检索结果-南通市图书馆

Revealing the Role of Hydrogen in Highly Efficient Ag-Substituted CZTSSe Photovoltaic Devices:Photoelectric Properties Modulation and Defect Passivation

引用

Nano-Micro Letters 2025年第4期17卷 166-180页

作者： Xiaoyue Zhao Jingru Li Chenyang Hu Yafang Qi Zhengji Zhou Dongxing Kou Wenhui Zhou Shengjie Yuan Sixin Wu The Key Laboratory for Special Functional Materials of MOE School of Nanoscience and Materials EngineeringNational and Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologyCollaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004People’s Republic of China

The presence of SnZn-related defects in Cu_(2)ZnSn(S,Se)_(4)(CZTSSe)absorber results in large irreversible energy loss and extra irreversible electron-hole non-radiative recombination,thus hindering the efficiency enhancement of CZTSSe *** the incorporation of Ag in CZTSSe can effectively suppress the SnZn-related defects and significantly improve the resulting cell performance,an excellent efficiency has not been achieved to date primarily owing to the poor electrical-conductivity and the low carrier density of the CZTSSe film induced by Ag ***,this study exquisitely devises an Ag/H co-doping strategy in CZTSSe absorber via Ag substitution programs followed by hydrogen-plasma treatment procedure to suppress SnZn defects for achieving efficient CZTSSe ***-depth investigation results demonstrate that the incorporation of H in Ag-based CZTSSe absorber is expected to improve the poor electrical-conductivity and the low carrier density caused by Ag ***,the C=O and O-H functional groups induced by hydrogen incorporation,serving as an electron donor,can interact with under-coordinated cations in CZTSSe material,effectively passivating the SnZn-related ***,the incorporation of an appropriate amount of Ag/H in CZTSSe mitigates carrier non-radiative recombination,prolongs minority carrier lifetime,and thus yields a champion efficiency of 14.74%,showing its promising application in kesterite-based CZTSSe devices.

关键词： CZTSSe Ag/H co-doping Photoelectric properties modulation Defect passivation Non-radiative recombination

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

engineering nanoparticle structure at synergistic Ru-Na interface for integrated CO_(2)capture and hydrogenation

引用

Journal of Energy Chemistry 2025年第1期100卷 779-791页

作者： Hanzi Liu Ling Cen Xinlin Xie Lei Liu Zhao Sun Zhiqiang Sun Hunan engineering research center of Clean and Low-Carbon Energy technology School of Energy Science and EngineeringCentral South UniversityChangsha 410083HunanChina

The development of dual functional material for cyclic CO_(2)capture and hydrogenation is of great significance for converting diluted CO_(2)into valuable fuels,but suffers from kinetic limitation and deactivation of adsorbent and ***,we engineered a series of RuNa/γ-Al_(2)O_(3)materials,varying the size of ruthenium from single atoms to clusters/*** coordination environment and structure sensitivity of ruthenium were quantitatively investigated at atomic *** findings reveal that the reduced Ru nanoparticles,approximately 7.1 nm in diameter with a Ru-Ru coordination number of 5.9,exhibit high methane formation activity and selectivity at 340°*** Ru-Na interfacial sites facilitate CO_(2)migration through a deoxygenation pathway,involving carbonate dissociation,carbonyl formation,and ***-situ experiments and theoretical calculations show that stable carbonyl intermediates on metallic Ru nanoparticles facilitate heterolytic C–O scission and C–H bonding,significantly lowering the energy barrier for activating stored CO_(2).

关键词： CO_(2)capture Hydrogenation Ru-Na interface Dual functional material Reaction mechanism

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

Tauroursodeoxycholic acid targets HSP90 to promote protein homeostasis and extends healthy lifespan

引用

Science China(Life Sciences) 2025年第2期68卷 416-430页

作者： Jia-Yu Liu Yao Wang Yue Guo Run-Qi Zheng Yun-Ying Wang Yan-Yan Shen Yan-Hong Liu Ai-Ping Cao Rui-Bo Wang Bo-Yang Xie Shuai Jiang Qiu-Ying Han Jing Chen Fang-Ting Dong Kun He Na Wang Xin Pan Tao Li Tao Zhou Ai-Ling Li Qing Xia Wei-Na Zhang Nanhu Laboratory National Center of Biomedical AnalysisBeijing 100850China

As the elderly population expands,the pursuit of therapeutics to reduce morbidity and extend lifespan has become increasingly *** an FDA-approved drug for chronic cholestatic liver diseases,tauroursodeoxycholic acid(TUDCA),a natural bile acid,offers additional health benefits beyond liver ***,we show that TUDCA extends the lifespan and healthspan of ***,oral supplementation of TUDCA improves fitness in old mice,including clinically relevant phenotypes,exercise capacity and cognitive ***,TUDCA treatment drives broad transcriptional changes correlated with anti-aging ***,we discover that TUDCA targets the chaperone HSP90 to promote its protein refolding *** collaboration further alleviates aging-induced endoplasmic reticulum(ER)stress and facilitates protein homeostasis,thus offering resistance to *** summary,our findings uncover new molecular links between an endogenous metabolite and protein homeostasis,and propose a novel anti-aging strategy that could improve both lifespan and healthspan.

关键词： tauroursodeoxycholic acid lifespan healthspan protein homeostasis

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

Multilayer core–shell structured FeNi_(3)@C with enhanced interfacial polarization for microwave absorbers

引用

Nano research 2025年第2期18卷 833-842页

作者： Shaohan Guo Junying Zhang Chengyou Lin Jin Ge Song Bi Zhi-Ling Hou College of Mathematics and Physics Beijing University of Chemical TechnologyBeijing 100029China School of Physics and Optoelectronic engineering Beijing University of TechnologyBeijing 100124China national Key Laboratory of Electromagnetic Information Control and Effects Shenyang Aircraft Design and Research InstituteShenyang 110035China 501 Department Xi’an Research Institute of High-TechXi’an 710025China

Magnetoelectric composites can achieve magneto-electric synergy to optimize impedance ***,it is challenging to enhance the broadband absorption performance for thin thickness ***,FeNi_(3)@C composite with magnetic alloy core and N-doped macroporous multilevel layered carbon shell was constructed by hierarchical interface *** uniform multilevel layered carbon shell could induce interfacial polarization and multiple scattering,and further endows enhanced electromagnetic attenuation and optimized impedance *** ultra-thin broadband absorber with an effective absorption bandwidth of 7.4 GHz is achieved at a thickness of only 1.6 ***,full-band absorption from 2 to 18 GHz at a thickness of 9.8 mm is realized through metastructure *** work provides an alternative strategy to prepare coreshell structured magnetoelectric composites for ultra-thin and broadband absorbers.

关键词： covalent organic frameworks(COFs) FeNi_(3)@C core-shell structure interfacial polarization impedance matching

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

Civil aviation emissions in China in 2019:Characteristics and abatement potential

引用

Journal of Environmental Sciences 2025年第5期151卷 225-237页

作者： Haowen An Yu Wang Yaxin Wang Jun Liu Xiaolong Tang Honghong Yi Department of Environmental engineering School of Energy and Environmental EngineeringUniversity of Science and Technology BeijingBeijing 100083China Key Laboratory of beijing Municipal Industry Pollutant Resources Processing Beijing 100083China

Civil aviation is one of the industries facing the greatest challenge in reaching carbon neutrality by the middle of this century,and this sector also contributes to adverse impacts on the regional air quality and human *** exhibits the second highest air passenger turnover *** understanding of civil aviation emissionsmust be urgently enhanced,and themitigation potential should be *** this study,on the basis of real domestic flight information for 2019,we built a greenhouse gas and air pollution emission inventory for the civil aviation sector in China with the fuel flowmethod based on the cruise and other *** thoroughly analyzed emissions by region,aircraft and engine types,and aircraft age,based on which we designed four measures to evaluate the abatement *** found that the hydrocarbon(HC),CO,NO_(x),SO_(2),particulate matter(PM)and CO_(2)emissions in 2019 reached 79.9 kt(95%CI[51.6–114.5]),176.3 kt(95%CI[114.5–248.2]),304.2 kt(95%CI[203.4–420.7]),23.2 kt(95%CI[14.2–33.7]),1.0 kt(95%CI[0.61–1.44])and 87.0 Mt(95%CI[57.4–119.6]),*** cruise phase was the major emission phase,accounting for 67%-87%of the total pollutant *** four measures were jointly implemented,the HC,CO,NO_(x),SO_(2),PM and CO_(2)emissions could be reduced by 61%,54%,55%,45%,32%and 38%,*** lower-emission aircraft and switching travel modes could substantially reduce civil aviation emissions in China.

关键词： Emission inventory Fuel flow method Cruise emission Age structure Reduction measures

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

Application of a multi-monitoring system and its temperature correction

引用

Journal of Mountain Science 2025年第2期22卷 681-694页

作者： LIU Songyuan YANG Peixi HE ManChao TAO Zhigang State Key Laboratory for Tunnel engineering China University of Mining and Technology-BeijingBeijing 100083China School of Mechanics and Civil engineering China University of Mining and Technology-BeijingBeijing 100083China College of Mining engineering North China University of Science and TechnologyTangshan 063210China

The Dazu Rock Carvings in Chongqing were inscribed on the World Heritage List in *** recent years,the Dazu Rock Carvings have faced environmental challenges such as geological forces,increased precipitation,pollution and tourism,which have led to rock deterioration and structural *** multi-source monitoring system for the protection of the rock carvings,based on the Internet of Things,includes Global Navigation Satellite System(GNSS)displacement monitoring,static level displacement monitoring,laser rangefinder displacement monitoring,roof pressure sensor monitoring and environmental damage *** paper analyses data from each sub-monitoring system within the multi-source monitoring system applied to Yuanjue Cave in the Dazu Rock ***,a correlation analysis between climate monitoring data and roof displacement data was carried out to assess the effect of *** on the results of the analysis,a temperature correction equation for the laser rangefinder was derived to improve the laser rangefinder displacement monitoring *** improved system was then used to monitor Cave 168,revealing the deformation and erosion patterns of the *** research results demonstrate that the multiparameter monitoring system is capable of accurately measuring and analyzing the stability of the Dazu stone carvings,as well as the effects of environmental conditions on *** use of the Internet of Things(IoT)and real-time data collection to monitor rock deformation and environmental conditions is an innovative application of technology in cultural heritage *** of the monitoring system and statistical correlation analysis of temperature and laser rangefinder data highlight the thoroughness of the methodology in this paper and its relevance to sustainable mountain *** the future,multi-source monitoring systems will have a broader application in the conservation of other UNESCO World Heritage Sites.

关键词： Multi-source Monitoring System Data Fitting Dazu Rock Carvings Rock Cave Protection

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

Deformation mechanism and NPR anchor cable truss coupling support in tunnel through fault fracture zone

引用

Journal of Mountain Science 2025年第1期22卷 354-374页

作者： HUO Shusen TAO Zhigang HE Manchao WANG Fengnian XU Chuang State Key Laboratory for Geomechanics and Deep Underground engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Mechanics and Civil engineering China University of Mining and Technology(Beijing)Beijing 100083China

To address the issue of extensive deformation in the Tabaiyi Tunnel caused by the fault zone,nuclear magnetic resonance(NMR)technology was employed to analyze the physical and mechanical properties of waterabsorbing *** analysis aimed to understand the mechanism behind the significant *** from the principle of excavation stress compensation,a support scheme featuring NPR anchorcables and an asymmetric truss support system was *** validate the scheme,numerical analysis using a combination of the Discrete Element Method(DEM)-Finite Element Method(FEM)was ***,similar material model tests and engineering measurements were carried *** experiments were also performed to evaluate the NPR anchor-cable and truss support system,focusing on anchor cable forces,pressures between the truss and surrounding rock,pressures between the initial support and secondary lining,as well as the magnitude of settlement and convergence deformation in the surrounding *** results indicate that the waterinduced expansion of clay minerals,resulting from damage caused by fissure water,accelerated the softening of the mudstone's internal structure,leading to significant deformations in the Tabaiyi Tunnel under high tectonic *** original support design fell short as the length of the anchor rods was smaller than the expansion depth of the plastic *** a result,the initial support structure bore the entire load from the surrounding rock,and a non-coupled deformation contact was observed between the double-arch truss and the surrounding *** adoption of NPR asymmetric anchor-cable support effectively restrained the expansion and asymmetric distribution characteristics of the plastic *** the mechanical degradation caused by water absorption in mudstone,the rigid constraint provided by the truss proved crucial for controlling the stability of the surrounding *** research findings hold significant implicatio

关键词： Fault fracture zone Large deformation Nuclear magnetic resonance NPR anchor cable truss support Coupled 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

Likelihood-based modified Kalman filter for estimating vehicle lateral states with random measurement delay

引用

Science China Technological Sciences 2025年第3期68卷 314-322页

作者： Chao YANG Ruixin ZHANG Weida WANG Yuhang ZHANG Jiayi FANG Qi WANG Shouwen YAO School of Mechanical engineering Beijing Institute of Technology Chongqing Innovation center Beijing Institute of Technology

Accurate lateral state estimation is crucial for ensuring the stability and safety of vehicles. The Kalman filter is widely utilized to estimate the lateral state of vehicles. However, vehicle state measurement suffers from inherent time delays and model discrepancies. The existence of fractional and random delays necessitates long sampling periods for the inputs of the Kalman filter,leading to update mismatch and deterioration of the accuracy of the estimation. This situation poses a threat to driving *** addition, the tire cornering stiffness, a critical model parameter, exhibits nonlinear and dynamic variations that cannot be measured in real time. This inherent variability significantly affects the accuracy of lateral state estimation. Considering internal and external uncertainties, an observer framework for vehicle lateral state estimation based on the Kalman filter was designed in this work. First, a modified delayed Kalman filter method that considers the random fractional delays was developed. The relationship correlation between the delayed measurement and the prior state was constructed based on a likelihood ***, the tire cornering stiffness was estimated online by an algorithm based on recursive least squares. This parameter was used to dynamically adjust the vehicle model for the Kalman filter. Finally, two simulations and a real vehicle experiment were performed to verify the effectiveness of the proposed method. In particular, the root mean squared error(RMSE) of the slip angle decreased by 30.70%, and that of the yaw rate decreased by 61.03% in the double lane change scenario. Actual vehicle experiments demonstrated that the algorithm can be effectively applied in real situations.

关键词： measurement delay Kalman filter parameter identification likelihood estimation

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Facile construction of heterogeneous dual-ionic poly(ionic liquid)s for efficient and mild conversion of CO_(2)into cyclic carbonates

引用

Journal of Environmental Sciences 2025年第3期149卷 177-187页

作者： Guanqun Xie Jiaxiang Qiu Huadeng Li Hongbin Luo Shuo Li Yanbin Zeng Ke Zheng Xiaoxia Wang School of Environment and Civil engineering Dongguan University of TechnologyDongguan 523808China School of Materials Science and engineering Guangdong Provincial Engineering Technology Research Center of Key Material for High Performance Copper Clad LaminateDongguan University of TechnologyDongguan 523808China

In the context of peaking carbon dioxide emissions and carbon neutrality,development of feasible methods for converting CO_(2)into high value-added chemicals stands out as a hot *** this study,P[D+COO^(−)][Br^(−)][DBUH^(+)],a series of novel heterogeneous dual-ionic poly(ionic liquid)s(PILs)were synthesized readily from 2-(dimethylamino)ethyl methacrylate(DMAEMA),bromo-substituted aliphatic acids,organic bases and divinylbenzene(DVB).The structures,compositions and morphologies were characterized or determined by nuclear magnetic resonance(NMR),thermal gravimetric analysis(TGA),infrared spectroscopy(IR),scanning electron microscopes(SEM),and Brunauer-Emmett-Teller analysis(BET),*** of the P[D+COO^(−)][Br^(−)][DBUH^(+)]series as catalysts in converting CO_(2)into cyclic carbonates showed that P[D+COO^(−)][Br^(−)][DBUH^(+)]-2/1/0.6was able to catalyze epiclorohydrin-CO_(2)cycloaddition the most *** afforded chloropropylene carbonate(CPC)in 98.4%yield with≥99%selectivity in 24 hr under solvent-and additive-free conditions at atmospheric *** experiments showed that recycling of the catalyst 6 times only resulted in a slight decline in the catalytic *** addition,it could be used for the synthesis of a variety of differently substituted cyclic carbonates in good to excellent ***,key catalytic active sites were probed,and a reasonable mechanism was proposed *** summary,this work poses an efficient strategy for heterogenization of dual-ionic PILs and provides amild and environmentally benign approach to the fixation and utilization of carbon dioxide.

关键词： Dual-ionic poly(ionic liquid)s CO_(2)cycloaddition Epoxides Cyclic carbonates Heterogeneous catalysts

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

Absorption mechanism of SO_(3)on various alkaline absorbents in the presence of SO_(2)

引用

Journal of Environmental Sciences 2025年第3期149卷 268-277页

作者： Junxiang Guo Jin Xiong Yuran Li Jirigele Qinggele Tingyu Zhu Shougang Group research Institute of technology Beijing 100043China beijing Key Laboratory of Green Recyclable Process for Iron&Steel Production technology Beijing 100043China CAS Key Laboratory of Green Process and engineering Institute of Process EngineeringInnovation Academy for Green ManufactureChinese Academy of SciencesBeijing 100190China WISDRI City Environment Protection engineering Limited Company Wuhan 430205China

Sulfur trioxide(SO_(3))as a condensable particle matter has a significant influence on atmospheric visibility,which easily arouses formation of *** is imperative to control the SO_(3)emission from the industrial flue *** commonly used basic absorbents,including Ca(OH)_(2),MgO and NaHCO_(3)were selected to explore the effects of temperature,SO_(2)concentration on the SO_(3)absorption,and the reaction mechanism of SO_(3)absorption was further *** suitable reaction temperature for various absorbents were proposed,Ca(OH)_(2)at the high temperatures above 500°C,MgO at the low temperatures below 320°C,and NaHCO_(3)at the temperature range of 320–500°*** competitive absorption between SO_(2)and SO_(3)was found that the addition of SO_(2)reduced the SO_(3)absorption on Ca(OH)_(2)and NaHCO_(3),while had no effect on *** order of the absorption selectivity of SO_(3)follows MgO,NaHCO_(3)and Ca(OH)_(2)under the given conditions in this *** absorption process of SO_(3)on NaHCO_(3)follows the shrinking core model,thus the absorption reaction continues until NaHCO_(3)was exhausted with the utilization rate of nearly 100%.The absorption process of SO_(3)on Ca(OH)_(2)and MgO follows the grain model,and the dense product layer hinders the further absorption reaction,resulting in low utilization of about 50%for Ca(OH)_(2)and *** research provides a favorable support for the selection of alkaline absorbent for SO_(3)removal in application.

关键词： Alkali absorbent Sulfur trioxide Selectivity Shrinking core model Grain model

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

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：