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Multi-area Frequency-constrained Unit Commitment for Power Systems with High Penetration of Renewable Energy Sources and Induction Machine Load

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Journal of Modern Power Systems and Clean Energy 2024年第3期12卷 754-766页

作者： Leibao Wang Hui Fan Jifeng Liang Longxun Xu Tiecheng Li peng luo Bo Hu Kaigui Xie the State Grid Hebei Electric Power Research Institute Shijiazhuang 050021China State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing UniversityChongqing 400044China

The increasing penetration of renewable energy sources(RESs)brings great challenges to the frequency security of power *** traditional frequency-constrained unit commitment(FCUC)analyzes frequency by simplifying the average system frequency and ignoring numerous induction machines(IMs)in load,which may underestimate the risk and increase the operational *** this paper,we consider a multiarea frequency response(MAFR)model to capture the frequency dynamics in the unit scheduling problem,in which regional frequency security and the inertia of IM load are modeled with high-dimension differential algebraic equations.A multi-area FCUC(MFCUC)is formulated as mixed-integer nonlinear programming(MINLP)on the basis of the MAFR ***,we develop a multi-direction decomposition algorithm to solve the MFCUC *** original MINLP is decomposed into a master problem and *** subproblems check the nonlinear frequency dynamics and generate linear optimization cuts for the master problem to improve the frequency security in its optimal *** studies on the modified IEEE 39-bus system and IEEE 118-bus system show a great reduction in operational ***,simulation results verify the ability of the proposed MAFR model to reflect regional frequency security and the available inertia of IMs in unit scheduling.

关键词： Decomposition algorithm frequency response frequency-constrained unit commitment induction machine multi-area mixed-integer nonlinear programming(MINLP)

Bismuth-free Mg_(3)Sb_(2) with enhanced room-temperature thermoelectric and mechanical properties

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Journal of Materiomics 2024年第5期10卷 1101-1108页

作者： Jie Song peng luo Hailong Sun Hezhang Li Chao Wang Yi Niu Jing Jiang Clean Energy Materials and Engineering Center State Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu611731China The State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing100084China

Thermoelectric materials are competitive candidates for special cooling ***_(3)Sb_(2)-based materials consisting of inexpensive ingredients have profound thermoelectric *** present,alloying with Mg_(3)Bi_(2) is the most effective approach to optimize the thermoelectric properties of Mg_(3)Sb_(2)-based ***,the extremely low abundance of bismuth in the crust contradicts its economic *** this work,the ZrO_(2) micro-particles were separated into the Mg_(3.2)Sb_(1.99)Te_(0.01).The doping effect of Zr atoms at Mg sites increased the electrical conductivity,and the combined secondary phase lowered the lattice thermal *** acceptable degradation in the Seebeck coefficient,the sample combined with 5%(in mass)ZrO_(2) exhibited a dimensionless figure of merit(zT)of 0.49 and a power factor of 2.7 mW·m^(−1)·K^(−2) near room *** average zT in the range from 300 K to 500 K reached 0.8,on par with the Mg_(3)Sb_(2) single bond Mg_(3)Bi_(2) ***,the compressive and bending strengths reach 669 MPa and 269 MPa,respectively,far superior to the common room-temperature *** secondary phase showed a surprising and uncostly promotion of the Mg_(3)Sb_(2)-based thermoelectric materials,impelling the realization of its commercial application.

关键词： Mg_(3)Sb_(2)-Mg_(3)Bi_(2)alloy Secondary phase Room-temperature thermoelectric properties Mechanical properties Inexpensive ingredients

Multi-stimuli-responsive aggregation-induced emission copper iodide cluster

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Science China Chemistry 2024年第4期67卷 1193-1197页

作者： Bo Li Yuan-Yuan Liu peng luo Ye-Ru Liu Ying-Jun Chen Kai Li Shuang-Quan Zang College of Chemistry and Pharmacy Engineering Nanyang Normal UniversityNanyang 473061China Green Catalysis Center and College of Chemistry Zhengzhou UniversityZhengzhou 450001China

Stimuli-responsive luminescent materials have attracted significant attention in the development of smart photoactive materials for both fundamental research and technological *** this work,a new copper iodide cluster(1)with aggregationinduced emission(AIE)characteristic,was obtained combining Cu_(4)I_(4) core with rhodamine B derivative ligand.1 has reversible and distinct multi-stimuli-responsive luminescence for external temperature,volatile organic compound,and mechanical ***,1 exhibited unusual large blue shift(84 nm)after being ground,which originated from the change of intermolecular ***,1 exhibits high oxygen quenching efficiency for 82.2% at 1 *** studies showed that the multi-stimuli-responsive luminescence properties of 1 can be attributed to the regulation of cluster-centered luminescence process,metal-to-ligand charge transfer process,halide-to-metal charge transfer luminescence process and aggregationinduced barrier to oxygen *** work not only reports an AIE copper iodide cluster,but also provides a new strategy to develop multi-stimuli-responsive luminescence materials.

关键词： copper iodide cluster aggregation-induced emission multi-stimuli-response

New insights in nano-copper chromite catalyzing ultrafine AP:Evaluation of dispersity and mixing uniformity

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Defence Technology（防务技术） 2024年第2期32卷 120-133页

作者： Yong Kou peng luo Lei Xiao Yanping Xin Guangpu Zhang Yubing Hu Junqing Yang Hongxu Gao Fengqi Zhao Wei Jiang Gazi Hao National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China Xi'an North Huian Chemical Industry Co.Ltd Xi'an710302China Xi'an Modern Chemistry Research Institute Xi'an710065China

Improving the application of nanomaterials has always been a research hotspot in the field of energetic materials(EMs)due to their obvious catalytic effect on the EMs,especially the uniformly dispersed ***,few studies have reported the dispersion of *** this study,the dispersity and mixing uniformity of nano-CuCr_(2)O_(4)was evaluated based on the difference of solid UV light absorption between the nano-catalytic materials and *** nano-CuCr_(2)O_(4)/ultrafine AP composites with different dispersity of nano-CuCr_(2)O_(4)were prepared by manual grinding and mechanical grinding with different grinding strength and griding *** then,the absorbance of different samples at 212 nm was obtained by solid UV testing due to the high repeatability of the absorbance at 210-214 nm for three parallel experiments,and the dispersity of different samples was calculated through the established difference ***,the samples were characterized by XRD,IR,SEM,EDS,DSC and TG-MS,which confirmed that different mixing methods did not change the structure of the samples(XRD and IR),and the mixing uniformity improved with the increase of grinding strength and grinding time(SEM and EDS).The scientificity and feasibility of the difference equation were further verified by *** dispersity of nano-CuCr_(2)O_(4)exhibits a positive intrinsic relationship with its catalytic performance,and the uniformly dispersed nano-CuCr_(2)O_(4)significantly reduces the thermal decomposition temperature of ultrafine AP from 367.7 to 338.8℃.The TG-MS patterns show that the dispersed nano-CuCr_(2)O_(4)advanced the thermal decomposition process of ultrafine AP by about 700 s,especially in the high temperature decomposition stage,and the more concentrated energy release characteristic is beneficial to further enhance the energy performance of AP-based *** above conclusions show that the evaluation method of dispersity based on solid UV curves could pro

关键词： Nano-CuCr_(2)O_(4) Ultrafine AP Dispersity UVeVis diffuse reflectance spectroscopy Thermal decomposition

Co-alteration of Myc and RTK-RAS pathways defines a liver-metastatic propensity and immune-cold subgroup of pancreatic adenocarcinoma

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Genes & Diseases 2024年第3期11卷 47-50页

作者： Yuyuan Zhang Ziyang Zu Hui Xu Siyuan Weng Yuqing Ren Quan Cheng peng luo Jian Zhang Zaoqu Liu Xinwei Han Department of Interventional Radiology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China Interventional Institute of Zhengzhou University ZhengzhouHenan450052China Interventional Treatment and Clinical Research Center of Henan Province ZhengzhouHenan 450052China Department of Hepatobiliary and Pancreatic Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450052China Department of Respiratory and Critical Care Medicine The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China Department of Neurosurgery Xiangya HospitalCentral South UniversityChangshaHunan 410008China Department of Oncology Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong 510280China

Co-altered pathways refer to the phenomenon where multiple biological pathways exhibit aberrant changes simultaneously within the same tumor *** phenomenon can facilitate a better understanding of the mechanism and evolution of tumors and serve as a biological marker for diagnosing,classifying,and treating tumors.1 However,the nature of alteration occurrence and the impact on pancreatic adenocarcinoma(PAAD)remain *** SELECT algorithm was originally designed to systematically assess the evolutionary dependencies and their impact between altered genes in cancer for anticipating drug resistance and proposing alternative ***,to better characterize the etiology of PAAD and develop an improved risk assessment strategy,2 by utilizing SELECT,we identified a co-altered pathway subgroup of PAAD that demonstrated an elevated risk for unfavorable prognosis,a propensity for liver metastasis,and an immunologically cold microenvironment.

关键词： adenocarcinoma elevated alteration

Ambient Ozone Exposure, Semen Plasma Metabolites, and Sperm Quality Decline among Adult Men in Wuhan China

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Environment & Health 2024年第10期2卷 729-738页

作者： Yangchang Zhang Shi Zhao Wangnan Cao TREE Study Team Shengzhi Sun Qiang Zeng peng luo School of Public Health Capital Medical UniversityBeijing 100069P.R.China School of Public Health Tianjin Medical UniversityTianjin 300070P.R.China Tianjin Key Laboratory of Environment Nutrition and Public HealthTianjin Medical UniversityTianjin 300070P.R.China Department of Social Medicine and Health Education School of Public HealthPeking UniversityBeijing 100191P.R.China 不详 School of Public Health and Beijing Municipal Key Laboratory of Clinical Epidemiology Capital Medical UniversityBeijing 100069P.R.China Department of Occupational and Environmental Health School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430074P.R.China Key Laboratory of Environment and Health Ministry of Education&Ministry of Environmental ProtectionState Key Laboratory of Environmental Health(incubating)School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430074 HubeiP.R.China School of Public Health The Key Laboratory of Environmental Pollution Monitoring and Disease ControlMinistry of EducationGuizhou Medical UniversityGuiyang 550025P.R.China

Ambient ozone(O3)exposure may be associated with a reduction of semen quality,yet the potential biological mechanisms remain *** investigated the effects of certain seminal plasma metabolites on mediating the links between O3 exposure and the deterioration of semen *** untargeted metabolomics analysis was performed on semen samples of 200 Chinese adult men to determine candidate metabolites associated with characteristics of semen *** analysis was adopted to examine whether these metabolites modulated the links between O3 exposure and semen *** found a significant reduction in sperm concentration by−28.1%(95%CI:−41.7%,−11.3%),and sperm count by−29.2%(95%CI:−43.7%,−11.0%)associated with each 10μg/m3 increase in ambient O3 concentration during the period of sperm *** delineated 7 metabolites in seminal fluid that substantially mediated the links between O3 exposure and declined semen quality,including myristoleic acid,aspartyl-isoleucine,phenylethyl primeveroside,ACar(18:2),ACar(18:1),FAHFA(22:6/22:3),and LPS(22:5).Among these,myristoleic acid exhibited the most pronounced mediation effects,with its indirect effect of which accounts for 46.4%of the overall *** findings suggested that exposure to ozone decreased sperm quality by disrupting fatty acid metabolism,particularly myristoleic acid.

关键词： ozone exposure sperm quality adult men metabolomics

Impairment of Autophagic Flux After Hypobaric Hypoxia Potentiates Oxidative Stress and Cognitive Function Disturbances in Mice

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Neuroscience Bulletin 2024年第1期40卷 35-49页

作者： Shuhui Dai Yuan Feng Chuanhao Lu Hongchen Zhang Wenke Ma Wenyu Xie Xiuquan Wu peng luo Lei Zhang Fei Fei Zhou Fei Xia Li Department of Neurosurgery Xijing HospitalFourth Military Medical UniversityXi'an 710000China National Translational Science Center for Molecular Medicine and Department of Cell Biology Fourth Military Medical UniversityXi'an 710000China Department of Neurosurgery The Central Hospital of BaojiBaoji 721000China Department of Ophthalmology Xijing HospitalFourth Military Medical UniversityXi'an 710000China

Acute hypobaric hypoxic brain damage is a potentially fatal high-altitude *** plays a critical role in ischemic brain injury,but its role in hypo-baric hypoxia(HH)remains *** we used an HH chamber to demonstrate that acute HH exposure impairs autophagic activity in both the early and late stages of the mouse brain,and is partially responsible for HH-induced oxidative stress,neuronal loss,and brain *** autophagic agonist rapamycin only promotes the initiation of *** proteome analysis,a screen showed that protein dynamin2(DNM2)potentially regulates autophagic *** of DNM2 significantly increased the formation of autolysosomes,thus maintaining autophagic flux in combination with ***,the enhancement of autophagic activity attenuated oxidative stress and neurological deficits after HH *** results contribute to evidence supporting the conclusion that DNM2-mediated autophagic flux represents a new therapeutic target in HH-induced brain damage.

关键词： Autophagy-Proteomics Oxidative stress Hypobaric hypoxia-Brain injury

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甘肃方言表“肚脐”义的词考源

方言 2024年第2期46卷 196-201页

作者：雒鹏西北师范大学文学院兰州

甘肃方言表“肚脐”义的词,有“肚”[*tu]型和“腹”[*p'u]/[*spu]型两大类。“肚”[*tu]型使用地域较广,“腹”[*pu]/[*sp'u]型只在部分地方使用,二者大致呈互补分布。表“肚脐”义的词都为合成词,复合式的为偏正型,附加式的为后附型... 详细信息

甘肃方言表“肚脐”义的词,有“肚”[*tu]型和“腹”[*p'u]/[*spu]型两大类。“肚”[*tu]型使用地域较广,“腹”[*pu]/[*sp'u]型只在部分地方使用,二者大致呈互补分布。表“肚脐”义的词都为合成词,复合式的为偏正型,附加式的为后附型。甘肃方言里“腹”[*pu]/[*spu]型的说法早于“肚”[*tu']型。

关键词：甘肃方言中原官话兰银官话西南官话 “肚脐”义构词本字音变

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名词融合与复杂谓词的形成

汉语学习 2024年第1期 33-42页

作者：罗琼鹏南京大学文学院江苏南京210023

文章以及物化的“VN”型复杂谓词(“踩雷乐视、取道北京”)为出发点,引入跨语言视角,探索汉语名词融合的句法、语义机制以及类型特征。在句法上,“V”和“N”通过词根移位融合,然后和事件有关的其他论旨角色会提升到“N”原有的论元槽位... 详细信息

文章以及物化的“VN”型复杂谓词(“踩雷乐视、取道北京”)为出发点,引入跨语言视角,探索汉语名词融合的句法、语义机制以及类型特征。在句法上,“V”和“N”通过词根移位融合,然后和事件有关的其他论旨角色会提升到“N”原有的论元槽位,表现为“VN”结构携带旁格论元的情况。在语义上,“N”并非“V”独立的语义论元,而是对“V”的语义进行修饰,对“V”所述事件进行限定和细分,但不改变“V”的价位。及物化的“VN”型复杂谓词的产生,不仅证明汉语中存在丰富的名词融合现象,更表明名词融合内部存在不同的演化轨迹,呈现谱系特性。文章提出的将形式语义学与分布式形态学相结合的形态—语义界面思路,为处理汉语中次短语层面的语言现象提供了新的框架性构想。

关键词：名词融合动宾带宾旁格论元形态-语义界面分布式形态学