查询词典 formate

CO is used to produce formate,formic acid and oxalic acid by reacting with alkaline,in which the CO usually from coal vaporization is replaced by the CO from tail gas of yellow phosphorus production,by-reaction between thermal phosphoric acid and formate or oxalate to produce formic acid or oxalic acid,and by product dihydric phosphates.

提出用生产黄磷尾气中的CO与碱反应生产甲酸盐甲酸草酸，或利用热法磷酸和甲草酸盐反应生产甲酸草酸并副产磷酸二氢盐，继续加工可制得磷酸盐系列和碳一化工系列产品分析该磷化-碳一化工产业在节能减排降低投资与生产成本方面的优势，并简述了黄磷尾气杂质对产品质量的影响及尾气的净化方法

The levels of all identified metabolites are notably higher at day 11 and day 14. At day 21, the amounts of Asn and His were decreased, but Val, lactate, Ala, malate, succinate, GABA, choline,β-glucose, fructose, allantoid, Phe and formate were all increased. Enteric bacteria must overcome the acid environments in host organs to colonize the host.

结果表明：根瘤菌处理5d后苹果酸含量显著增加，7d时丙氨酸浓度降低而异亮氨酸、苹果酸、琥珀酸、GABA、胆碱、磷酸胆碱、β-葡萄糖、延胡索酸、组氨酸、苯丙氨酸、色氨酸含量显著增加。11d和14d的差别极为显著，所有已鉴定代谢物的含量都大大增高。

Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用"一勺烩"方法，以4-羟基苯甲腈为起始原料，首先与硫氢化钠和无水氯化镁在N，N-二甲基甲酰胺中反应，所得中间体不经分离，直接加入2-氯乙酰乙酸乙酯进行环合反应，得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（2）；然后通过六亚甲基四胺/三氟乙酸进行Duff反应，得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（3）；再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

Practice shows: The boric acid ester as resisting additive, its greatest advantage is safe and easy to formate.

在国外，各种各样的硼酸酯作为新型的抗磨添加剂得到了广泛的研究。

Calcium caseinate calcium formate calling card calvin klein camcorder accessory cameras camlet sock camping light "There are only two creatures," says a proverb,"who can surmount the pyramids—the eagle and the snail."

俗话说："能登上金字塔的生物，只有两种——鹰和蜗牛。"

Perseverance can sometimes equal genius in its results.calcium caseinate calcium formate calling card calvin klein camcorder accessory camera cameras camlet sock camlet socks camping light "There are only two creatures," says a proverb,"who can surmount the pyramids—the eagle and the snail."

俗话说："能登上金字塔的生物，只有两种——鹰和蜗牛。"

Methyl formate becomes more and more important as a new source of carbon in the carbonyl synthesis.

甲酸甲酯作为新的碳源，在羰基合成化学中的作用越来越受到重视。

Methanol can be further processed to hundreds of organic products, such as formaldehyde, MTBE, acetic acid, sodium methoxide, chloromethane , methyl formate, formamide, 2-methyl formamide etc., the demand for those will be expand in future:① in 2000, the production of formaldehyde is 2,068,000 tons, along with our country continue reinforce the infrastructure, the consumption of formaldehyde will increase rapidly.

甲醇可深加工的有机化工产品有上百种，如甲醛、 MTBE、醋酸、甲醇钠、氯甲烷、甲酸甲酯、甲酰胺、二甲基甲酰胺等等，预计这方面的需求今后会有适度发展：① 2000年我国甲醛产量达206.8万吨，近年随着我国基本建设的不断加强，甲醛消费量增长迅速。

Results The BMS absorbing bone marrow cell has the bestfunction of new bone formation in the 12th week.The second is HA,the cuttle bone haslittle and gelfoam is unable to formate new bone.

结果 12周时，骨基质海绵组成骨能力最强，羟基磷灰石组次之，海螵蛸组成骨能力最弱，明胶海绵组无成骨能力。

The preparation of polymer is required for high purity of glycolic acid, if not, low-weight polymer is obtained, therefore, high purity glycolic acid is scarce in the market. So, the research for the synthesis of glycolic acid is essential. In domestic and overseas, there are many methods for preparation of glycolic acid, including glycin oxidation, cyanogenesis, aldehyde oxidation, coupling of maldehyde and methyl formate, oxalic acid electrolysis, chloroactic acid hydrolysis and so on.

制备羟基乙酸的聚合物时，对羟基乙酸单体的纯度要求较高，否则得到的聚合物分子量较低，导致高纯度羟基乙酸的需求量逐年增长，目前在国内，高纯度的羟基乙酸还没有形成工业化规模生产，对羟基乙酸的合成进行研究是非常有意义的。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。