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CrN supported by carbon nanosheets as efficient catalysts toward oxygen reduction reaction and Zn-air batteries

Rare Metals 2024年第10期43卷 4973-4981页

作者： Ya-ting {1. Fan {1. Zhe Lu Jun-Ming Luo Su-Yang Feng Qi wang Hui Chen Hao-Ming Wu Zheng-Pei Miao Bin Chi Neng Yu Cheng-Hang You Jing Li Xin-Long Tian school of Chemistry and Chemical Engineering School of Marine Science and EngineeringHainan Provincial Key Lab of Fine ChemistryHainan University State Power Investment Group Hainan Electric Power Co.Ltd. Key Laboratory of Fuel Cell technology of Guangdong Province Shenzhen Automotive Research Institute Beijing Institute of Technology State Key Laboratory of Nuclear Resources and Environment East China University of Technology

Exploring non-precious efficient oxygen reduction reaction （ORR） catalysts is of great significance to fuel cells and Zn-air batteries （ZABs）.CrN is a theoretically promising ORR catalyst,but its potential needs to be unlocked by proper supports that provide high conductivity and high exposure of active *** this work,we introduce a novel synthesis of carbon nanosheets-supported CrN nanoparticles （CrN/C） by annealing the mixture of CrCl3,1.1.-phenanthroline and melamine via a two-step *** prepared CrN/C materials show good ORR activity and stability in acidic and alkaline *** optimal CrN/C material has an ORR half-wave potential of 0.73 and 0.72.V （*** hydrogen electrode） in acidic and alkaline media,*** it retains 82. and 78% of ORR current density in acidic and alkaline media after durability tests,***,the optimal CrN/C material-based self-breathing ZABs deliver a maximum power density of 1.8 mW·cm-2.which is one of the highest among transition metal nitrides-based ZABs It is found that the ORR activity of CrN/C materials is highly related to the Cr–N valence *** work highlights the good potential of CrN as robust ORR catalyst and verifies its promising application in ZABs.

关键词： Carbon nanosheets CrN Fuel cells Oxygen reduction reaction Zn-air batteries

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Non-blocking message total ordering protocol

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science in{1.(Series F) 2008年第12期51卷 1919-1934页

作者： wang Yun & wang JunLing {2. of computer science & Engineering, Southeast university Key Lab of computer Network & Information Integration, MOE, Nanjing 2.0096, china 1. school of {1. {2. & Engineering Southeast University Key Lab of computer Network & Information Integration MOE Nanjing 210096 China

Message total ordering is a critical part in active replication in order to maintain consistency among members in a fault tolerant group. The paper proposes a non-blocking message total ordering protocol （NBTOP） for distributed systems. Non-blocking property refers to that the members in a fault tolerant group keep on running independently without waiting for installing the same group view when a fault tolerant group evolves even when decision messages collide. NBTOP takes advantage of token ring as its logical control way. Members adopt re-requesting mechanism （RR） to obtain their lost decisions. Forward acknowledgement mechanism （FA） is put forth to solve decision collisions. The paper further proves that NBTOP satisfies the properties of total order, agreement, and termination. NBTOP is implemented, and its performance test is done. Comparing with the performance of Totem, the results show that NBTOP has a better total ordering delay. It manifests that non-blocking property helps to improve protocol efficiency.

关键词： total ordering protocol non-blocking active replication fault tolerance token ring

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Evolutionary Design of Boolean Functions

Evolutionary Design of Boolean Functions

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The 1.t Chinese Conference on Trusted Computing and Information Security

作者： wang zhang-yi, zhang Huan-guo, QIN Zhong-ping, MENG Qing-shu school of computer, wuhan university, wuhan 430072. hubei, china school of Software, Huazhong university of {12. and technology, wuhan 430074, hubei, china

＜正＞ We use evolutionary computing to synthesize Boolean functions randomly. By using specific crossover and mutation operator in evolving process and modifying search space and fitness function, we get some high non-linearity functions which have other good cryptography characteristics such as autocorrelation etc. Comparing to other heuristic search techniquest evolutionary computing approach is more effective because of global search strategy and implicit parallelism.

关键词： Boolean function non-linearity evolutionary computing

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Eigenvalue approximation from below using non-conforming finite elements

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science{1. Mathematics 2010年第1期53卷 137-150页

作者： YANG YiDu 1.,zhang ZhiMin {1.& LIN FuBiao 1. school of Mathematics and {{1. science,Guizhou Normal university,Guiyang 550001.china {1.Department of Mathematics,Wayne State university,Detroit,MI 48{1.{1.USA 1. school of Mathematics and {1. {2. Guizhou Normal University Guiyang 550001 China2. Department of Mathematics Wayne State University Detroit MI 48202 USA

This is a survey article about using non-conforming finite elements in solving eigenvalue problems of elliptic operators,with emphasis on obtaining lower bounds. In addition,this article also contains some new materials for eigenvalue approximations of the Laplace operator,which include:1. the proof of the fact that the non-conforming Crouzeix-Raviart element approximates eigenvalues associated with smooth eigenfunctions from below;2. the proof of the fact that the non-conforming EQ rot1.element approximates eigenvalues from below on polygonal domains that can be decomposed into rectangular elements;3) the explanation of the phenomena that numerical eigenvalues λ 1.h and λ 3,h of the non-conforming Q rot1.element approximate the true eigenvalues from below for the L-shaped domain. Finally,we list several unsolved problems.

关键词： non-conforming element eigenvalue lower bound

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Paleoenvironment evolution and organic matter enrichment mechanisms in the first member of the Qingshankou Formation,Songliao Basin,china

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Frontiers of Earth science 2024年第2期18卷 364-383页

作者： Ying LI Min wang Yu YAN Xin wang Jinyou {2. Xuefeng BAI Yuchen {2. Jiaheng XUE Junsheng FEI Lianbin {2. Guojun wang school of Geo{1. China University of Petroleum(East China)Qingdao 266580China Shandong Provincial Key Laboratory of Deep Oil and Gas Qingdao 266580China Exploration and Development Research Institute of Daqing Oilfield Co Ltd. Daqing 163712China Exploration Division PetroChina Daqing Oilfield CompanyDaqing 163453China Department of Physics Xiamen University MalaysiaBandar Sunsuria 43900Malaysia

Organic matter is the basis for oil and gas generation,and the depositional environment controls its *** first member of the Qingshankou Formation(K_(2.qn^(1.)in Songliao Basin has a thick organic-rich shale and so is an important target section for shale oil exploration and *** the Gulong Sag,shale samples from this unit were collected over the full length of the *** characterization of the environments of deposition(EOD)of K_(2.qn^(1.was improved by utilizing lithological characteristics,thin section observations,elemental compositions,and organic carbon *** with the normalization coefficients proposed in this paper,an organic matter correlation model was established to elucidate the factors that influence organic matter *** the bottom to the top of K2.n1.the lake depth gradually becomes shallower,the primary productivity first decreases and then increases,the reducing conditions become stronger and then weaker,the water salinity gradually decreases,the climate first becomes semi-humid and then warm and humid,and the input of terrigenous debris first decreases and then increases.A major marine transgression at the base of the K_(2.qn^(1.᾽s brought in nutrients to increase primary productivity,and the density-stratified reducing environment preserved and enriched organic *** primary productivity occurred during the middle of the deposition of the K_(2.qn^(1.,while terrigenous input is *** matter is preserved in reduced deep lake environments,resulting in organic matter-rich black *** lake became shallower,and the salinity decreased in the upper part of K_(2.qn^(1..Benthic organisms rapidly multiplied,consuming large amounts of oxygen and destroying the previously depositional environment,resulting in a reducing environment disturbed by benthic organisms with poor preservation conditions and the lowest organic matter content.

关键词： major and trace elements paleoenvironment evolution OM enrichment mechanism lacustrine shale Songliao Basin Qingshankou Formation

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Martensite Transformation and Its Control in DP,TRIP and TWIP Steels

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Journal of Iron and Steel Research International 2011年第S1期18卷 200-207页

作者： LI Lin 1,GAO Yi 2.SHI Wen 1,LIU Ren-dong 2.HE Yan-lin 1,FU Ren-yu 1,zhang Mei 1,wang Hua 1 (1.{2. of Materials science and Engineering,Shanghai university,Shanghai 2.0072.china 2.Ansteel Company,Anshan 114001 china Corresponding Author:{2. of Materials science and Engineering,Shanghai university,P.O.Box 15,149 Yanchang Road,Shanghai 2.0072.china) Shanghai Univ Sch Mat Sci & Engn Shanghai 200072 Peoples R China Ansteel Co Anshan 114001 Peoples R China

Designing of alloy concept and process for DP,TRIP and TWIP steels stressing at martensite transformation are *** DP steel,austenite volume percent and its carbon content at different intercritical temperatures are calculated as well as the tensile strength of the steel,which meet well with the experimental *** condition for dissolution of carbide is discussed by experiments and predicted by kinetic *** sample TRIP steels are prepared and their concentration profiles are calculated showing different diffusion characteristics of *** also shows carbon enrichment is successful in this stage through the quick diffusion of carbon from ferrite to *** order to maintain the austenite stability or to prevent precipitation of cementite,minimum cooling rate from the intercritical zone to over aging stage is obtained through kinetic *** transformation is estimated,which indicates the carbon rerichment from ferrite of bainite structure to austenite in this stage is also *** HCP martensite transformation and the strain induced martensite transformation in TWIP steel is *** between transformation and mechanical properties in the steel is also mentioned.

关键词： martensite transformation DP TRIP and TWIP steels thermal HCP martensite transformation

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Concatenating construction of the multisymplectic schemes for {1.1.dimensional sine-Gordon equation

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science{1. Mathematics 2004年第1期47卷 18-30页

作者： wang Yushun, wang Bin & QIN MengzhaoLASG, Institute of Atmospheric Physics, Chinese Academy of {2.s, Beijing 1.002., china school of Mathematics and computer {2., Nanjing Normal university, Nanjing 2.0097, china school of Mathematics and System {2., Chinese Academy of {2.s, Beijing 1.0080, china 1. LASG Institute of Atmospheric Physics Chinese Academy of Sciences 100029 Beijing China 2. {1. of Mathematics and computer {2. Nanjing Normal University 210097 Nanjing China 3. school of Mathematics and System {1. Chinese Academy of Sciences 100080 Beijing China

In this paper, taking the 2.1.dimensional sine-Gordon equation as an example, we present the concatena{1. method to construct the multisymplectic schemes. The method is to discretizee independently the PDEs in different directions with symplectic schemes, so that the multisymplectic schemes can be constructed by concatena{1. those symplectic schemes. By this method, we can construct multisymplectic schemes, including some widely used schemes with an accuracy of any order. The numerical simulation on the collisions of solitons are also proposed to illustrate the efficiency of the multisymplectic schemes.

关键词： 2.l-climensional sine-Gordon equation multisymplectic scheme concatenating method solitons

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Primary Structural and Quantitative Analysis of Infeasible Solution to Job shop Scheduling Problem

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Systems science and Systems Engineering 2000年第2期10卷 164-170页

作者： wang Bo 1,\ wang Fei 1,\ {2. Qun 2.\ WEI You\|shuan 1 1.school of Management, Beijing university of Aeronautics and Astronautics, Beijing 100083, china 2.school of Management, Beijing university of science and technology, Beijing 100083, Chin

In this paper, the structure of infeasible solutions to Job Shop Scheduling Problem (JSSP) is quantitatively analyzed, and a necessary and sufficient condition of the deadlock for JSSP is also given. For a simple JSSP with 2.machines and N jobs, a formula for calcula{1. the infeasible solutions is proposed, which shows that the infeasible solution possesses the majority of search space and only those heuristic algorithms which do not produce infeasible solutions are valid.

关键词： scheduling problem deadlock infeasible solution

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Knockdown of neuronal DAF-1./Raptor promotes healthy aging in ***

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Journal of Genetics and Genomics 2024年第5期51卷 507-516页

作者： Xiao Zang Qi wang Hanxin {1. Yiyan {1. Zi wang Zixing Wu Di Chen Model Animal Research Center of Medical school Nanjing UniversityNanjingJiangsu 210061China Zhejiang university-university of Edinburgh Institute School of MedicineZhejiang UniversityHainingZhejiang 314400China Department of Colorectal Surgery The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang 310058China

The highly conserved target of rapamycin(TOR)pathway plays an important role in aging across *** studies have established that inhibition of the TOR complex 1.TORC1.significantly extends lifespan in Caenorhabditis ***,it has not been clear whether TORC1.perturbation affects aging in a spatiotemporal ***,we apply the auxin-inducible degradation tool to knock down endogenous DAF-1.,the *** ortholog of regulatory associated protein of TOR(Raptor),to characterize its roles in *** or tissue-specific inhibition of DAF-1. during development results in various growth defects,whereas neuron-specific knockdown of DAF-1. during adulthood significantly extends lifespan and *** neuronal DAF-1. deficiency-induced longevity requires the intestinal activities of DAF-1./FOXO and PHA-4/FOXA transcription factors,as well as the AAK-2.AMP-activated protein kinaseαcatalytic *** profiling reveals that the neuronal DAF-1. knockdown promotes the expression of genes involved in *** findings define the tissue-specific roles of TORC1.in healthy aging and highlight the importance of neuronal modulation of aging.

关键词： Aging targetof rapamycin DAF-1. DAF-1. C.elegans

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Identification and Characterization of hmr1. Gene Encoding a Multidrug Resistance Efflux Protein from Streptomyces hygroscopicus *** Strain 1.-2.

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Acta Biochimica et Biophysica Sinica 2004年第8期36卷 519-528页

作者： Lei QIN , Heng-An wang1 , Zhong-Qin WU, Xiao-Feng zhang, Mei-Lei JIN,Zi-Xin DENG2. and Guo-Ping ZHAOShanghaiResearch Center of Bio{2., Shanghai Institute for Biological sciences, Chinese Academy of sciences,Graduate school of the Chinese Academy of sciences, Shanghai 2.02.3, china 1school of Agriculture and Biology, Shanghai Jiaotong university, Shanghai 2.1101, china 2.5} of Life science and Bio{2., Shanghai Jiaotong university, Shanghai 2.0030, china ShanghaiResearch Center of Biotechnology Shanghai Institute for Biological Sciences Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences school of Agriculture and Biology Shanghai Jiaotong University

The hmr1. gene was cloned from Streptomyces hygroscopicus subsp. yingchengensis strain 1.- 2., a bacterium strain producing agricultural antibiotics. Sequence similarity comparison indicates that hmr1. gene may encode a predicted protein with 1. putative transmembrane α-helical spanners, belonging to the drug:H+ antiporter-2.family of the major facilitator superfamily. The expression of hmr1. in the mycelium of strain 1.-2. was detected by Western blotting analysis. Gene replacement technology was employed to construct an hmr1. disruption mutant. The growth inhibition test against different antibiotics indicated that the mutant strain was 5–2. fold more susceptible to tetracycline, vancomycin and mitomycin C than the parental wild type strain. The mutant took up tetracycline much faster and accumulated more antibiotics than the wild type strain 1.-2.. While with the addition of an energy uncoupler, carbonyl cyanide m- chlorophenylhydrazone, the characteristics of the accumulation of [3H]tetracycline in these two strains were almost the same. It was thus concluded that hmr1. encoded a multidrug resistance efflux protein.

关键词： multidrug resistance (MDR) gene replacement (knockout) Streptomyces Streptomyces hygroscopicus subsp. yingchengensis strain 1.-2.

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