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Journal articles on the topic 'Macro metals'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Koraboyevna, Atakhonova Sayyora. "BASIC METHODS OF STUDYING THE INTERNAL STRUCTURE OF METALS." American Journal of Engineering and Technology 5, no. 12 (2023): 33–37. http://dx.doi.org/10.37547/tajet/volume05issue12-08.

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This article presents the methods of analysis of metals. Technological processes, such as checking the macro and microstructure of metals and alloys, are widely covered. Equipment used for macro and micro analysis and slide preparation technologies are widely covered.

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Dukhan, Nihad, Yu-chen Karen Chen-Wiegart, Ashley Paz y. Puente, Dinc Erdeniz, and David C. Dunand. "Introduction - Porous Metals: From Nano to Macro." Journal of Materials Research 35, no. 19 (2020): 2529–34. http://dx.doi.org/10.1557/jmr.2020.282.

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Idonije, O. Blessing*1 3. Festus O. Okojie2 &. Agbebaku O. Solomon3. "SOME SELECTED TRACE METALS (ESSENTIAL AND TOXIC) AND MACRO-METAL MG AS PROBABLE BIOMARKERS OF OBESITY-ASSOCIATED COMPLICATIONS." Indian Journal of Medical Research and Pharmaceutical Sciences 6, no. 8 (2019): 11–21. https://doi.org/10.5281/zenodo.3380453.

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<strong>Background: </strong>Trace metals and Mg metabolism may play a role in adiposity which contributes to inflammation and oxidative stress;   two potential mechanisms proposed to play a major role in the morbidity/mortality associated with obesity hence this study. <strong>Methods: </strong>We investigated trace metals-essential and toxic (Zn, Cu, Mn, Fe, Se, Cr, Pb, Cd and macro-metal Mg) in two hundred and sixty-four (264) subjects. They consist of group NONDH (60 non obese non diabetic/hypertensive or normal control); Group ONDH (45 Obese Non Diabetic/    

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Luo, Liang, Zheng Yi Jiang, Dong Bin Wei, and Xiaofeng He. "Study on Micro Hydroforming of Metals." Advanced Materials Research 887-888 (February 2014): 1133–38. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.1133.

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Micro hydroforming has an ability to manufacture complex 3D micro parts at a high production rate and has drawn increasing attentions. Brief understanding of macro hydroforming, for instance, deep drawing, is necessary to understand the principle of micro hydroforming. Then, special phenomena, such as size effects, occurred at micro scale are discussed and the related theories explaining these phenomena are introduced. Based on the similarities and differences between micro and macro hydroforming, experiments and simulation which consider the size effects are reviewed.

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Dukhan, Nihad, Yu-chen Karen Chen-Wiegart, Ashley Paz y. Puente, Dinc Erdeniz, and David C. Dunand. "Introduction - Porous Metals: From Nano to Macro - CORRIGENDUM." Journal of Materials Research 35, no. 23-24 (2020): 3305. http://dx.doi.org/10.1557/jmr.2020.327.

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Zavoyilichinskaya, E. B. "Theory of the gradual accumulation of fatigue damage in metals under proportional cyclic loading." Izvestiya MGTU MAMI 9, no. 2-4 (2015): 68–75. http://dx.doi.org/10.17816/2074-0530-67134.

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The paper provides system of hypotheses about the development of defects in metals at micro, meso and macro levels (such as fragile micro- and macro-cracks) under arbitrary proportional (simple) cyclic loading. The system is formulated on the basis of extensive experimental and theoretical material about fatigue failure of metals and metal alloys. For uniaxial loading the symmetrical correlations of phenomenological model of brittle fatigue loading of metals are written. The correlations cover the entire process step by step with the release of a typical state - the type of defect.

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Babić Leko, Mirjana, Matej Mihelčić, Jasna Jurasović, et al. "Heavy Metals and Essential Metals Are Associated with Cerebrospinal Fluid Biomarkers of Alzheimer’s Disease." International Journal of Molecular Sciences 24, no. 1 (2022): 467. http://dx.doi.org/10.3390/ijms24010467.

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Various metals have been associated with the pathogenesis of Alzheimer’s disease (AD), principally heavy metals that are environmental pollutants (such as As, Cd, Hg, and Pb) and essential metals whose homeostasis is disturbed in AD (such as Cu, Fe, and Zn). Although there is evidence of the involvement of these metals in AD, further research is needed on their mechanisms of toxicity. To further assess the involvement of heavy and essential metals in AD pathogenesis, we compared cerebrospinal fluid (CSF) AD biomarkers to macro- and microelements measured in CSF and plasma. We tested if macro-

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Noverita, Noverita, Nuniek Ina Ratnaningtyas, Endang Sukara, Nuraeni Ekowati, and Sri Lestari. "Tinjauan Biosorpsi Logam Berat Pb dan Cd Oleh Jamur Makro." Al-Kauniyah: Jurnal Biologi 16, no. 2 (2023): 309–26. http://dx.doi.org/10.15408/kauniyah.v16i2.24569.

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AbstrakKeberadaan logam berat perlu ditanggulangi, salah satunya dengan cara biosorpsi. Biosorpsi merupakan salah satu metode remediasi yang paling tepat digunakan dalam menanggulangi pencemaran logam berat. Proses secara efisien dapat menyerap logam berat terlarut bahkan logam berat yang ada dalam larutan kompleks yang sangat encer. Jamur makro merupakan contoh biosorben yang dapat digunakan dalam biosorpsi. Pemanfaatan jamur makro sebagai biosorben sangat tepat dilakukan karena keanekaragaman jenisnya tinggi, cepat tumbuh dengan kemampuan metabolisme yang beragam pada berbagai senyawa organi

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Tafere, Dessie Ashagrie, and Minbale Admas Teshager. "Determination of the Levels of Selected Essential Metals in Sycamore (Ficus sycomorus L) Fruit and Seed Using Flame Atomic Absorption Spectrophotometry." Journal of Chemistry 2023 (July 13, 2023): 1–11. http://dx.doi.org/10.1155/2023/3937604.

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Background. Edible wild fruits are nature’s gift to mankind. Considering the growing need to identify alternative bio-nutritional sources, some underutilized species of Ficus sycomorus L. of the family Moraceae were evaluated as wild edible fruits to study its nutritive and mineral composition in order to prioritize its edibility for people. Methods. The concentration of macro (K, Ca, and Mg) and micro essential elements (Fe, Mn, Zn, and Cu) metals in sycamore fruit and seed samples was determined by using a flame atomic absorption spectrophotometer (F AAS). The wet digestion procedure was eva

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Nam, Hyunbin, Seonghoon Yoo, Junghoon Lee, Youngsang Na, Nokeun Park, and Namhyun Kang. "GTA Weldability of Rolled High-Entropy Alloys Using Various Filler Metals." Metals 10, no. 10 (2020): 1371. http://dx.doi.org/10.3390/met10101371.

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Gas tungsten arc (GTA) weldability of rolled CoCrFeMnNi high-entropy alloys (HEAs) was conducted using stainless steel (STS) 308L and HEA fillers. Microstructure and mechanical properties of the welds were examined to determine GTA weldability of the rolled HEA. The welds had no macro-defects, and component behaviour between base metal (BM) and weld metal (WM) showed significant differences in the weld using the STS 308L filler. Macro-segregation of Fe components was confirmed in the central region in the WM using the STS 308L filler. Because the columnar grain sizes of all the WMs were larger

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Aziz, Alex, Javier Carrasco, and Yaroslav Grosu. "Towards tuning the modality of hierarchical macro-nanoporous metals by controlling the dealloying kinetics of close-to-eutectic alloys." Physical Chemistry Chemical Physics 23, no. 44 (2021): 25388–400. http://dx.doi.org/10.1039/d1cp03878h.

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Pham, Hong Thi, Khuong Van Dinh, Duc Tien Do, Ha Thi Thu Le, Thu Thi Ninh, and Hoang Thi Thu-Huong. "MACRO-ZOOPLANKTON ABUNDANCE IN RELATION TO METAL ACCUMULATION AND WATER QUALITY IN TRUC BACH LAKE." Vietnam Journal of Science and Technology 58, no. 3A (2020): 105. http://dx.doi.org/10.15625/2525-2518/58/3a/14280.

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Urban lake pollution is one of the serious issues due to suffering of waste discharged from householders. However, there is a gap of knowledge about the diversity of zooplankton species and how metals accumulate in zooplankton in urban ecosystems. We addressed this by determining the rule of blooming macro-zooplankton in Truc Bach lake and levels of two essential metals: copper (Cu), and zinc (Zn) and of three non-essential metals: arsenic (As), and lead (Pb) in water samples were determined. The results showed that Cladocerans and copepods are macro-zooplankton dominant species in Truc Bach L

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13

Angelova, Violina, Sava Tabakov, Anton Yordanov, and Dimitar Dimitrov. "Content of heavy metals, macro- and microelements in apple fruits." Agricultural Sciences 16, no. 43 (2024): 92–100. https://doi.org/10.22620/agrisci.2024.43.010.

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The research evaluated the content of heavy metals, micro, and macronutrients in fruits of eight apple varieties - Red Del. Superchief, Fujion pbr, Enterprise, Pinova, Orion, Red Del. Mestar, Gemini and Crimson crisp, grown in orchard near Brestnik village, situated at 3.5 km distance from the potential source of pollution (the Holding KCM 2000) near Plovdiv, Bulgaria. Significant varietal differences in the composition of the apple fruit were observed. The highest content of Pb, Cd, Zn, Cu, Fe, Mn, P, Mg and K were found in the variety Red Del. Superchief. Variety Pinova contained Ca and Hg,

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14

Xing, Xiu-San. "A macro-micro connected failure evolution equation for brittle metals." Physics Letters A 230, no. 5-6 (1997): 363–68. http://dx.doi.org/10.1016/s0375-9601(97)00247-8.

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15

IKENOYA, Kazutaka, Nobutada OHNO, and Naoto KASAHARA. "OS1506 Elasto-viscoplastic macro material modeling of unidirectionally perforated metals." Proceedings of the Materials and Mechanics Conference 2011 (2011): _OS1506–1_—_OS1506–3_. http://dx.doi.org/10.1299/jsmemm.2011._os1506-1_.

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16

Argibay, N., M. Chandross, S. Cheng, and J. R. Michael. "Linking microstructural evolution and macro-scale friction behavior in metals." Journal of Materials Science 52, no. 5 (2016): 2780–99. http://dx.doi.org/10.1007/s10853-016-0569-1.

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17

Allegretta, Ignazio, Fabjola Bilo, Eva Marguí, Galina V. Pashkova, and Roberto Terzano. "Development and Application of X-rays in Metal Analysis of Soil and Plants." Agronomy 13, no. 1 (2022): 114. http://dx.doi.org/10.3390/agronomy13010114.

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18

Chen, Jin Mu, Huang Yuan, and Markus Schneider. "Investigation of Micromechanical Deformation Mechanisms in Sinter Powder Metals." Advanced Materials Research 668 (March 2013): 351–55. http://dx.doi.org/10.4028/www.scientific.net/amr.668.351.

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Sintered powder metals have found wide applications in industry. However, the constitutive description under complex loading conditions is an open issue. In the present work, the inelastic deformation mechanisms of sintered iron are investigated using nano-indentation technique. With help of the finite element method, the material behaviour of powder particles can be identified from extensive nano-indentations. Furthermore, the micro-hardness of pre-strained specimens has been investigated as a function of the macro strains up to 14%. Nano-indentation measurements provide a linear correlation

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19

Emokpae, MA, and AD Tijani. "The impact of proteinuria on serum levels of trace elements in sickle cell disease patients." Journal of Medical and Biomedical Sciences 3, no. 3 (2015): 16–20. http://dx.doi.org/10.4314/jmbs.v3i3.3.

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Micronutrient deficiency has been recognized as a serious complication in sickle cell disease (SCD) patients and the impact of proteinuria on the levels of trace metals has not been evaluated in our setting. This study evaluates the impact of proteinuria on serum levels of copper, iron, zinc and magnesium in SCD patients. Serum Iron, Zinc, copper and magnesium were assayed by colorimet-ric methods. Urine protein was initially assayed using urinalysis dipstick method while those that were positive for macro-albuminuria were re-evaluated using sulphosalicylic acid colorimetric tech-nique. Out of

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20

Islam, Md Didarul, Ashiqur Rahaman, and Fahmida Jannat. "Assessment of micro and macro nutrients in poultry feeds available in Dhaka city, Bangladesh." Journal of Scientific Agriculture 1 (October 27, 2017): 264. http://dx.doi.org/10.25081/jsa.2017.v1.825.

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This study was based on to determine the concentration of macro and micro nutrients as well as toxic and nontoxic heavy metals present in the chicken feed available in Dhaka city of Bangladesh. All macro nutrients, if present in the feed at high concentration have some adverse effect, at the same time if this nutrient present in the feed at low concentration this have some adverse effect too. So that this nutrient level should be maintained at a marginal level. On the other side toxic heavy metals if present in the feed at very low concentration those can contaminate the total environment of t

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Shulkin, Vladimir, Natalia Bogdanova, Tatyana Lutsenko, and Svetlana Yurchenko. "Impact of filtration artifacts on the seasonality of river waters chemical composition." E3S Web of Conferences 98 (2019): 06013. http://dx.doi.org/10.1051/e3sconf/20199806013.

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The difference in concentration of filterable trace metals, macro ions, nitrate and dissolved organic carbon (DOC) after capsule and membrane 0.45 µm filters was studied at the seasonal sampling of the typical medium size boreal Razdolnaya River, Far East of Russia. Trace metals showed notable decrease after membrane filtration compared with capsules, though concentrations of macro ions, nitrates and DOC were equal. Clogging of membranes with subsequent retention of coarse colloids was suggested as a reason for this difference. In summer the dissimilarity in concentration grew in order Cu <

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22

Brinza, Loredana, Matthew J. Dring, and Maria Gavrilescu. "MARINE MICRO AND MACRO ALGAL SPECIES AS BIOSORBENTS FOR HEAVY METALS." Environmental Engineering and Management Journal 6, no. 3 (2007): 237–51. http://dx.doi.org/10.30638/eemj.2007.029.

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23

Kowalczyk, K., and Z. Mroz. "Description of anisotropy of textured metals using macro and micro models." Journal de Physique IV (Proceedings) 105 (March 2003): 199–206. http://dx.doi.org/10.1051/jp4:20030188.

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Ramani, Karthik, and Brendan Moriarty. "Thermoplastic bonding to metals via injection molding for macro-composite manufacture." Polymer Engineering & Science 38, no. 5 (1998): 870–77. http://dx.doi.org/10.1002/pen.10253.

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25

Portal, Lotan, Iryna Polishchuk, Maria Koifman Khristosov, Alexander Katsman, and Boaz Pokroy. "Self-catalytic growth of one-dimensional materials within dislocations in gold." Proceedings of the National Academy of Sciences 118, no. 39 (2021): e2107930118. http://dx.doi.org/10.1073/pnas.2107930118.

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Dislocations in metals affect their properties on the macro- and the microscales. For example, they increase a metal’s hardness and strength. Dislocation outcrops exist on the surfaces of such metals, and atoms in the proximity of these outcrops are more loosely bonded, facilitating local chemical corrosion and reactivity. In this study, we present a unique autocatalytic mechanism by which a system of inorganic semiconducting gold(I) cyanide nanowires forms within preexisting dislocation lines in a plastically deformed Au-Ag alloy. The formation occurs during the classical selective dealloying

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Li, Li, Lihong Wu, Jinxiong Yuan, Xinyu Zhao, and Yuezhang Xia. "Water Environment in Macro-Tidal Muddy Sanmen Bay." Journal of Marine Science and Engineering 13, no. 1 (2024): 55. https://doi.org/10.3390/jmse13010055.

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The water environment in estuaries is a crucial factor affecting the biodiversity and self-purification capacity of coastal zones. This study focuses on Sanmen Bay as an example to study the characteristics and temporal variations of the water environment in the turbid coastal waters on the East China Sea coast. The field data of hydrodynamics and water environment from 2018 to 2023 including different seasons in the bay were collected and analyzed. We analyzed the correlation between water environmental factors and sediment and explored the impact of sediment mixing layers on the water enviro

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Banno, Takumi, Yun Cang Li, Cui E. Wen, and Yasuo Yamada. "Mechanical Properties of Micro-Porous Metals Produced by Space-Holding Sintering." Advanced Materials Research 29-30 (November 2007): 75–78. http://dx.doi.org/10.4028/www.scientific.net/amr.29-30.75.

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Micro-porous nickel foams with an open cell structure were fabricated by the space-holding sintering. The average pore size of the micro-porous nickel specimens ranged from 30 μm to 150 μm, and the porosity ranged from 60 % to 80 %. The porous characteristics of the nickel specimens were observed using scanning electron microscopy (SEM). The mechanical properties were studied using compressive tests. For comparison, macro-porous nickel foams prepared by the chemical vapour deposition method with pore sizes of 800 μm and 1300 μm and porosity of 95 % were also presented. Results indicated that t

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Guo, Xiang Hui, and Hai Yun Hu. "Non-Equilibrium Statistical Theory of Void Microstructure Evolution in Irradiated Metals." Applied Mechanics and Materials 364 (August 2013): 568–72. http://dx.doi.org/10.4028/www.scientific.net/amm.364.568.

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The non-equilibrium statistical theory was used as a theoretical approach to modeling and predicting void evolution in metal materials. Fokker-Plank equation was introduced as the kinetic equation for the void evolution, from which the probability density distribution function of voids could be obtained. From the micro-mechanism of metal's irradiation damage, void growth rate equation was obtained using spherical Weilv model and control diffusion theory, and then was simplified based on appropriate assumptions. According to the probability density distribution function of void, a series of mac

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Ouma, Shellemiah Otieno, Esther Nkirote Magiri, Mabel Imbuga, and Hamadi Boga. "Comparative progressive composting, evaluation and profiling of minerals and heavy metals in human solid waste collected by green toilet system, cow dung, poultry droppings, and goat waste composts." Journal of Agriculture, Science and Technology 23, no. 3 (2024): 9–28. http://dx.doi.org/10.4314/jagst.v23i3.2.

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The value of human excreta, a resource that is available in all societies is underestimated in present agriculture. In parts of South East Asia, the use of human excreta as fertilizer in agriculture is a common practice benefiting production. The excreta contain chemical elements that circulate in biogeochemical cycles necessary in plant nutrition. This study aimed to progressively detect, quantify, and profile minerals (micro, macro and heavy metals) levels in human solid waste from Green Toilet System and compare with cow dung, poultry droppings, and goat waste composts at different stages o

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Kaur, Gagandeep, and Rajwinder Singh. "Analysis of Chemical Pollutants using Non-Invasive Approach in Indian Flying Fox (Pteropus giganteus) in Selected Regions of Punjab." Environment and Ecology 42, no. 1 (2024): 11–19. http://dx.doi.org/10.60151/envec/auya2089.

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Present study was conducted to estimate heavy metals, macro and micro nutrients along with pesticide residues in fecal pellets of Pteropus giganteus fruit bat at three different sites, Chatpat Bani (district Pathankot) site I, village Katani Kalan (district Ludhiana) site II and village Longowal (district Sangrur) as site III. Among heavy metals, Cr predominates (17.35-26.30 ppm) followed by Pb (7.17-10.03 ppm) from three selected sites. Comparatively, higher levels of Cr, Pb, Cd and Ni heavy metals were recorded at site III, whereas As at site II, respectively. Among macro nutrients, K (7653.

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Shi, Yujun, Ying Zhang, Jingyu Qin, and Zhonghua Zhang. "Macro-/micro-coupling regulation of nanoporous metals via vapor phase alloying-dealloying." Science China Materials 64, no. 6 (2021): 1521–33. http://dx.doi.org/10.1007/s40843-020-1546-1.

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Morgounov, Alexey, Huihui Li, Sergey Shepelev, et al. "Genetic Characterization of Spring Wheat Germplasm for Macro-, Microelements and Trace Metals." Plants 11, no. 16 (2022): 2173. http://dx.doi.org/10.3390/plants11162173.

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Wheat as a staple food crop is the main source of micro- and macronutrients for most people of the world and is recognized as an attractive crop for biofortification. This study presents a comprehensive investigation of genomic regions governing grain micro- and macroelements concentrations in a panel of 135 diverse wheat accessions through a genome-wide association study. The genetic diversity panel was genotyped using the genotyping-by-sequencing (GBS) method and phenotyped in two environments during 2017–2018. Wide ranges of variation in nutrient element concentrations in grain were detecte

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Angelova, Violina, and Velika Kuneva. "CONTENT OF HEAVY METALS, MICRO AND MACRO ELEMENTS IN BULGARIAN HONEYDEW HONEY." Agriculture & Food 12, no. 1 (2024): 172–85. https://doi.org/10.62991/af1996590728.

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Farı́as, Silvia, Sebastián Pérez Arisnabarreta, Cristian Vodopivez, and Patricia Smichowski. "Levels of essential and potentially toxic trace metals in Antarctic macro algae." Spectrochimica Acta Part B: Atomic Spectroscopy 57, no. 12 (2002): 2133–40. http://dx.doi.org/10.1016/s0584-8547(02)00183-0.

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Pham-Anh, Tuan, and Mika Sillanpää. "Fractionation of Macro and Trace Metals Due to Off-Time Interrupted Electrodewatering." Drying Technology 28, no. 6 (2010): 762–72. http://dx.doi.org/10.1080/07373937.2010.482693.

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Naccari, Clara, Vincenzo Ferrantelli, Gaetano Cammilleri, et al. "Trace Elements in Stenella coeruleoalba: Assessment of Marine Environmental Pollution and Dolphin Health Status." Animals 14, no. 11 (2024): 1514. http://dx.doi.org/10.3390/ani14111514.

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Heavy metals are environmental contaminants and can easily accumulate and biomagnify in various marine species (fishes and mammalians) at the top of the aquatic food chain. Among marine mammalians, the striped dolphin (Stenella coeruleoalba) is the most abundant cetacean in the Mediterranean Sea and is considered to be a sentinel species to monitor the environmental marine pollution. In this study, the contents of toxic metals and metalloids (Cd, Pb, Hg, and As), micro-elements (Ni, Cr, Cu, Fe, Co, Mn, Se and Zn) and macro-elements (Na, Ca, K, Mg and P) were evaluated by ICP-MS analysis in sev

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Yuldasheva, Sokhiba, Sanjar Sherimbetov, Abdukodir Tulaganov, and Khalima Khaydarova. "Detection of heavy metals and pesticides in the raw materials of Araxacum Officinale Wigg and Taraxacum Kok-saghyz Rodin plants." E3S Web of Conferences 244 (2021): 02035. http://dx.doi.org/10.1051/e3sconf/202124402035.

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Taraxacum officinale Wigg and the results of scientific research on the development of modern methods of physicochemical analysis of heavy metals that can be found in raw materials of Taraxacum kok-saghyz Rodin, and the presence of pesticides in plants using the GOST (governmental standard) European Pharmacopoeia standard. Methods for the quantitative determination of inductively coupled plasma mass spectrometry (ICP-MS) of heavy metals; macro and microelements in plant raw materials have been developed. The test for the presence of pesticides and heavy metals in plants according to the GOST s

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Stopher, Miles A., and E. Luke Simpson. "Hydrogen effects in corrosion: discussion." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375, no. 2098 (2017): 20170028. http://dx.doi.org/10.1098/rsta.2017.0028.

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This session contained talks on the characterization of hydrogen-enhanced corrosion of steels and nickel-based alloys, emphasizing the different observations across length scales, from atomic-scale spectrographic to macro-scale fractographic examinations. This article is part of the themed issue ‘The challenges of hydrogen and metals’.

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Chumarev, V. M., V. P. Maryevich, and V. A. Shashmurin. "On the Role of Diffusion in the Oxidation of Fe, Ni, Co and the Fe-Sn Alloy by Calcium and Sodium Sulfates." Defect and Diffusion Forum 258-260 (October 2006): 63–67. http://dx.doi.org/10.4028/www.scientific.net/ddf.258-260.63.

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Diffusion processes play a dominant part in the macro kinetics of Fe, Ni and Co oxidation by calcium and sodium sulfates. Here, the reaction product forms a compact covering which spatially divides the reagents on the surface in the same way as in the oxidation and sulfidization of metals by oxygen and sulfur. Therefore, it is possible to assume in advance that interaction of metals with calcium and sodium sulfates will be determined not by the actual chemical reaction properly but by the diffusion transport processes.

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Nasibullina, L., O. Akhsanova, and G. Sagdeeva. "Atomic Emission Analysis in the AC Arc of Heavy Metals in Deposits of Petrochemical Industries." Bulletin of Science and Practice, no. 5 (May 15, 2023): 132–38. http://dx.doi.org/10.33619/2414-2948/90/16.

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Environmental pollution with heavy metals is one of the most pressing problems, due to a wide range of negative effects of heavy metals, including a detrimental effect on vegetation, soil, as well as degradation of the ecosystem as a whole. Sources of heavy metals pollution are mining and ferrous metallurgy enterprises, petrochemical plants, machine-building plants. Determination of the content and concentration of heavy metals in the current environmental situation is more than relevant for assessing the quality of the environment. Currently, there are two main groups of analytical methods fo

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Goncharova, Yu K., O. A. Braginа, E. M. Kharitonov, S. V. Goncharov, and N. A. Ochkas. "Isolation sources of micro and macro elements among connection rice samples the creation of drought-resistant forms." E3S Web of Conferences 262 (2021): 03008. http://dx.doi.org/10.1051/e3sconf/202126203008.

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Metals content affects not only for nutritional value of plants, but also their resistance to stress. So it was revealed that cationic composition changes hydration of cytoplasm. Hydration of cytoplasm positively correlated with content of alkali metals, a representative of which is potassium, and negatively with amount of alkaline earth metals (calcium, magnesium). Variability of rice collection samples in terms of content of potassium, sodium, calcium, magnesium, ammonium cations has been studied. Sources that are recommended to be used in breeding programs for the creation of drought-resist

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Gurbanov, A. G., O. A. Bogatikov, A. B. Leksin, et al. "The first data about the variations in the content of macro- and microelements and precious metals in vertical sections in industrial wastes of the Fiagdon tailing dump (Republic of North Ossetia - Alania)." Доклады Академии наук 487, no. 1 (2019): 69–72. http://dx.doi.org/10.31857/s0869-5652487169-72.

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The new data published firstly obtained by quantitative methods (XRF and ICP MS) on the terms of the average content of macro- and microelements in industrial wastes of the Fiagdon tailing dump exceed the data used for calculation of the metals reserves stored in tailing pond. While elevated content of precious metals, especially Platinum, revealed for the first time. This makes more attractive measure from an economic point of view. The development of a method for the complete utilization of waste, with the extraction of economically valuable and environmentally hazardous elements.

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Ayub, Mehak, Gaitee Joshua, Shamaila Inayat Nadeem, Sana Javaid Awan, Zahid Baig Mirza, and Anis-ur-Rahman. "Identification of Aquatic Macro-invertebrates and Determination of E. coli and Heavy Metals in Rawal Lake, Pakistan." Lahore Garrison University Journal of Life Sciences 6, no. 04 (2022): 282–96. http://dx.doi.org/10.54692/lgujls.2022.0604229.

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Water is an important constituent of life’s support system. However, industrial growth, urbanization and anthropogenic activities have affected the quality of water bodies mostly in the world. The aim of the study was to assess the water quality of Rawal Lake, Pakistan, which is source of drinking water for the residents of Islamabad and Rawalpindi, using macro-invertebrates as pollution indicators, and through microbial and heavy metal analysis. For this purpose, macro-invertebrates and water samples were collected from Rawal Lake (Korang Nala Entrance), Rawal Lake (Centre) and from Rawal Lak

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Warnasooriya, Viraji, Sadhisha Gunawardena, Pabodha Weththasinghe, Barana Jayawardana, Mallique Qader, and Ruvini Liyanage. "Nutritional Properties, Antioxidant Activity, and Heavy Metal Accumulation in Selected Marine Macro-Algae Species of Sri Lanka." Nutraceuticals 4, no. 1 (2024): 50–64. http://dx.doi.org/10.3390/nutraceuticals4010004.

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In recent years, the emergence of drug resistance and sensitivity in leading diseases has heightened global interest in natural nutraceuticals as primary health supplements. However, comprehensive scientific scrutiny is essential before marketing these as supplements. In this study, we assessed the nutritional composition, antioxidant activities, and trace metal accumulation in eleven selected Sri Lankan coastal seaweed species. Gracilaria corticata had the highest (p < 0.05) ash and crude fiber content among the species. Protein content ranged from 4.87% to 23.67% (DW), with Ulva rigida di

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Zulfadhly, Z., M. D. Mashitah, and S. Bhatia. "Heavy metals removal in fixed-bed column by the macro fungus Pycnoporus sanguineus." Environmental Pollution 112, no. 3 (2001): 463–70. http://dx.doi.org/10.1016/s0269-7491(00)00136-6.

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Zhao, Guoqiang, Yanqing Sheng, Changyu Li, and Qunqun Liu. "Effects of macro metals on alkaline phosphatase activity under conditions of sulfide accumulation." Science of The Total Environment 697 (December 2019): 134151. http://dx.doi.org/10.1016/j.scitotenv.2019.134151.

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Shanyavskiy, Andrey. "Scales of Metal Fatigue Failures and Mechanisms for Origin of Subsurface Fracture Formation." Solid State Phenomena 258 (December 2016): 249–54. http://dx.doi.org/10.4028/www.scientific.net/ssp.258.249.

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Three fatigue regimes in accordance with three scale levels are considered and mechanisms of fatigue crack origination subsurface discussed. Surface hardening procedure can be used for the transition area of the crack origination from surface to subsurface in High-Cycle-Fatigue (meso-scale level) regime. In this case subsurface cracking characterized the same fatigue curve that was constructed for the Very-High-Cycle-Fatigue (micro-scale level) regimes due to the same mechanism of metals cracking. This effect was considered for Al-and Fe-based alloys. Subsurface crack origination can be receiv

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Šestan, Indira, Melisa Ahmetović, Besim Salkić, Emir Imširović, and Nedžad Šeper. "Study on the Physico-Chemical Properties of Cement Dust and the Possibility of Application in Agriculture." International Journal of Environment, Agriculture and Biotechnology 7, no. 4 (2022): 248–52. http://dx.doi.org/10.22161/ijeab.74.26.

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Cement dust is created as a by-product during the production of cement, and in its composition it contains high concentrations of calcium oxide (CaO), potassium oxide (K2O) and other important micro and macro elements. Due to its composition, it is suitable for correcting the pH of the soil, as well as for the uptake of essential elements by plants. The ability to accumulate essential and non-essential heavy metals also depends on the cultivated plant species, and vegetables show the greatest affinity for these elements. The application of cement dust as a soil additive used to improve the phy

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Stroilova, D. V., and O. О. Konovalova. "Influence of lead on the distribution of macro- and microelements and biochemical parameters in the organs of rats." Regulatory Mechanisms in Biosystems 15, no. 4 (2024): 889–93. https://doi.org/10.15421/0224128.

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Heavy metals, entering the environment, accumulate in various organisms, disrupting metabolic pathways and are potentially dangerous for human health. Therefore, it is important to determine the mechanism of disturbances in some mammalian systems due to long-term exposure to a heavy metal such as lead. Therefore, there is a need for careful research, analysis and investigation of the consequences of the accumulation of heavy metals in organisms and further development of strategies to mitigate their effects. The purpose of this study was to study the influence of exposure to lead (II) on the d

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Robien, Andrea, Thomas Striebel, and Reimer Herrmann. "Modeling of dissolved and particle-bound pollutants in urban street runoff." Water Science and Technology 36, no. 8-9 (1997): 77–82. http://dx.doi.org/10.2166/wst.1997.0647.

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In order to develop water quality models of urban street runoff we evaluated runoff data of inorganic and organic pollutants collected in past studies. Most pollutants were quantified separately regarding particle-bound and dissolved forms. The findings of regression analysis demonstrate, that runoff parameters like total runoff and antecedent dry period are appropriate surrogate parameters to evaluate loads of dissolved and particle-bound heavy metals. The modeling of dissolved pollutants (heavy metals, macro ions) yields equations connecting runoff parameters, which are capable to approximat

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