Results 31 to 40 of about 103,977 (217)

Interpretation of the Chemical Transformation of Individual Asian Dust Particles Collected on the Western Coast of Korean Peninsula

open access: yesAsian Journal of Atmospheric Environment, 2012
This paper is focused on the comprehensive and detailed interpretation for the chemical transformation of individual Asian dust (hereafter called “AD”) particles during long-range transport from source regions to receptor area.
Chang-Jin Ma, Jong-Ho Kim, Ki-Hyun Kim
doaj   +1 more source

Study of the Chemical and Pb Isotope Composition in Dirhams from the Podbolotyevo Cemetery

open access: yesНижневолжский археологический вестник, 2023
A series of silver dirhams and their imitations, originating from the burials of the Podbolotyevo burial ground left by the Muroma tribe, was studied by XRF, neutron diffraction and analysis of the isotopic composition using the Pb-Pb method.
Irina A. Saprykina   +4 more
doaj   +1 more source

Nucleosynthesis in Core-Collapse Supernovae and GRB--Metal-Poor Star Connection [PDF]

open access: yes, 2007
We review the nucleosynthesis yields of core-collapse supernovae (SNe) for various stellar masses, explosion energies, and metallicities. Comparison with the abundance patterns of metal-poor stars provides excellent opportunities to test the explosion ...
H. Umeda   +6 more
core   +2 more sources

Delayed Flashes from Counter Jets of Gamma Ray Bursts [PDF]

open access: yes, 2002
If X-ray flashes are due to the forward jet emissions from gamma ray bursts (GRBs) observed with large viewing angles, we show that a prompt emission from a counter jet should be observed as a delayed flash in the UV or optical band several hours to a ...
Ioka, Kunihito   +2 more
core   +4 more sources

Failure Trends of High-Voltage Porcelain Insulators Depending on the Constituents of the Porcelain

open access: yesApplied Sciences, 2020
The aging of porcelain insulators is responsible for the failure of power utilities. Porcelain insulators from different places in South Korea, possessing various aging times and years of installation, have been investigated to carry out lifetime ...
Simpy Sanyal   +5 more
doaj   +1 more source

Archaeological and archaeometric study of the glass finds from the ancient harbour of Classe (Ravenna- Italy): new evidence [PDF]

open access: yes, 2015
Introduction: The present study focuses on Late-Roman/Early Medieval glass found in the productive area within the ancient harbour of Classe near Ravenna, one of the most important trade centres between the 5th and 8th centuries AD of the Northern ...
Enrico, Cirelli   +5 more
core   +3 more sources

Elementary characterization of Ti metal alloys used in implant dentistry

open access: yesBrazilian Journal of Radiation Sciences, 2019
The main goal of present work is analytical characterization of standard dental implants broadly used by Brazilian dentists. An ideal biological alloy for dental implants must have very high biocompatibility, which means that such material should not ...
Catarina Alzira Montenegro Peddis Torres   +6 more
doaj   +1 more source

Spatial imaging of Zn and other elements in Huanglongbing-affected grapefruit by synchrotron-based micro X-ray fluorescence investigation [PDF]

open access: yes, 2014
Huanglongbing (HLB) is a highly destructive, fast-spreading disease of citrus, causing substantial economic losses to the citrus industry worldwide. Nutrient levels and their cellular distribution patterns in stems and leaves of grapefruit were analysed ...
Brown, PH   +6 more
core   +2 more sources

A holistic multimodal approach to the non-invasive analysis of watercolour paintings [PDF]

open access: yes, 2015
A holistic approach using non-invasive multimodal imaging and spectroscopic techniques to study the materials (pigments, drawing materials and paper) and painting techniques of watercolour paintings is presented.
Bailey, K   +6 more
core   +2 more sources

Multi-method (XRF, FTIR, TGA) analysis of ancient bricks from Karabalgasun : A preliminary study

open access: yesProceedings of the Mongolian Academy of Sciences, 2020
Ancient ceramic artefacts attracted the attention of scientists as being a chronological indicator within the archaeological context; however, they can also provide information about the tech-nology and provenance.
Saran Solongo   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy