Partial Derivatives
Mostrando 13-24 de 161 artigos, teses e dissertações.
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13. Prediction of Total Acid Number in Distillation Cuts of Crude Oil by ESI(-) FT-ICR MS Coupled with Chemometric Tools
Competitive adaptive reweighted sampling-partial least squares (CARS-PLS) and negative-ion mode electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI(-) FT-ICR MS) data were adopted to assess the total acid number (TAN) of crude oil distillation cuts. Two crude oil samples and 24 derivatives with TAN ranging from 0.20 to 0.
J. Braz. Chem. Soc.. Publicado em: 2017-09
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14. ALK-5 Inhibition: A Molecular Interpretation of the Main Physicochemical Properties Related to Bioactive Ligands
Activin-like kinase 5 (ALK-5) receptor represents an attractive object to treat cancer. Analyses on the quantitative structure-activity relationship were performed to explore the relationship between the molecular structure of 1,5-naphthyridine, pyrazole and quinazoline derivatives and the inhibition of the activin-like kinase 5. From a data set containing 5
J. Braz. Chem. Soc.. Publicado em: 2015-09
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15. Una Propuesta para el Análisis de las Prácticas Matemáticas de Futuros Profesores sobre Derivadas
In this paper, we present results obtained from the analysis of prospective high school teachers' mathematical practices about two tasks on derivatives. This analysis exemplifies the use and scopes of the notions of mathematical practices and configurations of objects and processes, provided by the Onto-Semiotic Approach (OSA) of mathematical knowledge, to c
Bolema. Publicado em: 2015-04
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16. Application of nonlocal elasticity and DQM to dynamic analysis of curved nanobeams
In this paper, a new numerical technique, the differential quadrature method (DQM) has been developed for dynamic analysis of the nanobeams in the polar coordinate system. DQ approximation of the required partial derivatives is given by a weighted linear sum of the function values at all grid points. A semicircular arch with small-scale effects is investigat
Lat. Am. j. solids struct.. Publicado em: 2014-10
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17. Chronic mucocutaneous candidiasis: a case with exuberant cutaneous horns in nipples
Chronic mucocutaneous candidiasis is a rare disorder characterized by persistent and recurrent infections by Candida due to changes in cellular immunity and may be associated with autoimmune endocrine disorders. It is refractory to the usual antifungal treatments, which merely control it with imidazole derivatives. This reports the case of a 50-year-old fema
An. Bras. Dermatol.. Publicado em: 2014-07
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18. Uma resenha sobre modelos de apreçamento de derivativos
Apresento aqui uma abordagem que unifica a literatura sobre os vários modelos de apreçamento de derivativos que consiste em obter por argumentos intuitivos de não arbitragem uma Equação Diferencial Parcial(EDP) e através do método de Feynman-Kac uma solução que é representada por uma esperança condicional de um processo markoviano do preço do der
Publicado em: 29/06/2012
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19. Zeolita em dietas de bovinos de corte / Zeolite in diets for beef cattle
The objective was to evaluate the effect of adding different levels of zeolite on the intake and total and partial apparent digestibility of nutrients, ruminal parameters (pH and ammonia nitrogen), production of microbial nitrogen compounds, microbial efficiency and blood parameters (glucose and urea) in the diet of beef cattle. The treatments consisted of t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2010
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20. Dynamic instability of imperfect laminated sandwich plates with in-plane partial edge load
Dynamic instability of laminated sandwich plates having inter-laminar imperfections with in-plane partial edge loading is studied for the first time using an efficient finite element plate model. The plate model is based on a refined higher order shear deformation plate theory, where the transverse shear stresses are continuous at the layer interfaces with s
Latin American Journal of Solids and Structures. Publicado em: 2010
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21. Estudo da degradação de hidrocarbonetos policíclicos aromáticos a partir da reação de fenton utilizando magnetitas dopadas com cobalto
The awareness regarding Polycyclics Aromatic Hydrocarbons (PAHs), petroleum derivatives, has been increasing over the years due to their toxic, carcinogenic and mutagenic characteristics. The increase on the use of petroleum and its derivatives as energy source has induced many accidents spilling liquid effluent in the environment, making harm to biota, incl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/03/2009
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22. Hidrocarbonetos policíclicos aromáticos (HPAS) em cachaça, rum, uísque e álcool combustível
The concentration of 15 polycyclic aromatic hydrocarbons (PAHs) in 57 samples of distillates (cachaça, rum, whiskey, and alcohol fuel) has been determined by HPLC-Fluorescence detection. The quantitative analytical profile of PAHs treated by Partial Least Square - Discriminant Analysis (PLS-DA) provided a good classification of the studied spirits based on
Química Nova. Publicado em: 2009
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23. Sobre a passagem do estudo de função de uma variável real para o caso de duas variáveis
Esta pesquisa foi desenvolvida com o objetivo de verificar as dificuldades e saberes manifestados por estudantes relativos à transição do estudo das funções de uma variável para o caso de duas, no que diz respeito às variáveis dependentes e independentes e à interdependência entre elas, ao domínio e o gráfico, à relação entre o gráfico do dom
Publicado em: 2008
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24. Caracterização parcial das reações de fotooxidação e eletrooxidação do dipiridamol e das subunidades de hemoglobina extracelular / Partial caracterization of dipydidamole fotooxidation and eletrooxidation reactions and partial caracterization of extracellular hemoglobin subunits
Dipyridamole (DIP), 2,6-bis(dietanolamina)-4,8-dipiperidinapirimida-[5,4-d] pirimidina) is known for its vasodilating and antiplatelet aggregation activity, exhibiting also a potent antioxidant effect, strongly inhibiting lipid peroxidation. In the present work, the quenching of singlet molecular oxygen, O2(1Δg), by dipyridamole, RA47 and RA25 was anal
Publicado em: 2008