Results 141 to 150 of about 80,305 (287)

Portable X‐Ray Fluorescence in the Assessment of Zinc Along Grizzly Bear Hair

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT As a biomarker of past uptake of zinc, hair presents an interesting option since its growth can provide a stored record over time. This study investigates the distribution of zinc in hairs gathered from a series of grizzly bears (Ursus arctos horribilis).
David E. B. Fleming   +2 more
wiley   +1 more source

PM2.5 Chemical Composition and Geographic Origin of Air Masses in Mabopane, South Africa

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT Air pollution is a major global threat to health. The study aimed to analyze the chemical composition of PM2.5 in Mabopane, South Africa, and to identify the contribution of transported particulate pollution sources using backward air transport cluster analysis.
Mandla Bhuda   +4 more
wiley   +1 more source

Non‐Destructive Inspection of TCPs Using Pulse‐Echo Ultrasound and X‐Ray Microcomputed Tomography Techniques

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT Thermoplastic composite pipes (TCPs) have potential applications in offshore oil and gas industries because of their strength, lack of corrosion, and flexibility. Designed for fluid transportation in high‐pressure and high‐temperature environments, manufacturing defects and operational loads can compromise their performance.
Marcella Grosso Lima   +10 more
wiley   +1 more source

Síntesis emergética como herramienta de comparación entre dos sistemas de producción agrícola argentinos : chaco seco y pampa ondulada [PDF]

open access: yes, 2016
El sistema agropecuario en Argentina fue uno de los principales motores de transformación de los ecosistemas nativos, constituyéndose en una importante actividad económica.
Totino, Mariana
core   +2 more sources

Determining Diffusion Coefficients in Polymer Electrolyte Membranes With Lab Based Micro X‐Ray Fluorescence Analysis: A Proof of Concept

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT The diffusion of metal ions in polymer electrolyte membranes is an important parameter for aging and capacity loss in electrochemical cells. Here, the diffusion coefficients of vanadium ions in Nafion membranes are studied. These are important to describe transportation of the ions through the membrane separator in vanadium redox flow ...
Frithjof Mähler   +2 more
wiley   +1 more source

Investigation of Micro‐Nutrient Elemental Distribution in a Black Wheat (Triticum aestivum L.) Grain Using Synchrotron Assisted Microprobe X‐Ray Fluorescence Analysis at Indus‐2

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT Spatial localization of various essential dietary elements present in a black wheat (Triticum aestivum L.) grain has been investigated using synchrotron assisted micro X‐ray fluorescence measurements at BL‐16 beamline of Indus‐2 synchrotron facility. The results showed that most of the important dietary minerals like calcium (Ca), potassium (K)
Ajay Khooha   +4 more
wiley   +1 more source

Análisis de factibilidad de un proyecto de autogeneración eléctrica fotovoltaica en Colombia para áreas productivas menores de 10.000 m² [PDF]

open access: yes, 2017
La energía solar fotovoltaica es reconocida a nivel mundial como una fuente renovable, con bajo impacto ambiental y con costos menores comparados con otras fuentes de energía -- A nivel de Colombia, las condiciones geográficas son favorables para esta ...
Carmona Valencia, Hernán   +1 more
core  

Trace Element Analysis in Human Neuroblastoma Cell Spheroids Supplemented With ZnCl2 by Micro‐XRF

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT Neuroblastoma, the most common extracranial solid tumor of childhood, is responsible for ~10% of pediatric cancer deaths and has high potential for metastasis. Metals are extremely important in biological processes, and changes in their levels have been correlated with the development of cancerous growth.
J. E. P. Rosa   +10 more
wiley   +1 more source

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