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Showing 1 to 20 of 22 for “"elemental concentration"”.
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THE ANALYSIS OF SAMPLES WITH COMPLEX MATRICES FOR ELEMENTAL CONCENTRATION
… In the foodstuff and pharmaceutical industry, elemental exposures are often present in the form of contamination and must be monitored for public safety due to the potential toxic effects they can have upon consumers. The following work shows a method to rapidly analyze foodstuffs and …
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Association Mapping for Elemental Concentration Resulting from Vegetative Stage Soil Waterlogging Stress in Wheat (Triticum aestivum L.)
… of aluminum, iron and sodium, indicating likely elemental toxicity. Cultivars ‘Jamestown’ and ‘USG3555’ were found to be the most tolerant to WL, as these prevented large reductions in spikes m-2, kernel weight per spike, kernel number per spike, thousand kernel weight and thus total grain …
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Characterization and analysis of the ambient aerosol species in the Shenandoah National Park and Manassas, Virginia regions
… of size distribution, composition and elemental concentration of the aerosol species in the Shenandoah National Park and Manassas, Virginia regions was investigated during a three month summertime period. The relationships between the above mentioned parameters along with prevalent …
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DLC Thin Film Assisted ZnO Nanowires Growth
… in length. EDS maps by SEM and TEM showed the elemental concentration of the Zn, O and C in NWs. From all the investigations, we established a model of growth mechanism for ZnO NWs growth on DLC film.
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RNA-SEQ driven analysis of seasonal gene expression variation in miscanthus �� giganteus
… with RT-qPCR and compared to amino acid and elemental concentration profiles; as a result, many seasonal changes in gene expression corresponding to the growth and development of M. × giganteus have been documented in order to better define the traits that make this crop such an outstanding …
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Radioanalytical multi-elemental analysis : new methodology and archaeometric applications
… to determine titanium, barium, and arsenic concentrations in obsidian using epithermal neutron activation. INAA, when coupled with rigorous statistical methods, including principal component analysis and clustering techniques, can provide the precision and confidence needed to accurately …
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Trace Level Impurity Quantitation and the Reduction of Calibration Uncertainty for Secondary Ion Mass Spectrometry Analysis of Niobium Superconducting Radio Frequency Materials
… of SRF cavity characterization that details elemental concentration profiles as a function of depth into the niobium surface with submicron resolution. SIMS has been widely used by the semiconductor industry for decades but has found less application in other fields due to the difficulty to …
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A Parametric Study on the Effects of External Stimuli on the Aqueous Dissolution of Lithium Disilicate Glass
… Flow dissolution showed similar trends in concentration and different trends for the total normalized mass loss (TNL) to previously published research on more complex glasses. The elemental concentration initially increased before reaching a peak and decreasing to steady state. This peak …
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Electrokinetic-assisted phytoremediation of heavy metal in riverbank soil
… the difference in heavy metal composition concentration of riverbank soil and the change of soil pH between pre and post phytoremediation and EK assisted phytoremediation treatment. The selected phytoremediation plant is Dieffenbachia ‘Tropic Rain”. The phytoremediation plant treatment was …
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An in vitro assessment of the effects of feed-grade trace minerals on commercial phytase activity
… were instigated by trace mineral source, elemental concentration and phytase mode of action. Additional studies assessed the effects of simulated mineral mixes containing sequentially added copper, iron, zinc, and manganese. Similar to previous findings, exposure to ITM mixes resulted in …
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Environmental geochemistry of soils and stream sediments from Anka and Birnin-Gwari artisanal gold mining areas, NW Nigeria
… mineralization. XRF determination of total elemental concentration was carried out, along with sequential extraction procedures (SEPs) and in vitro bioaccessibility tests using ICP-AES. The results show that the soils in both the Anka and Birnin-Gwari area are highly enriched in silica, …
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Biomonitoraggio umano: effetti sub-clinici da Piombo e Cadmio sull’accrescimento
… variables are hair lead and cadmium concentrations (PbH, CdH), proxy of socioeconomic status (SES), proxy of nutritional status as upper arm muscle area (UMA), upper arm fat area (UFA), body mass index (BMI) and Σ 5 skinfolds. In order to detect possible associations between genetic …
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Petrogenesis of lavas from Volcano Azufre, Northern Chile: evidence for crustal input
… both have had a major effect on erupting lavas. Elemental concentration and isotope data are used here to examine the role that the APMB has had on the evolution of Azufre. This data set is also compared to those of previously studied volcanoes of the APVC to further provide understanding as to …
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Comparative Geochemical Analysis of Ordovician and Mississippian Cherts in Relation to the Northern Arkansas and the Tri-State Mississippi Valley-type Ore Districts
… and Hatton Tuff appear to be related through elemental concentration analyses, confirming volcanic ash contributions. Other studies cited herein suggest that metasomatic fluid pulses produced by Reelfoot Rift tectonics may have contributed genetically related, metalliferous fluids to these …
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Tracing past and present Arctic geochemical cycling and its link to climate change using neodymium isotopes
… change, containing arguably the largest concentration of critical components in the Earth’s climate system. In the past, the Arctic region experienced abrupt changes in both climate and ocean circulation. Neodymium isotope ratios (εNd) have been used extensively as a tracer of continental …
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A Comparison Between Elemental Concentrations and Elemental Percentages as Input Data for Target Transformation Factor Analysis
Made available in DSpace on 2017-07-06T18:56:21Z (GMT). No. of bitstreams: 3 Shih_Yung-Ho_MS.pdf: 25457266 bytes, checksum: e5aa6846a979fd48a1853e8a42fd27b7 (MD5) Shih_Yung-Ho_MS_ABS.pdf: 542943 bytes, checksum: d8c3a56076be214fb50285b431673036 (MD5) license.txt: 4813 bytes, checksum: …
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A survey of 24 elements in North Dakota lignite (Fort Union Group, Paleocene) and possible geologic implications
… (lCAP) Spectrometer. Generally Cd and high concentrations of Na occurred at the top of a seam. Concentrations of V and Zn were usually higher at the top and bottom of a seam, whereas other elements were equally dispersed throughout the seam. The position of high concentrations in a seam …
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Genetic improvement of aphid resistance, protein, and elemental composition in soybean
… nutrients. To produce crops with increased concentration of beneficial nutrients and fewer toxic metals, one must have an understanding of the genetic control of mineral accumulation in plant tissue which can be studied through ionomic analysis. Therefore, the objective of this study was to …
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Environmental transfer of radionuclides in a Sub-Saharan Africa setting
… of literature on radionuclide and stable element concentrations in SSA species (wildlife and agricultural food crops) and associated environmental media (soil, water, sediment) was conducted. Elemental concentration data were compiled for marine, freshwater and terrestrial ecosystems and these …
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Low-dose imaging of liver diseases through neutron stimulated emission computed tomography: Simulations in GEANT4
… with the ability to locate and quantify elemental concentration in a tissue sample. Previous studies have shown that NSECT has the ability to differentiate between benign and malignant tissue and diagnose liver iron overload while using a neutron beam tomographic acquisition protocol …
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