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12篇 您的检索式:作者名="Ligen Liu"
    题名 作者 年代 出处 被引量
1Small molecules for fat combustion: targeting obesity显示文摘Obesity is increasing in an alarming rate worldwide, which causes higher risks of some diseases, such as type 2 diabetes, cardiovascular diseases, and cancer. Current therapeutic approaches,either pancreatic lipase inhibitors or appetite suppressors, are generally of limited effectiveness. Brown adipose tissue(BAT) and beige cells dissipate fatty acids as heat to maintain body temperature, termed non-shivering thermogenesis; the activity and mass of BAT and beige cells are negatively correlated with overweight and obesity. The existence of BAT and beige cells in human adults provides an effective weight reduction therapy, a process likely to be amenable to pharmacological intervention. Herein, we combed through the physiology of thermogenesis and the role of BAT and beige cells in combating with obesity. We summarized the thermogenic regulators identified in the past decades, targeting G proteincoupled receptors, transient receptor potential channels, nuclear receptors and miscellaneous pathways.Advances in clinical trials were also presented. The main purpose of this review is to provide a comprehensive and up-to-date knowledge from the biological importance of thermogenesis in energy homeostasis to the representative thermogenic regulators for treating obesity. Thermogenic regulatorsmight have a large potential for further investigations to be developed as lead compounds in fighting obesity.Jingxin Liu Yitao Wang Ligen Lin 2019Acta Pharmaceutica Sinica B2019,9,2:18
2Single-atom Sn-Zn pairs in CuO catalyst promote dimethyldichlorosilane synthesis显示文摘Single-atom catalysts are of great interest because they can maximize the atom-utilization efficiency and generate unique catalytic properties;however,much attention has been paid to single-site active components,rarely to catalyst promoters.Promoters can significantly affect the activity and selectivity of a catalyst,even at their low concentrations in catalysts.In this work,we designed and synthesized CuO catalysts with atomically dispersed co-promoters of Sn and Zn.When used as the catalyst in the Rochow reaction for the synthesis of dimethyldichlorosilane,this catalyst exhibited much-enhanced activity,selectivity and stability compared with the conventional CuO catalysts with promoters in the form of nanoparticles.Density functional theory calculations demonstrate that single-atomic Sn substitution in the CuO surface can enrich surface Cu vacancies and promote dispersion of Zn to its atomic levels.Sn and Zn single sites as the co-promoters cooperatively generate electronic interaction with the CuO support,which further facilitates the adsorption of the reactant molecules on the surface,thereby leading to the superior catalytic performance.Qi Shi Yongjun Ji Wenxin Chen Yongxia Zhu Jing Li Hezhi Liu Zhi Li Shubo Tian Ligen Wang Ziyi Zhong Limin Wang Jianmin Ma Yadong Li Fabing Su 2020National Science Review2020,7,3:2
3Deployment and Exploration of a Gas Storage Well Pattern Based on the Threshold Radius显示文摘To tackle the problem that wells that are deployed in a specific pattern based on the requirements of gas reservoir development are not suitable for gas storage,we have conducted concentrically circular injection and production simulation experiments for gas storage,discovered the existence of a threshold radius,denoted by Rt,and derived the expression for Rt.Based on the analysis and discussion results,we propose a strategy for deploying gas storage wells in specific patterns.The expression for Rt shows that it is affected by factors such as the gas storage gas production/injection time,the upper pressure limit,the lower pressure limit,the bottomhole flow pressure at the ends of injection and production,the and permeability.The analysis and discussion results show that the Rt of a gas storage facility is much smaller than the Rt for gas reservoir development.In the gas storage facilities in China,the Rt for gas production is less than the Rt for the gas injection,and Rt increases with the difference in the operating pressure and with permeability K.Based on the characteristics of Rt,we propose three suggestions for gas storage well pattern deployment:(1)calculate Rt according to the designed functions of the gas storage facility and deploy the well pattern according to Rt;(2)deploy sparser,large-wellbore patterns in high-permeability areas and denser,small-wellbore patterns in high-permeability areas;and(3)achieve the gas injection well pattern by new drilling,and the gas production well pattern through a combination of the gas injection well pattern and old wells.By assessing a gas storage facility with a perfect well pattern after a number of adjustments,we found that the Rt of the 12 wells calculated in this paper is basically close to the corresponding actual radius,which validates our method.The results of this study provide a methodological basis for well pattern deployment in new gas storage construction.TANG Ligen ZHU Weiyao ZHU Huayin SUN Chunhui YANG Fenglai WANG Yan Li Xiaorui Li Haiming CHU Guangzhen WANG Jieming KONG Debin YUE Ming LIU Yuwei HUANG Kun 2021Acta Geologica Sinica(English Edition)2021,95,2:1
4Grey system model with the fractional order accu- mulation显示文摘Lifeng Wu Sifeng Liu Ligen Yao Shuli Yan Dinglin Liu 2013Communications in Nonlinear Science and Numerical Simulation2013,18,7:1
5Grey system model with the fractional order accumulation 显示文摘Lifeng Wu Sifeng Liu Ligen Yao Shuli Yah Dinglin Liu 2013Commun Nonlinear Sci Numer Simulat2013,18,:1
6Grey system model with the fractional order accumulation显示文摘Wu Lifeng Liu Sifeng Yao Ligen 2013Communications in nonlinear science and numerical simulation2013,18,:1
7Grey system model with the fractional order accumulation 显示文摘Wu Lifeng Liu Sifeng Yao Ligen 2013Commun Nonlinear Sci Numer Simulat2013,18,:1
8Grey system model with the fractional order accumulation显示文摘Lifeng Wu Sifeng Liu Ligen Yao Shuli Yan Dinglin Liu 2012Communications in Nonlinear Science and Numerical Simulation2012,,:1
9Hsp90/C terminal Hsc70-interacting protein regulates the stability of Ikaros in acute myeloid leukemia cells显示文摘The stability of Ikaros family zinc finger protein 1(Ikaros),a critical hematopoietic transcription factor,can be regulated by cereblon(CRBN)ubiquitin ligase stimulated by immunomodulatory drugs in multiple myeloma.However,other stabilization mechanisms of Ikaros have yet to be elucidated.In this study,we show that the pharmacologic inhibition or knockdown of Hsp90 downregulates Ikaros in acute myeloid leukemia(AML)cells.Proteasome inhibitor MG132 but not autophagy inhibitor chloroquine could suppress the Hsp90 inhibitor STA-9090-induced reduction of Ikaros,which is accompanied with the increased ubiquitination of Ikaros.Moreover,Ikaros interacts with E3 ubiquitin-ligase C terminal Hsc70 binding protein(CHIP),which mediates the STA-9090-induced ubiquitination of Ikaros.In addition,the knockdown of Ikaros effectively inhibits the proliferation of leukemia cells,but this phenomenon could be rescued by Ikaros overexpression.Collectively,our findings indicate that the interplay between HSP90 and CHIP regulates the stability of Ikaros in AML cells,which provides a novel strategy for AML treatment through targeting the HSP90/Ikaros/CHIP axis.Meng Liu Jin Jin Yanjie Ji Huizhuang Shan Zhihui Zou Yang Cao Li Yang Ligen Liu Li Zhou Hu Lei Yunzhao Wu Hanzhang Xu Yingli Wu 2021Science China(Life Sciences)2021,64,9:0
10Research on the Efficiency Evaluation for the Board Based on GT-AHP Method显示文摘Ligen Yao Tao Liu Liyuan Ren Lei Liu 2006Journal of Systems Science and Information2006,4,4:0
11An analysis method of injection and production dynamic transient flow in a gas field storage facility显示文摘A dynamic transient flow analysis method considering complex factors such as the cyclic injection and production history in a gas field storage facility was established in view of the limitations of the existing methods for transient flow analysis and the characteristics of the injection-production operation of strongly heterogeneous gas reservoirs, and the corresponding theoretical charts were drawn. In addition, an injection-production dynamic transient flow analysis model named 'three points and two stages' suitable for an underground gas storage(UGS) well with alternate working conditions was proposed. The 'three points' refer to three time points during cyclic injection and production, namely, the starting point of gas injection for UGS construction, the beginning and ending points of the injection-production analysis stage;and the 'two stages' refer to historical flow stage and injection-production analysis stage. The study shows that the dimensionless pseudo-pressure and dimensionless pseudo-pressure integral curves of UGS well flex downward in the early stage of the injection and production process, and the dimensionless pseudo-pressure integral derivative curve is convex during the gas production period and concave during the gas injection period, and the curves under different flow histories have atypical features. The new method present in this paper can analyze transient flow of UGS accurately. The application of this method to typical wells in Hutubi gas storage shows that the new method can fit the pressure history accurately, and obtain reliable parameters and results.WANG Jieming LI Chun SUN Junchang TANG Ligen ZHONG Rong LIU Xianshan ZHENG Shaojing 2022Petroleum Exploration and Development2022,49,1:0
12Engineering oxygen vacancies and localized amorphous regions in CuO-ZnO separately boost catalytic reactivity and selectivity显示文摘Generating different types of defects in heterogeneous catalysts for synergetic promotion of the reactivity and selectivity in catalytic reactions is highly challenging due to the lack of effective theoretical guidance.Herein,we demonstrate a facile strategy to introduce two types of defects into the CuO-ZnO model catalyst,namely oxygen vacancies(OVs)induced by H2 partial reduction and localized amorphous regions(LARs)generated via the ball milling process.Using industrially important Rochow–Müller reaction as a representative,we found OVs predominantly improved the target product selectivity of dimethyldichlorosilane,while LARs significantly increased the conversion of reactant Si.The CuO-ZnO catalyst with optimized OVs and LARs contents achieved the best catalytic property.Theoretical calculation further revealed that LARs promote the generation of the Cu3Si active phase,and OVs impact the electronic structure of the Cu3Si active phase.This work provides a new understanding of the roles of different catalyst defects and a feasible way of engineering the catalyst structure for better catalytic performances.Yongjun Ji Xiaoli Chen Shaomian Liu Liwen Xing Xingyu Jiang Bin Zhang Huifang Li Wenxing Chen Ziyi Zhong Ligen Wang Guangwen Xu Fabing Su 2023Nano Research2023,16,2:0
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