检索结果-南通市图书馆

Power Flow Model for Medium-voltage Distribution systems Considering Measurement and structure Characteristics

Journal of Modern Power systems and Clean Energy 2024年第2期12卷 571-583页

作者： Zhengmei Lu Wei yan Dezhi Huang Junjie tang Ferdinanda Ponci Antonello Monti state Key Laboratory of Power Transmission Equipment&system security and New Technology Chongqing UniversityChongqing 400044China state Grid Zhejiang yiwu Power supply Company State Grid Zhejiang Electric Power CompanyYiwu 322001China Institute for Automation of Complex Power systems of the E.ON Energy Research Center at RWTH Aachen University Aachen52074Germany Digital Energy Fraunhofer FIT Aachen52072Germany IEEE

Medium-voltage distribution systems(MVDss)mainly consist of a feeder head,lines,distribution transformers,and the equivalent load or power supply interfaced with the distribution *** information of such load or power supply can be measured via the three-wattmeter method(THM)and the two-wattmeter method(TWM).The measurements can be used to perform the control of the power supply and simulate the characteristics of the load,so the models of the load and the power supply need to consider the measurement *** research works on three-phase power flow(PF)just consider the measurement characteristics of ***,the PF equation of the bus measured via TWM is firstly *** on conventional measurements,an accurate and general model of the grounded and ungrounded slack bus is ***,the influence arising from the connection type and angle shift of distribution transformers on the admittance matrix is considered,and thus a general three-phase transformer model is summarized,which is applicable for all the transformers mentioned ***,Newton's method is adopted to solve the PF calculation,and the performance of the proposed PF model is demonstrated through designed tests.

关键词： Medium-voltage distribution system three-phase power flow calculation measurement characteristic slack bus modeling distribution transformer

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

A High-Performance Mos_(2)-Based Visible-Near-Infrared Photodetector from Gateless Photogating Effect Induced by Nickel Nanoparticles

引用

Research 2024年第2期6卷 171-179页

作者： Ran Duan Weihong Qi Panke Li Kewei tang Guoliang Ru Weimin Liu state Key Laboratory of solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi'an 710072China shandong Laboratory of yantai Advanced Materials and Green Manufacturing Yantai 265503China state Key Laboratory of solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Recent advancements in two-dimensional materials have shown huge potential for optoelectronic *** is challenging to achieve highly effective and sensitive broadband photodetection based on Mos_(2)*** engineering,such as introducing vacancies,can narrow the bandgap and boost the separation of photogenerated carriers by defect states but leads to a slow response ***,we propose a nickel nanoparticle-induced gateless photogating effect with a unique energy band structure to enable the application of defect engineering and achieve high optoelectronic *** device based on Ni nanoparticle-decorated Mos_(2)with s vacancies exhibited high responsivities of 106.21 and 1.38 A W^(-1)and detectivities of 1.9×10^(12)and 8.9×10^(9)Jones under 532 and 980 nm illumination(visible to near infrared),respectively,with highly accelerated response *** strategy provides new insight into optimizing defect engineering to design high-performance optoelectronic devices capable of broadband photodetection.

关键词： defect Infrared illumination

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

Ionization Engineering of Hydrogels Enables Highly Efficient salt‑Impeded solar Evaporation and Night‑Time Electricity Harvesting

引用

Nano-Micro Letters 2024年第1期16卷 131-146页

作者： Nan He Haonan Wang Haotian Zhang Bo Jiang Dawei tang Lin Li school of Energy and Power Engineering Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of EducationDalian University of TechnologyDalian 116024People’s Republic of China

Interfacial solar evaporation holds immense potential for brine desalination with low carbon footprints and high energy ***,as a tunable material platform from the molecular level to the macroscopic scale,have been considered the most promising candidate for solar ***,the simultaneous achievement of high evaporation efficiency and satisfactory tolerance to salt ions in brine remains a challenging scientific bottleneck,restricting the widespread ***,we report ionization engineering,which endows polymer chains of hydrogels with electronegativity for impeding salt ions and activating water molecules,fundamentally overcoming the hydrogel salt-impeded challenge and dramatically expediting water evaporating in *** sodium dodecyl benzene sulfonate-modified carbon black is chosen as the solar *** hydrogel reaches a ground-breaking evaporation rate of 2.9 kg m−2 h−1 in 20 wt%brine with 95.6%efficiency under one sun irradiation,surpassing most of the reported *** notably,such a hydrogel-based evaporator enables extracting clean water from oversaturated salt solutions and maintains durability under different high-strength deformation or a 15-day continuous ***,on the basis of the cation selectivity induced by the electronegativity,we first propose an all-day system that evaporates during the day and generates salinity-gradient electricity using waste-evaporated brine at night,anticipating pioneer a new opportunity for all-day resource-generating systems in fields of freshwater and electricity.

关键词： solar evaporation Hydrogel evaporators salt impeding Ionization engineering Cyclic vapor-electricity generation

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

Gender Equality and the Risk Assessment of Corporate Financialization:An Analysis of the Increase in the Proportion of Female Executives

引用

social sciences in China 2024年第1期45卷 182-208页

作者： Fan Zuojun tang Jingjing China-AsEAN Research Institute Guangxi University Economics school Guangxi University

This paper empirically investigates the impact of the proportion of female executives on the financialization of enterprises using a sample of listed companies in the shanghai and shenzhen stock markets from *** studies tend to conclude that female executives are risk averse,preventing firms from participating in high-risk financial ***,the results of this paper show that there is a positive relationship between the proportion of female executives and the degree of corporate financialization,with an increase of 1 percent in the proportion of female executives leading to an increase of 3.8 percent in the degree of corporate *** tests show that gender inequality is a possible mechanism influencing female executives'financial investment preferences in the unique gender culture context of *** paper expands the research on the impact of non-institutional factors on corporate financialization,and also points out that unilaterally pursuing an increase in the proportion of female executives does not reduce the risk of corporate financialization,and that only an overall increase in the proportion of female executives can reduce the risk of corporate *** gender equality at the social level can fundamentally reflect women's risk aversion characteristics and encourage enterprises to make more stable investment decisions.

关键词： female executives female status corporate financialization

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

Experimental study on the sandstone abrasiveness via mineral composition and microstructure analysis

引用

PETROLEUM 2024年第3期10卷 440-445页

作者： shi, Xiangchao tang, yang Chen, shuai Gao, Leiyu Wang, yuming southwest Petr Univ State Key Lab Oil & Gas Reservoir Geol & Exploitat Chengdu 610500 Peoples R China

Rock abrasiveness is an important factor affecting the tool's lifetime and efficiency in breaking a rock. Characterizing rock abrasiveness helps in the design, optimization, and mean-life prediction of tools. Xray diffraction, cast thin section analysis, and CERCHAR abrasiveness tests were performed on 18 different sandstones to characterize rock abrasiveness and explore new methods for characterization. The relationship between the mineral composition and microstructure of sandstone and abrasiveness was investigated. The results show that different structural maturities have varying effects on abrasiveness. In addition, the higher the structural maturity, the more the abrasiveness. Furthermore, in sandstones of the same structural maturity, the abrasiveness increases with equivalent quartz content (EQC). The texture coefficient (TC) and CERCHAR abrasiveness index (CAI) of sandstones with the same structural maturity showed a good linear relationship. Moreover, the correlation coefficients considering the combined parameters are above 0.85. Therefore, obtaining the microstructure and mineral composition of sandstone can effectively characterize rock abrasiveness. It also provides a new method for predicting the abrasiveness of the rock in the well. (c) 2023 southwest Petroleum University. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC By-NC-ND license (http:// ***/licenses/by-nc-nd/4.0/).

关键词： Abrasiveness Microstructure Mineral compositions structural maturity Equivalent quartz content sandstone CERCHAR ABRAsIVITy INDEX GEOMECHANICAL PROPERTIEs ROCK sTRENGTH CAI DRILLABILITy PREDICTION TEXTURE DRILL WEAR

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

Recent advancement of sonogenetics:A promising noninvasive cellular manipulation by ultrasound

引用

Genes & Diseases 2024年第5期11卷 163-182页

作者： Jin tang Mingxuan Feng Dong Wang Liang Zhang Ke yang Pediatric Research Institute Children’s Hospital of Chongqing Medical UniversityNational Clinical Research Center for Child Health and DisordersMinistry of Education Key Laboratory of Child Development and DisordersChina International Science and Technology Cooperation Base of Child Development and Critical DisordersChongqing Engineering Research Center of Stem Cell TherapyChongqing 400014China Department of Ultrasound The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Tongji Medical College Huazhong University of Science and TechnologyWuhanHubei 430074China

Recent advancements in biomedical research have underscored the importance of noninvasive cellular manipulation ***,a method that uses genetic engineering to produce ultrasound-sensitive proteins in target cells,is gaining prominence along with optogenetics,electrogenetics,and *** stimulation with ultrasound,these proteins trigger a cascade of cellular activities and *** traditional ultrasound modalities,sonogenetics offers enhanced spatial selectivity,improving precision and safety in disease *** technology broadens the scope of non-surgical interventions across a wide range of clinical research and therapeutic applications,including neuromodulation,oncologic treatments,stem cell therapy,and *** current literature predominantly emphasizes ultrasonic neuromodulation,this review offers a comprehensive exploration of *** discuss ultrasound properties,the specific ultrasound-sensitive proteins employed in sonogenetics,and the technique’s potential in managing conditions such as neurological disorders,cancer,and ophthalmic diseases,and in stem cell *** objective is to stimulate fresh perspectives for further research in this promising field.

关键词： Mechanosensitive channel Neuromodulation sonogenetics Ultrasound Ultrasound-sensitive protein

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

MOF-based magnetic microrobot swarms for pH-responsive targeted drug delivery

引用

science China Chemistry 2024年第4期67卷 1216-1223页

作者： Qinyi Cao yifan Zhang yanping tang Changjin Wu Jizhuang Wang Dan Li College of Chemistry and Materials science Jinan UniversityGuangzhou 510632China Guangdong Provincial Key Laboratory of Functional supramolecular Coordination Materials and Applications Jinan UniversityGuangzhou 510632China Guangdong Provincial Key Laboratory of spine and spinal Cord Reconstruction The Fifth Affiliated Hospital(Heyuan Shenhe People’s Hospital)Jinan UniversityHeyuan 517000China JNU-HKUsT Joint Laboratory for Neuroscience and Innovative Drug Research College of PharmacyJinan UniversityGuangzhou 510632China Department of Chemistry The University of Hong KongHong KongChina

Metal-organic frameworks(MOFs)hold significant potential as vehicles for drug delivery due to their expansive specific surface area,biocompatibility,and versatile ***,magnetically actuated micro/nano-robots(MNRs)offer distinct advantages,such as untethered and precise *** fusion of these technologies presents a promising avenue for achieving non-invasive targeted drug ***,we report a MOF-based magnetic microrobot swarm(MMRs)for targeted *** approach overcomes limitations associated with a single MNR,including limited drug loading and the risk of loss during *** select Zeolitic Imidazolate Framework-8(ZIF-8)as the drug vehicle for its superior loading potential and p H-sensitive *** design incorporates magnetic responsive components into the one-pot synthesis of Fe@ZIF-8,enabling collective behaviors under *** the yaw angle of alternating magnetic fields and nanoparticles'amount,the MMRss with controllable size achieve instantaneous transformation among different configurations,including vortex-like swarms,chain-like swarms,and elliptical swarms,facilitating adaptation to environmental *** to the subcutaneous T24 tumor site,the MMRss with encapsulated doxorubicin(DOX)automatically degrade and release the drug,leading to a dramatic reduction of the tumor in *** investigation signifies a significant advancement in the integration of biodegradable MOFs into microrobot swarms,ushering in new avenues for accurate and non-invasive targeted drug delivery.

关键词： magnetic microrobot swarm MOF nanoparticles magnetic propulsion pH-responsive drug release targeted drug delivery

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

self-cleaning sERs sensor based on flexible Ni_(3)s_(2)/Mos_(2)@Ag@PDMs composites for label-free multiplex volatile organic compounds detection

引用

Nano Research 2024年第6期17卷 5529-5539页

作者： Xinyue song yongzheng Zhang Xiaohui Ren Dongyan tang Xuelin Zhang Xin Li MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and storage School of Chemistry and Chemical EngineeringState Key Lab of Urban Water Resource and EnvironmentHarbin Institute of TechnologyHarbin 150090China College of Textile and Clothing Yancheng Institute of TechnologyYancheng 224051China MEMs Center Harbin Institute of TechnologyHarbin 150001China

Flexible self-cleaning surface-enhanced Raman scattering(sERs)sensors are highly desirable for the detection of various environmental pollutants,including volatile organic compounds(VOCs).However,achieving sensitive detection without labeling and ensuring efficient cyclic use remain significant ***,we introduce a direct approach to create a versatile Ni_(3)s_(2)/Mos_(2)@Ag@PDMs(PDMs=polydimethylsiloxane)composite sERs substrate using chemical vapor deposition *** produced substrate shows outstanding performance,offering extremely low detection sensitivity(1.0×10^(−12)M 4-aminobenzenethiol)and high enhancement factors(approximately 107).The interactions between the rod-shaped Ni_(3)s_(2)/Mos_(2)@Ag heterostructure and the molecules facilitate the transfer of charge,resulting in an increased electric field enhancement of the exciton *** has the dual benefit of providing a self-cleaning effect and enhancing sERs ***,the substrate enables sensitive detection of VOCs gas molecules without the need for labels,achieving a minimum detectable concentration as low as 1 ppm for o-dichlorobenzene,due to the preconcentration effect of *** calculations further explain the combined effect of electromagnetic and chemical enhancement in this composite *** utilizing the developed visual sERs barcode,quick multiple detection and analysis of mixtures can be *** flexible and versatile sERs technique has significant potential for on-site detection and analysis of environmental pollutants,opening the doors for the development of a wearable in-situ sERs sensing platform.

关键词： surface-enhanced Raman scattering(sERs) quantitative detection recyclable detection volatile organic compounds(VOCs) chemical vapor deposition(CVD)

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

stress relaxation properties of calcium silicate hydrate:a molecular dynamics study

引用

Journal of Zhejiang University-science A(Applied Physics & Engineering) 2024年第2期25卷 97-115页

作者： Zhicheng GENG shengwen tang yang WANG Hubao A Zhen HE Kai WU Lei WANG state Key Laboratory of Water Resources Engineering and Management Wuhan UniversityWuhan430072China Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education School of Materials Science and EngineeringTongji UniversityShanghai200092China College of Materials science and Engineering Xi’an University of Architecture and TechnologyXi’an710055China

The time-dependent viscoelastic response of cement-based materials to applied deformation is far from fully understood at the atomic *** silicate hydrate(C-s-H),the main hydration product of Portland cement,is responsible for the viscoelastic mechanism of cement-based *** this study,a molecular model of C-s-H was developed to explain the stress relaxation characteristics of C-s-H at different initial deformation states,Ca/si ratios,temperatures,and water contents,which cannot be accessed *** stress relaxation of C-s-H occurs regardless of whether it is subjected to initial shear,tensile,or compressive deformation,and shows a heterogeneous *** plays a crucial role in the stress relaxation process.A large Ca/si ratio and high temperature reduce the cohesion between the calcium-silicate layer and the interlayer region,and the viscosity of the interlayer region,thereby accelerating the stress relaxation of *** effect of the hydrogen bond network and the morphology of C-s-H on the evolution of the stress relaxation characteristics of C-s-H at different water contents was elucidated by nonaffine mean squared *** results shed light on the stress relaxation characteristics of C-s-H from a microscopic perspective,bridging the gap between the microscopic phenomena and the underlying atomic-level mechanisms.

关键词： Calcium silicate hydrate(C-s-H) stress relaxation Ca/si ratio Temperature Water content Atomic simulation

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

Piperine regulates the circadian rhythms of hepatic clock gene expressions and gut microbiota in high-fat diet-induced obese rats

引用

Food science and Human Wellness 2024年第3期13卷 1617-1627页

作者： Weiyun Zhang Chi-tang Ho Wenlian Wei Jie Xiao Muwen Lu Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods College of Food ScienceSouth China Agricultural UniversityGuangzhou 510642China Department of Food science Rutgers UniversityNew Brunswick 08901USA

The interplay between the host circadian clock and microbiota has significant influences on host metabolism processes,and circadian desynchrony triggered by high-fat diet(HFD)is closely related to metabolic *** this study,the modulatory effects of piperine(PIP)on lipid metabolism homeostasis,gut microbiota community and circadian rhythm of hepatic clock gene expressions in obese rats were *** sprague-Dawley(sD)rats were fed with normal diet(ND),HFD and HFD supplemented with PIP,*** 9 weeks,rats were sacrificed with tissue and fecal samples collected for circadian *** showed that chronic PIP administration ameliorated the obesity-induced alterations in lipid metabolism and dysregulation of hepatic clock gene expressions in obese *** gut microbial communities studied through 16s rRNA sequencing showed that PIP ameliorated the imbalanced nicrobiota and recovered the circadian rhythm of Lactobacillaceae,Desulfovibrionaceae,Paraprevotellaceae,and *** fecal metabolic profiles indicated that 3-dehydroshikimate,cytidine and lithocholyltaurine were altered,which were involved in the amino acid and fatty acid metabolism *** findings could provide theoretical basis for PIP to work as functional food to alleviate the lipid metabolism disorder,circadian rhythm misalignment,and gut microbiota dysbiosis with wide applications in the food and pharmaceutic industries.

关键词： Piperine Circadian clock Obesity Gut microbiota

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：