Sulfur
Mostrando 13-24 de 1879 artigos, teses e dissertações.
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13. Lignocellulosic Residues from the Brazilian Juice Processing Industry as Novel Sustainable Sources for Bioenergy Production: Preliminary Assessment Using Physicochemical Characteristics
This work aims to investigate the energy-related characteristics of apple bagasse, orange bagasse and cashew-apple bagasse to identify their potential as bioenergy feedstocks. For this, a detailed characterization was performed, including proximate analysis, ultimate analysis, atomic molar ratio, heating values, chemical composition, bulk density, bioenergy
J. Braz. Chem. Soc.. Publicado em: 2020-09
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14. AN ELECTROCHEMILUMINESCENCE SANDWICH BIOSENSOR FOR THE DETECTION OF LIPOPOLYSACCHARIDE
A novel electrochemiluminescence (ECL) biosensor for the determination of lipopolysaccharide (LPS), a biomarker of endotoxemia, was designed. The nanoprobe (Ru1@SiO2-peptide) with a specific peptide (CIGKLHSAGK) labeled with a carboxyl functionalized Ru@SiO2 (Ru1@SiO2) was prepared by the acylation reaction. The ECL peptide biosensor was obtained by the stro
Quím. Nova. Publicado em: 2020-06
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15. Effects of nitrogen supplementation on Saccharomyces cerevisiae JP14 fermentation for mead production
Abstract Honey must supplementation is necessary for mead production due to the deficiency in nitrogen materials in this feedstock, despite its high fermentative sugar content. The nitrogen limitation can halt or slow fermentation and lead to the production of unpleasant sensorial compounds, such as sulfur derivatives. The yeast JP14, a Saccharomyces cerevis
Food Sci. Technol. Publicado em: 2020-06
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16. PREPARATION AND SIMULATION OF THE ON-LINE SiO2/S COATING FOR COKING INHIBITION IN THE INDUSTRIAL CRACKING FURNACE
Abstract Coke formation inside radiant coils is one of the main problems during thermal cracking of hydrocarbons. The on-line preparation of the coating for coking inhibition is a promising technology because it provides more flexibility to the operators on site. The SiO2/S coating was prepared on the inner surface of coils in an 8-year-served GK-VI industri
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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17. Outbreak of enzootic ataxia in goats and sheep in the state of Bahia
RESUMO: Objetivou-se com esse estudo descrever pela primeira vez os aspectos clínico-epidemiológicos, laboratoriais e patológicos de diferentes formas de ataxia enzoótica em cabritos e borregos no estado da Bahia, bem como propor um tratamento oral emergencial com sulfato de cobre de forma individualizada para neonatos. Foram estudados três surtos de at
Pesq. Vet. Bras.. Publicado em: 10/01/2020
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18. SEPARATION OF SULFUR-CONTAINING COMPOUNDS FROM DIESEL BY OXIDATION FOLLOWED BY SOLVENT EXTRACTION IN A SINGLE DROP COLUMN
Abstract Oxidative desulfurization (ODS) is an attractive complementary or alternative process for the hydrodesulfurization (HDS) process due to advantages such as mild operating conditions. In the ODS process, the sulfur-containing compounds are oxidized first to polar sulfoxide and sulfone products and then these polar compounds are separated using solvent
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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19. Investigation of Physicochemical Characteristics of Heavy, Medium and Blend Crude Petroleum on Corrosion Resistance of AISI 1020 Carbon Steel
This work investigates the influence of the physicochemical characteristics of heavy (17.5 °API), medium (28.3 °API) and blend (50% heavy + 50% medium) crude petroleum on corrosion of AISI 1020 carbon steel at 25.0 ± 1.0°C. The corrosion resistance of steel was analyzed by electrochemical impedance spectroscopy, potentiodynamic polarization, and scanning
Mat. Res.. Publicado em: 05/12/2019
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20. Three Main Causes of Homocystinuria: CBS, cblC and MTHFR Deficiency. What do they Have in Common?
Abstract Genetic homocystinurias are a group of inborn errors of metabolism that result in the massive excretion of homocysteine (Hcy) in the urine due to Hcy accumulation in the body, usually causing neurological and cardiovascular complications. The three most frequent causes are classical homocystinuria [deficiency of cystathionine beta-synthase (CBS)], m
J. inborn errors metab. screen.. Publicado em: 05/12/2019
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21. Synthesis, characterization and antimicrobial activity of Cr (III), Co (II) and Ni (II) complexes with 2-thiazoline-2-tiol derivative ligands against bacteria and yeasts of clinical importance
Abstract: Four novel Cr (III), Co (II) and Ni (II) complexes with 2-thiazoline-2-tiol derivative ligands were synthesized and characterized using elemental, physiochemical, and spectroscopy analytical methods. The results showed the formation of ligands coordinated by sulfur atoms of the C = S bond to the L1 ligand and by the sulfur atom of the C-S bond and/
An. Acad. Bras. Ciênc.. Publicado em: 28/11/2019
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22. Long-term behavior of mortars produced with sulfide-bearing aggregates
ABSTRACT The variety of sulfides (inorganic compounds formed by combining sulfur with a metal element) presented in earth crust is not small, which makes it difficult to avoid the use of sulfide-bearing aggregates in the concrete, especially in places where another source of material is non-existent or economically impracticable, as is the case of dams. With
Matéria (Rio J.). Publicado em: 25/11/2019
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23. Forma urbana e poluição atmosférica: impactos na cidade do Rio de Janeiro
Resumo Cidades crescem em importância como polos de concentração de população, assim como em seu papel potencial como fontes de poluição atmosférica. Este artigo investiga possíveis impactos de aspectos da forma urbana nas concentrações desses contaminantes. Dado que esse é um tema ainda incipiente em estudos urbanos no Brasil, a pesquisa traz um
urbe, Rev. Bras. Gest. Urbana. Publicado em: 21/11/2019
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24. SYNTHESIS OF MORPHOLINE-BASED IONIC LIQUIDS FOR EXTRACTIVE DESULFURIZATION OF DIESEL FUEL
Abstract Extractive desulfurization with ionic liquids has attracted significant attention from a growing number of scientists due to the current environmental restrictions on fuel. Protic ionic liquids (PILs) were synthesized via equimolar neutralization of morpholine and formic-based compounds. The obtained PILs were characterized by Fourier transform infr
Braz. J. Chem. Eng.. Publicado em: 30/09/2019