Results 31 to 40 of about 118,555 (354)

Effect of PTFE and Some Additives of Engine Oil on Tribological Properties between Polyamide and Carbon Steel

open access: yesTribology Online, 2018
Effect of polytetrafluoroethylene (PTFE) and some additives of engine oil on tribological properties between polyamide (PA) and carbon steel was studied with a pin-on-disk type tribometer. Friction and wear properties of PA were improved by blending PTFE
Masayoshi Muraki   +2 more
doaj   +1 more source

Combined Effects of Polyamide Microplastics and Hydrochemical Factors on the Transport of Bisphenol A in Groundwater

open access: yesSeparations, 2023
Polyamide (PA) and bisphenol A (BPA) are selected as typical microplastic and endocrine-disrupting chemicals in this study. The adsorption of BPA on the surface of PA and the effect of PA on the transport behavior of BPA in groundwater are systematically
Zhou Cheng   +9 more
doaj   +1 more source

Molecular dynamics simulations of the interactions of potential foulant molecules and a reverse osmosis membrane [PDF]

open access: yes, 2011
Reverse osmosis (RO) is increasingly one of the most common technologies for desalination worldwide. However, fouling of the membranes used in the RO process remains one of the main challenges. In order to better understand the molecular basis of fouling
Gale, Julian D., Hughes, Zak E.
core   +1 more source

Ionic Liquid-Mediated Interfacial Polymerization for Fabrication of Reverse Osmosis Membranes

open access: yesMembranes, 2022
This study revealed the effects of incorporating ionic liquid (IL) molecules: 1-ethyl, 1-butyl, and 1-octyl-3-methyl-imidazolium chlorides with different alkyl chain lengths, in interfacial polymerization (IP) on the structure and property (i.e ...
Nisha Verma   +4 more
doaj   +1 more source

Temperature-sensitive protein–DNA dimerizers [PDF]

open access: yes, 2005
Programmable DNA-binding polyamides coupled to short peptides have led to the creation of synthetic artificial transcription factors. A hairpin polyamide-YPWM tetrapeptide conjugate facilitates the binding of a natural transcription factor Exd to an ...
Ansari, Aseem Z.   +6 more
core   +1 more source

Delamination resistant composites by interleaving bio-based long-chain polyamide nanofibers through optimal control of fiber diameter and fiber morphology [PDF]

open access: yes, 2020
In this work an innovative electrospinning system is proposed that simultaneously has an adequate temperature resistance, a high increase in mode I (þ51%) and mode II (þ96%) delamination performance and can be commercially produced.
Daelemans, Lode   +5 more
core   +2 more sources

Theoretical simulation of the infrared signature of mechanically stressed polymer solids

open access: yesBeilstein Journal of Organic Chemistry, 2017
Mechanical stress leads to deformation of strands in polymer solids, including elongation of covalent bonds and widening of bond angles, which changes the infrared spectrum.
Matthew S. Sammon   +2 more
doaj   +1 more source

Performance Analysis of an Aperture-Coupled THz Antenna for Diagnosing Breast Cancer

open access: yesMicromachines, 2023
The most important technique for exposing early-stage breast cancer is terahertz imaging. It aids in lowering the number of breast cancer-related fatalities and enhancing the quality of life.
Anupma Gupta   +4 more
doaj   +1 more source

Expanding the Repertoire of Natural Product-Inspired Ring Pairs for Molecular Recognition of DNA [PDF]

open access: yes, 2011
A furan amino acid, inspired by the recently discovered proximicin natural products, was incorporated into the scaffold of a DNA-binding hairpin polyamide.
Arcamone F.   +32 more
core   +3 more sources

Technological optimization and fatigue evaluation of carbon reinforced polyamide 3D printed gears

open access: yesHeliyon
Nowadays, this is even more challenging while additive manufacturing technology is used for prototyping, as well as the production of gearing systems.
Matija Hriberšek   +5 more
doaj   +1 more source

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