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Academic literature on the topic 'Trace element content'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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Journal articles on the topic "Trace element content"

Stoliarenko, Viktoriia, Marina Chernova, and Olga Yakovchuk. "Monitoring of trace element content in tap water from Karachuny Reservoir, Kryvyi Rih city." E3S Web of Conferences 166 (2020): 01005. http://dx.doi.org/10.1051/e3sconf/202016601005.

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Control of the trace element content in tap water is particularly important for large industrial regions. The estimation of Cd, Pb, Cu, As, Ni, Zn, Mn, Hg, Se and Co concentration in the tap water of Kryvyi Rih city (Karachuny Reservoir) was accomplished using electrochemical methods, the most popular methods for determining the content of trace elements in natural objects and tap water. A simple and rapid method to determine trace elements in the tap water (Kryvyi Rih city) by inversion-voltammetry has been used. The concentration of trace elements was measured by voltammetricanalyzer AVA-2 d

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LeBlanc, Alain, Pierre Dumas, and Lyse Lefebvre. "Trace element content of commercial shampoos: impact on trace element levels in hair." Science of The Total Environment 229, no. 1-2 (1999): 121–24. http://dx.doi.org/10.1016/s0048-9697(99)00059-5.

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Wyszkowski, Mirosław, Natalia Kordala, and Marzena S. Brodowska. "Trace Element Content in Soils with Nitrogen Fertilisation and Humic Acids Addition." Agriculture 13, no. 5 (2023): 968. http://dx.doi.org/10.3390/agriculture13050968.

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Application of mineral fertilisers can entail an increase in trace element content in the soil. In consequence, their elevated uptake by plants and transfer to further trophic chain links may occur. The aim of the research reported here was to determine the usefulness of the tested organic materials, such as humic acids, for reduction of the content of trace elements in two soils fertilised with excessive doses of nitrogen fertilisers. Soil type had a considerable effect on soil trace element content. The content of most trace elements (cadmium, lead, chromium, cobalt, nickel, manganese, and i

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Kruglov, D. S., and V. V. Velichko. "Elemental composition of fruits of the most plants of the Vacciniaceae family." JOURNAL of SIBERIAN MEDICAL SCIENCES 6, no. 4 (2022): 7–14. http://dx.doi.org/10.31549/2542-1174-2022-6-4-7-14.

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Introduction. Disturbances of trace element hemostasis are the causes of trace element imbalance, which often lead to the development of such major human diseases as iron deficiency anemia (IDA) and diabetes mellitus. Aim. Study of the trace element composition of fruits of the Vacciniaceae family plants and determination of their prospects for use in the prevention of trace element imbalance. Materials and methods. The content of 37 elements, including essential (Mn, Fe, Cu, Cr, Co, Zn) and toxic elements (Pb, Hg, As, and Cd), was determined by inductively coupled plasma mass spectroscopy. Re

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Favretto, L. Gabrielli. "Investigation of trace element content of cheese." Food Additives and Contaminants 7, no. 3 (1990): 425–32. http://dx.doi.org/10.1080/02652039009373905.

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Wyszkowski, Mirosław, and Marzena S. Brodowska. "Content of Trace Elements in Soil Fertilized with Potassium and Nitrogen." Agriculture 10, no. 9 (2020): 398. http://dx.doi.org/10.3390/agriculture10090398.

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The aim of the study was to determine the effect of increasing potassium fertilization (0, 140, 190, and 240 mg K2O/kg of soil) in the interaction with nitrogen fertilization (130 and 170 mg N/kg of soil) on the trace elements content in the typical, non-contaminated agricultural soil. The trace elements content in the soil depended on nitrogen and potassium fertilization. Potassium fertilization had a more significant effect on trace elements content in the soil fertilized at the same time with a lower nitrogen dose (130 mg N/kg soil). Increasing potassium fertilization increased the content

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Budko, D. F., and D. M. Martynova. "Trace element uptake assessment in the planktonic biofiltration system." Океанология 59, no. 1 (2019): 33–44. http://dx.doi.org/10.31857/s0030-157459133-44.

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The concentration of trace elements (Fe, Mn, Cr, Co, Ni, Cu, Pb, Cd, As) through the planktonic food chain of the White Sea have been studied by the experimental approach. The experiment included zooplankton sampled in a reference area feeding on a seston contained the different trace metals concentrations. Seston sampled in the st. Chupa was enriched by Fe, Cu, Pb, Cr, Co, As, and Ni comparing to the seston from st. Kartesh (reference area). The differences in the concentrations of the suspended particular matter and of the indicator elements of a terrigenous admixture (Al, Ti, Zr) evidence o

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Rodkin, M. V. "Patterns of trace element composition of caustobiolites and carbonic fluids according to the results of correlation analysis: A summary of results." Actual Problems of Oil and Gas, no. 42 (December 4, 2023): 97–117. http://dx.doi.org/10.29222/ipng.2078-5712.2023-42.art7.

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Trace element analysis is a well-known research method. The article discusses the results of calculations of correlation coefficients of trace element composition of samples with model chemical content of the Upper, Middle and the Lower crust and biota. Unlike the commonly used methods for comparing the content of individual elements and groups of elements, this method, based on the use of the entire set of available trace element data, provides more robust results. The factual basis of the analysis is a database compiled of a large number of analyzes by different authors and including trace e

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Wyszkowski, Mirosław, and Marzena S. Brodowska. "Potassium and Nitrogen Fertilization vs. Trace Element Content of Maize (Zea mays L.)." Agriculture 11, no. 2 (2021): 96. http://dx.doi.org/10.3390/agriculture11020096.

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This research was conducted to study the impact of potassium and nitrogen fertilizers on the trace element content of maize (Zea mays L.). Higher doses of potassium fertilizer led to a linear increase in cadmium, lead, nickel, zinc, and manganese content, and to lower Fe:Zn and Fe:Mn ratios. Moreover, cobalt level increased in maize upon the lower doses and decreased upon the higher doses of potassium. The impact of potassium fertilizer on the levels of other elements (iron and chromium) in maize was determined by the fertilizer dose and, in particular, by the supply of additional nitrogen. Po

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Syso, Alexander I., Andrey Y. Korolyuk, and Boris A. Smolentsev. "The effect of soil properties and climate on phytocoenoses biodiversity in the forest-steppe zone of West Siberia." BIO Web of Conferences 38 (2021): 00126. http://dx.doi.org/10.1051/bioconf/20213800126.

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The effect of weather conditions and such soil properties as pH, salt content, as well as different forms of macroand trace elements, on phytocoenoses biodiversity and chemical element contents in the aboveground phytomass was investigated in the forest-steppe zone of the West Siberian plain. Soil chemical element composition and salinity content were found to affect the phytomass content of N, P, K, Na, Ca, Mg, Fe, Mn, Zn, Cu, Sr, Li.

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Dissertations / Theses on the topic "Trace element content"

Reyes, Delgadillo Dulce B. "Modeling natural attenuation of trace elements in soils." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101169.

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Trace elements added to the soil by human activities could contaminate it and occasionally cause a threat to environmental and human health. The toxicity and mobility of a trace element are affected by the element's solubility, which in turn is influenced by the soil properties. When mobile, trace elements can be leached out of the soil. If leaching occurs at a faster rate than atmospheric deposition, element concentrations in the soil will decrease by natural attenuation.<br>We analyzed soil properties in 40 soils and their soil solutions to obtain a set of equations with the most significant

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Lydia, Somers. "Trace element content variation within sulfides of the Fäboliden gold deposit." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72559.

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The Fäboliden gold deposit is an ore body in northern Sweden’s Bothnian Basin and has been the subject of studies and test mining since the early 2000s when the Gold Line, an area of anomalously high-Au glacial till in Northern Sweden, became a center of economic interest. The deposit is a hypozonal orogenic gold deposit that displays many characteristic features of ore bodies of this type, including the presence of compound sulfide grains composed of a core of löllingite surrounded by a rim of arsenopyrite, and an abundance of pyrrhotite throughout the deposit and surrounding alteration zon

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Voigt, Astrid. "Bioavailability of trace metals to plants." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19561.

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Soil quality guidelines are currently based on total trace metal loads. There is a need to define indices of bioavailability to allow reasonable predictions for plant metal uptake and toxicity in soils. Trace metal toxicities to plants often correlate best with free metal ion activities. The first objective was to develop a plant bioassay that is sensitive to trace metals at concentrations realistic for soils. The root elongation of lettuce Lactuca sativa 'Buttercrunch' was used as toxicological endpoint. This endpoint was sensitive and reproducible to environmentally relevant concentrations o

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El-Sayad, E. A. H. "Status of some trace elements in relation to the nature of the main sediments in the Fayoum (Egypt) depression." Thesis, University of Aberdeen, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384486.

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Chapter 1 of this thesis is a general review of published work o_ the origins and distribution of Cd, Cu, Fe, Mn and Zn in soils and their uptake and functions in plants. Chapter 2 is a synopsis of the geological history of the Fayoum of relevance to the origins of sediments at the study sties. Previous fractionation procedures, and a proposed modification to improve the determination of carbonate-bound elements are discussed in Chapter 3, while other analytical procedures are described in Chapter 4. Results of general soil analyses, of the fractionation analyses and useful correlation matrice

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Khandoker, Rafiqul Alam. "Distribution of Heavy Metals and Trace Elements in Soils of Southwest Oregon." PDXScholar, 1997. https://pdxscholar.library.pdx.edu/open_access_etds/4691.

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Soil samples from 118 sites on 71 geologic units in southwest Oregon were collected and analyzed to determine the background concentrations of metals in soils of the region. Sites were chosen in areas that were relatively undisturbed by human activities. The U.S. Environmental Protection Agency approved total-recoverable method was used to recover metals from samples for analysis. The twenty six metals analyzed were: Ag, AI, As, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, La, Li, Mg, Mn, Mo, Na, Ni, Pb, Sb, Se, Tl, V and Zn. The Klamath Mountains followed by the Coast Range contain the highest soil

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Colomina, Muela Jose Maria. "Prenatal one carbon metabolism-gene interactions, placenta trace element content and their effect on pregnancy outcomes." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/441746.

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El metabolisme monocarbonat i els elements traça essencials afecten al desenvolupament i resultat de l'embaràs. Es desconeixen els efectes de diversos polimorfismes del metabolisme monocarbonat (MTHFR c.665C>T, BHMT c.716G>A, SLC19A1 c.80G>A i MTRR c.66A>G) durant l'embaràs i la seva possible modulació segons l'estat en folat; i quins factors estan associats amb les concentracions d'elements traça (zinc, coure, seleni i ferro) en la placenta. Aquests aspectes dels esmentats polimorfismes i elements traça s’han estudiat en 617 embarassos del Reus-Tarragona Birth Cohort i 218 placentes. Amb al

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Andrade, Marc-David. "Development of an on-site ex-situ unsaturated-flow remediation process for trace metal contaminated soils." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85117.

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Innovative means and methods were tested to develop an economical, pragmatic and environmentally sustainable soil remediation process for heavy metal contaminated soils. An unsaturated-flow soil washing procedure was devised to dissolve the soil-bound toxic heavy metals; the latter were extracted by a chemical washing solution that percolated through the soil matrix. Subsequently, the leached toxic heavy metals were selectively concentrated, by a chemical precipitation process, into a solid waste. Thereby, a fraction of the spent ethylenediaminetetraacetic acid (EDTA), within the washin

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Bush, Peter G. "Maternal cigarette smoking and placental function : morphology, oxygen diffusive capacity, amino acid and zinc transport, and trace element content." Thesis, University of Aberdeen, 1997. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU106462.

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Maternal smoking during pregnancy is known to result in an increased incidence of intra-uterine growth retardation. This in part may be due to deleterious effects on the placenta, which is the conduit between the mother and fetus. This study was designed to investigate the effect of maternal smoking on placental function: morphometry, oxygen diffusive capacity, trace element content (zinc and cadmium), microvillous border membrane (MVBM) vesicle zinc and alanine uptake, and placental enzyme activity. The magnitude of maternal smoking and confounding factors were determined twice by questionnai

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Siaka, I. Made, of Western Sydney Nepean University, and Faculty of Science and Technology. "The application of atomic absorption spectroscopy to the determination of selected trace elements in sediments of the Coxs River Catchment." THESIS_FST_XXX_Siaka_I.xml, 1998. http://handle.uws.edu.au:8081/1959.7/238.

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An investigation of heavy metal concentrations in sediments from Coxs River catchment, a tributary of the Hawkesbury-Nepean River system, has been undertaken. A number of digestion methods were assessed for the determination of Pb, Cu, Cd, Zn, Ni, Mn, Fe, Co and Cr in reference materials by flame AAS. The method that produced the best recovery is reverse aqua regia, HNO3-HC1 with ultrasonification followed by heating on a hotplate. Based on analysis of sediments from 133 sites, background concentrations were established. Elevated heavy metal concentrations were recorded in some samples. The th

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Angel, Adam M. "Influence of Solution Composition and Temperature on the Strontium Content of Amorphous Calcium Carbonate and Subsequent Calcite." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23714.

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The Sr/Ca ratios in calcium carbonate fossils are used by the paleooceanographic community to infer past environmental conditions, such as sea surface temperature and ocean chemistry. The processes of biogenic calcification that produce these chemical signatures are complex and not fully understood, however, and vital effects are known to affect the trace element composition of the CaCO3 biomineral products. The recent discovery that calcifying organisms produce amorphous calcium carbonate (ACC) as an intermediate phase during the crystallization process calls into question whether this pathwa

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Books on the topic "Trace element content"

Hooda, Peter S. Trace elements in soils. Blackwell Pub., 2010.

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S, Hooda Peter, ed. Trace elements in soils. Blackwell Pub., 2010.

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Hooda, Peter S. Trace elements in soils. Wiley, 2010.

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Loring, Douglas H. A final report on the ICES intercalibration for trace metals in marine sediments (1/TM/MS). International Council for the Exploration of the Sea, 1987.

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Loring, Douglas H. A final report on the ICES intercalibration for trace metals in marine sediments (1/TM/MS). International Council for the Exploration of the Sea, 1987.

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International Conference on the Biogeochemistry of Trace Elements (1997 Berkeley, Calif.). Proceedings of extended abstracts from the Fourth International Conference on the Biogeochemistry of Trace Elements. Edited by Iskandar I. K. 1938- and Cold Regions Research and Engineering Laboratory (U.S.). U.S. Army Cold Regions Research and Engineering Laboratory, 1997.

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A, Manthey John, Crowley David E, and Luster Douglas G, eds. Biochemistry of metal micronutrients in the rhizosphere. Lewis Publishers, 1994.

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Dzhanaev, Z. G. Agroėkologicheskie problemy v zemledelii Severnogo Kavkaza. Rukhs, 1998.

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Landmeyer, James E. Assessment of concentrations of trace elements in ground water and soil at the Small-Arms Firing Range, Shaw Air Force Base, South Carolina. U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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Book chapters on the topic "Trace element content"

Kanias, G. D., E. Kouri, H. Arvaniti, H. Karaiosifidi, and S. Kouneli. "Trace Element Content in Breasts with Fibrocystic Disease." In Nuclear Analytical Methods in the Life Sciences 1994. Humana Press, 1994. http://dx.doi.org/10.1007/978-1-4757-6025-5_44.

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Herrmann, Bernd, and Gisela Grupe. "Trace Element Content in Prehistoric Cremated Human Remains." In Proceedings in Life Sciences. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73297-3_8.

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Müller, Axel, Alfons M. van den Kerhof, and Maarten A. T. M. Broekmans. "Trace Element Content and Optical Cathodoluminescence of Kyanite." In Proceedings of the 10th International Congress for Applied Mineralogy (ICAM). Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27682-8_54.

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Anke, S., H. Gürtler, and M. Anke. "Trace Element Content in Natural and Commercial Cat’s Food and Trace on Sex and Disease." In Trace Elements in Man and Animals 10. Springer US, 2002. http://dx.doi.org/10.1007/0-306-47466-2_248.

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Larsen, Torben, José A. Fernandéz, and Ricarda M. Engberg. "Apparent Trace Element Absorption in Growing Pigs Fed Rations of Increasing Calcium Carbonate Content." In Trace Elements in Man and Animals 10. Springer US, 2002. http://dx.doi.org/10.1007/0-306-47466-2_242.

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Nikkinen, Päivi, Mervi Hyvönen-Dabek, and Tuomas Westermarck. "The Elemental Content of Some Trace Element Medicaments by Proton-Induced X-Ray and Gamma-Ray Emission Analyses." In Trace Elements in Man and Animals 6. Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-0723-5_264.

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Rosenberg, Gary D. "The “Vital Effect” on Skeletal Trace Element Content as Exemplified by Magnesium." In Skeletal Biomineralization: Patterns, Processes and Evolutionary Trends. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-5740-5_23.

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Rosenberg, Gary D. "The “Vital Effect” on Skeletal Trace Element Content as Exemplified by Magnesium." In Skeletal Biomineralization: Patterns, Processes and Evolutionary Trends. American Geophysical Union, 2013. http://dx.doi.org/10.1029/sc005p0271.

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Leah, T. "Effects of Long-Term Application of Fertilizers on the Trace Element Content of Soils." In Soil as World Heritage. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6187-2_10.

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Runia, Lex. "Discrimination Factors on Different Trophic Levels in Relation to the Trace Element Content in Human Bones." In Proceedings in Life Sciences. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73297-3_5.

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Conference papers on the topic "Trace element content"

Selc¸uk, Nevin, Yusuf Gogebakan, and Zuhal Gogebakan. "Partitioning of Trace Elements During Fluidized Bed Combustion of High Ash Content Lignite." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78068.

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The behavior of 20 trace elements (As, B, Ba, Cd, Co, Cr, Cu, Hg, Li, Mn, Mo, Ni, P, Pb, Sb, Se, Sn, Tl, V, Zn) and 8 major and minor elements (Al, Ca, Fe, K, Mg, Na, Si, Ti) during the combustion of high ash content lignite with and without limestone addition have been investigated in the 0.3 MWt Middle East Technical University (METU) Atmospheric Bubbling Fluidized Bed Combustor (ABFBC) Test Rig. Experiments were performed without fines recycle. Inert bed material utilized in the experiments was bed ash obtained previously from the combustion of the same lignite without limestone addition in

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Senol, Naci Sertug, and Daniel D. Gregory. "Testing Pyrrhotite Trace Element Content as a Vector Towards the Mineralization in the Sullivan Deposit, B.C." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.2338.

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Yigiterhan, Oguz, Jassem Abdulaziz Al-Thani, Samah Dib, Hamood Abdulla Alsaadi, and Ebrahim Mohd Al-Ansari. "The Influence of Qatari Dust on the Element Composition of Marine Plankton." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2021. http://dx.doi.org/10.29117/quarfe.2021.0019.

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The Exclusive Economic Zone (EEZ) of Qatar is affected by extreme dust and extensive industrialization, making it an ideal location to examine influences of coastal processes on biological activity, which greatly affects marine biogeochemical cycling. In this study, the influence of dust on the trace element composition of plankton and how distance from shore effects elemental concentrations in marine plankton was investigated. Samples were collected using net tows with mesh sizes of 50 (bulkplankton) and 200 (zooplankton) mm size-fractions in 2012 and 2014 to examine temporal and spatial vari

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Agnan, Yannick, Maryse Rouelle, Romain Courault, Marianne Cohen, and Marie Alexis. "Dietary differences between reindeer and moose evidenced by trace element, carbon, and nitrogen content in their feces." In Goldschmidt2023. European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.17003.

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Petrenko, S. V., Yu V. Zhiltsova, A. N. Batyan, et al. "THE STATE OF THE THYROID SYSTEM IN CHILDREN OF PRIMARY SCHOOL AGE AND PREGNANT WOMEN OF OSTROVETS DISTRICT OF GRODNO REGION." In SAKHAROV READINGS 2022: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2022. http://dx.doi.org/10.46646/sakh-2022-2-122-125.

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Taking into account the important role of a number of essential trace elements in protecting the thyroid gland from the action of negative anthropogenic and natural factors in critical groups of the population living in the area where the Belarusian NPP is located, the body’s provision with selenium, zinc and iodine for primary school children and pregnant women was studied. For the first time, a significant decrease in the content of both selenium and zinc and iodine in the body of pregnant women was established in comparison with republican indicators, while in children no significant change

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Zhong, Zhaoping, Baosheng Jin, Yaji Huang, Hongcang Zhou, Davide Ross, and Masayuki Horio. "Study on Pollutants Emission Characteristic of Coal Gasification in a Fluidized Bed Test Rig." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78070.

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This paper presents the results of coal gasification in a fluidized bed test rig of Xuzhou bituminous coal. The diameter of the fluidized bed combustor is 0.1m and the height is 4.22m. The bed temperature is maintained by a method of high temperature flue gas interline heating to overcome high heat losses associated with a oil burner. Test results are reported for variations in the bed temperature, air to coal, steam to coal and Ca to S ratio and their influence on gas yields and desulphurization efficiency. The distribution of polycyclic aromatic hydrocarbons (PAHs) and heavy metal trace elem

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Bashura, A. N., I. V. Koktysh, and V. T. Koktysh. "MICROELEMENTOSIS IN OSTEOARTHRITIS UNDER CONDITIONS OF HIGH ANTHROPOGENIC LOAD." In SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2021. http://dx.doi.org/10.46646/sakh-2021-2-13-16.

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The content of trace elements (manganese (Mn), iron (Fe), chromium (Cr), molybdenum (Mo), zinc (Zn), copper (Cu) in peripheral blood, and synovial fluid in 26 patients with osteoarthritis was studied. A decrease in the concentration of Mn (p = 0,02) and Fe (p = 0,02) and a decrease in Zn (p = 0,01) in the peripheral blood and an increase in the concentration of Fe (p = 0,01) and Zn (p = 0,02) in the synovial fluid in patients with osteoarthritis when compared with the control group. A statistically significant increase in the concentration of Mn (p = 0,001), Cr (p = 0,01), Zn (p = 0,002) and F

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Nigai, E. V. "GEOCHEMICAL FEATURES OF NYATYGRAN INTRUSIVE ROCKS AND PALEOGEODYNAMIC SETTINGS OF THEIR FORMATION." In Современные проблемы регионального развития. ИКАРП ДВО РАН, 2024. http://dx.doi.org/10.31433/978-5-904121-41-9-2024-22-25.

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Analysis of chemical and trace-element compositions of rocks from the Nyatygran Complex revealed their geochemical features. Both gabbroids and granitoids are assigned to calc-alkaline rocks by their agpaitic index. Gneissic gabbros show enhanced alkalinity not common to basic rocks (3.9–4.3%); their Mg index is appreciably higher than their mafic index. In them, the magnesium content sharply prevails over the iron content. The alumina content of gabbros is as high as 20.38%. Geochemically they are interpreted as I-type igneous rocks. Gneissic granitoids with a slight predominance of iron cont

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Bordean, Despina-Maria, Adrian Rivis, Simion Alda, Teodor Cristea, and Laura Radulescu. "COPPER CONTENT AND ANTIOXIDANT ACTIVITY OF FRUITS." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/6.1/s25.18.

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Copper has a fantastic role in the organism, indifferent if its mammalian, plant, bacteria or yeast, functioning as a cofactor in enzymes involved in various processes. In agriculture, different copper compounds are used as fungicide to protect plants from fungal diseases. In humans the role of copper is also crucial, as it is an essential trace element being involved in many processes as well as a cofactor for several enzymes involved in antioxidant defense, iron metabolism, and neurotransmitter synthesis, playing additionally a role in the immune system, helping to fight infections and infla

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Wang, Qiuhao, Wei Zheng, Huaqiang Yin, Shengqiang Li, Xuedong He, and Tao Ma. "Corrosion of High Temperature Alloys in the Primary Coolant of HTGR Under Very-High Temperature Operation." In 2020 International Conference on Nuclear Engineering collocated with the ASME 2020 Power Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icone2020-16074.

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Abstract The primary coolant loop of the high temperature gas-cooled reactor contains trace impurities that could cause some corrosion to the materials. When the HTGR operates at a very high temperature, the impurities in the coolant have significant influence on the properties of the alloys used in steam generators. Corrosion tests were conducted on the Inconel 800H, Inconel 617 and Hastelloy X, and the alloys are commonly used in the steam generator of HTGR. They were corroded for up to 48 hours at 950 °C in a given helium atmosphere with trace impurities, and the corrosion results were obse

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Reports on the topic "Trace element content"

Nanev, Veselin, Margarita Gabrashanska, Katya Georgieva, Ivelin Vladov, Omnia Kandil, and Neli Tsocheva-Gaytandzhieva. Trace Element Contents in Rat Tissues after Experimentally Induced Fasciola hepatica Infection. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2018. http://dx.doi.org/10.7546/crabs.2018.10.04.

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Birk, D., J. Pilgrim, and E. Zodrow. Trace Element Contents of Coals and Associated Rocks of the Sydney Basin Nova Scotia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/130814.

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Trahan, Corey, Jing-Ru Cheng, and Amanda Hines. ERDC-PT : a multidimensional particle tracking model. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/48057.

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This report describes the technical engine details of the particle- and species-tracking software ERDC-PT. The development of ERDC-PT leveraged a legacy ERDC tracking model, “PT123,” developed by a civil works basic research project titled “Efficient Resolution of Complex Transport Phenomena Using Eulerian-Lagrangian Techniques” and in part by the System-Wide Water Resources Program. Given hydrodynamic velocities, ERDC-PT can track thousands of massless particles on 2D and 3D unstructured or converted structured meshes through distributed processing. At the time of this report, ERDC-PT support

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Leybourne, M. I., J. M. Peter, M A Schmidt, D. Layton-Matthews, A. Voinot, and L. Mathieu. Geochemical evidence for a magmatic contribution to the metal budget of the Windy Craggy Cu-Co(±Zn) volcanogenic massive-sulfide deposit, northwestern British Columbia. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328018.

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Volcanogenic massive-sulfide (VMS) deposits may have had metal contributions from magmatic degassing and leaching of footwall rocks. The Windy Craggy Cu-Co-Zn VMS deposit in northwestern British Columbia may include magmatic contributions, based on laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) of fluid inclusions (enriched in Sb, Sn, and Bi) and lithogeochemistry. Sulfide-mineral trace-element abundances in the massive-sulfide orebody, underlying stockwork zone, gold zone, and altered and unaltered mafic rock and argillite were analyzed by LA-ICP-MS. Elevated Au, W, A

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Rákos, András Dominik. Poland and the European Green Deal: On Track Towards Peaceful Coexistence? Külügyi és Külgazdasági Intézet, 2022. http://dx.doi.org/10.47683/kkielemzesek.ke-2022.64.

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Following the adoption of the European Green Deal, the traditionally reluctant position of the government of Poland regarding climate neutrality is showing ruptures and has become controversial. The aim of this policy brief is to assess the structural and discursive elements shaping the climate and energy policy of the Polish government. The paper uses a mixed methodology of literature review and qualitative content analysis involving official statements issued by three government bodies between 1 September and 31 December, 2021. The study finds that the reluctance of the Polish government is

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Beckett-Brown, C. E., A. M. McDonald, and M. B. McClenaghan. Discovering a porphyry deposit using tourmaline: a case study from Yukon. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331349.

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As the exploration for porphyry Cu-Au-Mo deposits has become increasingly challenging, the development of more effective techniques directed at detecting buried deposits has become critical. One methodology is to focus on key minerals, one of which is tourmaline, a robust, ubiquitous mineral in most mineralized porphyry systems. Overall, a combination of physical and chemical characteristics including 1) macro-color, 2) morphology, 3) inclusion populations, and 4) trace-element compositions are useful in discriminating between porphyry- versus non-porphyry-derived (or related) tourmaline in su

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de Caritat, Patrice, Brent McInnes, and Stephen Rowins. Towards a heavy mineral map of the Australian continent: a feasibility study. Geoscience Australia, 2020. http://dx.doi.org/10.11636/record.2020.031.

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Heavy minerals (HMs) are minerals with a specific gravity greater than 2.9 g/cm3. They are commonly highly resistant to physical and chemical weathering, and therefore persist in sediments as lasting indicators of the (former) presence of the rocks they formed in. The presence/absence of certain HMs, their associations with other HMs, their concentration levels, and the geochemical patterns they form in maps or 3D models can be indicative of geological processes that contributed to their formation. Furthermore trace element and isotopic analyses of HMs have been used to vector to mineralisatio

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Dehnavi, A. S., C. R. M. McFarlane, S. H. McClenaghan, and D. R. Lentz. In situ LA-ICP-MS of sulfide minerals in VMS deposits throughout the Bathurst Mining Camp, New Brunswick, Canada: volatile trace-element contents and distribution with implications for their syngenetic to polyphase metamorphic history. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/293681.

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Crawley, Andrew. MERCOSUR: In search of a New Agenda. Inter-American Development Bank, 2004. http://dx.doi.org/10.18235/0012231.

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MERCOSUR made substantial achievements in a short period. There was a great deal of liberalization; intra-regional trade increased significantly; a certain sense of regional belonging was inculcated among national publics; and the regional project served as a pretext for national adjustments. Inconsistencies nonetheless persisted between the project¿s goals, on the one hand, and its institutions and mechanisms on the other; there have been persistent gaps between rhetorical aims and concrete practices; and by the turn of the present decade various subregional crises seemed to call MERCOSUR¿s r

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Anderson, Sharron, Antony Lloyd, Malcom Baxter, Michael Walls, and Victoria Bailey-Horne. Turmeric survey – Final report. Food Standards Agency, 2022. http://dx.doi.org/10.46756/sci.fsa.ojv940.

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The consumption of turmeric supplements is increasingly popular and is reported to provide numerous health benefits including antioxidant, analgesic, anti-inflammatory, antiseptic, anticarcinogenic, chemopreventive, chemotherapeutic, antiviral, antibacterial, antifungal and antiplatelet activities [1]. However, in recent months there has been a number of reports of hepatotoxicity linked to the consumption of these supplements. Such reports and scientific publications led to a review of the safety of turmeric and curcumin by the UK Committee on Toxicity of Chemicals in Food, Consumer Products a

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