Results 81 to 90 of about 112,603 (200)

Modeling of chemical processes in the low pressure capacitive RF discharges in a mixture of Ar/C2H2

open access: yes, 2008
We study the properties of a capacitive 13.56 MHz discharge properties with a mixture of Ar/C2H2 taking into account the plasmochemistry and growth of heavy hydrocarbons. A hybrid model was developed to combine the kinetic description for electron motion
A. Bogaerts   +8 more
core   +1 more source

Detection of Acetylene toward Cepheus A East with Spitzer

open access: yes, 2007
The first map of interstellar acetylene (C2H2) has been obtained with the infrared spectrograph onboard the Spitzer Space Telescope. A spectral line map of the $\nu_5$ vibration-rotation band at 13.7 microns carried out toward the star-forming region ...
Boudin N.   +6 more
core   +1 more source

Lithium Imide‐Modified Nickel Catalysts for Selective Hydrogenation of Acetylene

open access: yesSmall Structures
Alkali/alkaline earth metal promoters play a crucial role in optimizing catalysts for the selective hydrogenation of acetylene. This study innovatively explores the effects of different forms of lithium (Li) promoters on enhancing ethylene selectivity ...
Peixi Liu, Fei Chang
doaj   +1 more source

Nitrogen retention in the riparian zone of watersheds underlain by discontinuous permafrost [PDF]

open access: yes, 2005
Thesis (M.S.) University of Alaska Fairbanks, 2005Riparian zones function as important ecotones for reducing nitrate concentration in groundwater and inputs into streams.
O'Donnell, Jonathan A.
core  

Energy characteristics of cathodic arc erosion plasma at synthesis of diamond-like carbon coatings

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2016
A cathode arc carbon plasma in a vacuum as well as in an atmosphere of acetylene at a pressure of 0.2 to 2.0 Pa during the deposition of diamond-like carbon coatings is considered.
I. P. Smyaglikov, S. O. Selifanov
doaj  

Hydrocarbons as Proton Receptors and Evidences of Unconventional and Unusual π···H, p-π···H and C···H Hydrogen Bonds

open access: yesOrbital: The Electronic Journal of Chemistry, 2019
In this current work, a brief historical narrative of the most popular theories that decisively aid in the comprehension of the hydrogen bond formation is presented.
Boaz Galdino de Oliveira
doaj  

Enhancement of salinity tolerance in wheat through soil applied calcium carbide

open access: yesSoil & Environment, 2009
Calcium carbide (CaC2) has been reported to increase growth and yield of crops under normal soil conditions. This study assessed its capacity to enhance salinity tolerance in wheat (Triticum aestivum L.; cv- 1076) under saline conditions.
Z. Ahmad, M. Abid , F. Azam
doaj  

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