Consulta: subjectFacets:"Ratio"
Registros recuperados: 10
Data/hora: 13/06/2024 07:19:59

Relaciones  NH4+/NO3- y Ca2+/K+ en la producción de fresa (Fragaria x ananassa Duch.) en hidroponia.
Provedor de dados: 32
Autores: Campos García, Tonatiu.
El objetivo de la presente investigación fue estudiar el efecto de las relaciones (en la solución nutritiva) amonio/nitrato (NH4+/NO3-) y calcio/potasio (Ca2+/K+) en plantas de fresa Fragaria x ananassa cv. Festival, cultivadas en fibra de coco en un sistema hidropónico. Los tratamientos de NH4+/NO3- fueron 100/0, 75/25, 25/75 y 0/100 en porcentaje de nitrógeno total y 58/42, 75/25, 50/50, 25/75 de Ca2+/K+. Los resultados obtenidos indicaron que las plantas con mayor crecimiento vegetativo y área foliar fueron las que se cultivaron con el tratamiento 100/0 donde se adicionó el 100% de nitrógeno en forma de amonio. También se observó que la corona es el órgano de la planta que concentra la mayor cantidad de NH4+ y NO3-. La concentración de azúcares y...
Palavras-chave: Fresa; Amonio; Nitrato; Relaciones; Producción; Strawberry; Ammonium; Nitrate; Ratio; Yield; Edafología; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2306

HYPERSPECTRAL SPECTROSCOPY TO DETECT DIFFERENT RESPONSES OF TWO SOYBEAN (GLYCINE MAX) CULTIVARS TO CHARCOAL ROT (MACROPHOMINA PHASEOLINA) TOXIN
Provedor de dados: 70
Autores: Al-Ahmadi,Ameer; Subedi,Arjun; Choudhary,Ruplal; Fakhoury,Ahmad; Watson,Dennis.
ABSTRACT Previous studies have confirmed the potential of hyperspectral spectroscopy (HS) to detect charcoal rot toxin effect on soybean (Glycine max). However, there is no evidence that it can differentiate among difference responses to that effect. This research tested the potential of HS (900–2400 nm) to differentiate different responses to charcoal rot effect caused by the fungal pathogen Macrophomina phaseolina. Known susceptible ‘Pharaoh’ and resistant ‘Spencer’ cultivars of soybean seedlings at the V1 stage were tested, and HS reflectance was measured in each treatment at 0 h (just before toxin treatment), 24 h, and 36 h after toxin treatment. For both cultivars, reflectance generally decreased up to 10% over time for controls and increased for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hyperspectral spectroscopy; Glycine Max; Charcoal rot; Ratio; Reflectance.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000100078

Inter and intra-specific growth and domoic acid production in relation to nutrient ratios and concentrations in Pseudo-nitzschia : phosphate an important factor
Provedor de dados: 5
Autores: Lema, Anais Kimberley; Latimier, Marie; Nezan, Elisabeth; Fauchot, Juliette; Le Gac, Mickael.
The factors responsible for inducing the synthesis of toxins and responses from toxic phytoplankton blooms remain unclear. In this study we compare the influence of genotypic (at both the intra and interspecific levels) and environmental factors (nutrient concentration and ratio) on growth (in terms of cell densities) and domoic acid (DA) production in three Pseudo-nitzschia species: P. australis, P.pungens and P.fradulenta. A strong phosphate effect was detected. More precisely, a low initial concentration in phosphate, even at high initial nitrogen and silicate concentrations, induced the highest DA concentrations and the lowest cell densities in all strains/species studied. In contrast, a low initial concentration of nitrogen and silicate combined, with...
Tipo: Text
Palavras-chave: Pseudo-nitzschia strains; Domoic acid; Ratio; Phosphate; Nitrogen.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00377/48849/49397.pdf

A Comparative Analysis of Surface Areas and Ratio of the Cervical Spinal Cord and the Vertebral Canal at the Same Levels Via MRI on Healthy Individuals
Provedor de dados: 77
Autores: Duman,Fatma; Ziylan,Taner; Kiresi,Demet; Cicekcibasi,Aynur Emine; Büyükmumcu,Mustafa; Duman,Tolga.
The determination of the normal values of the cross-sectional surface areas and ratios of the vertebral canal and the spinal cord on the healthy individuals is of great importance with regards to the fact that it provides convenience for the doctors to make correct pathological diagnosis because of the most suitable treatment. In this study, it has been aimed to determine the respective ratios between the vertebral canal and the spinal cord via measuring their cross-sectional surface areas at the C3­C6 vertebra levels. The study has been implemented on the Magnetic Resonance Images (MRI) of the cervical vertebral column from healthy individuals at the Department of Radiology, Meram Faculty of Medicine, Necmettin Erbakan University. The study has been...
Tipo: Journal article
Palavras-chave: Cervical; Vertebral canal; Spinal cord; Area; Ratio.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400008

Confidence intervals for rank statistics: Percentile slopes, differences, and ratios
Provedor de dados: 31
Autores: Newson,   Roger.
I present a program, censlope, for calculating confidence intervals for generalized Theil–Sen median (and other percentile) slopes (and per-unit ratios) of Y with respect to X. The confidence intervals are robust to the possibility that the conditional population distributions of Y , given different values of X, differ in ways other than location, such as having unequal variances. censlope uses the program somersd and is part of the somersd package. censlope can therefore estimate confounder-adjusted percentile slopes, limited to comparisons within strata defined by values of confounders, or by values of a propensity score representing multiple confounders. Iterative numerical methods have been implemented in the Mata language, enabling efficient...
Tipo: Article
Palavras-chave: Somersd; Censlope; ALSPAC; Robust; Confidence interval; Rank; Nonparametric; Median; Percentile; Slope; Difference; Ratio; Kendall's τ; Somers' D; Theil–Sen; Hodges–Lehmann; Confounder adjusted; Propensity score; Research Methods/ Statistical Methods.
Ano: 2006
URL: http://purl.umn.edu/119241

Post-harvest characterization of ‘Prata’ banana cultivar grown under different nitrogen and potassium fertilization
Provedor de dados: 94
Autores: Nomura,Edson Shigueaki; Cuquel,Francine Lorena; Damatto Junior,Erval Rafael; Bezerra,Daniela Peixoto; Borges,Ana Lúcia.
Abstract  There are several banana cultivars resistant to Black Sigatoka disease and to Panama disease, but due to the lack of information regarding post-harvest characteristics, many are rejected in the market. Nitrogen and potassium fertilization may help to improve the sensory characteristics of ripe banana, but there is lack of studies on its effects on banana cultivation, especially those resistant to diseases. The aim of this study was to evaluate the post-harvest characteristics of ‘Prata-Anã’, ‘BRS Platina’ and ‘PA94-01’ banana cultivars at four N and K2O fertilization levels (NK0: no fertilization, NK1: 175 and 285 kg ha-1 year-1, NK2: 350 and 570 kg ha-1 year-1, NK3: 525 and 855 kg ha-1 year-1, respectively) in three production cycles. It could...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp.; Banana; Nutrition; Acidity; Ratio.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000403001

Características produtivas, físicas e químicas de frutos de cultivares de pessegueiros sobre dois porta-enxertos no oeste do Estado de São Paulo
Provedor de dados: 94
Autores: Montes,Sônia Maria Nalesso Marangoni; Boliani,Aparecida Conceição; Raga,Adalton; Santos,Pedro César dos; Corrêa,Luiz de Souza; Ferrari,Josiane Takassaki.
Objetivou-se avaliar as características físicas e químicas de seis cultivares de pessegueiros sobre os porta-enxertos Okinawa e Umê. O trabalho foi desenvolvido no Pólo Regional Alta Sorocabana-APTA, Presidente Prudente-SP, em 2004/2006. Foram avaliados a massa, comprimento, diâmetros sutural dos frutos, produção por planta, teor de sólidos solúveis (SS) e acidez titulável (AT). As avaliações permitiram concluir que os porta-enxertos influenciaram na massa dos frutos, tendo sobressaído o Umê, com frutos de maior massa média. Em 2006, ocorreu aumento significativo na produtividade de todas as cultivares, sobressaindo-se as cvs. Talismã e Doçura 2, com valores acima da média. A cv. Doçura 2 sobre 'Okinawa' destacou-se por reunir melhores características...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica L.; Qualidade; Produção; Ratio.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452008000400037

Effect of different digestible isoleucine/lysine ratios for broiler chickens
Provedor de dados: 96
Autores: Tavernari,Fernando de Castro; Lelis,Guilherme Rodrigues; Carneiro,Paulo Roberto de Oliveira; Vieira,Rodolfo Alves; Polveiro,Richard Costa; Luengas,Jorge Armando Prada; Rostagno,Horacio Santiago; Albino,Luiz Fernando Teixeira.
Two experiments were conducted to evaluate different digestible isoleucine/lysine ratios on diets for broiler chickens in the starter (7 to 21 days) and finishing (30 to 43 days) phases. For the tests, the experimental design was of randomized blocks with seven treatments (six different digestible isoleucine/lysine ratios and a control treatment) and eight repetitions of 25 and 20 birds (COBB males) per experimental unit in the starter and finishing phases, respectively. The diets met the requirements, except for isoleucine and lysine. To avoid excess lysine in the experimental diets, the digestible lysine content was calculated to be 87% and 89% of the recommended for the starter and finishing phases, respectively. The control treatment was adequate in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isoleucine; Lysine; Ratio; Requirement.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700020

Factors affecting the thermal activation of Neosartorya fischeri in pineapple and papaya nectars
Provedor de dados: 58
Autores: Slongo,Adriana Paula; Aragão,Gláucia Maria Falcão de.
In this research factors that influence the activation of Neosartorya fischeri ascospores (heating medium, temperature of production and age of the ascospores) were studied. The heating medium used was pineapple and papaya nectars at different ratios (ºBrix/acidity). Lower activation times were observed for the N. fischeri ascospores in pineapple and papaya nectars under the conditions of temperature and production age of 25ºC for 1 month and using ratios of the heating medium of 10 for pineapple nectar and 26 for papaya nectar. In these cases, the activation time was 5 minutes for the pineapple nectar and 10 minutes for the papaya nectar at 85ºC. For the ascospores produced at 35ºC over three months, heated in pineapple nectar at a ratio of 38 and in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascospores; Ratio; Neosartorya fischeri; Activation.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000300021

Oxidative stability of tilapia feeds containing Saccharomyces cerevisiae and Spirulina platensis
Provedor de dados: 65
Autores: Grassi,Thiago Luís Magnani; Sedlacek-Bassani,Juliana; Ponsano,Elisa Helena Giglio.
ABSTRACT:  The aim of this study was to evaluate the effect of the inclusion of microbial biomass on the oxidative rancidity of tilapia rations stored for 12 months. Treatments included a control diet and diets supplemented with either 0.01% vitamin E, 0.25 and 0.5% of Saccharomyces cerevisiae and 0.25 and 0.5% of Spirulina platensis. Experimental diets were stored in the dark inside plastic bags at room temperature (25 °C) for 12 months. The oxidative rancidity was measured as thiobarbituric acid reactive substances (TBARS). It was concluded that the inclusions of Spirulina platensis at 0.25% (1.734 ± 0.206) and 0.5% (1.629 ± 0.181) and Saccharomyces cerevisiae at 0.5% (1.459 ± 0.305) minimized the oxidative rancidity in comparation to control diet (2.843...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass; Lipid oxidation; Ratio; TBARS.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100652