Results 51 to 60 of about 3,740,437 (360)

The testing of insulating materials

open access: yesMaterials & Design, 1989
Abstract ERA Technology has devised a set of standardised tests which can be used to assess the performance of materials for different aspects of electrical low voltage switching applications. Different moulding materials were studied in conjunction with one contact materials, with the primary objective of investigating the effect of the moulding ...
D Charman, RA Simmonds
openaire   +2 more sources

Social context prevents heat hormetic effects against mutagens during fish development

open access: yesFEBS Letters, EarlyView.
This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere   +5 more
wiley   +1 more source

Impact perforation testing of stab-resistant armour materials [PDF]

open access: yes, 1995
This paper describes the development of a method for the investigation and comparison of materials for use in stab resistant body armour. A number of polymer composite panels of different thicknesses and construction have been tested.
Angood, C.   +3 more
core  

Peculiarities associated with testing polyetheretherketone (PEEK) in a model rolling contact [PDF]

open access: yes, 2015
Commonly used four-ball testing configuration when used to investigate rolling contact behavior of polyetheretherketone (PEEK) produced some unexpected peculiarities, namely direct contact between ceramic balls.
Gawarkiewicz, R, Stolarski, TA
core   +1 more source

An Accelerated Aging Test to Compare the Thermal Stability over Time between the Mint Lift® and the MEDI ROPE

open access: yesApplied Sciences, 2022
It is allegedly known that the thermal stability of the Mint Lift® (the Mint Lift® 17 and the Mint Lift® Fine; HansBiomed Co., Ltd., Seoul, Korea) over time might be lower as compared with thread-lifts processed through ultrasonic molding technology ...
Jung Heum Park   +6 more
doaj   +1 more source

Protonophore activity of short‐chain fatty acids induces their intracellular accumulation and acidification

open access: yesFEBS Letters, EarlyView.
The protonated form of butyrate, as well as other short‐chain fatty acids (SCFAs), is membrane permeable. In acidic extracellular environments, this can lead to intracellular accumulation of SCFAs and cytosolic acidification. This phenomenon will be particularly relevant in acidic environments such as the large intestine or tumor microenvironments ...
Muwei Jiang   +2 more
wiley   +1 more source

Testing of hydrogen sensor based on organic materials [PDF]

open access: yes, 2011
Práce je zaměřena na problematiku bezpečnostních vodíkových senzorů. Základní principy a teorie vodíkových senzorů je rozebrána v první části práce.
Petrová, Lenka
core  

Squaraine Planar-Heterojunction Solar Cells

open access: yesInternational Journal of Photoenergy, 2009
The photovoltaic performance of squaraine-based organic solar cells is investigated. Two squaraine derivatives with extraordinarily high extinction coefficients are used as electron donors in bilayer heterojunctions with fullerene C60 as electron ...
Bin Fan   +6 more
doaj   +1 more source

Modifications in FLAP's second cytosolic loop influence 5‐LOX interaction, inhibitor binding, and leukotriene formation

open access: yesFEBS Letters, EarlyView.
The enzyme 5‐lipoxygenase (5‐LOX) catalyzes the first step in the biosynthesis of leukotrienes (LTs) involved in inflammatory pathophysiology. After cellular stimulation, 5‐LOX translocates to the nucleus, interacting with the 5‐LOX‐activating protein (FLAP) to form LTA4 from arachidonic acid (AA).
Erik Romp   +5 more
wiley   +1 more source

Testing device subjects elastic materials to biaxial deformations [PDF]

open access: yes, 1965
Testing device stretches elastic materials biaxially over large deformation ranges and varies strain ratios in two perpendicular directions. The device is used in conjunction with a tensile testing machine, which holds the specimen and permits control ...
Becker, G. W.
core   +1 more source

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