Results 101 to 110 of about 45,249 (286)

Control mechanism of short-term fertilization with cattle manure on the release characteristics of soil colloids in farmland: grain size and physicochemical properties

Environmental Sciences Europe
Background Understanding the release characteristics of soil colloids is a prerequisite for studying the co-transport of colloids and pollutants in subsurface environment.
Xiaoming Song, Zeyu Chen, Qing Zhang, Zhipeng Zhang, Yujuan Wen   +4 more
doaj   +1 more source

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

X-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, Ethan D. W. Briand, Jennie R. Christensen   +2 more
wiley   +1 more source

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

X-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, Peter Molnár, Johan Boman, Joyce Shirinde, Janine Wichmann   +4 more
wiley   +1 more source

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

X-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, Ighor B. C. de Paula, Raquel Marques Cautivo, Cesar Giron Camerini, Marysilvia F. da Costa, Hector G. Kotik, Celio A. Costa, Alessandra S. Machado, Davi F. Oliveira, Ricardo T. Lopes, Gabriela Ribeiro Pereira   +10 more
wiley   +1 more source

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

X-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, Sven Hampel, Ursula E. A. Fittschen   +2 more
wiley   +1 more source

Maximizing the value of liquid products and minimizing carbon loss in hydrothermal processing of biomass: an evolution from carbonization to humification

Biochar
Hydrothermal carbonization (HTC) converts wet biomass into hydrochar and a process liquid, but aromatic compounds in the products have been reported as a roadblock for soil applications as they can inhibit germination, plant growth, and soil microbial ...
Nader Marzban, Judy A. Libra, Vera Susanne Rotter, Christiane Herrmann, Kyoung S. Ro, Svitlana Filonenko, Thomas Hoffmann, Markus Antonietti   +7 more
doaj   +1 more source

Heads and Tails: Molecular Imagination and the Lipid Bilayer, 1917–1941 [PDF]

, 2018
Today, the lipid bilayer structure is nearly ubiquitous, taken for granted in even the most rudimentary introductions to cell biology. Yet the image of the lipid bilayer, built out of lipids with heads and tails, went from having obscure origins deep in ...
Liu, Daniel
core  

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

X-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, Ayushi Trivedi, M. K. Tiwari, Devesh Kumar Avasthi, Ajit Kumar Singh   +4 more
wiley   +1 more source

A 1-D modelling of streaming potential dependence on water content during drainage experiment in sand

, 2012
The understanding of electrokinetics for unsaturated conditions is crucial for numerous of geophysical data interpretation. Nevertheless, the behaviour of the streaming potential coefficient C as a function of the water saturation Sw is still discussed ...
Allègre, Archie, Bordes, Bordes, Brooks, Darnet, Darnet, Davis, Doussan, Doussan, Dupuis, F. Lehmann, Finizola, Finizola, Gardner, Gibert, Glover, Glover, Guichet, Guichet, Hayek, Henry, Ishido, Jaafar, Jackson, Jouniaux, Jouniaux, Jouniaux, L. Jouniaux, Lehmann, Linde, Lorne, Maineult, Maineult, Maineult, Mauri, Mualem, Naudet, Onizawa, Onsager, Overbeek, P. Ackerer, P. Sailhac, Perrier, Pinder, Pozzi, Press, Pride, Pride, Revil, Revil, Richards, Sailhac, Saracco, Saunders, Sheffer, Thony, Tosha, V. Allègre, van Genuchten, Vinogradov   +60 more
core   +3 more sources

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

X-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, R. G. Leitão, G. C. Ferreira, C. Palmero, E. G. Oliveira‐Barros, M. A. Oliveira, C. G. L. Canellas, L. E. Nasciutti, D. F. Olivera, R. T. Lopes, M. J. Anjos   +10 more
wiley   +1 more source