Results 41 to 50 of about 110,257 (339)

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

Optimizing the Control Level Factors of an Ultrasonic Plastic Welding Machine Affecting the Durability of the Knots of Trawl Nets Using the Taguchi Experimental Method

open access: yesApplied Sciences, 2023
Ultrasonic welding is a high-frequency method of welding that uses mechanical energy to generate heat. This is a clean welding method and very suitable for plastic welding.
Nghia-Danh Nguyen, Shyh-Chour Huang
doaj   +1 more source

Cyclic pyrrole-imidazole polyamides targeted to the androgen response element [PDF]

open access: yes, 2009
Hairpin pyrrole−imidazole (Py-Im) polyamides are a class of cell-permeable DNA-binding small molecules that can disrupt transcription factor−DNA binding and regulate endogenous gene expression.
Chenoweth, David M.   +4 more
core   +2 more sources

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

Unanticipated differences between α- and γ-diaminobutyric acid-linked hairpin polyamide-alkylator conjugates [PDF]

open access: yes, 2006
Hairpin polyamide–chlorambucil conjugates containing an {alpha}-diaminobutyric acid ({alpha}-DABA) turn moiety are compared to their constitutional isomers containing the well-characterized {gamma}-DABA turn.
Chou, C. James   +4 more
core   +4 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

Enhancing the cellular uptake of Py–Im polyamides through next-generation aryl turns [PDF]

open access: yes, 2012
Pyrrole–imidazole (Py–Im) hairpin polyamides are a class of programmable, sequence-specific DNA binding oligomers capable of disrupting protein–DNA interactions and modulating gene expression in living cells.
Baird   +54 more
core   +2 more sources

3D‐Printed Architected Material for the Generation of Foam‐Based Protective Equipment

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates 3D‐printed architected structures as alternatives to traditional foams in protective gear. It focuses on customizing impact strength and damping through design and manufacturing integration. Testing shows these structures outperform conventional foams, offering enhanced customizability, lower weight, and tunable performance ...
Ali Zolfagharian   +5 more
wiley   +1 more source

Effect of temperature on the fiber/matrix interfacial strength of carbon fiber reinforced polyamide model composites

open access: yesMechanical Engineering Journal, 2016
Carbon Fiber Reinforced Thermoplastics (CFRTP) have attracted attention in the automotive industry for their productivity and high specific strength and modulus.
Kazuto TANAKA   +4 more
doaj   +1 more source

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