Consulta: subjectFacets:"Absorption"
Registros recuperados: 42
Data/hora: 06/06/2024 02:32:05

Cultivo hidropónico y manejo nutrimental de la producción anual de Antirrhinum majus L. en condiciones de invernadero.
Provedor de dados: 32
Autores: Rojas Velázquez, Angel Natanael.
La información y tecnologías para el cultivo hidropónico de  perrito (Antirrhinum majus L.) en invernadero es limitada y requiere mayor conocimiento e investigación para el adecuado manejo del cultivo. En el presente estudio se utilizó un material de verano (Grupo IV) serie Potomac cv. Rose, para determinar los efectos del potencial osmótico (PO) en la solución nutritiva (-0.036, -0.054, -0.072, -0.090 y  -0.108 MPa) en el contenido de biomasa y calidad comercial, análisis de crecimiento, absorción y extracción nutrimental, durante en cultivos de invierno y verano. En general las diferentes variables evaluadas, biomasa aérea, vida de florero y días a cosecha se vieron afectados por los tratamientos de PO y por las estaciones de crecimiento. La...
Palavras-chave: Análisis de crecimiento; Absorción; Extracción; Hidroponía; Invernaderos; Growth analysis; Absorption; Extraction; Hydroponic; Greenhouse; Doctorado; Fruticultura.
Ano: 2010
URL: http://hdl.handle.net/10521/237

Cultivo hidropónico y manejo nutrimental de la producción anual de Antirrhinum majus L. en condiciones de invernadero.
Provedor de dados: 32
Autores: Rojas Velázquez, Angel Natanael.
La información y tecnologías para el cultivo hidropónico de  perrito (Antirrhinum majus L.) en invernadero es limitada y requiere mayor conocimiento e investigación para el adecuado manejo del cultivo. En el presente estudio se utilizó un material de verano (Grupo IV) serie Potomac cv. Rose, para determinar los efectos del potencial osmótico (PO) en la solución nutritiva (-0.036, -0.054, -0.072, -0.090 y  -0.108 MPa) en el contenido de biomasa y calidad comercial, análisis de crecimiento, absorción y extracción nutrimental, durante en cultivos de invierno y verano. En general las diferentes variables evaluadas, biomasa aérea, vida de florero y días a cosecha se vieron afectados por los tratamientos de PO y por las estaciones de crecimiento. La...
Palavras-chave: Análisis de crecimiento; Absorción; Extracción; Hidroponía; Invernaderos; Growth analysis; Absorption; Extraction; Hydroponic; Greenhouse; Doctorado; Fruticultura.
Ano: 2010
URL: http://hdl.handle.net/10521/237

White mold detection in common beans through leaf reflectance spectroscopy
Provedor de dados: 70
Autores: Machado,Marley L.; Pinto,Francisco de A. C.; Paula Junior,Trazilbo J. de; Queiroz,Daniel M. de; Cerqueira,Ozires de A. T.
ABSTRACT This study aimed to identify wavelengths based on leaf reflectance (400-1050 nm) to estimate white mold severity in common beans at different seasons. Two experiments were carried out, one during fall and another in winter. Partial Least Squares (PLS) regression was used to establish a set of wavelengths that better estimates the disease severity at a specific date. Therefore, observations were previously divided in two sub-groups. The first one (calibration) was used for model building and the second subgroup for model testing. Error measurements and correlation between measured and predicted values of disease severity index were employed to provide the best wavelengths in both seasons. The average indexes of each experiment were of 5.8% and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sclerotinia sclerotiorum; PLS regression; Pigments; Spectrum; Absorption.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000601117

Региональный алгоритм расчёта концентрации хлорофилла а в Чёрном море по спутниковым данным SeaWiFS.
Provedor de dados: 13
Autores: Суслин, В. В.; Чурилова, Т. Я.; Сосик, Х. М.
Анализ стандартных спутниковых продуктов SeaWiFS второго уровня, характеризующих выходящее из-под поверхности воды излучение nLw(λ) в спектральных каналах (СК) λ = 490, 510 и 555 нм, показал, что их комбинация в виде индексов, определяемых как отношения I510 = nLw(555)/nLw(510) и I510 = nLw(510)/nLw(490), обладает в Чёрном море существенной нелинейностью в течение года. Эта особенность легла в основу  метода разделения вкладов пигментов фитопланктона aph(λ) и суммы детрита и жёлтого вещества aCDM(λ) в поглощение света морской водой, и, как следствие, предложен региональный алгоритм определения концентрации хлорофилла а (Ca). Показано, что существуют, как минимум, два типа решений, соответствующих различному характеру поглощения света черноморской водой в...
Tipo: Journal Contribution
Palavras-chave: Видимый диапазон; Дистанционное зондирование; Поглощение; Хлорофилл а; Окрашенное растворённое органическое вещество; Цианобактерии; SeaWiFS; Региональный алгоритм; Чёрное море; Visible domain; Remote sensing; Absorption; Chlorophyll a; Colored dissolved organic matter; Cyanobacteria; Regional algorithm; Black Sea; Видимий діапазон; Дистанційне зондування; Поглинання; Хлорофіл а; Забарвлена розчинена органічна речовина; Ціанобактерії; Регіональний алгоритм; Чорне море.
Ano: 2008
URL: http://repository.ibss.org.ua/dspace/handle/99011/808

Elementos minerais em forrageiras: formas químicas, distribuição e biodisponibilidade.
Provedor de dados: 14
Autores: NICODEMO, M. L. F.; LAURA, V. A.
A deficiência de absorção do mineral da dieta é um elemento importante nas estimativas de exigências nutricionais. A eficiência de absorção de um determinado mineral pode variar com fatores ligados ao animal (características genéticas, estádio fisiológico e taxa de crescimento e outros) e pela capacidade da dieta em disponibilizar o nutriente em questão (relacionada principalmente com a forma química e associações estruturais na planta). Outros nutrientes (proteínas, energia, demais minerais) e faores antinutricionais (Glicosídeos cianogênicos, oxalato), dependendo das quantidades presentes, podem interagir com o mineral e alterar sua eficiência de absorção e sua retenção pelo animal. Alguns desses aspectos serão abordados nesta revisão.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Bovino de corte; Minerais; Feed crops.; Absorção de Nutrientes; Nutrição Animal; Planta Forrageira.; Absorption; Animal nutrition; Beef cattle; Minerals.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/325193

II Curso sobre a biologia do solo na agricultura.
Provedor de dados: 14
Autores: ASSIS, R. L. de; SOUTO, S. M.; DUQUE, F. F.; ALMEIDA, D. L. de; MUELLER, K. E. K.
Nitogênio. Fixação de nitrogênio atmosférico na simbiose Rhizobium- leguminosas. Nodulação das leguminosas. Fatores do solo. Fatores climáticos. Fixação de nitrogênio em gramíneas. Microrganismos do solo e aproveitamento de fósforo pelas plantas. O papel das micorrizas. Outos microrganismos. Matéria orgânica do solo: Dinâmica e importância na conservação do solo e produtividade agrícola. Classificação das substâncias no solo. Microorganismos e transformação da matéria orgânica no solo. A biomassa microbiana do solo. Adição de matéria orgânica ao solo: Adubação orgânica/verde. Sistemas agrícolas adequadas a utilização da fixação biológicas no nitrogênio. Rotação planejada de culturas. Consorciação de culturas. Cultivo em faixas. Sistemas agrosilvopastorais....
Tipo: Documentos (INFOTECA-E)
Palavras-chave: P; Fixação biológica de nitrogênio; FBN; Biological nitrogen fixation; BNF.; Absorção; Adubação Verde; Biologia do Solo; Cana de Açúcar; Fertilidade do Solo; Fósforo; Gramínea; Gesso; Leguminosa Forrageira; Micorriza Vesicular Arbuscular; Palha.; Absorption; Gypsum; Grasses; Forage legumes; Green manures; Phosphorus; Soil biology; Soil fertility; Sugarcane; Vesicular arbuscular mycorrhizae.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/623722

Reciclagem de N por leguminosas cultivadas durante a seca nos cerrados.
Provedor de dados: 14
Autores: BURLE, M. L.; PERES, J. R. R.; SUHET, A. R.; RESCK, D. V. S.; PEREIRA, J.; BOWEN, W. T.
bitstream/item/102180/1/pesq-46.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Fixacao biologica; Potencial; Cultivo; Epoca seca; Feijao Bravo do Ceara; Cultivar; Canavalia brasiliensis; Mucuna aterrima; CPAC 1230; Cultivation.; Absorção; Cajanus Cajan; Cerrado; Guandu; Leguminosa; Nitrogênio; Mucuna Preta; Stylosanthes Guianensis.; Absorption; Tephrosia candida; Dry season; Legumes; Nitrogen fixation; Varieties.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549385

Dinamica de nutrientes em solos arenosos no Pantanal Mato-Grossense.
Provedor de dados: 14
Autores: CUNHA, N. G. da.
Nos solos arenosos das sub-regioes da Nhecolandia e dos Paiaguas, no Pantanal Mato-Grossense, tem sido desenvolvidas pesquisas que objetivam determinar as limitacoes existentes ao estabelecimento e crescimento de forrageiras. Neste aspecto sao revisados os resultados dos experimentos realizados referentes a estabilidade dos nutrientes em cordilheira, causas da variacao estacional da producao das forrageiras, variacao da umidade nos solos de cordilheira e caronal, niveis e limitacoes de nutrientes no meio, uso da calagem nos solos mais pobres, produrando-se discutir as informacoes basicas obtidas e delas avaliar o conjunto de fatores que interfere na producao de forrageiras. A analise dos resultados indica que o sistema solo-agua-planta em seu dinamismo...
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Forrageira; Fertility; Nutrient; Production.; Absorção; Água; Fertilidade; Nutriente; Produção; Solo Arenoso.; Solo; Brazil; Pantanal; Absorption; Forage; Soil; Sandy soils; Water.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787717

Efeitos da inoculação de micorriza na produção de matéria orgânica de leguminosas arboreas e arbustivas.
Provedor de dados: 14
Autores: BLUM, E.
bitstream/item/57928/1/Doc40-p245-260.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Árvore leguminosa; Produção de matéria orgânica; Absorção de nitrogênio; Absorção de fósforo; Capitão Poço; Pará; Brasil.; Inoculação; Micorriza.; Amazonia; Absorption; Inoculation methods; Legumes; Mycorrhizae; Nitrogen; Organic matter; Phosphorus; Trees.; Soil.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/394731

Impact on non target organisms of anti-marine wood-borer treatments. Evaluation of stress imposed by treatments on organisms from test sites
Provedor de dados: 5
Autores: Goulletquer, Philippe; Geairon, Philippe; Faury, Nicole; Razet, Daniel; Soletchnik, Patrick; Gras, Paul; Adessi, L.
In European waters, significant economic damages to wooden structures are caused by bivalves molluscs and crustaceans. Treatments like copper-chrome-arsenic mixtures (CCA) were designed to prevent settlement of these wood borer species. However, limited and conflicting evidence regarding the toxicity to non-target organisms are available in the literature. This report aims to provide insights regarding the CCA leachates' toxicity to an important aquaculture species, the blue mussel Mytilus edulis for which much information on normal and stressed physiology is available for purposes of comparisons. The mussels are usually considered as a particularly suitable species for biological monitoring (Smaal and Widdows, 1994). To address the CCA leachate issue, two...
Tipo: Text
Palavras-chave: Bivalvia; Mussel; Mytilus edulis; Copper-chrome-arsenic (CCA); Treatment; Feeding; Absorption.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00043/15437/12788.pdf

Dietary neutral lipid level and source in marine fish larvae: Effects on digestive physiology and food intake
Provedor de dados: 5
Autores: Morais, Sofia; Conceicao, L; Ronnestad, I; Koven, W; Cahu, Chantal; Zambonino, Jose-luis; Dinis, M.
A growth depressing effect of high dietary neutral lipid levels in marine fish larvae has been reported. This may be a result of a decrease in the efficiency or activity of digestive enzymes, a reduction in absorption efficiency and/or a decrease in food intake. The present work reviews recent studies carried out on commercially valuable species (Atlantic herring, Senegalese sole, European seabass and gilthead seabream) that investigated the effects of neutral lipid level and lipid source (fatty acid composition) on some of these key factors influencing larval growth. The results seem to collectively indicate that lipid transport from the enterocytes into the body may be more problematic in larval stages dealing with high neutral lipid diets than lipolytic...
Tipo: Text
Palavras-chave: Ingestion; Lipid droplets; Digestion; Absorption; Fatty acid composition; Lipid quantity.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3029.pdf

High-Resolution Geoacoustic Characterization of the Seafloor Using a Subbottom Profiler in the Gulf of Lion
Provedor de dados: 5
Autores: Theuillon, Gwladys; Stephan, Yann; Pacault, Anne.
Subbottom profilers are commonly used to explore the first sediment layers below the seafloor. Recent narrowbeam profilers achieve improved performances in terms of signal-to-noise ratio (SNR) and resolution. Thus, the potential of these systems for near real-time geoacoustic characterization of sediments is high and is worth being specifically explored. This paper presents several methods to estimate geoacoustic parameters such as the absorption, the reflectivity, and the impedance contrast. These procedures are tested against real data collected with the SBP 120 subbottom profiler during the CALIbration MEthodology for Recognition of the Ocean bottom (CALIMERO) experiment. It is shown that the absorption and impedance contrast estimates are fully...
Tipo: Text
Palavras-chave: Subbottom profiler; Spectral ratio; Impedance contrast; Geoacoustic inversion; Eckart's model; Absorption.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-6159.pdf

Impact on non target organisms of anti-marine wood-borer treatments. Evaluation of stress imposed by treatments on organisms form test sites - Final Report
Provedor de dados: 5
Autores: Goulletquer, Philippe; Geairon, Philippe; Faury, Nicole; Razet, Daniel; Soletchnik, Patrick; Adessi, L.; Gras, Paul.
Experiments were canied out to assess the copper-chrome-arsenic (CCA) trealment effeets on the Blue mussel Mytilus edulis physiology. Experimental design included two complementary approaches: 1) scope for growth esrimates based upon the energy balance between respiration energy loss and energy gained from feeding processes. 2) a biological early waming system for valve behavior monitoring under CCA exposures. Various temperature range (seasonal effeet). physiological status (mature &amp; immature mussels) as weil as CCA concentrations (from 0 to 48kg/m3) and rime exposure were tested. Significant monality rates for the experimental mussel populations were recorded in alI experimental modalities but the 2kg/m3 CCA treatment concentration. Overall results...
Tipo: Text
Palavras-chave: Bivalvia; Mussel; Mytilus edulis; Copper-Chrome-Arsenic (CCA); Treatment; Feeding; Absorption.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00077/18795/16372.pdf

Description of the unusual digestive tract of   Platax orbicularis   and the potential impact of   Tenacibaculum maritimum   infection
Provedor de dados: 5
Autores: Alix, Maud; Gasset, Eric; Bardon-albaret, Agnes; Noel, Jean; Pirot, Nelly; Perez, Valérie; Coves, Denis; Saulnier, Denis; Lignot, Jehan-hervé; Cucchi, Patricia N.
Background Ephippidae fish are characterized by a discoid shape with a very small visceral cavity. Among them Platax orbicularis has a high economic potential due to its flesh quality and flesh to carcass ratio. Nonetheless, the development of its aquaculture is limited by high mortality rates, especially due to Tenacibaculum maritimum infection, occurring one to three weeks after the transfer of fishes from bio-secure land-based aquaculture system to the lagoon cages for growth. Among the lines of defense against this microbial infection, the gastrointestinal tract (GIT) is less studied. The knowledge about the morphofunctional anatomy of this organ in P. orbicularis is still scarce. Therefore, the aims of this study are to characterize the GIT in...
Tipo: Text
Palavras-chave: Digestive system; Tenacibaculosis; Mucous; Osmoregulation; Absorption; Batfish; Teleost.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00652/76421/77485.pdf

Absorption et régénération de l'azote dans le système brassé de la Manche : productions nouvelle et régénérée
Provedor de dados: 5
Autores: Maguer, Jf; L'Helguen, S; Madec, C; Le Corre, P.
Nitrate and ammonium uptake rates were measured in spring and summer in deep and shallow well-mixed waters of the English Channel during different cruises between 1986 and 1994. In the deep waters, nitrate uptake was relatively low during phytoplankton development and ammonium uptake represented more than 70 % of the total uptake irrespective of the season. In the shallow waters, nitrate uptake during spring phytoplankton growth was high and represented about 75 % of the total uptake. Ammonium uptake became substantial towards the end of spring and summer. The high contribution of ammonium to the nitrogenous nutrition of phytoplankton over the whole of the well-mixed waters is related to a high rate of recycling of nitrogen in the water column. Ammonium...
Tipo: Text
Palavras-chave: Azote; Absorption; Régénération; Productions nouvelle et régénérée; Manche; Nitrogen; Uptake; Regeneration; New and regenerated productions; English Channel.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00325/43644/43246.pdf

The selection of an ideal diet for Ostrea edulis (L.) broodstock conditioning (part B)
Provedor de dados: 5
Autores: Gonzalez-araya, Ricardo; Lebrun, Luc; Quere, Claudie; Robert, Rene.
Four microalgae species (Rhodomonas salina, Thalassiosira weissflogii, Thalassiosira pseudonana and Pavlova lutheri) were evaluated to estimate their potential as food for Ostrea edulis (L.) reproductive conditioning. Best ingestion and absorption were observed with R. salina (3.44 and 1.59 mg g− 1 h− 1, respectively), followed by T. pseudonana (2.75 and 0.98 mg g− 1 h− 1) and P. lutheri (2.40 and 0.91 mg g− 1 h− 1). Oysters fed T. weissflogii exhibited the lowest ingestion and absorption values (1.40 and 0.68 mg g− 1 h− 1). Proximate composition (proteins and carbohydrates) and lipid content (fatty acids and sterols) analysed in four main tissues (gonad, digestive gland, muscle and gills) also differed significantly with diet. Protein ranged from 355 mg...
Tipo: Text
Palavras-chave: Ostrea edulis; Conditioning; Algal diets; Ingestion; Absorption; Biochemical composition.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00090/20092/17731.pdf

Combined oral toxicity of azaspiracid-1 and yessotoxin in female NMRI mice
Provedor de dados: 5
Autores: Aasen, John A. B.; Espenes, Arild; Miles, Christopher O.; Samdal, Ingunn A.; Hess, Philipp; Aune, Tore.
For many years, the presence of yessotoxins (YTXs) in shellfish has contributed to the outcome of the traditional mouse bioassay and has on many occasions caused closure of shellfisheries. Since YTXs do not appear to cause diarrhoea in man and exert low oral toxicity in animal experiments, it has been suggested that they should be removed from regulation. Before doing so, it is important to determine whether the oral toxicity of YTXs is enhanced when present together with shellfish toxins known to cause damage to the gastrointestinal tract. Consequently, mice were given high doses of YTX, at 1 or 5 mg/kg body weight, either alone or together with azaspiracid-1 (AZA1) at 200 μg/kg. The latter has been shown to induce damage to the small intestine at this...
Tipo: Text
Palavras-chave: Azaspiracid-1; AZA1; Yessotoxin; YTX; Marine algal toxins; Absorption; Pathology; Sublethal; NMRI; Mice; LC-MS/MS; Oral toxicity.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00034/14477/11776.pdf

Ecophysiologie de la maturation sexuelle et de la ponte de l'huître creuse Crassostrea gigas : réponses métaboliques (respiration) et alimentaires (filtration, absorption) en fonction des différents stades de maturation
Provedor de dados: 5
Autores: Soletchnik, Patrick; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe.
The study of maturation and spawning of the oyster is part of a research program to investigate the summer mortalities of the oysters, Crassostrea gigas in Marennes-Oléron Bay. Four maturity stages were simultaneously obtained by diet and thermal conditioning (immature, low maturation, mature and post-spawning stages). Measurements of clearance, filtration, absorption and respiration rates allowed a calculation of the scope for growth and hence an estimation of the oyster's energetic budget at various maturity stages. Male and female oysters had similar physiological responses. The filtration rate ranged from 2.4 to 2.6 1.h(-1) at the early stages of maturation and decreased to 1.8 1.h.' during the maturity stage. Growth rate resulting from gonad...
Tipo: Text
Palavras-chave: Huître; Crassostrea gigas; Conditionnement; Maturation; Filtration; Absorption; Respiration; Oyster; Crassostrea gigas; Conditioning; Maturation; Filtration; Absorption and respiration rates.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/1997/publication-3090.pdf

A physiological and biochemical approach to selecting the ideal diet for Ostrea edulis (L.) broodstock conditioning (part A)
Provedor de dados: 5
Autores: Gonzalez-araya, Ricardo; Queau, Isabelle; Quere, Claudie; Moal, Jeanne; Robert, Rene.
To select the best microalgae for Ostrea edulis conditioning, four single species diets were fed to batches of broodstock, which were then compared using physiological and biochemical approaches. Ingestion and absorption were first studied, showing that Chaetoceros gracilis and Skeletonema marinoï were efficiently ingested (4.9–5.3 mg g−1 h−1) and absorbed (1.9–2.5 mg g−1 h−1) while Tetraselmis suecica led to the lowest physiological responses (0.36 and 0.12 mg g−1 h−1 respectively). When O. edulis were fed any microalgae except T-ISO with only 79 mg g−1, gonads accumulated carbohydrates from 116 to 141 mg g−1 and the extent of accumulation depended on the species supplied in the order T. suecica&lt;C. gracilis&lt;S. marinoï. When oysters were fed either...
Tipo: Text
Palavras-chave: Ostrea edulis; Conditioning; Algal diets; Ingestion; Absorption; Biochemical composition.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00033/14449/11748.pdf

Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract
Provedor de dados: 77
Autores: Rodrigues,Ana Paula Oeda; Cargnin-Ferreira,Eduardo.
The present study describes the morphology and histology of the digestive tract of juvenile pirarucu, which is a Neotropical fish species with great potential for aquaculture in the Amazon region. Three size classes of pirarucu juveniles from commercial fish farms were sampled for histological examination of the oesophagus, stomach, pyloric caeca, intestine and liver. The morphological and histological features of the pirarucu digestive tract are similar to other carnivorous teleosts and enable the species to ingest, store and digest large food items. Acidic and neutral mucins are secreted by the mucosa of the oesophagus, stomach, pyloric caeca and intestine to protect the mucosal epithelium and to lubricate and facilitate food passage along the digestive...
Tipo: Journal article
Palavras-chave: Aquaculture; Fish nutrition; Digestion; Absorption; Carnivorous; Osteoglossiformes.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000300025

Studies on the water quality of River Ramisi near a sugar factory
Provedor de dados: 20
Autores: Oteko, D.
The findings are presented of a study conducted to investigate the  quality of the water at the Ramisi Estuary, which is affected by  effluents from a sugar factory. The river was found to be polluted all year round by these wastes and the need for proper treatment of the waste before discharging is stressed.
Tipo: Journal Contribution
Palavras-chave: Industrial wastes; Brackishwater pollution; Freshwater pollution; Pollution monitoring; Wastes; Absorption; Wastes.
Ano: 1986
URL: http://hdl.handle.net/1834/1210

Studies on the water quality of River Ramisi near a sugar factory
Provedor de dados: 20
Autores: Oteko, D.
The findings are presented of a study conducted to investigate the  quality of the water at the Ramisi Estuary, which is affected by  effluents from a sugar factory. The river was found to be polluted all year round by these wastes and the need for proper treatment of the waste before discharging is stressed.
Tipo: Journal Contribution
Palavras-chave: Industrial wastes; Brackishwater pollution; Freshwater pollution; Pollution monitoring; Wastes; Absorption; Wastes.
Ano: 1986
URL: http://hdl.handle.net/1834/1210

Chickpea Cultivar ICCV 1
Provedor de dados: 30
Palavras-chave: Chickpeas; Pigeonpeas; Absorption; Humus; Tillage equipment; Land management; Yields; Sampling; Selection; Tropical zones.
Ano: 1984
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3772

Chickpea Cultivar ICCV 1
Provedor de dados: 30
Palavras-chave: Chickpeas; Pigeonpeas; Absorption; Humus; Tillage equipment; Land management; Yields; Sampling; Selection; Tropical zones.
Ano: 1984
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3164

A rapid screening method for grain iron content in Pearl Millet
Provedor de dados: 30
Autores: Velu, G.
Palavras-chave: Wood decay; Genotypes; Grain; Millets; Protocols; Flours; Sampling; Iron; Absorption; Potassium.
Ano: 2006
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3210

Nitrogen fertilization impact on agronomic traits of maize hybrids released at different decades
Provedor de dados: 86
Autores: Sangoi,Luís; Ender,Márcio; Guidolin,Altamir Frederico; Almeida,Milton Luiz de; Konflanz,Valmor Antônio.
Genetic selection of maize hybrids is often conducted using high N rates during the breeding cycle. This procedure may either lead to the release of genotypes that present nitrogen luxury consumption or require a stronger N input to accomplish their yield potential. This work was carried out to evaluate the effects of N rates on grain yield and N use efficiency of hybrids cultivated in different decades in Southern Brazil. The trial was performed in Lages, Santa Catarina State. A split plot design was used. Hybrids Ag 12, Ag 28, Ag 303 and Ag 9012, released during the 60's, 70's, 80's and 90's, respectively, were evaluated in the main plots. Nitrogen rates equivalent to 0, 50, 100 and 200 kg ha-1 were side-dressed in the split-plots when each hybrid had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Hybrids; Absorption; Crop yield.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2001000500005

Production and Nutrient Accumulation of Common Bean Cultivars under Competition with Weed
Provedor de dados: 87
Autores: COELHO,C.G.; DALVI,L.P.; OLIVEIRA,L.S.G.; OLIVEIRA,F.L.
ABSTRACT: Improper management of weeds is one of the causes of low bean yield, as it is very susceptible to interference due to their slow initial growth. This study aimed to evaluate the influence of dayflower on grain yield and nutrient accumulation of bean cultivars. The experiment was carried out in a screened house, in 5 L pots, in a 2 x 4 factorial scheme. Factor 1 corresponded to the presence or absence of weeds, and factor 2 bean cultivars: BRS Pontal, BRS Agreste, BRS Ametista and BRS Estilo. The experiment was arranged in a completely randomized design with five replications. The coexistence of bean and weed was maintained throughout the crop cycle. Chlorophyll content, number of pods per plant, number of grains per plant, nutrients contents (N -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Commelina diffusa L.; Grains; Phaseolus vulgares L.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100156

Sourgrass Resistance Mechanism to the Herbicide Glyphosate
Provedor de dados: 87
Autores: MELO,M.S.C.; ROCHA,L.J.F.N.; BRUNHARO,C.A.C.G.; NICOLAI,M.; TORNISIELLO,V.L.; NISSEN,S.J.; CHRISTOFFOLETI,P.J.
ABSTRACT: The knowledge on the mechanism that gives a weed resistance to a particular herbicide is essential regarding scientific, academic, and practical aspects because it determines the recommendations for prevention and management of resistance in the field. Studies on the sourgrass (Digitaria insularis) glyphosate resistance mechanism in the literature have not been conclusive. Thus, the aim of this research was to study and evaluate the putative resistance mechanisms whichgives sourgrass biotypes, the ability to survive after glyphosate application. For this, 14C-glyphosate leaf absorption and translocation were compared in the biotypes Matão (R), Campo Florido (MG), Diamantino (MT), and Iracemápolis (S) as a function of the time after its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Translocation; Mutation; 14C-glyphosate; Digitaria insularis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100232

Hub-and-Spokes Free-Trade-Agreements in the Presence of Technology Spillovers: An Application to the Western Hemisphere
Provedor de dados: 31
Autores: Das,   Gouranga Gopal; Andriamananjara,   Soamiely.
Using a comparative-static general equilibrium model and in the context of the western hemisphere, this paper compares the economic effects of a "hub-and-spokes (HAS)" type of bilateral trade configuration (with Chile being the hub) with those of a more comprehensive regional FTA (namely, the FTAA). The model is augmented to account for the possibility of technology spillovers and its effective assimilation among participating economies. In particular, absorptive capacity, governance factor, proximity and socio-institutional congruence conjointly determine an economy's capacity to capture the technology that is transmitted from developed spoke US to other regions.
Tipo: Working or Discussion Paper
Palavras-chave: Hub and spokes; Free trade areas; Technology transfer; Absorption; Governance; Welfare; Preference dilution; International Relations/Trade; Research and Development/Tech Change/Emerging Technologies; D58; F16; O4.
Ano: 2004
URL: http://purl.umn.edu/15870

Breed and Sex Differences in the Gross Anatomy, Digesta pH and Histomorphology of the Gastrointestinal Tract of Gallus Gallus Domesticus
Provedor de dados: 89
Autores: Mabelebele,M; Norris,D; Brown,D; Ginindza,MM; Ngambi,JW.
ABSTRACT A study was conducted to investigate the influence of breed and sex in the gross anatomy, digesta and histology of Ross 308 broiler and Venda chickens. Chickens were slaughtered at 90 days of age and the pH of the digestive organs was measured immediately after slaughter. The digestive organ weights and lengths of Ross 308 broiler and Venda chickens were measured. Tissue samples of the duodenum, ileum and jejunal from each treatment group were collected and histologically examined. Higher (p&lt;0.05) gizzard pH values were observed in male and female of Ross 308 broiler and Venda chickens. The jejunal and ileal pH values were lower (p&lt;0.05) for Venda chickens than in Ross 308 broiler chickens. The absolute weights of the gastrointestinal tract,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Chickens crypt depth digestive system villi height.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200339

Feeding high-moisture corn grain silage to broilers fed alternative diets and maintained at different environmental temperatures
Provedor de dados: 89
Autores: Cruz-Polycarpo,VC; Sartori,JR; Gonçalves,JC; Pinheiro,DF; Madeira,LA; Polycarpo,GV; Zanetti,LH; Santos,TS; Pezzato,AC.
The effects of the dietary substitution of dry corn by high-moisture corn grain silage (HMCGS) were evaluated on the performance, nutrient digestibility and serum biochemical parameters of broilers reared in an alternative production system and submitted to different environmental temperatures. A total of 288 one-day-old male Cobb chicks were distributed according to a randomized block design in a 3x4 factorial arrangement: three environmental temperatures (hot, thermoneutral or cold) and four levels of HMCGS in substitution of dry corn (0%, 20%, 40% or 60%). The acid analysis showed that the evaluated HMCGS contained average percentage values of ethanol, lactic acid, and acetic acid (expressed in 100% of dry matter) of 0.7690, 2.7320 and 0.0249%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Alternative feeds; Poultry; Cholesterol; Metabolism; Triglycerides.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400017

Dry matter and macronutrient extraction curves of potato varieties in the Alto Paranaíba region, Brazil
Provedor de dados: 91
Autores: Silva,Carlos D. da; Soares,Maria E. P.; Ferreira,Miller H.; Cavalcante,Alian C. P.; Andrade,Guilherme A. V. de; Aquino,Leonardo A. de.
ABSTRACT Information on plant nutrient extraction is of utmost importance for the management of fertilization in crops. The objective of the study was to determine the accumulation of dry matter mass in the tubers and aerial parts of the plants and to generate absorption curves of macronutrients N, P, K, Ca and Mg for the potato varieties Ágata, Asterix, Atlantic and Taurus. The shoot and tuber samples were collected at 6, 13, 54, 66, 70, 82 and 97 days after planting. The highest accumulation of dry matter was observed in the Asterix and Atlantic varieties. The varieties Asterix and Atlantic showed higher N and K extraction and, consequently, higher productivity, while Taurus and Ágata presented lower yields and nutrient extraction. The period of greatest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Absorption; Nutrients.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300176

Boron rates for triticale and wheat crops
Provedor de dados: 63
Autores: Corrêa,Juliano Corulli; Esteves,José Antônio de Fátima; Grassi Filho,Helio; Alves,Elza; Ceccon,Gessi.
No reports are registered on responses to boron fertilization nutrient deficiency and toxicity in triticale crops. The aim of this study was to evaluate triticale response to different rates of boron in comparison to wheat in an hapludox with initial boron level at 0.08 mg dm-3 4 &lt;FONT FACE=Symbol&gt;´&lt;/FONT&gt; 4 factorial design trial completely randomized blocks design (n = 4). Boron rates were 0; 0.62; 1.24 and 1.86 mg dm-3; triticale cultivars were IAC 3, BR 4 and BR 53 and IAPAR 38 wheat crop was used for comparison. The wheat (IAPAR 38) crop presented the highest boron absorption level of all. Among triticale cultivars, the most responsive was IAC 53, presenting similar characteristics to wheat, followed by BR 4; these two crops are considered...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticosecale; Triticum aestivum; Absorption.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200009

Design, development and performance of solar dryer for pineapple (Ananas comosus (L.) Merr.), mamey (Mammea americana L.) and banana (Musaparadisiaca L.) fruit drying
Provedor de dados: 109
Autores: Macías-Ganchozo,Edgar Ruperto; Bello-Moreira,Italo Pedro; Trueba-Macías,Sabrina Liz; Anchundia-Muentes,Xavier Enrique; Anchundia-Muentes,Manuel Eduardo; Bravo-Moreira,Celio Danilo.
Abstract The aim of the present research was to know the shelf life of dehydrated tropical fruits based on an indirect type solar dryer, which was designed and developed under the conditions of Calceta, Bolívar canton of Manabí province, Ecuador. Due to the banana fruit physical and chemical characteristics exhibited during the process of dehydration by radiation, satisfactory results were obtained, superior to those obtained in fruits of mamey and pineapple. For example, moisture in banana with 80.22% dropped to 10.35%; in relation to protein ratio, which had achieved an increasing from 1.27% in its fresh state to 2.18% and in fiber contents from 0.88% in its fresh state to 2.41%. The microbiological analyzes determined the shelf life of the estimated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Convective multi-flash drying process (CMDF); Fruit dehydration; Fruit postharvest; Solar energy; Water activity.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100030

Growth, yield and agronomic efficiency of rice (Oryza sativa L.) cv. IAPAR 117 affected by nitrogen rates and sources
Provedor de dados: 109
Autores: Sandoval-Contreras,Héctor Augusto; Ribeiro-Barzan,Renan; Sandoval-Contreras,Mario; Rodrigues-Brito,Osmar.
Abstract The aim of this research was to evaluate two traditional N sources (urea and ammonium sulfate) and an alternative one (sulfamoo) with increasing rates (0, 40, 80, 120 and 160 kg N ha-1, respectively) affecting aspects of upland rice crop cv. IAPAR 117. The experiment was carried out in greenhouse conditions, using a completely randomized design in 3x4 factorial scheme, with four replicates. It was evaluated the number of tillers (NT), plant mean height (PMH), dry matter of shoots (DMS), crop yield/mass of filled grains (MFG), content of N-DMS, agronomic efficiency of nitrogen (AE), mass of 100 filled grains (M100FG) and grain harvest index (GHI). The nitrogen rates application as ammonium sulfate resulted in a greater increasing of NT, DMS, MFG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Fertilizer formulations; Plant growth parameters; Productive performance; Upland.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400558

Gold phytoextraction and mining-degraded soil reclamation
Provedor de dados: 109
Autores: Ramírez Pisco,Ramiro; Gómez Yarce,Juan Pablo; Guáqueta Restrepo,Juan José; Gaviria Palacio,Daniel.
Abstract Gold phytoextraction is a technology used to obtain this metal (Au) throughout plants. Some of the benefits of this technology are the mitigation of the environmental impact, the fact that it does not imply the constant use of pollutants, and has the ability to promote soil reclamation. The aim of this research was to determine if Brachiaria decumbens has the potential to improve soil physical properties while had achieved a gold extraction. For this purpose, Helianthus annuus and Brachiaria decumbens, were used in a completely randomized design with four replicates. To induce gold uptake, ammonium thiocyanate was applied to plants. The statistical analysis was performed using the R-Studio software. Finally, it became evident that B. decumbens is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Aggregates; Transpiration; Roots.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400574

Aplicação de zinco em sementes de sorgo cv. BRS 304: efeitos na nutrição e no crescimento inicial - DOI: 10.4025/actasciagron.v30i4.5300
Provedor de dados: 1
Autores: Romualdo, Liliane Maria; UNESP; Rozane, Danilo Eduardo; UNESP.
O efeito do zinco aplicado, em sementes na nutrição do sorgo, é afetado pelas fontes e doses empregadas. O presente trabalho objetivou avaliar a aplicação de zinco, a partir de duas fontes, sobre a nutrição e o crescimento inicial da cultura do sorgo cv. BRS 304, cultivado em areia. Os tratamentos foram cinco doses (0; 14,3; 28,6; 57,2 e 114,4 g kg-1 de semente) e  duas  fontes de zinco, o sulfato (22% de Zn) e o óxido (50% de Zn). Aos 25 dias após a semeadura, efetuou-se o corte das plantas, e avaliou-se a massa seca da parte aérea e das raízes, e determinou-se o teor e o acúmulo de Zn nas plantas. A aplicação de 14 g Zn kg-1 de sementes, na forma de óxido, proporcionou adequado crescimento inicial do sorgo cv. BRS 304. A fonte sulfato promoveu maior...
Palavras-chave: 5.01.00.00-9    Agronomia Sorghum bicolor; Micronutriente; Adubação; Absorção. Sorghum bicolor; Micronutrient; Fertilization; Absorption.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5300

Chromium oxide (51Cr2O3 ) used as biological marker was not absorbed by fish
Provedor de dados: 45
Autores: Sakita,G.Z.; Meira,D.C.; Bremer Neto,H.; Cyrino,J.E.P.; Abdalla,A.L.
The aim of this study was to evaluate the rate absorption of radio-labeled chromium oxide (51Cr2O3), used as biological marker in nutrition studies with Nile tilapia Oreochromis niloticus. An experimental diet with approximately 58 µCi of specific activity of the element was encapsulated and fed daily to 35 adult Nile tilapia; a group of 35 fish was used as control feeding on a basal diet. At the beginning of the experiment five fish from each group were randomly selected and blood samples were drawn from control (BC) and experimental fish (BE). Fish were then euthanized by anesthetic overdoses and samples of the liver tissue (LT), renal tissue (RT), stomach without content (S), intestine without content (I), gills tissue (GT), muscle tissue (fillet; MT),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nile tilapia; Oreochromis niloticus; Absorption; Digestibility; Nutrition.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000300755

Ethanol affects the absorption and tissue distribution of orally administered antigens in mice
Provedor de dados: 52
Autores: Oliveira,Flávia Márcia; Gusmão,Leandro José; Cardoso,Valbert do Nascimento; Ramaldes,Gilson Andrade; Ruiz-de-Souza,Valéria; Gontijo,Cristiano Machado.
The aim of this work was to evaluate the effects of ethanol on the adsorption and tissue distribution of orally administered antigens in mice. Results showed that ethanol reduced the level of anti-ovalbumin IgA antibodies in intestinal fluid for the mice treated orally with a palmitoyl-ovalbumin conjugate. Ethanol was administered intragastrically to mice at 5 g/kg body weight for 14 days (chronic treatment), or 10 g/kg body weight every 7th day up to 14 days (acute treatment). Thereafter, 99m technetium-labeled antigens were administered and lymphoid tissues were collected. Ethanol interfered with the transport of ovalbumin to the liver. Moreover, the transport of palmitoyl-ovalbumin to mesenteric lymph nodes was reduced 6 h after the antigen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethanol; Absorption; Biodistribution; Technetium; Immune response.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400008

Consumption of ferulic and p-hydroxybenzoic acids by soybean root tips
Provedor de dados: 52
Autores: Silva,Hélio Cândido da; Herrig,Vanessa; Ferrarese,Maria de Lourdes L.; Ferrarese-Filho,Osvaldo.
Depletion method was used to describe how soybean root consumed ferulic and p-hydroxybenzoic acids in nutrient culture. The results showed that excised cultured soybean roots consumed these allelochemicals very rapidly. At concentrations between 0.1 and 1.0 mM, roots consumed 50% or more of ferulic acid after 6-h depletion. Although consumption started only after 3 h, similar behavior was verified with p-hydroxybenzoic acid.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max L. Merr.; Root; Absorption; Allelochemicals.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000300006

Factors involved with cadmium absorption by a wild-type strain of Saccharomyces cerevisiae
Provedor de dados: 58
Autores: Adamis,Paula D.B.; Panek,Anita D.; Leite,Selma G.F.; Eleutherio,Elis C.A.
At the concentration used in this work (10 ppm), cadmium was efficiently removed from the environment by stationary yeast cells. While exponential phase cells showed low capacity of cadmium absorption, stationary cells removed 97% of the original metal in 24 hours. Total cadmium absorption shown by dry cells was lower than that of fresh ones, although both cells removed 50% of metal during the first hour of treatment. We also verified that only viable cells were capable of absorbing cadmium. Independently of the growth phase, cells showed high tolerance to 10 ppm CdSO4 and about 80% of cells remained viable after 24 hours exposure to cadmium. However, when stationary phase cells were previously dehydrated and then exposed to cadmium, they exhibited poor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharomyces cerevisiae; Cadmium; Absorption; Intracellular oxidation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000100012

Contribution of nitrogen derived from mineral supplementation for soybean seedlings
Provedor de dados: 64
Autores: Conceição,Gerusa Massuquini; Martin,Thomas Newton; Brunetto,Gustavo; Backes,Rogério Luiz; Andrade,Fabrício Fuzzer de; Beche,Manoela.
ABSTRACT Seeds can absorb N from mineral supplementation, thus stimulating seedling development in soybeans (Glycine max (L.) Merrill). This study aimed to evaluate the contribution to soybean seedlings of N derived from mineral supplementation in seeds with different nutritional contents. Seeds of the cultivar BMX Potência RR received mineral supplementation enriched with 2.5% excess 15N. The treatments were performed in seeds in two lots, one with high and one with low nutritional content. At 2, 6 and 10 days after sowing on paper towels, the seedlings were collected and separated into cotyledons, roots and shoots. Dry matter production, root length and root volume were assessed. Total N and 15N values were analyzed in the seedling organ tissues. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max (L.) Merrill; Absorption; Distribution; 15N.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100033