Results 21 to 30 of about 106,789 (300)

Archaeometric Studies on Neolithic Bullet-Shaped Cores from East Chia Sabz, Seymareh, Luristan [PDF]

open access: yesIranian Journal of Archaeological Studies, 2016
The East Chia Sabz site is located on the bank of the Seymareh River in the middle of the Zagros Mountain chain. The site is among the few examples of the acramic Neolithic sites of the 8th millennium B.C.
Nima Nezafati, Morteza Hessari
doaj   +1 more source

Mineralogical characterization of the traditional geopharmaceutical ithmid by XRF and XRD [PDF]

open access: yesTrends in Pharmaceutical Sciences, 2021
Geopharmaceuticals, specifically minerals were used to treat various diseases from antiquity. Ithmid or kohl stone is one of the most-applied geopharmaceuticals in the Middle East, Africa, and South Asia.
Marzieh Rashedinia   +2 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

INVESTIGATION OF HEAVY METAL CONCENTRATIONS IN THE GULF OF IZMIT (MARMARA SEA) ALTINOVA SHIPYARD REGION

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2022
In this study, heavy metal concentrations (Ca, Mg, Hg, As, Sb, Ag, Al, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, Zn, Ti, Th, U, Mo, Cd) amounts were measured by examining marine sediment samples obtained from the coasts of the Izmit Bay Altınova shipyards region ...
Kübra BAYRAK   +3 more
doaj   +1 more source

Determined the parameters effected on sensitivity and lower limit detection of XRF–WDS for different metals particles suspended in engine oil. [PDF]

open access: yesKirkuk Journal of Science, 2009
In this work Different weight of pure Copper,Nickel,Cobalt and Iron fine powders were blended carefully with engine Oil.X-ray fluorescence system was operated at 30KV and 17mA,the XRF intensities of Kα lines for all samples were measured at the peak and
Selma M. H. Al-Jawad
doaj   +1 more source

Temporal Profiles and Spectral Lags of XRF 060218 [PDF]

open access: yes, 2006
The spectral and temporal properties of the non-thermal emission ofthe nearby XRF 060218 in 0.3-150 keV band are studied. We show that both the spectral energy distribution and the light curve properties suggest the same origin of the non-thermal ...
Dai, Z. G.   +7 more
core   +2 more sources

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

Quick Analysis of Organic Amendments via Portable X-ray Fluorescence Spectrometry [PDF]

open access: yes, 2019
The determination of heavy metals in soils and organic amendments, such as compost, manure, biofertilizer, and sludge, generally involves the digestion of samples with aqua regia, and the determination of those in the solution using various techniques ...
Ajmal Poley, Fátima   +4 more
core   +1 more source

How does iron interact with sporopollenin exine capsules? An X-ray absorption study including microfocus XANES and XRF imaging [PDF]

open access: yes, 2014
Sporopollenin exine capsules (SECs) derived from plant spores and pollen grains have been proposed as adsorption, remediation and drug delivery agents. Despite many studies there is scant structural data available.
Archibald, Stephen J.   +9 more
core   +1 more source

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

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