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journal of Materials Science & Technology 2023年第25期156卷 118-128页

作者： Z.C.Meng M.M.Yang A.h.Feng S.j.Qu F.Zhao L.Yang j.h.yao Y.Yang Q.B.Fan h.Wang Interdisciplinary Centre for Additive Manufacturing (ICAM) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China School of Materials Science and Engineering Tongji UniversityShanghai 201804China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055China National Key Laboratory of Science and Technology on Materials Under Shock and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401135China

The interaction between{112}deformation twinning and grain boundary in coaxial polycrystalline tantalum under shock compression was studied with molecular dynamics simulation under different grain pair misorientation angles(MA)and geometric compatibility factor(m’).Generally,in the coaxial polycrystal,the value of MA determines the occurrence of twin transfer(TT)or twin blockage(TB),i.e.,twin transfer occurs at MA≤29°with twin blockage *** TT,the value of m’affects the selection of twin variants.,i.e.,the twin system with a larger m’is easier to *** morphology of twin pairs is ruler-shaped and lenticular under TT and TB,respectively,with different thickening mechanisms,including grain boundary dislocation emission.

关键词： Plasticity Grain boundary Twin Atomistic simulation Tantalum

Optical properties of ZnO and Mn-doped ZnO nanocrystals by vapor phase transport processes

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Nano-Micro Letters 2009年第1期1卷 45-48页

作者： Z.Wang X.Y.Ma j.W.Song j.h.yao School of Mathematics and Physics Suzhou University of Science and Technology Nankai University

In this paper we investigated the optical properties of ZnO and Mn doped ZnO nanocrystals that were fabricated by a vapor phase transport growth process, using zinc acetate dihydrate with or without Mn in a constant O2/Ar mixture gas flowing through the furnace at 400600℃, respectively. The as grown ZnO nanocrystals are homogeneous with a mean size of 19 nm observed by scanning electron microscope（SEM）. The optical characteristics were analyzed by absorption spectra and photoluminescence（PL） spectra at room-temperature. For ZnO nanocrystals, a strong and predominant UV emission peaked at 377 nm was found in the PL spectra. For Mn doped ZnO nanocrystals, in addition to the strong UV emission, a strong blue emission peaked at 435 nm was observed as well. By doping Mn ions, the major UV emission shifts from 377 nm to 408 nm, showing that Mn ions were not only incorporated into ZnO Ncs, but also introduced an impurity level in the bandgap. Moreover, with the concentration of Mn increasing, the relative intensities of the two emissions change largely, and the photoluminescence mechanism of them is discussed.

关键词： ZnO and Mn-doped ZnO nanocrystals Optical properties Vapor phase transport growth

Effects of Physically Effective Fiber on Ruminal Fermentation and Digestibility in Goats

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Effects of Physically Effective Fiber on Ruminal Fermentatio...

Estimating Critical Clearing Time of Grid Faults Using DA of State-Reduction Model of Power Systems

第五届中国畜牧科技论坛

作者： X.h.Zhao T.Zhang M.Xu j.h.yao College of Animal Science and Technology Northwest A&F University

The objective of this study was to evaluate the effects of physically effective neutral detergent fiber(peNDF) in goat diets containing alfalfa hay as the sole forage source on ruminal fermentation,and nutrient *** rumen fistulated goats were fed different proportions of chopped and ground alfalfa hay in a 4×4 Latin square *** were chemically similar but varied in peNDF content;low(L),moderate low(ML),moderate high(Mh),and high(h).Dietary peNDF content was determined using the Penn State Particle Separator with two sieves(8 and 19 mm) or three sieves(1.18,8,and 19 mm).The dietary peNDF content ranged from 1.9 to 11.7%using the two sieves and from 15.2 to 20.0%using the three *** forage particle length resulted in a linear reduction(P he duration that ruminal ph was below 5.8(10.9, 9.0,1.2,and 0.3 h/d).Increasing dietary peNDF tended to increase the molar proportion of propionate linearly (P = 0.08) and decrease the molar proportion of butyrate(P = 0.09),but did not affect total VFA concentration. Increasing dietary peNDF linearly decreased the apparent digestibility of OM,NDF,and ADF in the total tract(P = 0.009,0.003,and 0.008,respectively).This study demonstrated that increasing the dietary peNDF contained in alfalfa hay forage improved ruminal ph status,but reduced efficiency of feed use.

关键词： digestibility goat physically effective NDF rumen ph

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CSEE journal of Power and Energy Systems 2024年第2期10卷 807-820页

作者： Yang Liu Zhongyang Chen huanjin yao Lin Yi Q.h.Wu School of Electric Power Engineering South China University of TechnologyGuangzhou 510640China China Southern Power Grid Research Institute Guangzhou 510663China

This paper proposes a critical clearing time (CCT) estimation method by the domain of attraction (DA) of a state-reduction model of power systems using sum of squares (SOS) programming. By exploiting the property of the jacobian matrix and the structure of the boundary of the DA, it is found the DA of the state-reduction model and that of the full model of a power system are topological isomorphism. There are one-to-one correspondence relationships between the number of equilibrium points, the type of equilibrium points, and solutions of the two system models. Based on these findings, an expanding interior algorithm is proposed with SOS programming to estimate the DA of the state-reduction model. State trajectories of the full model can be transformed to those of the state-reduction model by orthogonal or equiradius projection. In this way, CCT of a grid fault is estimated with the DA of the state-reduction model. The calculational burden of SOS programming in the DA estimation using the state-reduction model is rather small compared with using the full model. Simulation results show the proposed expanding interior algorithm is able to provide a tight estimation of DA of power systems with higher accuracy and lower time costs.

关键词： Critical clearing time domain of attraction expanding interior algorithm state-reduction model SOS programming

Effects of physically effective fiber on chewing activity,ruminal fermentation,and digestibility in goats

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Effects of physically effective fiber on chewing activity,ru...

Role of aminopeptidase N-like in the acquisition of begomoviruses by Bemisia tabaci,the whitefly vector

低碳经济与高效养殖——第六次全国饲料营养学术研讨会暨动物营养学分会成立三十周年大会

作者： X.h.Zhao,T.Zhang,M.Xu,j.h.yao~* (Northwest A&F University,Yangling Shaanxi,China,712100)

The objective of this study was to evaluate the effects of physically effective neutral detergent fiber(peNDF) content of goat diets containing alfalfa hay as the sole forage source on feed intake,chewing activity,ruminal fermentation,and nutrient *** rumen fistulated goats were fed different proportions of chopped and ground alfalfa hay in a 4×4 Latin square *** were chemically similar but varied in peNDF content;lowThe objective of this study was to evaluate the effects of physically effective neutral detergent fiber(peNDF) content of goat diets containing alfalfa hay as the sole forage source on feed intake,chewing activity,ruminal fermentation,and nutrient *** rumen fistulated goats were fed different proportions of chopped and ground alfalfa hay in a 4×4 Latin square *** were chemically similar but varied in peNDF content;low

关键词： chewing digestibility goat physically effective NDF rumen ph

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Insect Science 2024年第3期31卷 707-719页

作者： Yun-Yun Fan yao Chi Na Chen Wilmer j.Cuellar Xiao-Wei Wang Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang ProvinceInstitute of Insect SciencesZhejiang UniversityHangzhouChina Zhejiang Tianmushan National Nature Reserve Administration HangzhouChina Institute of Plant Protection Liaoning Academy of Agricultural SciencesShenyangChina Virology Laboratory Cassava ProgramInternational Center for Tropical Agriculture(CIAT)PalmiraColombia

Sri Lankan cassava mosaic virus(SLCMV)is a prominent causative agent of cassava mosaic disease in Asia and relies on the whitefly Bemisia tabaci cryptic complex for its ***,the molecular mechanisms involved in SLCMV transmission by *** have yet to be *** this study,we identified an aminopeptidase N-like protein(BtAPN)in *** Asia II 1,an efficient vector of SLCMV,which is involved in the SLCMV transmission *** the use of glutathione S-transferase pull-down assay and LC-MS/MS analysis,we demonstrated the interaction between BtAPN and the coat protein(CP)of *** interaction was further confirmed in vitro,and we observed an induction of BtAPN gene expression following SLCMV *** interfering with the function of BtAPN,the quantities of SLCMV were significantly reduced in various parts of *** Asia II 1,including the whole body,midgut,hemolymph,and primary salivary ***,we discovered that BtAPN is conserved in *** Middle East-Asia Minor 1(MEAM1)and interacts with the CP of tomato yellow leaf curl virus(TYLCV),a begomovirus known to cause severe damage to tomato *** BtAPN with antibody led to a significant reduction in the quantities of TYLCV in whitefly whole body and organs/*** results demonstrate that BtAPN plays a generic role in interacting with the CP of begomoviruses and positively regulates their acquisition by the whitefly.

关键词： BtAPN coat protein SLCMV TYLCV virus acquisition whitefly

The quasi-Gramian solution of a non-commutative extension of the higher-order nonlinear Schr?dinger equation

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Communications in Theoretical Physics 2024年第3期76卷 51-61页

作者： h W A Riaz j Lin Department of Physics Zhejiang Normal UniversityJinhua 321004China

The nonlinear Schr?dinger(NLS)equation,which incorporates higher-order dispersive terms,is widely employed in the theoretical analysis of various physical *** this study,we explore the non-commutative extension of the higher-order NLS *** treat real or complex-valued functions,such as g_(1)=g_(1)(x,t)and g_(2)=g_(2)(x,t)as non-commutative,and employ the Lax pair associated with the evolution equation,as in the commutation *** derive the quasi-Gramian solution of the system by employing a binary Darboux *** soliton solutions are presented explicitly within the framework of *** visually understand the dynamics and solutions in the given example,we also provide simulations illustrating the associated ***,the solution can be used to study the stability of plane waves and to understand the generation of periodic patterns within the context of modulational instability.

关键词： integrable systems Darboux transformation solitons

Electrochemical deposition of Li_(2)S_(2)/Li_(2)S in aprotic Li–S batteries

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Particuology 2024年第7期90卷 516-521页

作者： Zhifeng yao Xiaozhong Fan Long Kong School of Civil Engineering Xi'an University of Architecture&TechnologyXi'an 710055China Institute of Flexible Electronics(IFE) Northwestern Polytechnical UniversityXi'an 710129China

Lithium–sulfur(Li–S)batteries stand out the energy storage systems because of extremely high energy density(2600 W h Kg−1)and low-cost sulfur ***,the sluggish deposition from liquid Li polysulfides(LiPSs)to solid Li2S leads to mild power density and short cycle *** and regulating Li_(2)S_(2)/Li2S deposition are conceived to be importance to deliver second-plateau capacity in acceptable kinetics,which has the potential to operation Li–S batteries under electrolyte-lean *** perspective aims to summarize the proposed models that can describe the nucleation and propagation of three-dimensional Li_(2)S_(2)/Li2S,as well as affords critical views how electrolyte dictates LiPS conversion from liquid to *** hopes to encourage necessary scaffold strategies and electrolyte formulations to further improve energy density and life span of Li–S batteries.

关键词： Lithium–sulfur batteries Electrolyte Li_(2)S precipitation Characterization

Dietary protein level affects endogenous amino acid losses measured by the 3h-leucine single injection method in broilers

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Dietary protein level affects endogenous amino acid losses m...

Exploring the potential of olivine-containing copper-nickel slag for carbon dioxide mineralization in cementitious materials

低碳经济与高效养殖——第六次全国饲料营养学术研讨会暨动物营养学分会成立三十周年大会

作者： M.Xu,X.B.Wu,D.L.Meng,and j.h.yao~※(Northwest A&F University,Yangling,Shaanxi,China,712100)

This experiment was conducted to evaluate the effect of dietary protein level on endogenous amino acid losses(EAAL) determined by the h-Leu single injection method proposed by our research *** female broilers were randomly divided into 4 treatments with five replicates of one *** broilers were force-fed nitrogen-free diet(NFD),16%,18%,and 20%crude protein(CP) *** the force-feeding,broilers wereThis experiment was conducted to evaluate the effect of dietary protein level on endogenous amino acid losses(EAAL) determined by the h-Leu single injection method proposed by our research *** female broilers were randomly divided into 4 treatments with five replicates of one *** broilers were force-fed nitrogen-free diet(NFD),16%,18%,and 20%crude protein(CP) *** the force-feeding,broilers were

关键词： endogenous amino acid protein single injection broiler

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International journal of Minerals,Metallurgy and Materials 2024年第3期31卷 562-573页

作者： Qianqian Wang Zequn yao Lijie Guo Xiaodong Shen College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211816China State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing 211816China BGRIMM Technology Group Beijing 100160China

Water-quenched copper-nickel metallurgical slag enriched with olivine minerals exhibits promising potential for the production of CO_(2)-mineralized cementitious *** this work,copper-nickel slag-based cementitious material(CNCM)was synthesized by using different chemical activation methods to enhance its hydration reactivity and CO_(2) mineralization *** water curing ages and carbonation conditions were explored related to their carbonation and mechanical properties ***,thermogravimetry differential scanning calorimetry and X-ray diffraction methods were applied to evaluate the CO_(2) adsorption amount and carbonation products of *** development of carbonated CNCM blocks was examined by backscattered electron imaging(BSE)with energy-dispersive X-ray *** showed that among the studied samples,the CNCM sample that was subjected to water curing for 3 d exhibited the highest CO_(2) sequestration amount of 8.51wt%at 80℃and 72 h while presenting the compressive strength of 39.07 *** result indicated that 1 t of this CNCM can sequester 85.1 kg of CO_(2) and exhibit high compressive *** the addition of citric acid did not improve strength development,it was beneficial to increase the CO_(2) diffusion and adsorption amount under the same carbonation conditions from BSE *** work provides guidance for synthesizing CO_(2)-mineralized cementitious materials using large amounts of metallurgical slags containing olivine minerals.

关键词： copper-nickel slag fayalite CO_(2)sequestration cementitious material admixtures carbonation conditions