查询词典 ethylene

A study of Chemically Induced Dynamic Poiarization spectra is made, using a highly time resolved ESR, of photolized anthracenequinone radicals to determine the influence of surfactant micelles on the spin polarization of anthracenequinone anion. It is found that the CIDEP mechanism of photolization is mainly the radical pair mechanism of anthracenesemiquinone radical and of ethylene glycol ketyl R〓〓 or R〓 radical whose center is carbon in anthracenequinone/ethylene glycol system, but there is a certain amount of triplet state mechanism polarization.

分别研究了胶束和微乳液的"笼效应"对蒽醌和苯醌的光解CIDEP的影响，其结果如下：(1)对于蒽醌的CIDEP，在乙二醇溶剂中，极化的蒽醌自由基AQ〓和R〓自由基通过光解经过夺氢反应产生，其CIDEP机理主要是自由基对机理，但也包含了一部分三重态机理。

Ethylene production increased again as the floret began to senesce. A peak of ethylene production occurred 1.5 nL g^(-1 hr^(-1) at the half senescent floret stage.

花朵开始化时，乙烯生成又增加，在花半衰时，乙烯生成达到高峰（约为1.5 nL g^(-1)h^(-1)）。

The calculated results are in accordance with the experimental observation that OsO〓 is unreactive to methane under the experimental condition.Ⅱ. The mechanism of the reaction of FeO〓 with ethylene For the oxidation reaction of gas-phase FeO〓 with ethylene, PESs in sextet, quartet and doublet states for various reaction channels are obtained.

二FeO〓与乙烯的反应机理通过对气相FeO〓与乙烯的反应的各种可能的低能量路径进行研究，得到了各种反应通道在二重态、四重态和六重态等三个自旋态下的势能面。

Ethylene increased CaM content in tomato and strawberry fruits, which was promoted by additional Ca〓 and inhibited by blocking Ca〓 channel or chelating extracellular Ca〓. The results indicated that ethylene-inducd CaM accumulation was dependent on changing of cytoplasmic Ca〓 concentration.

乙烯促进草莓和番茄果实CaM增加，外加Ca〓促进这一作用，相反，阻断钙通道或减少胞外Ca〓均能抑制这一作用，表明乙烯对CaM的诱导依赖于细胞Ca〓浓度的变化。

CPZ and TFP inhibited ethylene-induced increase in activity of Ca〓-ATPase located in microsomal membrane in tomato and strawberry fruit, which indicated that 1 CaM involved in inducing of ethylene on Ca〓-ATPase; 2 the enzyme was regulated by CaM.

钙凋素拮抗剂CPZ和TFP能抑制乙烯诱导番茄果实和草莓果实微粒体膜Ca〓-ATPase活性，这表明CaM参与乙烯对该酶的诱导以及该酶活性受CaM的调节。

Monochloroethylene carbonate is prepared by chlorination of ethylene carbonate with sulfuryl chioride ,a solution of monochloroethylene carbonate in ethylene carbonate is reacted with triethylamine to give vinylene carbonate.A parameter design method was applied to select the optimum synthesis conditions.63.3％ and 78％ yields superior to the conventional for monochloroethylene carbonate and vinylene carbonate were obtained respectively,and the process was also simplified .

以碳酸乙烯酯为原料，用磺酰氯作为氯化剂生成一氯代碳酸乙烯酯，三乙胺为脱卤化剂在碳酸乙烯酯溶剂中合成碳酸亚乙烯酯，对一氯代碳酸乙烯酯和碳酸亚乙烯酯制备的工艺参数进行优化，收率分别达到63.3％和78％，均超过了传统方法，且简化了工艺，缩短了反应时间，易于工业化生产。

The energy gaps of ethylene bond with thiophene are smaller than that of ethylene bond with benzene.

能带结构和态密度研究表明：一，二环聚聚合物的能隙要低于三环的。

Similar to S-adenosylmethionine decarboxylase(B26),S-adenosylmethionine methyl-transferase(B70), allene oxide synthase(B38),ethylene receptor(B96),cytochrome P450(B58) and methionine synthase (B77) were found in ovaries of Pingyi Tiancha at 1d before the blossom day,which related to plant hormone and could participate in metabolic pathways of ethylene,polyamine,jasmonate acid and gibberellin,et al.,as well as had close relationship with maturity and senescence of plants.

在平邑甜茶开花前1d的子房中发现的S-腺苷甲硫氨酸脱羧酶(B26)、S-腺苷甲硫氨酸甲基转移酶(B70)、丙二烯氧化合酶(B38)、乙烯受体(B96)、细胞色素P450酶(B58)、甲硫氨酸合酶(B77)等相似基因片段与植物体内的生长素有关，将会参与乙烯、多胺、茉莉酸、赤霉素等的代谢途径，与植物的成熟和衰老具有密切的关系。

Methods Our experiment included treatments of ethylene 0, 250, 500 mgL^(-1,α-NAA 0, 50, 100 mgL^(-1 and joint addition of ethylene and α-NAA 250 mgL^(-1+50 mgL^(-1) for A. anomala and S. variegata plants.

实验分3种处理：单独用乙烯利溶液处理（浓度分别为0、250和500 mgL^(-1)）、单独用α-NAA溶液处理（浓度分别为0、50和100 mgL^(-1)）和二者混合处理（250 mgL^(-1)乙烯利溶液＋50 mgL^(-1)α-NAA溶液）。

The main results were as follows:'Brumal jujube' with higher respiration rate, which decreased slightly after harvest, and lower ethylene production, which had not the appearance of respiration and ethylene production peak, ethephon with different concentrations all increased respiration rate and the respiration rate increased with the raise of concentration ,which suggested 'brumal jujube ' was respiratory non-climactic fruits.

结果如下：冬枣采后果实呼吸强度高并呈平缓下降趋势，而乙烯释放量较低无明显高峰出现；不同浓度的乙烯利处理增加了果实呼吸强度，处理浓度越大，果实呼吸速率越高，说明冬枣为非跃变型果实；1000μL.L~(-1)乙烯利和100mg.L~(-1)ABA处理可显著提高绿熟冬枣采后的呼吸强度，两者无明显差异，但乙烯利处理显著增加了乙烯释放量、ACC含量和ACO活性，其作用比ABA明显；GA处理抑制了果实呼吸强度和乙烯释放量的增加。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。