Results 21 to 30 of about 1,000,002 (365)

Research Progress on the Effect of Salts on the Stability of Methane Hydrate

open access: yesYankuang ceshi, 2018
The thickness of the methane hydrate stable zone is mainly controlled by the stability of methane hydrate. The temperature, pressure, pore water salinity, and gas component affect the thickness of the hydrate stable zone. The formation of methane hydrate
LIU Wei-yi   +3 more
doaj   +1 more source

Comparative Study of Deterioration in Built Heritage in a Coastal Area: Barbanza Peninsula (Galicia, NW Spain)

open access: yesGeosciences, 2023
The Barbanza Peninsula (Galicia, NW Spain) is located on the west coast of Galicia. It is a narrow tongue of terrain with an area of 416 km2 and a high altitudinal gradient, with the top having a maximum height of more than 600 m at a distance of less ...
Ana C Hernández   +3 more
doaj   +1 more source

Asymmetric addition of chiral boron-ate complexes to cyclic iminium ions [PDF]

open access: yes, 2014
Boron-ate complexes derived from enantioenriched secondary benzylic boronic esters and aryl lithiums have been reacted with quinolinium, pyridinium and dihydroisoquinolinium salts to give enantioenriched heterocyclic structures with very high ...
Aggarwal, Varinder K.   +4 more
core   +2 more sources

The Decopperization and Coagulation by Use the Carbon-N-Ox Method

open access: yesArchives of Metallurgy and Materials, 2017
This paper discusses the impact of complex chemical reagents during the process of decopperisation of slag. The beneficial effect of carbide response factors with the participation of nitrogen was indicated as well as the role of stimulators surfactants.
Bydałek A.W.   +3 more
doaj   +1 more source

Fluoroacidity evaluation in molten salts [PDF]

open access: yes, 2011
The fluoroacidity of several alkaline fluoride media was studied by monitoring the concentration of electroactive species which is decreasing versus time due to a gas species release, such as silicon fluorides, as indicated by the reaction: SiF(4+x)x ...
Bieber, Anne-Laure   +5 more
core   +4 more sources

Synthesis of Highly Stable 1,3-Diaryl-1H-1,2,3-triazol-5-ylidenes and Their Applications in Ruthenium-Catalyzed Olefin Metathesis [PDF]

open access: yes, 2011
The formal cycloaddition between 1,3-diaza-2-azoniaallene salts and alkynes or alkyne equivalents provides an efficient synthesis of 1,3-diaryl-1H-1,2,3-triazolium salts, the direct precursors of 1,2,3-triazol-5-ylidenes.
Bertrand, Guy   +6 more
core   +2 more sources

Evaluation of antifungal activity of sodium salts against onion basal rot caused by Fusarium oxysporum f.sp. cepae

open access: yesPlant Protection Science, 2014
The efficacy of twelve sodium salts as possible alternatives to synthetic fungicides for the control of onion basal rot caused by Fusarium oxysporum f.sp. cepae was evaluated.
Muharrem TÜRKKAN, İsmail ERPER
doaj   +1 more source

Salt marshes [PDF]

open access: yesCurrent Biology, 2014
Salt marshes are unique ecosystems that are brimming with diversity, and provide crucial shelter to coastal communities.
openaire   +2 more sources

A study of actoprotective activity of new 3-(thiophen-2-ylmethyl)-1H-1,2,4-triazole-5-thiol derivatives

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2020
The issue of fatigue is quite topical for the modern humanity. In order to work harder and earn as much money as possible, a person takes various stimulants, which have a number of side effects.
A. A. Safonov
doaj   +1 more source

Chiral Modification of the Tetrakis(pentafluorophenyl)borate Anion with Myrtanyl Groups [PDF]

open access: yes, 2019
The synthesis and characterization of chiral [B(C6F5)4]– derivatives bearing a myrtanyl group instead of a fluoro substituent in the para position are described.
Oestreich, Martin, Pommerening, Phillip
core   +1 more source

Home - About - Disclaimer - Privacy