英语人>网络例句>反应物 相关的搜索结果
网络例句

反应物

与 反应物 相关的网络例句 [注:此内容来源于网络,仅供参考]

There were obviously more chafers near the castor-oil plant than soybean, cotton, sweet potato, peanut, elm, Abutilon theophrasti Medic, there was significant difference between them.

华北大黑鳃金龟对不同植物挥发性物质的选择反应(1)采用水蒸气蒸馏法,二氯甲烷萃取,提取植物叶片的挥发性物质,无论对雌虫还是雄虫,蓖麻叶粗提物的诱虫活性均显著高于棉花、苘麻叶片粗提物。

This would indicate that the reaction between OH〓 and methanol adsorbate on Pt-Ru is the rate determining step.

这似乎意味着在Pt-Ru电极上甲醇吸附物氧化的决速步是吸附物与吸附的OH根之间的反应。

Objective This study was aimed at optimizing the preparation of 5-Fluorouracil and peanut agglutinin conjugates so as to obtain a conjugate with high activity and high drug ratio, and to choose a suitable dosage form in the light of its properties.

目的 优化5-氟尿嘧啶(5-Fu)-花生凝集素结合物的反应条件,以期制备得到既有生物活性又有较高药物结合率的结合物。

It was found that this polymeric arsine palladium(0) complex is a highly active and stereoselective catalyst for arylation of styrene or acrylic acid.

通过用水合肼对上述聚硅氧烷负载的单齿胂钯配合物进行还原制备了聚硅氧烷负载的单齿胂钯(0)配合物,研究表明它是苯乙烯、丙烯酸芳基化反应的高活性和高立体选择性的催化剂。

In addition, the carbon chain of butylene glycol was longer than that of ethylene glycol, so the spatial hindrance of butylene glycol was bigger than that of ethylene glycol, so the reaction rate of butylene glycol was longer than that of ethylene glycol.

由邻位化合物生成的五元环络合物比由间位化合物形成的六元环络合物稳定性高,反应速度快。

In the case of continuous operation, the consumption of enzyme, conversion and cost with different number of reaction stages were examined.

对于批式反应,计算了不同浓度底物的水解过程和各种抑制因子对反应过程的影响;对于连续反应,计算了不同级数下的需酶量、转化率和成本消耗。

The results of the EAG showed that O. furnacalis had responses to extracts of C. edulis and 4 maizes, moreover all these responses had no significant difference.

EAG反应结果显示,亚洲玉米螟对蕉藕和4个玉米品种叶片粗提物均可产生EAG反应,多数反应相对值之间无显著差异。

The result indicated that MgO and α- methacrylic acid can together thicken epoxy, and the speed of thickening epoxy become quickly with the increasing content of MgO; when the ratio of MgO and α- methacrylic acid is 3:1, thickening epoxy have a better effect; the thickening mechanism: the terminal corboxyl group of α- methacrylic acid react with MgO, and it accompany with large numbers of heat, the heat can accelerate the reaction between the terminal corboxyl group with the secondary hydroxyl groups of epoxy, intermolecular hydrogen bonding which the water of above-mentioned formation result in and complex compound which format the metal atoms and carbonyl group complexing collective increase the viscosity of epoxy resin.

结果表明:MgO和α-甲基丙烯酸配合可增稠环氧树脂,随着MgO加入量的增加,环氧树脂增稠的速度加快;MgO与α-甲基丙烯酸为3:1时,增稠环氧树脂的效果较好;推测环氧树脂的增稠机理是α-甲基丙烯酸中的端羧基与氧化镁反应,放出热量促使其端羧基与环氧树脂中的仲羟基反应,上述反应生成水产生的氢键和羰基与氧化镁中的金属原子形成络合物共同导致环氧树脂的粘度增加。

Furthermore, the effects of ligands, metal and reaction time on the reaction were also researched, and the process of new ligand-metal catalysis for Diels-Alder reaction was also analyzed according to Evans" square planar mode and Corey"s tetrahedral manner.

我们对影响配体对映选择性能的各种因素,如配体结构、金属离子、反应时间等进行了研究,而且根据Evans的平面四方形模式与Corey的四面体过渡态理论为新配体—金属配合物催化的该反应提出了可能的反应机理,并对产物的优势构型作了理论分析。

The formal potentials in cyclic voltammograms of these 3+ valence complexes are followed: Co〓-TPPS (-0.08V )>Fe〓TPPS (-0.14V)>Mn〓-TPPS (-0.23V). The electrochemical reaction of Mn〓-TPPS is reversible, and both of Co〓-TPPS and Fe〓-TPPS are quasi-reversible. The standard heterogeneous rate constants of Co〓-TPPS and Fe〓-TPPS were determined to be 1. 4×10〓cm/s and 1.4×10〓cm/s respectively. The rates of electrode reaction are as followed: Mn〓-TPPS>Co〓-TPPS>Fe〓-TPPS, e.i. Mn〓-TPPS is the most easily oxidized by the dissolved oxygen, and Fe〓-TPPS is oxidized slower than Co〓-TPPS. Ni〓-TPPS can not be oxidized. It is considered that oxygen plays an important role in the valence change of central metal atom and the rate of electron transfer in some metalloporphyrins.

三价金属卟啉络合物在循环伏安图上可得到三价到二价的还原和氧化响应,电极电位从大到小排列为:Co〓-TPPS(-0.08V)>Fe〓-TPPS(-0.14V)>Mn〓-TPPS(-0.23V),电极反应可逆性也不相同,Mn〓-TPPS是可逆过程,Co〓-TPPS、Fe〓-TPPS是准可逆过程,实验测得Co〓-TPPS的标准电极反应速率常数ks=1.4×10〓cm/s,Fe〓-TPPS的ks=1.4×10〓cm/s,电极反应的速率从大到小为:Mn〓-TPPS>Co〓-TPPS>Fe〓-TPPS,即Mn〓-TPPS最容易被溶解氧所氧化,Fe〓-TPPS被氧化的速度最慢,Ni〓-TMPyP不能被氧化,因此我们认为溶解氧对金属卟啉中心离子的价态和电子转移速率起着重要作用。

第55/100页 首页 < ... 51 52 53 54 55 56 57 58 59 ... > 尾页
推荐网络例句

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特,那个是爱朗。

Articulate the aims, objectives and key aspects of a strategic business plan.

明确的宗旨,目标和重点战略业务计划。