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Tesi sul tema "Minerals"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Lammers, Kristin D. "Carbon dioxide sequestration by mineral carbonation of iron-bearing minerals." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/339925.

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Chemistry<br>Ph.D.<br>Carbon dioxide (CO2) is formed when fossil fuels such as oil, gas and coal are burned in power producing plants. CO2 is naturally found in the atmosphere as part of the carbon cycle, however it becomes a primary greenhouse gas when human activities disturb this natural balanced cycle by increasing levels in the atmosphere. In light of this fact, greenhouse gas mitigation strategies have garnered a lot of attention. Carbon capture, utilization and sequestration (CCUS) has emerged as a possible strategy to limit CO2 emissions into the atmosphere. The technology involves cap

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2

Frost, Ray. "Studies of selected minerals, mineral surfaces and their colloidal dispersions." Thesis, Queensland University of Technology, 2001.

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This thesis is about the molecular structure of minerals, their surface modification and the dispersion of selected minerals of a ceramic nature as sols and gels. The theme that permeates through this work and connects the different elements of the work is the search for fundamental knowledge and understanding of mineral structure and mineral surface structure. The underlying principal is that of molecular structure of surfaces and the changes in that molecular structure through modification of the surfaces. There are seven research divisions of study reported in this thesis: (A) Molecu

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3

Adams, Adrian Richard. "The degradation of atrazine by soil minerals : effects of drying mineral surfaces." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86515.

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Thesis (MScAgric)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The herbicide atrazine (ATZ, 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine) has been identified as an environmental endocrine disruptor and possible human carcinogen. The presence of atrazine, along with its degradation products, in soils and water supplies therefore raises concern. Atrazine biodegradation in soils is well-covered to date, however, atrazine degradation by abiotic mineral surfaces, and the chemical mechanism by which it occurs, is not fully understood. Furthermore, with a changing global climate, the

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4

Teixeira, Alete Paixão. "Determinação de elementos essenciais em arroz empregando espectrometria de fluorescência de raios X de energia dispersiva." reponame:Repositório Institucional da UFBA, 2010. http://www.repositorio.ufba.br/ri/handle/ri/9897.

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71f.<br>Submitted by Ana Hilda Fonseca (anahilda@ufba.br) on 2013-04-09T13:15:43Z No. of bitstreams: 1 dissertação ALETE_definitiva_110330.pdf: 1412727 bytes, checksum: c409be4d388a7ed5944c1d0866387a9d (MD5)<br>Approved for entry into archive by Ana Hilda Fonseca(anahilda@ufba.br) on 2013-04-19T14:50:36Z (GMT) No. of bitstreams: 1 dissertação ALETE_definitiva_110330.pdf: 1412727 bytes, checksum: c409be4d388a7ed5944c1d0866387a9d (MD5)<br>Made available in DSpace on 2013-04-19T14:50:36Z (GMT). No. of bitstreams: 1 dissertação ALETE_definitiva_110330.pdf: 1412727 bytes, checksum: c409be4d388a7ed5

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5

Ur, Rehman Bilal. "Modelling a Mineral Froth Flotation Process : Case Study: Minerals process at Boliden AB." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-51600.

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We present an approach to model the dynamic of a copper flotation process. The conventional approach of system identification is applied to model the dynamics. In this research, experiments are performed to collect process data of determined input and output variables. It is followed by data pre-processing to handle outliers and to remove high frequency disturbances. Simulation and validation responses of linear estimated models, which captured the dynamic of the process, are presented. The long term goal is to use estimated models to design a models-based control system.

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6

DiFeo, Anthony. "Heterocoagulation of sulphide minerals." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0032/NQ64547.pdf.

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7

Higgins, I. "Sialons from natural minerals." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375599.

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8

Needham, Sarah Jane. "Creatures, fabrics and minerals." Thesis, University of Liverpool, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426129.

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9

Duncan, Helen. "Erosion corrosion by minerals." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278290.

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10

Rêgo, Eric Siciliano. "Variation of minerals and clay minerals recorded in the Neo-Tethys (central Turkey): new evidence of climatic changes during the middle Eocene." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/21/21136/tde-23032018-152550/.

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Abstract (sommario):

Minerals and clay minerals in continental sedimentary successions are valuable tools for reconstructing past environmental conditions. Given the state of preservation of clays minerals, it is possible to identify how they were formed, providing clues about continental weathering conditions (inherited minerals) and geochemical conditions in the water column (neoformed or transformed). This study presents new mineralogical data from the Baskil section, a highly preserved middle Eocene succession in the Neo-Tethys (central Turkey). A gradual shift from a well-crystalline illite and chlorite inter

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11

Meirelles, Rodrigo Lemos. "Efeitos da suplementação de antioxidantes naturais em tecidos bovinos da raça Brangus." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-26052009-101756/.

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Vinte e oito bovinos machos inteiros da raça Brangus foram utilizados para se determinar os efeitos da estabilidade oxidativa no músculo e no fígado, comparando a utilização de fonte orgânica e inorgânica de selênio e extrato de alecrim, com base na análise da concentração de selênio no fígado e no soro, na análise da atividade da enzima glutationa peroxidase, da enzima superóxido dismutase e da catalase no fígado, e na análise de TBARS (substâncias reativas ao ácido 2-tio-barbitúrico) no músculo. Os tratamentos foram: 1) Controle - sem suplementação de selênio ou de extrato de alecrim; 2) Se

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12

Afonso, Esther Ramalho. "Impacto de estratégias nutricionais no custo do manejo dos dejetos de suínos." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/10/10135/tde-31082015-165733/.

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O estudo tem como objetivo propor método de avaliação de efeito econômico do manejo dos dejetos com a utilização de diferentes estratégias nutricionais de suínos em crescimento e terminação. Especificamente, procura-se: i) Calcular as margens de comercialização para as diferentes estratégias nutricionais; ii)Avaliar o efeito econômico das diferentes estratégias nutricionais na excreção e aproveitamento de nutrientes pelos animais; iii) Valorar o consumo de água dos animais; iv) Valorar os dejetos gerados pelos suínos em relação ao seu potencial uso como fertilizante orgânico; v) Avaliar o impa

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13

Gwamba, John. "Pearl millet : influence of mineral biofortification and simple processing technologies on minerals and antinutrients." Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60808.

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Pearl millet is an important staple food in rural Africa. However, the mineral bioavailability of pearl millet is low due to its high content of antinutrients, particularly phytate. This research investigated the effects of mineral biofortification, steeping/lactic acid fermentation and parboiling alone and in combination with abrasive decortication of pearl millet grain on its mineral and antinutrient contents. Six normal varieties and two mineral biofortified hybrids were investigated. There was considerable variability in mineral content among the varieties. Iron content ranged from 3.0 to

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14

Dydak, Sara M. "The Hydraulic Sorting of Light and Heavy Minerals, Heavy-Mineral Concentrations, and Grain Size." W&M ScholarWorks, 1991. https://scholarworks.wm.edu/etd/1539617625.

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15

Lener, Edward F. "Mineral Chemistry of Heavy Minerals in the Old Hickory Deposit, Sussex and Dinwiddie Counties, Virginia." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35803.

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The Old Hickory is the largest of a series of Pliocene (?) age heavy mineral sand deposits in Virginia and North Carolina. The high density of heavy minerals allows for selective concentration during transport and deposition. Under the right conditions, placers of considerable size can be formed. The elliptically shaped ore body of the Old Hickory Deposit extends in a North - South direction and is approximately 13 km (8 miles) long and up to 2.5 km (1.5 miles) wide, with an average thickness of 6.5 m (20 feet). The deposit lies along the Fall Zone, where a thin wedge of Cenozoic Coastal P

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16

Kotler, Julia Michelle. "Biosignature storage in sulfate minerals- synthetic and natural investigations of the jarosite group minerals." The University of Montana, 2009. http://etd.lib.umt.edu/theses/available/etd-08062009-143516/.

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The discovery of jarosite on Mars in 2004 generated increased interest in the properties of the mineral related to the search for life on other planets. Several studies indicate that the formation of jarosite can be linked to biological activity on Earth and biomolecules such as amino acids have been found associated with terrestrial jarosite samples. A series of natural and synthetic investigations using different jarosite end-members has been conducted and is presented in this dissertation to investigate the possibility that jarosite can store biosignatures. Natural samples were analyzed by

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17

Silva, Rafael Cipriano da. "Intemperismo de minerais de um remineralizador." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-01082016-171821/.

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A remineralização é uma prática antiga que está associada a aplicação de pós de rocha no solo visando a melhoria das propriedades edáficas e por fim o aumento da produtividade, associado também a redução dos custos de produção, uma vez que os remineralizadores possuem menor preço comparado com fertilizantes sintéticos solúveis. Porém ainda existem divergências nos resultados obtidos com o uso de remineralizadores, por vezes associados a dificuldade na descrição e controle dos fatores que podem interferir no processo, como clima, características do solo e do remineralizador empregado. Esta tese

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18

Bachmaf, Samer. "Uranium sorption on clay minerals." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2010. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-62404.

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The objective of the work described in this thesis was to understand sorption reactions of uranium occurring at the water-clay mineral interfaces in the presence and absence of arsenic and other inorganic ligands. Uranium(VI) removal by clay minerals is influenced by a large number of factors including: type of clay mineral, pH, ionic strength, partial pressure of CO2, load of the sorbent, total amount of U present, and the presence of arsenate and other inorganic ligands such as sulfate, carbonate, and phosphate. Both sulfate and carbonate reduced uranium sorption onto IBECO bentonite due to

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19

Crawford, R. J. "Interparticle forces in clay minerals." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291033.

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20

Humes, R. "Interparticle forces in clay minerals." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370276.

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21

Hjeltström, Anna. "Copper minerals under the microscope." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-243049.

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From many perspectives copper is a very important metal for the modern society. It can be found in everything from jewellery to electronics. For this reason it is very important for geologists to be able to develop efficient methods for identification, characterisation, extraction and processing of copper. One method for the identification of copper bearing minerals is ore microscopy which has been used in this paper along with a general introduction. Samples from the study collection of the Department of Earth Sciences and the area of Långban and Månhöjden have been examined, documented and d

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22

Nawasreh, Mohammed Khair Assa'd. "Investigations of Jordanian industrial minerals." Thesis, Cardiff University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365618.

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23

Oganov, Artem Romaevich. "Computer simulation studies of minerals." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271656.

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24

Koga, Kenneth Tadao 1969. "Kinetic processes of mantle minerals." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/69187.

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Thesis (Ph. D.)--Joint Program in Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), February 2000.<br>"September 1999."<br>Includes bibliographical references.<br>This dissertation discusses the experimental results designed to constrain the processes of MORB generation. The main focus of this study is to investigate the location and the related processes of the transformation boundary from spinel to garnet peridotite facies at subsolidus conditions, because the presence of garnet in melting

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25

Bahri-Esfahani, Jaleh. "Fungal transformation of phosphate minerals." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/944bbfa4-4899-429c-be2b-b057d2d10773.

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26

Morrison, Shaunna M., and Shaunna M. Morrison. "Crystal Chemistry of Martian Minerals." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625376.

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The NASA Mars Science Laboratory (MSL) rover, Curiosity, began exploring Gale crater, Mars in August, 2012 with the primary goal of assessing the past and present habitability of the martian surface. To meet this goal, Curiosity is equipped with an advanced suite of scientific instruments capable of investigating the geology, geochemistry, and atmospheric conditions on Mars. Among these instruments is the CheMin (Chemistry and Mineralogy) X-ray diffractometer whose function is to identify mineral phases present in sediments and rocks by means of X-ray diffraction (XRD). Characterizing the mi

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27

Down, Sarah. "Māori and Minerals: Debating Rights." Phd thesis, Canberra, ACT : The Australian National University, 2018. http://hdl.handle.net/1885/149166.

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The last decade has seen the government in Aotearoa New Zealand place greater economic focus on exploiting mineral resources. As a result, the matter of Māori rights and interests in relation to these resources is of increased relevance and has become a highly charged national issue. The Waitangi Tribunal (‘Tribunal’) has released a number of reports since 1991 that discuss and make recommendations on Māori rights in relation to various mineral resources including pounamu (greenstone), petroleum and gold. This thesis critically analyses the jurisprudence and associated discourse developed by t

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28

Martens, Wayde Neil. "The vibrational spectroscopy of minerals." Thesis, Queensland University of Technology, 2004. https://eprints.qut.edu.au/15940/1/Wayde_Martens_Thesis.pdf.

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This thesis focuses on the vibrational spectroscopy of the aragonite and vivianite arsenate minerals (erythrite, annabergite and hörnesite), specifically the assignment of the spectra. The infrared and Raman spectra of cerussite have been assigned according to the vibrational symmetry species. The assignment of satellite bands to 18O isotopes has been discussed with respect to the use of these bands to the quantification of the isotopes. Overtone and combination bands have been assigned according to symmetry species and their corresponding fundamental vibrations. The vibra

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29

Martens, Wayde Neil. "The vibrational spectroscopy of minerals." Queensland University of Technology, 2004. http://eprints.qut.edu.au/15940/.

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This thesis focuses on the vibrational spectroscopy of the aragonite and vivianite arsenate minerals (erythrite, annabergite and hörnesite), specifically the assignment of the spectra. The infrared and Raman spectra of cerussite have been assigned according to the vibrational symmetry species. The assignment of satellite bands to 18O isotopes has been discussed with respect to the use of these bands to the quantification of the isotopes. Overtone and combination bands have been assigned according to symmetry species and their corresponding fundamental vibrations. The vibrational spectra

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30

Balfagón-Romeo, Aitor. "Nutritional approach to mineral over-supplementation in grow-finish pigs : organic trace minerals and phosphorus body accretion." Lexington, Ky. : [University of Kentucky Libraries], 2006. http://lib.uky.edu/ETD/ukyansc2006t00463/ABalfagon.pdf.

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Thesis (M.S.)--University of Kentucky, 2006.<br>Title from document title page (viewed on August 22, 2006). Document formatted into pages; contains: x, 99 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 90-98).

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31

Tibiriçá, Luciana Gonçalves. "Aspectos econômicos e sociais da mineração em Goiás, com ênfase na extração de areia." Universidade Federal de Goiás, 2017. http://repositorio.bc.ufg.br/tede/handle/tede/7584.

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Submitted by Cássia Santos (cassia.bcufg@gmail.com) on 2017-07-17T10:48:59Z No. of bitstreams: 2 Tese - Luciana Gonçalves Tibiriçá - 2017.pdf: 6686915 bytes, checksum: c0dc9c3a9ceb807167d37d609bd0cd3f (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-07-17T11:22:45Z (GMT) No. of bitstreams: 2 Tese - Luciana Gonçalves Tibiriçá - 2017.pdf: 6686915 bytes, checksum: c0dc9c3a9ceb807167d37d609bd0cd3f (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made availa

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32

Jones, Alison. "Ionic mobility in stuffed-silica minerals." Thesis, Open University, 2000. http://oro.open.ac.uk/19720/.

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Using a combination of dielectric spectroscopy and atomistic computer simulation techniques, the dynamical behaviour of loosely bound cations in the stuffed-silica minerals nepheline, yoshiokaite and ß-eucryptite has been investigated. The investigation has been extended to include the feldspar minerals albite, K-feldspar and anorthite. The low-frequency dielectric properties of all of the minerals have been investigated from room temperature to 1100 K. At each temperature, the dielectric constant, conductivity and dielectric loss were determined over a range of frequencies from 100 Hz to 10 M

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33

Cumbane, Antonio Jose. "Microwave treatment of minerals and ores." Thesis, University of Nottingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396800.

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34

Mookherjee, Mainak. "Order-disorder in hydrogen-bearing minerals." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619612.

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35

Myers, Eva Rebecca. "Al/Si ordering in silicate minerals." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624192.

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36

Jakeways, Claire Vanessa. "Transformation-induced anelasticity in mantle minerals." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611868.

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37

Araizi, Paris-Kavalan. "Accelerated carbonation of wastes and minerals." Thesis, University of Greenwich, 2015. http://gala.gre.ac.uk/21536/.

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Accelerated carbonation technology (ACT) could be used for the stabilisation of hazardous wastes, remediation of contaminated soils and re-use/recycling of various waste streams. ACT has also potential for storing anthropogenic CO2 emissions into mineral silicates and alkaline waste residues via mineral or waste carbonation. Compared to ocean and geological storage, mineral and waste carbonation offer several advantages such as long-term storage and low monitoring requirements. Currently, the biggest challenge of mineral carbonation is the low conversion rate of calcium and magnesium-based min

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38

Xu, Yuping. "Interactions of heavy metals with minerals /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487856076412928.

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Cymes, Brittany Allison. "Catalytic Properties of Novel Microporous Minerals." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1587730697926361.

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40

Richardson, Stephen. "Sulphide ore minerals : surface chemical properties." Thesis, Aston University, 1988. http://publications.aston.ac.uk/8068/.

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The surfaces of iron-containing sulphide minerals were oxidised by a range of inorganic oxidants, and the resultant surface alteration products studied using various spectroscopic techniques. The characterisation of surface oxidation is relevant to the alteration of ores in nature and their behaviour during flotation and leaching, of importance to the metallurgical industry. The sulphides investigated included pyrite (FeS2), hexagonal pyrrhotine (Fe9S10), monoclinic pyrrhotine (Fe7Se), violarite (FeNi2S4), pentlandite ((FeiNi)9Se), chalcopyrite (CuFeS2) and arsenopyrite (FeAsS). The surfaces w

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41

Ahmad, Mushtaque. "Persulfate activation by major soil minerals." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Thesis/Fall2008/m_ahmad_032409.pdf.

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Thesis (M.S. in environmental engineering)--Washington State University, December 2008.<br>Title from PDF title page (viewed on Apr. 17, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 15-18).

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Jones, Alison. "Ionic mobility in stuffed-silica minerals." n.p, 2001. http://library7.open.ac.uk/abstracts/page.php?thesisid=49.

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43

Gillings, Hayley S. "Surface-modified minerals for radionuclide sequestration." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/33781.

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This thesis is concerned with experiments designed to identify materials to increase the utility of the Sellafield Ion Exchange Plant (SIXEP) process. Clinoptilolite, ZSM-5, vermiculite and kaolinite have been surface modified by grafting with APTES, TMSPE and TMSPETT ligands using varying grafting times (1-24 h), ligand concentrations (1-3 mmol) and solvents with different polarities (with dielectric constant between 1.9 80). Materials before and after grafting were analysed using long and short range techniques including elemental analysis (CHN), powder X-ray diffraction (PXRD), scanning ele

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44

Kapitulcinova, Dana. "Cyanobacteria-mineral interactions : Laboratory investigation on the colonisation and weathering of common phosphate and silicate minerals." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520234.

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45

Gimeno, Torrente Domingo. "Estudio geológico y metalogenético de los materiales de la cuenca paleozoica de la región del Sarrabus." Doctoral thesis, Universitat de Barcelona, 1989. http://hdl.handle.net/10803/669668.

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Abstract (sommario):

Este trabajo de tesis forma parte de una colaboración de carácter internacional entre el Departamento de Geoquímica, Petrologia y Prospección Geológica de la Universidad de Barcelona y el lstituto di Giacimenti Minerari (IGM) della Facoltà di Ingegneria dell ‘Università di Cagliari, Italia. Hasta el momento en que se decidió emprender emprender este trabajo (finales de 1982), una de las principales líneas de investigación consistía en la prospección, estudio y valoración de los recursos metálicos de Cataluña, gracias a una extensa campaña de exploración geoquímica y mineralógica que perseguía

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46

Speks, Amanda. "The import(ance) of conflict minerals : An ideal type analysis of the EU’s regulation on conflict minerals." Thesis, Försvarshögskolan, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-8355.

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Abstract (sommario):

The purpose of this study is to determine to what extent the European Union (EU) functions as a market power in the case of conflict mineral regulation. Previous research by Partzsch has shown that the EU response to conflict minerals only somewhat qualifies for the EU to be seen as a normative power. There appears to be a clash between the norms of sustainable development and economic development, which could explain why the EU does not fully qualify as a normative power. Another theoretical framework has thus been chosen to explain the EU’s function in the case of conflict minerals. This the

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47

Garrine, Cármen Maria Lucas Pedro. "Efeitos de dois níveis de sulfato de cobre e cobre metionina no metabolismo e oxidação de lipídios em ovinos." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-11022014-091249/.

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Abstract (sommario):

O cobre está associado ao metabolismo de lipídios, sendo bastante importante na redução do colesterol, e à estabilidade oxidativa da carne, por fazer parte de algumas enzimas antioxidantes. Atributos esses que tornam cada vez mais interessante a pesquisa do uso do mineral em várias espécies, com vista a melhorar a qualidade de vida dos consumidores, uma vez que se pode reduzir o risco de doenças cardiovasculares e câncer, assim como dos fornecedores de carne pelo possível aumento da vida de prateleira e das características organolépticas do produto. Desse modo, o objetivo deste estudo foi dete

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48

Correa, Lisia Bertonha. "Efeitos de diferentes fontes e níveis de cobre no desempenho, \"status\" de Cu, fermentação ruminal, metabolismo e oxidação de lipídios em bovinos." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-29092010-142724/.

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Abstract (sommario):

O cobre está associado ao metabolismo de lipídios, sendo bastante importante na redução do colesterol, e à estabilidade oxidativa da carne, por fazer parte de algumas enzimas antioxidantes. Porém, quando na forma iônica, é considerado um elemento pró-oxidante. O cobre orgânico não apresenta esse efeito e, além disso, geralmente apresenta maior biodisponibilidade que fontes inorgânicas. Desse modo, o objetivo deste estudo foi determinar o efeito da suplementação com dois níveis e duas fontes de cobre (inorgânica e orgânica) sobre o desempenho, concentração de cobre no fígado, músculo e sangue,

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49

Nascimento, Carolina Seno. "Biofortificação agronômica da rúcula com selênio em sistema hidropônico." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153604.

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Abstract (sommario):

Submitted by Carolina Seno Nascimento (carolina.seno@yahoo.com.br) on 2018-04-19T00:58:10Z No. of bitstreams: 1 Dissertação_Carolina_Seno_Nascimento.pdf: 928031 bytes, checksum: 6fefd80272ed55e13cf22f4f5276310c (MD5)<br>Approved for entry into archive by Alexandra Maria Donadon Lusser Segali null (alexmar@fcav.unesp.br) on 2018-04-19T11:38:02Z (GMT) No. of bitstreams: 1 nascimento_cs_me_jabo.pdf: 928031 bytes, checksum: 6fefd80272ed55e13cf22f4f5276310c (MD5)<br>Made available in DSpace on 2018-04-19T11:38:02Z (GMT). No. of bitstreams: 1 nascimento_cs_me_jabo.pdf: 928031 bytes, checksum: 6f

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50

Kaminskienė, Jurga. "Mineralinių medžiagų panaudojimas dėsliųjų vištų ir viščiukų broilerių mityboje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080317_134022-62942.

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Per pastaruosius 20 metų daug pasiekta auginant viščiukus broilerius – ženkliai padidėjo viščiukų augimo greitis ir maisto pasisavinimo efektyvumas. Šiuolaikiniai komerciniai hibridai greitai vystosi ir jiems reikia daug energijos turinčių lesalų, kurie leidžia maksimaliai išnaudoti jų genetines galimybes. Daugiau pasiekta ir vištų dedeklių lesinime balansuojant lesalus skirtingais dėslumo etapais, ypač ankstyvojo dėjimo periodu. Pastaruoju metu paukščių lesinime didelis dėmesys skiriamas optimaliam kalcio, fosforo, natrio, kalio ir chloro subalansavimui. Parinkus netinkamas kalcį ir fosforą n

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