1.We also identified that the expression of acetaldehyde dehydrogenase2a (ALDH2a) was increased under submergence or acetaldehyde stress, suggesting a co-regulation of ALDH, ACS and glyoxylate cycle in the reactions for coverting acetaldehyde into less toxic intermetabolites.
水淹时酶活性检测证实ICL 和ACS 酶活性都是上调的。 我们还发现乙醛脱氢酶2(aacetaldehyde dehydrogenase2a, ALDH2a)同时也受水淹和乙醛诱导,暗示了ALDH2a,ACS 和乙醛酸循环有非常密切的关系。
2.The methods to solve the problem are reducing the quantity of over?length PET chip,avoiding the accumulation of acetaldehyde in the system,controlling the acetaldehyde content in the mother PET chip so that the average mass fraction of acetaldehyde can be reduced from 1.26×10??-6 ?to 1.08 ×10??-6?. ?
降低醛含量的方法主要是减少大尺寸切片,降低系统中乙醛的积累,降低瓶级切片母片中的醛含量等,使平均的w(乙醛)从1.26×10-6降至1.08×10-6。
3.The synthesis of Ethyl Acetate with acetaldehyde from the waste liquid from vinylon factory by Tishchenko reaction was studied, the conversion of acetaldehyde was 91.5%, the reacting selectivity was 93.0%. The extraction of acetaldehyde, of the synthesis of catalyst and of the condensation was also discussed.
本文以维尼纶厂废液中提取的乙醛为原料 ,通过缩合反应合成乙酸乙酯 ,乙醛转化率达91 .5 % ,选择性达 93 .0 % ,并对乙醛的提取、催化剂合成及缩合反应进行了探讨。
4.RESULTS: 875μM concentration acetaldehyde acted on HSC,HSCTIMP-1、IL-6mRNA expression boosted up clearly in acetaldehyde group,TCM serum group weaken distinctly.
结果:以875μM的乙醛浓度作用于HSC,乙醛组HSCTIMP-1、IL-6mRNA表达明显增强,中药血清组与乙醛组相比明显减弱。
5.We studied the aldol condensation of benzaldehyde and acetaldehyde in pure HTLW in 0.5 L high pressure reactor. The pressure was 15 MPa and temperature was within 220-300 ℃. The mole ratio of benzaldehyde and acetaldehyde was 1:5.7. Fitting the data by Arrhenius equation could yield activation energy of (64.3±5.9)kJ/mol.
采用本实验室自主设计的0.5L高压反应釜,以苯甲醛和乙醛的缩合反应为研究对象,测定了15MPa下,温度220～300℃范围内无催化缩合反应的动力学数据,由Arrhenius方程拟合得到缩合反应的活化能为(64.3±5.9)kJ/mol。
6.Abstract: The kinetics parameters of biochemica l treatment of acetaldehyde wastew ater were determined under the pressurized condition.The mathematical modle of w a stewater biochemical treatment were built ,the design parameters of industrial-s cale treatment equipment of acetaldehyde wastewater were offered.
文摘:在加压条件下测定了乙醛废水的动力学参数，建立了废水生物处理动力学模型，为乙醛废水处理装置的工业化设计提供了设计参数.
7.Under the fermentative conditions of 500mL flask with 300mL 12oBx wort at 12oC for 8 days,the real degree of fermentation of the strain GR8 was 66.5%, and content of diacetyl, acetaldehyde, acetic ether and total higher alcohols in the fermented liquid of the fusant GR8 were 0.0583mg/L, 9.66mg/L, 22.8mg/L and 91.20mg/L, respectively.
发酵液中的双乙酰、乙醛、高级醇和乙酸乙酯等风味物质的含量分别为0.0583mg/L、9.66mg/L、91.20mg/L和22.8mg/L。
8.Dehydrogenation of ethanol to acetaldehyde was carried out in a membrane reactor/incorporating an inorganic alumina membrane, which was prepared by the sol-gel method. The characterization showed that the distribution of pore size was 3-5 nm, while permeability and separation factor were all in good accordance with Knudsen values.
应用Sol-gel法制备了无机氧化铝膜,其孔径大小集中分布在3～5nm间,透过率和分离系数均符合Knudsen扩散.
9.The acetaldehyde is further reduced by NADH to form ethanol, releasing only about a tenth of the energy that would be released by aerobic respiration.
乙醛进而结合NADH形成乙醇释放，仅为有氧呼吸十分之一的能量。
10.(2)The content of acetaldehyde in non spur type Starking fruit in SCA condition was lower than that of spur type Starkrimson,Redchief and Ultrared Del,but ethanol and ethyl acetate contents in Starking fruit was higher than that of spur type varieties at 90 days in storage.
②小袋气调贮藏时，红星苹果乙醛含量低于短枝型品种新红星及首红，而乙酸乙酯含量高于短枝品种。 贮藏90天时，红星苹果乙醛含量下降及乙酸乙酯增加更为明显。
