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Cellulose acetate butyrate with high or low degree of butyryl substitution was synthesized in heterogeneous system(butyric acid/ acetic acid/ butyric anhydride/ sulfuric acid) using the "free solvent" method. The effect of activation time, esterification time, the molecular weight of cellulose and the content of the organic acid or anhydride on the degree of acetyl and butyryl substitution of cellulose was discussed.

在非均相体系中进行酯化反应，采用&反应性溶剂&，以硫酸作为催化剂合成出从高丁酯含量到低丁酯含量的纤维素醋酸丁酸酯，研究有机酸以及酸酐的添加量、活化时间、酯化反应时间以及原料纤维素的分子量对酯化产物纤维素醋酸丁酸酯的影响。

This paper studied a new calorimetry system of data transferring,processing and controlling,which based on the PCI bus.

研究了一种基于PCI总线数据传输、处理、控制的新型量热仪系统，给出了详细的系统控制方案，介绍了PCI总线接口芯片PCI9052在ISA模式下的相关硬件设计、寄存器配置以及驱动程序模块设计思路。

Particularly,the CP content of H.compressa from Caoba is 3.0% higher than that of H.compressa cv.Chonggao.Therefore,there is a promising for H.compressa from Caoba to offer an alternative to be a new variety.By the clustering analysis,all native accessions are classified into four different types,which is helpful to choose and utilize further.

经测定，大邑生态型扁穗牛鞭草和草坝生态型扁穗牛鞭草表现出植株高大、茎粗壮、叶量丰富、干物质含量高等许多牧用性饲草的优良特点，特别是草坝生态型扁穗牛鞭草的粗蛋白质含量比重高牛鞭草高约3.0%，所以，它有望成为优良的扁穗牛鞭草新品种。

In group A ,21. 07 %in group B and 8 cases in group C;4. treatment of chronic rejec2tion :after administration of Bailing capsula ,24 h urinary protein of CR in groups A and B was less than that in group C ,andScr also fell.

5 % ，B 组21。 07 %，C 组25 %；(3)白细胞下降：A 组无，B 组12 例，C 组8例；(4)慢性排斥的治疗情况：A、B 组之CR 在使用人工冬虫夏草胶囊后，尿中24 h 蛋白排出量较C 组减少或显著减少，血清肌酐明显回落。

We discuss the general from of IBM2 hamitltonian. We give the complete set of Casimir operators ?

3、(6)极限。我们在第四章中讨论了IBM2的哈密顿量的一般形式，给出了IBM2的Casimir算子的完备集。

In the paper, some factors influencing the effect of reduction including the anodic material, the cathodal material, the area ratio of cathode to anode and the kind of electrolyte have been investigated and screened out. The result showed that under the same reduction conditions, the reduction of Cr6+ has better effect to use lead-antimony alloy as anode, iron plate as cathode, which area ratio is 7:1 and potassium sulphate as electrolyte.

本文首先对影响电解还原效果的阳极材料、阴极材料、阴阳极面积比和支持电解质加入的种类等因素进行了研究筛选，结果表明：在同样电解还原条件下，实验中阳极采用铅-锑合金，阴极采用铁板，阴阳极面积比取7∶1，支持电解质取为硫酸钾时，具有较好的Cr~(6+)还原效果；同时在采用铅-锑合金作阳极的条件下，通过正交实验，对影响直接在碱性介质中电解还原低浓度含铬废水的其他因素进行了研究，即研究了在电化学还原过程中，Cr~(6+)的初始浓度、极板间距、支持电解质的加入量、搅拌情况等因素对还原效果的影响程度，确定出了主要的影响因素。

Important advance was made to Celastrus and ceangulin V after 20 years studies, but the target of Celangulin V was not verified and the metabolic dynamic of Celangulin V in organism was not touched because of the technique difficulty in testing and analysis of trace Celangulin V in organism. It will solve the difficulty that establishing the immunoassay of Celangulin V. The immunoassay of Celangulin V including the synthesis of artificial antigen, the preparation of antiserum, the immunoanalysis location of Celangulin V and the quantitative immunoassay of Celangulin V were studied systematicly in this paper.

苦皮藤素V是从卫矛科植物苦皮藤中分离出的一种具有杀虫活性的天然产物，可能作用于一类新的作用靶标。20多年对苦皮藤及苦皮藤素V的研究已取得了重要进展，但迄今还没有证实苦皮藤素V的作用靶标，对苦皮藤素V在生物体内的药代动力学研究也尚未涉及，这些方面的研究因为对痕量苦皮藤素V在生物体内分析、检测存在技术方法上的困难而受到限制，建立苦皮藤素V的免疫分析技术则可解决这些问题。

Important advance was made to Celastrus and ceangulin V after 20 years studies, but the target of Celangulin V was not verified and the metabolic dynamic of Celangulin V in organism was not touched because of the technique difficulty in testing and analysis of trace Celangulin V in organism. It will solve the difficulty that establishing the immunoassay of Celangulin V. The immunoassay of Celangulin V including the synthesis of artificial antigen, the preparation of antiserum, the immunoanalysis location of Celangulin V and the quantitative immunoassay of C'elangulin V were studied systematicly in this paper.

苦皮藤素Ⅴ是从卫矛科植物苦皮藤中分离出的一种具有杀虫活性的天然产物，可能作用于一类新的作用靶标。20多年对苦皮藤及苦皮藤素Ⅴ的研究已取得了重要进展，但迄今还没有证实苦皮藤素Ⅴ的作用靶标，对苦皮藤素Ⅴ在生物体内的药代动力学研究也尚未涉及，这些方面的研究因为对痕量苦皮藤素Ⅴ在生物体内分析、检测存在技术方法上的困难而受到限制，建立苦皮藤素Ⅴ的免疫分析技术则可解决这些问题。

Under the condition of small strain, anisotropy is shown; however, the anisotropy degree decreases with the increase of shear strain, and the approximately isotropy is got. At the same time, the effect of stress path circumgyration on shear modulus decreases gradually along with the increase of shear strain.

在小应变条件下，土体表现出各向异性，但随剪切应变的增加而逐渐减小，最终表示为近似各向同性；同时由应力路径旋转对模量的影响也随着剪切应变的增加而逐渐衰减。

The computational complexity has been reduced about 5 times over against the original one. Moreover, the interpolation and quantization processing of CW is more reasonable; 2. A secondary power normalization algorithm is proposed in this dissertation. This normalization algorithm ensures that the energy sum of SEW and REW is 1. So, the energy ratio of SEW and REW can be achieved only by using SEW energy. This ratio is applied in REW quantization and CW composition; 3. For more efficient quantization for Slowly Evolving Waveform magnitude, Rapidly Evolving Waveform magnitude and power parameters, firstly, by applying the Equivalent Rectangular Bandwidth theory, classifiable multi-codebooks method, analysis-by-synthesis approach and so on, a predictive AbS multi-codebooks SEW magnitude quantization scheme is proposed. In the scheme, pitch information is exploited to determine which codebook is searched; secondly, for REW magnitude quantization, this dissertation proposed a DCT-matrix multi-codebooks quantization scheme. The classification in muti-codebooks is based on pitch and quantized SEW power. The multi-codebooks structure may offer more the information in quantization and solve the problem of the bit requirement limits in quantization by consuming some extra storage space; Furthermore, for the switch quantization of CW gain, a new classified parameter is proposed.

本文的主要贡献体现为如下几方面：一、为了减少WI模型的计算复杂度，提出了基于快速傅立叶变换、三次B样条插值和周期延拓技术的特征波形(Characteristic Waveform，CW)表示和对齐的快速算法，与原方法相比，计算量下降到原方法的1/5，同时也使得CW在插值和量化时更合理；二、为了严格保证SEW与REW的能量和为1，提出了一种特征波形的二次功率归一化算法，仅需要SEW能量就可以算出二者的能量比，并可应用到后续的REW的分类量化和CW合成中；三、为了对慢渐变波形(Slowly Evolving Waveform，SEW)幅度、快渐变波形(Rapidly Evolving Waveform，REW)幅度和特征波形功率进行有效量化，本文首先采用临界频带理论、分析合成技术、感觉加权技术以及预测式矢量量化技术，提出了一种基于基音周期分类的SEW分析合成预测式多码书量化方法；其次，本文根据基音和量化后SEW的功率信息对REW幅度进行分类，提出了一种基于离散余弦变换的REW矩阵多码书量化方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。