Chemical StructureOilfieldSurfactant-grafted Polyacrylamide (S-PAM) flooding is a new technique used in Daqiang Oil Field in China and also a novel way for improving the recovery efficiency of primary oil layer after polymer flooding. S-PAM flooding technology is perfected gradually with the ...
structure and wafer surface interactions. Models for planarization investigate how wafer surface topography is removed or reduced by CMP, and include models for feature-level evolution, as well as die-level models for planarization as functions of layout, pad, and asperity properties. A general ...
The phase composition and crystallographic structure of the samples were analyzed by X-ray diffraction (XRD) using Bruker D8 Advance X-ray diffractometer with graphite monochromatized Cu Kα irradiation (λ = 0.15418 nm) conducted at 40 kV and 40 mA. The morphology and microstructure of the par...
Currently there are limited data on the composition of products available in a format which allows for large-scale modeling of near-field exposures to chemicals in consumer products. Previous efforts at the U.S. Environmental Protection Agency (U.S. EPA) have aggregated data on consumer product ...
The trifluoromethyl group can confer advantageous properties to biologically relevant molecules, but methods for its incorporation into aliphatic carbons that are more embedded within the core of the structure are less available. Here, the authors present a multicomponent coupling to synthesize carbon skele...
A method to synthesize polyoxymethylene dimethyl ethers. CN Patent: 101182367A, 2008.Suche in Google Scholar Chen QT, Xu AR, Li ZY, Wang JJ, Zhang SJ. Influence of anionic structure on the dissolution of chitosan in 1-butyl-3-methylimidazolium-based ionic liquids. Green Chem 2011; 13: ...
Humic substances (HS) are complex mixtures of natural organic material which are found almost everywhere in the environment, and particularly in soils, sediments, and natural water. HS play key roles in many processes of paramount importance, such as pla
Since the structure of PNIPAM is a three-dimensional network, the problem of pre-release of loaded chemicals leaking from the network structure is unavoidable. To address this problem, You et al. prepared a controlled release carrier with a gated structure by grafting PNIPAM onto the surface of...
However, the resultant secondary amide and carboxylic groups can undergo a subsequent dehydration to generate a stable imide structure at elevated temperatures, which has limited their use in the design of recyclable polymeric materials. To circumvent such irreversible dehydration, introducing secondary ...
activator within a particle matrix where it cannot generate free radicals that can escape the particle structure is not included in the term activator. Activator elements or compounds that cannot activate the formation of free radicals, for example because it is incorporated within a matrix where cha...