去饱和

SiC polytypes of 6H and 15R and a transition zone between the two were observed under HREM and TEM and discussed from the point view of the crystal structures; the clear evidence of Al〓C〓 nucleated in the SiC particle was provided, indicating the aluminum penetrating the SiC grains is already carbon-saturated and, consequently, Al〓C〓 crystals grow in the particles wherever a temporary local supersaturating is produced; The experimental observation indicated that the types of the interface between SiC and Al are variable and the distribution feature of reaction product, Al〓C〓, were also given in the present work: to be nucleated on SiC, to be aggregated at SiC/Al interface zone or to be aggregated at the crystal boundaries.

通过高分辨透射电镜，本文观察到SiC增强体中6H和15R同质多晶现象及6H-15R SiC转变区，以及另外一种无序的SiC同质多晶，并从其晶体结构的角度解释了6H和15R在晶体内共存的现象。通过高分辨透射电镜，本文给出了Al〓C〓在SiC颗粒内部形核的明证，表明Al〓C〓形核是Al渗透到SiC颗粒内部在C过饱和处在SiC的（0006）面上而形核，而且一种可能的位相关系为A1〓C〓[11〓0]∥SiC[11〓0]。研究结果同时给出了SiC/Al复合材料的界面反应产物A1〓C〓的分布特征：在SiC上形核并生长，聚集于SiC/Al界面去附近，或者聚集于晶界上。

In this paper, purification of growth hormone receptor from ovine liver and identification of its biochemical character have been done.Firstly, by homogenizing, triturating, high-speed centrifuging, hypervelocity centrifuging and sucrose density grade centrifuging cell membrane of ovine liver was separated and its electron microscope slice wasprotein was disL~olved with TritonX-100,amL-thebinding activity between cell membrane or membrane protein and ~I-hGH using RRAwas measured, perfect saturated curve wasgained. Thirdly, specific binding of GILR protein was measured ,by SDSPAGE, its molecular weight is about 1 19KD.

本研究采取新鲜羯羊肝脏，匀浆、研磨，经高速离心，超速离心和蔗糖密度梯度离心，分离肝脏质膜，得到肝脏质膜的电镜切片：其次，用去垢剂TritonX-100增溶膜蛋白，利用放射受体分析法，测定细胞膜及膜蛋白与~(125)I-hGH的结合活性，均得到理想的饱和曲线；再次，将两点结合试验法与凝胶层析法结合检测到特异结合物，然后，经SDS-PAGE电泳分析，纯化后的样品呈现一条带，与标准分子量比较，得出分子量为119KD。

Firstly, phenyliodine diacetate was immobilized to the 2% cross-linked polystyrene or the liner polystyrene resin. The more iodine the resin had, the lower conversion to phenyliodine diacetate. We made our endeavor to extend the range of useful application of polystyrene supported phenyliodine diacetate in organic synthesis:(1) the reagent was used as an effective reagent of carbonyl regeneration from oximes and semicarbazones of ketones.(2) the reagent was also applied to the synthesis of 1, 3, 4-oxadiazoles, 1, 3-disubstituted-2-pyrazoline, 2-arylbenzoxazole from aldehyde N-acylhydrazones, aldehyde hydoazones and phenolic Schiff's bases respectively.

首先，我们以2％交联的聚苯乙烯和线性的聚苯乙烯树脂为载体，制备了聚合物负载的二醋酸碘苯，通过研究发现：(1)聚苯乙烯二醋酸碘苯是酮肟、缩氨脲有效的去保护试剂，不仅芳香酮，脂肪酮和α，β不饱和酮的肟、缩氨脲也能顺利转化为相应的酮，实现酮基的再生；(2)我们还利用此试剂，分别与醛的N-酰基苯、N-酰基苯腙及邻羟基芳亚胺反应，在温和的条件下发生成环反应，以良好的产率生成1，3，4-噁二唑、吡唑啉和二取代苯并噁唑等杂环化合物；(3)聚苯乙烯二醋酸碘苯还可有效地将邻羟基芳酮的酰腙经氧化、重排成1，2-二酰基苯。

Designers will not spare any effort; they will use their turbo-charged Macs to prove that in today's over-saturated market, they have carte-blanche to attract the attention of consumers.

设计者将不遗余力，他们将利用他们超强的苹果计算机去证明，在今天的过度饱和的市场，他们仍然有能力吸引消费者的注意。

Designers will not spare any effort; they will use their turbo-charged Macs to prove that in today's over-saturated market, they have carte-blanche to attract the attention of consumers.

设计者将不遗余力标志设计设计，他们将利用他们超强的苹果计算机去证明vi标志设计，在今天的过度饱和的市场，他们仍然有能力吸引消费者的注意。

Designers will not spare any effort; they will use their turbo-charged Macs to prove that in todays over-saturated market, they have carte-blanche to attract the attention of consumers.

设计者将不遗余力，他们将利用他们超强的苹果计算机去证明，在今天的过度饱和的市场，他们仍然有能力吸引消费者的注意。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐