Volatility Analysis
Mostrando 1-12 de 82 artigos, teses e dissertações.
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1. Synthesis of a Homologous Series of Trialkyl Arsines (C3-C12) and Applications of Arsenic Triiodide as a Synthetic Precursor
This work presents some modifications in the post-synthetic processing for a classical arsenic reagent: AsI3. In comparison with the widely used analog, the trichloride, arsenic triiodide presents several advantages such as low toxicity, air stability, and low volatility. It was used as a synthetic precursor in the preparation of a variety of arsenic(III) de
J. Braz. Chem. Soc.. Publicado em: 2021-04
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2. Análise de opções reais aplicada na diversificação da produção rural no estado do Paraná
Resumo O presente artigo tem o objetivo de analisar a contribuição do uso da Teoria das Opções Reais (TOR) na análise de investimentos da diversificação da produção rural no estado do Paraná. É uma pesquisa exploratória, com procedimento técnico documental, de caráter quantitativo, utilizando fontes primárias e secundárias, em corte transvers
Rev. Econ. Sociol. Rural. Publicado em: 15/07/2019
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3. Saudade do partido: referencias nostálgicas entre militantes de las bases de sustentación de los gobiernos argentinos y brasileros (2003-2015)
Abstract The paper examines and compares the presence of nostalgic references between militants of government-supporting organizations in Brazil and Argentina since the inauguration of Lula and Kirchner. As part of a wider research on grassroots activism within governments' political bases in both countries, the phenomenon of nostalgia observed in this study
Rev. Sociol. Polit.. Publicado em: 2017-06
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4. Analysis and extension of the Furter equation, and its application in the simulation of saline extractive distillation columns
ABSTRACT Simulation of saline extractive distillation columns is a difficult task owing to the high nonlinearity of the rigorous models that represent these systems. The use of simple models to obtain initial estimates of equilibrium compositions may improve the stability and rate of convergence. One of the simplest models to study the vapor-liquid equilibri
Braz. J. Chem. Eng.. Publicado em: 2017-04
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5. What Accounts for Plural Forms of Governance Structure in the Same Industry or Firm - The Case of the Brazilian Electricity Industry
Abstract Governance structures are described as a spectrum with the market and vertical integration as its poles. During the past decades, the theoretical and empirical work aligned with New Institutional Economics sought to understand the factors that determine which transactions will run through the market and which will run within the firms. However, the
BAR, Braz. Adm. Rev.. Publicado em: 13/02/2017
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6. Problemas en el análisis de metilsiloxanos volátiles (VMS): origen y soluciones
Volatile methylsiloxanes (VMS) are pollutants widely distributed in the environment due to its extensive uses and high volatility. The analysis of these compounds is commounly performed by gas chromatography - mass spectrometry (GC-MS), and it is dificult due to the presence of background contamination and volatile losses. Different preconcentration techniqu
Quím. Nova. Publicado em: 2017-02
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7. USE OF STOCHASTIC VOLATILITY MODELS IN THE VARIABILITY OF PASSENGERS AND CARGO TRANSPORT IN SOME AIRPORTS IN SÃO PAULO STATE, BRAZIL
ABSTRACT The proposed study is related to the identification of important factors that determine the feasibility of regional airport hubs in São Paulo State, Brazil. This way, new perspectives are created to map airports in this region based on economic criteria of operations and volumes. The study is based on statistical data analysis of time series relate
Pesqui. Oper.. Publicado em: 2017-01
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8. Does Size Matter? Electoral Performance of Small Parties in Brazil
What is the impact of small parties on electoral outcomes? This articles aims at contributing to the literature on party systems by proposing a new method to classify political parties. The methodology is applied to Brazil by focusing on the description of the election results of small parties. Cluster analysis is employed to classify political party size ba
Bras. Political Sci. Rev.. Publicado em: 10/05/2016
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9. Determination of Pesticides in Soil Using a Hyphenated Extraction Technique
A new method for the extraction of pesticide residues from soil was developed, optimized, validated and applied to real samples. The technique consisted of combining single-drop microextraction and solid-liquid extraction with low temperature partitioning (SLE/LTP-SDME) followed by analysis using gas chromatography with electron capture detection (GC/ECD). T
J. Braz. Chem. Soc.. Publicado em: 2015-09
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10. Simultaneous Determination of Environmental Contaminants with Different Volatilities in Tap Water Samples Using a New Approach to Single-Drop Microextraction Procedure
A new single-drop microextraction approach is proposed for the extraction of compounds with a wide range of volatilities from tap water samples with separation/detection by gas chromatographymass spectrometry. This new microextraction mode is called direct immersion-headspace-single drop microextraction (DI-HS-SDME). Trihalomethanes (THMs), hydrocarbons w
J. Braz. Chem. Soc.. Publicado em: 2015-08
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11. Properties and controlled release of chitosan microencapsulated limonene oil
Chitosan microcapsules containing limonene essential oil as active ingredient were prepared by coacervation using three different concentrations of NaOH (0.50, 1.00, 1.45 wt%) and fixed concentrations of chitosan and surfactant of 0.50 wt%. The produced microcapsules were fully characterized in their morphology and chemical composition, and the kinetic relea
Rev. bras. farmacogn.. Publicado em: 2014-12
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12. Análise de volatilidade spillover entre commodities agrícolas e o mercado de energia: um estudo do mercado de etanol brasileiro / Analysis of volatility spillover between agricultural commodities and energy market: a market study of Brazilian ethanol
O objetivo desta dissertação foi avaliar a possível ocorrência de contágio de volatilidade no mercado de energia combustível, com foco em etanol, analisando commodities agrícolas e de energia. São examinados dois cenários. O Cenário I teve como objetivo identificar a presença de volatilidade spillover entre os preços futuros de petróleo e milho,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/05/2012