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A novel method of preparing micropore activated carbons from tobacco stems impregnated with zinc chloride by microwave heating was studied.

研究了微波加热烟杆氯化锌活化法制备微孔活性炭的新工艺。

The methods and process of preparing zirconium phosphate compounds were reported.

磷酸锆类化合物是近年发展的一类新型多功能材料，在催化领域有广泛应用。

Lots of new production technologies to enhance the competitive power of products have worked out in China's companies such as technologies for producing vitamin C manufactured via two-step zymosis; synthesizing chemically vitamin E with the domestically produced key intermediates linalool, isophytol and trimethylphenol; preparing vitamin B2 gained by genetically engineered bacterium fermentation, and commercialized production of vitamin H, etc.

我国企业研究出许多维生素生产新工艺，提高了产品的竞争力，开发的新工艺有两步发酵法生产维生素C，化学合成维生素E的关键中间体芳樟醇、异植物醇和三甲基苯酚等原料国产化，基因工程菌发酵生产维生素B2，维生素H的工业合成等。

The invention discloses a process for preparing N-Boc derivative or N-Cbz derivative of chiral alpha, alpha'-double substituent pyrrolidine which contains ethylenic link and acetylenic link substituent.

本发明公开了一种制备含烯键和炔键取代基的手性α，α'-二取代吡咯烷的N-Boc衍生物或N-Cbz衍生物的方法。

The best method and condition of preparing barium ferrite nano-particles with hexagonal flake and with acicular were discussed.

然后对这两种样品进行了电磁参数和反射率的测试。

Her oldest son, Cash, puts all of his carpentry skills into preparing her coffin, which he builds right in front of Addie's bedroom window.

她的大儿子，现金，让他所有的木工技能准备她的棺材，他建立在眼前员的卧室窗口。

40C. Further ,the effects of ratio of aggerate to bond, aggregate size, bond density and Al/p on the coating wear-resistance property were described in preparing metallic-matric ceramic coating.

研究得出：当结合剂的Al/P为1.4：3、密度为1.63g/cm~3时，向其中加入粗颗粒含量为40%的陶瓷骨料，于A_3钢基体上制备出了耐磨性能优于金属基体的陶瓷涂层。

This paper aims at preparing biodegradable aliphatic block copolymers with combined mechanical and thermal properties with reduced cost.

本文旨在制备低成本且力学性能和热性能俱佳的可生物降解脂肪族嵌段共聚物。

During the course of our recent investigation on a new generation of dihydroxylation catalysts,we had had the pleasure of preparing DMAP-derived benzylic alcohol 1 and desired to use its sodium alkoxide ion for an intended nucleophilic substitution event.

在我们对催化剂的羟化新一代最近的调查过程中，我们不得不编写DMAP的乐趣衍生苄醇1和期望使用的预定活动的亲核取代醇钠离子。

The invention concerns a process for preparing heterocyclic carbenes of general formula in which R1, R2, R3 and R4 are identical or different and mean saturated or unsaturated, straight-chain, branched or cyclic, unsubstituted or substituted C1-C10 alkyl, C2-C5 alkylidene, C2-C5 alkylidine, C7-C19 aralkyl or C6-C14 alkyl groups, R3 and R4 can also stand for hydrogen or form jointly anellated, substituted or unsubstituted groups with between 3 and 7 carbon atoms and X stands for carbon or nitrogen, R3 being dropped if X is nitrogen.

本发明涉及一种制备通式Ⅰ的杂环碳烯的方法，其中在通式Ⅰ中，R1、R2、R3和R4是相同的或不同的，并且是饱和的或不饱和的，直链、支链或环状的，未取代或取代的C1－C10－烷基、C2－C5－亚烷基、C2－C5－次烷基、C7－C19－芳烷基或C6－C14－芳基基团，R3和R4可以是氢或它们一起形成具有3－7个碳原子的稠合的、取代或未取代的基团，X是碳或氮，并且当X是氮时，不存在R3。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。