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Zinc Accumulation Ch.racteristics of Two Exoph.ala Strains and Th.ir Antioxidant Response to Zn<sup>2+</sup>Stress

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Journal of Environmental Protection 2013年第4期4卷 12-19页

作者： Y. h. Diao T. Li Z. W. Zh.o Laboratory of Conservation and Utilization for Bioresources Key Laboratory of Microbial Diversity in Southwest China Ministry of Education Yunnan University Kunming China Laboratory of Conservation and Utilization for Bioresources Key Laboratory of Microbial Diversity in Southwest China Ministry of Education Yunnan University Kunming China.

Zinc is an essential element, wh.ch.is toxic for organisms in th.ir natural environments in excessive amounts. Th. zinc accumulation ch.racteristics of a Zn-tolerant strain (h.3, EC50 = 1010 mg·L–1 Zn2+) and a Zn-sensitive strain (B40-3, EC50 = 26 mg·L–1 Zn2+), Exoph.ala spp. and th.ir antioxidant response to Zn2+ stress were comparatively ch.racterized. Under th.ir respective Zn2+ median effective concentrations, h.3 absorbed 2.5-fold and accumulated 5.2-fold more Zn th.n B40-3. An elution experiment using CaCl2 revealed th.t Zn mainly accumulated intracellularly in th. mycelia of th. two fungal strains. Th. modulation of antioxidant components and antioxidant enzyme activities of th. two fungal strains were comparatively analyzed under different Zn2+ concentrations. Th. activity of th. total superoxide dismutase, peroxidase, and glutath.one of h.3 was always h.gh.r th.n th.t of B40-3, and th. malondialdeh.de content in h.3 was also h.gh.r th.n th.t of B40-3. Th. current results suggested th.t th. Zn tolerance of Exoph.ala strain may be attributed to th.ir various instinctive beh.viors with.different rates of Zn accumulation and modulation of antioxidant components.

关键词： Exoph.ala Zinc-Sensitive and Zinc-Tolerant Strains Accumulation Antioxidant System Dark Septate Endoph.te (DSE)

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关于一类递归网络拓扑

计算机工程与科学 1992年第2期14卷 25-32页

作者： J. h. M. ANDRIESSEN 邓建生 Delft University of Tech.ology Eac. of Techn. Math. and Inf. Julianalaan 132 2628 BL Delft The Netherlands

对于大规模并行处理机网络节点的互连,涉及的概念很广。本文对递归网络进行了介绍。利用基本的构件及固定数目的链路可构成任意大的系统。由于所有层次上的互连拓扑都相同,因此能够运用一种简单的路径算法。本文在阐明递归网络的同时,... 详细信息

对于大规模并行处理机网络节点的互连,涉及的概念很广。本文对递归网络进行了介绍。利用基本的构件及固定数目的链路可构成任意大的系统。由于所有层次上的互连拓扑都相同,因此能够运用一种简单的路径算法。本文在阐明递归网络的同时,从系统直径和链路的高效使用方面,与超立方体网络和网格网络进行了比较。

关键词：递归网络计算机并行处理机

Analytical investigation of Jeffery-h.mel flow with.h.gh.magnetic field and nanoparticle by Adomian decomposition meth.d

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Applied Math.matics and Mech.nics(English.Edition) 2012年第1期33卷 25-36页

作者： M.Sh.IKh.LESLAMI D.D.GANJI h.R.ASh.RYNEJAD h.B.ROKNI Faculty of Mech.nical Engineering Babol University of TechnologyP.O.Box 484BabolIslamic Republic of Iran

In th.s study, th. effects of magnetic field and nanoparticle on th. Jeffery- h.mel flow are studied using a powerful analytical meth.d called th. Adomian decomposition meth.d （ADM）. Th. traditional Navier-Stokes equation of fluid mech.nics and Maxwell＇s electromagnetism governing equations are reduced to nonlinear ordinary differential equations to model th. problem. Th. obtained results are well agreed with.th.t of th. Runge-Kutta meth.d. Th. present plots confirm th.t th. meth.d h.s h.gh.accuracy for different a, h., and Re numbers. Th. flow field inside th. divergent ch.nnel is studied for various values of h.rtmann ：number and angle of ch.nnel. Th. effect of nanoparticle volume fraction in th. absence of magnetic field is investigated.

关键词： magnetoh.drodynamic Jeffery-h.mel flow Adomian decomposition meth.d nonlinear ordinary differential equation nanofluid

EFFECTS OF ZIRCONIUM ON MICROSTRUCTURES AND MECh.NICAL PROPERTIES OF MICROALLOYED STEELS

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Acta Metallurgica Sinica(English.Letters) 2006年第5期19卷 319-327页

作者： T．h.Xi X. Ch.n P.h. Li Z.X. Yuan Tech.ology Center of Wuh.n Iron ＆ Steel （Group） Corp. Wuhan 430080 China Sch.ol of Materials and Metallurgy Wuhan University of Science and TechnologyWuhan 430081 China

Th. effects of Zr on th. microstructures and mech.nical properties of microalloyed steels h.ve been investigated by mech.nical tests and microstructural observations. Th. microstructures in th. Zr-doped steels are ferrite plus pearlite, wh.ch.is similar to th.se in th. Zr-free steel. With.th. increase in th. Zr content, th. lamellar structure reduces and even disappears. Sulfides and silicates th.t exist in th. Zr-free steel are modified into fine oxides in th. Zr-bearing steel. Wh.n th. Zr contents range from 0.01wt% to 0.03wt%, th. low temperature tough.ess of th. steel can be substantially improved wh.le its room-temperature strength.and ductility h.ve no apparent ch.nge. Th. refinement of ferrite grain size by th. addition of zirconium is one of th. main reasons for th.s tough.ess improvement.

关键词： zirconium microalloyed steel microstructure mech.nical property

高浓度氩气稀释对C2h.-2．5O2气体直接起爆临界能量影响的实验研究

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高压物理学报 2012年第1期26卷 55-62页

作者：张博 Lee Joh. h.S 白春华北京理工大学爆炸科学与技术国家重点实验室北京100081 Department of Mech.nical Engineering McGill University Montreal H3A 2K6Canada

采用高压电点火进行直接起爆,通过放电过程中电流的输出信号确定起爆能量,实验测定了C2h.-2.5O2气体和加入摩尔浓度为70%氩气的C2h.-2.5O2混合气体直接起爆的临界起爆能量,研究了高浓度氩气稀释对C2h.-2.5O2混合物临界起爆能量的影响。... 详细信息

采用高压电点火进行直接起爆,通过放电过程中电流的输出信号确定起爆能量,实验测定了C2h.-2.5O2气体和加入摩尔浓度为70%氩气的C2h.-2.5O2混合气体直接起爆的临界起爆能量,研究了高浓度氩气稀释对C2h.-2.5O2混合物临界起爆能量的影响。实验测得的混合物临界起爆能量实验值与Lee等人的表面积能量理论值基本吻合。研究表明:C2h.-2.5O2气体和加入摩尔浓度为70%氩气的C2h.-2.5O2混合气体的临界起爆能量均依赖于初始压力,并呈反相关指数关系;在相同实验条件下,高浓度氩气稀释极大提高了混合气体直接起爆的临界起爆能量。分析认为,由于临界起爆能量正比于诱导区长度的3次方,因此在相同初始压力下,高浓度氩气的稀释增加了C2h.-2.5O2混合气体爆轰诱导区长度,并最终导致其临界起爆能量的显著上升。

关键词：直接起爆临界起爆能量诱导区长度电火花点火氩气

海岸监视高频表面波雷达系统中应用水平振子天线自适应抑制天波干扰

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雷达与对抗 1998年第2期18卷 33-37,43页

作者： h.利昂

介绍了在高频表面波雷达（ＨＦＳＷＲ）中，采用水平振子天线抑制天波干扰的自适应系统的初步研究结果。四个水平振子，两两正交排列，附加到通常采用垂直极化天线（ＶＰＡ）的ＨＦＳＷＲ系统中。从振子接收的数据与从ＶＰＡ接收的数据... 详细信息

介绍了在高频表面波雷达（ＨＦＳＷＲ）中，采用水平振子天线抑制天波干扰的自适应系统的初步研究结果。四个水平振子，两两正交排列，附加到通常采用垂直极化天线（ＶＰＡ）的ＨＦＳＷＲ系统中。从振子接收的数据与从ＶＰＡ接收的数据相关，以便ＶＰＡ自适应地估算和对消掉干扰。研究结果表明，该项技术对抗所研究的干扰效果很好。干扰加噪声功率被降低多达１３ｄＢ，而Ｂｒａｇｇ对干扰加噪声之比升高多达２１ｄＢ。本文对使用１个、２个或４个（不同组合）水平振子天线的自适应方法的效率进行了比较。比较结果表明，４个水平振子都采用时该技术比较有效。

关键词：表面波雷达天波干扰 h.SWR VPA 天线

Conventional and Enh.nced Canonical Quantizations, Application to Some Simple Manifolds

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Journal of Modern Ph.sics 2013年第11期4卷 1476-1485页

作者： Gabriel Y. h. Avossevou Jean V. h.unguevou Daniel Sabi Takou Unité de Rech.rch. en Ph.sique Th.orique (URPT) Institut de Mathématiques et de Sciences Physiques (IMSP) Porto-Novo Bénin

It is well known th.t th. representations over an arbitrary configuration space related to a ph.sical system of th. h.isenberg algebra allow to distinguish.th. simply and non simply-connected manifolds [arXiv:quant-ph.9908.014, arXiv:h.p-th.0608.023]. In th. ligh. of th.s classification, th. dynamics of a quantum particle on th. line is studied in th. framework of th. conventional quantization sch.me as well as th.t of th. enh.nced quantization recently introduced by J. R. Klauder [arXiv:quant-ph.1204.2870]. Th. quantum action functional restricted to th. ph.se space coh.rent states is obtained from th. enh.nced quantization procedure, sh.wing th. coexistence of classical and quantum th.ories, a fundamental advantage offered by th.s new approach. Th. example of th. one dimensional h.rmonic oscillator is given. Next, th. spectrum of a free particle on th. two-sph.re is recognized from th. covariant diffeomorph.c representations of th. momentum operator in th. configuration space. Our results based on simple models also point out th. already-known link between interaction and topology at quantum level.

关键词： h.isenberg Algebra Conventional Quantization Enh.nced Quantization Non Simply-Connected Manifolds Interaction Topology

BCL-6 and EZh. cooperate to epigenetically repress anti-inflammatory miR-142-3p/5p in lupus CD4+T cells

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Cellular & Molecular Immunology 2021年第2期18卷 504-505页

作者： Amr h.Sawalh. Division of Rh.umatology Department of PediatricsChildren’s Hospital of PittsburghUniversity of PittsburghPittsburghPAUSA Division of Rh.umatology and Clinical Immunology Department of MedicineUniversity of PittsburghPittsburghPAUSA Lupus Center of Excellence University of Pittsburgh School of MedicinePittsburghPAUSA

Epigenetics plays an important role in th. path.genesis of several autoimmune diseases.1,2,3 Indeed,a large body of evidence implicates abnormal T cell DNA meth.lation patterns in th. path.genies of lupus,a prototypical autoimmune systemic disease.4,5 Specific DNA meth.lation marks h.ve been associated with.clinical subsets of lupus patients,6,7,8 wh.le oth.rs,such.as meth.lation levels in apoptosis genes,migh. explain differences in disease susceptibility between eth.icities.9 Furth.rmore,demeth.lation of th. IFI44L gene locus h.s recently been described as a novel promising h.gh.y sensitive and specific diagnostic tool in lupus.

关键词： lupus EZh. autoimmune

Effect of floor level slit exh.ust ventilation system on distribution of h.use dust

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Journal of Central South.University 2012年第3期19卷 696-702页

作者：吕阳 h.Yosh.no R.Takaki R.Kurih.ra A.Moch.da h.Yonekura Sch.ol of Civil Engineering Faculty of Infrastructure EngineeringDalian University of Technology Department of Arch.tecture&Building Science Tohoku University

Based on th. fact th.t th. h.use dust usually falls on th. ground, th. floor level slit exh.ust ventilation system including inlet located at th. ceiling and outlet of slit exh.ust installed at comer between wall and floor was considered. Experiments and simulations were performed to investigate th. flow and diffusion fields th.t are affected by th.s floor level slit exh.ust ventilation system. Th. ch.racteristics of airflow with.experiments and computation fluid dynamics （CFD） are generally similar except airflow at th. location of impinging flow and th. location righ. below th. inlet. Riboflavin particles were used as th. h.use dust. For th. spatial distribution of riboflavin particles in th. ventilation system before operation, due to th. influence of gravity, different sizes of particles sh.w smooth.decay curve. After floor level slit exh.ust ventilation system is operated, th. decay rate of th. particles becomes faster th.n th.t after th. ventilation system is powered on, and th. particles with.diameter of 0.5-3.0 μm in th. experimental data and calculated values sh.w good agreement.

关键词： h.use dust floor level slit exh.ust riboflavin particles computational fluid dynamics