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| 1 | KPI-based Real-time Situational Awareness for Power Systems with a High Proportion of Renewable Energy Sources显示文摘With the increasing complexity of power systems and the widespread penetration of renewable energy sources(RES),real-time situational awareness for power systems is of great significance for operational scheduling.Considering the impact of RES on power system operations,a situational awareness key performance index(KPI)system for power systems with a high proportion of RES is proposed in this paper,which consists of reserve capacity abundance,ramp resource abundance,center of inertia(COI)frequency deviation,interface power flow margin,synthesized voltage stability,and angle stability margin.Then,the KPIs are synthesized and visualized by the decision tree method and radar chart method,respectively,for monitoring the operation states(i.e,normal,alert,and emergency states)of power systems with a high proportion of RES.Numerical simulations are conducted in a revised New England 16-machine 68-bus power system and an actual CEPRI-RE power system in the northwest region of China with a high proportion of RES.The results show that the proposed KPI-based situational awareness method is able to accurately monitor the real-time state of power systems with a high proportion of RES,and can assist power dispatchers to make effective decisions. | Tianhan Zhang Shengyuan Liu Weiqiang Qiu Zhenzhi Lin Lingzhi Zhu Zhao Dawei Minhui Qian LI Yang | 2022 | CSEE Journal of Power and Energy Systems2022，8，4： | 1 |
| 2 | Mechano-sensitive TET1s inhibits endothelial athero-susceptible phenotype through regulating YAP phosphorylation显示文摘Atherosclerosis is a chronic progressive disease and one of the major causes of cardio-cerebral vascular diseases.Accumulating evidence indicates that endothelial dysfunc-tion is the initiating step in atherosclerosis.The pattern of local blood flow becomes disturbed(low and oscillatory shear stress[OSS])in the curved or branched segments of the arterial tree,causing endothelial cells(ECs)to exhibit athero-susceptible phenotypes,such as hyperproliferation and inflammation. | Lu Huang Kai Qu Caihong Wang Daoxi Lei Wenhua Yan Tianhan Li Zhengjun Hou Juhui Qiu Guixue Wang | 2023 | Genes & Diseases2023，10，4： | 1 |
| 3 | Controlled Islanding Strategy Considering Uncertainty of Renewable Energy Sources Based on Chance-constrained Model显示文摘Controlled islanding plays an essential role in preventing the blackout of power systems.Although there are several studies on this topic in the past,no enough attention is paid to the uncertainty brought by renewable energy sources(RESs)that may cause unpredictable unbalanced power and the observabilit>T of power systems after islanding that is essential for back-up black-start measures.Therefore,a novel controlled islanding model based on mixed-integer second-order cone and chance-constrained programming(MISOCCP)is proposed to address these issues.First,the uncertainty of RESs is characterized by their possibility distribution models with chance constraints,and the requirements,e.g.,system observability,for rapid back-up black-start measures are also considered.Then,a law of large numbers(LLN)based method is em-ployed for converting the chance constraints into deterministic ones and reformulating the non-convex model into convex one.Finally,case studies on the revised IEEE 39-bus and 118-bus power systems as well as the comparisons among different models are given to demonstrate the effectiveness of the proposed model.The results show that the proposed model can result in less unbalanced power and better observability after islanding compared with other models. | Shengyuan Liu Tianhan Zhang Zhenzhi Lin Yilu Liu Yi Ding Li Yang | 2022 | Journal of Modern Power Systems and Clean Energy2022，10，2： | 1 |
| 4 | G3BP2 regulates oscillatory shear stress-induced endothelial dysfunction显示文摘GTPase-activating SH3 domain-binding protein 2(G3BP2)is a mediator that responds to environmental stresses through stress granule formation and is involved in the progression of chronic diseases.However,no studies have examined the contribution of G3BP2 in the oscillatory shear stress(OSS)-induced endothelial dysfunction.Here we assessed the effects of G3BP2 in endothelial cells(ECs)function and investigated the underlying mechanism.Using shear stress apparatus and partial ligation model,we identified that stress granulerelated genes in ECs could be induced by OSS with RNA-seq,and then confirmed that G3BP2 was highly and specifically expressed in athero-susceptible endothelia in the OSS regions.G3bp2e/eApoee/e mice had significantly decreased atherosclerotic lesions associated with deficiency of G3BP2 in protecting endothelial barrier function,decreasing monocyte adhesion to ECs and inhibiting the proinflammatory cytokine levels.Furthermore,loss of G3BP2 diminished OSS-induced inflammation in ECs by increasing YAP nucleocytoplasmic shuttling and phosphorylation.These data demonstrate that G3BP2 is a critical OSS regulated gene in regulating ECs function and that G3BP2 inhibition in ECs is a promising atheroprotective therapeutic strategy. | Tianhan Li Juhui Qiu Tingting Jia Yinming Liang Kun Zhang Wenhua Yan Zhengjun Hou Shiwei Yang Lushan Liu Wenhao Xiong Yaokai Chen Guixue Wang | 2022 | Genes & Diseases2022，9，6： | 1 |
| 5 | A laboratory method to simulate seismic waves induced by underground explosions显示文摘The seismic waves induced by underground explosions generate geological hazards affecting deep buried tunnels such as rockbursts and engineering-induced earthquakes. This issue is difficult to study through full-scale testing due to the expense and unpredictable danger. To solve this problem, the authors developed experimental apparatus and presented a laboratory method to simulate seismic waves induced by underground explosions. In this apparatus, a combined structure of a diffusive-shaped water capsule and a special-shaped oil capsule was designed. This structure can provide an applied confining stress and freely transmit the stress wave generated by external impact. Therefore, the coupled loading of in situ stress and seismic waves induced by underground explosions in the deep rock mass was simulated. The positive pressure time and peak value of the stress wave could be adjusted by changing the pulse-shaper and the initial impact energy. The obtained stress waves in the experiments correspond to that generated by 0.15-120 kt of TNT equivalent explosion at a scaled distance of 89.9-207.44 m/kt. | Yuguo Ji Mingyang Wang Jie Li Shuxin Deng Zhihao Li Tianhan Xu Fei Gao | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，5： | 0 |
| 6 | Highly Active Sulfided NiPMo Hydrodesulfurization Catalyst Prepared from Keggin-type Phosphomolybdic Acid显示文摘A highly active sulfided NiPMo/MCM-41(NiPMo-S/M41)hydrodesulfurization(HDS)catalyst was successfully synthesized using Keggin-type phosphomolybdic acid as the phosphorus and molybdenum source and thioacetamide as the sulfur source.The supported catalysts NiPMo/M41,Ni_(2)P-Mo/M41,and Ni_(2)P/M41 were also prepared to investigate the effects of Mo,S,and the Keggin structure on the HDS performance.The HDS activities of NiPMo/M41 and NiPMo-S/M41 toward dibenzothiophene were much higher than that of Ni_(2)P-Mo/M41,demonstrating that the active phases in the Keggin-structured catalysts were significantly superior to the Mo-modified Ni_(2)P phase.The HDS activities of the catalysts followed the order NiPMo-S/M41(96.7%)>NiPMo/M41(89.9%)>Ni_(2)P-Mo/M41(53.5%)>Ni_(2)P/M41(48.9%).For Ni_(2)P/M41,Ni_(2)P-Mo/M41,and NiPMo/M41,cyclohexylbenzene(CHB)was formed in low concentrations(<21.0%),indicating that direct desulfurization was the favored reaction route and that this did not change for Keggin-structured NiPMo/M41.By contrast,the CHB selectivity of NiPMo-S/M41 increased to 44.6%,much higher than that of NiPMo/M41(17.6%),demonstrating that sulfidation enhanced the hydrogenation ability,which was ascribed to a metal-acid synergistic effect. | Zhu Tianhan Li Wenxu Wang Haiyong Wang Chenguang Yang Bin | 2023 | China Petroleum Processing & Petrochemical Technology2023，25，1： | 0 |
| 7 | Desulfovibrio desulfuricans aggravates atherosclerosis by enhancing intestinal permeability and endothelial TLR4/NF-kB pathway in Apoe^(-/-) mice显示文摘It is increasingly aware that gut microbiota is closely associated with atherosclerosis.However,which and how specific gut bacteria regulate the progression of atherosclerosis is still poorly understood.In this study,modified linear discriminant analysis was performed in comparing the gut microbiota structures of atherosclerotic and non-atherosclerotic mice,and Desulfovibrio desulfuricans(D.desulfuricans)was found to be associatedwith atherosclerosis.D.desulfuricans-treated Apoe^(-/-) mice showed significantly aggravated atherosclerosis.The proatherogenic effect of D.desulfuricans was attributed to its ability to increase intestinal permeability and subsequent raise in the transit of lipopolysaccharide(LPS)from the intestine to the bloodstream.Excessive LPS in the blood can elicit local and systemic inflammation and activate Toll-like receptor 4(TLR4)/nuclear factor-kB(NF-kB)signaling of endothelial cells.TAK-242,a specific inhibitor of TLR4,can ameliorate the development of D.desulfuricansinduced atherosclerosis by blocking the LPS-induced activation of TLR4/NF-kB signaling. | Kun Zhang Xian Qin Juhui Qiu Tong Sun Kai Qu Ahmad Ud Din Wenhua Yan Tianhan Li Yidan Chen Wei Gu Xiancai Rao Guixue Wang | 2023 | Genes & Diseases2023，10，1： | 0 |
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