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Registros recuperados: 35
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A test of the utility of DNA barcoding in the radiation of the freshwater stingray genus Potamotrygon (Potamotrygonidae, Myliobatiformes) Genet. Mol. Biol.
Toffoli,Daniel; Hrbek,Tomas; Araújo,Maria Lúcia Góes de; Almeida,Maurício Pinto de; Charvet-Almeida,Patricia; Farias,Izeni Pires.
DNA barcoding is a recently proposed global standard in taxonomy based on DNA sequences. The two main goals of DNA barcoding methodology are assignment of specimens to a species and discovery of new species. There are two main underlying assumptions: i) reciprocal monophyly of species, and ii) intraspecific divergence is always less than interspecific divergence. Here we present a phylogenetic analysis of the family Potamotrygonidae based on mitochondrial cytochrome c oxidase I gene, sampling 10 out of the 18 to 20 valid species including two non-described species. Potamotrygonidae systematics is still not fully resolved with several still-to-be-described species while some other species are difficult to delimit due to overlap in morphological characters...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Potamotrygon; Barcoding; Radiation; Phylogenetics; COI; MtDNA.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200028
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Anther culture of rice : effects of radiation and media components on callus induction and plant regeneration International Rice Research Institute
Aldemita, Rhodora Romero.
166 l. : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Anther culture; Radiation; Growing media; Callus formation; Regeneration.
Ano: 1988 URL: http://hdl.handle.net/123456789/1251
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Balanco de energia num pomar de mangueiras irrigado. Repositório Alice
LOPES, P. M. O.; SILVA, B. B. da; AZEVEDO, P. V. de; SILVA, V. de P. R. da; TEIXEIRA, A. H. de C.; SOARES, J. M.; ESPINOLA SOBRINHO, J..
Objetivando avaliar os valores diurnos dos componentes do balanco de energia, baseado na razao de Bowen, num pomar de mangueiras (Mangifera indica L), variedade Tommy Atkins, irrigado por gotejamento, foram analisados dados de um experimento agrometeorologico conduzido no periodo de 6 de agosto a 22 de novembro de 1998, no Projeto Bebedouro em Petrolina, PE (09"S; 4(;'22 'W;. 365,5m). Os resultados mostraram que o fluxo de calor no solo representa uma pequena fracao do saldo de radiacao, com valores em geral menores ou iguais a 7% do saldo de radiacao. Os padroes do saldo ide radiacao (Rn) e dos fluxos de calor latente (LE), de calor sensivel para o ar (H) e para o solo (G), foram semelhantes aqueles observados em culturas de pequeno e medio porte, apesar...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Variedade Tommy Atkins; Variety; Radiation; Balanço de Energia; Manga; Mangifera Indica; Radiação; Energy balance.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/134336
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Barge pour environnements type Bresil : essais en bassin ArchiMer
Le Boulluec, Marc; Maisondieu, Christophe; Du Plessix, Guillaume; Cordeau, Cyril.
drilling capability designed by SAIPEM for oil production offshore Brazil or area with equivalent environmental conditions. A central moon-pool is surrounded by a system of walls and columns above an immersed pontoon. An upper deck is situated above the water line. Sea water can flow between walls and columns above the pontoon. The aim of wave tank experiments is to validate the preliminary sea keeping calculations and study the free surface effects inside the moon-pool and above the pontoon.
Tipo: Text Palavras-chave: Hydrodynamique; Essais en bassin; Houle; Surélévations; Diffraction; Radiation; Moon-pool.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/00170/28169/26403.pdf
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Biochemical and hematological study of goats envenomed with natural and 60Co-irradiated bothropic venom J. Venom. Anim. Toxins incl. Trop. Dis.
Lucas de Oliveira,P. C.; Sakate,M.; Madruga,R. A.; Barbosa,N. P.U..
Venoms from snakes of the Bothrops genus are proteolytic, coagulant, hemorrhagic and nephrotoxic, causing edema, necrosis, hemorrhage and intense pain at the bite site, besides systemic alterations. Many adjuvants have been added to the venom used in the sensitization of antiserum-producer animals to increase antigenic induction and reduce the envenomation pathological effects. Gamma radiation from 60Co has been used as an attenuating agent of the venoms toxic properties. The main objective was to study, comparatively, clinical and laboratory aspects of goats inoculated with bothropic (Bothrops jararaca) venom, natural and irradiated from a 60Co source. Twelve goats were divided into two groups of six animals: GINV, inoculated with 0.5mg/kg of natural...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Radiation; Bothrops jararaca; Cobalt; Goats.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000300003
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Componentes do balanco de energia em pomar irrigado no Nordeste. Repositório Alice
SILVA, B.B. da; SILVA, V. de P.R. da; AZEVEDO, P.V. de; LOPES, P.M. de O.; TEIXEIRA, A.H. deC,; SOARES, J.M.; ESPINOLA SOBRINHO, J..
2000
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Pomar; Irrigacao; Balanco de energia; Radiacao solar; Agrometeorologia; Brasil; Nordeste; Irrigated orchards; Energy balance; Radiation; Agrometeorolgy; Brazil; Northeast.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/handle/doc/134373
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Componentes do balanco de energia num pomar de mangueiras em condicoes especificas de nebulosidade. Repositório Alice
SILVA, V. de P. R. da; AZEVEDO, P. V. de; SILVA, B. B. dA; TEIXEIRA, A. H. de C.; SOARES, J. M.; ESPINOLA SOBRINHO, J..
O presente trabalho tem como objetivo analisar o comportamento médio dos componentes do balanço de energia, ao longo do ciclo produtivo da mangueira, em condições específicas de energia, e a eficiência dos modelos de estimativa do fluxo de calor latente em função do saldo de radiação.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Radiation; Balanço de Energia; Manga; Radiação; Energy balance; Mangoes.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/134268
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Crescimento e desenvolvimento da cultura do milho (Zea mays, L.) em semeadura tardia e sua relação com graus-dia e radiação solar global. Repositório Alice
GUISCEM, J.M.; SANS, L.M.A.; NAKAGAWA, J.; CRUZ, J. C.; PEREIRA FILHO, I. A.; MATEUS, G.P..
Foram avaliados a relação dos graus-dia e da radiação solar global com a altura da planta e com o aparecimento e comprimento das folhas em duas cultivares de milho (Zea mays L.), BR 206 (ciclo normal) e XL212 (ciclo superprecoce). O experimento foi conduzido, em condições de campo, com irrigação, na área experimental da EMBRAPA - Milho e Sorgo, em Sete Lagoas, MG. O delineamento experimental utilizado foi de blocos casualizados com 3 repetições. A semeadura foi feita na primeira quinzena de fevereiro de 1994. Diariamente, foram registrados numa estação meteorologica portátil eletrônica, as temperaturas máxima e mínima do ar e a radiação solar global. As mensurações de altura da planta, da qualidade de folhas com bainha (FCB) e sem bainha (FSB) expostas e...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Milho; Desenvolvimento; Crescimento; Semeadura tardia; Graus-dia; Radicao solar global; Zea mays; Maize; Development; Late sowing; Degree days; Radiation; Growing.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/472286
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Crescimento vegetativo e produção de óleo essencial de hortelã-pimenta cultivada sob malhas. Repositório Alice
COSTA, A. G.; CHAGAS, J. H.; PINTO, J. E. B; P.; BERTOLUCCI, S. K. V..
2012
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Mentha piperita; Mentol; Mentona; Qualidade da luz; Radiação; Menthol; Menthone; Light quality; Radiation.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/950554
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Dehydration of infrared ginger slices: heat and mass transfer coefficient and modeling Ciência e Agrotecnologia
Corrêa,Paulo Cesar; Baptestini,Fernanda Machado; Zeymer,Juliana Soares; Araujo,Marcos Eduardo Viana de; Freitas,Rita Cristina Pereira de; Leite,Rildo Araujo.
ABSTRACT Dehydration of plant products extends its shelf life and reduces its mass and volume, which increases transport and storage efficiency and adds value to food. However, it is an intensive process in energy and time, making necessary the search for more efficient technologies, Thus, this study aimed to investigate the infrared ginger dehydration process by approaching the constant period of dehydration to the theory of mass and heat transfer process to the wet bulb thermometer and the decreasing period of dehydration to liquid diffusion theory. We submitted 5.0 mm thickness and 2.0 cm diameter slices to a dryer with infrared radiation at 50, 60, 70, 80, 90 and 100 °C until constant mass. Heat and mass transfer coefficients, and effective diffusion...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Modified Henderson and Pabis; Radiation; Water content; Zingiber officinale.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100400
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Development and comparative evaluation of radiation-based reference evapotranspiration equations for sub-humid Hazaribagh region of Jharkhand CIGR Journal
TOMAR, ARVIND SINGH.
In this study, two site-specific solar radiation (Rs) and net radiation (Rn) based equations for estimating reference evapotranspiration (ET­0) were developed and their performance were statistically analysed in comparison to widely accepted FAO Penman-Monteith method (PMF-56) and four other standard radiation methods for sub-humid Hazaribagh region of Jharkhand. These two equations were developed with daily values of Rs and Rn in conjunction with maximum and minimum air temperature by taking daily PMF-56 ET0 values as index with weather dataset of 15 years (1990-2004). The performance of these equations validated with carefully screened daily weather dataset of eight years (2005-2012) with other considered standard methods revealed that they estimated ET0...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Site-specific; Radiation; Statistical performance; India..
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3121
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Development and comparative evaluation of radiation-based reference evapotranspiration equations for sub-humid Hazaribagh region of Jharkhand CIGR Journal
ARVIND SINGH TOMAR; GBPUAT, PANTNAGAR.
In this study, two site-specific solar radiation (Rs) and net radiation (Rn) based equations for estimating reference evapotranspiration (ET­0) were developed and their performance were statistically analysed in comparison to widely accepted FAO Penman-Monteith method (PMF-56) and four other standard radiation methods for sub-humid Hazaribagh region of Jharkhand. These two equations were developed with daily values of Rs and Rn in conjunction with maximum and minimum air temperature by taking daily PMF-56 ET0 values as index with weather dataset of 15 years (1990-2004). The performance of these equations validated with carefully screened daily weather dataset of eight years (2005-2012) with other considered standard methods revealed that they estimated ET0...
Palavras-chave: Site-specific; Radiation; Statistical performance; India..
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3121
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Dinámica de crecimiento y rendimiento de forraje de diez variedades de alfalfa. Colegio de Postgraduados
Rojas García, Adelaido Rafael.
El objetivo del presente estudio fue evaluar la respuesta productiva de 10 variedades de alfalfa con intervalos de corte definidos estacionalmente. El estudio se realizó de junio de 2010 a junio de 2011 en el Colegio de Postgraduados. Las variedades evaluadas fueron: Aragón, Valenciana, Chipilo, Milenia, Oaxaca, San Miguelito, Júpiter, Atlixco, Vía láctea y Cuf 101, las cuales se distribuyeron en un diseño completamente al azar con cuatro repeticiones. Las variedades Júpiter y Milenia con 20,275 y 20,644 kg MS ha-1 registraron los mayores rendimientos y el menor para las variedades Cuf 101 y Aragón con 13,350 y 14,488 kg MS ha-1, respectivamente. Las variedades con mayor tasa de crecimiento promedio anual fueron Milenia y Júpiter con 57 y 56 kg MS ha-1d-1,...
Palavras-chave: Medicago sativa; Rendimiento; Radiación; Indice de área foliar; Yield; Radiation; Foliar area index; Ganadería; Maestría.
Ano: 2011 URL: http://hdl.handle.net/10521/514
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Dinámica de crecimiento y rendimiento de forraje de diez variedades de alfalfa. Colegio de Postgraduados
Rojas García, Adelaido Rafael.
El objetivo del presente estudio fue evaluar la respuesta productiva de 10 variedades de alfalfa con intervalos de corte definidos estacionalmente. El estudio se realizó de junio de 2010 a junio de 2011 en el Colegio de Postgraduados. Las variedades evaluadas fueron: Aragón, Valenciana, Chipilo, Milenia, Oaxaca, San Miguelito, Júpiter, Atlixco, Vía láctea y Cuf 101, las cuales se distribuyeron en un diseño completamente al azar con cuatro repeticiones. Las variedades Júpiter y Milenia con 20,275 y 20,644 kg MS ha-1 registraron los mayores rendimientos y el menor para las variedades Cuf 101 y Aragón con 13,350 y 14,488 kg MS ha-1, respectivamente. Las variedades con mayor tasa de crecimiento promedio anual fueron Milenia y Júpiter con 57 y 56 kg MS ha-1d-1,...
Palavras-chave: Medicago sativa; Rendimiento; Radiación; Indice de área foliar; Yield; Radiation; Foliar area index; Ganadería; Maestría.
Ano: 2011 URL: http://hdl.handle.net/10521/514
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Effect of dietary energy and stocking density on the performance and sensible heat loss of broilers reared under tropical winter conditions Rev. Bras. Ciênc. Avic.
Nogueira,WCL; Velásquez,PAT; Furlan,RL; Macari,M.
The objective of the present study was to evaluate the effects of different dietary energy levels and stocking densities on the thermoregulating parameters, live performance, and carcass traits of broilers reared under tropical winter conditions at different times of the day. In total, 1,312 one-d-old male broilers were used. Birds were allotted to three different stocking densities (10, 14 or 18 birds/m²) and two dietary energy levels (2900 or 3200 kcal ME/kg). The following parameters were evaluated:radiant heat load (RHL), rectal temperature (RT), feed intake (FI), weight gain (WG), feed conversion ratio (FCR), livability (L), production of live weight per area (WA), and carcass yield. Stocking density did not affect sensible heat loss (SRL) or rectal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Housing environment; Production capacity; Sensible heat; Broiler; Radiation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100009
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Gamma Radiation-induced Impairment of Hippocampal Neurogenesis,Comparison of Single and Fractionated Dose Regimens International Journal of Morphology
Khoshbin khoshnazar,A. R; Jahanshahi,M; Azami,N. S.
Radiation therapy of the brain is associated with many consequences, including cognitive disorders. Pathogenesis of radiation induced cognitive disorder is not clear, but reduction of neurogenesis in hippocampus may be an underlying reason. 24 adult male rats entered to study. Radiation absorbed dose to midbrain was 10 Gy, delivered by routine cobalt radiotherapy machine which its output was measured 115.24 cGy/min. The rats were divided in four groups of sixes, including groups of control, single fraction 10 Gy, fractionated 10 Gy and finally anaesthesia sham group. Number of pyramidal nerve cells was counted in two regions of hippocampus formation (CA1 and CA3). The radiation could reduce the number of cells in two regions of hippocampus significantly...
Tipo: Journal article Palavras-chave: Hippocampus; Neurogenesis; Radiation; Fractionation.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000100026
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High expression of the circadian gene mPer2 diminishes the radiosensitivity of NIH 3T3 cells BJMBR
Chang,L.; Liu,Y.Y.; Zhu,B.; Li,Y.; Hua,H.; Wang,Y.H.; Zhang,J.; Jiang,Z.; Wang,Z.R..
Period2 is a core circadian gene, which not only maintains the circadian rhythm of cells but also regulates some organic functions. We investigated the effects of mPeriod2 (mPer2) expression on radiosensitivity in normal mouse cells exposed to 60Co-γ-rays. NIH 3T3 cells were treated with 12-O-tetradecanoylphorbol-13-acetate (TPA) to induce endogenous mPer2 expression or transfected with pcDNA3.1(+)-mPer2 and irradiated with 60Co-γ-rays, and then analyzed by several methods such as flow cytometry, colony formation assay, RT-PCR, and immunohistochemistry. Flow cytometry and colony formation assay revealed that irradiated NIH 3T3 cells expressing high levels of mPer2 showed a lower death rate (TPA: 24 h 4.3% vs 12 h 6.8% and control 9.4%; transfection:...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Circadian; MPer2; Radiation; Cell death; Proliferation; DNA repair.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001000003
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Interannual and Seasonal Variations in Ecosystem Transpiration and Water Use Efficiency in a Tropical Rainforest ArchiMer
Aguilos, Maricar; Stahl, Clement; Burban, Benoit; Herault, Bruno; Courtois, Elodie; Coste, Sabrina; Wagner, Fabien; Ziegler, Camille; Takagi, Kentaro; Bonal, Damien.
Warmer and drier climates over Amazonia have been predicted for the next century with expected changes in regional water and carbon cycles. We examined the impact of interannual and seasonal variations in climate conditions on ecosystem-level evapotranspiration (ET) and water use efficiency (WUE) to determine key climatic drivers and anticipate the response of these ecosystems to climate change. We used daily climate and eddyflux data recorded at the Guyaflux site in French Guiana from 2004 to 2014. ET and WUE exhibited weak interannual variability. The main climatic driver of ET and WUE was global radiation (Rg), but relative extractable water (REW) and soil temperature (Ts) did also contribute. At the seasonal scale, ET and WUE showed a modal pattern...
Tipo: Text Palavras-chave: Tropical rainforest; Evapotranspiration; Water use efficiency; Drought; Radiation.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00484/59572/62542.pdf
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Light interception, leaf area and biomass production as a function of the density of maize plants analyzed using mathematical models Agronomy
Portes, Tomás Aquino; Melo, Hyrandir Cabral de.
Mathematical models were tested to correlate the leaf area index (LAI) of maize to the percentage of light intercepted by the canopy (% LIC) and this with the total dry matter of aerial parts (TDM), as well with the grain yield (GY). The experiment was conducted in a randomized block design, with four replications. The treatments consisted of hybrid maize at five plant densities: 4.0, 2.66, 2.0, 1.6, and 1.3 plants per m2 (pl m-2). At densities of 4.0 and 2.66 pl m-2, the average LAI and TDM did not differ among themselves but were significantly higher than those presented at the densities of 2.0, 1.66 and 1.3 pl m-2, which also did not differ among themselves. The number of corncobs per plant (cob pl-1) and GY behaved similarly. The LAI grew exponentially...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ciências Agrárias Fisiologia de Plantas Cultivadas age; Corn; Radiation; Yield Fisiologia de Plantas Cultivadas.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17892
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Modificação das características agrometeorológicas do sorgo pela adubação azotada IPB - Escola Superior Agrária
Costa, Luís de Sousa.
O presente estudo pretende contribuir para a avaliação da influência de diferentes níveis de adubação azotada nas características agrometeorológicas de desenvolvimento e crescimento do sorgo forrageiro de regadio, nas condições edafo-climáticas do Nordeste Transmontano. Analisou-se o efeito de quatro níveis de azoto no solo na forma como o crescimento e desenvolvimento do sorgo respondem à temperatura e à radiação solar, nomeadamente em termos de crescimento em altura, evolução do número de folhas, índice de área foliar, produção de biomassa, e extracção de azoto. Esta avaliação é feita em termos dos tempos térmicos de desenvolvimento, da eficiência de utilização da radiação para a produção de matéria seca e da eficiência de utilização do azoto. O estudo...
Tipo: DoctoralThesis Palavras-chave: Sorgo; Azoto; Temperatura; Radiação; Germinação; Área foliar; Produtividade; Intercepção da radiação; Eficiência de utilização da radiação; Eficiência de utilização do azoto; Sorghum; Nitrogen; Temperature; Radiation; Germination; Leaf area; Yield; Radiation interception; Radiation use efficiency; Nitrogen use efficiency.
Ano: 2009 URL: http://hdl.handle.net/10198/1197
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