Results 31 to 40 of about 468,171 (369)

Gas hydrate dissociation off Svalbard induced by isostatic rebound rather than global warming

open access: yesNature Communications, 2018
Methane seepage from the upper continental slopes of Western Svalbard has previously been attributed to gas hydrate dissociation induced by anthropogenic warming of ambient bottom waters.
K. Wallmann   +12 more
semanticscholar   +1 more source

Structural basis for the transformation pathways of the sodium naproxen anhydrate–hydrate system

open access: yesIUCrJ, 2014
Crystal structures are presented for two dihydrate polymorphs (DH-I and DH-II) of the non-steroidal anti-inflammatory drug sodium (S)-naproxen. The structure of DH-I is determined from twinned single crystals obtained by solution crystallization.
Andrew D. Bond   +5 more
doaj   +1 more source

Research progress of promoters and promoting mechanisms for hydrate-based gas separation

open access: yes工程科学学报, 2021
Unconventional natural gas is a type of high-quality clean energy, which often contains some gases as impurities that cause reductions in its combustion heat value and utilization efficiency. Therefore, developing gas separation technologies to remove or
Lan-yun WANG   +6 more
doaj   +1 more source

Mechanical Creep Instability of Nanocrystalline Methane Hydrates [PDF]

open access: yes, 2020
Mechanical creep behaviors of natural gas hydrates (NGHs) are of importance for understanding mechanical instability of gas hydrate-bearing sediments on Earth. Limited by the experimental challenges, intrinsic creep mechanisms of nanocrystalline methane hydrates remain largely unknown yet at molecular scale. Herein, using large-scale molecular dynamics
arxiv   +1 more source

Synergistic Effect of Glycol Ethers with a Kinetic Inhibitor (Poly(VP-VCap)) for Sweet Natural Gas Hydrate Formation: (Concentration Effect of Glycol Ethers) [PDF]

open access: yesJournal of Petroleum Science and Technology, 2019
Formation of natural gas hydrate is a serious problem in the gas and oil industry because it can plug pipelines and destroy the equipment. This study aimes to evaluate the concentration effect of glycol ethers on their synergism with a commercial kinetic
Ghasem Khatinzadeh   +3 more
doaj   +1 more source

The Thermodynamic and Kinetic Effects of Sodium Lignin Sulfonate on Ethylene Hydrate Formation

open access: yesEnergies, 2021
Hydrate-based technologies (HBTs) have high potential in many fields. The industrial application of HBTs is limited by the low conversion rate of the water into hydrate (RWH), and sodium lignin sulfonate (SLS) has the potential to solve the above problem.
Yiwei Wang   +8 more
doaj   +1 more source

The Atomic-Level Structure of Cementitious Calcium Silicate Hydrate

open access: yes, 2017
Efforts to tune the bulk physical properties of concrete are hindered by a lack of knowledge related to the atomic-level structure and growth of calcium silicate hydrate phases, which form about 50–60% by volume of cement paste.
Abhishek Kumar   +8 more
semanticscholar   +1 more source

Characterization of fungal carbonyl sulfide hydrolase belonging to clade D β‐carbonic anhydrase

open access: yesFEBS Letters, Volume 599, Issue 8, Page 1146-1158, April 2025.
Here, we performed a functional analysis of the fungal enzymes belonging to clade D of the β‐class carbonic anhydrase family (β‐D‐CA). The β‐D‐CAs in the basidiomycete Gloeophyllum trabeum and the ascomycete Trichoderma harzianum showed very low activity in the hydration of CO2 but exhibited high activity in the hydrolysis of carbonyl sulfide (COS ...
Ryuka Iizuka   +6 more
wiley   +1 more source

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