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hydrate
2,5-Bihydrazino-1,3,4-thiadiazole (2) was synthesized by condensation of 2,5-bimercapto-1,3,4-thiadiazole (1) with hydrazine hydrate, and compound 2 reacted with acyl chloride to give 2,5-biacylhydrazino-1,3,4-thiadiazole derivatives (3a-3e).
      
Gas hydrate is a recently-found new source of energy that mostly exists in marine sediments.
      
In recent years, we have conducted gas hydrate exploration in the South China Sea.
      
The Xisha trough, one of the promising target areas for gas hydrate, is located in the northern margin of the South China Sea, adjacent to several large oil and gas fields.
      
These geochemical anomalies are quite similar to those found in gas hydrate locations in the world such as the Blake Ridge and may be related to the formation and dissociation of gas hydrates.
      
The salt exclusion effect during the gas hydrate formation will cause an increase in major ion concentrations in the pore waters that diffused upward such as Cl.
      
Low δ13C value of authigenic carbonates is a good indicator for gas hydrate occurrence.
      
In conclusion, we suggest that the Site XS-01 in the Xisha trough of the northern margin of the South China Sea is a potential target for further gas hydrate exploration.
      
On the basis of this model, the process of aerosol formation by the interaction between ammonia and a crystal hydrate of ferric nitrate in a flow-type reactor is studied.
      
Crystal Structure of a Mixed-Valence Hydroxonium Cerium Sulfate Hydrate
      
A New Modification of Monoaquadifluorouranyl Hydrate
      
Reaction of Diethyl 1,1-Cyclopropanedicarboxylate with Hydrazine Hydrate: Synthesis and Crystal Structure of 1-N-Amino-2-oxopyrr
      
Unsteady-State Methane Absorption by Water before Hydrate Formation
      
Synthesis and crystal and molecular structure of acetylacetonatobis(triphenylphosphine)palladium tetrafluoroborate hydrate
      
Effect of the Structure of a Proton-Hydrate System of Hydrogen Bonds on the Protonic Conductivity in Crystals of the Flavianic A
      
It is shown that there exist gas flow regimes in which there is self-purification of the tube wall of hydrate due to heating of the surrounding rocks.
      
Effect of liquid phase mobility on gas hydrate dissociation in reservoirs
      
It is shown that for high initial values of the hydrate and water saturations the mobility of the liquid phase must be taken into account.
      
For media with high permeability the amount of gas hydrate dissociated in the volume phase transition zone exceeds by several orders the amount of hydrate decomposed in the total dissociation zone.
      
Self-similar growth of a gas hydrate layer separating gas and liquid
      
 

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