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Recent advances in bismuth vanadate-based photocatalysts for photoelectrochemical water splitting

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Chinese Chemical Letters 2021年第6期32卷 1869-1878页

作者： lina wang Xiaoqiang Shi Yuefa Jia Hongfei Cheng Lei wang Qizhao wang School of Water and Environment Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of EducationChang'an UniversityXi'an 710054China College of Chemistry and Chemical Engineering Northwest Normal UniversityLanzhou 730070China

Photoelectrochemical(PEC)technology is considered to be a promising approach for solar-driven hydrogen production with zero *** vanadate(BiVO_(4))is a kind of photocatalytic material with strong photoactivity in the visible light region and appropriate band gap for PEC water ***,the solar-to-hydrogen efficiency(STH)of BiVO_(4)is far away from the 10%target needed for practical application due to its poor charge separation ***,this review attempts to summarize the strategies for improving the photocurrent density and especially hydrogen production of BiVO_(4)materials through PEC techniques in the last three years,such as doping nonmetal and metal elements,depositing noble metals,constructing heterojunctions,coupling with carbon and metalorganic framework(MOF)materials to further enhance the PEC performance of BiVO_(4)*** review aims to serve as a general guideline to fabricate highly efficient BiVO_(4)-based materials for PEC water splitting.

关键词： Bismuth vanadate(BiVO_(4)) Photoelectrochemical Water splitting Hydrogen production Heterojunctions

Labeling Malicious Communication Samples Based on Semi-Supervised Deep Neural Network

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China Communications 2019年第11期16卷 183-200页

作者： Guolin Shao Xingshu Chen Xuemei Zeng lina wang Cybersecurity Research Institute Sichuan UniversityChengduSichuan 610065China College of Computer Science Sichuan UniversityChengduSichuan 610065China College of Cybersecurity Sichuan UniversityChengduSichuan 610065China

The limited labeled sample data in the field of advanced security threats detection seriously restricts the effective development of research *** the sample labels from the labeled and unlabeled data has received a lot of research attention and various universal labeling methods have been ***,the labeling task of malicious communication samples targeted at advanced threats has to face the two practical challenges:the difficulty of extracting effective features in advance and the complexity of the actual sample *** address these problems,we proposed a sample labeling method for malicious communication based on semi-supervised deep neural *** method supports continuous learning and optimization feature representation while labeling sample,and can handle uncertain samples that are outside the concerned sample *** to the experimental results,our proposed deep neural network can automatically learn effective feature representation,and the validity of features is close to or even higher than that of features which extracted based on expert ***,our proposed method can achieve the labeling accuracy of 97.64%~98.50%,which is more accurate than the train-then-detect,kNN and LPA methodsin any labeled-sample proportion *** problem of insufficient labeled samples in many network attack detecting scenarios,and our proposed work can function as a reference for the sample labeling tasks in the similar real-world scenarios.

关键词： sample labeling malicious communication semi-supervised learning deep neural network label propagation

Effects of Strain Rate and Fiber Content on the Dynamic Mechanical Properties of Sisal Fiber Cement-Based Composites

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Journal of Renewable Materials 2023年第1期11卷 393-410页

作者： Yubo Zhang Ping Lei lina wang Jiqing Yang Facuty of Architecture and Civil Engineering Yunnan Agricultural UniversityKunming650000China

In this paper,a split Hopkinson pressure bar(SHPB)was used to investigate the dynamic impact mechanical behavior of sisal fiber-reinforced cement-based composites(SFRCCs),and the microscopic damage evolution of the composites was analyzed by scanning electron microscopy(SEM)and energy-dispersive X-ray spectrome-try(EDS).The results show that the addition of sisal fibers improves the impact resistance of cement-based composite *** with ordinary cement-based composites(OCCs),the SFRCCs demonstrate higher post-peak strength,ductility,and energy absorption capacity with higher fiber ***,the SFRCCs are strain rate sensitive materials,and their peak stress,ultimate strain,and energy integrals all increase with increasing strain *** the perspective of fracture failure characteristics,the failure of OCCs is dominated by the brittle failure of crystal *** contrast,the failure mode of the SFRCCs changes to microscale matrix cracks,multi-scale pull-out interface debonding of fibers(fine filaments and bundles),and mechanical *** research provides an experimental basis for the engineering application of high-performance and green cement-based composites.

关键词： Sisal fiber cement-based composites SHPB energy integration microstructure damage evolution law

Recurrence and decay a star-typed queueing properties of model with refusal

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Frontiers of Mathematics in China 2015年第4期10卷 917-932页

作者： Junping LI Xiangxiang HUANG Juan wang lina ZHANG School of Mathematics and Statistics Central South University Changsha 410075 China

We consider a multiclass service system with refusal and bulk-arrival. The properties regarding recurrence, ergodicity, and decay properties of such model are discussed. The explicit criteria regarding recurrence and ergodicity are obtained. The stationary distribution is given in the ergodic case. Then, the exact value of the decay parameter, denoted by λE, is obtained in the transient case. The criteria for the λE-recurrence are also obtained. Finally, the corresponding λE-invariant vector/measure is considered.

关键词： Generation function bulk-arrival queue recurrence ergodicity,decay parameter invariant measure

Fabrication and electrochemical performance of nanofibrous micro-frameworks of α-MnO_2

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Particuology 2014年第6期12卷 54-58页

作者： Dalai Jin Ruirui Liu Xiaochu Ding Longcheng wang lina wang Linhai Yue Center of Materials Engineering Zhejiang Sci-Tech University Department of Chemistry Zhejiang University Department of Chemistry Michigan Technological University1400 Townsend DriveMI 49931USA Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of EducationZhejiang Sci-Tech University

A facile solid-phase conversion route is proposed to fabricate a micro-framework of α-MnO2 with a nanofibrous structure and high *** fabrication is achieved by a three-step process using a preformed manganese tartrate with a rectangular framework as the precursor followed by thermal annealing and hydrothermal oxidation to form the final nanofibrous *** of the phase and the morphology are characterized by FESEM,XRD,TG-DTA,and TEM *** electrochemically active material α-MnO2 exhibits both attractive stability of the Coulombic efficiency after long-term cyclic charging/discharging and acceptable specific capacitance.

关键词： Manganese oxide Hierarchical structure Nanofiber

Summary of Detection and Location for Oil and Gas Pipeline Leak

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Summary of Detection and Location for Oil and Gas Pipeline L...

Wide emission shifts and high quantum yields of solvatochromic carbon dots with rich pyrrolic nitrogen

第25届中国控制与决策会议

作者： wang lina wang Jian Gao Xianwen wang Mingshun School of Information Science and Engineering Northeastern University Shenyang Shallow Sea Oil Development Company Technology Research Institute of Liaohe Oilfield

ISBN: (纸本)9781467355339

This thesis introduces detection and location methods about oil and gas pipelines leak comprehensively in recent years. It introduces the domestic and foreign development situation about oil and gas pipelines leak;Based on the hardware and software method this essay introduces research results about methods of fault diagnosis of oil and gas pipeline in detail;also, points out the developing direction of leak detection and location techniques is described.

关键词： oil and gas pipelines leak detection leak location

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Nano Research 2020年第9期13卷 2492-2499页

作者： Hua wang Philip Haydel Ning Sui lina wang Yan Liang William W.Yu Departm ent of Chem istry and Physics Louisiana State UniversityShreveportLA 71115USA College of M aterials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China College of Food Science and Engineering Qilu University of Technology(Shandong A cadem y of Sciences)Jinan 250353China

Carbon dots(CDs)with solvatochromic emission colors in different solvents have attracted much attention as a new class of luminescent nanomaterial owing to their facile synthesis and low production *** this work,we prepared two kinds of CDs with solvatochromic emissions:green emission CDs(G-CDs)and multicolor emission CDs(M-CDs).G-CDs synthesized from o-phenylenediamine exhibited weak photoluminescence emission(quantum yield 2.8%-6.1%)and 39 nm solvatochromic shifts(492-531 nm).In contrast,M-CDs prepared from o-phenylenediamine and 4-aminophenol showed 87 nm solvatochromic shift range(505-592 nm)and much higher photoluminescence quantum yield(18.4%-32.5%).The two CDs exhibited different emission,absorption,and photoluminescence *** origin of solvatochromic shifts and the formation mechanism of CDs were demonstrated by analyzing the structures and compositions of two *** percentages of pyrrolic nitrogen and amino nitrogen make wider solvatochromic shifts and higher quantum *** results were well supported by density functional theory *** effective strategy to expand solvatochromic shift range and improve quantum yields could open a new window to prepare satisfied solvatochromic carbon dots.

关键词： carbon dot solvatochromism density functional theory(DFT)calculation quantum yield pyrrolic nitrogen

Study on Pollution Cost Control Model under Asymmetric Information Based on Principal Agent

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Journal of Systems Science and Information 2021年第5期9卷 549-557页

作者： lina wang Koen MILIS Stephen POELMANS School of Economics and Management Hainan Normal UniversityHaikou 571158China Campus Vesta Education Management IndustryBrusselsBelgium Faculty of Economics and Management Hogeschool-Universiteit BrusselKULeuven AssociationWarmoesberg 26Brussel 1000Belgium

Pollution cost control is key to solve pollution *** paper takes pollution control cost of pollution control contract between management authority and pollutant discharge enterprise as research object,considers pollution control quality level,pollution control quality inspection and pollution control cost model,and establishes pollution control cost model of management authority and pollutant discharge enterprise,including rational constraints of pollutant discharge *** it analyzes principal-agent relationship between the two under condition of asymmetric information,and un-observability of pollution control level is shown as hiding information of sewage *** essence,it is problem of adverse selection in *** control cost of management is objective *** first order condition of pollution control cost of sewage enterprise is transformed into state space equation,and optimal control of problem is solved by using maximum *** particular,management authority,as principal,uses pollution control provisions to reward,punish and encourage pollutant discharge enterprises as agents.

关键词： principal agent asymmetric information pollution cost control

Bimetallic nanoparticles as cascade sensitizing amplifiers for low-dose and robust cancer radio-immunotherapy

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Acta Pharmaceutica Sinica B 2024年第4期14卷 1787-1800页

作者： Yupeng wang lina wang Tao Li Min Ouyang Hejian Xiong Dongfang Zhou Department of Ultrasonic Diagnosis Zhujiang HospitalKey Laboratory of Mental Health of the Ministry of EducationNMPA Key Laboratory for Research and Evaluation of Drug Metabolism&Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou 510515China Testing and Analysis Center Hebei Normal UniversityShijiazhuang 050024China Department of Mechanical Engineering The University of Texas at DallasRichardsonTX 75080USA

Radiotherapy(RT)is one of the most feasible and routinely used therapeutic modalities for treating malignant *** particular,immune responses triggered by RT,known as radio-immunotherapy,can partially inhibit the growth of distantly spreading tumors and recurrent ***-ever,the safety and efficacy of radio-immunotherapy is impeded by the radio-resistance and poor immu-nogenicity of ***,we report oxaliplatin(IV)-iron bimetallic nanoparticles(OXA/Fe NPs)as cascade sensitizing amplifiers for low-dose and robust *** OXA/Fe NPs exhibit tumor-specific accumulation and activation of OXA(I)and Fe^(2+)in response to the reductive and acidic microenvironment within tumor *** cascade reactions of the released metallic drugs can sensitize RT by inducing DNA damage,increasing ROS and O_(2) levels,and amplifying the immunogenic cell death(ICD)effect after RT to facilitate potent immune *** a result,OXA/Fe NPs-based low-dose RT triggered a robust immune response and inhibited the distant and metastatic tumors effectively by a strong abscopal ***,a long-term immunological memory effect to protect mice from tumor rechal-lenging is ***,the bimetallic NPs-based cascade sensitizing amplifier system offers an effi-cient radio-immunotherapy regimen that addresses the key challenges.

关键词： Bimetallic nanoparticles Radio-immunotherapy Cascade sensitizing amplifier,Oxaliplatin Fenton-typeHaber-Weiss reaction Radiosensitization Immunogenic cell death Radio-resistance