去饱和的

Nucleophilic opening of the terminalepoxide 57 by a lithium acetylide from 27 in the presence of BF3·EtO furnishedcompound 58, which had the skeleton of target molecule, subsequent conversionsinvolved the introduction of γlactone gave Annonacin.

然后以三氟化硼参与的炔负离子开环氧反应建立分子骨架，得到化合物58。随后经氢化，引入α，β不饱和丁内酯环、去保护等几步反应，就得到Annonacin。

The significant improvement might be caused by the Cu substrate which has higher thermal conductivity than conventional Sapphire substrate. However, Cu substrate is a ductile metal plate and easy to deform during the processing. The deformation of the Cu substrate will destroy the LEDs that were bonded on the Cu substrate. Finally, LEDs will be fabricated on the patterned Cu/Si substrate to make high-power LEDs and solve the deformation problem in processing.

主要是因为利用铜基材去取代蓝宝石基板使其具有较高的散热性，可以使元件在较高的饱和电流下驱动以达到高功率的目标，然而，铜金属是延展性佳的材料，因此，在整个元件的制做过程中，易造成发光二极体元件毁坏，利用本实验的方法可以提升制造高功率发光二极体之良率。

The adsorptive effect of chitosan on acidic dye follows a sigmoidal trend. The chitosan-woven fabric after 98% de-acetylation achieved 98% and 95% dye adsorption in reactive dyes; and achieved 93% and 92% dye adsorption in reactive dyes in eight days. The higher the degree of de-acetylation, the better the dye adsorption.

使用去乙醯化98%的几丁聚醣含浸织物吸附材，在经过8天的饱和吸附后，对於种反应性染之吸附效果可达到98%和95%；且对於种酸性染之吸附效果也可达到93%和92%，由此可知去乙醯化程越高，对染的吸附效果越好。

METHODS: Bone of limbs were obtained under sterile condition, washed by PBS, centrifugalization, and dropwise into centrifuge tube containing 1.073 g/mL Percoll separating medium, centrifugalization, and then adding L-DMEM containing 10% fetal bovine serum, benzylpenicillin sodium and phytomycin, cultured in a incubator at 37 ℃ with 5% saturated humidity. The culture medium was renewed after 48 hours, and non-adhesive cells were removed.

无菌条件下截取流产胎儿双侧四肢骨，PBS冲洗髓腔，离心去脂肪及上清液，L-DMEM重悬细胞，沿管壁缓慢滴加至底部有等量1.073 g/mL Percoll分离液的离心管中，离心后吸取中间界面白膜层，加入含体积分数为10%的胎牛血清、青霉素钠、链霉素的L-DMEM完全培养基，接种后置于37 ℃、体积分数为5%的CO2饱和湿度孵箱内培养。48 h后换液，去除未贴壁细胞，以后每2 d换液一次。

The puerperant and her relatives all signed informed consents. METHODS: Bone of limbs were obtained under sterile condition, washed by PBS, centrifugalization, and dropwise into centrifuge tube containing 1.073 g/mL Percoll separating medium, centrifugalization, and then adding L-DMEM containing 10% fetal bovine serum, benzylpenicillin sodium and phytomycin, cultured in a incubator at 37 ℃ with 5% saturated humidity.

无菌条件下截取流产胎儿双侧四肢骨，PBS冲洗髓腔，离心去脂肪及上清液，L-DMEM重悬细胞，沿管壁缓慢滴加至底部有等量1.073 g/mL Percoll分离液的离心管中，离心后吸取中间界面白膜层，加入含体积分数为10%的胎牛血清、青霉素钠、链霉素的L-DMEM完全培养基，接种后置于37 ℃、体积分数为5%的CO2饱和湿度孵箱内培养。48 h后换液，去除未贴壁细胞，以后每2 d换液一次。

The invention relates to a processing method of preventing frostbite and restarting of hydrogen electric pile, whose characteristic lies in the treating processes includes: When the electric pile turns off, the unsaturated fuel gas or the nitrogen, through the circle boast to clean the dissociate water; drying the MEA film module to keep the water content below the stipulated temperature which does not ice up; then the recycle gas through a wet exchanger to dry and the dried gas is continue used in the dry pile step; when restarting the electric pile, the recycle gas must heats then through the pile to elevate the temperature, then heats the fuel gas and the oxidant of the gas source, through the weting of the wet exchanger enters to the calefactive pile, enhances the wet step of the film module in the pile, starts the power output of the pile.

本发明涉及一种氢电堆的防冻和重新启动时的处理方法，其特征在于处理过程包括：电堆停机时，将水蒸气不饱和的燃料气体或氮气，通过循环吹扫除去电堆的游离水；干燥其中的MEA膜组件，使膜组件含水量降低到规定低温下不结冰的程度；而后再令循环气体通过一个湿交换机将循环气体干燥，以及被干燥后的循环气体继续用来干燥电堆的步骤；在电堆重新启动时，须将循环气体加热后通过电堆，使电堆升温，然后再将气源的燃料气及氧化剂加热，通过湿交换机加湿后进入已升温的电堆，提高电堆中膜组件的湿度的步骤，开始电堆的功率输出。

Two patients in group PR requiredanesthesiologist intervention for arterial desaturation exceedingthe primary safety end point.

PR 组的两名病人需要麻醉医师的介入，患者的动脉去氧饱和超过了安全限。

Chiral centers of C5 and C8 are directly constructed in the key step of the diastereoselective propargylation from D--tartrate. The methylation and subsequent methoxycarbonylation result in desymmetrization of the terminal dialkynes. The α,β-unsaturated δ-lactone is synthesized after partial hydrogenation and lactonization.

由非天然酒石酸出发，利用双向非对映选择性的炔丙基化反应，在一步反应中同时构建C5和C8手性中心；然后通过末端炔基的甲基化、甲酯基化，延长碳链并对分子去对称化；内酯化得到关键中间体α，β-不饱和六元内酯，再经多步反应转化得到8-epi--Boronolide。

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。

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