查询词典 ethylene

Their technology and process is basically similar to that used ethylene, the raw material for the oxygen in the silver catalyst, caused by methane or nitrogen stabilizer, the existence of inhibitors of chloride, ethylene oxide directly generate ethylene oxide and ethylene B N and further to certain substances in water than in the tubular reactor for generating hydration ethylene glycol, ethylene glycol solution through evaporation to mention thick, dehydration, fractionation be ethylene glycol and other by-products.

它们的工艺技术和工艺流程基本上相似，即采用乙烯、氧气为原料，在银催化剂、甲烷或氮气致稳剂、氯化物抑制剂存在下，乙烯直接氧化生成环氧乙烷，环氧乙烷进一步与水以一定物质的量比在管式反应器内进行水合反应生成乙二醇，乙二醇溶液经蒸发提浓、脱水、分馏得到乙二醇及其他副产品。

The kinetic behaviors of ethylene homo- olymerization and ethylene / l-hexene co-polymerization , catalyzed by the metallocene catalyst PS-DVB-MC in an 0.5 L stainless steel reactor , were studied. The effects of polymerization conditions on ethylene polymerization , such as concentration of catalyst , temperature of polymerization , pressure of ethylene , molar ratio of AI / Z r , etc ., were also investigated . Some leading results were as follows : the activity of the catalyst PS–DVB- MC for ethylene homo-polymerization was high ( 1.053 x 107 gPE / mol Zr·h ), but the molar ratio of AI / Zr was low ( 350:1 ); the catalytic ability for ethyleneα-olefin ( such as l hexene etc .) co-olymerization was great , and the corresponding activity come up to a maximum of 1.753 x 107 gPE / mol Zr·h while concenlration of l-hexene was 0.080 mol / L ; the molecular weight of polyethylene was about 180,000 , meanwhile the molecular weight distribution was narrow ( 2.19 ); the bulk density of polyethylene and ethylene / l-hexene co -polymer were 0.25 and 0.34 respectively .

采用0.5L高压不锈钢反应釜，对催化剂PS–DVB-MC催化乙烯均聚和乙烯/ l-己烯共聚合的动力学行为进行了研究，详细考察了催化剂浓度、反应温度、压力、Al/ Zr比、1-己烯浓度等因素对乙烯聚合反应的影响，得到如下主要结论：催化剂PS-DVB-MC具有催化乙烯均聚的高活性(1.053×107g PE / mo1 zr.hr)，低Al / Zr比( 350：1 )；具有良好的催化乙烯与α-烯烃(如1-己烯等)共聚的能力，在1-己烯浓度为0.080 mol / L时，催化活性达到最大(1.783×107 g PE / molZr.hr)；乙烯均聚产物的分子量在18万左右，分子量分布窄( 2.19 )。

The cattleya cut flower treated with 0.1 ppm, 1 ppm and 5 ppm ethylene for 24 hrs at 25℃compared with the control. The control had normal flower at 2nd day after treating, but 0.1ppm ethylene treatment had slight wilt in the petal and still had ornamental value. Treatments with 1 ppm and 5 ppm ethylene had complete wilt in the corolla and lost ornamental value. The treatments with different concentration of ethylene caused considerable flower senescence, the decrease of water uptake and fresh weight of cattleya cut flower in the vase. Data showed that cattleya cut flower was one of orchids very sensitive to ethylene response.

嘉德丽雅兰切花以不同浓度外加乙烯(0.1ppm、1PPm、5PPm)於25℃下处理24小时后，瓶插第2天，以0.1ppm处理者切花花瓣已稍萎凋，以1ppm及5ppm处理者，花朵已完全萎凋而无观赏价值，对照组花朵仍然完好，乙烯处理之切花吸水量和鲜重亦於第2天明显下降，显示嘉德丽雅兰切花对乙烯非常敏感。

Mission:"equality and mutual benefit, reputation first, unity and cooperation and friendship between the long-term" supply products: ethylenediamine; diethylamide; triethylamine; Diethylenetriamine; three ethylene diamine; three ethylene amines 40; 40 Five ethylene amines; five ethylene amines 6; caprolactam; DMF; allyl amine; N, N dimethylaniline; propylamine; are butylamine; are TOA; 3 Poly Cyanamide; 1,2 c diamine; ethanolamine; diethanolamine, triethanolamine; potassium iodide, potassium hydroxide, potassium permanganate, toluene, xylene, toluene of chlorine ; Acetone, butanone; acetylacetone; ethyl acetate, butyl acetate; Y-butyrolactone; DMC; acetyl of methyl acetate; Sanfu acetyl acid; Sanfu acetyl B Ethyl; methanol, ethanol, isopropanol; propylene glycol; glycerol; propargyl alcohol; 1.3 propylene glycol; xylitol; acetic acid; have acid; mercaptoacetic acid; vary Bitterness; adipic acid; trifluoroacetic acid; oxalic acid, the amino acid; o-amygdalin acid; DL-Acid; anhydrous piperazine; six non-piperazine, furfural, castor oil, ethylene Aldehyde; glutaraldehyde, multi-POM; isopropyl ether; anisole; tetrahydropyrrole; pure pyridine; 1.2 dichloroethane; methylene chloride, chloroform, carbon tetrachloride; hydrazine hydrate; Nonylphenol;-m-cresol; Se phenol; phenol; the tert-butyl phenol; Titanium Dioxide; iron; full Tangfen; Bisphenol A; azo two different nitrile; sodium azide; sodium carbonate ; Sodium chloride; iron oxide; cuprous chloride; thionyl chloride; D4; sodium bicarbonate; ammonia, potassium chloride; anhydrous sodium sulphite; ammonium persulfate; glycol Dingmi; B Glycol ether; calcium chloride; cyclohexanone; cyclohexane, methyl tertiary butyl ether, potassium carbonate, ferric chloride, potassium nitrate; Linsuansanna; zinc oxide; sodium nitrite; antimony oxide; Tartrate; OP-10; TX-10; tablets base; AES; sodium benzoate, sodium citrate; partial sodium silicate, sodium perborate, a sodium carbonate, sodium benzene; Asia sodium chlorate; Wuluo Care products; urea; hydrochloric acid, sulfuric acid, lactic acid; amino acid, hydrogen peroxide, ammonium bicarbonate

公司宗旨："平等互利，信誉至上，团结合作，友谊长久"乙二胺；二乙胺；三乙胺；二乙烯三胺；三乙烯二胺；三乙烯四胺；四乙烯五胺；五乙烯六胺；己内酰胺；二甲基甲酰胺；烯丙基胺；N，N二甲基苯胺；正丙胺；正丁胺；正辛胺；三聚氰胺；1，2丙二胺；一乙醇胺；二乙醇胺；三乙醇胺；碘化钾；氢氧化钾；高锰酸钾；甲苯；二甲苯；对氯甲苯；丙酮；丁酮；乙酰丙酮；醋酸乙酯；醋酸丁酯；Y-丁内酯；碳酸二甲酯；乙酰乙酸甲酯；三伏乙酰乙酸；三伏乙酰乙酸乙酯；甲醇；无水乙醇；异丙醇；丙二醇；丙三醇；丙炔醇；1.3丙二醇；木糖醇；冰醋酸；己醛酸；巯基乙酸；异辛酸；己二酸；三氟乙酸；乙二酸；对氨基苯乙酸；邻氯苦杏仁酸；DL-扁桃酸；无水哌嗪；六无哌嗪；糠醛；蓖麻油；乙二醛；戊二醛；多聚甲醛；异丙醚；苯甲醚；四氢吡咯；纯吡啶；1.2二氯乙烷；二氯甲烷；三氯甲烷；四氯化碳；水合肼；壬基酚；纯间甲酚；硒酚；苯酚；对叔丁基苯酚；钛白粉；铁粉；全糖粉；双酚A；偶氮二异丁腈；叠氮化钠；碳酸钠；氯化钠；三氧化二铁；氯化亚铜；氯化亚砜；D4；碳酸氢钠；氨水；氯化钾；无水亚硫酸钠；过硫酸铵；乙二醇丁醚；乙二醇乙醚；氯化钙；环己酮；环己烷；甲基叔丁基醚；碳酸钾；三氯化铁；硝酸钾；磷酸三钠；氧化锌；亚硝酸钠；氧化锑；酒石酸；OP-10；TX-10；粒碱；AES；苯甲酸钠；柠檬酸钠；偏硅酸钠；过硼酸钠；过碳酸钠；苯磺酸钠；亚氯酸钠；乌洛托品；尿素；盐酸；硫酸；乳酸；氨基磺酸；双氧水；碳酸氢铵

Mission:"equality and mutual benefit, reputation first, unity and cooperation and friendship between the long-term" supply products: ethylenediamine; diethylamide; triethylamine; Diethylenetriamine; three ethylene diamine; three ethylene amines 40; 40 Five ethylene amines; five ethylene amines 6; caprolactam; DMF; allyl amine; N, N dimethylaniline; propylamine; are butylamine; are TOA; 3 Poly Cyanamide; 1,2 c diamine; ethanolamine; diethanolamine, triethanolamine; potassium iodide, potassium hydroxide, potassium permanganate, toluene, xylene, toluene of chlorine ; Acetone, butanone; acetylacetone; ethyl acetate, butyl acetate; Y-butyrolactone; DMC; acetyl of methyl acetate; Sanfu acetyl acid; Sanfu acetyl B Ethyl; methanol, ethanol, isopropanol; propylene glycol; glycerol; propargyl alcohol; 1.3 propylene glycol; xylitol; acetic acid; have acid; mercaptoacetic acid; vary Bitterness; adipic acid; trifluoroacetic acid; oxalic acid, the amino acid; o-amygdalin acid; DL-Acid; anhydrous piperazine; six non-piperazine, furfural, castor oil, ethylene Aldehyde; glutaraldehyde, multi-POM; isopropyl ether; anisole; tetrahydropyrrole; pure pyridine; 1.2 dichloroethane; methylene chloride, chloroform, carbon tetrachloride; hydrazine hydrate; Nonylphenol;-m-cresol; Se phenol; phenol; the tert-butyl phenol; Titanium Dioxide; iron; full Tangfen; Bisphenol A; azo two different nitrile; sodium azide; sodium carbonate ; Sodium chloride; iron oxide; cuprous chloride; thionyl chloride; D4; sodium bicarbonate; ammonia, potassium chloride; anhydrous sodium sulphite; ammonium persulfate; glycol Dingmi; B Glycol ether; calcium chloride; cyclohexanone; cyclohexane, methyl tertiary butyl ether, potassium carbonate, ferric chloride, potassium nitrate; Linsuansanna; zinc oxide; sodium nitrite; antimony oxide; Tartrate; OP-10; TX-10; tablets base; AES; sodium benzoate, sodium citrate; partial sodium silicate, sodium perborate, a sodium carbonate, sodium benzene; Asia sodium chlorate; Wuluo Care products; urea; hydrochloric acid, sulfuric acid, lactic acid; amino acid, hydrogen peroxide, ammonium bicarbonate

公司宗旨：&平等互利，信誉至上，团结合作，友谊长久&乙二胺；二乙胺；三乙胺；二乙烯三胺；三乙烯二胺；三乙烯四胺；四乙烯五胺；五乙烯六胺；己内酰胺；二甲基甲酰胺；烯丙基胺；N，N二甲基苯胺；正丙胺；正丁胺；正辛胺；三聚氰胺；1，2丙二胺；一乙醇胺；二乙醇胺；三乙醇胺；碘化钾；氢氧化钾；高锰酸钾；甲苯；二甲苯；对氯甲苯；丙酮；丁酮；乙酰丙酮；醋酸乙酯；醋酸丁酯；Y-丁内酯；碳酸二甲酯；乙酰乙酸甲酯；三伏乙酰乙酸；三伏乙酰乙酸乙酯；甲醇；无水乙醇；异丙醇；丙二醇；丙三醇；丙炔醇；1.3丙二醇；木糖醇；冰醋酸；己醛酸；巯基乙酸；异辛酸；己二酸；三氟乙酸；乙二酸；对氨基苯乙酸；邻氯苦杏仁酸；DL-扁桃酸；无水哌嗪；六无哌嗪；糠醛；蓖麻油；乙二醛；戊二醛；多聚甲醛；异丙醚；苯甲醚；四氢吡咯；纯吡啶；1.2二氯乙烷；二氯甲烷；三氯甲烷；四氯化碳；水合肼；壬基酚；纯间甲酚；硒酚；苯酚；对叔丁基苯酚；钛白粉；铁粉；全糖粉；双酚A；偶氮二异丁腈；叠氮化钠；碳酸钠；氯化钠；三氧化二铁；氯化亚铜；氯化亚砜；D4；碳酸氢钠；氨水；氯化钾；无水亚硫酸钠；过硫酸铵；乙二醇丁醚；乙二醇乙醚；氯化钙；环己酮；环己烷；甲基叔丁基醚；碳酸钾；三氯化铁；硝酸钾；磷酸三钠；氧化锌；亚硝酸钠；氧化锑；酒石酸；OP-10；TX-10；粒碱；AES；苯甲酸钠；柠檬酸钠；偏硅酸钠；过硼酸钠；过碳酸钠；苯磺酸钠；亚氯酸钠；乌洛托品；尿素；盐酸；硫酸；乳酸；氨基磺酸；双氧水；碳酸氢铵

Our country ethylene diamine mainly uses in producing the agricultural chemicals (woods manganese zinc, dithane Z-78, generation of woods amine and pesticide, weed killer, disinfectant), the surface active agent (lives geminate stearic acid amide, alkyl imidazole lin, double amide, with oxirane, epoxypropane synthesizes non-ionic surface active agent), the epoxy resin firming agent (polyamide resins, epoxy firming agent, hydroxyethyl ethylene diamine and so on), the wash assistant (ethylene diamine four ethanoic acid and sodium salt series chelating agents), medicine raw material (aminophylline, washes must be peaceful, nose eye only, deinsectization spirit and so on), water treatment medicinal preparation (ethylene diamine four methylene phosphonates, second grade trunk base ethylidene two phosphine acids), corrosion inhibitor dye fixing agent, photography materialFixing bath and oil dope and so on.

我国乙二胺主要用于生产农药（森锰锌、代森锌、代森胺及杀虫剂、除草剂、杀菌剂），表面活性剂（生成双硬脂酸酰胺，烷基咪唑啉、双酰胺，与环氧乙烷，环氧丙烷合成非离子表面活性剂），环氧树脂固化剂（聚酰胺树脂，环氧固化剂，羟乙基乙二胺等），洗涤助剂（乙二胺四乙酸及其钠盐系列螯合剂），医药原料（氨茶碱，洗必泰，鼻眼净，灭虫灵等），水处理剂（乙二胺四甲叉膦酸盐，乙脒基乙叉二膦酸），缓蚀剂染料固色剂，照相材料定影液及润滑油添加剂等。

When EGTA (Ca〓 chelator), Verapmil and LaCl〓(Ca〓 channel blockers) were used to treat tomato fruit at green mature and strawberry fruit at white stage with ethylene, they could reverse ethylene-induced increase in ethylene production in tomato and strawberry, PG activity, lycopene content, soluble protein content in cell wall in tomato and degradation in soluble protein in strawberry, which indicated blocking Ca〓 channel in plasma membrane or chelating Ca〓 can decrease intracellular Ca〓, further inhibite ethylene-induced maturation, ripening and senescence of fruit.

用质膜钙通道阻断剂异博定、钙通道Ca〓竞争性抑制剂以及Ca〓专一性螯合剂与乙烯一起处理绿熟期番茄果实和乳白期草莓果实，均可抑制乙烯诱导番茄和草莓的乙烯生成、番茄PG活性的提高、番茄红素含量的增加和细胞壁可溶性蛋白含量的增加以及草莓可溶性蛋白的分解，表明阻断质膜Ca〓通道或螯合胞外Ca〓以减少胞内Ca〓能抑制乙烯对果实的催熟作用，间接证明乙烯对果实成熟衰老的诱导与胞外Ca〓内流引起的胞质Ca〓浓度的增加密切相关，表明乙烯信号转导可能与钙信使有关，调节胞质Ca〓浓度可调节乙烯对果实的催熟作用。

Fine chemicals to add auxiliary Series: lubricating oil pour point depressant, calcium zinc magnesium methacrylate, methyl acrylic acid lauryl ester, tetradecane methacrylate ester, methacrylic acid octadecyl ester, a acid ethylene glycol, diethylene glycol methacrylic acid ester, glycidyl methacrylate, the second reduction of three ethylene glycol dimethyl acrylate, acrylic acid lauryl ester, tetradecyl acrylate, octadecyl acrylate, acrylic acid ethylene glycol, diethylene glycol acrylate esters, glycidyl, two shrink three acrylate such as ethylene glycol.

精细化工添加助剂系列：润滑油降凝剂，甲基丙烯酸钙锌镁，甲基丙烯酸月桂酯，甲基丙烯酸十四烷酯，甲基丙烯酸十八烷基酯，甲基丙烯酸乙二醇，甲基丙烯酸二乙二醇酯，甲基丙烯酸缩水甘油酯，二缩三乙二醇二甲基丙烯酸酯，丙烯酸月桂酯，丙烯酸十四酯，丙烯酸十八酯，丙烯酸乙二醇，丙烯酸二乙二醇酯，丙烯酸缩水甘油酯，二缩三乙二醇丙烯酸酯等。

MCP also had a significant antagonism to the exogenous ethylene effects on the climacteric fruits, but did't in non-climacteric fruit. Studies showed that the main mechanism of 1-MCP inhibiting ethylene synthesis in Starking apple and Feicheng peach fruit lie in the stimulation to ACS activity in ethylene system Ⅰ and the inhibition to it in system Ⅱ, and the inhibition on ACO activity rise in the whole ethylene synthesis system. But 1-MCP didn't affect the ACO and ACS activity in vitro.

研究证明1-MCP抑制红星苹果和肥城桃果实乙烯合成的主要机制在于对系统Ⅰ乙烯中ACS活性的刺激和系统Ⅱ乙烯中ACS活性的抑制，以及对整个乙烯合成过程中ACO活性升高的延缓，但对离体ACO和ACS活性并没有表现出明显的影响。

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。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。