished more or less by properly designing the system structure and spatial distribution of forest/vegetation in a watershed. However, it is urgent to develop an evidence-based and sustainable new forestry policy for harmonizing forest-water interrelation. As a leading country in afforestation, China is beginning to develop a more trans-disciplinary and cross-sectoral forestry policy for harmonizing forestry development with water management. The main points of the changing new forestry policy should include: (1) Establishing a regional development strategy focusing on harmonized forest-water relations; (2) Taking forest-water interactions as an important part of evaluation; (3) Reducing the 'eco-water' quota of forests through technical advancement; (4) Developing and extending water-adaptive forest management practices; (5) Strengthening forest ecohydrological research and decision support ability. | WANG Yanhui Mike Bonell Karl-Heinz Feger YU Pengtao XIONG Wei XU Lihong | 2012 | Bulletin of the Chinese Academy of Sciences2012,26,1: | 9 |
| 10 | Effects of morphology and concentration of CuS nanoparticles on alignment and electro-optic properties of nematic liquid crystal显示文摘Nanoparticles (NP ) 与象花并且框架形态学从 CuS 被综合,显著转变金属硫化物。我们介绍了二种 CuS NP 进 nematic 液体晶体(LC ) 4-cyano-4-n-pentylbiphenyl (5CB ) 并且调查了形态学依赖者和集中依赖者排列并且电镀物品眼(E-O ) 在 5CB 上 CuS 完成 NP。象花的 CuS NP 的踪迹数量导致了 LC 分子的一致 homeotropic 取向;这对获得的理想的紧缩的 nanosheet 结构可归因。而且,象花并且框架 CuS NP 在 5CB 的 E-O 性质导致了显著改进,并且象花的 CuS/5CB 系统展出了更好的表演。在 LC 主人的做的 CuS NP 压制了防护效果并且加强了电场,导致突出的 E-O 性质。在 0.05 wt.% 的做的集中, CuS NP 是分散得好的并且完成了最佳 E-O 表演。这研究为由与非凡的 CuS NP 做导致一致取向和 LC 分子的提高的 E-O 性质提供一个新奇方法,导致在建立灵活 LC 显示器的潜在的应用程序。 | Bin Liu Yiran Ma Dongyu Zhao Lihong Xu Fashun Liu Wei Zhou Lin Guo | 2017 | Nano Research2017,10,2: | 9 |
| 11 | Blocking autocrine VEGF signaling by sunitinib, an anti-cancer drug, promotes embryonic stem cell selfrenewal and somatic cell reprogramming显示文摘 | Guofang Chen Xinxiu Xu Lihong Zhang Yanbin Fu Min Wang Haifeng Gu Xin Xie | 2014 | Cell Research2014,24,9: | 8 |
| 12 | Water yield reduction due to forestation in arid mountainous regions, northwest China显示文摘Forestation has been encouraged worldwide due to increasing demand for forest products, and for its ecological benefits such as soil erosion control and sediment reduction. However, forestation reduces runoff, thus potentially aggravating water shortages in arid regions. In order to quantitatively estimate the possible water yield reductions caused by forestation in an arid region, a small watershed (the Pailugou watershed) in the Qilian Mountains of northwest China was chosen as a study area. The responses of hydrological dynamics to different forestation scenarios in the study area were simulated using the TOPOG model. The results showed that forestation could lead to a complete loss of runoff at the site scale. At the watershed scale, a 10% increase in forest coverage led to a runoff reduction of 25.6 mm, equivalent to 13% of the runoffin the un-forested watershed. However, due to climatological and topographical constraints, the potential forest distribution occupied only 46.3% of the watershed area, and runoff reduction was estimated to reach a maximum of 60% when the forest cover ratio increased from 0.41% to 46.1%. Actual forest coverage is 36% in the study area, thus the water yield will be reduced with any further increase in forest area. Our study suggested that a trade-off between the numerous benefits of forest coverage increase and its negative impact on water yield should be carefully addressed in arid regions with inherently severe water-shortage. | Pengtao YU Yanhui WANG Xudong WU Xiaohong DONG Wei XIONG Gaowa BU Shunli WANG Jinye WANG Xiande LIU Lihong XU | 2010 | International Journal of Sediment Research2010,25,4: | 7 |
| 13 | Basin assemblages and tectonic evolution in the Bohai Gulfand its neighbors显示文摘According to multi- disciplinary research advances in recent years, three blocks which named Jiaoliao - Bohai block, central North China block and Ordos block are divided. The differences of the tectonic association, types, styles and features in the space, and evolution from Archaean to Cenozoic in the time, between the former two blocks are discussed. Tectonic features and evolution in the four tectonic stages of Precambrian, Indo- China, Yanshanian and Cenozoic are emphasized especially here. All of them described above have inherit and neogenic property. The temporal-spatial change and interaction among basin assemblages in the above four stages are analyzed. Escape tectonic model is employed to interpret coeval compressive and extensional basins in the study area. | Li Sanzhong Xu Shumei Shan Yehua Li Xishuang Zhou Lihong Hao Yinquan Fan Zheqing Liang Huilan | 2000 | Acta Oceanologica Sinica2000,19,4: | 7 |
| 14 | Prehistoric agriculture development in the Yunnan-Guizhou Plateau, southwest China: Archaeobotanical evidence显示文摘The origin, development and expansion of prehistoric agriculture in East Asia have been widely investigated over the past two decades using archaeobotanical analysis from excavated Neolithic and Bronze Age sites. Research on prehistoric agriculture has predominantly focused in the valleys of the Yellow River and the Yangtze River. Agricultural development during the Neolithic and Bronze Age periods in the Yunnan-Guizhou Plateau of southwest China, an important passageway for human migration into Southeast Asia, still remains unclear. In this paper, based on macrofossil and microfossil analysis and radiocarbon dating at the Shilinggang site, we investigate plant subsistence strategies in the Nujiang River valley during the Bronze Age period. Combined with previous archaeobotanical studies in the Yunnan-Guizhou Plateau, we explore agricultural development processes in this area during the Neolithic and Bronze Age. Our results indicate that rice and foxtail millet were cultivated in Shilinggang around 2500 cal a BP. Three phases of prehistoric agricultural development in the Yunnan-Guizhou Plateau can be identified: rice cultivation from 4800–3900 cal a BP, mixed rice and millet crop(foxtail millet and broomcorn millet) cultivation from 3900–3400 cal a BP, and mixed rice, millet crop and wheat cultivation from 3400–2300 cal a BP. The development of agriculture in the Yunnan-Guizhou Plateau during the Neolithic and Bronze Age periods was primarily promoted by prehistoric agriculture expansion across Eurasia, agricultural expansion which was also affected by the topographic and hydrological characteristics of the area. | LI HaiMing ZUO XinXin KANG LiHong REN LeLe LIU FengWen LIU HongGao ZHANG NaiMeng MIN Rui LIU Xu DONG GuangHui | 2016 | Science China Earth Sciences2016,59,8: | 6 |
| 15 | Melatonin enhances radiofrequency-induced NK antitumor immunity,causing cancer metabolism reprogramming and inhibition of multiple pulmonary tumor development显示文摘Surgery is the comm on treatme nt for early lung cancer with multiple pulm onary no dules,but it is often accompanied by the problem of significant malignancy of other nodules in non-therapeutic areas.In this study,we found that a combined treatment of local rad iofreq ue ncy ablati on(RFA)and melatonin(MLT)greatly improved clinical outcomes for early lung cancer patie nts with multiple pulmonary nodules by minimizing lung function injury and reducing the probability of malignant transformation or enlargement of nodules in non-ablated areas.Mechanically,as demonstrated in an associated mouse lung tumor model,RFA not only effectively remove treated tumors but also stimulate antitumor immunity,which could inhibit tumor growth in non-ablated areas.MLT enhanced RFA-stimulated NK activity and exerted synergistic antitumor effects with RFA.Transcriptomics and proteomics analyses of residual tumor tissues revealed enhanced oxidative phosphorylation and reduced acidification as well as hypoxia in the tumor microenvironment,which suggests reprogrammed tumor metabolism after combined treatment with RFA and MLT.Analysis of residual tumor further revealed the depressed activity of MAPK,NF-kappa B,Wnt,and Hedgehog pathways and upregulated P53 pathway in tumors,which was in line with the inhibited tumor growth.Combined RFA and MLT treatment also reversed the Warburg effect and decreased tumor malignancy.These findings thus demonstrated that combined treatment of RFA and MLT effectively inhibited the malignancy of non-ablated nodules and provided an innovative non-invasive strategy for treating early lung tumors with multiple pulmonary nodules.Trial registration:www.chictr.org.cn,identifier ChiCTR2100042695,http://www.chictr.org.cn/showproj.aspx?proj=120931. | Ming Li Bingjie Hao Menghuan Zhang Russel J.Reiter Shumeng Lin Tiansheng Zheng Xiangyun Chen Yanbei Ren Liduo Yue Baigenzhin Abay Guojie Chen Xiao Xu Yufeng Shi Lihong Fan | 2021 | Signal Transduction and Targeted Therapy2021,6,10: | 6 |
| 16 | Oligomeric proanthocyanidin protects retinal ganglion cells against oxidative stress-induced apoptosis显示文摘The death of retinal ganglion cells is a hallmark of many optic neurodegenerative diseases such as glaucoma and retinopathy.Oxidative stress is one of the major reasons to cause the cell death Oligomeric proanthocyanidin has many health beneficial effects including antioxidative and neuroprotective actions.Here we tested whether oligomeric proanthocyanidin may protect retina ganglion cells against oxidative stress induced-apoptosis in vitro.Retinal ganglion cells were treated with hydrogen peroxide with or without oligomeric proanthocyanidin3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT)assay showed that treating retinal ganglion cell line RGC-5 cells with 20μmol/L oligomeric proanthocyanidin significantly decreased the hydrogen peroxide(H2O2)induced death.Results of flow cytometry and Hoechst staining demonstrated that the death of RGC-5 cells was mainly caused by cell apoptosis.We further found that expression of pro-apoptotic Bax and caspase-3 were significantly decreased while anti-apoptotic Bcl-2 was greatly increased in H2O2damaged RGC-5 cells with oligomeric proanthocyanidin by western blot assay.Furthermore,in retinal explant culture,the number of surviving retinal ganglion cells in H2O2-damaged retinal ganglion cells with oligomeric proanthocyanidin was significantly increased.Our studies thus demonstrate that oligomeric proanthocyanidin can protect oxidative stress-injured retinal ganglion cells by inhibiting apoptotic process. | Hui Wang Chanjuan Zhang Dan Lu Xiaoming Shu Lihong Zhu Renbing Qi Kwok-Fai So Daxiang Lu Ying Xu | 2013 | Neural Regeneration Research2013,8,25: | 5 |
| 17 | Preparation of CeO_2-Modified Mg(Al)O-Supported Pt–Cu Alloy Catalysts Derived from Hydrotalcite-Like Precursors and Their Catalytic Behavior for Direct Dehydrogenation of Propane显示文摘A series of PtCuCeMgAl quintuple hydrotalcite-like compounds with different Ce contents were synthesized by one-pot method. After calcining and reduction, CeO_2-modified Mg(Al)O-supported Pt–Cu alloy catalysts were obtained. To understand the effect of Cu and Ce, the structure and physico-chemistry properties of the catalysts were characterized and analyzed, and the catalytic behaviors were investigated in a direct dehydrogenation of propane to propene. The results show that the Pt^(4+), Cu^(2+), and Ce^(3+) ions can be incorporated into the brucite-like layers and the Ce content significantly affects the interaction strength between Pt and Cu and the dehydrogenation performance of propane. Under the reaction conditions, the highest propane conversion(45%) with 89% selectivity to propene and a 40% propene yield were achieved with a 0.3 wt% Ce-modified PtCu/Mg(Al)O catalyst. The improved catalytic performance is related to the easy formation of Pt–Cu alloy phase, excellent resistance to sintering, and coke deposits of active components modified by CeO_2. | Yingxia Li Jiaxin Li Xiao Yang Xitao Wang Yanhong Xu Lihong Zhang | 2019 | Transactions of Tianjin University2019,25,2: | 5 |
| 18 | Expert consensus on early childhood caries management显示文摘Early childhood caries(ECC)is a significant chronic disease of childhood and a rising public health burden worldwide.ECC may cause a higher risk of new caries lesions in both primary and permanent dentition,affecting lifelong oral health.The occurrence of ECC has been closely related to the core microbiome change in the oral cavity,which may be influenced by diet habits,oral health management,fluoride use,and dental manipulations.So,it is essential to improve parental oral health and awareness of health care,to establish a dental home at the early stage of childhood,and make an individualized caries management plan.Dental interventions according to the minimally invasive concept should be carried out to treat dental caries.This expert consensus mainly discusses the etiology of ECC,caries-risk assessment of children,prevention and treatment plan of ECC,aiming to achieve lifelong oral health. | Jing Zou Qin Du Lihong Ge Jun Wang Xiaojing Wang Yuqing Li Guangtai Song Wei Zhao Xu Chen Beizhan Jiang Yufeng Mei Yang Huang Shuli Deng Hongmei Zhang Yanhong Li Xuedong Zhou | 2022 | International Journal of Oral Science2022,14,3: | 5 |
| 19 | Electrolyte solvation chemistry for lithium-sulfur batteries with electrolyte-lean conditions显示文摘Lithium-sulfur(Li-S)batteries possess overwhelming energy density of 2654 Wh kg-1,and are considered as the next-generation battery technology for energy demanding applications.Flooded electrolytes are ubiquitously employed in cells to ensure sufficient redox kinetics and preclude the interference of the electrolyte depletion due to side reactions with the lithium metal anode.This strategy is capable of enabling long-lasting,high-capacity and excellent-rate battery performances,but it mask the requirements of practical Li-S batteries,where high-sulfur-loading/content and lean electrolyte are prerequisite to realize the energy-dense Li-S batteries.Sparingly and highly solvating electrolytes have emerged as effective yet simple approaches to decrease the electrolyte/sulfur ratio through altering sulfur species and exerting new reaction pathways.Sparingly solvating electrolytes are characterized by few free solvents to solvate lithium polysulfides,rendering a quasi-solid sulfur conversion and decoupling the reaction mechanisms from electrolyte quantity used in cells;while highly solvating electrolytes adopt highdonicity or high-permittivity solvents and take their advantages of strong solvation ability toward polysulfide intermediates,thereby favoring the polysulfide formation and stabilizing unique radicals,which subsequently accelerate redox kinetics.Both solvation chemistry approaches have their respective features to allow the operation of cells under electrolyte-starved conditions.This Review discusses their unique features and basic physicochemical properties in the working Li-S batteries,presents remaining technical and scientific issues and provides future directions for the electrolyte chemistry to attain highenergy Li-S batteries. | Long Kong Lihong Yin Fei Xu Juncao Bian Huimin Yuan Zhouguang Lu Yusheng Zhao | 2021 | Journal of Energy Chemistry2021,30,4: | 5 |
| 20 | Theories,technologies and practices of lacustrine shale oil exploration and development:A case study of Paleogene Kongdian Formation in Cangdong sag,Bohai Bay Basin,China显示文摘As the main factors affecting stable and high production and the production regularity of lacustrine shale oil are unclear,the theoretical understandings,key exploration and development technologies,development effect and production regularity of lacustrine shale oil have been analyzed and summarized based on 700 m cores taken systematically from Paleogene Kong 2 Member of 4 wells in Cangdong sag,over 100000 analysis data and formation testing data.Three theoretical understandings on shale oil enrichment and high production have been reached:(1)High-quality shale with“three highs and one low”is the material base for shale oil enrichment.(2)Medium-slightly high thermal evolution degree is the favorable condition for shale oil enrichment.(3)Laminar felsic shale is the optimal shale layer for oil enrichment in semi-deep lake facies.Key exploration and development technologies such as shale oil enrichment layer and area evaluation and prediction,horizontal well pattern layout,shale oil reservoir fracturing,optimization of shale oil production regime have been established to support high and stable shale oil production.Under the guidance of these theoretical understandings and technologies,shale oil in Cangdong sag has achieved high and stable production,and 4 of them had the highest production of over 100 tons a day during formation testing.In particular,Well GY5-1-1 L had a daily oil production of 208 m^(3).By April,2022,the 28 wells combined have a stable oil production of 300–350 tons a day,and have produced 17.8×10^(4) t of oil cumulatively.It is found that the shale oil production of horizontal well declines exponentially in natural flow stage,and declines in step pattern and then tends stable in the artificial lift stage.Proportion of light hydrocarbons in produced shale oil is in positive correlation with daily oil production and decreases regularly during production test. | ZHAO Xianzheng ZHOU Lihong PU Xiugang JIN Fengming HAN Wenzhong SHI Zhannan CHEN Changwei JIANG Wenya GUAN Quansheng XU Jing LIU Xuewei ZHANG Wei MA Jianying | 2022 | Petroleum Exploration and Development2022,49,3: | 4 |