Дисертації з теми "Mineral replacement"
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Dey, Vishal. "Renal replacement therapy and bone mineral metabolism." Thesis, University of Glasgow, 2019. http://theses.gla.ac.uk/40995/.
Повний текст джерелаDarwish, Abdulhanan A. "Development of high performance concrete using combinations of mineral admixtures." Thesis, University of Sheffield, 1995. http://etheses.whiterose.ac.uk/3066/.
Повний текст джерелаKartal, Muhammet. "Experimental studies on the generation and evolution of mineral porosity during fluid-mediated mineral replacement reactions." Thesis, Kartal, Muhammet (2022) Experimental studies on the generation and evolution of mineral porosity during fluid-mediated mineral replacement reactions. PhD thesis, Murdoch University, 2022. https://researchrepository.murdoch.edu.au/id/eprint/64870/.
Повний текст джерелаMañón, Alfredo. "INTERACTION OF DIETARY SUPPLEMENTS OF ORGANIC TRACE MINERALS AND PHYTASE ON GROWTH PERFORMANCE AND MINERAL METABOLISM OF REPLACEMENT PULLETS." UKnowledge, 2015. http://uknowledge.uky.edu/animalsci_etds/58.
Повний текст джерелаAdegoke, Idowu Abiodun. "Experimental studies on hydrothermal mineral replacement of bornite by copper sulphides." Thesis, Adegoke, Idowu Abiodun (2021) Experimental studies on hydrothermal mineral replacement of bornite by copper sulphides. PhD thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/60897/.
Повний текст джерелаKnorsch, Manuel. "The mechanisms and implications of hydrothermal mineral replacement reactions in carbonate-hosted ore deposits." Thesis, Knorsch, Manuel (2021) The mechanisms and implications of hydrothermal mineral replacement reactions in carbonate-hosted ore deposits. PhD thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/64693/.
Повний текст джерелаCohen, Gavin. "Equipment replacement decision making in the mining industry." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52260.
Повний текст джерелаSome digitised pages may appear illegible due to the condition of the original hard copy
ENGLISH ABSTRACT: The decision to make equipment replacements has a major influence on the competitiveness of any business. A company like Iscor recently spent approximately one billion Rand to modernise its fleet of equipment at various centres. This report presents a holistic approach to the issue of equipment replacement decision-making. It contends that equipment replacement decisions are not isolated incidents that occur by chance. In fact, the whole process is an integral part of the various processes in the business. This ranges from the influence on the strategy, through to issues such as production planning, maintenance, staffing, financial planning and so on. The role of the replacement decision in each of these elements are discussed and elaborated on. The report goes on to review the various models available in the industry and discusses their advantages and disadvantages. Thus ensuring a clear understanding of the differences in the approaches. The report attempted to propose a method that is relatively straight forward and in terms of application lends itself to the practical mining man. The proposed models are then used to complete a relatively simple example. The example was primarily aimed at showing the elements of the application and certainly not the full extent of the model.
AFRIKAANSE OPSOMMING: Die uitvoer van toerusting vervanging_sbesluite kan 'n dramatiese invloed op die mededingendheid van enige besigheid hê. 'n Maatskappy soos Iscor het onlangs 'n bedrag van ongeveer een biljoen Rand gespandeer om hul vloot van toerusting op verskeie sentrums te vervang. Die verslag stel 'n alles omvattende benadering tot die kwessie van toerusting vervangingsbesluitneming voor. Die verslag gaan voort om voor te stel dat die vervangingsbesluit nie iets is wat toevallig geneem moet word nie. Inteendeel dit is 'n integrale deel van al die verskeidenheid besigheidsprosesse. Die verslag bespreek die verskeidenheid modelle beskikbaar en brei uit oor die voor - en- nadele van elk. Die bespreking verseker dat die leser 'n duidelike beeld kry oor die toepaslikheid van die verskeie modelle. Dit gaan voort om 'n praktiese model voor te stel wat redelik maklik is om aan te wend. Die model word dan toegepas op 'n eenvoudige voorbeeld.
Pollok, Kilian. "Crystal growth patterns in solid solution systems case studies on oscillatory zoning and mineral replacement reactions /." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=983051828.
Повний текст джерелаFu, Tingting. "Use of Exploratory Data-Mining Techniques to Analyze Associations between Bone-Mineral Density and Relevant Clinical Parameters of Gaucher Disease." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1344791797.
Повний текст джерелаMenichetti, Andrea. "In silico methods to evaluate Fracture Risk and Bone Mineral Density changes in patients undergoing Total Hip Replacement." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11058/.
Повний текст джерелаMilliken, Laura Ann 1970. "Bone mineral density, bone remodeling, insulin-like growth factors, hormone replacement therapy, and exercise training in postmenopausal women." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282746.
Повний текст джерелаGreiner, Martina [Verfasser], and Wolfgang [Akademischer Betreuer] Schmahl. "Crystal growth and mineral replacement reactions in biomimetic and biological calciumcarbonate and calciumphosphate composites / Martina Greiner ; Betreuer: Wolfgang Schmahl." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1211957454/34.
Повний текст джерелаBetkowski, Wladyslaw Benedykt. "A STUDY OF PHOSPHATE ACCESSORY MINERALS, THEIR REACTIVITIES, REPLACEMENTS AND GEOCHRONOLOGY: IMPLICATIONS FOR THE LLALLAGUA TIN PORPHYRY EMPLACEMENT AND MINERALIZATION." Miami University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami1532539010237075.
Повний текст джерелаAllan, Shawn Michael. "Reactive replacement and addition of cations in bioclastic silica and calcite." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/19239.
Повний текст джерелаCommittee Chair: Kenneth Sandhage; Committee Members: Joe Cochran, Robert Snyder and Tom Sanders. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Unfer, Taís Cristina. "INFLUÊNCIA DA TERAPIA DE REPOSIÇÃO HORMONAL SOBRE A ATIVIDADE DE ENZIMAS ANTIOXIDANTES, NÍVEIS DE ESTRÔNCIO E FERRO, E METABOLISMO ÓSSEO EM MULHERES." Universidade Federal de Santa Maria, 2006. http://repositorio.ufsm.br/handle/1/11156.
Повний текст джерелаNatural loss of estrogen occurring in menopausal process may contribute to various health problems many of them possibly related to oxidative stress. Decrease in circulating estrogen levels and increase in follicle stimulating hormone levels (FSH) in menopausal status are related with decrease in bone mineral density. Hormone replacement therapy (HRT) is the most common treatment to attenuate menopausal disturbances and strontium (Sr) and iron (Fe) have been suggested to influence to bone metabolism. The objectives of this study was to evaluate the influence of HRT on the activity of antioxidant enzymes (SOD, CAT, and GPx) and lipid peroxidation (TBARS) in menopausal women and to determine blood strontium and iron levels and their relationship with bone mineral density and biochemical parameters in pre and postmenopausal women with or without HRT. Blood antioxidant enzyme activities were determined in premenopausal (n=18) and in postmenopausal healthy women without (n=21) or with HRT (n=19) (mean ages: 47, 59, and 57, respectively). Whole blood Sr and Fe levels were determined by spectrometric methods (inductively coupled plasma mass spectrometry - ICP-MS and inductively coupled plasma optical emission spectrometry - ICP-OES, respectively) in premenopausal (n=17) and postmenopausal women without (n=20) or with HRT (n=19) (mean ages: 47, 60 and 57 years, respectively). Bone mineral density (BMD) was evaluated at the lumbar spine (BMD L1-L4) and femoral neck (BMD femur) by dual energy X-ray absorptiometry (DEXA). TBARS, CAT, and GPx activity were not significantly different among the groups of study. However, SOD activity was significantly lower in postmenopausal women without HRT (0.68±0.04 U/mg Hb) when compared both to premenopausal women (0.91±0.04 U/mg Hb) and to postmenopausal women with HRT (0.89±0.07 U/mg Hb). SOD activity was positively correlated to the duration of HRT in the postmenopausal groups (r=0.33, p<0.05). Blood Sr and Fe levels in premenopausal (33.66±3.57 µg L-1 and 502.09±19.90 mg L-1, respectively) and postmenopausal women without (31.47±2.58 µg L-1 and 523.65±9.91 mg L-1, respectively) or with HRT (29.74±3.02 µg L-1 and 540.30±20.24 mg L-1, respectively) were not significantly different among study groups. BMD L1-L4 and BMD femur were significantly higher in premenopausal women (1.05±0.23 and 0.84±0.02 g/cm2, respectively) when compared both to postmenopausal women without (0.90±0.37 and 0.75±0.02 g/cm2, respectively) and to postmenopausal women with HRT (0.94±0.04 and 0.74±0.02 g/cm2, respectively). However, BMD had no relationship with blood metal levels, but was negatively influenced by FSH levels (β=-0.47, p<0.01 for BMD L1-L4 and β=-0.42, p<0.01 for BMD femur) and age (r=-0.48, p<0.01 for BMD L1-L4 and r=-0.38, p<0.01 for BMD femur). We concluded that HRT antagonizes the decrease of SOD activity that occurs after menopause, suggesting that HRT may play a beneficial role in the protection against oxidative stress. It was also shown that the physiologic whole blood Sr and Fe levels had no significant effect in BMD or other biochemical parameters in pre and postmenopausal women. BMD decreased with the increased in FSH levels and with aging.
A redução natural nos níveis de estrogênio, que ocorre na menopausa pode contribuir para vários problemas de saúde muitos deles também possivelmente relacionados ao estresse oxidativo. A diminuição dos níveis circulantes de estrogênio e o aumento de hormônio folículo estimulante (FSH) em mulheres na menopausa estão sendo associados à perda óssea. A terapia de reposição hormonal (TRH) é o tratamento mais comum para atenuar os distúrbios menopáusicos e, as concentrações sanguíneas de estrôncio (Sr) e ferro (Fe) têm mostrado influenciar no metabolismo ósseo. Os objetivos deste estudo foram avaliar a influência da TRH na atividade de enzimas antioxidantes (SOD, CAT e GPx) e lipoperoxidação (TBARS); e determinar os níveis de Sr e Fe e sua relação com a densidade mineral óssea (DMO) e parâmetros bioquímicos em mulheres na pré e pós menopausa com e sem TRH. As atividades das enzimas antioxidantes foram determinadas no sangue total de mulheres na pré-menopausa (n= 18) e na pós-menopausa sem (n= 21) e com TRH (n= 19); a idade média dos grupos foi de 47, 59 e 57 anos, respectivamente. As concentrações de Sr e Fe foram avaliadas por espectrofotometria (espectrometria de massas com plasma acoplado indutivamente - ICP-MS e espectrometria de emissão óptica com plasma acoplado indutivamente - ICP-OES, respectivamente), no sangue de mulheres na pré-menopausa (n= 17) e na pós-menopausa sem (n= 20) e com TRH (n= 19), com idade média de 47, 60 e 57 anos, respectivamente. A DMO foi determinada na lombar (L1-L4) e no colo do fêmur por absorciometria de duplo feixe de raios-X (DEXA). Em nosso estudo TBARS, CAT e GPx não foram significativamente diferentes entre os grupos. No entanto, a atividade da SOD foi significativamente menor em mulheres na pós-menopausa sem TRH (0,68±0,04 U/mg Hb) quando comparado com os grupos pós-menopausa com TRH (0,89±0,07 U/mg Hb) e na pré-menopausa (0,91±0,04 U/mg Hb). A atividade da SOD também apresentou correlação positiva com o tempo de TRH (r=0,33; p<0,05) nas mulheres menopausadas. As concentrações de Sr e Fe não diferiram entre as mulheres não menopausadas (33,66±3,57 µg L-1 e 502,09±19,90 mg L-1, respectivamente) e aquelas na pós-menopausa sem (31,47±2,58 µg L-1 e 523,65±9,91 mg L-1, respectivamente) ou com TRH (29,74±3,02 µg L-1 e 540,30±20,24 mg L-1, respectivamente). A DMO da L1-L4 e fêmur foi maior nas mulheres que não estavam na menopausa (1,05±0,23 e 0,84±0,02 g/cm2, respectivamente) quando comparado com os grupos de mulheres na pós-menopausa sem (0,90±0,37 e 0,75±0,02 g/cm2, respectivamente) e com TRH (0,94±0,04 e 0,74±0,02 g/cm2, respectivamente). No entanto, a DMO não apresentou correlação com as concentrações de metais encontradas. A DMO foi negativamente influenciada pelos níveis de FSH (β=-0,47, p<0,01 para DMO L1-L4 e β=-0,42, p<0,01 para DMO fêmur), e pela idade (r=-0,48, p<0,01 para DMO L1-L4 e r=-0,38, p<0,01 para DMO fêmur). Concluiu-se que a TRH antagoniza a diminuição da atividade antioxidante da SOD que ocorre após a menopausa, sugerindo o papel protetor da terapia contra o estresse oxidativo. Também demonstramos que as concentrações sanguíneas de Sr e Fe encontradas não exerceram efeito significativo na DMO e outros parâmetros bioquímicos e não foram influenciadas pela menopausa ou pela TRH em mulheres na pré e pós-menopausa. A diminuição na DMO observada foi em decorrência do aumento nos níveis circulantes de FSH e do processo de envelhecimento.
Ljunggren, Ribom Eva. "Muscles, Estrogen, and Bone." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3779.
Повний текст джерелаGillberg, Peter. "Bone Metabolism in Men." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5165-9/.
Повний текст джерелаPitocchi, Jonathan. "Quantitative assessment of bone quality after total hip replacement through medical images: 2D and 3D approaches." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13023/.
Повний текст джерелаLeblondel, Gérard. "Influences hormonales sur la distribution de 14 éléments chez le rat : contribution à l'étude de l'homéostasie des éléments." Angers, 1988. http://www.theses.fr/1988ANGE0001.
Повний текст джерелаPollok, Kilian [Verfasser]. "Crystal growth patterns in solid solution systems : case studies on oscillatory zoning and mineral replacement reactions / vorgelegt von Kilian Pollok." 2004. http://d-nb.info/983051828/34.
Повний текст джерелаLi, Kan. "Scavenging of uranium in experimental and natural samples." Thesis, 2016. http://hdl.handle.net/2440/106292.
Повний текст джерелаThesis (Ph.D.) (Research by Publication) -- University of Adelaide,School of Chemical Engineering, 2016.
Hurry, Jennifer. "Radiographic Bone Quality Markers and Implant Migration: The Search for Patient-Specific Models of Knee Arthroplasty Longevity." Thesis, 2012. http://hdl.handle.net/10222/15361.
Повний текст джерелаGrant, David William. "Reduced Burst Release of Bioactive rhBMP-2 from a Three-phase Composite Scaffold." Thesis, 2010. http://hdl.handle.net/1807/25605.
Повний текст джерела