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Regnault, Timothy Robert Hume, of Western Sydney Hawkesbury University, Faculty of Agriculture and Horticulture i 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.
Pełny tekst źródłaDoctor of Philosophy (PhD)
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.
Pełny tekst źródłaRegnault, 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.
Pełny tekst źródła"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).
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.
Pełny tekst źródłaMartinez, 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/.
Pełny tekst źródłaThe sugarcane and derived products are of great economic importance for Brazil and several other countries. Many varieties of sugar cane are grown and new varieties have been developed to seek productivity gains. In this sense, certified reference materials (CRMs) are necessary for the quality control of measurement systems and validation of methods, aiming at the study of the nutritional status of the different sugarcane varieties for optimizing fertilization and increasing production. However, according to the international database of certified reference materials (COMAR) there is not a suitable CRM for the assessment of nutritional status of sugarcane. Thus, this work investigates the possibility of producing a reference material from leaves of sugarcane to fulfill such a demand. The work was divided into two main steps: 1) study of sugarcane varieties regarding elemental composition and 2) development of the reference material. Twelve varieties of sugarcane grown in the State of São Paulo were covered in the study: CTC2, CTC4, CTC11, CTC14, CTC15, CTC17, CTC20, IACSP955000, RB855156, RB965902, RB966928 and SP832847. The analytical techniques used for the assessment of composition were neutron activation analysis (NAA) and optical emission spectrometry with inductively coupled plasma (ICP OES), in addition to the Kjeldahl method for determination of N. In general, the results showed macronutrients in adequate levels, while, among the micronutrients, Cu and Zn were found in the critical limit for almost all the varieties studied. The selection of the variety RB966928 for producing the candidate reference material was based on the nutritional characteristics for high productivity, on the lower coefficients of variation of sampling in the field (RSD < 30%) and on the agronomic characteristics. The candidate material was produced from 90 kg of leaves, using only 15 cm from the central part without the main rib. After various tests for determining the best preparation procedure, the leaves were lyophilized, milled and homogenized, obtaining 410 bottles of the candidate material containing 20 g each. The physical characterization found residual moisture of 3.8 % and particle size < 115 µm. Homogeneity tests within and between bottles were performed using NAA and Kjeldahl method. The results confirmed the within bottle homogeneity of the material for all eighteen elements, using masses from 180 mg to 200 mg, while the homogeneity between bottles was confirmed for twenty elements. Stability studies in the short and the long term demonstrated that the material was stable in the three conditions used (40°C with a relative humidity of 100%, 20°C and 20°C). The final characterization of the candidate material was performed at NIST, National Institute of Standards and Technology, United States, where values were assigned for eighteen elements with respective expanded uncertainties: Al, Br, Ca, Ce, Cl, Co, Cs, Fe, K, La, Mg, Mn, Na, Rb, Sc, Sm, Th, and Zn. In addition, estimated values were also assigned for Hf, N, P, Sb, Sr and V determined by the Kjeldahl method and INAA
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/.
Pełny tekst źródłaFor the growth of fisheries production in a sustainable way is necessary the development of sound scientific and technological basis, addressing the existing demands in the various links in the production chain. One of the main evidences of the quality of the products is provided by the analytical results, whose reliability and accuracy can be assured by the use of reference materials (RM). In this context, it was produced a RM of fish feed for macro-and micronutrients and proximates and it is in its final stage of development a RM of fish tissue for nutrients and inorganic contaminants. The production of reference materials followed the ISO Guides 30-35 norms: preparation and packaging, irradiation, minimum sample, homogeneity, short- and long-term stability, and material characterization. In order to produce a RMs of fish feed and fish tissue, the matrices were obtained from commercial suppliers. The samples were dried/freeze-dried, pulverized, homogenized and aliquoted into amber glass bottles, which later were subjected to gamma Ray irradiation (5-10 KGy), in order to increase its shelf life. The chemical characterization of the candidate fish feed RM was made through a collaborative trial with the participation of various laboratories of different institutions. The study of minimum sample, homogeneity and stability of the material were performed using inductively coupled plasma optical emission spectrometry (ICP OES) and inductively coupled plasma mass spectrometry (ICP-MS) as determination techniques. The fish feed batch can be considered homogeneous for Ca, Cu, Fe, Mg, Mn and Na, since there was no significant difference in significance level of 0.05. Long-term stability study of the RM of fish feed was performed by the residual analysis in regression and ANOVA and the short-term stability study was performed by simple linear regression. The RM was considered sufficiently stable to be stored at room temperature. The data obtained along the production and through the collaborative trial allowed the characterization of the fish feed RM and the determination of uncertainties components. It was prepared the analysis document with the reference values and expanded uncertainties. The RM of fish tissue was evaluated in its homogeneity and short-term stability and its considered homogeneous and stable to be transported under normal conditions.
Doyle, Wendy. "Maternal nutrition and low birthweight". Thesis, Brunel University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267895.
Pełny tekst źródłaKato, 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/.
Pełny tekst źródłaBasic food of the Brazilian diet, beans are the most important leguminous for direct consumption in the world. Numerous researches on the nutritional properties of common bean and string bean have been performed in order to assess their centesimal and mineral composition as well the antinutritional factors. Regarding the quality of the analytical determinations, it is known that the certified reference materials (CRMs) are becoming increasingly necessary in measurement procedures. However, there is still lack of CRMs to meet the demands from all productive sectors, especially agriculture. Mastering the technology for their production therefore represents a strategic step forward, to put the country in a position to provide specific materials to own needs. Thus, this work involved the first step in developing a bean certified reference material, with chemical and nutritional characterization of the main commercial types available in the market, from the species Phaseolus vulgaris L. (common bean) and Vigna unguiculata (cowpea), meeting the specific metrological demand of research and food industry. In the retail market of the city of Piracicaba, 55 bean samples from ten different commercial types were collected. The chemical elements Br, Ca, Co, Cs, Fe, K, Mo, Na, Rb, Sc and Zn were determined by nêutron activation analysis, the proximate composition using methodology recommended by the AOAC and the anti-nutritional factor phytic acid, according to the method described by Grynspan and Cheryan (1989). The results showed significant differences between commercial bean types (p<0.05) for Br, Cs, Co, K, Mo, Na and Zn, and also for protein, ash, moisture and phytic acid. The black-eyed pea from Vigna unguiculata species showed considerable differences from the common bean Phaseolus vulgaris L. species, having the highest average concentration of Na and the lowest average concentrations of Ca, Co, K and ash (p<0.05). The black bean had the highest average concentrations of Ca, Co, Fe, proteins and phytic acid, while horse bean the highest average concentrations of K, Mo and Zn (p<0.05). The common bean showed mean values close to the global average for all parameters, except for the phytic acid. High variability has been identified for Br, Cs, Mo, Na, Rb and Sc within a commercial type, while low variability was observed for K, Zn, ash, and proteins. The data set resulting from the chemical characterization of 55 samples indicates that the commercial types common bean, black bean and black-eyed pea are more indicated for the production of the certified reference material. Considering the commutability criteria, the common beans could be used to produce a reference material representative of all commercial types studied
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/.
Pełny tekst źródłaFoster, 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.
Pełny tekst źródłaWei, Julia Jia. "Maternal mood during pregnancy, methyl nutrient metabolism, and serotonin transporter". Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/35857.
Pełny tekst źródłaGilbert, 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.
Pełny tekst źródłaAsopa, 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.
Pełny tekst źródłaGopalakrishnan, 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.
Pełny tekst źródłaBrennan, 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.
Pełny tekst źródłaMordhorst, 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.
Pełny tekst źródłaReyaz, 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.
Pełny tekst źródłaEsposito, Nicole C. "Soil Nutrient Availability Properties of Biochar". DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1096.
Pełny tekst źródłaBrett, 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.
Pełny tekst źródłaCowley, 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.
Pełny tekst źródłaBossu, 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.
Pełny tekst źródłaUniversidade Federal de Minas Gerais
The main aim of this work was to produce a candidate material for national reference material, the forage Brachiaria brizantha Stapf. cv. Marandu, containing known levels of contaminants (Cr, Pb, Cd, and As) and macro and micronutrients (Ca, P, Mg, K, Cu, Fe, Mn, Zn and Na). Brachiaria brizantha Stapf cv. Marandu was shown in 400 pots containing 25 kg of soil. The pots were kept in a greenhouse at Embrapa Southeast Livestock located in Sao Carlos, SP. A previous study was conducted in order to establish an appropriate concentration of contaminants that would not harm the dry matter production critically. In order to produce a reference material containing inorganic contaminants in its structure, the dose of 25 mmol/pots was chosen and added into 375 pots. The first harvest occurred after approximately 60 days of plant growth, and the second one after 120 days. Then, the samples were oven-dried at 45°C for 72 hours and grounded first in a cutting mill and then in an ultra-centrifugal mill to reduce particle size. It was produced 20 kg of dried and grounded material. After this, the homogenization and other processes were carried out, including packaging and gamma irradiation dosage in the range of 5-10 kGy to increase the shelf life. Other relevant studies were also undertaken, such as: particle size distribution, betweenbottles and within-bottle homogeneity evaluation, short and long term stability tests using ICP-MS techniques for As, Cd, Cr and Pb, and ICP OES for Ca, P, Mg, K, Cu, Fe, Mn , Zn and Na. Relative humidity and homogeneity between-bottles were also carried out using INAA. All tests presented results within the range of 95%, assuring homogeneity and stability of the candidate material for forage reference material. The consensus values for the 13 elements were determined by collaborative program. All these experiments were performed in accordance with the ISO Guides 30 to 35.
O objetivo do trabalho foi produzir material candidato a material de referencia nacional de forrageira Brachiaria brizantha Stapf. cv. Marandu, contendo teores conhecidos de contaminantes (Cr, Pb, Cd e As) e de macro e micronutrientes (Ca, P, Mg, K, Cu, Fe, Mn, Zn e Na). Foram montados 400 vasos com solo coletado da fracao 0-20 cm, o qual foi corrigido com calcario e N, P e K antes do plantio. Foi feito um estudo previo em 16 vasos, para a definicao de doses de contaminantes que nao prejudicasse de forma critica a producao de materia seca, sendo definida a dose de 25 mmol/vaso de Cr, Pb, Cd e As, adicionados na forma de sais, a cada um dos 375 vasos restantes. Apos aproximadamente 60 dias foi feito o primeiro corte da planta forrageira, sendo o segundo corte realizado apos 120 dias. Apos secagem em estufa a 45 oC e moagem em moinho de facas seguido de segunda moagem em moinho ultra-centrifugo, obteve-se aproximadamente 20 kg de material seco e moido. Apos essa etapa foi realizada a homogeneizacao em homogeneizador tipo Y, envase, irradiacao com raios gama na faixa de dosagem entre 5 e 10 kGy, visando ao aumento do tempo de prateleira e ao mesmo tempo a preservacao das caracteristicas originais da amostra. Em seguida realizou-se os estudos pertinentes, tais como: distribuicao de tamanho de particula, estudos de homogeneidade intra e inter-amostral e estudos de estabilidade a curto e longo prazo utilizando tecnicas de espectrometria de massa com plasma indutivamente acoplado (ICP-MS) para As, Cd, Cr e Pb e espectrometria de emissao optica com plasma indutivamente acoplado (ICP OES) para Ca, P, Mg, K, Cu, Fe, Mn, Zn e Na. Foi feito tambem estudo de umidade relativa e realizado estudo da homogeneidade inter-amostral utilizando analise por ativacao neutronica instrumental (INAA). Os resultados apresentaram medias dentro do intervalo de confianca de 95%, assegurando homogeneidade e estabilidade do material candidato a material de referencia de forrageira. Os valores de consenso para os 13 elementos foram determinados por meio de ensaio colaborativo. Todos estes experimentos foram realizados em conformidade com as ISO Guias 30 a 35.
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.
Pełny tekst źródłaFinanciadora de Estudos e Projetos
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 production of farming products, the demand for soil analysis is great and the existence of a reference material of a typical Brazilian soil is important to ensure the quality of results. In this context, the present work describe the preparate and the characterization of a national reference material for Cr, Pb, Cd, and As soil contaminants and Ca, P, Mg, K, Cu, Fe, Mn, Zn, and Na macro and micronutrients. The material was produced following the internationally accepted ISO Guides 30-35 norms considering the preparation and packaging, homogeneity, short and long term stability, and material characterization and certification. A Typic Paleudult soil was artificially contaminated with As, Cd, Cr, and Pb, added as salt solutions from Pb(NO3)2; Cd(NO3)2.4H2O; Na2HAsO4.7H2O, and Cr(NO3)3.9H2O salts. After 12 month of contamination, 65 kg of soil was dried at room temperature, ground (particles size < 390μm), homogenized, packaged and irradiated with gamma ray (20 - 25 kGy) aiming to increase the shelf-life. The analyte soil extractions were based on methodology recommended by Brazilian legislation (CONAMA N° 420), with in turn follows the protocol established by American environmental agency (USEPA 3051). It was performed by assisted microwave oven with the use of 14 mol L-1 HNO3. The evaluation of the estimate minimum amount, homogeneity and stability of the material were carried out, using inductively coupled plasma optical emission spectroscopy (ICP OES) determination technique. The results were submitted to analysis of variance of single factor (ANOVA). The homogeneity and stability of the material presented means within a confidence interval of 95% for As, Cd, Pb, Cr, Ca, Cu, Fe, Na, K, Mg, Mn, and P. The chemical characterization of the material was performed through a collaborative test and the uncertainties related to each step of the material prepare were calculated to obtain the expanded uncertainty for each one of the analytes and to the final drafting of the control chart with the results of the reference material.
Os materiais de referência certificados desempenham papel fundamental no estabelecimento da rastreabilidade em química analítica, assegurando confiabilidade e exatidão dos resultados de medição e são fundamentais para a validação dos métodos analíticos. A demanda por novos materiais de referência cresce a cada dia, em todas as áreas do conhecimento, entre as quais destaca-se a agricultura. Base para a produção dos produtos agrícolas, a demanda por análises de solo é grande e a existência de um material de referência de solo tipicamente brasileiro é importante para garantir a qualidade dos resultados. Nesse contexto, o presente trabalho descreve o preparo e a caracterização de um material de referência nacional de solo para os contaminantes Cr, Pb, Cd e As e os macro e micronutrientes Ca, P, Mg, K, Cu, Fe, Mn, Zn e Na. O material foi produzido seguindo as etapas, estabelecidas pelas normas ISO GUIAS 30 a 35, internacionalmente aceitas no preparo e envase do material, na avaliação da homogeneidade, no teste de estabilidade a curto e a longo períodos e na certificação do material. O solo utilizado, latossolo vermelho amarelo foi artificialmente contaminado com Cr, Pb, Cd e As, adicionados na forma de soluções preparadas a partir dos seguintes sais: Pb(NO3)2; Cd(NO3)2.4H2O; Na2HAsO4.7H2O e Cr(NO3)3.9H2O. Após 12 meses da adição dos contaminantes, 65 kg de solo foi seco a temperatura ambiente, moído (granulometria < 390 μm), homogeneizado, envasado e irradiado com radiação gama (20 - 25 kGy), visando o aumento do tempo de prateleira. O preparo da amostra visando obtenção dos teores extraíveis dos analitos empregou ácido nítrico 14 mol L-1 com aquecimento assistido por radiação micro-ondas e foi baseada em metodologia recomendada pela legislação brasileira (CONAMA N° 420), que por sua vez segue protocolo estabelecido pelo órgão ambiental americano (USEPA 3051). A avaliação da estimativa da massa mínima, da homogeneidade e da estabilidade do material foi realizada utilizando-se como técnica de determinação a espectrometria de emissão óptica com plasma indutivamente acoplado (ICP OES). Os resultados foram submetidos à análise de variância de fator único (ANOVA). A homogeneidade e a estabilidade do material apresentaram médias dentro do intervalo de confiança de 95% para As, Cd, Pb, Cr, Ca, Cu, Fe, Na, K, Mg, Mn e P do material candidato a material de referência de solo. A caracterização química do material foi realizada por meio do ensaio colaborativo, com a participação de laboratórios nacionais e as incertezas associadas a cada passo da preparação do material foram calculadas para se obter a incerteza expandida para cada analito em estudo e a elaboração final da carta de controle com os resultados do material de referência.
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/.
Pełny tekst źródłaJakrawatana, Napat Civil & 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.
Pełny tekst źródłaAdams, 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.
Pełny tekst źródłaRosa, 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.
Pełny tekst źródłaDe, 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.
Pełny tekst źródłaMaster of Science
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.
Pełny tekst źródłaThesis (PhD (Environmental Sciences))--North-West University, Potchefstroom Campus, 2013
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.
Pełny tekst źródłaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
The research aimed to treat sewage through combined anaerobic/aerobic system, using primary sludge and lysed excess sludge as an endogenous carbon source for removal of nutrients, aiming to produce effluent with low concentrations of organic material and nutrients and lower production excess sludge. The experiment was conducted in three phases. In the first, were performed respirometric tests as tool to assess the biodegradability of lysed biological sludge, through by techniques of cellular lysis induced: mechanical action, thermal and acid-base reaction. In the second phase, was monitored a Sequential Batch Reactor (SBR) together with Fermentation and Hydrolysis Reactor (FHR), which received excess sludge of SBR, tritured by mechanical action and primary sludge. SBR and FHR were operated with TRC of 3.36 and 10 days respectively. The third phase consisted of an anaerobic reactor followed by Immobilized Submerged with support Medium (polyurethane synthetic sponge) Aerated Reactor (ISMAR) operated in recirculation batch system. The results obtained from the respirometric tests found that the thermal sludge showed concentration biodegradable readily material greater than the tritured sludge and treated sludge by acid-base reaction. Values of the percentages of COD solubilized varied from 1.6% to 4.2%, with an average of 2.6%. The system presented promising results for the removal of nutrients, with removal efficiency of 85%, 93% and 98% for phosphorus soluble, nitrate and nitrite, respectively. However, the final effluent was maintained with concentration average of ammonia of 27 mgN-NH , considered out of the discharge standards. The combined system, anaerobic reactor and Immobilized Submerged with support Medium Aerobic Reactor (ISMAR), removed efficiently carbonaceous material (88%), TSS (86%), SSV (90%), TKN (94%) and N-NH4 - (96%). Producing effluent with average concentrations of nitrite and nitrate, respectively of 0.19 mgN-NO2-.L-1 and 2.52 mgN-NO3-.L. After addition of primary sludge the system, this presented a better performance with efficiency of COD removal gross and filtered 95%. However, the process of phosphorus removal was considered unsatisfactory since there was sludge disposal in the ISMAR reactor. Introducing an efficiency of removing just 20% for total phosphorus and 22% for the orthophosphate.
A pesquisa teve como objetivo principal tratar esgotos sanitários através de sistema combinado anaeróbio/aeróbio, utilizando lodo primário e lodo de excesso lisado como fonte endógena de carbono para remoção de nutrientes, buscando produzir efluente com baixas concentrações de material carbonáceo e de nutrientes e menor produção de lodo de excesso. O experimento foi realizado em três fases. Na primeira, foram realizados testes respirométricos como ferramenta para avaliar a biodegradabilidade de lodo biológico lisado, por meio de técnicas de lise celular induzida: ação mecânica, térmica e reação ácido-base. Na segunda fase, foi monitorado um Reator em Batelada Seqüencial (RBS) conjuntamente com Reator de Hidrólise e Fermentação (RHF), o qual recebia lodo de excesso do RBS, triturado por ação mecânica e lodo primário. O RBS e o RHF foram operados com TRC de 3,36 e 10 dias, respectivamente. A terceira fase foi constituída de reator anaeróbio seguido de reator aerado com meio suporte (esponja sintética de poliuretano) submerso imobilizado (RAMSI) operado em regime de bateladas com recirculação. Os resultados obtidos através dos testes respirométricos constataram que o lodo térmico apresentou concentração de material rapidamente biodegradável superior ao lodo triturado e ao lodo lisado por reação ácido-base. Os valores dos percentuais da DQO solubilizada variaram de 1,6% a 4,2%, com uma média de 2,6%. O sistema apresentou resultados promissores para a remoção de nutrientes, com eficiência de remoção de 85%, 93% e 98% para fósforo solúvel, nitrato e nitrito, respectivamente. Entretanto, o efluente final manteve-se com concentração média de nitrogênio amoniacal de 27 mgN-NH4.L-1, considerada fora dos padrões de lançamento. O sistema combinado, reator anaeróbio e reator aeróbio com meio suporte submerso imobilizado (RAMSI), removeram de forma eficiente material carbonáceo (88%), SST (86%), SSV (90%), NTK (94%) e N-NH4 -(96%). Produzindo efluente com concentrações médias de nitrito e nitrato, respectivamente de 0,19 mgN-NO e 2,52 mgN-NO3 -.L-1. Após a adição do lodo primário no sistema, este apresentou um melhor desempenho, com eficiência de remoção de DQO bruta e filtrada de 95%. No entanto, o processo de remoção de fósforo foi considerado insatisfatório, visto que não havia descarte de lodo no reator RAMSI. Apresentando uma eficiência de remoção de apenas 20% para o fósforo total e 22% para o ortofosfato.
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.
Pełny tekst źródłaDeenik, 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.
Pełny tekst źródłaLingas, 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.
Pełny tekst źródłaDowning, 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.
Pełny tekst źródłaM.S.
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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The coastal zone is composed by highly environmental relevance ecosystems therein biodiversity is based on transitional land and marine features. This area has large biological productivity which is sustained by intricate biogeochemistry cycle of chemical species influenced by both adjacent watershed and coastal processes. Another feature of this area is the highly anthropogenic pressures that drive significant modifications of riverine material fluxes. Among such modifications, we can exemplify the damming of rivers and reservoir flooding usually occurred on the State of Ceará. The semi-arid climate enforce a large scheme of water management based on reservoir flooding which might induce changes on riverine fluxes from watershed to the coast as well as the ecosystem feature modification. Considering the above-mentioned scenario, this work aim to quantify the fluxes and budgets of water, suspended matter, and nutrients for the Castanhão reservoir from which the reservoir retention or export capacity of the riverine fluxes of the Jaguaribe watershed to the coast were estimated. Across the Castanhão reservoir water sampled were collected at three areas to characterize the concentration, fluxes, and budgets of riverine materials. According to proposed budget, there were a reduction of suspended matter, phosphorous, and nitrogen concentration. Additionally, the strong reduction of water outflow compared to inflow into reservoir was measured and it is the main process inducing the modification of riverine material fluxes. The budgets showed that the Castanhão reservoir and the operational dam procedure invert the natural functioning of the portion of Jaguaribe drainage basin. According to these results the reservoir changes the land-sea water, suspended matter and nutrient fluxes reducing and trapping from 88% to 98% of inflow loads into reservoir over hydrological and chemical conditions measured.
A zona costeira abriga um mosaico de ecossistemas de alta relevância ambiental, cuja diversidade é marcada pela transição de ambientes terrestres e marinhos. Esta área representa uma elevada produção biológica sustentada por um intricado ciclo biogeoquímico de espécies químicas que acopla processos relacionados tanto à bacia de drenagem dos rios que deságuam nestas áreas quanto os que ocorrem na zona costeira. Outra característica destas áreas é a intensa ação antrópica que tem sido responsável por alterações significativas nos fluxos fluviais destes materiais. Dentre estas alterações podemos exemplificar o barramento dos rios através da formação de reservatórios, usualmente observadas no Estado do Ceará. Devido às condições climáticas imposta pelo clima semi-árido, o Estado do Ceará tem a necessidade de manter um esquema de manejo hídrico baseado na construção de açudes que podem modificar os fluxos fluviais para a zona costeira sugerindo a indução das características destas áreas. Diante do cenário descrito, o objetivo deste estudo é quantificar os fluxos de água, nutrientes e material particulado em suspensão (MPS) ao longo do açude Castanhão e formular balanços de massa com os quais podemos inferir sobre a capacidade e a intensidade do açude em reter ou exportar materiais fluviais da bacia de drenagem do rio Jaguaribe em direção à zona costeira. Ao longo do açude Castanhão foram escolhidos três pontos para a realização das amostragens e a caracterização das concentrações, fluxos e balanços dos materiais fluviais. Segundo o balanço proposto houve uma redução das concentrações de espécies de fósforo e nitrogênio e do MPS. Associado a esta redução pode observar uma intensa redução da vazão de água na entrada em relação à saída da barragem sendo o principal processo que induz a modificação do fluxo fluvial. Os balanços de massa mostram que o açude Castanhão e a rotina de operação da barragem invertem o funcionamento natural desta parte da bacia de drenagem. Segundo os dados apresentados, o açude Castanhão modifica o fluxo fluvial de água, MPS e nutrientes no rio Jaguaribe podendo reter até 98% da carga de entrada e conseqüentemente a transferência destes materiais para a zona costeira.
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.
Pełny tekst źródłaKremmyda, 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/.
Pełny tekst źródłaZhang, 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.
Pełny tekst źródłaSilva, 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.
Pełny tekst źródłaThe 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 of the needs of soil fertilization, including the micronutrients. In this context, this study has the objective of quantifying the micronutrients availability and reserve present in the different types of soils of the region. For this purpose, 22 soil profiles representative of the different soil parent material and profile development found in the region were sampled and chemical analysis of the total, available and oxide bound Cu, Zn, B, Fe and Mn were performed. The results indicate that for the majority of the soils the available and total contents of micronutrients are high, with more likely deficiency possibilities for Cu and B, in this order, related to specific soil parent material types. For Zn and Mn, despite the high available contents, there is the possibility of deficiency in the future due to a low reserve in case the crop withdraw be not returned. The ammonium oxalate extracted Cu and Zn data indicate that the reserve of these micronutrients in low cristallinity Fe (and Mn) is negligible. Only a small fraction of the total Cu is found in oxides in the soils studied, in opposition to the Zn, where in a topsoil it reached around 65%.
As terras altas da região sul do estado do Rio Grande do Sul vêm sendo tradicionalmente utilizadas com pecuária extensiva, que praticamente não demanda análise e correção de solo. O uso sustentável do solo com outras atividades como a silvicultura, que começou a ser implantada em maior escala nos últimos anos, necessita de um conhecimento mais adequado com relação às necessidades de correção do solo, incluindo os micronutrientes. Nesse contexto, este trabalho tem como objetivo quantificar a disponibilidade e a reserva de micronutrientes presentes nos diferentes tipos de solos da região. Para tal, foram coletadas amostras de 22 perfis de solos representativos da variedade do material de origem e do grau de desenvolvimento dos solos presentes na região e realizadas análises químicas dos teores disponíveis, totais e ligados aos óxidos dos micronutrientes Cu, Zn, B, Fe e Mn. Os resultados indicam que para a maioria dos solos os teores disponíveis e a reserva são altos, com maiores possibilidades de deficiência de Cu e B, nessa ordem, em solos oriundos de materiais de origem específicos. No caso do Zn e do Mn, apesar dos teores disponíveis altos, em casos particulares, uma baixa reserva pode gerar possibilidade de deficiência desses micronutrientes no futuro. Os dados de Cu e Zn com oxalato de amônio indicam que a reserva dos micronutrientes Cu e Zn em óxidos de Fe (e de Mn) de baixa cristalinidade é inexpressiva. Nos solos estudados, apenas uma pequena fração do Cu total está presente nos óxidos, ao contrário do Zn onde essa chegou, em um determinado solo, a atingir 65%.
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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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
The intensive search for the reliability of results increases the role of reference materials, mainly in analytical chemistry, because they provide metrological references to ensure traceability of measurements and are still central to the validation of analytical methods. The increasing demand for new reference materials is gradual in all areas of knowledge, but the agricultural and food sectors are among the neediest. In Brazil, this requirement is met only by the import of the material at high costs, being frequently the lack of adequate material to the needs of the country. In this context, this work aimed at the production of reference material for inorganic nutrients and contaminants present in a phosphate rock, the raw material used to manufacture fertilizers. The material was produced by following the next steps, internationally established by ISO GUIDES 30 to 35: preparation and ackaging material, assessment of uniformity, stability test in short and long periods and in prior characterization that was the assembly of the collaborative trial, with the distribution of the prepared material to laboratories that were willing to collaborate with the project.Sample preparation studies also have been conducted, aimed at speed and reduced use of reagents. The evaluation of the estimated minimum mass, homogeneity, and stability of the material was performed using inductively coupled plasma optical emission spectrometry (ICP OES) as determination technique. Phosphorus determination was evaluated by laser-induced breakdown spectroscopy (LIBS).Analysis of single-factor variance (ANOVA) was applied to results and the homogeneity and stability of the material presented averages within the 95% confidence interval. The obtained resultsalong the prepare and with collaborative trialallowed the chemical characterization and the determinationof the uncertainties related to each stage of the preparation of the material, and final preparation of the chart control with results of the reference materialwith the expanded uncertainty for each of the analytes under study.Part of the work was developed by the National Research Council Canada (NRCC) in Ottawa in Canada.The applicability of the microwave-induced combustion for sample preparation of previously prepared national reference materials, bovine liver (RM-Agro E3001a) and forage (RM E1001a-Agro) was evaluated for the determination of As, Cd, Cu, and Pb by inductively coupled plasma mass spectrometry (ICP-MS), and the recults coulb be applied in other organic and inorganic materials.
A intensa busca por confiabilidade de resultados torna cada vez mais importante o papel dos materiais de referência, principalmente em química analítica, pois fornecem referências metrológicas visando assegurar a rastreabilidade de medições e ainda são fundamentais para a validação de métodos analíticos. O aumento da demanda por novos materiais de referência é gradativo em todas as áreas do conhecimento, porém os setores agropecuários e de alimentos estão entre os mais carentes. No Brasil, essa demanda é atendida somente pela importação do material a custos elevados, sendo freqüente a inexistência de materiais adequados às necessidades do país. Nesse contexto, o presente trabalho visou à produção de material de referência para nutrientes e contaminantes inorgânicos em fosfato de rocha, matéria-prima utilizada para a fabricação de fertilizantes. O material foi produzido seguindo as seguintes etapas, estabelecidas internacionalmente pelas ISO GUIAS 30 a 35: preparo e envase do material, avaliação da homogeneidade, teste de estabilidade a curto e a longos períodos e na caracterização prévia, que consistiu na montagem do ensaio colaborativo, com a distribuição do material preparado a laboratórios que se dispuseram a colaborar com o projeto. Ainda foram realizados estudos voltados ao preparo da amostra visando a rapidez e redução de uso de reagentes. A avaliação da estimativa da massa mínima, da homogeneidade e da estabilidade do material foi realizada utilizando-se como técnica de determinação a espectrometria de emissão óptica com plasma indutivamente acoplado (ICP OES). Para a determinação de fósforo foi avaliado o emprego de espectrometria de emissão com plasma induzida por laser (LIBS). Os resultadosforam submetidos à análise de variância e fator único (ANOVA) e a homogeneidade e a estabilidade do material apresentaram médias dentro do intervalo de confiança de 95%. Os resultados obtidos durante o preparo e através do ensaio colaborativo possibilitaram a caracterização química e o calculo das incertezas relativas a cada etapa do preparo do material, sendo elaborada a carta controle com os resultados do material de referência e as incertezas expandidas para cada um dos analitos em estudo. Parte do trabalho foi desenvolvido junto ao National Research Council Canada (NRCC) em Ottawa no Canadá, onde foi avaliada a aplicabilidade do sistema de combustão iniciada por radiação microondas no preparo de amostras de materiais de referência nacionais anteriormente preparados, fígado bovino (RM-Agro E3001a) e forrageira (RM-Agro E1001a), para a determinação de As, Cd, Cu e Pb por espectrometria de massas com plasma indutivamente acoplado (ICP-MS), sendo obtidos resultados que poderão ser aplicados em outros materiais orgânicos e inorgânicos.
Clark, W. Andrew, Norman Assad, Tasha H. Ferrell i 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.
Pełny tekst źródłaFaria, 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/.
Pełny tekst źródłaThis work intends to optimise the utilization of aquatic macrophyte biomass in the adobe (a sun-dried mud brick) production, based on the study of the physical and mechanical characteristics of these bricks and the macrophytes biomass estimate as well as their chemical characteristics. The research was developed in the Salto Grande Reservoir region, in Americana (a town in São Paulo State, Brazil). This lake is located in an area of high urbanization and industrialization level, with common dwelling deficit, which is in advanced artificial eutrophication process by human activity action. The aquatic macrophytes found in that place (Brachiaria arrecta, Eichhornia crassipes and Pistia stratiotes) present a high level of heavy metals and nutrients that make impracticable their utilization as forage or fertilizer. The biomass utilization in the construction of materials appears here as an alternative of integrated management of the lake in the stabilization/solidification (or encapsulation) of these chemical substances, in addition to the fact that it makes possible the self-building of low cost dwellings. The other biomass function is to stabilize the soil that has a high clay concentration (59%, with 21% silt and 20% sandy) and would suffer a large drawing back during the drying process, with the introduction of excessive fissures. This biomass addition was made to reduce these fissures and the specific mass of the bricks. Besides, the research results show that, even though the adobe bricks are perhaps the oldest manufactured building material, their application persists practicable mainly in the sustainability hopes for being a completely ecological building material and adequate for the tropical regions.
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.
Pełny tekst źródłaSanpera, 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.
Pełny tekst źródłaEls rius són ecosistemes complexes i molt diversos. Dins la xarxa fluvial, les rius de capçalera (de 1er a 3er ordre) tenen una gran importància. Els rius de capçalera representen la major part de la longitud total, influencien l’estructura i el funcionament dels rius d’ordre més gran, generen la major part del cabal i donen suport a taxes altes de processament biogeoquímic, amb una alta taxa d’eliminació de nutrients. A més a més, contenen un gran diversitat d’hàbitats, tant dins dels rius com entre ells. De tota la conca, és la zona ripària la que té una més gran influència en l’estructura i el funcionament d’aquests rius. La caiguda de la vegetació i el lixiviat de les fullaraca són importants fonts d’energia per les xarxes tròfiques. Tota l’energia disponible pels consumidors prové dels productors primaris tant de dins com de fora del riu i les xarxes tròfiques estan sustentades per una complexa barreja de recursos al•lòctons i autòctons. En els rius de capçalera, els recursos basals al•lòctons són generalment més importants que les fonts d’energia autòctones. Tot i això, tant la quantitat com la qualitat dels recursos al•lòctons i autòctons influencies l’estructura i el funcionament d’aquests rius. La qualitat dels recursos determina el seu valor nutritiu potencial pels invertebrats que s’alimenten d’ells. La qualitat nutritiva de la matèria orgànica (MO) es pot ser avaluada mesurant la composició elemental o de biomolècules (contingut de polisacàrids, proteïnes i lípids). Els lípids són els components d’emmagatzematge d’energia més eficients, i dins dels lípids, els àcids grassos I els esterols inclouen molècules essencials pels consumidors. En un context de canvi global, els rius estan afectats de forma molt important per múltiples impactes antròpics directes i indirectes, tals com el canvi climàtics, els canvis d’usos del sòl i les alteracions dels cursos fluvials; els quals afecten la hidrologia i la disponibilitat de nutrients i llum, els quals al seu torn, afecten la quantitat i la qualitat dels recursos basals en els rius de capçalera. Dels múltiples factors ambientals afectats pel canvi global, aquest estudi es centra en els canvis en la hidrologia i la disponibilitat de llum i nutrients, en particular als rius de capçalera Mediterranis. Aquest estudi ha estat realitzat principalment a Fuirosos, un riu Mediterrani al nord-est de la Península Ibèrica, però també als canals artificials de Mayfly creek, a les muntanyes de la costa Pacífica de Canadà. En aquest estudi s’han utilitzat diversos mètodes, tal i com la mesura dels fluxos de MO particulada i dissolta, la composició elemental de la MO, l’addició de nutrients; el contingut de clorofil•la, la densitat bacteriana i les activitats enzimàtiques extracel•lulars del biofilm i la mesura de la qualitat bioquímica dels recursos basals (és a dir, els biofilms epilítics i epipsàmics, les fulles i la MO particulada i dissolta transportada). Hem demostrar que El Niño/Oscil•lació del Sud (ENOS) va afectar les aportacions ripàries al riu a través de teleconnexions que van alterar la precipitació mitjana (durant els períodes de El Niño, la precipitació mitjana anual era més baixa, provocant un augment de les aportacions ripàries, degut a l’estrès hídric dels arbres, mentre que durant els períodes de La Niña, la precipitació era més alta que en altres moments, portant a una disminució de les aportacions ripàries). Els períodes de sequera van causar una distribució bimodal de les aportacions ripàries anuals i van reduir la qualitat dels recursos basals, mentre que els episodis de sequera acumulats van provocar la disminució de les aportacions ripàries). Les avingudes van provocar la disminució de la MO bentònica, van augmentar la quantitat de MO transportada i van modificar la seva qualitat. L’addició de nutrients va portar a una disminució del contingut de carboni, i una disponibilitat més alta de llum va provocar una disminució del contingut de proteïnes dels recursos al•lòctons. La qualitat del biofilm era generalment més alta amb l’addició de nutrients quan la disponibilitat de llum era més alta. Considerem que la qualitat nutritiva dels recursos basals és un paràmetre complex. Tot i que la composició elemental i bioquímica poden estar relacionades en alguns casos, el coneixement d’aquesta última permet una millor comprensió dels mecanismes a través dels quals els canvis abiòtics afecten la qualitat dels recursos. Tot i això, la complexitat de mesurar la composició elemental, la composició bioquímica i els àcids grassos, augmenta gradualment. Així doncs, suggerim que la tria dels indicador de qualitat utilitzats dependrà de l’objectiu de l’estudi que es vulgui realitzar i en el balanç entre l’esforç d’anàlisi i la informació que es vol obtenir. Com que les xarxes tròfiques estan sustentades per una complexa barreja de recursos al•lòctons i autòctons, la quantitat i la qualitat d’aquests recursos són factors que limiten la producció secundària en el riu. Així doncs, els canvis observats en aquest estudi, afectaran probablement les xarxes tròfiques fluvials.
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.
Pełny tekst źródłaAbstract: This study aimed evaluate the use of chemical ripeners at different doses and blends in technological quality as well to quantify the sugarcane SP83-2847 leaves and juice mineral levels. The experiment was installed during the 2008/2009 season (May - July 2008) and carried out at "Fazenda São Francisco do Itaquerê" (farm), "Usina Santa Fé" (Sugar Mill), Nova Europa, SP, Brazil under a split-plot. The experiment design was the randomized blocks, in split-plot, with four replications. The 14 main treatments were control (only water); glyphosate; Moddus; Curavial; potassium phosphite; sugar plus, and sugar super plus. Their doses and mixtures were applied at 21st May 2008. The subplots were the sampling dates: -1; 14, 28, 42, 56 and 70 days after application (d.a.a.) and two samples to quantify mineral levels in the leaves and juice (28 and 56 days). The use of glyphosate as ripper and its blends with Moddus, potassium phosphite and sugar plus resulted in raw material technological quality improvement. The same effect was observed using Curavial. According to the ripening the nutrients amount at the second sampling date was significantly lower mainly in the juice. The potassium phosphite and sugar super plus use at 2.0 L ha-1 and 2.5 L ha-1, respectively, did not improve the technological quality. In general, the ripeners did not change the SP83-2847 sugarcane nutrition levels, except for Mn and Fe in the leaves and Fe and Cu in the juice
Orientador: Miguel Angelo Mutton
Coorientadora: Márcia Justino Rossini Mutton
Banca: Marcelo de Almeida Silva
Banca: Durvalina Maria Mathias dos Santos
Mestre
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.
Pełny tekst źródłaQC 20100907
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.
Pełny tekst źródłaREFERAT Modellering av bark-, sand- och kolfilter för rening av BDT-vatten Susanna Ciuk Karlsson I ett hushåll används vatten som då blir till avloppsvatten. Detta avloppsvatten består till stor del av bad, disk och tvättvatten (BDT-vatten). Det är möjligt att behandla BDT-vattnet separat från klosettvattnet då det är mindre förorenat, låta det genomgå rening och sedan använda det för till exempel bevattning av trädgårdar. Det finns olika metoder för att rena BDT-vatten. Här studerades möjligheterna att rena BDT-vatten med hjälp av tre filter av olika material; aktivt kol, tallbark och sand, genom modellering i datorprogrammet HYDRUS. En praktisk experimentuppsättning med filterkolonner fanns att tillgå, där ett experiment med flödesmätningar genomfördes. Mätningarna användes för att validera modellen som utvecklades i HYDRUS. Efter att en flödesmodell som stämde överrens med uppmätta värden utvecklats, modellerades reaktiv transport av näringsämnen och organiskt material i filtren med en modul tillhörandes HYDRUS. Med hjälp av modelleringen kunde filtertypernas reningsförmåga utvärderas för ett iscensatt standardscenario där filtrena belastades med 1 l vatten/dag innehållandes föroreningar motsvarandes ett typiskt gråvatten.
Swart, Etheresia, i 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.
Pełny tekst źródłaMorris, 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.
Pełny tekst źródłaFranzé, 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.
Pełny tekst źródłaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Usina São Martinho
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 potássio; sugar plus e sugar super plus, em suas doses e misturas aplicados no dia 21/05/2008. As subparcelas constituíram-se em seis épocas de amostragens para análises tecnológicas (-1; 14, 28, 42, 56 e 70 dias após a aplicação – d.a.a.) e duas épocas para avaliação do teor de nutrientes nas lâminas foliares (LF) obtidas das folhas +1 e caldo de cana (28 e 56 d.a.a.). O uso de glifosato como maturador e em mistura com Moddus, fosfito de potássio e sugar pus apresentaram os melhores resultados tecnológicos, o mesmo observado com o uso do Curavial. Em função da maturação a quantidade de nutrientes na segunda época de avaliação foi significativamente menor principalmente no caldo. O uso do fosfito de potássio e do sugar super plus, nas dosagens de 2,0 L ha-1 e 2,5 L ha-1, respectivamente, não incrementaram a qualidade. No geral, os maturadores utilizados não alteraram a composição nutricional da cultivar SP83-2847, exceto para Mn e Fe nas lâminas foliares e de Fe e Cu no caldo
This study aimed evaluate the use of chemical ripeners at different doses and blends in technological quality as well to quantify the sugarcane SP83-2847 leaves and juice mineral levels. The experiment was installed during the 2008/2009 season (May – July 2008) and carried out at “Fazenda São Francisco do Itaquerê” (farm), “Usina Santa Fé” (Sugar Mill), Nova Europa, SP, Brazil under a split-plot. The experiment design was the randomized blocks, in split-plot, with four replications. The 14 main treatments were control (only water); glyphosate; Moddus; Curavial; potassium phosphite; sugar plus, and sugar super plus. Their doses and mixtures were applied at 21st May 2008. The subplots were the sampling dates: -1; 14, 28, 42, 56 and 70 days after application (d.a.a.) and two samples to quantify mineral levels in the leaves and juice (28 and 56 days). The use of glyphosate as ripper and its blends with Moddus, potassium phosphite and sugar plus resulted in raw material technological quality improvement. The same effect was observed using Curavial. According to the ripening the nutrients amount at the second sampling date was significantly lower mainly in the juice. The potassium phosphite and sugar super plus use at 2.0 L ha-1 and 2.5 L ha-1, respectively, did not improve the technological quality. In general, the ripeners did not change the SP83-2847 sugarcane nutrition levels, except for Mn and Fe in the leaves and Fe and Cu in the juice
Borgestedt, Helena, i 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.
Pełny tekst źródłaNäringsämnet fosfor är nödvändigt för alla levande organismer och kan inte ersättas av något annat grundämne. Den globala fosforcykeln är speciell då den inte innehåller några gasformiga föreningar och sluts var 10-100 miljonte år. Användning av konstgödsel, omvandling av tidigare orörda ekosystem till odlingsmark och utsläppav förorenat avfall är exempel på mänskliga aktiviteter som intensifierar fosforflöden. Problemet med att linjäraflöden av denna begränsade resurs leder till övergödning av vattenmiljöer har genererat nationella miljömål i Sverige för fosfor. Det huvudsakliga målet med detta examensarbete är att få en översikt av hur fosfor rör sig genom Göteborg idag med hjälp av substansflödesanalys. Den rumsliga systemgränsen är kommungränsen för Göteborg och den tidsmässiga avgränsningen är året 2009. Ett sätt att förbättra de linjära fosforflödena kan vara att utveckla deavloppssystem som idag används i Göteborg. Förändringarna som uppstår i fosforflödena vid installation av urinsorterande toaletter alternativt köksavfallskvarnar undersöks. Linjära flöden måste bli återcirkulerade i en högre utsträckning än idag ifall fosforhushållningen ska gå mot hållbarhet. Ett sätt att nå denna ambition är att lyfta fram andra gödselprodukter än konstgödsel, exempelvis urin och renare slam. Flödesanalysen visar att det definitivt största inflödet av fosfor till Göteborg är via livsmedel. De två största fosforutflödena, båda i samma storleksordning, är rötat slam från Ryaverket och aska från sopförbränningsanläggningen Sävenäs. Cirka 7% av den fosfor som flödar in i Göteborg fortsätter vidare ut i vattenmiljön. Enligt denna studie verkar urinsortering och separat insamling av matavfall vara goda lösningar för en framtid med mindre fosfor i slammet från Rya och i aska samt till vattenmiljön. En ytterligare fördel skulle vara erhållandet av hållbara gödselprodukter med god kvalitet.
This master thesis has also been published as a technical report at Chalmers with Report No. 2011:124.