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Effect of Europium chloride on callus Growth and cell Ultrastructure of Rheum

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Journal of Rare Earths 1999年第2期17卷 57-59页

作者： Lu, Kuanke chen, Baowei Wang, Kui Guo, dean Zheng, Junhua Beijing Medical Univ Beijing China

Effect of Eucl3 on the callus growth and cell ultrastructure of Rheum was studied. the effect of Eucl3 on the growth of the callus was a biphasic one, with stimulation at low concentrations, and inhibition at higher concentrations. the explants would die when the concentration of Eucl3 was 100 mgL-1. the stimulative effect of Eucl3 could be inhibited by calmodulin antagonistchlorpromazine. 10 mgL-1 of Eucl3 would cause variations of the cell ultrastructure.

关键词： Rare earths Eucl3 calmodulin callus

Medium-chain fatty acids and monoglycerides as feed additives for pig production:towards gut health improvement and feed pathogen mitigation

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Journal of Animal Science and Biotechnology 2020年第3期11卷 611-625页

作者： Joshua A.Jackman Rdean Boyd charles c.Elrod School of chemical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea Hanor company FranklinKY 42134USA North carolina State University RaleighNC 27695USA Natural Biologics Inc. NewfieldNY 14867USA Department of Animal Science Cornell UniversityIthacaNY 14853USA.

Ongoing challenges in the swine industry,such as reduced access to antibiotics and virus outbreaks(e.g.,porcine epidemic diarrhea virus,African swine fever virus),have prompted calls for innovative feed additives to support pig ***-chain fatty acids(McFAs)and monoglycerides have emerged as a potential option due to key molecular features and versatile functions,including inhibitory activity against viral and bacterial *** this review,we summarize recent studies examining the potential of McFAs and monoglycerides as feed additives to improve pig gut health and to mitigate feed *** molecular properties and biological functions of McFAs and monoglycerides are first introduced along with an overview of intervention needs at different stages of pig *** latest progress in testing McFAs and monoglycerides as feed additives in pig diets is then presented,and their effects on a wide range of production issues,such as growth performance,pathogenic infections,and gut health,are *** utilization of McFAs and monoglycerides together with other feed additives such as organic acids and probiotics is also described,along with advances in molecular encapsulation and delivery ***,we discuss how McFAs and monoglycerides demonstrate potential for feed pathogen mitigation to curb disease *** forward,we envision that McFAs and monoglycerides may become an important class of feed additives in pig production for gut health improvement and feed pathogen mitigation.

关键词： Antibiotics Feed pathogen mitigation Growth promotion Gut health Immune enhancement McFA Medium-chain fatty acids Monoglycerides

Bulk nanocrystalline W-ti alloys with exceptional mechanical properties and thermal stability

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Journal of Materials Science & technology 2022年第19期114卷 16-28页

作者： H.X.Xue X.c.cai B.R.Sun X.Shen c.c.Du X.J.Wang t.t.Yang S.W.Xin t.D.Shen clean Nano Energy center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China cSSc 723rd Research Institute China State Shipbuilding Corporation LimitedYangzhou 225000China

Nanocrystalline(Nc)W metals and alloys often exhibit higher radiation tolerance and strength than their coarse-grained ***,their thermal stability is low,making it difficult to achieve bulk Nc W metals and alloys by consolidation using conventional techniques such as pressure-less sintering,hot-explosive-compaction sintering,and spark plasma *** we report the synthesis and mechanical properties of bulk Nc W_(100-x)ti_(x)(x=10 at.%-30 at.%)alloys prepared by consolidating mechanically alloyed Nc powders under a high-temperature/high-pressure *** 20 at.%-30 at.%ti largely improves the sinterability of Nc W-ti alloy *** room-temperature microhardness and compressive yield strength of consolidated bulk Nc W_(80)ti_(20) alloy are∼16.9 and 6.0 GPa,respectively,which are mainly caused by grain boundary strengthening and significantly higher than those of previously reported W and W *** ultimate compressive strength of bulk Nc W_(80)ti_(20) measured between 900 and 1100°c deceases with increasing *** behavior can be explained by the activation of Rachinger grain boundary *** grain growth is observed in bulk Nc W_(80)ti_(20) after compression at 1000°*** calculation suggests that it is the segregation of ti at grain boundaries that decreases the specific grain boundary free energy and makes the Nc W_(80)ti_(20) alloy thermodynamically stable.

关键词： Nanocrystalline W-ti alloys Segregation Grain boundary energy Strength Hardness

Metal-organic frameworks (MOFs) in aqueous batteries (ABs):unlocking potential through innovative materials design

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Science china chemistry 2025年

作者： Bo Han Erhai Hu Bei-Er Jia Ziyang Liu Shuen tso Afriyanti Sumboja Ivandini t.Anggraningrum Anne Zulfia Syahrial Qingyu Yan ScARcE Laboratory Energy Research Institute NTU (ERIN) Nanyang Technological University School of Materials Science and Engineering Nanyang Technological University Material Science and Engineering Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Department of chemistry University of Indonesia Metallurgical & Materials Engineering Department Fakultas Teknik Universitas Indonesia

Metal-organic frameworks (MOFs) represent a revolutionary class of materials in the field of energy storage,particularly for aqueous batteries (ABs).Distinguished by their large surface area,tuneable porosity,and adaptable chemical activity,MOFs offer significant advantages over conventional materials in battery *** article provides a thorough analysis of the crucial role that MOFs play in improving the efficiency of *** includes a concise review of the current research progress,emphasizing the fundamental processes by which MOFs enhance electrochemical ***,the review examines the synthesis and design strategies for the structure of MOFs to maximize ion transport,improve conductivity,and enhance *** structural advantages,chemical versatility,stability,durability and functionalization potential of MOFs are comprehensively ***,we explore the distinct advantages of MOFs in overcoming common challenges encountered in ABs,such as declining capacity,inadequate cycling stability,and limited energy *** paper also highlights the future research directions needed to fully harness their *** goal is to develop a fundamental understanding and stimulate further progress in the use of MOFs for advanced energy storage solutions.

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Numerical simulation of a sheet metal extrusion process by using thermal-mechanical coupling EAS FEM

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Journal of University of Science and technology Beijing 2002年第5期9卷 378-382页

作者： Zhanghuachen t.c.Lee 等 AppliedScienceSchool UniversityofScienceandTechnologyBeijingBeijing100083China DepartmentofIndustrialsystemEngineering TheHongKongPolytechnicunivetsityChina

the thermal-mechanical coupling finite element method(FEM)was usedto simulate a non-isothermal sheet metal extrusion process. On thebasis of the finite plasticity consistent with multiplicativedecomposition of the deformation gradient, the enhanced as- sumedstrain(EAS)FEM was applied to carry out the numerical simulation. Inorder to make the computation reliable ad avoid hour- glass mode inthe EAS element under large compressive strains, an alterative formof the original enhanced deformation gradient was employed. Inaddition, reduced factors were used in the computation of the elementlocal internal parameters and the enhanced part of elementalstiffness.

关键词： enhanced assumed strain element thermal-mechanical coupling process houyrglass mode

Fullwave Doppler reflectometry simulations for density turbulence spectra in ASDEX Upgrade using GENE and IPF-FD3D

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Plasma Science and technology 2020年第6期22卷 41-48页

作者： c LEcHtE G D cONWAY tGÖRLER t HAPPEL the ASDEX Upgrade team Institute of Interfacial Process Engineering and Plasma technology IGVP Universität StuttgartD-70569 StuttgartGermany Max-Planck-Institute for Plasma Physics D-85748 GarchingGermany 不详

Doppler reflectometry is an important microwave diagnostic for turbulent fusion plasmas.A microwave beam is scattered off density fluctuations,with wavenumbers according to incident frequency and relative *** way,a density fluctuation spectrum is ***,the correspondence between fluctuation power and scattered microwave power is strongly *** these processes numerically therefore requires fullwave simulations(IPF-FD3 D),with density fluctuations supplied by a separate plasma turbulence code(GENE).Earlier such attempts suffered from the low number of data points in the‘interesting’part of the spectrum,where a power law had to be fitted to 4 or 5 *** has been overcome with recent simulations,which now show a much better agreement with experimental data.

关键词： plasma diagnostics Doppler reflectometry simulation microwaves

Progress of Pattern Dynamics in Plasma Waves

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communications in computational Physics 2008年第10期4卷 1129-1150页

作者： B.Qiao c.t.Zhou X.t.He c.H.Lai center for Plasma Physics Department of Physics and AstronomyQueen’s University BelfastBelfast BT71NNUK Department of Physics National University of SingaporeSingapore 117542 Institute of Applied Physics and computational Mathematics P.O.Box 8009Beijing 100088China center for Applied Physics and technology Peking UniversityBeijing 100871China Institute for Fusion theory and Simulation Zhejiang UniversityHangzhou 310027China Beijing-Hong Kong-Singapore Joint centre for Nonlinear&complex Systems(Singapore) National University of SingaporeSingapore 117542.

this paper is concerned with the pattern dynamics of the generalized nonlinear Schrodinger equations(NSEs)relatedwith various nonlinear physical problems in *** theoretical and numerical results show that the higher-order nonlinear effects,acting as a Hamiltonian perturbation,break down the NSE integrability and lead to chaotic ***,coherent structures are destroyed and replaced by complex *** orbit crossings in the phase space and stochastic partition of energy in Fourier modes show typical characteristics of the stochastic *** investigations show that nonlinear phenomena,such as wave turbulence and laser filamentation,are associated with the homoclinic *** particular,we found that the unstable manifolds W(u)possessing the hyperbolic fixed point correspond to an initial phase θ=45° and 225° ,and the stable manifolds W(s)correspond toθ=135° and 315° .

关键词： Pattern dynamics homoclinic chaos nonlinear Schrodinger equations plasma waves

Genetic variation and superior provenances selection for wood properties of Larix olgensis at four trials

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Journal of Forestry Research 2022年第6期33卷 1867-1879页

作者： Heng Zhang Shikai Zhang Shuopeng chen dean Xia chuanping Yang Xiyang Zhao State Key Laboratory of tree Genetics and Breeding School of ForestryNortheast Forestry UniversityHarbin 150040People’s Republic of China

Larix olgensis,one of the most important timber species in northeastern china,is used for paper making and *** this study,10 wood properties(wood density,fiber length,fiber width,fiber length-to width ratio,hemicellulose content,cellulose content,holocellulose content,lignin content,ash content,and carbon content)of 10 provenances of *** planted at sites of cuoHai(cH),JiaGeDaQi(JGDQ),LiangShui(LS),and Mao'erShan(MES)were *** results of ANOVA showed that almost traits differed significantly among locations and provenances,with a significant interaction *** trait also differed significant among provenances within *** phenotypic and genetic coefficient of variation(PcV and GcV)and provenance heritability(H 2)for wood properties ranged from 1.122 to 27.365%,from 0.564%to 21.113%and from 0.332 to 0.996,respectively.A correlation analysis showed that wood density was significantly negatively correlated with cellulose content and holocellulose content at sites cH,JGDQ,and LS,but were significantly positively correlated at site *** density was significantly negatively correlated with lignin content at cH and JGDQ,but not at LS and *** width(FW)was negatively correlated with the ratio of fiber length(FL)to width across sites,and FW and FL/W were all positively correlated with *** content was significantly positively correlated with hemicellulose content at site JGDQ and significantly negatively correlated with cellulose content and with holocellulose content at site ***,carbon content was positively correlated with cellulose content and holocellulose content at cH,but negatively correlated with these two traits at site *** a correlation analysis of wood properties with geographic,soil and climatic characteristics at the four sites,wood properties were mainly correlated with latitude and altitude of the site and affected by the average annual precipitation and temperature *** select supe

关键词： Larix olgensis Wood properties Genetic variation Provenance selection carbon content

cOORDINAtING A tWO-EcHELON SUPPLY cHAIN tHROUGH DIFFERENt cONtRActS UNDER PRIcE AND PROMOtIONAL EFFORt-DEPENDENt DEMAND

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Journal of Systems Science and Systems Engineering 2013年第3期22卷 295-318页

作者： B.c.GIRI S.BARDHAN t.MAItI Department of Mathematics Jadavpur UniversityIndia

Retail price and promotional effort are two important parameters on which demand of a commodity largely depends. this paper develops and analyzes a two-echelon supply chain where market demand depends on both retail price and sales effort. the centralized model is studied as the benchmark case, and the wholesale price-only contract is studied as the base case in which each entity tries to maximize its individual profit. Different contract mechanisms are implemented to outperform the base case in terms of both total chain＇s as well as individual profits. comparisons among the coordinating contracts are provided so that any entity may choose the better one from available contracts after the contract parameters are negotiated. the model is extensively examined through a numerical example.

关键词： Price and effort-dependent demand wholesale price-only contract wholesale price discount revenue sharing profit sharing two-part tariff