Empirical Equations
Mostrando 13-24 de 103 artigos, teses e dissertações.
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13. The role of condensed tannins in ruminant animal production: advances, limitations and future directions
ABSTRACT Tannins represent one of the most abundant polyphenolic compounds in plants. Tannins exist as a multitude of chemically unique entities in nature. The most commonly occurring tannins are typically divided into two major classes based on chemical structure: hydrolysable (HT) or condensed tannins (CT). Hydrolysable tannins are esters of gallic or ella
R. Bras. Zootec.. Publicado em: 2017-12
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14. Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon
ABSTRACT This study estimated the reference evapotranspiration rate (ETo) for the Itacaiúnas River Watershed (IRW), Eastern Amazonia, and measured the accuracy of eight empirical equations: Penman-Monteith (PM), Priestley-Taylor (PT), Hargreaves and Samani (HS), Camargo (CAM), Thornthwaite (TH), Hamon (HM), Kharrufa (KF) and Turc (TC) using monthly data fro
An. Acad. Bras. Ciênc.. Publicado em: 26/10/2017
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15. IMPACT OF MANAGEMENT PRACTICES ON JOB SATISFACTION
ABSTRACT Purpose: 1. to evaluate the effect of five human resource management practices (HRMP) oriented towards results, employees, rigid systems, permanent recruitment of new markets, and open systems on job satis faction of employees; 2. to analyze whether perceptions of organizational justice act as mediators in such relationships. Originality/value: cl
RAM, Rev. Adm. Mackenzie. Publicado em: 2017-10
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16. Microbial growth models: A general mathematical approach to obtain μ max and λ parameters from sigmoidal empirical primary models
Abstract Empirical sigmoidal models have been widely applied as primary models to describe microbial growth in foods. In predictive microbiology, the maximum specific growth rate (µ max ) and the lag phase (λ) are the parameters of some models and have been considered as biological parameters. The objective of the current study was to propose mathematical
Braz. J. Chem. Eng.. Publicado em: 2017-04
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17. Solubility of 1-Adamantanamine hydrochloride in Six Pure Solvents between 283.15 K and 333.15 K
Abstract The solubility of 1-adamantanamine hydrochloride (1-AH) in ethanol, acetic acid, distilled water, N -methylpyrrolidone (NMP), N,N -dimethylformamide (DMF) and dimethylacetamide (DMAC) between 283.15 K and 333.15 K was measured using a laser monitoring observation technique. Results of these measurements were correlated with the NRTL equation and a s
Braz. J. Chem. Eng.. Publicado em: 2017-01
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18. A Dilatometric Study of the Influence of Residual Iron Content on the Annealing Behavior of Cartridge Brass
Solid solutions alloys may have their annealing behavior affected by solute concentration. Mathematical models assume complex equations with parameters of hard and tedious assessment making empirical tests rather necessary. This work evaluated the residual iron content (from ~100 ppm to ~600 ppm) influence on annealing of a cartridge brass. Dilatometry resul
Mat. Res.. Publicado em: 15/03/2016
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19. Predictive modeling of entry flow at rotary intersections in Akure, a developing city and capital of Ondo state, Nigeria
Abstract Predictive models for entry flow at rotary intersections in Akure - a developing city in Nigeria- have been developed. Data were collected at the intersections critical to traffic flow in the study area using a cine camera placed at a vantage point from the road sections during peak and off-peak periods in week days. Entry flow (qe) was modelled as
J. Transp. Lit.. Publicado em: 2015-04
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20. Mathematical modeling of microwave dried celery leaves and determination of the effective moisture diffusivities and activation energy
Celery (Apium graveolens L. var. secalinum Alef) leaves with 50±0.07 g weight and 91.75±0.15% humidity (~11.21 db) were dried using 8 different microwave power densities ranging between 1.8-20 W g-1, until the humidity fell down to 8.95±0.23% (~0.1 db). Microwave drying processes were completed between 5.5 and 77 min depending on the microwave power densi
Food Sci. Technol. Publicado em: 30/05/2014
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21. Models for estimating feed intake in small ruminants
This review deals with the most relevant limits and developments of the modeling of intake of sheep and goats reared intensively and extensively. Because small ruminants are normally fed ad libitum, voluntary feed intake is crucial in feeding tactics and strategies aimed at optimal animal production. The effects of genetic, neuroendocrine, hormonal, feed and
R. Bras. Zootec.. Publicado em: 2013-09
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22. Comparison between Neutron Diffraction measurements and numerical simulation of residual stresses of a Wire-Drawing process
In this work, a drawing processed was simulated to calculate forces and the resulting residual stresses in the material. The calculated residual stresses were compared with experimentally measured residual stresses by the Neutron Diffraction Method. The modeled process was the Wire Drawing. The necessary parameters to model the process were taken from an ind
Mat. Res.. Publicado em: 08/02/2013
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23. Uma análise do emprego no setor da construção civil nos estados do nordeste brasileiro: qualidade do emprego formal e o retorno da educação
The Construction Industry has gained prominence on the national scene due to its ability to generate employment, and absorb much of the disqualified labor. On that perspective, this research aims to measure the quality of formal employment and quantify the impact of schooling on income of Construction Industry workers in the states of Northeast Brazil. In or
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2012
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24. Desempenho de modelos de estimativa da radiação solar na região do Triângulo Mineiro / Performance of methods for estimating solar radiation in the region of Triângulo Mineiro
A radiação solar é determinante sobre o comportamento climático global e os fenômenos meteorológicos, sendo os dados exigidos em muitas aplicações e nas diferentes áreas de estudos. Em estudos agronômicos, o saldo de radiação ou de energia representa a quantidade de energia que está disponível para os processos de evapotranspiração, fotossín
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012