Results 31 to 40 of about 617,967 (333)

Microstructure and Mechanical Properties of Mg-5Nb Metal-Metal Composite Reinforced with Nano SiC Ceramic Particles

open access: yesMetals, 2012
In this work, a Mg-5Nb metal–metal composite was reinforced with nano SiC (SiCn) ceramic reinforcement of varying volume fractions, using the disintegrated melt deposition technique.
Manoj Gupta   +4 more
doaj   +1 more source

The Role of the Vascular Endothelial Growth Factor (VEGF) Signaling in Biomineralization of the Oyster Crassostrea gigas

open access: yesFrontiers in Marine Science, 2018
Vascular endothelial growth factor (VEGF) and vascular endothelial growth factor receptor (VEGFR) play a role in early development, organogenesis, and regeneration, as well as biomineralization of invertebrates.
Anna V. Ivanina   +7 more
doaj   +1 more source

Effect of nanoparticles on color stability and mechanical and biological properties of maxillofacial silicone elastomer: A systematic review

open access: yesThe Journal of Indian Prosthodontic Society, 2020
Aim: The aim of this systematic review was to evaluate the effect of addition of various nanoparticles into maxillofacial silicone elastomer on color stability and mechanical and biological properties of the silicone elastomer.
Nithin Kumar Sonnahalli   +1 more
doaj   +1 more source

Design of Wear-Resistant Diecast AlSi9Cu3(Fe) Alloys for High-Temperature Components

open access: yesMetals, 2019
Type AlSi9Cu3(Fe) alloy has been modified by alloying with iron, manganese, and chromium elements to develop wear-resistant diecast hypoeutectic Al−Si−Cu alloys that can be applied for high-temperature applications.
Giulio Timelli   +3 more
doaj   +1 more source

Improved Hardness of Approximating Chromatic Number [PDF]

open access: yes, 2013
We prove that for sufficiently large K, it is NP-hard to color K-colorable graphs with less than 2^{K^{1/3}} colors. This improves the previous result of K versus K^{O(log K)} in Khot [14]
Huang, Sangxia
core   +1 more source

Cell‐free DNA aneuploidy score as a dynamic early response marker in prostate cancer

open access: yesMolecular Oncology, EarlyView.
mFast‐SeqS‐based genome‐wide aneuploidy scores are concordant with aneuploidy scores obtained by whole genome sequencing from tumor tissue and can predict response to ARSI treatment at baseline and, at an early time point, to ARSI and taxanes. This assay can be easily performed at low cost and requires little input of cfDNA. Cell‐free circulating tumor
Khrystany T. Isebia   +17 more
wiley   +1 more source

The influence of the vanadium content on the toughness and hardness of wear resistant high-alloyed Cr-Mo steel [PDF]

open access: yesFME Transactions, 2017
Characteristics of air hardening steel are high hardness and low impact toughness. In order to increase the impact toughness while retaining high hardness value, studies were performed.
Todić Aleksandar   +5 more
doaj  

Sintering studies on iron-carbon-copper compacts [PDF]

open access: yesScience of Sintering, 2016
Sintered Iron-Carbon-Copper parts are among the most widely used powder metallurgy product in automobile. In this paper, studies have been carried out to find out the sintering characteristics of iron-carbon-copper compacts when sintered in ...
Perianayagam Philomen-D-Anand Raj   +2 more
doaj   +1 more source

Study of hot hardness characteristics of tool steels [PDF]

open access: yes, 1972
Hardness measurements of tool steel materials in electric furnace at elevated temperatures and low oxygen environment are discussed. Development of equation to predict short term hardness as function of intial room temperature hardness of steel is ...
Chevalier, J. L.   +2 more
core   +1 more source

Hardness of Demineralized Enamel with the Application of Toothpaste Containing Green Tea Extract [PDF]

open access: yes, 2015
The aim of this study was to analyze the influence of toothpastes with or without green tea extract on the enamel hardness. Human teeth were used as specimens and surface enamel demineralization by soaking in 1% citric acid.
Indrani, D. J. (Decky)   +2 more
core   +2 more sources

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