Results 81 to 90 of about 140,782 (296)

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Analysis of effective thermal conductivity for mineral cast material structures with varying epoxy content using TPS method

open access: yesMaterials Research, 2013
Conventionally, cast iron is the material used for high speed machine tool structures. As an alternate material to improve the structural properties, composite materials are being used, which are known to exhibit excellent thermal and mechanical ...
A. Selvakumar, P. V. Mohanram
doaj  

Preparation and Properties of Composite Shape-Stabilized Phase Change Material for Asphalt Mixture

open access: yes, 2011
Mixing the phase change material (PCM) into asphalt mixture could change the thermo physical properties of asphalt mixture. Asphalt mixture with PCM can remain in the ideal working temperature range for a relatively long time.
Da Long Wang   +3 more
core   +1 more source

New thermal insulation fiberboards from cake generated during biorefinery of sunflower whole plant in a twin-screw extruder [PDF]

open access: yes, 2014
The objective of this study was to manufacture new thermal insulation fiberboards by thermo-pressing. The starting material was a slightly deoiled cake (17.6% oil content), generated during the biorefinery of sunflower (Helianthus annuus L.) whole plant ...
Evon, Philippe   +3 more
core   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Microstructure and Mechanical Properties of Diamond–Ceramic Composites Fabricated via Reactive Spark Plasma Sintering

open access: yesCeramics
In order to prepare diamond composites with excellent mechanical properties under non-extreme conditions, in this study, a diamond–ceramic composite was successfully prepared via reactive spark plasma sintering using a diamond–Ti–Si powder mixture as the
Yunwei Shi   +5 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

A novel bioactive nano-composite: synthesis and characterisation with potential use as dental restorative material [PDF]

open access: yes, 2009
PhDIt is desirable for a dental restorative material to have bioactive and bonding properties. This study focuses on the synthesis of a covalently-linked polyurethane/nanohydroxyapatite (PU/nHA) composite and evaluates its chemical, physical, thermal ...
Khan, Abdul Samad
core   +2 more sources

Impact of Mixture Ratio on Bio-Composite Material from Bamboo and Recycled Polyethylene Terephthalate (PET)

open access: yesABUAD Journal of Engineering Research and Development
The study investigated the impact of mixture ratio on various physico-chemical and mechanical properties of a bio-composite material made from bamboo and recycled polyethylene terephthalate (PET).
Abiodun Ayodeji Ojetoye   +5 more
doaj   +1 more source

Mechanical properties of Bombyx mori silkworm silk fibre and its corresponding silk fibroin filament: A comparative study

open access: yesMaterials & Design, 2019
Bombyx mori silkworm silk fibre is recognized as a kind of natural biological composite materials. From the view of composite materials science, we carried out systematic tensile tests to study mechanical properties and their variations along the length ...
Shaoyong Chen   +4 more
doaj   +1 more source

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