Results 31 to 40 of about 359,439 (295)

Bone Material Properties of Human Phalanges Using Vickers Indentation

open access: yesOrthopaedic Surgery, 2019
Objective To investigate the microhardness distribution throughout the human hand phalanges using the Vickers method, which can be used to directly evaluate the bone mechanical properties at tissue level and provide an alternative means to investigate ...
Bing Yin   +5 more
doaj   +1 more source

Backgammon Is Hard

open access: yes, 2021
We study the computational complexity of the popular board game backgammon. We show that deciding whether a player can win from a given board configuration is NP-Hard, PSPACE-Hard, and EXPTIME-Hard under different settings of known and unknown opponents' strategies and dice rolls. Our work answers an open question posed by Erik Demaine in 2001.
openaire   +2 more sources

Modeling the composite hardness of multilayer coated systems [PDF]

open access: yes, 2015
The change in the composite hardness with penetration depth derived from nanoindentation tests conducted on coated systems, which involve the deposition of multilayer coatings, in general exhibits a complex shape, as a consequence of the sequential ...
PUCHI-CABRERA, Eli-Saul   +5 more
core   +1 more source

Degradation of polymer particle systems in agrocomplex

open access: yesResearch in Agricultural Engineering, 2013
One of the possibilities of recycling waste from blasting processes is the application of these secondary materials in polymeric matrix, where the primary material is replaced with the secondary one.
P. Valášek, M. Brožek
doaj   +1 more source

Radiation hardness qualification of PbWO4 scintillation crystals for the CMS Electromagnetic Calorimeter [PDF]

open access: yes, 2009
This is the Pre-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2010 IOPEnsuring the radiation hardness of PbWO4 crystals was one of the main priorities during the construction of the ...
V. J. Smith   +999 more
core   +1 more source

Effects of repetitive baseball pitching on muscle hardness of trunk and upper limb muscles [PDF]

open access: yes, 2020
The purpose of this study was to investigate the effect of repetitive baseball pitching on the hardness of trunk and upper limb muscles. Six healthy male college students participated in this study.
1000070350444   +5 more
core   +1 more source

Effect of sedimentation on the final hardness of polymeric particle composites

open access: yesResearch in Agricultural Engineering, 2012
In present days composite materials are the indispensable part of many branches. They make a foray into the branch of agricultural production, where they are getting to intensive development of systems utilized e.g. at soil processing.
P. Valášek, M. Müller, A. Proshlyakov
doaj   +1 more source

Microstructural Evaluation of Inconel 718 and AISI 304L Dissimilar TIG Joints

open access: yesMetals, 2023
Dissimilar welding joints of Inconel 718 (IN718) nickel superalloy with low-carbon AISI 304L austenitic steel (SS304L) were conducted using the Tungsten Inert Gas (TIG) welding process. The present investigation focuses on the effect of different welding
Dimitra Ioannidou   +3 more
doaj   +1 more source

A comparison of models for predicting the true hardness of thin films [PDF]

open access: yes, 2012
Instrumented indentation is widely used to characterize and compare the mechanical properties of coatings. However, the interpretation of such measurements is not trivial for very thin films because the hardness value recorded is influenced by both the ...
IOST, Alain   +3 more
core   +1 more source

What is indentation hardness? [PDF]

open access: yes, 2000
Using dimensional analysis and finite element calculations, we derive simple scaling relationships for loading and unloading curve, contact depth, and hardness.
郑哲敏   +2 more
core   +1 more source

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