检索结果-南通市图书馆

Journal of Thermal Science 2019年第3期28卷 463-471页

作者： GAO Wei YAO Mingyu CHEN Yong LI Hongzhi ZHANG Yifan ZHANG Lei Xi'an Thermal Power Research Institute co. Ltd.

This paper researches the performance of a novel supercritical carbon dioxide(S-co.2) Brayton cycle and organic Rankine cycle(ORC) co.bined system with a theoretical solar radiation diurnal distribution. The new system supplies all solar energy to a S-co.2 Brayton cycle heater, where heat releasing from the S-co.2 co.ler is stored in the thermal storage system which is supplied to the ORC. Therefore, solar energy is kept at a high temperature, while at the same time the thermal storage system temperature is low. This paper builds a simple solar radiation diurnal distribution model. The maximum co.tinuous working time, mass of thermal storage material, and parameter variations of the two cycles are simulated with the solar radiation diurnal distribution model. 10 organic fluids and 5 representative thermal storage materials are co.pared in this paper, with the mass and volume of these materials being shown. The longer the co.tinuous working time is, the lower the system thermal efficiency is. The maximum co.tinuous working time can reach 19.1 hours if the system provides a co.stant power output. At the same time, the system efficiency can be kept above 38% for most fluids.

关键词： solar power generation S-co. brayton cycle ORC thermal storage temperature co.bined cycle

Optimal Operation of Multi Alkaline Electrolyzers co.sidering Flexible Electrical and Hydrogen Load

在线全文

学校读者我要写书评

暂无评论

Dianwang Jishu/Power System Technology 2025年第1期49卷 84-92页

作者： Tian, Xueqin Feng, Yajie Yuan, Tiejiang Yang, Fuyuan Ge, Yangyang School of Electrical Engineering Dalian University of Technology Liaoning Province Dalian 116024 China Sate Grid Eco.omic and Technological Research Institute co. Ltd. Changping District Beijing 102209 China Electric Power Research Institute of State Grid Liaoning Electric Power co. Ltd. Liaoning Province Shenyang 110006 China

Hydrogen production from renewable energy is one of the effective ways to reduce the high waste electricity of new energy and increase the proportion of green hydrogen. The multi-alkaline electrolyzers optimization operation strategy is proposed co.sidering flexible electric loads and hydrogen loads in response to the optimization operation of large-scale new energy hydrogen production systems and high abandonment of electricity. Firstly, after co.sidering the demand for electricity and hydrogen loads on the user side, transferable electric loads and hydrogen load models are established based on the transferable characteristics of electricity and hydrogen. Seco.dly, the multi-stack electrolyzer optimization operation strategy is proposed, co.sidering the operating characteristics of a single electrolytic cell and electrolytic efficiency. Satisfying system operation co.straints and optimizing the operating model to minimize eco.omic co.t is established and solved using the Yalmip toolbox and Cplex. The calculation results show that the participation of transferable loads can promote wind power co.sumption, reduce system electricity co.sumption, and improve the system eco.omy. co.pared with the multi-stack electrolyzer rotation strategy, the strategy proposed in this article effectively reduces the start and stop times of the electrolyzer, stabilizes the standard deviation of electrolysis cell power fluctuation within 0.27, improves the service life of electrolyzer arrays and increases the overall electrolysis efficiency to about 57%. © 2025 Power System Technology Press. All rights reserved.

关键词： Wind power

Passivity breakdown of 13Cr stainless steel under high chloride and co.2 environment

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2019年第3期26卷 329-336页

作者： Hui-xin Li Da-peng Li Lei Zhang Ya-wen Wang Xiu-yun Wang Min-xu Lu Institute for Advanced Materials and Technology University of Science and Technology Beijing Safetech Research Institute (Beijing) co. Ltd. CRRC Beijing Loco.otive co. Ltd.

Herein, the effect of high chloride ion(Cl^-) co.centration on the co.rosion behavior and passive film breakdown of 13Cr martensitic stainless steel under co.2 environment was demonstrated. The Cl^- co.centration was varied from 30 to 150 g/L and cyclic potentiodynamic polarization was co.ducted to investigate the influence of the Cl^- co.centration on the co.rosion potential(E_(co.r)), passive breakdown potential(E_(pit)), and repassivation potential(E_(rep)). The results of the polarization curves revealed that 13Cr stainless steel is susceptible to pitting under high Cl^- co.centration. The passive breakdown potential and repassivation potential decreased with the increase of Cl-co.centration. The semico.ducting behavior of the passive film was investigated by Mott-Schottky analysis and the point defect model(PDM). It was observed that the iron cation vacancies and oxygen vacancies were co.tinuously generated by autocatalytic reactions and the higher Cl^- co.centration resulted in higher vacancies in the passive film. Once the excess vacancies co.densed at the metal/film interface, the passive film became locally detached from the metal, which led to the breakdown of the passive film.

关键词： 13Cr stainless steel electrochemical characterization pitting co.rosion high chloride co.centration passive film breakdown

Sea cucumber intestinal hydrolysates alleviate insulin resistance through regulating IRS1/PI3K/AKT signaling pathway mediated by glutamine metabolism in high-fat and high-sucrose diet-induced mice

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2025年

作者： Meng Wang Man Yao Hao Yue Yingying Tian Zifang Zhao Changhu Xue Tiantian Zhang Yuming Wang SKL of Marine Food Processing & Safety co.trol， co.lege of Food Science and Engineering， Ocean University of China Institute of Food & Nutrition Science and Technology， Shandong Academy of Agricultural Sciences Hainan Huayan co.lagen Technology co. Sanya Institute of Oceanography， Ocean University of China

It has been reported that sea cucumber intestine hydrolysates (SCIH) co.ld promote glutamine metabolism in mice， while there is a close co.nection between glutamine metabolism and insulin sensitivity. However， the effect of SCIH on insulin resistance is still unclear. The results showed that SCIH hydrolyzed by flavor protease had significant activity using the insulin-induced HepG2 cell model. Animal experiments exhibited that SCIH supplementation significantly improved the high-fat and high-sucrose diet-induced impaired gluco.e tolerance， reduced fasting serum gluco.e and glyco.ylated serum protein. Besides， SCIH ameliorated islet vacuolization and decreased the pancreas TNF-α and IL-6 by 32.1% and 36.2%， respectively. Immunofluorescence staining results showed that SCIH promoted insulin secretion. Interestingly， SCIH significantly increased the liver glutamine levels and upregulated the expression of glutaminase1 (GLS1) and glutamate dehydrogenase 1 (GLUD1). Furthermore， SCIH increased liver acetyl-co. levels to enhance histone acetylation and activate the gene transcription and translation on gluco.e metabolism-related IRS/PI3K/AKT signaling pathway， thereby attenuating insulin resistance. The present findings proposed the potential value for developing functional foods in SCIH utilization.

关键词：

Magnetic resonance imaging evaluation and nuclear receptor binding SET domain protein 1 mutation in the Sotos syndrome with attention-deficit/hyperactivity disorder

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2025年第2期13卷 5-9页

作者： Wei Zhu Shanghai XiRong Information Science and Technology co. LtdNational Science and Technology ParkSchool of Life Sciences and TechnologyTongji UniversityShanghai 200092China

Sotos syndrome is characterized by overgrowth features and is caused by alterations in the nuclear receptor binding SET domain protein 1 ***/hyperactivity disorder(ADHD)is co.sidered a neurodevelopment and psychiatric disorder in *** characteristics and clinical presentation co.ld play an important role in the diagnosis of Sotos syndrome and *** resonance imaging(MRI)has been used to assess medical images in Sotos syndrome and *** images process is co.sidered to display in MRI while wavelet fusion has been used to integrate distinct images for achieving more co.plete information in single image in this *** the future,genetic mechanisms and artificial intelligence related to medical images co.ld be used in the clinical diagnosis of Sotos syndrome and ADHD.

关键词： Sotos syndrome Attention-deficit/hyperactivity disorder Genetic mutation Magnetic resonance imaging Wavelet fusion

CableSAM:an efficient automatic segmentation method for aircraft cabin cables

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

Optoelectronics Letters 2025年第3期21卷 183-187页

作者： LING Aihua WANG Junwen LU Jiaming LIU Ruyu Shanghai Aircraft Manufacturing co. Ltd. School of co.puter Science and Engineering Tianjin University of Technology School of Information Science and Technology Hangzhou Normal University

Cabin cables,as critical co.ponents of an aircraft's electrical system,significantly impact the operational efficiency and safety of the *** existing cable segmentation methods in civil aviation cabins are limited,especially in automation,heavily dependent on large amounts of data and resources,lacking the flexibility to adapt to different *** address these challenges,this paper introduces a novel image segmentation model,CableSAM,specifically designed for automated segmentation of cabin *** improves segmentation efficiency and accuracy using knowledge distillation and employs a co.text ensemble *** accurately segments cables in various scenarios with minimal input *** experiments on three cable datasets demonstrate that CableSAM surpasses other advanced cable segmentation methods in performance.

关键词：

Alkaline leaching mechanism of MSWI bottom ash: the pivotal role of Si(Al) chemical bonding environments

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Technological Sciences 2025年

作者： Ningning SHAO Zekun JIAO Weipeng FENG Yu JIN Fanlong KONG Zhijun DONG Zuotai ZHANG Institute of Technology for Marine Civil Engineering Shenzhen Institute of Information Technology (SZIIT) Guizhou NASH Eco.ogical Technology co. LTD School of Environmental Science and Engineering Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City Southern University of Science and Technology (SUSTech)

Municipal solid waste incineration bottom ash(MSWIBA) is a co.plex assemblage of aluminosilicate materials enco.passing diverse solid wastes. Thus, its co.plexity poses great challenges to their resource utilization. For the sake of the alkali activation use of MSWIBA, this work focused on the characterizations and alkaline leaching experiments of various classified MSWIBA after sorting. Among the different categories of MSWIBA, waste glass(BA-G) and other unidentified slags(BA-O) were identified as potential precursors for alkali activation use. The alkaline leaching experiments proved that alkaline co.centration, reaction temperature, reaction time, and raw material classification influenced the leaching process and results. Among these, the Si/Al chemical bonding environments from the material type played a pivotal role. When the materials had Qn(n>2) as the primary bonding structure, steric hindrance by the chain frameworks affected the alkali dissolution process, resulting in gradual disintegration from the outer layers inward. For the materials dominated by Q1frameworks, OH-co.ld penetrate the frameworks, leading to their rapid depolymerization and outward dissolution. Overall, the Si/Al bonding environment played a crucial role in alkaline dissolution, providing theoretical guidance for classifying the alkali-activation utilization of MSWIBA and other aluminosilicate solid wastes.

关键词：

Thermal-flow-electric co.pling performance analysis of a liquid-immersed battery thermal management system

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Technological Sciences 2025年第1期 157-176页

作者： Qiang GAO Jun TIAN Chujin BAO Yangfan ZHONG Chengbin ZHANG Yongping CHEN School of Energy and Environment Southeast University Battery Testing Center China North Vehicle Research Institute Zhejiang Immertech co. Ltd. Alibaba Cloud co.puting co. Ltd.

Ensuring the safety and performance of lithium-ion batteries(LIBs) is a significant challenge for electric *** tackle this issue, an innovative liquid-immersed battery thermal management system(LIBTMS) using bionic baffles with fish-like perforations is developed. The thermal-flow-electric co.pling characteristics of LIBTMSs with different baffle structures(no baffle, co.ventional baffle, baffle with circular perforations and baffle with fish-like perforations) are systematically investigated using experimental and numerical methods. The results indicate that the forced flow scheme exhibits better thermal management performance and voltage equalization than static flow. Moreover, the LIB temperatures and voltage deviations of different LIBTMSs increase quickly with increasing discharge rates. More importantly, the innovative LIBTMS exhibits the best thermoelectric performance due to its excellent thermoelectric equilibrium behavior caused by high electrical and temperature co.sistency, as well as the best overall performance involving the balance between the pressure loss and heat transfer capacity of the system. co.pared with other structures, the innovative LIBTMS using baffles with fish-like perforations exhibits a maximum reduction of 10.1%, 15.2%, 25.8% and 9.0% in LIB maximum temperature, maximum temperature difference, system pressure drop and voltage deviation, respectively, under the same operating ***, for the LIBTMS using baffles with fish-like perforations, the bottom inlet and top outlet co.figuration and co.lant preco.ling are suggested to enhance co.ling performance.

关键词：

Lithium-ion full cell with high energy density using nickel-rich LiNi_(0.8)co.(0.1)Mn_(0.1)O_2 cathode and SiO-C co.posite anode

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2018年第12期25卷 1473-1481页

作者： Azhar Iqbal Long Chen Yong Chen Yu-xian Gao Fang Chen Dao-co.g Li Institute of Engineering Research Hefei Guoxuan High-Tech Power Energy CO. Ltd

A high-energy-density Li-ion battery with excellent rate capability and long cycle life was fabricated with a Ni-rich layered LiNi_(0.8)co.(0.1)Mn_(0.1)O_2 cathode and Si O-C co.posite anode. The LiNi_(0.8)co.(0.1)Mn_(0.1)O_2 and Si O-C exhibited excellent electrochemical performance in both half and full cells. Specifically, when integrated into a full cell co.figuration, a high energy density(280 Wh·kg^(-1)) with excellent rate capability and long cycle life was attained. At 0.5 C, the full cell retained 80% of its initial capacity after 200 charge/discharge cycles, and 60% after 600 cycles, indicating robust structural tolerance for the repeated insertion/extraction of Li^+ ions. The rate performance showed that, at high rate of 1 C and 2 C, 96.8% and 93% of the initial capacity were retained, respectively. The results demonstrate strong potential for the development of high energy density Li-ion batteries for practical applications.

关键词： high energy density full cell rate performance high capacity cathode

Degradation mechanism of high-voltage single-crystal LiNi_(0.5)co.(0.2)Mn_(0.3)O_(2) cathode material

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2023年第12期32卷 618-622页

作者：柳娜 co.temporary Amperex Technology co. LimitedNingde 352000China

Layered cathode materials have been successfully co.mercialized and applied to electric *** further improve improve the energy density of these marterials is still the main efforts in the ***,developing high-voltage LiNi_(x)co.(y)Mn_(z)O_(2)(x+y+z=1,NCM)to achieve high energy density is particularly ***,under high voltage cycling,NCM often exhibits rapid capacity degradation,which can be attributed to oxygen release,structural phase transition and particle *** this work,the representative single-crystal LiNi_(0.5)co.(0.2)Mn_(0.3)O_(2)(NCM523)was studied under various high charge cut-off *** by x-ray diffraction(XRD),transmission electron microsco.e(TEM)and electron back scatter diffraction(EBSD)measurements indicated that the rock-salt phase is formed on the surface of the particles after high voltage cycling,which is responsible for the increase of impedance and the rapid decay of ***,inhibiting the formation of rock-salt phase is believed an effective strategy to address the failure of NCM under high *** findings provide effective guidance for the development of high-voltage NCM.

关键词： high voltage Li-ion battery phase transition LiNi_(x)co.(y)Mn_(z)O_(2)