Supramolecular protein glue to boost enzyme activity,Yuna Shang.Yue Liao,Zhongju Ye,Zhongyan Wang,Lehui Xiao,Jie Gao,Qigang Wang,Zhimou Yang SCIENCE CHINA Materials,2019,62(9):1341-1349,,Fluorination-modulated end uni...Supramolecular protein glue to boost enzyme activity,Yuna Shang.Yue Liao,Zhongju Ye,Zhongyan Wang,Lehui Xiao,Jie Gao,Qigang Wang,Zhimou Yang SCIENCE CHINA Materials,2019,62(9):1341-1349,,Fluorination-modulated end units for high-performance non fullrene acceptors based organic solar cells,Yanna Sun,Huan-Huan Gao,Yuan-Qiu-Qiang Yi,Xiangjian Wan,Huanran Feng,Xin Ke,Yamin Zhang,Jing Yan,Chenxi Li,Yongsheng Chen,SCIENCE CHINA Materials,2019,62(8):1210-1217 Sulfur/nickel ferrite composite as cathode with high-volumetric-capacity for lithium-sulfur battery Ze Zhang,Di-Hua Wu,Zhen Zhou,Guo-Ran Li,Sheng Liu,Xue Ping Gao,SCIENCE CHINA Materials,2019,62(1):74-86.展开更多
This study investigates the influence of the elastic modulus(E)of the composite strata on the trough width coefficient(i).It is hypothesized that,in composite strata,the relationship between the trough width coefficie...This study investigates the influence of the elastic modulus(E)of the composite strata on the trough width coefficient(i).It is hypothesized that,in composite strata,the relationship between the trough width coefficient(i)and the stratum thickness(H)follows a piecewise linear trend.Specifically,within strata of identical elastic modulus(E),i exhibits a linear correlation with H,while variations in E affect the slope of this correlation.Building upon the non-iterative analytical method(NIAM)for evaluating tunnel excavation responses in composite strata,this study proposes two novel approaches:the crucial point method(CPM)and the standard curve method(SCM).These methods incorporate the elastic modulus into the estimation of i.The values of i obtained via NIAM and refined through CPM and SCM are validated against field data using the parameter K.The results are consistent with existing research findings,thereby confirming the reliability of the proposed methodology.Furthermore,the study investigates the relationship between tunnel depth(h0)and tunnel radius(R),and explores the interactions among the layer number of stratum(n),elastic modulus(E),and layer thickness(H).A reduction coefficient(η)is introduced to improve the model's accuracy.The proposed approach is applied to nine tunnel engineering cases,and comparisons with measured data demonstrate its accuracy and practical applicability.展开更多
2001年启动的多哈回合谈判久拖不决,致使世界贸易组织(WTO)补贴规则未能进行有效革新,日益显现滞后性和不适应性。一些国家一边主张WTO补贴规则改革,一边推动国内补贴立法的更新,并积极将新补贴规则向多边贸易体系之外的区域性协定推广...2001年启动的多哈回合谈判久拖不决,致使世界贸易组织(WTO)补贴规则未能进行有效革新,日益显现滞后性和不适应性。一些国家一边主张WTO补贴规则改革,一边推动国内补贴立法的更新,并积极将新补贴规则向多边贸易体系之外的区域性协定推广。国际补贴新规则呈现出新的时代特点和动向,对现有的WTO补贴规则构成了严峻挑战,其改革和完善成为国际经贸的热议和焦点问题。中国应积极参与这一改革进程,在国际层面坚定维护WTO多边贸易体制,推动改进SCM协定补贴规则,参与国际规则博弈,争取有利于我国的多边、区域补贴规则空间,在国内层面不断调整和完善我国补贴政策,推进和巩固国企改革成果,为国际补贴规则的发展贡献中国力量。The prolonged delay in the Doha Round of negotiations launched in 2001 has resulted in the failure to effectively innovate the World Trade Organization (WTO) rules on subsidies, which have become increasingly outdated and maladaptive. Some countries advocate the reform of WTO subsidy rules while promoting the updating of domestic subsidy legislation and actively promoting the new subsidy rules to regional agreements outside the multilateral trading system. The new rules on international subsidies present new features and trends of the times, posing a serious challenge to the existing WTO subsidy rules, whose reform and improvement have become a hot topic of discussion and focus of international trade and economics. China should actively participate in this reform process, firmly safeguard the WTO multilateral trading system at the international level, promote the improvement of the subsidy rules of the SCM Agreement, participate in the international rules game, and strive for the space of the multilateral and regional subsidy rules that are favorable to China;at the domestic level, we should continuously adjust and improve our subsidy policy, promote and consolidate the achievements of the reform of state-owned enterprises, and contribute China’s strength to the development of the international subsidy rules.展开更多
文摘Supramolecular protein glue to boost enzyme activity,Yuna Shang.Yue Liao,Zhongju Ye,Zhongyan Wang,Lehui Xiao,Jie Gao,Qigang Wang,Zhimou Yang SCIENCE CHINA Materials,2019,62(9):1341-1349,,Fluorination-modulated end units for high-performance non fullrene acceptors based organic solar cells,Yanna Sun,Huan-Huan Gao,Yuan-Qiu-Qiang Yi,Xiangjian Wan,Huanran Feng,Xin Ke,Yamin Zhang,Jing Yan,Chenxi Li,Yongsheng Chen,SCIENCE CHINA Materials,2019,62(8):1210-1217 Sulfur/nickel ferrite composite as cathode with high-volumetric-capacity for lithium-sulfur battery Ze Zhang,Di-Hua Wu,Zhen Zhou,Guo-Ran Li,Sheng Liu,Xue Ping Gao,SCIENCE CHINA Materials,2019,62(1):74-86.
基金support from the National Natural Science Foundation of China(Grant No.52278387).
文摘This study investigates the influence of the elastic modulus(E)of the composite strata on the trough width coefficient(i).It is hypothesized that,in composite strata,the relationship between the trough width coefficient(i)and the stratum thickness(H)follows a piecewise linear trend.Specifically,within strata of identical elastic modulus(E),i exhibits a linear correlation with H,while variations in E affect the slope of this correlation.Building upon the non-iterative analytical method(NIAM)for evaluating tunnel excavation responses in composite strata,this study proposes two novel approaches:the crucial point method(CPM)and the standard curve method(SCM).These methods incorporate the elastic modulus into the estimation of i.The values of i obtained via NIAM and refined through CPM and SCM are validated against field data using the parameter K.The results are consistent with existing research findings,thereby confirming the reliability of the proposed methodology.Furthermore,the study investigates the relationship between tunnel depth(h0)and tunnel radius(R),and explores the interactions among the layer number of stratum(n),elastic modulus(E),and layer thickness(H).A reduction coefficient(η)is introduced to improve the model's accuracy.The proposed approach is applied to nine tunnel engineering cases,and comparisons with measured data demonstrate its accuracy and practical applicability.
文摘油田的水下控制模块液压系统长期处于高压、高温和腐蚀性环境下,面临着极高的故障风险。针对液压系统进行有效的故障诊断和预防性维护,研究将基于动态贝叶斯网络(Dynamic Bayesian Network,DBN)构建液压系统的故障诊断模型。实验结果表明,液压系统历史故障概率与实验预测的故障概率值均随时间的增加而增加。在T=0时,预测的液压系统故障概率值为0.106,与历史液压系统故障概率0.117非常接近;在T=20时,预测故障概率为0.194,历史故障概率为0.198,两者的诊断概率差值略有增加。此外,从T=0到T=20,模型故障诊断精确性均在85%以上,其中在T=0时的模型预测精确度最高为96.2%,T=20时,模型预测精确度最低为85.7%。研究表明,所提出的诊断模型在故障诊断时具有较好的精确性和稳定性,为油田水下控制模块(Subsea Control Module,SCM)液压系统的智能故障诊断提供一种新的解决方案。
文摘2001年启动的多哈回合谈判久拖不决,致使世界贸易组织(WTO)补贴规则未能进行有效革新,日益显现滞后性和不适应性。一些国家一边主张WTO补贴规则改革,一边推动国内补贴立法的更新,并积极将新补贴规则向多边贸易体系之外的区域性协定推广。国际补贴新规则呈现出新的时代特点和动向,对现有的WTO补贴规则构成了严峻挑战,其改革和完善成为国际经贸的热议和焦点问题。中国应积极参与这一改革进程,在国际层面坚定维护WTO多边贸易体制,推动改进SCM协定补贴规则,参与国际规则博弈,争取有利于我国的多边、区域补贴规则空间,在国内层面不断调整和完善我国补贴政策,推进和巩固国企改革成果,为国际补贴规则的发展贡献中国力量。The prolonged delay in the Doha Round of negotiations launched in 2001 has resulted in the failure to effectively innovate the World Trade Organization (WTO) rules on subsidies, which have become increasingly outdated and maladaptive. Some countries advocate the reform of WTO subsidy rules while promoting the updating of domestic subsidy legislation and actively promoting the new subsidy rules to regional agreements outside the multilateral trading system. The new rules on international subsidies present new features and trends of the times, posing a serious challenge to the existing WTO subsidy rules, whose reform and improvement have become a hot topic of discussion and focus of international trade and economics. China should actively participate in this reform process, firmly safeguard the WTO multilateral trading system at the international level, promote the improvement of the subsidy rules of the SCM Agreement, participate in the international rules game, and strive for the space of the multilateral and regional subsidy rules that are favorable to China;at the domestic level, we should continuously adjust and improve our subsidy policy, promote and consolidate the achievements of the reform of state-owned enterprises, and contribute China’s strength to the development of the international subsidy rules.
