Literatura académica sobre el tema "Concentrate"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Concentrate".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Artículos de revistas sobre el tema "Concentrate"
1
Orellana-Palma, P., G. Petzold, I. Andana, N. Torres y C. Cuevas. "Retention of Ascorbic Acid and Solid Concentration via Centrifugal Freeze Concentration of Orange Juice". Journal of Food Quality 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/5214909.
Texto completoResumen
Freeze concentration of liquid foods produces high-quality concentrates while retaining the heat-labile compounds found in fresh samples. Centrifugal freeze concentration is a cryoconcentration method assisted by an external force, centrifugation, to enhance the separation of concentrate from the ice. When applying centrifugal freeze concentration to orange juice, after the third cryoconcentration cycle, the ascorbic acid content in the concentrate showed retention close to 70% of the initial value. After the third cycle, the solutes in the concentrate increased 4 times the initial value of the fresh sample with 70% efficiency. The color evaluation showed that the final concentrated fraction was darker than the fresh juice. The centrifugal freeze concentration in orange juice was effective for obtaining a high-quality concentrate with a higher concentration of solids and ascorbic acid retention.
2
Pelevin, A. E. "Ways of efficiency increasing of iron ore raw materials concentration technology". Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 75, n.º 2 (10 de marzo de 2019): 137–46. http://dx.doi.org/10.32339/0135-5910-2019-2-137-146.
Texto completoResumen
Iron ore raw materials quality to a great extent determines technical and economic indices of metallurgical production. A brief characteristic of main types of iron ores of Russia quoted. It was shown, that they require concentration for utilization them in metallurgical production. Concentration flow charts of main types of iron ores considered. Main ways of iron ore raw materials concentration flow charts perfection directed on concentrates quality increase, concentration specific costs decrease and increase of raw materials utilization complexity. At Lebedinsky mining and concentration complex (MCC) at the expense of additional milling and concentration of high quality concentrate, a super-concentrate is produced having the iron mass content no less than 69.5% and silica content no more than 3.5%. The increase of iron mass content is 1.5–2%. At Mikhajlovsky MCC additional concentration of regular concentrate with iron mass content 65.5–66% enables to produce a super-concentrate having the iron mass content no less than 69% and silica mass content no more than 3%. The increase of iron mass content is 3–3.5%. Fine hydraulic screening is used at Kostomuksha and Kovdor MCCs for adjusting of regular concentrates. The undersize of sizing screens is a high quality concentrate, and oversize fraction is an intermediate product subjected to additional milling and concentration. When using the fine hydraulic screening, the super-concentrates are not obtained. Indices of super-concentrates production with application of separation in an alternative magnetic field quoted. Low complexity of iron ore raw materials utilization is typical at concentration of hematitemagnetite quartzite ores. In Russia the hematite-magnetite quartzite ores are mined and concentrated at three MCCs as follows: Olenegorsky, Mikhajlovsky and Kimkano-Sutarsky. Flow-charts and indices of magneto-gravitation concentration quoted, applied for hematite concentrate production. Stage separation of not only tails but also of concentrates is one of methods of expenses decreasing. A diagram of concentrate stage separation with application of concentration method or fine screening considered. Results of industrial application of flow-charts with concentrate stage separation quoted, the application taken place at Kachkanar MCC with application of two methods – wet magnetic concentration and fine hydraulic screening.
3
Pimentel, Joabe Jobson de Oliveira, Rogério de Paula Lana, André Soares de Oliveira, Rafael Monteiro Araújo Teixeira y Daniel Carneiro de Abreu. "Dairy cows feeding with sorghum silage supplemented with concentrate". Pesquisa Agropecuária Tropical 43, n.º 3 (septiembre de 2013): 255–61. http://dx.doi.org/10.1590/s1983-40632013000300013.
Texto completoResumen
Concentrated feed can be used to increase the milk yield in dairy farms. However, the feeding cost increases when concentrates are used and, sometimes, farmers lose competitiveness, if the cows do not produce what is expected with supplementation. Thus, this study aimed at evaluating the nutrients intake, milk yield and composition and live weight change of dairy cows fed with sorghum silage alone or supplemented with concentrates. Nine crossbred cows (Holstein-Gyr) were allocated in three balanced Latin squares and fed with sorghum silage supplemented with minerals (0.2 kg) or with 2.6 kg (38.5% of crude protein) or 5.0 kg (20% of crude protein) of concentrate per day, aiming at supplying the same amount of crude protein (1.0 kg day-1). The dry matter intake and milk yield were higher for the cows fed with concentrate, independently of its protein level. The productive response (in kg of milk per kg of concentrate) was 1.67 and 0.83, respectively for the low and high supplemental levels. The cows that received only minerals lost weight, while those fed with concentrate gained weight. The cows which produced 13.0 kg of milk day-1 showed a higher increase in milk yield when fed with supplements containing high protein and mineral contents. The response for milk production per kg of concentrate was higher when lower amounts of concentrate with high protein and mineral levels were used, allowing a reduction in the production costs.
4
Mitrofanova, Galina, Valentina Marchevskaya y Anastasiya Taran. "Flotation separation of titanite concentrate from apatite-nepheline-titanite ores of anomalous zones of the Khibiny deposits". Записки Горного института 256 (10 de noviembre de 2022): 560–66. http://dx.doi.org/10.31897/pmi.2022.81.
Texto completoResumen
Titanium raw materials are widely used for the synthesis of various functional materials – sorbents of radionuclides and rare earth elements, various additives, filler pigments, etc. Since most of titanium concentrates are imported, in line with the import substitution program, production of titanite concentrate from apatite-nepheline ores of the Khibiny deposits is a promising trend for supplying national industry with titanium raw materials. The article presents the results of laboratory studies of flotation separation of titanite concentrate from apatite-nepheline-titanite ores extracted from the upper ore horizon of the Koashvinskoye deposit, where titanite-enriched ores are concentrated. Recovery of titanite concentrate was accomplished using two reagent modes – a mixture of alkyl hydroxamic and carboxylic acids with the addition of distilled tall oil and a mixture of tall oils with the addition of polyalkyl benzene sulfonic acids. The results of the research showed that the first flotation mode, which allows a selective recovery of titanite into the concentrate (titanite content in the concentrate was 93.5 %) is the most efficient. It was shown that flotation separation of titanite concentrate is preferable compared to the chemical method based on sulfuric acid leaching.
5
Mayne, C. S. y J. G. Doherty. "The effect of fine grinding or sodium hydroxide treatment of wheat, offered as part of a concentrate supplement, on the performance of lactating dairy cows". Animal Science 63, n.º 1 (agosto de 1996): 11–19. http://dx.doi.org/10.1017/s135772980002823x.
Texto completoResumen
AbstractA study was conducted to examine the effect of fine grinding or sodium hydroxide treatment of wheat, and increasing concentrate food level, on milk production. Two concentrates based either on ground wheat (450 g/kg, GW) or sodium hydroxide treated wheat (500 g/kg, SW) were offered at four concentrate levels of 2·5, 5·0, 7·5 and 10·0 kg dry matter (DM) per day to 24 dairy cows in a three-period, change-over design experiment. On average, across all concentrate food levels, silage DM intake was significantly (P < 0·01) higher with the SW concentrates, reflecting a significantly lower silage substitution rate with SW relative to GW concentrates (P < 0·01). Milk yield was also significantly higher with the SW concentrates (P < 0·05), although marginal responses to increased concentrate food level were similar (P > 0·05). Milk protein concentration increased linearly with increasing concentrate food level (P < 0·001), with a significantly greater response with the GW relative to the SW concentrate (0·59 v. 0·24 g/kg (P < 0·05) increase per kg additional concentrate). However, milk protein concentration was also significantly lower with the GW concentrate at low food levels (P < 0·05). Milk fat concentrations were similar with the two concentrate types with significant reductions in milk fat concentration with increasing concentrate food level (P < 0·05). Blood urea (P < 0·001) and β-hydroxybutyrate (P < 0·05) concentrations were significantly lower in animals offered the SW concentrate. Apparent digestibility coefficients were unaffected by either concentrate type or concentrate food level (P > 0·05), although modified acid-detergent fibre apparent digestibility was significantly reduced with increasing concentrate food level (P < 0·001). Results indicate that, at similar levels of concentrate feeding, silage intake and milk yield were significantly greater with SW compared with GW concentrates (P < 0·05 or greater). Increases in milk protein concentration with increasing concentrate food level were significantly greater with GW than with SW concentrates (P < 0·05).
6
Al-Hassoon, Ahmed Sh. "Processing of fish protein concentrate by using saline concentrates and study some of its quality". IRAQI JOURNAL OF AQUACULTURE 10, n.º 1 (2013): 55–62. http://dx.doi.org/10.21276/ijaq.2013.10.1.4.
Texto completo
7
Abun, Abun, Tuti Widjastuti y Kiki Haetami. "Effect of the Nutrient Concentrate in Ration on Performance of Local Chickens". European Journal of Zoology 1, n.º 1 (10 de agosto de 2022): 1–4. http://dx.doi.org/10.24018/ejzoo.2022.1.1.8.
Texto completoResumen
Efforts towards improving the quality of shrimp waste are through bioprocess using Bacillus licheniformis service, Lactobacillus sp., and Saccharomyces cerevisiae to obtain a quality product (Nutrient Concentrate) to meet the needs of local chicken's nutrition. The study's objective was to obtain an adequate level of use of Nutrient Concentrate in the local chicken ration during the growth phase. Research using the experimental method in the laboratory. The experimental design used was a complete randomized design, consisting of 6 treatment rations (R0 = low protein ration (15%), R1 = Ration containing 5% concentrated nutrient, R2 = Ration containing 10% concentrate nutrient R3 = Ration containing 15% nutrient Concentrate R4 = Ration contains 20% concentrate nutrient, and RS = high protein ration (18%) and each is repeated 5 times. The data were analysed by variance, and the differences between treatments were tested by Duncan's multiple range test. The results of the research were: (1) The best growth of local chickens (consumption of ration, weight gain, and ration efficiency) was given by ration containing 10% concentrate nutrient (15% ration protein) and the equivalent of high protein ration (protein ration 18 %), and (2) Nutrient concentrates can be used up to 20% in a local chicken ration of growth phase without affecting chicken health (erythrocytes = 1.87-2.20 × 106, leukocytes = 29.08-37,72 × 103, and haematocrit = 30.80-33.80%).
8
Ivković, Zoran, Clemens Sialm y Scott Weisbenner. "Portfolio Concentration and the Performance of Individual Investors". Journal of Financial and Quantitative Analysis 43, n.º 3 (septiembre de 2008): 613–55. http://dx.doi.org/10.1017/s0022109000004233.
Texto completoResumen
AbstractThis paper tests whether information advantages help explain why some individual investors concentrate their stock portfolios in a few stocks. Stock investments made by households that choose to concentrate their brokerage accounts in a few stocks outperform those made by households with more diversified accounts (especially among those with large portfolios). Excess returns of concentrated relative to diversified portfolios are stronger for stocks not included in the S&P 500 index and local stocks, potentially reflecting concentracted investors' successful exploitation of information asymmetries. Controlling for households' average investment abilities, their trades and holdings perform better when their portfolios include fewer stocks.
9
Rani, Jyoti, Anil Shelke, Bharti Bansal y Vinay Gautam. "Concentrate development from Litchi Juice and quality evaluation during storage". Journal of Physics: Conference Series 2070, n.º 1 (1 de noviembre de 2021): 012072. http://dx.doi.org/10.1088/1742-6596/2070/1/012072.
Texto completoResumen
Abstract An attempt has been made to concentrate Litchi juice using fresh juice, using class-II preservatives via laboratory scale single stage single effect glass evaporator with vacuum in a batch. Two litchi varieties viz. Dehradun and Seedless late were procured from the Regional Fruit Research Station, Gangian (Distt. Hoshiarpur) and processing was done at Food Science and Technology department (Punjab Agricultural University, Ludhiana, Punjab) pilot-plant. The extraction of juice was attempted via screw-based juice extractor with subsequent muslin cloth filtration. The filtered juice was divided into two lots of which one was concentrated via evaporation while another was preserved using 2000 ppm potassium metabisulphite in glass bottles for later on concentration. The juice was concentrated at 50-55oC temperature with a vacuum of 27-30 inches of Hg. The final concentration of juice was maintained at 80 oBrix in all the cases. Product was packed in pearl pet jars and was stored at ambient room temperature (12-38 oC) (RT) and low temperature (LT) i.e., refrigerated (0-4oC) for 6 months periodic quality evaluation like physico-chemical because of storage. Stored product was analyzed at 0, 2, 4 and 6 months interval for various storage physico-chemical changes like TSS, pH, acidity, ascorbic acid, sugars, browning, pectin, viscosity, tannins and sensory quality. The result outcome proposed that seedless variety yield more juice, pulp and less seed in comparison to Dehradun variety while the sensory characteristics were found more acceptable in Dehradun variety rather than Seedless variety. Physico-chemical properties observed in concentrates from both litchi varieties doesn’t show much difference but a clear difference can be seen room temperature stored concentrate to low temperature stored concentrate. The flow behavior for the concentrates was found to be decreasing slightly with storage period as compared to controls. However, considerable decrease in flow behavior index was observed for the concentrates prepared from Dehradun variety stored at low temperature for 6 months to the seedless variety. The consistency index values has shown positive drift with extending storage time especially for those low temperature concentrates. So, it can be said concentrates from both varieties could be commercially produced with acceptable sensory characteristics.
10
Konovalov, A. M., M. A. Lomskov, S. L. Nesterchuk y V. A. Ostapenko. "The effect of the concentrated antioxidant mixture “Eurotiox Concentrate Dry” on the safet of the feed mixture for minks". IOP Conference Series: Earth and Environmental Science 979, n.º 1 (1 de febrero de 2022): 012017. http://dx.doi.org/10.1088/1755-1315/979/1/012017.
Texto completoResumen
Abstract The article presents studies of the concentrated antioxidant mixture “Eurotiox Concentrate Dry” when it is used in the feed mixture of young minks. Organoleptic parameters of feed mixture are analyzed. The results of chemical analysis of native feed mixture (without Eurotiox Concentrate Dry) and feed mixture using a concentrated antioxidant mixture are presented. The authors revealed that the feed mixture for minks when using Eurotiox Concentrate Dry retains its quality indicators in the permissible concentration. The use of a concentrated antioxidant mixture Eurotiox concentrate Dry, has a stabilizing effect on the feed mixture for minks during the storage.
Tesis sobre el tema "Concentrate"
1
Carvalho, Fernando Kassis [UNESP]. "Viscosidade, tensão superficial e tamanho de gotas em caldas com formulações de inseticidas e fungicidas". Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/143780.
Texto completoResumen
Submitted by FERNANDO KASSIS CARVALHO null (kassis@fca.unesp.br) on 2016-08-29T19:23:30Z
No. of bitstreams: 1
CARVALHO, F. K. 2016-08.pdf: 932028 bytes, checksum: f12a2b32ad725d9540dd31504543e3ba (MD5)Rejected by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo a orientação abaixo: O arquivo submetido está sem a ficha catalográfica. A versão submetida por você é considerada a versão final da dissertação/tese, portanto não poderá ocorrer qualquer alteração em seu conteúdo após a aprovação. Corrija esta informação e realize uma nova submissão contendo o arquivo correto. Agradecemos a compreensão. on 2016-08-30T18:07:47Z (GMT)
Submitted by FERNANDO KASSIS CARVALHO null (kassis@fca.unesp.br) on 2016-09-02T11:58:50Z No. of bitstreams: 1 CARVALHO, F.K. 2016, V. Final.pdf: 1016483 bytes, checksum: cf68735a1cb9f998edf263c91e8f78d0 (MD5)
Rejected by Ana Paula Grisoto (grisotoana@reitoria.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo a orientação abaixo: O arquivo submetido não contém o certificado de aprovação. A versão submetida por você é considerada a versão final da dissertação/tese, portanto não poderá ocorrer qualquer alteração em seu conteúdo após a aprovação. Corrija esta informação e realize uma nova submissão contendo o arquivo correto. Agradecemos a compreensão. on 2016-09-02T20:28:27Z (GMT)
Submitted by FERNANDO KASSIS CARVALHO null (kassis@fca.unesp.br) on 2016-09-05T12:44:17Z No. of bitstreams: 1 Tese V15 CARVALHO, F.K...pdf: 1222042 bytes, checksum: 739b1439b95a7990d14a578862e4d136 (MD5)
Approved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2016-09-05T16:34:41Z (GMT) No. of bitstreams: 1 carvalho_fk_dr_bot.pdf: 1222042 bytes, checksum: 739b1439b95a7990d14a578862e4d136 (MD5)
Made available in DSpace on 2016-09-05T16:34:41Z (GMT). No. of bitstreams: 1 carvalho_fk_dr_bot.pdf: 1222042 bytes, checksum: 739b1439b95a7990d14a578862e4d136 (MD5) Previous issue date: 2016-06-29
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O objetivo desta pesquisa foi avaliar a interferência de três tipos de formulações de inseticidas e fungicidas na tensão superficial, viscosidade e espectro de gotas de caldas de pulverização. O experimento foi conduzido na forma de um fatorial 2 x 3, duas classes de produtos fitossanitários e três tipos de formulações, em um delineamento experimental inteiramente casualizado. Quando recomendados em bula, adjuvantes foram adicionados às caldas de pulverização, sendo analisados separadamente daqueles tratamentos sem adjuvantes. Cada tipo de formulação foi representado por cinco produtos comerciais. As formulações utilizadas foram concentrado emulsionável (EC), suspensão concentrada (SC) e granulado dispersível (WG). As concentrações das caldas foram simuladas para uma taxa de aplicação de 50 L ha-1 e as pulverizações foram realizadas utilizando-se a ponta XR 8003VS, na pressão de 200 kPa. A formulação WG resultou nos maiores valores de tensão superficial (TS) e percentual do volume aplicado composto por gotas menores do que 100 µm (%<100 µm), e os menores valores de diâmetro mediano volumétrico (DMV). O acréscimo de adjuvantes à base de óleo mineral e vegetal aumentou o DMV e reduziu a amplitude relativa do espectro de gotas (AR), TS e o %<100 µm comparado aos mesmos tratamentos sem adjuvantes. A formação de emulsões, decorrentes do uso dos adjuvantes ou de formulações EC, foi mais eficaz em reduzir o %<100 µm, AR e a TS e em aumentar o DMV do que aquelas que formaram dispersões, representadas pelas formulações WG e SC de inseticidas e fungicidas. A formulação dos produtos comerciais deve ser considerada como fator para o planejamento da segurança ambiental e qualidade das aplicações, uma vez que existe um padrão de interferência das formulações de inseticidas e fungicidas avaliadas na AR, DMV, DV01, esfericidade e %<100 µm.
The objective of this study was to evaluate the interference of tree types of formulations of insecticides and fungicides on surface tension, viscosity, and droplet size spectra of spray solutions. It was conducted in a 2 x 3 factorial design, two classes of pesticides and tree types of formulations, in a completely randomized experiment. When it was prescribed on the label, adjuvants were mixed on the spray solution, but these treatments were analyzed apart from those without adjuvants. Each type of formulation was represented by five commercial products. The selected formulations types were emulsifiable concentrate (EC), suspension concentrate (SC) and water dispersible granules (WG). The concentrations of the spray solutions were calculated supposing a spray rate of 50 L ha-1 and the applications were done using a XR 8003VS nozzle, at operating pressure of 200 kPa. The WG formulation resulted on the highest surface tension (ST) and percentage of droplets smaller than 100 µm (%<100 µm), and the lowest volume median diameter (VMD). The use of mineral and vegetal oils increased the VMD and decreased the relative Span, ST and %<100 µm, compared with the respective treatments without adjuvants. The formation of emulsions, resulted from using the adjuvants or EC formulations, on the spray solutions were more efficient on decreasing the %<100 µm, RS, and ST, and on increasing VMD than those formulations that resulted on the formation of dispersions, represented by WG and SC formulations of insecticides and fungicides. Formulations of commercial pesticides may be considered an aspect for planning the protection of the environment and the quality of spray applications, once it exists a pattern of interference of the studied formulations of insecticides and fungicides on relative Span, VMD, DV01, sphericity and %<100 µm.
CAPES: 99999.003632/2015-06
2
Leite, Helia Maria de Souza. "Terminação de cordeiros alimentados com dieta de alto grão em sistema de confinamento". Universidade Federal Rural do Semi-Árido, 2017. http://bdtd.ufersa.edu.br:80/tede/handle/tede/823.
Texto completoResumen
Submitted by Socorro Pontes (socorrop@ufersa.edu.br) on 2018-02-16T15:03:17Z
No. of bitstreams: 1
HeliaMSL_TESE.pdf: 1102082 bytes, checksum: 960a39ace6d2fbbcba482fe77e6ee546 (MD5)Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2018-02-20T14:28:49Z (GMT) No. of bitstreams: 1 HeliaMSL_TESE.pdf: 1102082 bytes, checksum: 960a39ace6d2fbbcba482fe77e6ee546 (MD5)
Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2018-02-20T14:31:08Z (GMT) No. of bitstreams: 1 HeliaMSL_TESE.pdf: 1102082 bytes, checksum: 960a39ace6d2fbbcba482fe77e6ee546 (MD5)
Made available in DSpace on 2018-02-20T14:31:17Z (GMT). No. of bitstreams: 1 HeliaMSL_TESE.pdf: 1102082 bytes, checksum: 960a39ace6d2fbbcba482fe77e6ee546 (MD5) Previous issue date: 2017-09-25
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
The objective of the study was to evaluate the effect of different proportions of high-level diets on finishing lambs in feedlot system on performance. However, there is no ingestive and physiological behavior, as well as carcass characteristics, quality physical and chemical characteristics of meat and production costs. For this purpose, whole corn grain associated with the protein-mineral-vitamin supplement was used in three proportions of concentrate: bulky (100%, 80:20 and 60:40%), a concentrated portion of the diet composed of 85 % of whole corn grain and 15% of supplement and bulky portion of Tifton hay). Twentyfour non-castrated males with no defined racial pattern were used with initial weight of 20.9 ± 1.0 kg at the age of 6 months. Weight gain was achieved in the three diets tested from 0.302g / day for 100% diet, 0.254g / day to 80:20 and 0.259g / day for 60:40 Minor rumination time (P≤0.05) in lambs of the treatment based on grain 100% when compared to the lambs of the other treatments. The 100% diet presented higher feed efficiency (EAL) and also more efficient rumination (ERU). Evaluating a temperature of the rumen region, it can be seen that the animals that received a 100% diet showed the variation of the temperature of the reen region, as 80:20 and 60: 40% diets affect nearby temperatures. As evaluated diets contributed to the performance with satisfactory gains, although preferences of use of diet of high grade, these guarantee like basic actions. There was a significant effect on carcass yield. A 100% concentrated diet showed a carcass yield of 47%, while for 80: 20% and 60: 40% diets obtained carcass yield values of 43.5% and 43.4%, respectively. The gastrointestinal content also had an effect, being lower in treatments 100% and 80: 20%. (P> 0.05) in the variables pH, temperature, color, water retention capacity and shear force. The 100% treatment presented a weight loss in cooking as well as superior thiobarbituric acid (TBARS) when compared with other diets. The 100% diet, when compared with other diets, obtained an additional carcass weight of 2.30 kg per animal. The use of the 100% concentrated diet in lamb termination systems is a more viable alternative from a productive and economical point of view
RESUMO: Objetivou-se com o estudo avaliar o efeito de diferentes proporções de dietas de alto grão na terminação de cordeiros em sistema de confinamento sobre o desempenho e alterações no comportamento ingestivo e fisiológico, assim como as características de carcaça, qualidade físicas e químicas da carne e custos de produção. Utilizou-se para tal, grão de milho inteiro associando ao suplemento protéico-mineral-vitamínico em três proporções de concentrado:volumoso, (100%, 80:20% e 60:40%), sendo a porção concentrada da dieta composta de 85% de grão de milho inteiro e 15% de suplemento e a porção volumosa de feno de Tifton). Foram utilizados 24 machos não castrados, sem padrão racial definido com peso inicial de 20,9 ± 1,0kg com idade de 6 meses. Conseguiu-se obter ganhos de peso nas três dietas testadas de 0,302g/dia para dieta 100%, 0,254 g/dia para 80:20 e 0,259 g/dia para 60:40 O tempo de ruminação foi menor (P≤0,05) nos cordeiros do tratamento à base de grão 100% quando comparados aos cordeiros dos demais tratamentos. A dieta 100% apresentou maior eficiência de alimentação (EAL) e também mais eficiente na ruminação (ERU). Avaliando a temperatura da região do rúmen percebe-se que os animais que receberam a dieta 100% apresentaram acentuada variação de temperatura da região do rémen, as dietas 80:20 e 60:40% apresentam alterações de temperaturas próximas. As dietas avaliadas contribuíram para o desempenho com ganhos satisfatórios, apesar de ocorrer alterações comportamentais com uso da dieta de alto grão, estas garantem as ações básicas necessária para manter a saúde ruminal adequada. Houve efeito significativo para rendimento de carcaça. A dieta 100% concentrado apresentou um rendimento de carcaça de 47%, enquanto as dietas 80:20% e 60:40% obtiveram valores para rendimento de carcaça de 43,5% e 43,4% respectivamente. O conteúdo gastrointestinal também apresentou efeito, sendo menor nos tratamentos 100% e 80:20%. Para os parâmetros físicos da carne, não foi observado diferenças significativa (P>0,05) nas variáveis pH, temperatura, cor, capacidade de retenção de água e força de cisalhamento. O tratamento 100% apresentou uma menor perda de peso na cocção assim como também apresentou ácido tiobarbitúrico (TBARS) superior quando comparado as demais dietas. A dieta 100%, quando comparado as demais dietas, obteve-se um peso adicional de carcaça de 2,30 Kg por animal. O uso da dieta 100% concentrado em sistemas de terminação de cordeiros é a alternativa mais viável do ponto de vista produtivo e econômico
2018-01-31
3
Khan, M. M. "Selective flocculation of lead-zinc concentrate". Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355440.
Texto completo
4
MAIA, EDUARDO SILVA. "PELLETIZING AND REDUCING OF MAGNETITE CONCENTRATE". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18544@1.
Texto completoResumen
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROA tendência mundial de aumento da quantidade de finos (sinter feed e pellet feed) nas lavras de minério de ferro tem elevado a importância dos processos de aglomeração, em especial a pelotização, que tem por característica produzir pelotas de excelente qualidade química e alta resistência mecânica, além de ser um processo menos poluente que a sinterização. Atualmente, as jazidas de minério de ferro em lavra no Brasil, exploram minérios predominantemente hematíticos (hematita e/ou itabirito). Apesar do país não possuir tradição na exploração de minérios magnetíticos, existem ocorrências destes que vêm despertando crescente interesse, sendo, contudo, necessário à adequação das etapas do beneficiamento mineral e dos parâmetros operacionais da pelotização. O presente trabalho, fruto de uma interação da empresa Metal Data S/A e o Grupo de Siderurgia do DEMa/PUC-Rio, trata do estudo da pelotização de um minério de ferro magnetítico, proveniente de uma jazida brasileira em fase de pesquisa mineral, com o objetivo de analisar sua viabilidade exploratória para produção de pelotas a serem utilizadas como matéria prima na indústria siderúrgica. Os procedimentos experimentais foram divididos em três etapas: tratamento do minério, pelotização e redução, buscando assim, definir uma rota de tratamento do minério e, posteriormente, a caracterização química, mecânica e metalúrgica das pelotas produzidas. Foram estudados três tipos de misturas para a pelotização, envolvendo oito diferentes concentrados. Os resultados indicaram que o minério magnetítico é passível de concentração e capaz de produzir um pellet feed de qualidade, utilizando rota de beneficiamento com operações unitárias típicas. Este material mostrou potencial para a formação de pelotas cruas em discos de laboratório e, após as operações de queima, produziu pelotas que apresentaram granulometria entre 9,5 e 16,0 mm, resistência à compressão de 126 a 339 kg/pelota, índice de tamboramento de 67,7 a 94,9 %, porosidades de 23,8 a 40,74%, grau de metalização de 30 a 75%, entre outras.
The global increasing trend of producing iron ore fines (sinter feed and pellet feed) has also increased the importance of the agglomeration processes, in particular the pelletizing, which has as main characteristic to produce high quality pellets with excellent mechanical resistance, besides being a less polluting process than the sintering. Currently, Brazilian mines exploit mainly hematite deposits (hematite and / or itabirite ores). Although the country has no tradition in exploiting magnetite minerals, there is a growing interest trend in magnetite occurrences, although it might be necessary to adequate mineral processing and pelletizing operating parameters when using such ore. This work is a result of an interaction between the company Metal Data S/A and the Siderurgy Group of the DEMa/PUC-Rio and describes the pelletizing process using magnetite iron ore from a Brazilian deposit in exploration stage, in order to evaluate its suitability for exploratory pellet production to be used as feedstock in the steel industry. The experimental procedures were divided into three steps - ore processing, pelletizing and reduction, aiming to define the ore treatment route and chemical, mechanical and metallurgical characteristics of the produced pellets. Three types of mixtures for pelletizing were analysed, involving eight different concentrates. The results indicated that the magnetite ore is likely to concentrate and capable of producing a pellet feed with adequate quality, using a processing route with typical unit operations. It was observed that this materal has a potential for the formation of green pellets in the laboratory pelletizing disc and, after burning operations, produced pellets that had particle size between 9.5 and 16.0 mm, compression strength from 126 to 339 kg / pellet, tumble index from 67.7 to 94.9%, porosity from 23.8 to 40.74%, degree of metallization from 30 to 75%, among others.
5
Rambiyana, RI. "Partial Roasting of a PGM Concentrate". Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/61329.
Texto completoResumen
PGM concentrates contain more than just the platinum group minerals. They also concentrate three minerals pyrrhotite (Fe1 xS), pentlandite ([Fe,Ni]9S8) and chalcopyrite (CuFeS2). In a sample of Merensky concentrate tested in this study, these minerals account for half the concentrate. During smelting and converting these sulphides collect the PGMs in matte. Smelting produces a matte, the composition of which converting adjusts by oxidizing sulphur to SO2 and iron to Fe2SiO4 (fayalite). The objective of roasting a PGM concentrate would be to alter the composition of a concentrate, at lower temperatures in a kiln before smelting, so that the matte formed contains less iron and sulphur, but, still, collects all of the PGMs, copper and nickel.
Roasting tests were conducted in a bench-scale rotary kiln on a sample of Merensky concentrate supplied by Lonmin. The kiln was purged with air to maintain high oxygen partial pressures (~0.21 atm O₂). Test temperatures from 350 °C to 700 °C and residence times from 2 to 30 minutes were explored. The roasted products were smelted in argon at 1500 °C to assess the effect of roasting on matte fall and the deportment of base metals.
Roasting for 20 minutes at 550 and 650 °C reduced the sulphur content in the concentrate by 60 and 70 %, respectively from 17.4% to ~5% sulphur. Iron was oxidized to an iron oxide. Fe3O4 (magnetite) predominated at lower temperatures (<500 °C); Fe2O3 (hematite) predominates at higher temperatures. Oxidation in each of these minerals occurred through a number of reactions. Some rates were faster than others. Under the conditions tested all of the iron in pyrrhotite oxidized to iron oxides, and most of the iron in chalcopyrite and pentlandite were oxidized. Copper and nickel remained as sulphides. The smelting of roasted products produced a lower matte fall, the iron in matte was less than 3 %, and matte collected all of the copper, but not all of the nickel. Nickel also partitioned to the slag, where it reported to the spinel phases. The matte formed (from concentrate roasted at 550 °C) in a number of discrete prills (rather than collecting in a single "button"), which might have been a consequence of high slag viscosities. For concentrate roasted at 650 °C discrete alloy prills and not matte prills were formed.Dissertation (MEng)--University of Pretoria, 2014.
Materials Science and Metallurgical Engineering
MEng
Unrestricted
6
Abrahamsson, Filip. "Leaching of Pyrrhotite from Nickel Concentrate". Thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-64934.
Texto completoResumen
Non-oxidative acid leaching of pyrrhotite from Kevitsa’s Ni-concentrate and methods to recover by-products, have been investigated. Selective dissolution of pyrrhotite (Fe1-xS, 0<x<0.25) can enrich the content of the valuable metals, such as Ni and Co, in the final concentrate and will reduce the amount of Fe and S sent to the smelters. The pyrometallurgical smelting of leached concentrate will thus give less formation of smelter by-products in form of slag and SO2. The leaching was studied through an experimental design plan with parameter settings of 38.8% to 57.8% H2SO4 and temperatures from 60 to 100°C. The best results were obtained in experiments carried out at the lower experimental range. Leaching at 60°C with an initial acid concentration of 38.8% H2SO4 was found sufficient to selectively dissolve most of the pyrrhotite; leaving an enriched solid residue. A QEMSCAN analysis of the solid residue confirmed that most of the pyrrhotite had been dissolved and showed that pentlandite was still the main Ni-mineral. Chemical assays showed that more than 95% of the Ni, Co, and Cu remained in the final residue. The utilized leaching process generates by-products, in the form of large quantities of Fe2+ in solution and gaseous H2S. To recover Fe2+, crystallization of iron(ii) sulfate (FeSO4∙nH2O) from leach solution through cooling have been studied. The crystallized crystals were further dehydrated into the monohydrate (FeSO4∙H2O) through a strong sulfuric acid treatment (80%H2SO4). XRD analysis confirmed that FeSO4∙H2O was the main phase in the final crystals, and a chemical analysis showed a Fe content of about 30%, 1.5% Mg, 0.4% Ca, and 0.2% Ni. The possibility to leach the concentrate by circulating the acidic solution from the crystallization stage has been tested. The recirculation of the solution showed no negative effects, as the recoveries of elements and chemical assays of the final solid residue were found to be similar to the obtained assay when the concentrate was leached in a fresh solution.Icke-oxidativ syralakning av magnetkis från Kevitsas Ni-koncentrat har studerats samt metoder för tillvaratagande av biprodukter. Genom en selektiv upplösning av magnetkis (Fe1-xS, 0<x<0.25) kan värdefulla metaller som Ni och Co anrikas i det slutliga koncentratet. Samtidigt som mängden Fe och S som skickas till smältverken minskar, vilket också innebär att mindre biprodukter i form av slagg och SO2 erhålls vid den pyrometallurgiska smältningen av Ni-koncentratet. En experimentell design plan genomfördes för att studera lakningen där syrakoncentrationen varierades från 38.8% till 57.8%H2SO4 och temperatur från 60 till 100°C. Bäst resultat erhölls vid de lägre parameterinställningarna. Lakning vid 60°C med en initial syrakoncentration på 38.8%H2SO4 visade sig vara tillräcklig för att selektivt lösa upp merparten av all magnetkis och lämna kvar en anrikad produkt. Via QUEMSCAN bekräftades att merparten av all magnetkis hade löst upp sig och att huvudsakligt Ni-mineral fortfarande var pentlandit. Kemiska analyser visade att mer än 95% av Ni, Co och Cu stannade kvar i fasta godset. Den tillämpade lakningsmetoden genererar biprodukter i form av stora mängder Fe2+ i lösning och H2S i gasform. För att tillvarata Fe2+ har kristallisering av laklösning som järn(ii) sulfat (FeSO4∙nH2O) studerats genom kylning. De kristalliserade kristallerna avvattnades till monohydrat, FeSO∙1H2O, genom avvattning i stark svavelsyra (80%H2SO4). XRD bekräftade FeSO∙1H2O som huvudfas i slutliga kristallerna och kemisk analys visade på ca 30%Fe med huvudsakliga orenheter i form av 1.5% Mg, 0.4%Ca och 0.2% Ni. Möjligheten till att laka i återcirkulerad lösning efter kristallisering har undersökts. Lakning i återcirkulerad lösning visade inga negativa effekter då liknande halter och utbyten erhölls till det fasta godset.
7
Verdú, Piqué Marçal. "Postformula feeding strategies to reduce concentrate consumption and improve feed efficiency in bulls fed high-concentrate diets". Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/377478.
Texto completoResumen
Als països mediterranis la majoria de bestiar d’engreix s’alimenta amb dietes riques en concentrat amb una ràtio de pinso i palla de 90:10, ambdós ad libitum, en menjadores separades. El cost del pinso (preu dels ingredients i el total de consum de pinso) representa el 70-80% dels costos de producció totals. El preu del pinso és variable any rere any. Així doncs, una reducció del consum total de concentrat, sense perdre creixement, podria millorar l’eficiència alimentària i conseqüentment la rendibilitat de l’explotació. La present tesi s’ha centrat en estratègies alimentàries que van més enllà de la fórmula nutricional per tal de reduir els costos de producció i millorar la rendibilitat independentment del preu del pinso. Per tant, les dues estratègies alimentàries postfórmula més apropiades per aplicar en el nostre (Catalunya) sistema intensiu d’engreix (vedells Frisons, dietes basades en blat de moro i granulat com a forma de presentació) van ser el disseny de menjadora de pinso i la forma física del pinso (qualitat del granulat). Un primer estudi avaluà l’efecte de dos dissenys de menjadora de pinso alternatius (una menjadora convencional amb menor capacitat de pinso i una menjadora uniboca amb proteccions laterals) sobre els paràmetres productius, la conducta animal i alimentària, el benestar i la salut ruminal. Ambdues menjadores foren bones estratègies per reduir el consum de pinso sense perjudicar el creixement, la salut ruminal i el benestar. Tanmateix, l’eficiència alimentària no millorà. A més, la conducta alimentària i la seva relació amb el disseny de menjadora, així com l’evolució amb el PV van ser analitzats en un segon estudi. Els animals alimentats amb menjadores col·lectives van exhibir un comportament més sincronitzat durant la fase de creixement (dels 130 als 320 kg PV) comparat amb els animals uniboca; mentre que aquests adoptaren una conducta més individualitzada durant la fase d’acabat (dels 320 als 440 kg PV) igual que els uniboca. El primer estudi va permetre detectar problemes d’adaptació a la menjadora uniboca, fet que originà un tercer estudi per avaluar l’efecte de l’estratègia d’adaptació (uniboca sense proteccions laterals durant els primers 4 d i una menjadora addicional amb menjar que gradualment es reduïa durant els primers 14 d) al disseny uniboca amb proteccions laterals sobre el creixement, la conducta alimentària i animal durant les primeres 6 setmanes després de l’arribada a l’engreix. L’estratègia d’adaptació a la menjadora uniboca va ser exitosa facilitant l’accés al menjar, fet que es va traduir en un increment del consum i del GMD durant la primera setmana i en un major PV al cap de 6 setmanes. Finalment, el quart estudi analitzà l’efecte de la forma de presentació del pinso sobre els paràmetres productius, la conducta alimentària, i la preferència en vedells en fase d’acabat; també s’estudià l’evolució de la qualitat del grànul des de granuladora fins a menjadora. Alimentar els animals amb grànuls de bona qualitat va tenir un impacte positiu en la rendibilitat de l’explotació degut a l’increment d’ingesta i creixement, i la reducció de malbaratament. Els animals mostraren preferència pels grànuls de bona qualitat. A més, va ser important preservar la qualitat del grànul (durabilitat i percentatge de fins) des de granuladora fins menjadora per observar millores en els rendiments productius. Concloent, totes les estratègies alimentàries postfórmula (disseny de menjadora, estratègia d’adaptació i forma de presentació del pinso) van tenir un lleu impacte sobre el creixement i la rendibilitat. Tanmateix, l’efecte additiu d’aquestes millores podria incrementar la competitivitat i disminuir la dependència als preus dels aliments en la producció intensiva d’engreix. També, aquesta tesi ha permès conscienciar a alguns productors en la implementació fàcil d’estratègies per reduir el consum de pinso.In Mediterranean countries most of intensive beef cattle are fed high-concentrate diets with concentrate to straw ratio 90 to 10, both ad libitum in separate feeders. The concentrate cost (price of ingredients and total concentrate consumption) represents around 70-80% of total production costs. The price of the concentrate has become largely variable year-by-year. Thus, a reduction of total concentrate consumption, without losing performance, may lead to an improvement in feed efficiency and thereby in fattening profitability. This current thesis has focused on feeding strategies beyond the nutritional formula that could improve production costs and profitability in intensive beef production independently of concentrate price. Hence, two different postformula feeding strategies were chosen as the more appropriate approaches to be studied in our (Catalonia) intensive beef production (Holstein bulls, corn grain-based high-concentrate diets, concentrate ad libitum in self-feeders, and pellet as main physical feed presentation); the concentrate feeder design and physical form of concentrate (pellet quality). A first study was conducted to evaluate the effect of two alternative concentrate feeder designs (a conventional feeder with less concentrate capacity and single-space feeder with lateral protections) on performance, eating and animal behavior, welfare, ruminal health, and carcass quality. Both alternative feeder designs were good strategies to reduce total concentrate consumption without impairing performance, rumen health, and animal welfare. However, feed efficiency was not improved. Furthermore, eating and drinking patterns and its relationship with feeder design, and its evolution with BW were analyzed in a second study. Animals fed on collective feeders exhibited an eating behavior more synchronized during the growing phase (from 130 to 320 kg of BW) compared with single-space feeder animals, whereas they adopted a more individualized behavior during the finishing phase (from 320 to 440 kg of BW) like single-space feeder animals. Data from the first study suggested that animals fed single-space feeder with lateral barriers had adaptation problems. Then, a third study was designed to evaluated the effect of the adaptation strategy (single-space feeder without lateral protections for first 4 d and additional feeder where feed offer was gradually reduced for first 14 d) to single-space feeder design with lateral protections on performance, eating pattern, and animal behavior for first 6 wk upon arrival at fattening. The adaptation strategy to the single-space feeder was successful facilitating feed access; fact that was translated in an increase of concentrate intake and ADG during the first week after fattening arrival, and resulting in a greater BW 6 wk later. Lastly, the fourth study analyzed the effect of physical form of concentrate on performance, eating pattern, and feed preference in finishing bulls, together with studying the evolution of physical pellet quality from pellet mill to the feeder. Feeding animals with good quality pellets had a positive economic impact on fattening profitability due to improve performance (increased intake and growth, and reduced feed wastage). The feed preference study demonstrated that animals showed a strong preference for good pellet quality. In addition, it was important to preserve parameters of pellet quality (durability and percentage of fines) from pellet mill to feeder to expect the beneficial effect of pellet quality (with good quality) on performance. In conclusion, all postformula feeding strategies proposed (concentrate feeder design, adaptation strategy to concentrate feeder design, and physical form of concentrate) had a small impact on performance and economic profitability. However, the additive effects of small benefits of these different feeding approaches could contribute to a more competitive and less dependent of feed prices intensive beef production. Moreover, this thesis has also raised awareness to producers in management strategies that improve efficiency and profitability easy to implement.
8
Fernandes, Laís Lucas. "Protocolos para a preparação de concentrados autólogos de trombócitos em aves". Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/154419.
Texto completoResumen
Submitted by Lais Lucas Fernandes (lais-f@hotmail.com) on 2018-07-02T03:45:59Z
No. of bitstreams: 1
BONECO DEFINITIVO CORRIGIDO com ficha.pdf: 3250792 bytes, checksum: c27c416f86a495d9eadf4074c1b1f411 (MD5)Approved for entry into archive by Maria Lucia Martins Frederico null (mlucia@fca.unesp.br) on 2018-07-02T17:41:54Z (GMT) No. of bitstreams: 1 fernandes_ll_me-botfca.pdf: 3250846 bytes, checksum: 59b007beb7ecad527250296a9d0d2348 (MD5)
Made available in DSpace on 2018-07-02T17:41:54Z (GMT). No. of bitstreams: 1 fernandes_ll_me-botfca.pdf: 3250846 bytes, checksum: 59b007beb7ecad527250296a9d0d2348 (MD5) Previous issue date: 2018-05-17
O estudo visou comparar e avaliar protocolos de produtos autógenos sanguíneos em aves, com base naqueles existentes para mamíferos. No Experimento 1 foram analisados dois protocolos para obtenção de plasma rico em trombócitos e leucócitos (L-PRT). Utilizaram-se 30 aves divididas em três Grupos equitativos: G1 - papagaios; G2 - tucanos-toco; G3 - galinhas domésticas. No protocolo 1, a primeira centrifugação foi a 220 gravidade (g) durante 10 minutos e a segunda a 660 g por 10 minutos. Após a segunda centrifugação, foi descartado 2/3 do sobrenadante, permanecendo apenas o L-PRT. No protocolo 2, a primeira centrifugação foi a 120 g durante 5 minutos e a segunda a 240 g por 5 minutos. Concluiu-se que houve diferenças na concentração de trombócitos entre as espécies, porém independente do protocolo a maior concentração foi nas galinhas, e entre os Protocolos o 2 foi o mais efetivo. No Experimento 2 foram produzidas e avaliadas histologicamente membranas de fibrina rica em trombócitos e leucócitos (L-TRF). Empregaram-se 40 aves divididas em quatro grupos equitativos: G1 – araras, G2 - galinhas domésticas, G3 – papagaios, G4 - tucanos-toco. Para cada ave foi coletado 0,5 ml de sangue, que foi depositado em tubo de vidro sem anticoagulante e centrifugado a 3000 rpm por 10 minutos. Membranas de L-TRF obtidas pela compressão dos cóagulos com gaze foram processadas para análise histológica. Foi possível concluir que é possível produzir membranas de L-TRF nas espécies de aves estudadas, porém histologicamente as proporções dos elementos avaliados foram similares apenas nas galinhas domésticas e papagaios.
This study aimed to compare and evaluate protocols of autogenous blood products in birds, based on protocols developed for mammals. In Experiment 1, two protocols were evaluated for obtaining Leukocyte- and Thrombocyte-Rich Plasma (L-TRP). Thirty birds were divided into three equally sized groups: G1 - parrots; G2 - toco toucans; G3 - domestic chickens. In Protocol 1 the first centrifugation was at 220 gravity (g) for 10 minutes and the second one at 660 g for 10 minutes. After the second centrifugation, 2/3 of the supernatant was discarded, leaving only the L-TRP. In protocol 2, the first centrifugation was at 120 g for 5 minutes and the second one at 240 g for 5 minutes. In conclusion, there were differences in thrombocyte concentration among the species, but independently of the protocol, the highest concentration was in chickens. Between the protocols, Protocol 2 was the most effective. In Experiment 2, Leukocyte- and Thrombocyte-Rich Fibrin (L-TRF) membranes were developed and assessed histologically. Forty birds were divided into four equally sized groups: G1 – macaws, G2 - domestic chickens, G3 – parrots, G4 - toco toucans. A total of 0.5 mL of blood was collected from each bird, which was put into glass tube without anticoagulant and centrifuged at 3000 rpm for 10 minutes. L-TRF membranes produced after compression of the clot were processed for histological analysis. In conclusion, L-TRF membranes can be produced in the evaluated avian species, but the ratio of the elements evaluated histologically were similar only in domesticated chickens and parrots.
9
Fagundes, Marco Henrique Ramos. "Efeito do sistema de fornecimento de alimentos e processamento do concentrado sobre a digestibilidade da dieta e resposta glicêmica plasmática, em eqüinos". Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/10/10135/tde-10042007-162440/.
Texto completoResumen
Foram utilizados quatro éguas, da raça brasileiro de hipismo, com idade aproximada de 24 meses, com peso médio de 500 Kg, em um delineamento experimental Quadrado Latino balanceado 4X4, com arranjo fatorial 2X2 dos tratamentos e medidas repetidas no tempo, sendo o primeiro fator dois concentrados, um somente peletizado (CT) e o outro peletizado com pré-extrusão do ingrediente milho (CM), e o segundo fator é constituído pela diferença na ordem de fornecimento do concentrado e do volumoso onde um o concentrado é fornecido às 7:00h e às 19:00h e o volumoso às 9:00h e às 21:00h (C7V9); e o outro o inverso (V7C9). Não houve efeito dos tratamentos na aceitabilidade, na digestibilidade aparente total da matéria seca (51,2; 54,5; 53,4; 58,2%) da matéria orgânica (54,1; 57,5; 56,1; 60,7%), do amido (98,2; 98,3; 98,2; 98,2%), da proteína bruta (65,6; 70,3; 68,9; 72,6%), da fibra em detergente neutro (42,5; 44,6; 42,9; 49,3%) e da fibra em detergente ácido (34,8; 37,3; 37,0; 42,3%), porém noto-se uma tendência de melhora para os fatores V7C9 e CM. A resposta glicêmica plasmática foi analisada pela área abaixo da curva de glicose com valores obtidos para CTC7V9 de 493,7; CTV7C9, 407,6; CMC7V9, 430,7 e CMV7C9, 387,8, porém não houve efeito do fator concentrado, já o fator sistema de alimentação sofreu diferença estatística com aumento para o sistema C7V9, o que demonstra uma curva menos acentuada para V7C9, demonstrando uma absorção mais uniforme da glicose.Four mares had been used, of the race Brazilian of jumping, with approach age of 24 months, average weight of 500 kg, in balanced Latin Squared experimental delineation 4X4, with factorial arrangement 2X2 of the treatments and measures repeated in the time, being the first factor two concentrates, one only pelletized (CT) and the other pelletized with daily pay-drawing of the ingredient maize (CM), and as the factor is constituted by the difference in the order feeding the concentrate and the voluminous one where one the concentrate is feeded 7:00h and to 19:00h and voluminous 9:00h and 21:00h (C7V9); e the other the inverse one (V7C9). It did not have effect of the treatments in acceptability, in the total apparent digestibilidade of dry substance (51,2; 54,5; 53,4; 58,2%) of organic substance (54,1; 57,5; 56,1; 60,7%), of starch (98,2; 98,3; 98,2; 98,2%), of rude protein (65,6; 70,3; 68,9; 72,6%), of the fiber in neutral detergent (42,5; 44,6; 42,9; 49,3%) and of the fiber in acid detergent (34,8; 37,3; 37,0; 42,3%), however I notice a trend of improvement for factors V7C9 and cm. The plasmatic glucose it was analyzed by the area below of the glucose curve with values gotten for CTC7V9 of 493,7; CTV7C9, 407,6; CMC7V9, 430,7 and CMV7C9, 387,8, however did not have effect of the concentrated factor, already the factor feeding system suffered to difference statistics with increase for system C7V9, what it less demonstrates an accented curve for V7C9, demonstrating an absorption more uniform of the glucose.
10
Delgado, Guillermo Guadalupe. "Treatment of RO concentrate using VSEP technology". To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Texto completoLibros sobre el tema "Concentrate"
1
As/Is, ed. Concentrate! Philadelphia, PA: As/Is group poetry blog, 2007.
Buscar texto completo
2
Spencer, Maureen. Evidence concentrate. New York: Oxford University Press, 2009.
Buscar texto completo
3
Spencer, John, 1942 June 2-, ed. Evidence concentrate. Oxon: Oxford University Press, 2010.
Buscar texto completo
4
Spencer, Maureen. Evidence concentrate. Oxon: Oxford University Press, 2010.
Buscar texto completo
5
Spencer, Maureen. Evidence concentrate. Oxon: Oxford University Press, 2010.
Buscar texto completo
6
Marson, James. Business law concentrate. New York: Oxford University Press, 2010.
Buscar texto completo
7
Ladewig, Bradley y Benjamin Asquith. Desalination Concentrate Management. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24852-8.
Texto completo
8
Huxley-Binns, Rebecca. Criminal law concentrate. Oxford: Oxford University Press, 2009.
Buscar texto completo
9
Lewis, David. Employment law concentrate. Oxford: Oxford University Press, 2009.
Buscar texto completo
10
Land law concentrate. 2a ed. New York: Oxford University Press, 2011.
Buscar texto completoCapítulos de libros sobre el tema "Concentrate"
1
Bährle-Rapp, Marina. "concentrate". En Springer Lexikon Kosmetik und Körperpflege, 127. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_2375.
Texto completo
2
Bährle-Rapp, Marina. "substance concentrate". En Springer Lexikon Kosmetik und Körperpflege, 536. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_10160.
Texto completo
3
Gooch, Jan W. "Color Concentrate". En Encyclopedic Dictionary of Polymers, 155–56. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2629.
Texto completo
4
Tadros, Tharwat. "Emulsion Concentrate". En Encyclopedia of Colloid and Interface Science, 365. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-20665-8_81.
Texto completo
5
Weik, Martin H. "toner concentrate". En Computer Science and Communications Dictionary, 1796. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_19733.
Texto completo
6
Gooch, Jan W. "Multifunctional Concentrate". En Encyclopedic Dictionary of Polymers, 475. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7734.
Texto completo
7
Dunford, James C., Louis A. Somma, David Serrano, C. Roxanne Rutledge, John L. Capinera, Guy Smagghe, Eli Shaaya et al. "Emulsifiable Concentrate". En Encyclopedia of Entomology, 1309. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_3554.
Texto completo
8
"Concentrate". En This Is Not Who We Are, 21–34. Cambridge University Press, 2022. http://dx.doi.org/10.1017/9781009203418.003.
Texto completo
9
Yonar, Taner. "A New Approach for Membrane Process Concentrate Management: Electrodialysis Bipolar Membrane Systems-A Short Communication". En Electrodialysis. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.93985.
Texto completoResumen
In most cases traditional and advanced treatment technologies transfers and concentrates the pollutants from one phase to other phase. However, nowadays, these concentrated flows containing heavy pollution are rapidly moving away from being manageable. In particular, membrane concentrate flows await immediate solutions to this issue. Electrodialysis Bipolar Membrane (EDBM) Processes are becoming a serious and potential solution technique for similar concentrate streams. In this chapter, principles and potentials of EDBM processes for the recycling or recovery of membrane concentrates are discussed.
10
"placer concentrate". En Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 1009. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_162195.
Texto completoActas de conferencias sobre el tema "Concentrate"
1
Padget, Julian y John Fitch. "Closurize and concentrate". En the 12th ACM SIGACT-SIGPLAN symposium. New York, New York, USA: ACM Press, 1985. http://dx.doi.org/10.1145/318593.318656.
Texto completo
2
Mariani, G., R. Ghirardini, P. Verani, F. Mandelli, G. B. Rossi, M. P. Mannucci y S. Butto. "ANTI-HIV AFTER HEATED CLOTTING FACTOR CONCENTRATES IN HEMOPHILIACS". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643971.
Texto completoResumen
In Italy, heated concentrates became the only source of hemophilia therapy since July 1985, when a government act enforced their use instead of nonheated concentrates. Since then 63 anti-HIV seronegative hemophiliacs treated with heated concentrates were followed-up prospectively, focusing on the development of anti-HIV. Anti-HIV (documented by persistent positivity for ELISA and WB) occurred in 6 patients who had no other risk factor for HIV infection. For 3, anti-HIV was first found in Sept., Oct. or Nov. 1985 i.e. within 4 months of the last infusion of unheated concentrates (July 1985). For another patient, anti-HIV was found in Sept. 1986, but no other sample was available after the last negative test (Nov. 1985). For these 4 cases, therefore, we cannot exclude that seroconversions are due to nonheated concentrates used until July 1985. For 2 patients, however, anti-HIV occurred in July 1986, i.e. 11 months after change to heated concentrates. For both a hemophilia A patient (treated exclusively with a concentrate dry-heated for 72 hr at 68°C) and a hemophilia B patient (treated with both a steam-heated concentrate and a concentrate dry-heated for 72 hr at 68°C) the last seronegativities were found in March 1986, i.e. 7.0 and 7.5 months after commencing the use of heated concentrates or 3.5 and 4.0 months before the first seropositivity. The overwhelming majority of heated concentrates were prepared from non-donor-screened plasma. In conclusion, two anti-HIV occurred in previously seronegative patients treated exclusively with heated concentrates. Intensity and duration of concentrate exposure to heating were greater than those for the commercial dry-heated concentrate (60°C for 30 hours) that caused two reported seroconversions.
3
Chabbat, J., L. Pejaudier, V. Kichenin-martin, S. Hampikian-Le Nin y M. Steinbuch. "PROPERTIES OF A F VII CONCENTRATE." En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643282.
Texto completoResumen
A concentrate of factor VII obtained by adsorption onto an inorganic adsorbent using a by-product of routine fractionation as starting material This fraction contains only small amounts of the other constituents of the prothrombin complex ( PC ) but it is enriched in proteins C and S. It contains much less VIII CAg than the usual even activated PC concentrates. The amounts of isoagglutinins anti-A and B have also been checked. The concentrate of partially versus completely activated factor VII ( by factor Xlla ) has been submitted to animal experiences including those effected on hemophilic dogs. The concentrate and highly purified factor VII prepared from it were checked on a serie of chromogenic substrates and inhibitors of proteolytic enzymes of plasmatic and other origin. The results obtained are compared with those given by the two most commonly used activated PCCs. The correlation between active F VII and by-passing activity has been studied. This concentrate might thus be indicated for the treatment of hemophilia A-patients with inhibitors.
4
N, BUSTAMANTE-PENAGOS y NIÑO Y. "COPPER CONCENTRATE AND GRAVEL BEDS". En 38th IAHR World Congress. The International Association for Hydro-Environment Engineering and Research (IAHR), 2019. http://dx.doi.org/10.3850/38wc092019-0428.
Texto completo
5
Treanor, Patrick y Val S. Frenkel. "Desalination Concentrate: Bay vs. Ocean". En World Environmental and Water Resources Congress 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41036(342)555.
Texto completo
6
Tansel, Berrin. "Novel Technologies for Concentrate Management". En World Environmental and Water Resources Congress 2019. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482360.022.
Texto completo
7
Aleksei, Kritskii, Karimov Kirill y Naboichenko Stanislav. "Pressure leaching of chalcopyrite concentrate". En PROCEEDINGS OF THE INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2017): Metallurgy and Advanced Material Technology for Sustainable Development. Author(s), 2018. http://dx.doi.org/10.1063/1.5038330.
Texto completo
8
Wittner, Marc Oliver, Heike Petra Karbstein y Volker Gaukel. "Spray drying of high viscous food concentrates: Investigations on the applicability of an Air-Core-Liquid-Ring (ACLR) nozzle for liquid atomization." En 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7289.
Texto completoResumen
Spray drying is widely used for powder production from liquid concentrates. Often low input temperatures are desired, as many materials, like proteins, are sensitive to heat. However, this demand leads to increased concentrate viscosities. Commonly used pressure swirl atomizers are limited concerning maximum processible viscosity. In this study, a so called Air-Core-Liquid-Ring Atomizer is used for pilot scale spray drying of whey protein concentrate (WPC80) at 40 °C and hence a viscosity of 0.09 Pa s. The produced powder was compared to an industrially produced reference. As a result, no significant differences in particle size distribution and particle morphology were observed. Keywords: spray drying, atomization, ACLR, high viscous feeds, whey protein concentrate.
9
Grant, Philip. "Homogenizing Concentrate in a Juice Evaporator". En ASME 1990 Citrus Engineering Conference. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/cec1990-3604.
Texto completoResumen
A process used to concentrate orange juice and other citrus juices by using an APV Gaulin homogenizer within the T.A.S.T.E. Evaporator. The purpose of this process is to reduce viscosity, eliminate defects, reduce bottom pulp, increase yields, and provide for a smoother operation of the evaporator, subsequent to homogenization. This process, equipment and benefits are the basis of U.S. Patent #4,886,574 issued September 5, 1989, and application #339,171, pending. Paper published with permission.
10
Adi, Mohamad Nadim y David Roberts. "Can you help me concentrate room?" En 2010 IEEE Virtual Reality Conference (VR). IEEE, 2010. http://dx.doi.org/10.1109/vr.2010.5444801.
Texto completoInformes sobre el tema "Concentrate"
1
Rosencrance, S. W. Concentrate Interaction Testing. Office of Scientific and Technical Information (OSTI), junio de 2002. http://dx.doi.org/10.2172/829690.
Texto completo
2
Hoeksma, Paul, Heike Schmitt, Fridtjof de Buisonjé, Hassan Pishgar Komleh y Phillip Ehlert. Composition of mineral concentrates : Results of monitoring installations of the Pilot Mineral Concentrate in 2019-2020. Wageningen: Wageningen Livestock Research, 2021. http://dx.doi.org/10.18174/541577.
Texto completo
3
Lumetta, G. J., L. A. Bray, D. E. Kurath, J. R. Morrey, J. L. Swanson y D. W. Wester. Exploratory study of complexant concentrate waste processing. Office of Scientific and Technical Information (OSTI), febrero de 1993. http://dx.doi.org/10.2172/10136918.
Texto completo
4
Lumetta, G. J., L. A. Bray, D. E. Kurath, J. R. Morrey, J. L. Swanson y D. W. Wester. Exploratory study of complexant concentrate waste processing. Office of Scientific and Technical Information (OSTI), febrero de 1993. http://dx.doi.org/10.2172/6367464.
Texto completo
5
lokken, R. O., R. D. Scheele, D. M. Strachan y A. P. Toste. Complex concentrate pretreatment FY 1986 progress report. Office of Scientific and Technical Information (OSTI), septiembre de 1986. http://dx.doi.org/10.2172/5628561.
Texto completo
6
Ben Ghedalia, Daniel y P. J. Van Soest. The Conversion of Straw into a Concentrate-Like Feed. United States Department of Agriculture, febrero de 1985. http://dx.doi.org/10.32747/1985.7594417.bard.
Texto completo
7
Peters, T. y M. Williams. RESULTS OF ANALYSIS OF NGS CONCENTRATE DRUM SAMPLES [Next Generation Solvent]. Office of Scientific and Technical Information (OSTI), septiembre de 2013. http://dx.doi.org/10.2172/1093873.
Texto completo
8
Hammer, Carrie, Howard Tyler, James D. Quigley y L. Ribeiro. Characterization of a Colostrum Replacer Containing IgG Concentrate and Growth Factors. Ames (Iowa): Iowa State University, enero de 2004. http://dx.doi.org/10.31274/ans_air-180814-142.
Texto completo
9
Jensen, G. F. y J. D. Miller. Refining of fossil resin flotation concentrate from western coal. Final report. Office of Scientific and Technical Information (OSTI), febrero de 1995. http://dx.doi.org/10.2172/259415.
Texto completo
10
Wilmarth, W. R. Characterization of Samples from the Effluent Treatment Facility Evaporator Waste Concentrate Tank. Office of Scientific and Technical Information (OSTI), enero de 1998. http://dx.doi.org/10.2172/637815.
Texto completo