Results 41 to 50 of about 736,335 (166)

PyXRD v0.6.7: a free and open-source program to quantify disordered phyllosilicates using multi-specimen X-ray diffraction profile fitting [PDF]

open access: yesGeoscientific Model Development, 2016
This paper presents a free and open-source program called PyXRD (short for Python X-ray diffraction) to improve the quantification of complex, poly-phasic mixed-layer phyllosilicate assemblages.
M. Dumon, E. Van Ranst
doaj   +1 more source

Study of Biological Pigments by Single Specimen Derivative Spectrophotometry

open access: yesBiophysical Journal, 1970
The single specimen derivative (SSD) method provides an absolute absorption spectrum of a substance in the absence of a suitable reference. Both a reference and a measuring monochromatic beam pass through a single sample, and the specimen itself acts as its own reference. The two monochromatic beams maintain a fixed wavelength difference upon scanning,
openaire   +2 more sources

Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle Specimen

open access: yesApplied Sciences, 2019
The objective of this paper is to investigate the complete process of dynamic crack propagation in brittle materials under different loading rates. By using Improved Single Cleavage Semi-Circle (ISCSC) specimens and Split Hopkinson Pressure Bar equipment,
Fei Wang   +5 more
doaj   +1 more source

A Simple Single Specimen Method for Measuring the Fracture Surface Energy of Rubber Materials

open access: yesEngineering Transactions, 2015
In this investigation, particular attention is paid to the generalized theory of fracture mechanics developed by Andrews and based on the spatial strain energy density distribution W in the case of an infinite lamina.
N. Ait Hocine, M. Na1t Abdelaziz
doaj   +1 more source

First record of a reticulated toadfish, Arothron reticularis (Tetraodontiformes: Tetraodontidae), in Korea

open access: yesFisheries and Aquatic Sciences, 2020
A single specimen of Arothron reticularis (398 mm in total length), belonging to the family Tetraodontidae, was collected in the coastal waters off Hansan island using a set net in May 2019.
Chung-Bae Kang   +4 more
doaj   +1 more source

Comparison between experimental and analytical behaviour of the steel – concrete composite pushout specimen with stud and channel shear connector

open access: yesJournal of Materials and Engineering Structures, 2023
To investigate the behaviour of composite action with various shear connectors, push-out tests were performed for eight specimens. Test parameters includes are type of shear connector (headed stud connector and channel connector), number of connectors ...
P. SANGEETHA   +2 more
doaj  

Molecular dynamics simulation of self-rotation effects on ultra-precision polishing of single-crystal copper

open access: yesAIP Advances, 2013
Understanding the behaviors of the material removal mechanism of ultra-precision polishing process has been a critical issue of generating well-formed surface.
Yihan Yang   +5 more
doaj   +1 more source

First record of the genus Atrichops Verrall, 1909 in Hungary (Diptera: Athericidae) [PDF]

open access: yesOpuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis, 2009
This paper reports on the first known larva of Atrichops crassipes (Meigen, 1820) from Hungary. The single specimen was caught with flushing of stones during a year-long monthly sampling in the Morgó Stream, Börzsöny Mts. Characterisation of the sampling
Murányi, D., Tarjányi, N., Schöll, K.
doaj  

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