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Literatura académica sobre el tema "Al cu mg zn"

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Publicado: 4 de mayo de 2024

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Artículos de revistas sobre el tema "Al cu mg zn"

1

Ye, Dae-Hee, Hyun-Sik Kim, Min-Cheol Kang, Jung-Dae Kim y Hae-Yong Jeoung. "Electrical Conductivity by Addition of Zn and Cu on Mg-Zn-Cu Alloys". Journal of Korea Foundry Society 34, n.º 3 (30 de junio de 2014): 100–106. http://dx.doi.org/10.7777/jkfs.2014.34.3.100.

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Minervino, Antonio, Marta López-Alonso, Raimundo Barrêto Júnior, Frederico Rodrigues, Carolina Araújo, Rejane Sousa, Clara Mori et al. "Dietary Zinc Supplementation to Prevent Chronic Copper Poisoning in Sheep". Animals 8, n.º 12 (30 de noviembre de 2018): 227. http://dx.doi.org/10.3390/ani8120227.

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The aim of this study was to evaluate whether zinc (Zn) supplementation protects against hepatic copper (Cu) accumulation in copper-loaded sheep. Forty cross-bred lambs were assigned to five experimental groups. These included the control group (C) and four treatment groups that received Cu and/or Zn supplementation (dry matter (DM) basis) over 14 weeks, as follows: Cu (450 mg Cu/kg); Zn-35 (450 mg Cu + 35 mg Zn/kg); Zn-150 (450 mg Cu + 150 mg Zn/kg); and Zn-300 (450 mg Cu + 300 mg Zn/kg). Blood, liver, and bile samples were obtained for mineral determination by inductively coupled plasma optical emission spectrometry (ICP–OES). The hepatic metallothionein (MT) concentrations were also determined. At the end of the experiment, hepatic Cu concentrations were higher in all Cu-supplemented groups than in C. Hepatic Cu accumulation was lower in the groups receiving the Zn supplementation than in the Cu group, although the difference was only statistically significant (66%) in the Zn-300 group. The MT concentrations tended to be higher (almost two-fold) in the Zn groups (but were not dose related) than in the C and Cu groups, and they were related to hepatic Zn concentrations. Zn supplementation at 300 mg/kg DM is useful for preventing excessive hepatic Cu accumulation in sheep exposed to high dietary concentrations of Cu.
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Miettinen, Jyrki. "Thermodynamic description of Cu–Mg–Ni and Cu–Mg–Zn systems". Calphad 32, n.º 2 (junio de 2008): 389–98. http://dx.doi.org/10.1016/j.calphad.2008.03.005.

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Yin, He, Zhi Hui Li, Kai Wen, Qing Hong Wen y Ya Nan Li. "Effect of Zn/Mg Ratio on Second Phase Dissolution during Solution Treatment of Al-Zn-Mg-Cu Alloys". Materials Science Forum 1071 (18 de octubre de 2022): 3–10. http://dx.doi.org/10.4028/p-04ua6p.

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The main alloying elements have a decisive influence on the type and quantity of the second phase of the Al-Zn-Mg-Cu alloy, and even on the dissolution of the second phase during solution treatment. The effect of Zn/Mg ratio on second phase dissolution during solution treatment of Al-Zn-Mg-Cu alloys was investigated by means of differential scanning calorimetry (DSC), scanning electron microscope (SEM) and electrical conductivity testing. The results showed that Mg (Zn,Cu,Al)2 phase and Fe-rich phase existed in the as-deformed alloys. In addition, a small amount of Al2CuMg phase was found in the low and medium Zn/Mg ratio alloy. The number of Mg (Zn,Cu,Al)2 phases as the major second phase in the alloys was inversely proportional to the Zn/Mg ratio. Mg (Zn,Cu,Al)2 phase essentially dissolved into the matrix after solution treatment at 465°C/2h. Increasing the solution temperature and time were both beneficial to the dissolution of the Al2CuMg phase. With the increase of the solution temperature from 465°C to 475°C, the conductivity of the alloy showed a decreasing trend initially and then increased. As the solution time increased at 470°C, the electrical conductivity of the low-Zn/Mg ratio alloy decreased and then increased due to the more secondary phase. After the second phase was fully dissolved in the alloy, the electrical conductivity gradually increased with the increase of the solution time.
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Cemin, Henrique S., Luke A. Swalla, Jamie L. Pietig, Sharlie A. Hansen y Ernie L. Hansen. "PSIX-13 Effects of zinc and copper levels on growth performance of nursery pigs". Journal of Animal Science 98, Supplement_3 (2 de noviembre de 2020): 179–80. http://dx.doi.org/10.1093/jas/skaa054.318.

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Abstract A 20-d experiment was conducted to evaluate the effects of added Zn and Cu on growth performance of nursery pigs. Treatments were arranged in a 2 × 2 factorial treatment structure with main effects of added Zn (100 or 3,000 mg/kg of diet) and Cu (10 or 200 mg/kg of diet). Basal Zn and Cu levels (100 and 10 mg/kg, respectively) were from organic sources, while the added high levels (2,900 and 190 mg/kg, respectively) were from Zn oxide and Cu hydroxychloride. A total of 784 pigs (PIC 337 × Camborough), initially 6.0 kg, were used with 7 replicates per treatment. Experimental diets were corn, soybean meal, and whey permeate-based and contained 1.38% SID Lys. Pigs were weighed and feed disappearance measured to calculate ADG, ADFI, and G:F. Data were analyzed with SAS MIXED procedure. From d 0 to 10, there was no evidence (P > 0.10) for interactive or main effects of Zn or Cu. From d 10 to 20 and overall (d 0 to 20), there was an interaction (P < 0.05) between Zn and Cu for G:F. From d 10 to 20, pigs fed 10 mg/kg added Cu had improved G:F when 3,000 mg/kg added Zn was fed; however, pigs fed 200 mg/kg added Cu had similar G:F regardless of added Zn level. There was no evidence (P > 0.10) for interaction for ADG or ADFI, indicating an additive Zn and Cu effect. Feeding 3,000 mg/kg added Zn or 200 mg/kg added Cu improved ADG, ADFI, and final BW with the highest performance observed when feeding both 3,000 mg/kg added Zn and 200 mg/kg added Cu. In summary, feeding high levels of Zn or Cu did not impact the first 10-d postweaning performance, but Zn and Cu effects were observed in the subsequent 10-d and overall performance.
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6

Zhang, Rong Hua, Biao Wu y Xiao Ping Zheng. "Effect of High Pressure Treatment on Nanoindentation Creep Property of Al-Zn-Mg-Cu Alloy". Applied Mechanics and Materials 508 (enero de 2014): 106–9. http://dx.doi.org/10.4028/www.scientific.net/amm.508.106.

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Al-Zn-Mg-Cu alloy was 3GPa pressure treated, and the effect of high pressure treatment on nanoindentation creep property of Al-Zn-Mg-Cu alloy was investigated by using nanoindentation. The results show that indentation creep in Al-Zn-Mg-Cu alloy before and after 3GPa pressure treatment can occur at room temperature, 3GPa pressure treatment can reduce creep deformation of Al-Zn-Mg-Cu alloy at room temperature at different pressure and time, and leads to the creep resistance of Al-Zn-Mg-Cu alloy rises.
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7

Nastiti, Sekar Alinda, Harmita . y Catur Jatmika. "SYNTHESIS AND ANALYSIS OF ZINC METHIONINE, ZINC GLYCINE, COPPER LEUCINE, AND COPPER GLYCINE COMPLEXES USING ATOMIC ABSORPTION SPECTROPHOTOMETRY". International Journal of Applied Pharmaceutics 10, n.º 1 (20 de diciembre de 2018): 388. http://dx.doi.org/10.22159/ijap.2018.v10s1.86.

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Objective: The aim of this study was to perform metal-amino acid synthesis and to analyze the free and bonded mineral concentrations.Methods: In this study, the synthesis of amino acid metal complexes was carried out by reacting free metal ions, derived from a water-soluble metalsalt, with amino acids in a 1:2 molar ratio.Results: The respective yields of this synthesis process were 95.38%, 95.95%, 76.31%, and 93.91% for zinc (Zn)-methionine (Zn(Met)2), Zn-glycine(Zn(gli)2), copper-leucine (Cu(leu)2), and Cu-glycine (Cu(gli)2) complexes, respectively. The metal-amino acid complexes were then separated usingcolumn chromatography and further analyzed by atomic absorption spectrophotometry (AAS). The bonded metal concentrations of the Zn(Met)2,Zn(gli)2, Cu(leu)2, and Cu(gli)2 complexes were 189.32 mg/g, 353.78 mg/g, 180.89 mg/g, and 275.11 mg/g, respectively. The free metal concentrationsof the Zn(Met)2, Zn(gli)2, Cu(leu)2, and Cu(gli)2 complexes were 13.57 mg/g, 12.92 mg/g, 0.19 mg/g, and 2.12 mg/g, respectively.Conclusion: In this study, Zn(Met)2, Zn(gli)2, Cu(leu)2, and Cu(gli)2 complexes were successfully formed and analyzed. The mineral concentration ineach complex differed depending on the type of mineral and ligand.
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8

Yang, Hong Bin, Meng Nie Li, Heng Yong Bu y Xin Lu. "Effects of alloying elements on the amounts of MgZn2 and S-Al2CuMg phase in 7075 aluminum alloy". Journal of Micromechanics and Molecular Physics 05, n.º 02 (junio de 2020): 2050003. http://dx.doi.org/10.1142/s2424913020500034.

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Thermodynamic equilibria of 27 compositions of 7075 aluminum alloy are computed using JMatPro. The maximum amount of MgZn2 phase (MP[M]) and the maximum amount of S-Al2CuMg phase (MP[S]) in each composition are taken as the objective functions. Effects of the contents of Zn, Mg and Cu on MP[M] and MP[S] are studied using analysis of variance (ANOVA) with second-order interactions. Analysis results suggest that Zn, Mg, Cu, Zn[Formula: see text]Mg and Mg[Formula: see text]Cu have a significant influence on the MP[M] with a sequence of Zn[Formula: see text]Mg[Formula: see text]Mg[Formula: see text]Cu[Formula: see text]Cu[Formula: see text]Zn[Formula: see text]Mg, whereas Zn, Mg and Cu have a significant influence on the MP[S] with a sequence of Cu[Formula: see text]Zn[Formula: see text]Mg. Predictive equations for calculating the amounts of MP[M] and MP[S] are obtained using regression analyses. With the requirement of maximum amount of MP[M] and minimum amount of MP[S] within the alloy, the optimized composition of 7075 aluminum alloy is predicted and it contains 6.1%Zn, 2.27%Mg and 1.2%Cu.
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BACKIALAKSHMI, S., A. ARANGASAMY, J. SHARANYA NAIDU, J. GHOSH y R. BHATTA. "Study of the impact of organic minerals on spermatozoal gene expression in Osmanabadi bucks". Indian Journal of Animal Sciences 94, n.º 4 (4 de abril de 2024): 369–74. http://dx.doi.org/10.56093/ijans.v94i4.147248.

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Sperm transcripts aside from providing genetic material have an eminent role in post-fertilization events and embryonic development. The current study was carried out to study the gene expression in Osmanabadi buck (Capra hircus) supplemented with organic minerals. Organic minerals alone or in combination with different concentrations were fed to the treatment groups (T2- Zn 20 mg, T3- Zn 40 mg, T4- Zn 60 mg, T5- Cu 12.5 mg, T6- Cu 25 mg, T7- Cu 37.5 mg, T8- Zn 20 mg + Cu 12.5 mg, T9- Zn 40 mg + Cu 25 mg, T10- Zn 60 mg + Cu 37.5 mg) along with the concentration mixture and roughages; whereas control (T1) group was fed concentrate mixture and roughages. The sperm samples were processed for gene expression studies of Ras Homolog Family Member A (RHOA), Mesoderm Specific Transcript (MEST), Nucleoside diphosphate-linked moiety X motif 6 (NUDT6), Protamine 1 (PRM1), Protamine 2 (PRM2) and Heat shock protein 90 alpha family class A member 1 (HSP90AA) using qRT-PCR and the protein-protein interaction analysis was carried out through String database version 11.0. Supplementation of trace minerals has enhanced the gene expression at a significant level (P<0.05) in the supplemented groups. The expression of MEST, RHOA, and PRM1 was higher in Cu 25-supplemented groups; whereas, NUDT6 in Zn 20, PRM2 and HSP90AA in Zn 40 showed higher expressions. Osmanabadi bucks supplemented with Cu 25 mg have shown promising results in the present and earlier studies so it can be concluded that the field-level application of Cu 25 mg would lead to promising results.
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10

Subrahmanyam, Sreenath, Allan Adams, Anantanarayanan Raman, Dennis Hodgkins y Mark Heffernan. "Ecological modelling of a wetland for phytoremediating Cu, Zn and Mn in a gold–copper mine site using Typha domingensis (Poales: Typhaceae) near Orange, NSW, Australia". European Journal of Ecology 3, n.º 2 (20 de diciembre de 2017): 77–91. http://dx.doi.org/10.1515/eje-2017-0016.

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AbstractAn artificial wetland was computationally modelled using STELLA®, a graphical programming tool for an Au-Cu mine site in Central-west NSW, the aim of which was to offer a predictive analysis of a proposed wetland for Cu, Zn and Mn removal using Typha domingensis as the agent. The model considers the important factors that impact phytoremediation of Cu, Zn and Mn. Simulations were performed to optimise the area of the wetland; concentration of Cu, Zn and Mn released from mine (AMD); and flow rates of water for maximum absorption of the metals. A scenario analysis indicates that at AMD = 0.75mg/L for Cu, Zn and Mn, 12.5, 8.6, and 357.9 kg of Cu, Zn and Mn, respectively, will be assimilated by the wetland in 35 years, which would be equivalent to 61 mg of Cu/kg, 70 mg of Zn/kg and 2,886 mg of Mn/kg of T. domingensis, respectively. However, should Cu, Zn and Mn in AMD increase to 3 mg/L, then 18.6 kg of Cu and 11.8 kg of Zn, respectively, will be assimilated in 35 years, whereas no substantial increase in absorption for Mn would occur. This indicates that 91 mg of Cu, 96 mg of Zn and 2917 mg of Mn will be assimilated for every kg of T. domingensis in the wetland. The best option for Cu storage would be to construct a wetland of 50,000 m2area (AMD = 0.367 mg/L of Cu), which would capture 14.1 kg of Cu in 43 years, eventually releasing only 3.9 kg of Cu downstream. Simulations performed for a WA of 30,000 m2indicate that for AMD = 0.367 mg/L of Zn, the wetland captures 6.2 kg, releasing only 3.5 kg downstream after 43 years; the concentration of Zn in the leachate would be 10.2 kg, making this the most efficient wetland amongst the options considered for phytoremediating Zn. This work will help mine managers and environmental researchers in developing an effective environmental management plan by focusing on phytoremediation, with a view at extracting Cu, Zn and Mn from the contaminated sites.
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Tesis sobre el tema "Al cu mg zn"

1

Howard, P. "Precipitation and creep in an Al-Zn-Mg-Cu based alloy". Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356709.

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Jackson, Adrian. "Homogenisation effects of the hot working of Al-Zn-Mg-Cu alloys". Thesis, Imperial College London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319934.

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Solas, Denis. "Anisotropie des propriétés mécaniques et endommagement des alliages Al-Zn-Mg-Cu". Grenoble INPG, 1997. http://www.theses.fr/1997INPG0226.

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Les toles fortes en alliage d'aluminium de la serie 7000 peuvent presenter une anisotropie des proprietes mecaniques (limite d'elasticite, ecrouissage et endommagement). Ces toles sont obtenues apres laminage a chaud, mise en solution, trempe, detensionnement et traitement de revenu. Dans un premier temps, nous avons caracterise la microstructure du materiau (structure granulaire, texture cristallographique, microstructure des joints de grains. . . ). L'anisotropie des proprietes mecaniques est determinee pour differents traitements de revenu par essai de traction. L'anisotropie de la limite d'elasticite est simulee a l'aide d'un modele autocoherent elastoplastique. Ce modele permet de prevoir et de prendre en compte les contraintes residuelles du deuxieme ordre generees par le detensionnement. En ce qui concerne l'endommagement et la rupture, plusieurs mecanismes ont ete identifies en fonction du traitement de revenu et de la direction de traction. En particulier, la rupture intergranulaire se produit pour une contrainte critique qui depend du mode de sollicitation des joints de grains (traction et cisaillement) et de leur microstructure.
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Caraher, Sally Kate 1974. "Clustering and precipitation processes in age-hardened Al-Zn-Mg-(Ag, Cu) alloys". Monash University, School of Physics and Materials Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7803.

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Lamb, Justin. "Decomposition and its effects on mechanical properties in Al-Zn-Mg-Cu alloys". Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54931.

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The effects of variations in composition on the decomposition process in Al-Zn-Mg-Cu alloys (i.e. – 7xxx-series aluminum alloy) were studied emphasizing their effect on mechanical properties. Several experimental quaternary alloys were studied to compare their behavior with commercial 7xxx-series alloys. The investigation included studies on the effects of natural aging, artificial aging, quench sensitivity, precipitate free zone formation, and homogenization. Additionally, “true aging” curves (i.e. – hardness/strength vs. conductivity) were presented in order to visualize and quantify the entire precipitation process. It is obvious that fluctuations in the main alloying elements/processing parameters can alter the precipitation process, but the purpose of this work was to quantify those changes using standard industrial techniques. It was found that natural aging was detrimental for strength in the T6 temper for alloys containing more than 1.0 wt.% Cu, and was shown to alter the coarsening kinetics in the over-aged condition (T7). Conversely, for alloys with Cu contents less than 0.5% natural aging was shown to be beneficial for strength. Altering the Zn:Mg ratio was also shown to effect natural aging response of an alloy in addition to introducing additional precipitation processes (T-phase). Therefore, this work is a blueprint for advanced alloy manufacturing that allows for the rapid production of new alloys and tempers by narrowing the research focus depending on an alloy’s composition.
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Cottignies, Laurent. "Propriétés mécaniques d'un alliage Al-Zn-Mg-Cu obtenu par voie Osprey(TM)". Grenoble INPG, 1993. http://www.theses.fr/1993INPG0077.

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Nous avons etudie la microstructure et les proprietes mecaniques statiques d'un alliage d'aluminium al-zn-mg-cu a haute teneur en zinc elabore par deposition en mode osprey. L'alliage a ete file et mis en solution de maniere conventionnelle. Nous avons suivi la cinetique de la precipitation structurale a 105 degres par diffusion centrale de rayons x in situ. Une etude des precipites en microscopie electronique a permis de mettre en evidence la presence de phases cubiques specifiques presentant avec la matrice cfc la relation d'orientation de kurdjumov et sachs. L'alliage possede une limite d'elasticite tres elevee pour un alliage d'aluminium. A l'aide de modeles de la metallurgie physique couples a un modele de deformation elastoplastique des polycristaux, nous avons etabli que la limite d'elasticite peut etre interpretee par des mecanismes de cisaillement des precipites. Les precipites ne sont pas distribues de maniere isotrope a l'interieur des grains ; ce phenomene est responsable d'une part de l'anisotropie de la limite d'elasticite. Les modes de rupture de l'alliage ont ete etudies en traction et en traction sous pression hydrostatique de confinement. Deux modes de ruine de materiau sont en competition : la decohesion des joints de grains et la propagation de bandes de cisaillement
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Криницький, А. В. y В. З. Барсуков. "Дослідження впливу легування (Zn та Zn+Cu) на корозійну стійкість (α-Al-Mg2Si) сплавів системи Al-Mg-Si". Thesis, КНУТД, 2016. https://er.knutd.edu.ua/handle/123456789/4543.

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Рожин, А. В. "Совершенствование процессов модифицирования и легирования алюминиевых сплавов на основе систем Al-Cu-Mg и Al-Zn-Mg-Cu : автореф. дис. … канд. техн. наук : 05.16.04". Thesis, б. и, 2013. http://hdl.handle.net/10995/20232.

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Yoon, Yuhchae. "Formation and breakdown on chromate conversion coatings on Al-Zn-Mg-Cu 7x75 alloys". Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1101754567.

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Thesis (Ph. D.)--Ohio State University, 2004.
Title from first page of PDF file. Document formatted into pages; contains xxi, 282 p.; also includes graphics (some col.). Includes bibliographical references (p. 262-282).
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Rick, Cristiane Fonseca. "Estudo da liga base de Zn-Al-Cu-Mg aplicada na fabricação de jóias folhadas". Pontifícia Universidade Católica do Rio Grande do Sul, 2006. http://hdl.handle.net/10923/3377.

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Made available in DSpace on 2013-08-07T18:55:09Z (GMT). No. of bitstreams: 1 000383030-Texto+Completo-0.pdf: 6878557 bytes, checksum: 5f1c83e9a47491adfecd8ffbc7b21de4 (MD5) Previous issue date: 2006
The last years, the jewellery industrial sector is becoming of significance importance in the scenario of national and international economy. Brazil is one of the jewels biggest world producer, being the Rio Grande do Sul the leading among all Brazilian states, with a regional distinction for the city of Guaporé witch has more than a hundred jewel factories, where are produced gold and silver jewels and semijewels plated with gold and silver. In spite of it, there are very few literature related to scientific studies in the jewellery area, particularly nationwide. In this context, this research has as a main aim to investigate the Zn-Al- Cu-Mg alloy that has recently applied in fabrication of jewel-plated in order to obtain information about the properties of interest to fabrication and plated processes. The experimental methodology utilized in this work involved the following steps: analysis of superficial defects in gold and silver plated semi-jewel made with Zn-Al-Cu-Mg commercial alloy and as well as the determination of its microstructure and mechanical characteristics; compositional modification of this alloy by the addiction of extra Copper and Magnesium and study of their effects in the alloy properties; and as a final point the evaluation of gold plating capacity of the commercial alloy and the alloy modified with Copper and Magnesium. This study demonstrated that composition variations modified considerably the microstructure of the alloy and consequently its mechanical properties, as well as this plating capacity. The employed characterization techniques CA-CCA (Computer- Aided Cooling Curve Analysis), DTA (Differential Thermal Analysis), Dilatometry and optical and scanning electron microcopies where of fundamental importance to better understand the influence of chemical composition on the microstructure and properties of the Zn-Al-Cu-Mg alloy. However, it was observed that another factor of great influence in the quality of the superficial plated of this alloy is the procedure and quality of cleaning effectuated in the parts for posterior platting process.
Nos últimos anos, o setor Joalheiro vem demonstrando uma importância cada vez mais significativa no cenário econômico nacional e internacional. O Brasil aparece entre os maiores produtores de Jóias do mercado mundial, assim como, o Rio Grande do Sul entre os estados brasileiros, com destaque regional para o Município de Guaporé que têm mais de 100 fábricas, onde são produzidas peças em Folhado, Prata ou Ouro. Entretanto, vale enfatizar que a literatura disponível referente a estudos científicos voltados para o setor Joalheiro é escassa, particularmente em nível nacional. Nesse contexto, esta pesquisa tem como objetivo principal investigar a liga à base de Zn-Al-Cu-Mg que recentemente tem sido aplicada na fabricação de jóias folheadas, com a finalidade de obter informações sobre suas propriedades de interesse aos processos de fabricação e de revestimento. A metodologia experimental utilizada no desenvolvimento desse trabalho envolveu as seguintes etapas: análise dos defeitos de acabamento em semi-jóias folhadas com Ouro e Prata confeccionadas com a liga comercial à base de Zn-Al-Cu-Mg e determinação de suas características microestruturais e mecânicas; modificação composicional dessa liga pela adição extra de Cobre e Magnésio e estudo dos seus efeitos nas propriedades da mesma e por fim avaliação da capacidade de revestimento com Ouro da liga comercial e modificada pela adição de Cobre e Magnésio. Este estudo mostra que variações composicionais da liga Zn-Al-Cu-Mg modifica de forma significativa a microestrutura da referida liga e conseqüentemente suas propriedades mecânicas, bem como sua capacidade de revestimento. As técnicas de caracterização utilizadas, CA-CCA (Computer-Aided Cooling Curve Analysis), DTA (Differential Thermal Analysis), Dilatometria e Microscopias Óptica e Eletrônica de Varredura, foram fundamentais para entender melhor a influência da composição química na microestrutura e propriedades da liga à base de Zn-Al-Cu-Mg. Contudo, observou-se que um outro fator de grande influência na qualidade do revestimento dessa liga é o procedimento e qualidade de limpeza prévia efetuadas nas peças para o posterior folhamento.
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Libros sobre el tema "Al cu mg zn"

1

Huang, Ze Wen. Study of the ageing behaviour of Al-Mg-Si 6061 and Al-Zn-Mg-Cu 7075 alloys with and without lithium additions. Birmingham: University of Birmingham, 1991.

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Rahman, Asif. Determination of Mg,Zn and Cu in excreted fluids of renal patients on haemodialysis and continuous ambulatory peritoneal dialysis (CAPD). Wolverhampton: University of Wolverhampton, 1993.

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Taylor, Ronald M. Comparative baseline concentration of Ca, Mg, Na, K, Cu, Zn, Fe, Mn, Ni and Cr in the freshwater crayfish, Cambarus robustus (Cambaridae, Decapoda, Crustacea) from an acidic metal contaminated lake and circumneutral uncontaminated stream. Sudbury, Ont: Laurentian University, 1994.

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Murphy, Loretta Mary. XaAFS and EPR studies on Bovine Cu, Zn Superoxide dismutase. Manchester: University of Manchester, 1995.

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Liu, Yaxiu. Processing and properties of shape memory alloys Ti-Ni, Ti-Ni-Cu and Cu-Zn-Al. Birmingham: University of Birmingham, 2002.

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Chiri, J. M. Methanol synthesis on a Mg-doped Cu/ZnO/Al2O3 catalyst. Manchester: UMIST, 1997.

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A, Dolgin E. y Stikhotvort͡s︡eva N. A, eds. Metallogenii͡a︡ (Cu, Pb, Zn, Co, Ni) glavneĭshikh tektonicheskikh struktur Afrikano-Araviĭskoĭ platformy. Moskva: "Nedra", 1987.

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Ilczuk, Jan. Zjawiska tarcia wewnętrznego występujące podczas odwracalnej przemiany martenzytycznej stopów Cu-Zn-Al. Katowice: Uniwersytet Śląski, 1993.

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Chien, Yung-Tsen. Powder preparation, microstructural development and magnetic properties of gel-derived Mg-Mn-Zn ferrites. Manchester: University of Manchester, 1993.

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Langan, T. J. Microstructure-property relationships in Al-Cu-Li-Ag-Mg Weldalite alloys. Hampton, Va: Langley Research Center, 1991.

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Capítulos de libros sobre el tema "Al cu mg zn"

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Mürbe, Julia y Jörg Töpfer. "Mg-Cu-Zn Ferrites for Multilayer Inductors". En Progress in Nanotechnology, 141–48. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9780470588260.ch21.

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Ferragut, Rafael, A. Dupasquier, M. M. Iglesias, C. E. Macchi, Alberto Somoza y Ian J. Polmear. "Vacancy-Solute Aggregates in Al-Zn-Mg-(Cu, Ag)". En Materials Science Forum, 309–14. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-408-1.309.

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Kolb, Gernot K. H., Helmut Antrekowitsch, Daniel Pöschmann, Peter J. Uggowitzer y Stefan Pogatscher. "Effect of Interrupted Quenching on Al–Zn–Mg–Cu Alloys". En Light Metals 2017, 385–89. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51541-0_48.

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Zhao, Zhong Kui, Tie Tao Zhou, Pei Ying Liu y Chang Qi Chen. "Ageing Processes of Li-Containing Al-Zn-Mg-Cu Alloys". En Key Engineering Materials, 1605–8. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-456-1.1605.

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Jun-Hua, You, Wang Hou-Chun, Qiu Ke-Qiang y Ren Ying-Lei. "Fabrication of Mg-Cu-Zn-Y-Zr Amorphous Matrix Composites". En TMS2013 Supplemental Proceedings, 253–57. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118663547.ch32.

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Vratnica, M., Z. Cvijović, H. Peter Degischer, Guillermo C. Requena, G. Rumplmair y Marko Rakin. "Crack Growth Resistance of Overaged Al-Zn-Mg-Cu Alloys". En Materials Science Forum, 217–22. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-971-7.217.

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Du, Z. W., B. L. Shao, A. S. Liu, Z. M. Sun, X. S. Zhang, T. T. Zhou y Chang Qi Chen. "Characterization of Precipitation in Al-Zn-Mg-Cuand Li Containing Al-Zn-Mg-Cu Alloys after Isothermal Aging". En Materials Science Forum, 977–82. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.977.

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Yuan, Jie, Min Zuo, Maximilian Sokoluk, Gongcheng Yao, Shuaihang Pan y Xiaochun Li. "Nanotreating High-Zinc Al–Zn–Mg–Cu Alloy by TiC Nanoparticles". En Light Metals 2020, 318–23. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36408-3_46.

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Alali Alkhalaf, Ahmad, Anna Tesleva, Pavel Polyakov, Matthias Moschinger, Sebastian Fritsche, Iuliia Morozova, Anton Naumov, Fedor Isupov, Gonçalo Pina Cipriano y Sergio T. Amancio-Filho. "Modified Friction Stir Welding of Al–Zn–Mg–Cu Aluminum Alloy". En The Minerals, Metals & Materials Series, 43–51. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65265-4_5.

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Kawazoe, Yoshiyuki, Ursula Carow-Watamura y Dmitri V. Louzguine. "Physical, thermal and mechanical properties of Cu-Gd-Mg-Zn alloy". En Phase Diagrams and Physical Properties of Nonequilibrium Alloys, 72–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-57920-6_21.

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Actas de conferencias sobre el tema "Al cu mg zn"

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Котов, А. Д., А. В. Михайловская, М. Н. Ситкина y А. А. Борисов. "Сверхпластичность сплавов системы Al-Zn-Mg-Cu-Ni-Zr с разным содержанием Znи Mg". En Тенденции развития науки и образования. «Л-Журнал», 2017. http://dx.doi.org/10.18411/lj-30-11-2017-55.

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Ditta, Allah, Wei Lijun, Li Long, Xu Yanjin, Kashif Naseem y Wu Sujun. "Microstructure and Mechanical Properties of Spray-formed High Zn-containing Al-Zn-Mg-Cu alloy". En 2019 16th International Bhurban Conference on Applied Sciences and Technology (IBCAST - 2019). IEEE, 2019. http://dx.doi.org/10.1109/ibcast.2019.8667120.

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Hamilton, Carter, Andrew Sommers y Oleg Senkov. "Friction Stir Welding of Sc-Modified Al-Zn-Mg-Cu Alloy Extrusions". En ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67490.

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Small additions of scandium to Al-Zn-Mg-Cu 7000 series alloys can significantly improve mechanical properties and augment the strength retention at low and elevated temperatures. This research program evaluates the residual properties of Sc-modified Al-Zn-Mg-Cu alloy extrusions joined through friction stir welding (FSW). Mechanical and corrosion testing were performed on the baseline material and on panels friction stir welded at 175, 225, 250, 300, 350 and 400 RPM (all other weld parameters held constant). A thermal model of friction stir welding is developed that utilizes an energy-based scaling factor to account for tool slip. The proposed slip factor is derived from an observed, empirical relationship between the ratio of the maximum welding temperature to the solidus temperature and energy per unit length of weld. The thermal model successfully predicts the maximum welding temperatures over a range of energy levels, and the mechanical and corrosion behavior is correlated to the temperature distribution predicted by the model.
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Cozma, Antoanela, Sofia Popescu, Maria Rada, Casiana Mihut y Ariana Velciov. "DEVELOPMENT AND MINERAL CHARACTERIZATION OF MILK CHOCOLATE FORTIFIED WITH CHICKEN EGGSHELL POWDER". En 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/6.2/s25.19.

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Taking into account the fact that by fortifying chocolate, more nutritious and healthier chocolates are obtained, in this work we set out to obtain an assortment of milk chocolate with the addition of chicken eggshell powder and to evaluate its mineral intake. Practically, the purpose of this experiment is the superior valorization of eggshell waste from household activities as a mineral fortification for milk chocolate. Four types of milk chocolates were prepared with the addition of 0, 1, 2 and 4% chicken eggshell powder, which were analyzed from the point of view of Ca, Mg, Fe, Mn, Zn and Cu. The results obtained from the analysis of chocolates show an increase in the mineral concentration of milk chocolate with the increasing addition of eggshell powder: 265 � 1.724 mg/100g Ca; 124-140 mg/100g Mg; 2.947 � 3.231 mg/100g Fe; 0.569 � 0.612 mg/100g Mn; 2.407 � 2.460 mg/100g Zn and 0.940 � 0.988 mg/100g Cu. Under the conditions of the present experiment, a consumption of 50 g of chocolate with 1 - 4% eggshell powder covers a good part of the recommended daily mineral requirement: 31.47 - 86.20% Ca - for women and men; 15.21 - 22.66% Mg for women and men; 8.19 - 20.19% Fe - for men and women; 12.46 - 17.08% Mn - for women and men; 10.97 - 15.38% Zn - for men and women respectively; 52.50 - 54.89% Cu - for women and men. A possible increase in the mass of eggshell used for the mineral fortification of chocolate is possible, but this may decrease the sensory quality of the chocolate, especially in terms of texture and taste. The obtained results confirm the fact that milk chocolate fortified with 4% eggshell has a higher mineral intake than nonfortified chocolate, especially from the point of view of Ca and Mg content.
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Peycheva, Katya, Katya Peycheva, Mona Stancheva, Mona Stancheva, Stanislava Georgieva, Stanislava Georgieva, Lubomir Makedosnki y Lubomir Makedosnki. "HEAVY METALS IN WATER, SEDIMENTS AND MARINE FISHES FROM BULGARIAN BLACK SEA". En Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93d4d78bb6.88545986.

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In this study, the ecosystem marine water-sediment-biota was investigated and the pollution was assessed. The concentrations of eight elements were determined in marine water, sediments and four fish species collected from Black Sea (Varna), Bulgaria during 2013. Marine water recorded the highest concentrations of Zn (15-22 μg/L), As (1.1–1.2 μg/L) and Pb (0.7-0.8 μg/L) while Zn (31-52 μg/g), Pb (21-29 μg/g) and Cu (20-34 μg/g) and show the highest concentrations in sediments. Water and sediments showed similar spatial distribution patterns for the highest mean values of the different metals. In the analysed fish species, the highest concentration of the metals Cu and Zn were found in Trachurus Mediterrneus (0.42 mg/kg w.w) and in Sprattus Sprattus (12.7 mg/kg w.w), respectively while the heavy metals As and Hg were found with maximum values in Pseta Maxima (3.99 mg/kg w.w and 0.08 mg/kg w.w respectively). The results from this study were compared with our data for a previous period (2004-2006) and they show decrease in the levels of heavy metal.
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Peycheva, Katya, Katya Peycheva, Mona Stancheva, Mona Stancheva, Stanislava Georgieva, Stanislava Georgieva, Lubomir Makedosnki y Lubomir Makedosnki. "HEAVY METALS IN WATER, SEDIMENTS AND MARINE FISHES FROM BULGARIAN BLACK SEA". En Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315c12f92.

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In this study, the ecosystem marine water-sediment-biota was investigated and the pollution was assessed. The concentrations of eight elements were determined in marine water, sediments and four fish species collected from Black Sea (Varna), Bulgaria during 2013. Marine water recorded the highest concentrations of Zn (15-22 μg/L), As (1.1–1.2 μg/L) and Pb (0.7-0.8 μg/L) while Zn (31-52 μg/g), Pb (21-29 μg/g) and Cu (20-34 μg/g) and show the highest concentrations in sediments. Water and sediments showed similar spatial distribution patterns for the highest mean values of the different metals. In the analysed fish species, the highest concentration of the metals Cu and Zn were found in Trachurus Mediterrneus (0.42 mg/kg w.w) and in Sprattus Sprattus (12.7 mg/kg w.w), respectively while the heavy metals As and Hg were found with maximum values in Pseta Maxima (3.99 mg/kg w.w and 0.08 mg/kg w.w respectively). The results from this study were compared with our data for a previous period (2004-2006) and they show decrease in the levels of heavy metal.
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Uđilanović, M. Z., S. D. Vasiljević y Z. S. Šimšić. "QUANTIFICATION OF ESSENTIAL ELEMENTS IN PAPAVER RHOEAS L. AND PAPAVER SOMNIFERUM". En 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac, 2021. http://dx.doi.org/10.46793/iccbi21.133u.

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Plants are very important for proper human nutrition, so the content of essential elements was investigated in two poppy species. Essential elements such as Ca, Na, K, Mg, Fe, Cu, Co, Mn, Mo and Zn play a vital role in various biological processes. Samples of roots, stems, leaves and seeds of Papaver rhoeas L. and Papaver somniferum were acid dissolved and analyzed by inductively coupled plasma optical emission spectrometer (ICP-OES). The highest concentration of Ca was contained in leaf samples ML1 and ML2 with values of 38618.90 and 33320.15 mg/kg, the root of Papaver rhoeas L. had the highest concentration of Na with a value of 1651.07 mg/kg, while the leaf had the highest concentration of Mg of 4400.04 mg/kg. The leaf Papaver somniferum contains the highest concentration of K with a value of 61595.90 mg/kg, the root samples MK1 and MK2, both poppies had the highest Fe of 1254.21 and 1620.16 mg/kg. Seeds of both poppies, Papaver rhoeas L. and Papaver somniferum, contain the highest concentration of Cu with values of 30.57 and 22.20 mg/kg, Mn with values of 71.99 and 58.10 mg/kg and Zn with values of 76.99 and 82.09 mg/kg. The Co content in all samples was low.
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Elhefnawey, Maged, L. Li, G. L. Shuai, Z. Li, M. Nemat-Alla y D. T. Zhang. "On Improvement of Microhardness for Al-Zn-Mg-Cu Alloy via Cold ECAP". En 2020 5th International Conference on Control, Robotics and Cybernetics (CRC). IEEE, 2020. http://dx.doi.org/10.1109/crc51253.2020.9253486.

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Branković, Snežana, Radmila Glišić, Duško Brković, Gorica Đelić, Filip Grbović, Vera Rajičić, Marija Marin, Marijana Vasić y Jelena Bogosavljević. "BIOAKUMULACIONI I TRANSLOKACIONI POTENCIJAL VRSTE „HOLCUS LANATUS“ L. NA JALOVIŠTU RUDNIK DOO „RUDNIK“". En XXVII savetovanje o biotehnologiji. University of Kragujevac, Faculty of Agronomy, 2022. http://dx.doi.org/10.46793/sbt27.291b.

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The aim of this study was to determine the concentration of some metals (Mn, Ni, Fe, Cu, Zn, Cr, Ca, Mg, Pb, Cd) in the soil and species of H. lanatus L. on the tailings and flotation of the mine DOO "Rudnik". Concentrations in the soil were: Pb - higher than the maximum allowed, limit and remediation values; Cd, Cu and Cr - higher than the maximum allowed and limit values, and Ni and Zn higher than the limit values (according to the regulations of the Republic of Serbia). Results suggest the possibility of using the roots of H. lanatus in the bioaccumulation of metals Ni, Mg and Cd, as well as the aboveground parts of this plant species in the accumulation and phytoextraction of Cd.
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Juliastuti, Sri Rachmania, Farah Salsabila, Fairuza Fasya Rahadisty, Lailatul Qadariyah y Siti Nurkhamidah. "Production of Cu-EDTA, Zn-EDTA, CuZn-EDTA as a Micronutrient Fertilizer and its Application to Lettuce". En 4th International Seminar on Fundamental and Application of Chemical Engineering. Switzerland: Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-opjm7m.

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Plants need two types of nutrients, which are macronutrients and micronutrients. Micronutrient needed by plants in small concentration (≤ 100 ppm) i.e. Cu and Zn. This study aims to determine the best composition ratio of Cu:EDTA, Zn:EDTA, and Cu:Zn:EDTA for making the micronutrients, determine the effect of Cu and Zn on lettuce (Lactuca sativa L), and determine the most effective type of micronutrient fertilizer and its concentration for lettuce growth. It was started by dissolving materials with 200 ml distilled water, then stirred and heated at 70-80°C for two hours. After that, the solution was precipitated for two days at room temperature. Methanol was added only before precipitating CuZn-EDTA. The precipitate or micronutrient crystals of Cu-EDTA, Zn-EDTA, and CuZn-EDTA were then filtered and dried in a desiccator for three days. Each of micronutrient crystal was dissolved into 25 ml water then the lettuce will be sprayed with micronutrient solution for two and three sprays once a week. Observations related to the quantity of leaves, plant length, and leaf width were carried out for 25 days and then plant harvested and weighed. The result shows that the best compotition ratio for making micronutrients were Cu:EDTA (1:1.85)w/w; Zn:EDTA (1:3.43)w/w; and Cu:Zn:EDTA (1:1.6:3.85)w/w/w. Concentration of micronutrient solution applied were 5000 and 1000 ppm. Respectively for each concentration, micronutrient CuZn-EDTA affected the leaves quantity growth with the slope of 0.0655 and 0.0642; and yields (g/cm2) with the slope of 0.495 and 0.46. Zn-EDTA had an effect on plant length growth with a slope of 0.1525 and 0.091; and leaf width growth with a slope of 0.0216 and 0.0111. Cu and Zn contained in lettuce leaves then analyzed and was known for Cu-EDTA, Cu and Zn contained (mg/kg) respectively were 37.78 and 50.68; for Zn-EDTA were 32.8 and 61.25; for CuZn-EDTA were 33.23 and 48.16 (mg/kg). The metal content analyzed in lettuce leaves is not suitable for consumption because it exceeds the maximum limit written on the Decree of the Directorate General of POM No 03725/B/SK/VII/89. Application of fertilizer should be more diluted to less than the maximum limit.
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Informes sobre el tema "Al cu mg zn"

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Senkov, O. N. y Y. Q. Cheng. Ab Initio Molecular Dynamics Simulation of the Amorphous Structure of Ca-Mg-Cu and Ca-Mg-Zn Alloys (Preprint). Fort Belvoir, VA: Defense Technical Information Center, agosto de 2012. http://dx.doi.org/10.21236/ada566094.

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Young, G. A. y J. R. Scully. Factors Affecting the Hydrogen Environment Assisted Cracking Resistance of an AL-Zn-Mg-(Cu) Alloy. Office of Scientific and Technical Information (OSTI), abril de 2002. http://dx.doi.org/10.2172/820717.

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G.A. Young y J.R. Scully. Factors Affecting the Hydrogen Environment Assisted Cracking Resistance of an Al-Zn-Mg-(Cu) Alloy. Office of Scientific and Technical Information (OSTI), septiembre de 2001. http://dx.doi.org/10.2172/821686.

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Савосько, Василь Миколайович, Юлія Віліївна Бєлик, Юрій Васильович Лихолат, Герман Хайльмейер y Іван Панасович Григорюк. Macronutrients and Heavy Metals Contents in the Leaves of Trees from the Devastated Lands at Kryvyi Rih District (Central Ukraine). E3S Web of Conferences, 2020. http://dx.doi.org/10.31812/123456789/3785.

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This research was performed at Petrovsky waste rock dump, the Central part of the Kryvyi Rih iron-ore & metallurgical district (Dnipropetrovsk region, Ukraine). The macronutrients (K, Ca, Mg, P and S) and heavy metals (Fe, Mn, Zn, Cu, Pb and Cd) contents in the leaves of three species of the trees (Ash-leaved maple, Silver Birch and Black locust) that were collected on devastated lands were assessed. It was established that trees which grow on the Petrovsky dump take place under evident shortage of nutrients (especially K and P) and excess of metals (especially Fe, Mn and Zn). It is revealed that Ash-leaved maple and Black locust are more resistant to the geochemical conditions of devastated lands. In this regard, these species of trees can be recommended for forest restoration & reforestation on devastated lands.
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G.A. Young, Jr y J.R. Scully. The Effects of Test Temperature, Temper, and Alloyed Copper on the Hydrogen-Controlled Crack Growth Rate of an Al-Zn-Mg-(Cu) Alloy. Office of Scientific and Technical Information (OSTI), septiembre de 2000. http://dx.doi.org/10.2172/821950.

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Anderson, Andrew y Mark Yacucci. Inventory and Statistical Characterization of Inorganic Soil Constituents in Illinois: Appendices. Illinois Center for Transportation, junio de 2021. http://dx.doi.org/10.36501/0197-9191/21-007.

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This report presents detailed histograms of data from the Regulated Substances Library (RSL) developed by the Illinois Department of Transportation (IDOT). RSL data are provided for state and IDOT region, IDOT district, and county spatial subsets to examine the spatial variability and its relationship to thresholds defining natural background concentrations. The RSL is comprised of surficial soil chemistry data obtained from rights-of-way (ROW) subsurface soil sampling conducted for routine preliminary site investigations. A selection of 22 inorganic soil analytes are examined in this report: Al, Sb, As, Ba, Be, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Hg, Ni, K, Se, Na, Tl, V, and Zn. RSL database summary statistics, mean, median, minimum, maximum, 5th percentile, and 95th percentile, are determined for Illinois counties and for recognized environmental concern, non-recognized environmental concern, and de minimis site contamination classifications.
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Савосько, Василь Миколайович, Юлія Віліївна Бєлик, Юрій Васильович Лихолат, Герман Хайльмейер y Іван Панасович Григорюк. Macronutrients and Heavy Metals Contents in the Leaves of Trees from the Devastated Lands at Kryvyi Rih District (Central Ukraine). КДПУ, 2020. http://dx.doi.org/10.31812/123456789/4151.

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The relevance of these studies was due to the need to clarify the biogeochemical characteristics of woody plant species that grow naturally on devastated lands. The object of this paper: to carry out a comparative analysis of macro nutrients and heavy metals contents in the leaves of trees spontaneously sprouting on the devastated lands at the Kryvyi Rih District. This research was performed at Petrovsky waste rock dump, the Central part of the Kryvyi Rih iron-ore & metallurgical district (Dnipropetrovsk region, Ukraine). The macronutrients (K, Ca, Mg, P and S) and heavy metals (Fe, Mn, Zn, Cu, Pb and Cd) contents in the leaves of three species of the trees (Ash-leaved Maple Acer negundo L., Silver Birch Betula pendula Roth. and Black Locust Robinia pseudoacacia L.) that were collected on devastated lands were assessed. It was established that trees which grow on the Petrovsky dump take place under evident shortage of nutrients (especially K and P) and excess of metals (especially Fe, Mn and Zn). Taking into account the revealed values of macronutrients optimal concentrations and revealed the heavy metals lowest content in the leaves, we assume that Ash-leaved maple and Black locust (compared to the Silver Birch) are more resistant to the geochemical conditions of devastated lands.
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Savosko, V., I. Komarova, Yu Lykholat, E. Yevtushenko y T. Lykholat. Predictive model of heavy metals inputs to soil at Kryvyi Rih District and its use in the training for specialists in the field of Biology. IOP Publishing, 2021. http://dx.doi.org/10.31812/123456789/4511.

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The importance of our research is due to the need to introduce into modern biological education methods of predictive modeling which are based on relevant factual material. Such an actual material may be the entry of natural and anthropic heavy metals into the soil at industrial areas. The object of this work: (i) to work out a predictive model of the total heavy metals inputs to soil at the Kryvyi Rih ore-mining & metallurgical District and (ii) to identify ways to use this model in biological education. Our study areas are located in the Kryvyi Rih District (Dnipropetrovsk region, Central Ukraine). In this work, classical scientific methods (such as analysis and synthesis, induction and deduction, analogy and formalization, abstraction and concretization, classification and modelling) were used. By summary the own research results and available scientific publications, the heavy metals total inputs to soils at Kryvyi Rih District was predicted. It is suggested that the current heavy metals content in soils of this region due to 1) natural and 2) anthropogenic flows, which are segmented into global and local levels. Predictive calculations show that heavy metals inputs to the soil of this region have the following values (mg ⋅ m2/year): Fe – 800-80 000, Mn – 125-520, Zn – 75-360, Ni – 20-30, Cu – 15-50, Pb – 7.5-120, Cd – 0.30-0.70. It is established that anthropogenic flows predominate in Fe and Pb inputs (60-99 %), natural flows predominate in Ni and Cd inputs (55-95 %). While, for Mn, Zn, and Cu inputs the alternate dominance of natural and anthropogenic flows are characterized. It is shown that the predictive model development for heavy metals inputs to soils of the industrial region can be used for efficient biological education (for example in bachelors of biologists training, discipline "Computer modelling in biology").
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Савосько, Василь Миколайович, Ірина Олександрівна Комарова, Юрій Васильович Лихолат, Едуард Олексійович Євтушенко, y Тетяна Юріївна Лихолат. Predictive Model of Heavy Metals Inputs to Soil at Kryvyi Rih District and its Use in the Training for Specialists in the Field of Biology. IOP Publishing, 2021. http://dx.doi.org/10.31812/123456789/4266.

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The importance of our research is due to the need to introduce into modern biological education methods of predictive modeling which are based on relevant factual material. Such an actual material may be the entry of natural and anthropic heavy metals into the soil at industrial areas. The object of this work: (i) to work out a predictive model of the total heavy metals inputs to soil at the Kryvyi Rih ore-mining & metallurgical District and (ii) to identify ways to use this model in biological education. Our study areas are located in the Kryvyi Rih District (Dnipropetrovsk region, Central Ukraine). In this work, classical scientific methods (such as analysis and synthesis, induction and deduction, analogy and formalization, abstraction and concretization, classification and modelling) were used. By summary the own research results and available scientific publications, the heavy metals total inputs to soils at Kryvyi Rih District was predicted. It is suggested that the current heavy metals content in soils of this region due to 1) natural and 2) anthropogenic flows, which are segmented into global and local levels. Predictive calculations show that heavy metals inputs to the soil of this region have the following values ( mg ∙ m ଶ year ⁄ ): Fe – 800-80 000, Mn – 125-520, Zn – 75-360, Ni – 20-30, Cu – 15-50, Pb – 7.5-120, Cd – 0.30-0.70. It is established that anthropogenic flows predominate in Fe and Pb inputs (60-99 %), natural flows predominate in Ni and Cd inputs (55-95 %). While, for Mn, Zn, and Cu inputs the alternate dominance of natural and anthropogenic flows are characterized. It is shown that the predictive model development for heavy metals inputs to soils of the industrial region can be used for efficient biological education (for example in bachelors of biologists training, discipline “Computer modelling in biology”).
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Kidder, J. A., M. B. McClenaghan, M I Leybourne, M. W. McCurdy, P. Pelchat, D. Layton-Matthews, C. E. Beckett-Brown y A. Voinot. Geochemical data for stream and groundwaters around the Casino Cu-Au-Mo porphyry deposit, Yukon (NTS 115 J/10 and 115 J/15). Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328862.

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This open file reports geochemical data for stream and groundwater samples collected around the Casino porphyry Cu-Au-Mo deposit, one of the largest and highest-grade deposits of its kind in Canada. The calc-alkaline porphyry is hosted in a Late Cretaceous quartz monzonite and associated breccias in the unglaciated region of west central Yukon. Water chemistry around the deposit was investigated because: (i) the deposit has not yet been disturbed by mining; (ii) the deposit was known to have metal-rich waters in local streams; and (iii) the deposit has atypically preserved ore zones. Stream water samples were collected at 22 sites and groundwater samples were collected from eight sites. Surface and groundwaters around the Casino deposit are anomalous with respect to Cd (up to 5.4 µg/L), Co (up to 64 µg/L), Cu (up to 1657 µg/L), Mo (up to 25 µg/L), As (up to 17 µg/L), Re (up to 0.7 µg/L), and Zn (up to 354 µg/L) concentrations. The stable isotopes of O and H of the groundwaters are essentially identical to the surface waters and plot close to the local and global meteoric water lines, indicating that the waters represent modern recharge, consistent with the generally low salinities of all the waters (total dissolved solids range from 98 to 1320 mg/L). Sulfur and Sr isotopes are consistent with proximal waters interacting with the Casino rocks and mineralization; a sulfide-rich bedrock sample from the deposit has delta-34S = -1.2 permille and proximal groundwaters are only slightly heavier (-0.3 to 3.1 permille). These geochemical and isotopic results indicate that surface water geochemistry is a suitable medium for mineral exploration for porphyry-style mineralization in the Yukon, and similar unglaciated regions in Canada. The atypical geochemical signature (Mo, Se, Re, As, Cu) of these types of deposits are typically reflected in the water chemistry and S isotopes provide a more local vectoring tool.
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