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Dissertations / Theses on the topic 'Maternal nutrients'

Author: Grafiati

Published: 4 June 2021

Last updated: 21 February 2023

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1

Regnault, Timothy Robert Hume, of Western Sydney Hawkesbury University, Faculty of Agriculture and Horticulture, and School of Agriculture and Rural Development. "Orchestrated partitioning of maternal nutrients during ovine pregnancy." THESIS_FAH_ARD_Regnault_T.xml, 1997. http://handle.uws.edu.au:8081/1959.7/15.

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Ovine placental lactogen (oPL) is postulated to be involved in the repartitioning of maternal nutrients during pregnancy, through its effect on insulin metabolism. Ovine pancreatic insulin responses to exogenous glucose are depressed during pregnancy and this depression becomes more pronounced as gestation advances. In addition, under the hormonal environment of rising oPL and growth hormone (oGH) concentrations, maternal whole body glucose irreversible loss (GIL) increases. The percentage of GIL accounted for by uterine glucose uptake also increases with advancing gestation and increasing lit

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Regnault, Timothy Robert Hume. "Orchestrated partitioning of maternal nutrients during ovine pregnancy." Thesis, View thesis View thesis, 1997. http://handle.uws.edu.au:8081/1959.7/15.

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Ovine placental lactogen (oPL) is postulated to be involved in the repartitioning of maternal nutrients during pregnancy, through its effect on insulin metabolism. Ovine pancreatic insulin responses to exogenous glucose are depressed during pregnancy and this depression becomes more pronounced as gestation advances. In addition, under the hormonal environment of rising oPL and growth hormone (oGH) concentrations, maternal whole body glucose irreversible loss (GIL) increases. The percentage of GIL accounted for by uterine glucose uptake also increases with advancing gestation and increasing lit

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3

Regnault, Timothy Robert Hume. "Orchestrated partitioning of maternal nutrients during ovine pregnancy /." View thesis View thesis, 1997. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030513.111110/index.html.

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Thesis (Ph. D. of Philosophy)--University of Western Sydney, Hawkesbury, 1997.<br>"A thesis submitted to the School of Agriculture and Rural Development, Faculty of Agriculture and Horticulture, University of Western Sydney Hawkesbury, in part fulfilment of the requirements for the Degree of Doctor of Philosophy." Includes bibliographical references (p. 236-267).

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4

Angiolini, Emily Jayne. "Regulation of supply and demand for maternal nutrients by imprinted genes in mouse." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608459.

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5

Martinez, Maria Isabel Vega. "Desenvolvimento e produção de material de referência certificado de folhas de cana-de-açúcar para avaliação da qualidade nutricional." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-09102018-110451/.

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A cana-de-açúcar e produtos derivados são de grande relevância econômica para o Brasil e vários outros países. Inúmeras variedades de cana-de-açúcar são cultivadas e novas variedades têm sido desenvolvidas para buscar ganhos de produtividade. Nesse sentido, são indispensáveis materiais de referência certificados (CRMs) para o controle da qualidade de sistemas de medição e validação de métodos, objetivando o estudo do estado nutricional das diferentes variedades de cana-de-açúcar, de modo a otimizar os procedimentos de fertilização e incrementar a produção. Contudo, segundo a base de dados inte

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Kawamoto, Mayumi Silva. "Produção de Materiais de Referência Para Nutrientes e Contaminantes Inorgânicos em Amostras de Ração e Tecido de Peixe." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-14032019-102135/.

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Para que o crescimento da produção pesqueira no Brasil aconteça de maneira sustentável é necessário o desenvolvimento de bases científicas e tecnológicas sólidas, que solucionem as demandas existentes nos diversos elos da cadeia produtiva. Uma das principais evidências da qualidade dos produtos é fornecida pelos resultados analíticos, cuja confiabilidade e exatidão podem ser asseguradas pelo emprego de materiais de referência (RM). Neste contexto, foi desenvolvido material de referência de ração para peixe para macro e micronutrientes e parâmetros bromatológicos e está em fase final de desenvo

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7

Doyle, Wendy. "Maternal nutrition and low birthweight." Thesis, Brunel University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267895.

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8

Kato, Lilian Seiko. "Caracterização química de feijão para produção de material de referência certificado." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-26012015-151312/.

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Alimento base da dieta dos brasileiros, o feijão é a leguminosa de maior importância para consumo direto no mundo. Inúmeras pesquisas em relação às propriedades nutricionais do feijão comum e também do feijão de corda têm sido realizadas, no intuito de avaliar sua composição centesimal, mineral e fatores antinutricionais. Em relação à qualidade das determinações analíticas, sabe-se que os materiais de referência certificados (CRMs) estão se tornando cada vez mais necessários em procedimentos de medição. Contudo, ainda há escassez de CRMs para atender às demandas em todos os setores produtivos,

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9

Rhodes, Phillip Steven. "The interaction between maternal nutrient restriction and postnatal nutrient excess in an ovine model." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12092/.

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Evidence from human and animal studies has highlighted the sensitivity of the developing fetus to environmental insults, such as maternal undernutrition, during gestation. These nutritional perturbations to the intrauterine milieu may engender a legacy of deleterious health consequences in adulthood. This thesis presents a series of studies which test the `mis-match‘ fetal programming theory; that is, whether a nutritionally poor diet prenatally interacts with a nutritionally excessive diet postnatally to overtly increase risk factors for adult disease. The effect of a maternal global energy r

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10

Foster, Michelle Rebecca. "Placental nutrient transport in pregnancies complicated by maternal diabetes." Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251305.

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11

Wei, Julia Jia. "Maternal mood during pregnancy, methyl nutrient metabolism, and serotonin transporter." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/35857.

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Depression occurs in 15% of pregnant women and 1/3 are taking selective serotonin reuptake inhibitors (SSRIs) as antidepressants. The neurotransmitter, serotonin, plays a critical role in modulating stress responses and early brain development. Serotonin transporter (SLC6A4) regulates extracellular serotonin levels, and an insertion/deletion variant in the promoter (5HTTLPR) is associated with depression. Maternal mood and SSRIs may program newborns’ behaviour later in life. The underlying molecular mechanism for developmental programming may involve DNA methylation, which requires methyl nutr

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12

Gilbert, Jeffrey Stephen. "Cardiorenal adaptations of the ovine fetus and offspring to maternal nutrient restriction." Laramie, Wyo. : University of Wyoming, 2005. http://proquest.umi.com/pqdweb?did=1044392391&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Asopa, Sanjay. "Fetal cardiac development and cardiovascular response to maternal nutrient restriction during pregnancy." Thesis, University of Southampton, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.536311.

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Gopalakrishnan, Gosala. "Maternal nutrient restriction during pregnancy and programming of offspring blood pressure control." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423303.

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Brennan, Kathryn. "Maternal nutrient restriction alters renal development and blood pressure regulation of the offspring." Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439999.

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Mordhorst, Bethany Rae. "Influence of Maternal Nutrient Intake on Placental Vascular Function in Pregnant Beef Cows." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27383.

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Two experiments investigating impacts of maternal nutrition in beef cows were conducted; 1) to test the impact of duration of global nutrient restriction and subsequent realimentation throughout gestation on placentome capillary development; and 2) to test the response of protein supplementation on blood flow to the uterus and mammary gland in late gestation. In experiment one, realimentation following varying periods of nutrient restriction had minor alterations in angiogenic factor mRNA expression of as well as vascularity in the placentome. In experiment two, mammary gland blood flow was no

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Reyaz, Arshi. "Influence of Maternal Nutrient Intake on Placental Vascular Function in Pregnant Beef Cows." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/26993.

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We hypothesized that global maternal nutrient restriction during early and mid-gestation followed by realimentation in pregnant beef cows would alter placental arterial vascular function. We tested changes in placental caruncular (CAR) and cotyledonary (COT) arterial sensitivity to bradykinin (BK), a potent vasodilator. Cows were randomly assigned to be nutrient restricted for 55 or 110 during early to mid pregnancy. On d 85, 140, and 254 cows were euthanized and CAR and COT arteries were isolated. Maternal nutrient restriction during early and mid-gestation allowed for placental compensation

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18

Esposito, Nicole C. "Soil Nutrient Availability Properties of Biochar." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1096.

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Biochar’s high porosity and negative surface charge allows for numerous soil and plant benefits such as increased water retention, high nutrient availability, and plant growth. By analysing biochar’s effect of all of these factors, a system can be put in place in which soils can be remediated with the proper soil amendments. This report discusses and tests the effects of varying rates of biochar on pH levels, cation exchange capacity, and nutrient exchangeability (of calcium, magnesium, sodium, and potassium) in soil. Corn plants were also grown in soils of varying amendment types and analysed

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Brett, Kendra Elizabeth. "Maternal Phenotype, Directly Measured Physical Activity and Associations with Placenta Nutrient Transport Related Gene Expression." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32514.

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The intrauterine environment plays an important role in fetal development and downstream health. Given the rise in maternal obesity and the incidence of babies being born large-for-gestational-age, research is needed exploring the mechanisms through which maternal obesity and health behaviours affect the delivery of nutrients to the fetus. This thesis includes three manuscripts in the pursuit of two objectives: 1) To determine whether there are changes in placenta nutrient transport-related gene expression in response to obesity, excess gestational weight gain, and variations physical activity

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Cowley, Michael Anthony. "Investigating the role of the imprinted Grb10 gene in the regulation of maternal nutrient transfer." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518301.

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Imprinted genes are a subset of loci, positioned on autosomes and the X-chromosome, which are expressed monoallelically in a parent-of-origin specific manner. The influence of such genes on the regulation of embryonic growth and postnatal energy homeostasis is well established. The parental conflict hypothesis predicts that, in utero, paternally-expressed genes will promote maternal resource acquisition and thus growth, whereas maternally-expressed genes will oppose this action, restricting resource investment in a single brood in the interests of the lifetime reproductive success of the mothe

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21

Bossu, Carla Maíra. "Produção e caracterização de material de referência de forrageira para nutrientes e contaminantes inorgânicos." Universidade Federal de São Carlos, 2013. https://repositorio.ufscar.br/handle/ufscar/6280.

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Verhalen, Tatiane Rosane. "Preparo e caracterização de material de referência de solo para nutrientes e contaminantes inorgânicos." Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/6600.

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Made available in DSpace on 2016-06-02T20:36:53Z (GMT). No. of bitstreams: 1 6310.pdf: 1827814 bytes, checksum: b94dcad55360a35c44e4718db7d6fcac (MD5) Previous issue date: 2014-09-26<br>Financiadora de Estudos e Projetos<br>The certified reference materials make an important role in the establishment of traceability in analytical chemistry, ensuring reliability and accuracy to the measurements and are fundamental for the validation of analytical methods. The demand for new certified reference materials increases in all areas of knowledge, with emphases to the agriculture. Basis for the produ

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23

Gedi, Mohamed Abdulkadir. "Nutrient composition and digestibility of chloroplast rich fractions from green leaf materials." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/43285/.

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Green leaf material is recognized as a good source of many valuable nutrients including vitamins, fatty acids and minerals. Chloroplast-rich-fractions (CRFs) were prepared from green plant species and their nutrient composition compared with the whole leaf materials (WLMs). Digestibility of CRFs from spinach was also compared with the WLM using simulated in vitro oral, stomach and small intestinal conditions. The impact of pancreatic lipase-related protein 2 from guinea pig (gPLRP2) on the hydrolysis of galactolipids compared to neutral lipid, Tributyrin was subsequently determined in vitro. P

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Jakrawatana, Napat Civil &amp Environmental Engineering Faculty of Engineering UNSW. "An integrated decision support tool for more sustainable management of biomass resources in agricultural regions." Awarded By:University of New South Wales. Civil & Environmental Engineering, 2009. http://handle.unsw.edu.au/1959.4/44547.

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Agriculture currently faces a number of environmental sustainability issues. Three key issues that are the focus of this study are greenhouse gas emissions, depletion of mineral phosphorus resources and cadmium contamination in agricultural soil. Biomass can potentially be used as a renewable energy source and can also be returned to improve the nutrient and drainage structure of agricultural soils. Sustainable management of biomass and agriculture can have significant impacts on reducing greenhouse gas emissions from a region. Moreover, it reduces the demand for external energy supply, phosph

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25

Adams, Zachry Clay Adams James F. "Comparison of broiler litter, broiler litter ash with reagent grade materials as sources of plant nutrients." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/ADAMS_ZACHRY_50.pdf.

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26

Rosa, Rodrigo Amighini 1985. "Fluxos de nutrientes e material particulado na bacia de drenagem do complexo estuarino de Paranaguá - PR." reponame:Repositório Institucional da UFPR, 2011. http://hdl.handle.net/1884/25107.

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Resumo: As fontes alóctones de materiais para os ecossistemas costeiros têm as bacias fluviais como principais vias de acesso. A bacia hidrográfica litorânea do Paraná apresenta um elevado potencial erosivo, decorrente da alta instabilidade natural e pela ação antrópica em algumas regiões. O Complexo Estuarino de Paranaguá (CEP) apresenta dois eixos principais: L–O, que corresponde à Baía de Paranaguá e N–S, que contempla a Baía das Laranjeiras. Na primeira, foram investigados os rios Cachoeira, Cacatú, Faisqueira, Nhundiaquara, Guaraguaçú e Sagrado, e na segunda, os rios Guaraqueçaba, Serra N

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De, La Torre Mary McCarter. "Maternal anthropometric measures and nutrient intake during the second trimester of pregnancy of normal weight and overweight gravidas." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45644.

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Height, skinfold, and circumference measurements were obtained from 29 normal weight and 17 overweight (>110% of desirable weight for height) healthy pregnant women every four weeks during their second trimester of pregnancy. The mean weight gain and food intake values were not significantly different for both groups. Measurements increased at a greater rate for the normal weight gravidas than for the overweight gravidas in almost every case. For both groups, increases in fat stores were greater in the central sites than in the peripheral sites. No clear relationship between age, prepr

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Khosa, Mbokota Candy. "An investigation into the potential of crude and partially separated material of selected non-crop plant species as control agents of root-knot nematodes (Meloidogyne incognita) in tomato / Mbokota Candy Khosa." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8705.

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Plant-parasitic nematodes (PPN) are a serious problem in vegetable production and can cause severe damage to several crops. In rural, low-input farming nematode damage is much higher and yields can be completely destroyed. Some Commercial nematicides have been withdrawn from the market due to health and environment concerns. These need to be replaced by alternative nematode control strategies of which soil amendments is one alternative. Nine non-crop plant species used in various forms in traditional healing, viz. Cassia abbreviata, Cissus cactiformis, Euphorbia ingens, Ipomoea kituiensis, Mae

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Oliveira, Marielle Ferreira de. "Tratamento de esgotos sanitários em sistema combinado anaeróbio/aeróbio utilizando lodo como fonte endógena de carbono." Universidade Estadual da Paraíba, 2012. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/1720.

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Nikiema, Sompassaté Josiane. "Attenuation of greenhouse gas emissions by means of methane biofiltration optimization of the operating parameters." Thèse, Université de Sherbrooke, 2008. http://savoirs.usherbrooke.ca/handle/11143/1911.

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The main goal of this work has been that of optimizing the operating conditions of a biofilter, intended for the control of methane, an important greenhouse gas widely emitted by older or smaller landfill installations.The specific objectives were: (1) to select a suitable packing material (of organic or inorganic type); (2) to optimize the concentrations of input nutrients, mainly consisting of nitrogen, phosphorus, potassium and copper, which are intended to be introduced via the nutrient solution; (3) to determine the optimized values of the most important design parameters, such as the met

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Deenik, Jonathan Leonard. "Correcting soil nutrient deficiencies with organic materials in the atoll soils of the Marshall Islands." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/597.

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The coralline soils of atolls suffer from multiple nutrient deficiencies that severely limit crop growth. This study was conducted to assess the nutrient status of the soils of the inhabited atolls within the Marshall Islands (MI), and to determine what local materials could be used to correct deficiencies limiting crop growth. Surface and subsoils from 25 atolls were collected and analyzed for their chemical properties, and soil test results were evaluated with a missing element pot study. Soil tests revealed that the MI soils were severely deficient in K (0.12 cmol c kg -1 ) and marginally

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Lingas, Rania I. "The impact of acute maternal nutrient restriction on the development and long-term function of the hypthalamo-pituitary-adrenal axis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0018/MQ54185.pdf.

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Downing, Diane Elaine. "Maternal anthropometric measures and nutrient intake during the second and third trimesters of pregnancy of normal weight and overweight gravidas." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/101271.

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Weight, height, skinfold thicknesses, circumference measurements, and 72-hour food records were collected from pregnant women (N=51) at four-week intervals between the 12th and 40th weeks of gestation. Subjects were divided Into two groups according to percent standard prepregnant weight for height: overweight > 110% (N=17) and normal weight < 110% (N=28). Changes In weight, skinfold thicknesses and circumference measurements were similar between the two groups during the third trimester (weeks 28 to 40 of gestation). Significant increases in weight (1.58 kg per four weeks) and waist circumfer

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Hijo, Carlos Alberto Grossi. "Quantificação do efeito do açude castanhão sobre o fluxo de material particulado em suspensão e nutrientes para o estuário do rio jaguaribe, Ceará - Brasil." reponame:Repositório Institucional da UFC, 2009. http://www.repositorio.ufc.br/handle/riufc/11428.

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HIJO, C. A. G. Quantificação do efeito do açude castanhão sobre o fluxo de material particulado em suspensão e nutrientes para o estuário do rio jaguaribe, Ceará - Brasil. 2009. 39 f. Dissertação (mestrado em Ciências Marinhas Tropicais) - Instituto de Ciências do Mar, Universidade Federal do Ceará, Fortaleza, 2009.<br>Submitted by Nadsa Cid (nadsa@ufc.br) on 2015-04-16T16:17:14Z No. of bitstreams: 1 2009_dis_caghijo.pdf: 694999 bytes, checksum: 84e1329fd2c068e09d6a1b7e93a51138 (MD5)<br>Approved for entry into archive by Nadsa Cid(nadsa@ufc.br) on 2015-04-16T16:17:26Z (GMT) No. of bitstreams:

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Kassa, Meheret. "Phosphorous Desorbing Capacity of the Filter Materials Polonite® and Sorbulite®." Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171844.

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Replacing the lost Phosphates from different ecosystems is not a question it’s an onus. This none replaceable and renewable resource is one of the vital nutrients where without it, cells, crops and human beings cannot function and live. Though available in environment, its natural cycle is disturbed as its need especially in agriculture sector increases significantly. Phosphorus recovery from waste water sorbents is one of the innovative and promising concepts. The core goal of this paper is to evaluate the phosphorus desorbing capacity of two reactive materials (waste water sorbents) using ch

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Kremmyda, Lefkothea-Stella. "Salmon in Pregnancy Study (SIPS) : the effects of increased oily fish consumption on maternal nutrient intake, fatty acid status and immunity." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/196579/.

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The prevalence of childhood atopic diseases (eczema, asthma, allergies, hay-fever) has increased during the last 30 years. Epidemiological studies link higher fish intake during pregnancy with lower risk of atopy in the offspring. Oily fish provide the long chain (LC) n-3 polyunsaturated fatty acids (PUFA) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), as well as vitamin D and antioxidants (selenium). Fish oil provides EPA and DHA and fish oil supplementation during pregnancy alters offspring immunity in a way that would be consistent with lowered risk of atopy. There are no studi

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Zhang, Yan. "Comparison of Functional Porous Organic Polymers (POPs) and Natural Material Zeolite for Nitrogen Removal and Recovery from Synthetic Urine." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7657.

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Urine comprises around 1% of domestic sewage volume but holds 80% of total nitrogen. Source separation is a sustainable way to wastewater management than traditional way due to low energy cost and preventing certain pollutants into wastewater treatment plants. Currently, removing and recovering nitrogen from source-separated urine has attracted more and more interests. Of them, ion exchange was used for removal and recovery of nitrogen in the form of ammonia from synthetic urine for potential application as a fertilizer in agriculture. No previous research studies were conducted to investigate

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Silva, Juliana Brito da. "Micronutrientes em perfis de solos do Escudo Sul-riograndense." Universidade Federal de Pelotas, 2009. http://repositorio.ufpel.edu.br/handle/ri/1178.

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Made available in DSpace on 2014-08-20T13:25:42Z (GMT). No. of bitstreams: 1 Dissertacao_Juliana_ Brito_da_Silva.pdf: 17044768 bytes, checksum: 1320d3e5fc898021a6254c663f4ed2f3 (MD5) Previous issue date: 2009-03-31<br>The highlands from the southern region of State of Rio Grande do Sul have been traditionally used for extensive cattle raising, which practically does not demand soil analysis and fertilization. The sustainable use of the soils with other agricultural activities, such as forestry, that has been increased in the last few years, needs a more suitable and accurate knowledge

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Silva, Caroline Santos da. "Produção e avaliação de materiais de referência para nutrientes e contaminantes inorgânicos em amostras agronômicas." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/7860.

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Clark, W. Andrew, Norman Assad, Tasha H. Ferrell, and Nicole S. Litwin. "Nutrient Intake, Oxidative Stress and Fatty Acid Profiles of Women with and Without Fertility Issues." Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etsu-works/2517.

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Faria, Obede Borges. "Utilização de macrófitas aquáticas na produção de adobe: um estudo de caso no reservatório de Salto Grande (Americana - SP)." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-10022003-103821/.

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Este trabalho busca otimizar a utilização de biomassa de macrófitas aquáticas na produção de adobe (tijolos de terra crua, secos ao sol), baseado na determinação e estudo de suas características físicas e mecânicas, assim como nas características físicas e químicas destas plantas. A pesquisa foi desenvolvida no reservatório de Salto Grande, no município de Americana - SP. Este lago está localizado em uma área com déficit de habitações de interesse social, apresentando altos índices de urbanização e industrialização, o que acarreta no seu avançado processo de eutrofização artificial, decorrente

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Karunarathna, Mudugamuwe Hewawasam Jayan Savinda. "Photochemistry of iron(III) with carboxylate-containing polysaccharides for sustainable materials." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1586468303760847.

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Sanpera, Calbet Isis. "Global changes in headwater streams: effects of hydrological and nutrient fluctuations on the quality of basal resources = Canvis globals en rius de capçalera: efectes de les fluctuacions hidrològiques i dels nutrients en la qualitat dels recursos basals." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/145433.

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Streams are complex and highly diverse ecosystems. Within the stream network, headwater streams (1st to 3rd order) are highly important. Headwaters represent most of the total length, influence the structure and functioning of higher order streams, generate most of the water flow and support higher rates of biogeochemical processing, with a higher rate of nutrient removal. Moreover, they offer high habitat diversity, both within and among streams. From all the drainage basin, it is the riparian zone which has the greatest influence in the structure and functioning of these streams. The in-fall

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Franzé, Rodrigo Vezzani. "Qualidade tecnológica e teores de nutrientes da cana-de-açúcar sob efeito de maturadores /." Jaboticabal : [s.n.], 2010. http://hdl.handle.net/11449/96958.

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Resumo: O presente trabalho teve por objetivo avaliar o uso de diferentes produtos químicos como maturadores, em diferentes doses e misturas na qualidade tecnológica e também quantificar os teores de nutrientes nas lâminas foliares e no caldo da cana-planta cv. SP83-2847. O experimento foi conduzido na Fazenda São Francisco do Itaquerê, da Usina Santa Fé, Nova Europa, SP, Brasil de maio a julho de 2008. O delineamento experimental foi em blocos casualizados com parcelas subdivididas e quatro repetições. Os 14 tratamentos principais foram testemunha; glifosato; Moddus; Curavial; fosfito de potá

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Renman, Agnieszka. "On-site wastewater treatment : Polonite and other filter materials for removal of metals, nitrogen and phosphorus." Doctoral thesis, KTH, Mark- och vattenteknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4811.

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Bed filters using reactive materials are an emerging technology for on-site wastewater treatment. Chemical reactions transfer contaminants from the aqueous to the solid phase. Phosphorus is removed from domestic wastewater by sorption to filter materials, which can then be recycled to agriculture as fertilisers and soil amendments. This thesis presents long-term column and field-scale studies of nine filter materials, particularly the novel product Polonite®. Phosphorus, nitro-gen and metals were removed by the mineral-based materials to varying degrees. Polonite and Nordkalk Filtra P demonstr

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Ciuk, Karlsson Susanna. "Modeling of bark-, sand- and activated carbon filters for treatment of greywater." Thesis, Energi och Teknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-187078.

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ABSTRACT Modeling of bark-, sand- and activated carbon filters for treatment of greywater Susanna Ciuk Karlsson The part of the waste water produced in a household, originating from showers, dish - and wash water, is called greywater. It is possible to treat the greywater separately from the black water (toilet water) as it is less polluted and then use it for purposes such as garden irrigation. There are various methods for purifying greywater. Here, the possibility to purify greywater using three column filters with different materials (activated carbon, pine bark and sand) was examined th

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Swart, Etheresia, and Maryna Lehmann-Maritz. "Evaluation of near infrared reflectance (NIR) spectroscopy to determine the nutrient composition of raw materials and compound ostrich feeds." Thesis, Nelson Mandela University, 2017. http://hdl.handle.net/10948/13779.

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The chemical analysis of feed samples can be time consuming and expensive. The use of near infrared reflectance (NIR) spectroscopy was evaluated in a range of studies as a rapid technique to predict the chemical constituents in feedstuffs and compound ostrich feeds. The prediction of accurate results by NIR spectroscopy relies heavily upon obtaining a calibration set which represents the variation in the main population, accurate laboratory analyses and the application of the best mathematical procedures. This research project was designed to meet five objectives: The first objective was to de

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Morris, Rebecca Kate. "A quantitative investigation of the crop yield response and nutrient value of treated biosolid materials used in agricultural production." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.429601.

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Franzé, Rodrigo Vezzani [UNESP]. "Qualidade tecnológica e teores de nutrientes da cana-de-açúcar sob efeito de maturadores." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/96958.

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Made available in DSpace on 2014-06-11T19:28:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-07-23Bitstream added on 2014-06-13T18:57:49Z : No. of bitstreams: 1 franze_rv_me_jabo.pdf: 1078770 bytes, checksum: b9f6e8252d0d7eae11c88593967dfec8 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Usina São Martinho<br>O presente trabalho teve por objetivo avaliar o uso de diferentes produtos químicos como maturadores, em diferentes doses e misturas na qualidade tecnológica e também quantificar os teores de nutrientes nas lâminas foliares e no caldo da cana-p

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Borgestedt, Helena, and Ingela Svanäng. "Towards Sustainable Phosphorus Management : Material Flow Analysis of phosphorus in Gothenburg and ways to establish nutrient recycling by improving urban wastewater systems." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-159721.

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All life forms require the nutrient phosphorus and it cannot be substituted by any other element. The global cycle of phosphorus is special among the major biogeochemical cycles, since it has no significant gaseous compounds and only closes every 10-100 million years. However, human activities, as application of mineral fertilizers, conversion of natural ecosystems to arable land and releases of untreated waste, intensify remarkably thephosphorus flows. The problems with linear flows of a limited resource leading to eutrophication of aquaticenvironments, for instance, have generated national e

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