Results 31 to 40 of about 1,483,235 (290)

Micro-hardness variation of micro-phases during spheroidisation of AISI4340 steel

open access: yesCogent Engineering, 2021
AISI4340 steel is the medium carbon low-alloy steel has got excellent prominence as a construction material. This steel is spheroidised on heating to the intercritical temperature range by different time intervals with the objective of increasing the ...
Harisha S R   +4 more
doaj   +1 more source

Surface Modification of Red Brass Alloy by Using Laser Technique [PDF]

open access: yesEngineering and Technology Journal, 2016
Laser shock processing technique was performed on red brass alloy type C83300 specimens for the purpose ofstudy its effect on the mechanical properties such as micro-hardness and surface roughness. LSP experimental setup system involved Q-switched Nd:YaG
Abdulhadi Kadhim   +2 more
doaj   +1 more source

Influence of laser and laser-ultrasonic treatments on the durability varying of steel friction surfaces

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
The damage of the sliding friction surfaces of constructional steel 40Kh over the stainless steel 12Kh18N10T is researched. From the comparison of the damage processes for steel 40Kh in its initial annealed state, after the laser and laser-ultrasonic ...
G. D. Gureev, D. M. Gureev
doaj   +1 more source

On Some Mesurements of Hardness of Metals by Micro-Hardness Tester

open access: yesThe Journal of the Japan Institute of Metals, 1949
Recently, micro-hardness testing is being employed in the research of metals. The authors described, in the previous report, a handy micro-hardness tester tentatively made by us In this report some experiments by the tester are given. The results obtaind are as follows:- (1) This handy micro-hardness tester is easily constructed and easy to handle, and
Okada, M.   +3 more
openaire   +2 more sources

Hardness Evaluation of Porous Hydroxyapatite Coating [PDF]

open access: yes, 2007
The extensive use of appropriate coatings to improve wear resistance, friction coefficient, electrical properties, corrosion resistance and biomedical application has stimulated a growing interest in their mechanical properties and especially hardness ...
A. Iost   +7 more
core   +1 more source

10 Effect of pulse current on micro-hardness and wear performance of cold-rolled T2 copper sheet

open access: yesMaterials Research Express, 2020
The effect of pulse current assisted rolling on the micro-hardness and wear properties of T2 copper sheet was studied. The micro-hardness of copper sheet with pulse current assisted rolling was measured, and the hardness values of the copper sheet at ...
Hao Song   +5 more
doaj   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

open access: yesFEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

TRIBOLOGICAL CONSIDERATIONS ON RWL 34 TOOLS STEEL [PDF]

open access: yesProceedings on Engineering Sciences, 2019
The paper presents an analyze of the tribological testing on the RWL 34 tools steels in diffrent stages: untreated, hardened and hardened and tempered. The wear tests were made by ball on disk, which is an oscilating sliding method.
Mihai DEMIAN   +2 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

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