Thiokol Propulsion has worked extensively to replace 1,1,1-trichloroethane (TCA) with ozone depleting chemicals (ODC)-free solvents for use in the manufacture of the Reusable Solid Rocket Motor (RSRM) for the Space Shuttle Program.

TCA conservation and elimination effort in 1989, the RSRM production TCA usage rate substantially dropped to about 7, 630 pounds (680 gallons) in 2000. The three-phase ODC Elimination Program accomplished this dramatic reduction in usage of this environmentally harmful solvent. Table 1 summarizes the general details of each phase of this ...

The purpose of the ODC Elimination Program of the Space Shuttle RSRM Program is to eliminate the usage of 1, 1, 1 trichloroethane (TCA) in all RSRM (Reusable...

Thiokol Propulsion has worked extensively to replace 1,1,1-trichloroethane (TCA) with ODC-free solvents for use in the manufacture of the Reusable Solid Rocket Motor (RSRM) for the Space Shuttle Program.

Customer pressure, employee concern and the new Federal labeling requirements for Class I ozone depleting chemicals (ODC) combined to motivate Hardigg Industries to eliminate 1,1,1 trichloroethane (TCA) from its manufacturing operations.

Health Hazard Summary: 1,1,1-Trichloroethane (TCA) most commonly affects the nervous system, causing headaches, nausea, dizziness, drowsiness, and symptoms similar to drunkenness. TCA can also irritate the eyes, nose, and skin. Uses: TCA is a widely used industrial solvent. Some of its most common uses are as a:

2011年7月15日 · 三羧酸循环，又称为 柠檬酸循环 或TCA循环。 不可逆的有：第一步，乙酰辅酶A在柠檬酸合酶的作用下与草酰乙酸反应生成柠檬酸；第三步中的，异柠檬酸在异柠檬酸脱氢酶的作用下脱去2个氢离子和 二氧化碳，形成草酰琥珀酸后，迅速脱羧形成α-酮戊二酸；第四步，α-酮戊二酸形成琥珀酰辅酶A，催化酶为α-酮戊二酸脱氢酶系。 累死我了！ 你可以看由张丽萍、杨建雄两位教授编写的 《生物化学简明教程》 第四版，第238至241页有详细过程，我虽然在竞赛的 …

A short-term study was performed to evaluate the effects of 1,1,1- trichloroethane (TCA) and triclocarban (TCC) on trichloroethene (TCE) removal in a reactor fed with lactate as the sole...

培养基上清直接电泳跑出来的条带经常很难看，可以TCA沉淀浓缩后跑电泳，一般表达量大于1mg/ml可以看到明显条带，这是我用的TCA沉淀方法，效果很好： 1.菌液10000g,离心5分钟，收集表达上清。