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| 1 | Hydrothermal pretreatment of rice straw at relatively lower temperature to improve biogas production vict anaerobic digestion显示文摘Although the degradation mechanism of straw anaerobic digestion is still obscure,lower temperature thermop hysical pretreatment might be a feasible way to improve biogas fermentation efficiency and net energy production in whole slurry.In this study,the performances of rice straw(RS)degradation and biogas production were examined at different pretreatment temperatures from 90 ℃ to 130℃ to identify the optimal process.With increasing pretreatment temperature,the change in cellulose and hemicellulose degradation in all the tests was directly related to volatile fatty acids(VFAs)content,but did not correspond to the variation in cumulative methane production.Both 100℃ and 130℃presented similar ideal digestion performances with highest methane yields of 127.6 and 124.6 mL/g TS,respectively,which were 22.80%and 19.83%higher than that noted in the control.Although test at 100 ℃pretreatment,which achieved 12.8%higher net energy production from RS than that observed in the control,could be considered as the optimal choice,the surplus biogas could only meet 75.9%of energy requirement for pretreated water temperature shift.Nevertheless,mesophilic or thermophilic fermentation,lower pretreatment water input,and reuse of excess heat are recommended as feasible working conditions for improving net biogas production. | Tao Luo Hailong Huang Zili Mei Fei Shen Yihong Ge Guoquan Hu Xi Meng | 2019 | Chinese Chemical Letters2019，30，6： | 1 |
| 2 | O-GlcNAcylation Coordinates Glutaminolysis by Regulating the Stability and Membrane Trafficking of ASCT2 in Hepatic Stellate Cells显示文摘Background and Aims:Recognition of excessive activa-tion of hepatic stellate cells(HSCs)in liver fibrosis prompt-ed us to investigate the regulatory mechanisms of HSCs.We aimed to examine the role of O-GlcNAcylation modifica-tion of alanine,serine,cysteine transporter 2(ASCT2)in HSCs and liver fibrosis.Methods:The expression of O-Glc-NAcylation modification in fibrotic mice livers and activated HSCs was analyzed by western blotting.Immunoprecipita-tion was used to assess the interaction of ASCT2 and O-Glc-NAc transferase(OGT).In addition,ASCT2 protein stability was assayed after cycloheximide(CHX)treatment.The O-GlcNAcylation site of ASCT2 was predicted and mutated by site-directed mutagenesis.Real-time PCR,immunofluores-cence,kit determinations and Seahorse assays were used to clarify the effect of ASCT2 O-GlcNAcylation on HSC glu-taminolysis and HSC activation.Western blotting,immuno-chemistry,and immunohistofluorescence were used to ana-lyze the effect of ASCT2 O-GlcNAcylation in vivo.Results:We observed significantly increased O-GlcNAcylation modi-fication of ASCT2.ASCT2 was found to interact with OGT to regulate ASCT2 stability.We predicted and confirmed that O-GlcNAcylation of ASCT2 at Thr122 site resulted in HSCs activation.We found Thr122 O-GlcNAcylation of ASCT2 me-diated membrane trafficking of glutamine transport and attenuated HSC glutaminolysis.Finally,we validated the expression and function of ASCT2 O-GlcNAcylation after in-jection of AAV8-ASCT2 shRNA in CCl4-induced liver fibrosis mice in vivo.Conclusions:Thr122 O-GlcNAcylation regu-lation of ASCT2 resulted in stability and membrane traf-ficking-mediated glutaminolysis in HSCs and liver fibrosis.Further studies are required to assess its role as a putative therapeutic target. | Feixia Wang Li Chen Biyun Zhang Zhanghao Li Min Shen Li Tang Zili Zhang Jiangjuan Shao Feng Zhang Shizhong Zheng Shanzhong Tan | 2022 | Journal of Clinical and Translational Hepatology2022，10，6： | 0 |
| 3 | Monthly prediction of tropical cyclone activity over the South China Sea using the FGOALS-f2 ensemble prediction system显示文摘本研究基于新一代FGOALS-f2动力集合预测系统35年(1981–2015年)的热带气旋历史回报试验对南海台风季(7–11月)热带气旋活动超前10天的月预测技巧进行评估,并对2020年南海台风季热带气旋活动进行了实时月预测尝试.结果表明:FGOALS-f2能较好地预测南海热带气旋路径密度演变特征,预测的热带气旋生成个数与实际观测结果的相关系数在0.2–0.6之间.2020年实时预测方面,FGOALS-f2较为准确地给出了南海台风季热带气旋生成位置与移动路径的概率预测,且对南海热带气旋生成个数和强度异常的确定性预测结果与观测接近. | Shentong Li Jinxiao Li Jing Yang Qing Bao Yimin Liu Zili Shen | 2022 | Atmospheric and Oceanic Science Letters2022，15，2： | 0 |
| 4 | 大椭圆轨道的运载火箭弹道设计显示文摘For the final stage of a launch vehicle which cannot start multiple times,the main constraint of a highly eccentric orbit launch mission is the argument of perigee,which is conditioned by the range.This paper studies the payload capacity at different launch sites for a highly eccentric orbit(e.g.GTO)and gives a method to improve the payload capacity with an argument of perigee constraint by increasing the sliding time before the final ignition and simultaneously adjusting the launch azimuth and yaw at the final stage.An example of launching to GTO orbit on a rocket from Hainan is given,which proves that the method has strong engineering value. | FENG Jihang ZHANG Weidong WANG Ying LIU Chang SHEN Zili | 2020 | Aerospace China2020，21，3： | 0 |
| 5 | Progress and future prospects of decadal prediction and data assimilation:A review显示文摘年代际预测,也称为“近期气候预测”,旨在预测未来1-10年内的气候变化,是气候预测和气候变化研究领域的一个新关注点.它位于季节至年际预测和长期气候变化预测之间,结合了初值问题和外部强迫问题的两个方面.年代际预测的核心技术在于用于模式初始化的同化方法的准确性和效率,其目标是为模式提供准确的初始条件,其中包含观测到的气候系统内部变率,年代际预测的初始化通常涉及在耦合框架内同化海洋观测,其中观测到的信号通过耦合过程传递到其他分量,如大气和海冰.然而,最近的研究越来越关注在海洋-大气耦合模式中探索耦合数据同化(CDA),有人认为CDA有潜力显著提高年代际预测技巧.本文综合评述了该领域的三个方面的研究现状:初始化方法,年代际气候预测的可预测性和预测技巧,以及年代际预测的未来发展和挑战. | Wen Zhou Jinxiao Li Zixiang Yan Zili Shen Bo Wu Bin Wang Ronghua Zhang Zhijin Li | 2024 | Atmospheric and Oceanic Science Letters2024，17，1： | 0 |
| 6 | An Efficient Semi-Synthetic Method to Construct Docetaxel via Sterically Crowded Linear Side Chain Esterification显示文摘一个有效半合成的方法被开发构造 docetaxel 1 由使用 N, N-di-Boc 保护了作为方面链来源的线性 isoserine 衍生物 5,在哪个,氮原子上的笨重保护组堵住了 C-2 位置并且在以前的研究禁止了不可避免的 racemization。 | Xin Shen Jidong Yang Huaxing Zhan Hu Wang Shaohong Wu Zili Chen | 2013 | Chinese Journal of Chemistry2013，31，1： | 0 |
| 7 | 新一代中型固液捆绑火箭技术特点显示文摘China’s first solid-liquid bundled launch vehicle,the Long March 6 A(LM-6 A)successfully adopted a number of key new technologies,launching the Pujiang 2 and Tiankun 2 satellites precisely into their predetermined orbits,thus demonstrating that China has mastered solid-liquid bundled launch vehicle technology and has a new member in the new generation launch vehicle family.For the first time in China,a booster adopted a 2 m-diameter solid motor and a 270 V,20 k W high-voltage and high-power electric servo system was used to control the swing of the solid motor nozzles.A health diagnosis system for the core first stage engine and unattended automation technology were also adopted for the first time. | ZHANG Weidong YANG Fan WU Jialin ZHOU Chenghong SHEN Zili CHANG Dongfang | 2022 | Aerospace China2022，23，2： | 0 |
| 8 | Spatial heterogeneity of available zinc, copper, and manganese in Xiangcheng Tobacco Planting Fields, Henan Province, China显示文摘Geostatistical methods were used in combina-tion with geographical information system(GIS)technol-ogy to analyze the spatial distribution characteristics of available zinc,copper,and manganese in the Xiangcheng tobacco planting fields,Henan province,China.Analysis of the isotropic variogram indicated that the Zn semivar-iogram was well described with the Gaussian model,with the distance of spatial dependence being 900.7m;while the Mn semivariogram was well described with spherical models,with the distance of spatial dependence being 14060m;and,the Cu semivariogram was well described with exponential models,with the distance of spatial dependence being 27860.7m.Mn and Zn were strongly spatially dependent,with the C_(0)/sill being 0.014 and 0.147 in this given region;while Cu was moderately spatially dependent,with the C_(0)/sill being 0.3528.With the kriging analysis,the spatial distribution maps of contents of these three trace elements in the Xiangcheng tobacco planting regions was drawn with the Arcview software.It was found that the soils with higher content of Mn were mainly distributed in the high mountains of the southern part of the given regions,while the soils with higher content of Cu were mainly distributed in the south,decreasing from the south to the north.The soil with contents of Zn in the range of 0.76–1.33 mg/kg existed in the high mountains of the west and middle parts of the investigated regions,accounting for 76.11%of the whole area. | Haisheng CHEN Zili SHEN Guoshun LIU Zhengxian TONG | 2009 | Frontiers in Biology2009，4，4： | 0 |
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