Results 41 to 50 of about 93,253 (280)

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Abrasion Resistance of Thermoplastic Polyurethane in Abrasion Resistance Test Using Abrasives.

open access: yesKOBUNSHI RONBUNSHU, 1992
ポリカプロラクトン, 4, 4'-ジフェニルメタンジイソシアナート, 1, 4-ブタンジオールからなる熱可塑性ポリウレタンのうち組成比の異なる2種類の試料について, 研磨材を用いた摩耗試験を行った. その結果, 硬さが小さく, 動的貯蔵弾性率 (E') の小さい試料が耐摩耗性が良好であった. また, 温度を上げた状態での摩耗試験の結果, 及び加圧下でのポリウレタンと鋼球の接触状態の観察から, E'の低い試料では, 研磨材との接触面積が大きくなり, 研磨材と一体となった層を形成するため, 耐摩耗性が向上するものと考えられた.
UEMURA, Isamu, IKEDA, Kiyoshi
openaire   +2 more sources

A study of the wear process related to twin-screw extruders [PDF]

open access: yes, 1996
Extruders are used in a wide range of process industries and high reliability is essential if cost effective manufacturing is to be maintained. A critical part of twin-screw extruders is the barrel that must withstand many different wear and corrosion ...
Grigoroudis, K.
core   +6 more sources

Abrasiveness and whitening effect of charcoal-containing whitening toothpastes in permanent teeth.

open access: yesDental Research Journal, 2021
Background: Charcoal toothpastes can whiten teeth through abrasion. The purpose of this study was to determine the level of whitening and abrasiveness of charcoal toothpastes in permanent teeth. Materials and Methods: In this in vitro study, 30 premolars
Masoud Fallahinejad Ghajari   +3 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Effect of Carbon Content on Abrasive Impact Wear Behavior of Cr-Si-Mn Low Alloy Wear Resistant Cast Steels

open access: yesFrontiers in Materials, 2019
The effects of carbon contents on microstructure evolution and mechanical properties, including hardness, impact toughness and abrasive impact wear resistance behavior, were investigated for Cr-Si-Mn low alloy cast steels.
Xiaodong Wang   +5 more
doaj   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

open access: yesFEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt   +8 more
wiley   +1 more source

Metodologia para avaliação do desgaste em ferramentas simétricas de mobilização do solo Methodology for assessment of wear rate in symmetrical soil-engaging tools

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2009
A correta avaliação e previsão do tempo de vida útil dos mecanismos que atuam no rompimento do solo, são importantes na análise de equipamentos. O desgaste deste tipo de ferramenta (ponteiras sulcadoras de semeadoras, de escarificadores e de subsoladores)
Antônio L. T. Machado   +5 more
doaj   +1 more source

Effect of Vibration on the Porosity and Strength of Instant Drink Granules

open access: yesТехника и технология пищевых производств, 2022
Instant food products are extremely popular, and food industry knows numerous ways and methods of their production. To remain competitive, an instant drink production process should be efficient and flawless.
Anatoliy M. Popov   +5 more
doaj   +1 more source

The microbiome in human skin aging

open access: yesFEBS Letters, EarlyView.
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana   +3 more
wiley   +1 more source

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