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Methods Four three-dimensional finite element models were constructed by the data of spiral CT:1Mandibular second premolar restored directly by full crown;2Fill the perforating cavity with resin material and full crown restoration;3Cast nickel chromium alloy post core plus full crown restoration;4Fiber post and resin core plus...

方法采用螺旋式CT扫描获取数据,建立下颌第二前磨牙4种情况下的三维有限元模型:1直接全冠修复;2用树脂材料充填开髓洞形后全冠修复;3铸造镍铬合金桩核与全冠修复;4纤维桩树脂核与全冠修复。

It was the first time that physiological and biochemical changes during earlystage of gynogenesis were investigated.

明确了黄瓜离体雌核发育的细胞和形态学过程,发现雌核发育在培养的前6天即已启动和决定。

High-density material lying at the circumference of a proacrosomal vesicle was arched with a gap in Solen grandis, but round in Solen strictus. From this gap a proacrosomal vesicle of Solen grandis began to invaginate and deform while it moved to the nuclear front. However a proacrosomal vesicle of Solen strictus did not deform until it reached the nuclear front.

大竹蛏精细胞前顶体囊的高电子密度物质分布在周缘呈一个带缺口的弧形而不是圆形,而长竹蛏前顶体囊周缘的高电子密度物质呈一圆形分布;大竹蛏的前顶体囊是先内凹变形,然后一边变形一边移动,而长竹蛏的前顶体囊是在到达核前端后才开始变形。

When World War II ended the nucleus has lost US just to start Mai Hadu to plan the initial significance, it turned one kind of capital one kind to threaten for 0.6 ten years American and Soviet law China and Britain one after another to become five macronucleus great nations from now on, afterwards faces by India and Pakistan has one after another, but at the present Iran really for joins this ranks diligently 0.20 centuries speaking of the humanity without doubt is the multi-disaster century, is a war first, lets the humanity be involved in to front no death and the pain despairs, as soon as then follows is standing lives (death which the Madrid flu it creates to surpass a war fatality count) the humanity to fall into panic to, at the same time human cultureFaced with unprecedented test, but this kind of test still was continuing in fact, this tradition impelled the world with the non-traditional strategy balance to face the multistage development, finally caused the individual local conflict to be unceasing.

当二战结束时核已失去美国刚启动麦哈顿计划最初的意义,它已变成一种资本一种威胁。六十年过后美苏法中英相继成为五大核大国,之后以印巴朝相继拥有,而今伊朗真为加入该行列而努力。二十世纪对人类而言无疑是多灾的世纪,先是一战,让人类卷入到前所没有的死亡和痛苦绝望中,接着是伴随着一站而生马德里流感(其造成的死亡超过一战死亡数)人类陷入到更加得恐慌中,与此同时人类文明也面临着前所未有的考验,而事实上这种考验仍在延续,这种传统与非传统战略平衡推动着世界朝着多级化发展,最终导致个别地区争端不断。

Bnormal MRI manifestations in all of the 20 cases with acquired hepatocerebral degeneration,in which T1WI demonstrated increased signal in hibateral lentiform nucleus (n=20),globus pallidus(n=17),surrounding mesencephalon red nucleus(n=15),and in anterior pituitary(n=4)While T2WI demonstrated no corresponding alteration in signal intensityConclusion Abnormal MR signal in the patients with acquired hepatocerebral degeneration has special features and MRI has right value for the diagnosis of this disease

全部病例均有完备的临床与MRI资料。结果:20例脑部均有阳性MRI表现,其中双侧、豆状核20例,苍白球17例,中脑红核周围15例,垂体前叶4例,表现为自旋回波序列T1WI为高信号,T2WI及FLAIR像无异常。结论:获得性肝性脑部变性的MRI征象具有特征性,MRI对该病的诊断有较高价值。

RESULT: 1.Ouabain act on lens sodium-pump,under the LM,lens anterior capsular membrane discontinuous,epithelium cells clustered,occluding zonule seperated,lens fiber layers fractured.Under the EM,cells totally hollowed,mitochondria swelling,myelin figure appeared.RT-PCR examine the expression condition of αsubunit of sodium pump on mRNA level,α1、α2 and α3-isoform are all decreased.2.Digoxin act on lens sodium-pump,under the LM,lens cell oedema,linkage distructed,extensive exfoliation.Under the EM,plasma appeared little half-transparant hollow region,mitochondria swelling and ridge disappeared. RT-PCR examine,α1、α2 and α3-isoform are all decreased.3.Amphotericin B act on lens sodium-pump,under the LM,lens epithelium cells linked tightly,arranged in-line,lens fiber layers arranged tightly and regularily.Under the EM,abbundant cellular organes,exuberant cells function indicated. RT-PCR examine the expression condition of αsubunit of sodium pump on mRNA level,α1 and α3-isoform are increased significantly,demonstrated isoform-specific action.4D-thyroxine act on lens sodium-pump,under the LM,lens plasmalemma integrated,cells arranged tightly and regularily.Under the EM,nucleus fission appeared,desmosome half-desmosome and tensile microfilaments linked the cells. RT-PCR examine,α2 and α3-isoform are increased, also demonstrated isoform-specific action.5.Vitamin E act on lens sodium-pump,under the LM,lens anterior capsular membrane continuous and smooth,epithelium cells tightly linked,lens fiber layers appearede hollow region occasionally.Under the EM,lateral membrane high density belt appeared,abundant nucleolus. RT-PCR examine,onlyα1-isoform are increased, demonstrated significantly isoform-specific action.6.DMSO act on lens sodium-pump,under the LM,lens anterior capsular membrane slightly thicker,cells linkage partly distructed.Under the EM,plasmalemma denaturation,mitochondria swelling.RT-PCR examine,α1、α2 and α3-isoform are all altered slightly and haven't significant meanning.

结果:1、哇巴因作用于晶状体钠泵后,光镜下晶状体前囊膜断裂、上皮细胞聚积、闭合连接分离、纤维板层裂隙,电镜下全层细胞空泡化、线粒体肿胀出现髓样结构,RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达均减弱。2、地高辛作用于晶状体钠泵后,光镜下晶状体细胞水肿、细胞连接破坏、广泛剥离,电镜下胞质见少许半透明空化区、线粒体肿胀嵴消失,RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达均减弱。3、两性霉素B作用于晶状体钠泵后,光镜下晶状体上皮细胞紧密连接、线状排列、纤维板层紧密规整,电镜下细胞器丰富、细胞功能旺盛,RT-PCR法检测α1及α3表达显著增强、具有一定的重整异构作用特异性。4、D甲状腺素作用于晶状体钠泵后,光镜下晶状体质膜完整、细胞排列紧密规整,电镜下胞核见分裂像、细胞间有桥粒、半桥粒及张力微丝,RT-PCR法检测α2及α3表达均增强、亦有一定的重整异构作用特异性。5、维生素E作用于晶状体钠泵后,光镜下晶状体前囊膜连续光滑、上皮细胞紧密连接、纤维板层偶见空化,电镜下囊侧膜内有高电子密度带、细胞核仁丰富,RT-PCR法检测仅有α1的表达显著增强、具有极强的重整异构作用特异性。6、二甲基亚砜作用于晶状体钠泵后,光镜下晶状体前囊膜轻度增厚、细胞连接部分破坏,电镜下质膜变性、线粒体肿胀,RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达无显著改变。

In contrast, the levels of glutamate and alanine decreased, the level of ghitamine increased in the ipsi-lesional MVN, and the level of glutamate decreased in the contra-lesional MVN of rats 2 weeks after infusing 10 mg arsanilic acid into the tympanic cavity to obstruct m-periphery vestibular organ.

结果提示,单侧迷路破坏后双侧MVN区氨基酸含量立即失去平衡,随着前庭代偿的进展,此差异减少,但是在前庭代偿后却出现双侧前庭核区谷氨酰氨的含量失衡,说明在前庭代偿过程中氨基酸含量变化起着重要作用。

This article take the J-7 airplane wing front axle fillet as the object of study through to the front axle fillet breakdown's analysis the diagnosis and received the strength to the front axle connection to carry on the detailed description after its stress situation has made the concrete study proposed the service plan on the front axle fillet's breakdown has carried on the examination to bridge piece's intensity.

参考资料。 17本文以歼七飞机机翼前梁缘条为研究对象,通过对前梁缘条故障的分析、诊断并对前梁的连接和承力进行了详细描述,在其受力情况做出了详细分析后,就前梁缘条的故障提出维修方案,对连接件的强度进行了校核。

General clue of this paper is simulating wood stress field change in initial cutting stage and working out weighted boundary condition of cutting tools first,and then based on which, finding out shear stress and maximal effective stress when wood cut-ted.Meanwhile,finite element comparative analysis is proceeded on distortion and stress field by changing tool orthogonal rake.

本课题的总体思路是通过大型有限元软件ANSYS来模拟切削初始阶段中木材的应力场变化,进而得出刀具受力的边界条件,依此为基础求出木材受切时的剪应力及最大等效应力,同时通过变化刀具前角分别对受切工件的变形及应力场进行有限元比较分析,从而确定刀具的优化前角;优化前角确定后,再通过对刀具进行强度校核确定后角优化值。

Methods:Choose 126 anterior teeth of 112 patients at random,age from 21 to 46, 56 teeth were restored with cement screw post and 70 teeth were restored with glassfiber post,then all cases were restored with porcelain fused metal crown.

随机选取21—46岁的病例112例共126颗前牙进行即刻修复,其中56个牙制作螺纹桩核,70个牙制作纤维桩核,桩核完成后均行烤瓷全冠修复。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。