Showing 1,081 - 1,100 results of 1,272 for search '"chemical element"', query time: 0.16s Refine Results
  1. 1081

    Geochemistry of a paleo-oxbow lake sediments and its implications for the late Holocene extreme overbank flooding history of the Yellow River within the Zoige Basin, NE Tibetan Pla... by Shuo Wang, Ninglian Wang, Ninglian Wang, Yuzhu Zhang, Yuzhu Zhang, Chang Huang, Yan Zhu, Qili Xiao, Dou Chen, Haoyu Wang, Yisen Ming, Xiaoling Huang, Sikai Wang

    Published 2023-02-01
    “…Our results suggest that not only traditional sedimentological proxies, but also chemical elements can be applied in defining sequences with different genetic types, especially the paleoflood deposits in the paleo-oxbow profile. …”
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    Article
  2. 1082

    Deep Transfer Learning for Image Classification of Phosphorus Nutrition States in Individual Maize Leaves by Manuela Ramos-Ospina, Luis Gomez, Carlos Trujillo, Alejandro Marulanda-Tobón

    Published 2023-12-01
    “…This status is mediated by approximately 14 chemical elements acquired by the plant, and their determination plays a pivotal role in farm management. …”
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    Article
  3. 1083

    A detection method of trace metal elements in black soil based on hyperspectral technology: Geological implications by WANG Jianhua, ZUO Ling, LI Zhizhong, MU Huayi, ZHOU Ping, YANG Jiajia, ZHAO Yingjun, QIN Kai

    Published 2021-06-01
    “…In order to solve the above problems, according to the physical and chemical properties of soil chemical variables, the enrichment characteristics of heavy metals are transferred to the related major chemical elements, so that the weak information of heavy metals can be indirectly quantitatively inverted. …”
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    Article
  4. 1084

    Geochemical features of holocene section of Minzelinskoe lake sapropel (Western Siberia) by Anton Maltsev, Galina Leonova, Vladislav Bobrov, Sergey Krivonogov

    Published 2019-05-01
    “…Unequal enrichment of different sediment layers by chemical elements reflects the changes in vegetation types and related biochemical reactions. …”
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    Article
  5. 1085

    Geochemical features of poplar leaf elemental composition in urban areas by Dmitry Valerievich Yusupov, Leonid Petrovich Rikhvanov, Nataliya Vladimirovna Baranovskaya, Albina Rashidovna Yalaltdinova

    Published 2016-08-01
    “…The methods used in the study: selection of poplar leaf samples on a uniform grid of 2x2, 1x1, 0,5x0,5 km; ashing the samples at 450 °C with determination of ash content in accordance with GOST 26929-94; quantitative instrumental neutron activation analysis (determination of content of 28 chemical elements); empirical data processing and analysis by correlation, cluster and factor (method of principal components) analyzes, as well as with the use of indicator ratios: Th/U, La/Th, La/Lu, La/Yb, La/Sm, Ce/Nd, La+Ce/Sm+Eu, La+Ce/Yb+Lu. …”
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    Article
  6. 1086

    Geochemical features of poplar leaf elemental composition in urban areas by Dmitry Valerievich Yusupov, Leonid Petrovich Rikhvanov, Nataliya Vladimirovna Baranovskaya, Albina Rashidovna Yalaltdinova

    Published 2016-08-01
    “…The methods used in the study: selection of poplar leaf samples on a uniform grid of 2x2, 1x1, 0,5x0,5 km; ashing the samples at 450 °C with determination of ash content in accordance with GOST 26929-94; quantitative instrumental neutron activation analysis (determination of content of 28 chemical elements); empirical data processing and analysis by correlation, cluster and factor (method of principal components) analyzes, as well as with the use of indicator ratios: Th/U, La/Th, La/Lu, La/Yb, La/Sm, Ce/Nd, La+Ce/Sm+Eu, La+Ce/Yb+Lu. …”
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    Article
  7. 1087

    Phytochemical study of <i>Tribulus Terrestris</i> L. by A. Affaf, Yu. N. Karpenko, D. K. Gulyaev, V. D. Belonogova, E. I. Molokhova, O. L. Blinova, A. A. Gileva

    Published 2020-01-01
    “…Tríbulus terrestris L., an annual herb belonging to the Zygophyllaceae family and growing in moderate and tropical climates, has a rich chemical composition of biologically active substances and chemical elements.The aim of the work is a phytochemical study of Tribulus terrestris L. growing in different geographical zones.Materials and methods. …”
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    Article
  8. 1088

    Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert? by Lucien Reclaru, Lavinia Cosmina Ardelean, Catalin Adrian Miu, Alexandru Florian Grecu

    Published 2020-04-01
    “…By inductively coupled plasma-optical emission spectrometry/mass spectrometry (ICP-OES/MS), traces of significant chemical elements were assessed: Hf, Cr, Y, As, Pb, Al, Fe, Cu, Se, Sb, La, Ni, Co, Sb, Ta, Te, Ba, Sm, Nb, Hg, Cd, Sr, As and Se. …”
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    Article
  9. 1089

    Impact of Mining and Ore Processing on Soil, Drainage and Vegetation in the Zambian Copperbelt Mining Districts: A Review by Bohdan Kříbek, Imasiku Nyambe, Ondra Sracek, Martin Mihaljevič, Ilja Knésl

    Published 2023-03-01
    “…Solid speciation studies of potentially harmful chemical elements (PHEs), plant and human bioaccessibility studies, and a range of mineralogical techniques were used to assess the pathways of PHE cycling in terrestrial and aqueous systems and their impacts on human health. …”
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    Article
  10. 1090

    Water Quality Assessment of Groundwater Resources in Qaleeh Shahin Plain Based on Cd and HEI by Yari A.R., Sobhanardakani S.*

    Published 2016-09-01
    “…Abstract Aims: The chemical elements in water resources, especially groundwater, can affect the water consumption purposes. …”
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    Article
  11. 1091

    Gamma-ray Full Spectrum Analysis for Environmental Radioactivity by HPGe Detector by Meeyoung Jeong, Kyeong Beom Lee, Kyeong Ja Kim, Min-Kie Lee, Ju-Bong Han

    Published 2014-12-01
    “…Odyssey, one of the NASA’s Mars exploration program and SELENE (Kaguya), a Japanese lunar orbiting spacecraft have a payload of Gamma-Ray Spectrometer (GRS) for analyzing radioactive chemical elements of the atmosphere and the surface. In these days, gamma-ray spectroscopy with a High-Purity Germanium (HPGe) detector has been widely used for the activity measurements of natural radionuclides contained in the soil of the Earth. …”
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    Article
  12. 1092

    The Pulp Stones: Morphological Analysis in Scanning Electron Microscopy and Spectroscopic Chemical Quantification by Aleksandra Palatyńska-Ulatowska, Marcos Cook Fernandes, Krystyna Pietrzycka, Agata Koprowicz, Leszek Klimek, Ronaldo Araújo Souza, Marieli Pradebon, José Antonio Poli de Figueiredo

    Published 2021-12-01
    “…Thus, this study aimed to morphologically analyze pulp stones and present their chemical quantification, identifying their main chemical elements. It also correlates the results with their possible induction mechanisms. …”
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    Article
  13. 1093

    Assessment of Soil Characteristics Using a Three-Band Agricultural Digital Camera by Glinko Agnieszka, Kaźmierowski Cezary, Piekarczyk Jan, Królewicz Sławomir

    Published 2022-08-01
    “…First, the reference data were collected, which consist of 151 samples that were later examined in the laboratory to specify the granulometric composition and to quantify some chemical elements. Second, additional soil properties such as cation exchange capacity, organic carbon and soil pH were measured. …”
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    Article
  14. 1094

    Indoor/outdoor relationship of particulate matter (PM10) and its chemical composition in a coastal region of Colombia by Roberto Rojano, Alejandra M. Vengoechea, Heli A. Arregocés

    Published 2023-12-01
    “…The indoor/outdoor ratio of PM10 concentrations ranged from 0.213 ± 0.01 at the station with the lowest levels of PM10 to 0.360 ± 0.02 at the station with the highest levels of PM10. Chemical elements with the highest levels in PM10 were crustal elements (Ca, Na, K, Fe, Mg, As, and Co), and those with the lowest levels in PM10 were anthropogenic tracers emitted from transportation (Cd, V, Cu, Mn, Ni, Pb, and Zn). …”
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    Article
  15. 1095

    Anti-fungal and anti-termite activity of extractives compounds from thermally modified ash woods by Kévin Candelier, Marie-France Thévenon, Robert Collet, Philippe Gérardin, Stéphane Dumarçay

    Published 2020-04-01
    “…In addition, new chemical elements were generated by the thermal degradation of wood polymers (lignin and hemicelluloses), including aliphatic acids, monosaccharides and other products resulting from their dehydration reaction. …”
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    Article
  16. 1096

    Proxanal-based predictive model for estimating ultanal attributes of lignocellulosic biomass by Isah Yakub Mohammed, David James, Baba Jibril El-Yakubu, Mohammed Ahmed Bawa

    Published 2022-12-01
    “…Lignocellulosic materials represent one of the clean alternative energy sources that have carbon in their building blocks, which can be processed into liquid biofuel and useful chemicals. Elemental compositions of biomass such as carbon (C), hydrogen (H) and oxygen (O) are key indicators for establishing calorific value, energy efficiency and carbon footprint during direct application as fuel and feedstock in thermochemical conversion. …”
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    Article
  17. 1097

    Geochemical features of holocene section of Minzelinskoe lake sapropel (Western Siberia) by Anton Maltsev, Galina Leonova, Vladislav Bobrov, Sergey Krivonogov

    Published 2019-05-01
    “…Unequal enrichment of different sediment layers by chemical elements reflects the changes in vegetation types and related biochemical reactions. …”
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    Article
  18. 1098

    Mechanisms of fluorine accumulation in nitric thermal waters by Stepan Lvovich Shvartsev

    Published 2018-01-01
    “…It was determined that thermal waters constantly dissolve endogenous aluminosilicates, accumulate chemical elements in solution, and form the secondary minerals of different composition after the equilibrium achievement. …”
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  19. 1099

    Trace Minerals, Heavy Metals, and Preeclampsia: Findings from the Boston Birth Cohort by Tiange Liu, Mingyu Zhang, Eliseo Guallar, Guoying Wang, Xiumei Hong, Xiaobin Wang, Noel T. Mueller

    Published 2019-08-01
    “…Epidemiologic findings on these chemical elements have been inconsistent. To confirm experimental findings in mice, we examined associations of trace minerals (Mn and Se) and heavy metals (Cd, lead [Pb], and mercury [Hg]) with preeclampsia in a birth cohort. …”
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    Article
  20. 1100

    Highly Stretchable and Robust Electrochemical Sensor Based on 3D Graphene Oxide–CNT Composite for Detecting Ammonium in Sweat by Yunzhi Hua, Mingxiang Guan, Linzhong Xia, Yu Chen, Junhao Mai, Cong Zhao, Changrui Liao

    Published 2023-03-01
    “…Sweat, one of the most suitable biological fluids for non-invasive monitoring, contains various chemical elements relating abundant information about human health conditions. …”
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    Article