نتایج جستجو برای: element concentration

تعداد نتایج: 578376  

Journal: :Annals of agricultural and environmental medicine : AAEM 2014
Ewa Nogaj Jerzy Kwapulinski Maciej Misiołek Wojciech Golusiński Jolanta Kowol Danuta Wiechuła

Power plant dust is believed to be the main source of the increased presence of the element beryllium in the environment which has been detected in the atmospheric air, surface waters, groundwater, soil, food, and cigarette smoke. In humans, beryllium absorption occurs mainly via the respiratory system. The pharyngeal tonsils are located on the roof of the nasopharynx and are in direct contact ...

Journal: :Journal of Analytical Atomic Spectrometry 2023

Three-dimensional calibration surfaces, along with downhole fractionation corrections, can provide improved accuracy for trace element concentration analysis by LA-ICP-MS.

Journal: :Cell metabolism 2007
Barton Wicksteed Yuji Uchizono Cristina Alarcon Jill F McCuaig Anath Shalev Christopher J Rhodes

Insulin production in pancreatic beta cells is predominantly regulated through glucose control of proinsulin translation. Previously, this was shown to require sequences within the untranslated regions (UTRs) of the preproinsulin (ppI) mRNA. Here, those sequences were found to be sufficient for specific glucose-regulated proinsulin translation. Furthermore, an element 40-48 bp from the 5' end o...

HA. Jamali, K. Dindarloo, R. Jabbari,

Introduction: Fluoride counts an essential element for human health. Therefore, both low and excessive concentrations of that element in drinking water may cause health problems for the consumers. The present study aims to optimize fluoride base in drinking water using Alum response surface methodology. Methods: The present study is an analytical research which uses surface response method b...

Journal: :global journal of environmental science and management 0
a. chaab department of soil science, college of agriculture, shahid chamran university of ahvaz, ahvaz, iran a.a. moezzi department of soil science, college of agriculture, shahid chamran university of ahvaz, ahvaz, iran g.a. sayyad department of soil science, college of agriculture, shahid chamran university of ahvaz, ahvaz, iran m. chorom department of soil science, college of agriculture, shahid chamran university of ahvaz, ahvaz, iran

the effect of compost and humic acid in mobility and concentration of cadmium and chromium in contaminated soil were investigated. experiment was carried out with three levels of soil cadmium and chromium and two organic matters (compost and humic acid). the study was performed in a randomized complete block design with 3 replicates. results indicated that application of organic substances enha...

Journal: :Applied Mathematics and Computation 2002
Tony W. H. Sheu Y. H. Chen

In this paper, we focus on the development of a finite element model for predicting the contaminant concentration governed by the advective–dispersive equation. In this study, we take into account the first-order degradation of the contaminant to realistically model the transport phenomenon in groundwater. To solve the resulting unsteady advection–diffusion equation with production, a finite el...

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