Gas Hydrate Phase Equilibrium in Methane + Ethylene Glycol, Diethylene Glycol, or Triethylene Glycol + Water System

2011 ◽  
Vol 56 (12) ◽  
pp. 4544-4548 ◽  
Author(s):  
Amir H. Mohammadi ◽  
Dominique Richon
Keyword(s):  
Phase Equilibrium ◽  
Ethylene Glycol ◽  
Diethylene Glycol ◽  
Gas Hydrate ◽  
Water System ◽  
Triethylene Glycol ◽  
Hydrate Phase

THE ACTIVATION OF PURIFIED HUMAN PLASMINOGEN IN SOLUTIONS OF ETHYLENE GLYCOLS

1963 ◽  
Vol 41 (1) ◽  
pp. 889-895 ◽  
Author(s):  
Phyllis S. Roberts
Keyword(s):  
Methyl Ester ◽  
Ethylene Glycol ◽  
Diethylene Glycol ◽  
Room Temperature ◽  
Fast Rate ◽  
Triethylene Glycol ◽  
Ethylene Glycols ◽  
Human Plasminogen ◽  
Glycol Solution ◽  
Rate Of Accumulation

Ethylene glycols have been found to allow activation of purified preparations of human plasminogen. The activity of the enzyme formed, plasmin, was measured using TAMe (p-toluene-sulphonyl-L-arginine methyl ester) as a substrate. In 50% (v/v) solutions of these compounds at pH 7.6 and 30 °C, plasmin accumulated faster in diethylene and triethylene glycols than in glycerol, but in ethylene glycol no plasmin was found. When lower concentrations of ethylene glycol (from zero to 50%) and shorter times of incubation were used, plasmin was found. With equimolar solutions (4.3 M) of glycerol and the three glycols, only diethylene glycol showed a fast rate of accumulation of plasmin. A 50% triethylene glycol solution partially inhibited the rate of spontaneous activation but stabilized the plasmin formed and therefore enzyme accumulated. At room temperature more plasmin accumulated than at higher temperatures when plasminogen was incubated in 50% triethylene glycol solution, and no plasmin was found when plasminogen was incubated at pH 7.6, 30 °C, in 50% solutions of propylene glycols, several ethers of the ethylene glycols, several polymers of various glycols, and dioxane.

Phase Equilibrium Measurements and Crystallographic Analyses on Structure-H Type Gas Hydrate Formed from the CH4−CO2−Neohexane−Water System

2006 ◽  
Vol 110 (10) ◽  
pp. 4583-4588 ◽  
Author(s):  
Tsutomu Uchida ◽  
Ryo Ohmura ◽  
Ikuko Y. Ikeda ◽  
Jiro Nagao ◽  
Satoshi Takeya ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Gas Hydrate ◽  
Water System

FIRE SAFETY OF HEAT-TRANSFER AGENTS FOR HEAT GENERATORS

2021 ◽  
pp. 11-21
Author(s):  
Геннадий Тимофеевич Земский ◽  
Леонид Петрович Вогман ◽  
Наталья Валентиновна Кондратюк
Keyword(s):  
Heat Transfer ◽  
Ethylene Glycol ◽  
Fire Safety ◽  
Diethylene Glycol ◽  
Operating Temperature ◽  
Triethylene Glycol ◽  
Fire Extinguishing ◽  
Nitrite Nitrate ◽  
Nitrate Mixture ◽  
Transfer Agents

Рассмотрены свойства двух групп теплоносителей, используемых для понижения рабочей температуры и для повышения рабочей температуры. В первую группу теплоносителей включены: этиленгликоль, диэтиленгликоль, триэтиленгликоль, пропиленгликоль, глицерин. Вторую группу теплоносителей составляют: дифенильная смесь, масло АМТ-300, масло ТЛВ-330, мобильтерм-600, дикумилметан, дитолилметан, тетрахлордифенил, тетракрезилсиликат, нафталин, тройная нафталиновая смесь, нитрит-нитратная смесь. Приводятся физико-химические и пожароопасные свойства названных теплоносителей, а также перечень профилактических противопожарных мероприятий и средств пожаротушения. There are considered the properties of two groups of heat-transfer agents used to reduce the operating temperature and to increase the operating temperature. The following substances are included in the first group of heat-transfer agents: ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, glycerin. The following substances are included in the second group of heat-transfer agents: diphenyl mixture, AMT-300 oil, TLV-330 oil, mobileterm-600, dicumylmethane, ditolylmethane, tetrachlorodiphenyl, tetracresyl silicate, naphthalene, triple naphthalene mixture, nitrite-nitrate mixture. There are cited the physicochemical and fire hazardous properties of the mentioned heat-transfer agents, as well as the list of preventive fire-fighting measures and fire-extinguishing facilities.

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