EFFECTS OF PASSIVE STRETCH ON SOLEUS MUSCLE ATROPHY IN IMMOBILIZED RATS

Ｐｒｅｖｉｏｕｓｓｔｕｄｉｅｓｒｅｐｏｒｔｅｄｔｈａｔｓｋｅｌｅｔａｌｍｕｓｃｌｅｍｉｇｈｔｄｅｖｅｌｏｐｏｂｖｉｏｕｓａｔｒｏｐｈｙｗｈｅｎｓｈｏｒｔｅｎｅｄｉｍ ｍｏｂｉｌｉｚａｔｉｏｎｗａｓａｐｐｌｉｅｄ ,ｔｈｅｍａｉｎｍａｎｉｆｅｓｔａｔｉｏｎｓｗｅｒｅｔｈｅｒｅｄｕｃｔｉｏｎｉｎｍｕｓｃｌｅｗｅｉｇｈｔ,ｓｈｒｉｎｋｉｎｇｏｆｔｈｅｆｉｂｅｒＣＳＡａｎｄｔｈｅｔｒａｎｓｆｏｒｍａｔｉｏｎｏｆｍｕｓｃｌｅｆｉ ｂｅｒｔｙｐｅｓ[1-3] ,ｔｈｅｍｅｃｈａｎｉｓｍｏｆｗｈｉｃｈｉｓｓｔｉｌｌｕｎ …     

用线段分析法确定四行程发动机气门调整顺序

为了改善换气,在新型汽车发动机上多采用每缸4个,甚至5个气门结构,并使多气门发动机在各种转速下都有良好的动力性与燃料经济性,采用液压挺柱,根据物理特性,可自动缩短或伸长挺柱,保证气门关闭紧密且使气门机构无间隙。     

Zeugma与拈连的对比研究及运用

Zeugma与汉语拈连分别是英语和汉语中修辞效果很好的修辞手段，恰当和巧妙运用它们能增加语言的表现力，使所表达的语言简练生动，更富感染力，达到特殊的修辞效果．本文从涵义、表现形式、特点等方面分析和探讨了Zeugma与拈连的相同和不同之处，并指出在使用和英汉互译时应注意的问题．通过对这两种修辞格的对比研究，旨在提高语言理解、欣赏及表达能力．     

浅埋大断面黄土隧道CRD法快速施工技术

结合郑西客运专线秦东隧道施工实例,介绍该隧道出口浅埋段采用CRD法施工的施工方法和施工工艺,以及各个工序的机械、人员配备情况。并介绍在保证安全质量前提下,如何对原设计工法进行局部优化采取的措施,以及加快施工进度的具体做法。     

复杂分支轴系扭振计算的动态矩阵法

讨论了目前国内外在船舶推进轴系扭转振动计算中所应用的诸多方法，比较了它们的优缺点。在此基础上，提出应用改进的动态矩阵法进行船舶推进轴系的扭振计算，并论述了该方法的理论基础，使其能更加简单、方便地解决船舶复杂分支推进轴系的扭转振动计算。最后还列举了实际算例的扭振计算，证明此方法在解决船舶推进轴系扭振计算方面是一种有效、方便的方法。     

广州市粮食储备加工中心码头工程装卸工艺设计分析

对散粮码头和袋装粮食码头的装卸工艺设计分析。     

生长时间对水热微乳液法制备氧化锌晶须形貌的影响

采用水热微乳液法制备了纳米级尺寸的四针氧化锌晶须,利用热重及X射线衍射对产物结构进行了分析,着重探讨了生长时间对晶须尺寸和形貌的影响.在较短的生长时间下,产物主体结构为四针状氧化锌晶须,随着生长时间的增加,花状晶须含量逐渐增多,并且晶须出现了二次生长,针体上富集了大量微细晶须.     

Asymmetric deformation of near hemispherical diaphragm under uniform surface load

The asymmetric deformation and eccentricity problems of near hemispherical diaphragm under the uniform surface load are quantitatively characterized in the paper. The analysis is based on a 3D finite element analysis (FEA) model established according to elastic-plasticity and large displacement nonlinear finite element method. Besides, the deformation experiments are taken to validate the reliability of FEA model which shows that the simulation results are in good agreement with the experimental results. Then, three angle parameters, deflection angle β, circumvolving angle θ and distributing angle γ, are introduced and expressed to characterize the asymmetric deformation and eccentricity quantitatively. According to the angle parameters, the inversion processes of uniform thickness diaphragm and varying thickness diaphragm are calculated respectively. The inversion process of varying thickness diaphragm is much steadier than that of uniform thickness diaphragm. The present results show that the asymmetric deformation process can be characterized by curve of three angle parameters (β, θ, γ) exactly, the degrees of eccentricity can be indicated by the final value of deflection angle and the eccentricity position can be characterized by the final values of the three angle parameters.     

Numerical analysis of material properties in deformation of near hemispherical shells

In this paper, the effects of hardening exponent, yield strength and elastic modulus on the deformability of near hemispherical shells are investigated by means of finite element method and orthogonal experiment design. The largest eccentric angle during the deformation process and thickness reduction after the deformation are introduced to estimate the deformability quantitatively according to the deformation characteristics of near hemispherical shells. The results indicate that the hardening exponent is the most influential parameter, followed by elastic modulus and yield strength. The shell exhibits good deformability when the hardening exponent and elastic modulus are in the range of 0.1–0.125 and 70–108 GPa, respectively.     

珠江电厂扩建煤码头装卸工艺方案设计

珠江电厂煤码头拟扩建1个7万t级卸煤泊位,改造建设1个1 000 t级和1个2 000 t级装煤泊位.本文就其装卸工艺方案设计要点及码头设备选型等进行分析介绍. 1 设计依据 为满足企业的生产发展需要,建立煤炭资源供给、运输、中转及营销网络一体化的经营体制,要求本工程卸煤泊位的计划任务量为650万t/a,装煤泊位的计划任务量为400万t/a. 本工程的设计代表船型为7万t级散货船和2 000 t级、1 000 t级散货驳船.