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The direct incorporation of U-13C glucose was estimated by the intensity increase of m/z to F(F was parent fragment, and n was the carbon number in the fragment), while the total isotope incorporation from the added 13C could be calculated according to the abundance ratio increment summation from m/z (Fa+1) through (Fa was the fragment containing all original skeleton carbons, and T was the carbon number in the amino acid molecule). The 13C enrichment in the target compound was expressed as atom percentage excess, and that of D-amino acid needed to be corrected by the coefficient of hydrolysis-induced racemization. The 13C enrichment reflected the carbon turnover velocity of individual amino acid enantiomers, and was powerful to investigate the dynamics of soil amino acids.

外加葡萄糖直接合成氨基酸的比例可利用质谱碎片的相对强度变化来评价(n为质谱碎片F中含有的碳原子数目);而源于葡萄糖的13C同位素在氨基酸分子中的富集程度是所有同位素峰相对强度变化的总和。13C在目标化合物中的富集比例用原子百分超评价,D氨-基酸的APE还需进一步利用水解诱导的外消旋化系数校正。13C在目标化合物中的富集程度可反映各氨基酸手性异构体的碳循环速率大小,是研究土壤氨基酸动态变化的有力工具。

The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5~6倍的平均粒径,首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性,发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化,通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分,观测到接触面受剪时表现出明显的相对法向位移,并可分解为可逆性和不可逆性两个分量;(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型,并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性;(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析,比较了不同接触面本构模型对计算结果的影响,证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性,还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

With respect to syntax, the roles of tagmeme in the structure of word and sentence and Chomsky's Generative-Transformational Grammar are discussed. The spatial relation theory and existing research achievements are investigated. Having noticed the shortage of the capability of topological and metrical relation in the description of spatial information structure, the author proposes Combinational Qualitative Geometry based on the two invariables under ordinary transformations, distance ratio and direction difference, the CQG-based spatial relation system between topological and metrical constraint is thus constructed, on which several spatial relations such as parallel, perpendicularity, co-linearity, sequence and direct neighborhood are derived. Based on extended theory of spatial relation, the language anamorphosis is analyzed from the aspects of phonetics, semantics and syntax. The mere geometric and formalized spatial relation is then integrated with concrete geographic ontology to accommodate richer and indicative spatial configuration of spatial information in the different geographic context. Finally a syntax framework for spatial information is put forward.

在语法结构方面,首先阐述了法位和法素在语法结构词法和句法中的地位和作用,以及Chomsky生成转换语法的核心内容;详细介绍了地理信息系统空间关系理论及现有的研究成果;在分析现有的拓扑关系和量度关系对空间信息结构描述能力不足的基础上,提出了基于长度比和角度差两个不变量的组合定性几何,以此建立了介于拓扑及量度约束之间的组合定性关系体系,并以此为基础派生出平行、垂直、共线、次序、直接邻近等空间关系描述;本文基于扩展的空间关系理论,详细讨论了空间关系在语音、语法和语义三个方面的语言变体,将纯几何和纯形式化的空间关系与具体的地理本体结合起来,可以获得更为丰富的、更能反映空间关系在不同语言上下文中具体体现的组合关系;最后给出了一个空间信息的语法结构的基本框架。

This chapter is divided into three sections, section I, for the analysis of "Lao Zi" annotator in Qing Dynasty in the impact of three religions, it was agreed that "eliminate emotion and regress to humanity" idea. Section II to illustrate mainly the traditional "Lao Zi" annotation in Qing Dynasty, the impact in Western countries began to accept the idea of Western Ideas, output the first "Lao Zi" annotation base on Western Ideas –Yan Fu "Ping Dian Lao Zi"; Section III of "freedom, democracy, equality", to discuss Yan Fu think "Lao Zi" already have many of the modern social values:"free","equality","teamwork".

本章共分为三节,第一节为「复性化情」,析论清代《老子》注家在三教思想的濡染下,一致提出「复性化情」的主张,作为体道、得道的路径;第二节为「会通之道」,说明以传统守成态度为主的清代《老子》注,在西方国家的冲击下,开始接纳西学的理念,开出了第一本以西学解老的著作──严复《评点老子》,此书反映了他中西学术兼容并蓄的思想,他不仅融合儒、释、道的概念,更将西方的科学、哲学纳入《老子》的思考当中;第三节为「自由、民主、平等」,旨在讨论严复认为老子书中已经具备许多近现代的社会价值:「自由」、「平等」「合群」的概念。

The delay time of vertical coseismic deformation have positive linear relationship with ep...

断层体垂直向同震形变延迟时间与震中距线性正相关,发生地震同震形变的响应速度约为5.5km/s,反映了在上层花岗岩地层中面波的传播速度;同震位移最大振幅和震中距的对数、震级之间具有明显线性关系,震级越大,同震位移的最大振幅越大;地震震级是断层体垂直同震形变振动持续时间的主要影响因素,震级越大,同震形变振动持续时间越长。

Based on the study of the types and calculation of the component characteristics of the fluid inclusion in quartz, it is found that the ore-forming temperature of gold deposit is mainly at the two temperature zone: 170~220℃ and 230~300℃. The result shows that this deposit belongs to mesothermal type. The mineralization pressure is 51.12~72.6 MPa, and the mineralization depth is 1.7~2.4 km, which reflecting the mineralization characteristic of middle-shallow layer.

通过对其石英流体包裹体类型、包裹体的成分特征的研究及计算,得出金矿床成矿温度主要在170~220℃和230~300℃这两个区间,应属中温热液矿床;成矿压力为51.12~72.6MPa;成矿深度为1.7~2.4km,反映了中浅成的成矿特征。

However, relating to investigate the modes, courses and characteristics of the orogenetic process in Paleozoic and after orogenetic process, the cognitive divergence have still occurred.

通过对新疆北东部地区不同构造区带构造作用的方式、过程和特点的研究,确定:①南天山榆树沟高压麻粒岩地体的正变质原岩是一个基本完整的蛇绿岩套,其经历了俯冲至下地壳的高压麻粒岩相、构造抬升至深地壳麻粒岩相以及快速构造折返至角闪岩相的变质过程,代表了南天山洋壳俯冲、变质、随后折返的过程,并首次确定了变质过程的PTt轨迹;②奥陶纪末期中天山北缘发生洋盆俯冲、地体增生作用,此时萨日达拉地区处于岛弧活动带;中石炭世晚期中天山小型洋盆关闭,准噶尔地块与伊犁—中天山板块斜向对接随后发生脆韧性质近水平高温低速右行走滑剪切;③根据巴音沟地区不构成蛇绿岩套有效成分的硅质岩具有与活动大陆边缘密切相关的地球化学特征以及洋中脊玄武岩显示其岩浆源区受到消减带流体交代作用的影响,结合区域地质资料,首次提出巴音沟蛇绿岩带所代表的洋盆古构造环境为弧后盆地,并于早石炭世至中石炭世末期间,经历了扩张、收缩和闭合过程;④首次在克拉麦里蛇绿混杂岩带中分解出具有N-MORB、T-MORB与OIB三种不同类型的火山岩岩石组合,反映了洋盆俯冲

Purpose: To explore the valid index to access female heavy events athletes' body composition, fat percentage.

研究目的:通过测定女子重竞技运动员的体脂率fat%,BMI和标准体重指数,并对三种测定结果进行相关分析,寻求反映女子重竞技运动员体成分的可靠指标。

The similarity shows their affinity, and the differences reflect the attributes of partial melting relicts of inclusions.

相似性表明了它们的亲缘关系,差异性反映了包体部分熔融残余体的属性。

There is high precision in the model experiment of sloping plate and the RTP field errors are less than 0.001 nT. In the model experiments of single and multi-sphere, we can obtain the better RTP results using the DCT method when the magnetic dip is 5°, and the results are excellent when the dip is 15°.The shape of contour line, the maximum and the plane location of magnetic model are all good comparing with the theoretical anomalies when the model is perpendicular magnetization.

在倾斜板状体模型实验中,化磁极误差小于0.001 nT,具有较高的精度;在单球体及多球体模型实验中,采用基于DCT的化磁极方法在5°倾斜磁化时就可以取得较好的化磁极结果,15°时化磁极的效果更加明显,其等值线的形态、幅值以及所反映的磁性体的水平位置都得到较好的恢复;这说明,采用本文方法进行化磁极时,可以取得较好的效果。

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推荐网络例句

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码,我就打电话给她了。

I'll have to take this dress in at the waist - it's too big.

我得把这件连衣裙的腰身改瘦---太大了。