检索结果-南通市图书馆

A Scenario-classification Hybrid-based Banding Method for Power Transfer Limits of Critical Inter-corridors

Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 547-560页

作者： Lidong Yi Maosheng Ding Jili Wang Gao Qiu Fei Xue Ji'ang Liu yuxiong huang Gengfeng Li Junyong Liu State Grid Ningxia Electric Power Co. Ltd.YinchuanChinaand M.Ding is also with State Grid Ningxia Electric Power Research InstituteYinchuanChina Northwest Branch State Grid Corporation of ChinaXi’anChina School of Electrical Engineering Sichuan UniversityChengduChina State Grid Ningxia Electric Power Research Institute Yinchuan YinchuanChina School of Electrical Engineering Xi’an Jiaotong UniversityXi’anChina IEEE

To secure power system operations,practical dispatches in industries place a steady power transfer limit on critical inter-corridors,rather than high-dimensional and strong nonlinear stability ***,computational complexities lead to over-conservative pre-settings of transfer limit,which further induce undesirable and non-technical congestion of power *** conquer this barrier,a scenario-classification hybrid-based banding method is proposed.A cluster technique is adopted to separate similarities from historical and generated operating condition *** a practical rule,transfer limits are approximated for each operating ***,toward an interpretable online transfer limit decision,costsensitive learning is applied to identify cluster affiliation to assign a transfer limit for a given *** this stage,critical variables that affect the transfer limit are also picked out via mean impact *** enables us to construct low-complexity and dispatcher-friendly rules for fast determination of transfer *** numerical case studies on the IEEE 39-bus system and a real-world regional power system in China illustrate the effectiveness and conservativeness of the proposed method.

关键词： Transfer limit transfer capability power transfer inter-corridor cluster cost-sensitive learning banding power system operation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Microplastics’Aging Processes in the Aquatic Environment:Aging Mechanisms,Altered Environmental Behaviors and Ecotoxicity

引用

Chemical Research in Chinese Universities 2023年第3期39卷 378-388页

作者： HU Yongrong YING Siying huang yuxiong Tsinghua-Berkeley Shenzhen Institute(TBSI) Shenzhen International Graduate SchoolTsinghua

Microplastics(MPs)have been one of the most concerned environmental issues since the 21st *** are plastic particles with diameters less than 5 mm,which are widely sourced in the aquatic *** being released into the aquatic environment,MPs would experience complicated physical,chemical and biological aging processes driven by mechanical forces,photooxidation,and biological degradation,which would result in changes in MPs’physicochemical properties,such as the particle size,specific surface area,hydrophobicity,crystallinity,*** this review,we have illustrated the current study status on MPs’environmental aging processes and pointed out the knowledge ***’aging processes would consequentially influence MPs’interaction with the co-existing organic and inorganic pollutants in the aquatic environment as well as lead to the leaching of chemical additives involved in plastic production,including plasticizers and flame retardants,which can trigger high ecotoxicity to the aquatic ***,aged MPs would cause ecotoxicity to aquatic organisms via bioaccumulation,biomagnification,and indirect carrier *** review would provide an in-depth overview of MPs’environmental aging processes and consequential ecotoxicity implications,as well as propose future research needs.

关键词： Microplastics Aging process Environmental behavior Toxicity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Reinventing MoS2 Co-catalytic Fenton reaction:Oxygen-incorporation mediating surface superoxide radical generation

引用

Nano Research 2022年第3期15卷 1973-1982页

作者： Xianjun Tan Wenhui Ding Zhenying Jiang Linxiao Sun yuxiong huang Environmental Science and New Energy Technology Research Center Tsinghua-Berkeley Shenzhen Institute(TBSI)Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

To better understand the mechanisms of hydrogen peroxide(H_(2)O_(2))’s decomposition and reactive oxygen species(ROS)’s formation on the catalyst’s surface is always a critical issue for the environmental application of Fenton/Fenton-like *** here report a new approach to activate H_(2)O_(2) in a co-catalytic Fenton system with oxygen incorporated MoS2,namely MoS_(2−x) O_(x) *** MoS_(2−x) O_(x) nanosheets assisted co-catalytic Fenton system exhibited superior degradation activity of emerging antibiotic contaminants(e.g.,sulfamethoxazole).Combining density functional theory(DFT)calculation and experimental investigation,we demonstrated that oxygen incorporation could improve the intrinsic conductivity of MoS_(2−x) O_(x) nanosheets and accelerate surface/interfacial charge transfer,which further leads to the efficacious activation of H_(2)O_(2).Moreover,by tuning the oxygen proportion in MoS_(2−x) O_(x) nanosheets,we are able to modulate the generation of ROS and further direct the oriented-conversion of H_(2)O_(2) to surface-bounded superoxide radical(·O_(2−surface)).It sheds light on the generation and transformation of ROS in the engineered system(e.g.,Fenton,Fenton-like reaction)for efficient degradation of persistent pollutants.

关键词： Co-catalytic Fenton reaction MoS2 nanosheets reactive oxygen species(ROS) superoxide radical antibiotics’degradation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

城市弹性电网极端灾害防御与恢复技术

引用

供用电 2024年第8期41卷 15-24,53页

作者：荣烜曼别朝红黄玉雄叶宇鑫李更丰西安交通大学陕西西安710049 广东电网有限责任公司电力调度控制中心广东广州510220

随着“双碳”目标的提出和推进,城市电网作为电力保障的重要环节,逐渐呈现出新的形态。分布式能源大规模接入、电力电子设备广泛应用和可控负荷推广使用,使得城市电网能源生产、传输、消费方式发生深刻变化。近年来,极端灾害频发,对城... 详细信息

随着“双碳”目标的提出和推进,城市电网作为电力保障的重要环节,逐渐呈现出新的形态。分布式能源大规模接入、电力电子设备广泛应用和可控负荷推广使用,使得城市电网能源生产、传输、消费方式发生深刻变化。近年来,极端灾害频发,对城市电网产生严重威胁,亟须建设城市弹性电网,从灾前规划、灾中运行、灾后恢复各个环节提升城市电网应对极端灾害的能力。首先,从城市弹性电网特征出发,分析城市电网弹性研究现状以及评估、规划、调度和恢复等方面所面临的挑战;然后,针对城市弹性电网4类核心技术,总结城市弹性电网极端灾害防御与恢复关键问题及核心方法,介绍我国城市电网弹性提升建设实践;最后,对城市弹性电网极端灾害防御与恢复技术发展路径进行展望。

关键词：城市电网弹性评估弹性电网优化规划负荷恢复

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Single-atomic Zn-(C/N/O)lithiophilic sites induced stable lithium plating/stripping in anode-free lithium metal battery

引用

Nano Research 2023年第8期16卷 11473-11485页

作者： Shifei huang Sirong Lu Yao Lv Nanrui Li Zhenwei Wu Geng Zhong Xiaolong Ren Yufeng Wang Bo Sun yuxiong huang Feiyu Kang Yidan Cao Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Tsinghua-Berkeley Shenzhen Institute Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China College of Sciences and Institute for Sustainable Energy Shanghai UniversityShanghai 200444China Shell Catalysts&Technologies Shell Technology Center HoustonHouston TX 77082-3101USA Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

For anode-free lithium metal battery,lithiophilic surface modification on the current collector can effectively reduce the lithium nucleation barrier,so as to regulate the electrodeposition of ***,atomically dispersed Zn-(C/N/O)lithiophilic sites in the amorphous carbon medium were introduced onto Cu by an in-situ induced ion coordination chemistry strategy to get the modified Zn@NC@RGO@Cu current collector.X-ray absorption spectroscopy(XAS)combined with scanning transmission electron microscopy in high angle annular dark field(STEM-HAADF)analysis proved the single atomic state of the zinc sites surrounded by C,N,and O with a coordination number of~*** to the electrochemical tests and first principle calculations,the ultra-uniformly dispersed Zn-(C/N/O)sites at the atomic level can effectively improve the lithium affinity,reduce the energy barrier for lithium nucleation,homogenize the lithium nucleation,and enhance an inorganic lithium compounds rich solid electrolyte interphase *** a result,the nucleation overpotential of lithium on the modified current collector was reduced to 7.7 mV,which was 5.4 times lower than that on bare *** lithium nucleation and deposition enabled stable Li plating/stripping and elevated Coulombic efficiency of 98.95%in Li||Cu cell after>850 *** retention of 89.7%was successfully achieved in the anode-free lithium metal battery after 100 cycles.

关键词： single atomic zinc carbon lithiophilic sites lithium dendrite anode-free

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photo-induced surface frustrated Lewis pairs for promoted photocatalytic decomposition of perfluorooctanoic acid

引用

Frontiers of Environmental Science & Engineering 2023年第1期17卷 27-32页

作者： Xianjun Tan Zhenying Jiang yuxiong huang Tsinghua-Berkeley Shenzhen Institute(TBSI) Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

Heterogeneous photocatalysis has gained substantial research interest in treating per-and polyfluoroalkyl substances(PFAS)-contaminated ***,sluggish degradation kinetics and low defluorination efficiency compromise their practical ***,we report a superior photocatalyst,defected Bi_(3)O(OH)(PO_(4))_(2),which could effectively degrade typical PFAS,perfluorooctanoic acid(PFOA),with high defluorination *** UV light irradiation could in situ generate oxygen vacancies on Bi_(3)O(OH)(PO_(4))_(2) through oxidation of the lattice hydroxyls,which further promotes the formation of Lewis acidic coordinately unsaturated bismuth ***,the Lewis acidic sites couple with the proximal surface hydroxyls to constitute the surface frustrated Lewis pairs(SFLPs).With the in-depth spectroscopic analysis,we revealed that the photo-induced SFLPs act as collection centers to effectively adsorb PFOA and endow accessible pathways to transfer photogenerated holes to PFOA ***,activation of the terminal carboxyl,a ratelimiting step for PFOA decomposition,could be easily achieved over the defected Bi_(3)O(OH)(PO_(4))_(2) *** results suggest that SFLPs exhibit great potential in developing highly efficient photocatalysts to degrade persistent organic pollutants.

关键词： Heterogeneous photocatalysis Surface frustrated Lewis pairs Perfluorooctanoic acid Defluorination efficiency Environmental remediation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Component importance assessment of power systems for improving resilience under wind storms

引用

Journal of Modern Power Systems and Clean Energy 2019年第4期7卷 676-687页

作者： Gengfeng LI Gechao huang Zhaohong BIE Yanling LIN yuxiong huang State Key Laboratory of Electrical Insulation and Power Equipment Shaanxi Key Laboratory of Smart GridXi’an Jiaotong UniversityXi’an 710049China

Increasingly natural disasters and man-made malicious attacks threaten the power *** the resilience has become an inevitable requirement for the development of power *** importance assessment of components is of significance for resilience improvement,since it plays a crucial role in strengthening grid structure,designing restoration strategy,and improving resource allocation efficiency for disaster prevention and *** paper proposes a component importance assessment approach of power systems for improving resilience under wind ***,the component failure rate model under wind storms is *** to the model,system states under wind storms can be sampled by the non-sequential Monte Carlo simulation *** each system state,an optimal restoration model is then figured out by solving a component repair sequence optimization model considering crew *** distribution functions of component repair moment can be obtained after a sufficient system state *** Copeland ranking method is adopted to rank the component ***,the feasibility of the proposed approach is validated by extensive case studies.

关键词： Component importance Resilience Copeland score Non-sequential Monte Carlo simulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of manufactured nanomaterials on algae:Implications and applications

引用

Frontiers of Environmental Science & Engineering 2022年第9期16卷 135-150页

作者： yuxiong huang Manyu Gao Wenjing Wang Ziyi Liu Wei Qian Ciara Chun Chen Xiaoshan Zhu Zhonghua Cai Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China Southern Laboratory of Ocean Science and Engineering(Guangdong Zhuhai)Zhuhai 519000China

The wide application of manufactured nanomaterials(MNMs)has resulted in the inevitable release of MNMs into the aquatic environment along their life *** the primary producer in aquatic ecosystems,algae play a critical role in maintaining the balance of ecosystems’energy flow,material circulation and information ***,thoroughly understanding the biological effects of MNMs on algae as well as the underlying mechanisms is of vital *** conducted a comprehensive review on both positive and negative effects of MNMs on algae and thoroughly discussed the underlying *** general,exposure to MNMs may adversely affect algae’s gene expression,metabolites,photosynthesis,nitrogen fixation and growth *** major mechanisms of MNMs-induced inhibition are attributed to oxidative stress,mechanical damages,released metal ions and light-shielding ***,the rational application of MNMs-algae interactions would promote valuable bioactive substances production as well as control biological and chemical *** review could provide a better understanding of the biological effects of MNMs on algae and narrow the knowledge gaps on the underlying *** would shed light on the investigation of environmental implications and applications of MNMs-algae interactions and meet the increasing demand for sustainable nanotechnology development.

关键词： Manufactured nanomaterials Algae Mechanisms Effects Implications Applications

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cooperative localization methods of autonomous underwater vehicle swarm integrated with inverted ultrashort baseline

引用

Chinese Journal of Acoustics 2024年第1期43卷 1-22页

作者： LIU Feng WANG yuxiong CHEN Huifang XIE Lei College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027 Zhejiang Provincial Laboratory of Information Processing Communication and NetworkingHangzhou 310027 Zhoushan Ocean Research Center Zhejiang UniversityZhoushan 316021

A cooperative localization factor graph for the autonomous underwater vehicle(AUV) swarm integrated with inverted ultrashort baseline(iUSBL) is constructed. Two cooperative localization methods of slave AUV in an AUV swarm are proposed, namely the extended Kalman filter(EKF)-based cooperative localization method and particle belief propagation(BP)-based cooperative localization method, where the effect of the positioning error of leader AUV is mitigated. For the EKF-based cooperative localization method, the state of the slave AUV is reconstructed with the positioning information of leader AUV to achieve cooperative localization. In the particle-BP-based cooperative localization method,the measurement particles are generated to realize cooperative localization. The proposed methods can solve the poor real-time problem of traditional methods, and only require oneway acoustic positioning transmission measurement to realize the localization of the slave AUV. Simulation results show that the two proposed cooperative localization methods work well for slave AUVs with different localization abilities. Compared with the dead-reckoning method, the localization errors of two proposed methods are reduced by more than 80%,and the positioning error accumulation is effectively suppressed. Furthermore, the proposed cooperative localization methods can operate normally under a high packet loss rate of the underwater acoustic channel, and the localization performance is not significantly degraded.

关键词： underwater autonomous cooperative

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

粤语喻母字中的喉擦音声母

引用

语言科学 2015年第6期14卷 628-639页

作者：黄玉雄华东师范大学中文系上海200241

粤方言部分喻母开口字读喉擦音,与喻母字的近音及零声母呈互补分布兼叠置分布状态。从分布比例及谐声材料看,喻母字的喉擦音是云母、以母合流于近音之后形成的,并不是云母、匣母作为喉擦音对以母产生"类化"的结果。有材料显示,粤语喻母... 详细信息

粤方言部分喻母开口字读喉擦音,与喻母字的近音及零声母呈互补分布兼叠置分布状态。从分布比例及谐声材料看,喻母字的喉擦音是云母、以母合流于近音之后形成的,并不是云母、匣母作为喉擦音对以母产生"类化"的结果。有材料显示,粤语喻母喉擦音与壮语r声类存在对应,为r声类演变规则制约下形成的台语底层成分,是汉语与壮语接触形成的石化现象之一。这个声母的演进过程与衰变趋势分别受制于台语和汉语的音变规则,与自主音变相区别,属于内部音变中的受控音变。

关键词：喻母字喉擦音粤语历史层次受控音变

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：