四重

Now we study the properties of four multi-layer potentials and their high deriva-tives of biharmonic equation in the plane when they approach the boundary of adomain.

我们研究了重调和方程四种多层位势及其高阶微商在边界附近的性质，得到了这些微商新的表达式，从而将重调和方程的自由边值问题归化为新的边界积分-微分方程组。

The string quartet is that the instrument being that two is composed of the violin , a handful viola and a handful cello from four pieces of stringed instruments performs combination , their tone colour both unite and be rich in change, be expert in weave the body and refined exquisite lingering charm, four pieces of instruments have and the expressive power big and powerful equally , accord with thought of four west music middle parts habit at the same time, this combination becomes chamber music therefore, being hit by the have most typical ensemble of two or more instrumentalists , each playing one part form, Also become a composer express music thought having imitates a means deep and individuation most .

弦乐四重奏则是由四件弦乐器——两把小提琴、一把中提琴和一把大提琴——组成的乐器演奏组合，它们的音色既统一又富于变化，以细腻的织体和精妙的韵味见长，而且四件乐器均具有强大的表现力，同时又符合西方音乐中四个声部的思维习惯，因此，这种组合成为室内乐中最具代表性的重奏形式，也成为作曲家表达最深刻和最个性化音乐思想的有效手段。文章分析室内乐与弦乐四重奏的基本内容及关系，讨论弦乐四重奏的发展概况，最后探讨了弦乐四重奏的"民族化"及未来发展趋势。

Herein, we report the enantioselective total syntheses of slagenins A-C and their antipodes. Starting from readily available ethyl -4-chloro-3-hydroxy-butanonate, elongation of the carbon chain with diazomethane, followed by oxidation of the given α-diazoketone using distilled DMD, afforded a key intermediate α-ketoaldehyde .

本文从方便易得的-4-氯-3-羟基-丁酸乙酯出发，经重氮甲烷延伸碳连、DMD氧化相应的α-重氮酮，制得α-酮醛；该化合物与尿素在氢氟酸作用下，以协同方式非对映选择性的直接构建了cis-四氢呋喃并[2，3-d]咪唑啉-2-酮双环结构，进而合成了天然产物slagenins A、B、和C的对映体。

Chapter two: Using 5-(4-aminophenyl)-10,15,20-triphenylporphyrin as thestarting compound, the classical diazotization of aniline and the resulting reaction ofdiazo salts were applied to porphyrin for the first time, and a series of asymmetriclysubstituted meso-tetraarylporphyrins including 5-(4-chlorophenyl)-10,15,20-triphenylporphyrin, 5-(4-iodinphenyl)-10,15,20-triphenylporphyrin, 5-(4-cyanophenyl)-10,15,20-triphenylporphyrin, 5-(4-bisphenyl)-10,15,20-triphenylporphyrin and 5-(4-hydroxylphenyl)-10,15,20-triphenylporphyrin were synthesized.

第二章：在已合成的5-(4-氨基苯基)-10，15，20-三苯基卟啉基础上，首次将芳胺的重氮化及重氮盐反应应用于卟啉，合成了5-(4-氯苯基)-10，15，20-三苯基卟啉、5-(4-碘基苯基)-10，15，20-三苯基卟啉、5-(4-氰基苯基)-10，15，20-三苯基卟啉、5-(4-联苯基)-10，15，20-三苯基卟啉和5-(4-羟基苯基)-10，15，20-三苯基卟啉等一系列不对称取代的meso-四芳基卟啉。

In Chapter 4we make more study about the properties of the multifractal Hausdorff mea-sure.The existence of finite measure subsets and the Frostman theorem areproved in this chapter.

第四章我们进一步讨论重分形Hausdorff测度的性质，证明了关于重分形Hausdorff测度的有限测度子集的存在性及Frostman定理。

While it is randomly grabbing around with rage, the dragon god flits to the proximity of its feet and inserts four inverse claws into the skin of it (there are three straight claws and one inverse claw to form a whole dragon claw).

天魔出招越来越是混乱急躁，雷鞭如雨般向龙神击去，但龙神在其中滑溜地穿梭，很快又一爪抓瞎了它好几只眼，然后一尾打在它另外几只眼上，趁它愤怒乱抓之时，飞到了它足部附近，将四支倒爪刺入天魔外皮(每只龙爪有三支正爪一支倒爪)，然后一边绕著它飞，一边往上升，於是天魔身上就被抓出四道螺旋状的深深爪痕，等飞到天魔头部，龙神放开四爪，随著一声长啸往九天之上翔去，瞬时天魔头顶就出现一个直通九天的大洞，从洞中吹下的虚空旋风将天魔皮肉从爪痕处撕裂，重归暗云，从天空落下

The leaf mass per unit area decrease gradually with the light regimes bringing down. The leaf of Fatsia japonica changes obviously, the other three species change obviously neither under 24%daylight or 6%daylight, but under 58%daylight dose.

四种植物的比叶重均随光照强度的减弱而减小，八角金盘的比叶重变化显著，其它三种植物的比叶重在24％自然光强下和6％自然光强下变化均不显著，但同58％自然光强下的比叶重相比，变化较显著。

The first part is literature review of relevant Customer Value Theory. In the following part, research questionnaires about customer value in health and fitness entertaining and straight rebuy tendency are designed concerning to existing survey methods and combined with the status quo and features of health and fitness entertaining enterprises. The third part is surveys and analysis about the status quo of custom value in bodybuilding clubs in Nanjing. Six common factors, named as "sentimental value","consumption cost","product value","service value","expected value", and "function value", are concluded as the elements of customer value in health and fitness entertaining after factor analysis and are discussed in the fourth part. In the fifth part, influences of the various elements of customer value on customers' straight rebuy are obtained by Logistic regression analysis. The sixth part is about the relationship between customer individual attribute and customer straight rebuy reached through partial correlation analysis.

首先，梳理了顾客价值理论和体育健身俱乐部相关研究的文献；其次，以顾客价值已有的探测方法，结合商业性健身俱乐部的现状及特点，设计出商业性健身俱乐部顾客感知价值及重购意向的调查问卷；第三，对南京市健身俱乐部顾客价值现状进行了调查和分析；第四，通过因子分析得出商业性健身俱乐部顾客价值构成要素结构，共有六个公共因子，命名为&情感价值&、&消费成本&、&产品价值&、&服务价值&、&期望价值&、&功能价值&；第五，通过Logistic回归分析，得出健身俱乐部顾客价值构成要素对顾客重购行为的影响；第六，通过偏相关分析得出健身俱乐部顾客个体属性与顾客重购行为的关系。

The experimental diet with glutamine (10 g/kg), or with lactitol (3 g/kg), or with tributyrin (5 g/kg), or with lactitol (3 g/kg) plus tributyrin (5 g/kg), the aim is to determined effects of several several substances and compound on early weaned piglets.

整个试验分为以下四个部分： 1 几种物质对早期断奶仔猪生长性能的影响在断奶当天、断奶后7天、14天、21天及28天分别对仔猪进行称重，观测猪只的平均日增重、日采食量、料重比及腹泻率。

This paper conducts the computation classification for the spring flood and drought situation in He Zhou by using the spring precipitation data in four weather stations of He Zhou during 1965-2004,and the z index,and the index of regional flood and drought .

利用贺州市四站1965~2004年春季降水资料，运用z指数和区域旱涝指数对贺州地区春季旱涝情况进行计算分类，并对重旱涝典型年份500hPa环流特征量和4月平均环流场展开分析，发现：贺州地区春季极易发生局部旱涝灾情，90年代以来重旱涝年份出现频率明显增大；在重旱年副高强度强，西伸脊点明显偏西，南支槽偏西偏弱，极涡中心偏东，亚洲中高纬高度偏低，在重涝年则相反。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。