Chlorides
Mostrando 13-24 de 135 artigos, teses e dissertações.
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13. Synthesis of some novel pyrimidine, thiophene, coumarin, pyridine and pyrrole derivatives and their biological evaluation as analgesic, antipyretic and anti-inflammatory agents
Pyrimidine derivative 3 was afforded through the reaction of compound (1) with 5-ureidohydantion (2). Product 3 underwent a cyclization to produce fused pyrimidine derivative 7, although the latter product 7 was synthesized through one step via the reaction of compound (1) with 5-ureidohydantion (2) using another catalyst. Compound 3 was oriented to react wi
Braz. J. Pharm. Sci.. Publicado em: 08/04/2019
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14. ENROFLOXACINO DE RÁPIDA AÇÃO EM ASSOCIAÇÃO A FLUIDOTERAPIA ENDOVENOSA E ORAL NO TRATAMENTO DE DIARREIA NEONATAL BOVINA
Resumo O objetivo deste trabalho foi avaliar a ação do enrofloxacino de rápida ação e sua associação com outros tratamentos como, suporte por via oral ou endovenosa em bezerras leiteiras com diarreia. Foram utilizados 56 animais, divididos em grupos: Grupo SADIAS (n=5), Grupo Antibiótico (ATB; n=15), Grupo Antibiótico + Suporte Endovenoso (ATB+SE; n
Ciênc. anim. bras.. Publicado em: 18/03/2019
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15. Synthesis and in vitro anti-HIV-1 evaluation of some N-arylsulfonyl-3-formylindoles
As our ongoing work on research of anti-HIV-1 inhibitors, fifteen N-arylsulfonyl-3-formylindoles (3a-o) were designed and prepared through two step synthetic route. Firstly, 3-formylindoles (2a-c) were synthesized via the Vilsmeier-Haack reaction. Subsequently, treatment of 2a-c with the appropriate arylsulfonyl chlorides led to the corresponding target comp
Braz. J. Pharm. Sci.. Publicado em: 29/11/2018
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16. Behaviour of cementitious matrices subjected to the combined action of chloride ions and carbonation
ABSTRACT Carbonation and chloride action are the two leading causes of degradation in reinforced concrete structures. Despite the combined action of these two mechanisms being a reality, there is little research on the effect of this combination in cementitious matrices. Furthermore, the incorporation of fly ash in cementitious matrices has been frequently u
Matéria (Rio J.). Publicado em: 18/10/2018
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17. Estudio de la composición de una fase gaseosa por FTIR. Cloración de MoO3 en presencia de carbón de fructosa
ABSTRACT Chlorination and carbochlorination studies available in the literature were conducted using gravimetric and thermogravimetric techniques. These studies were focused on the overall reaction through analysis of the condensed reaction products, thermodynamic calculations and mass change generated during the reaction. The composition of the gaseous phas
Matéria (Rio J.). Publicado em: 19/07/2018
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18. The Dichromate Method versus the Photoelectrochemical Method: the Synergistic Influence of Turbidity and Chlorides on Chemical Oxygen Demand Analysis
This paper compares the dichromate method with the photoelectrochemical method (PeCOD), with regards to the influence of chloride and turbidity with chemical oxygen demand (COD) determination. Whereas the upper limits of chloride concentration are well established for both techniques, the influence of turbidity and the combined interference of underdosing ch
J. Braz. Chem. Soc.. Publicado em: 2018-03
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19. Two mechanisms of oral malodor inhibition by zinc ions
Abstract Objectives The aim of this study was to reveal the mechanisms by which zinc ions inhibit oral malodor. Material and Methods The direct binding of zinc ions to gaseous hydrogen sulfide (H2S) was assessed in comparison with other metal ions. Nine metal chlorides and six metal acetates were examined. To understand the strength of H2S volatilization i
J. Appl. Oral Sci.. Publicado em: 18/01/2018
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20. Corrosion resistance of rolled and rerolled super martensitic steel in media containing chlorides and hydrogen sulfide
ABSTRACT In the oil and gas industry, super matensitic steels have been used primarily in the manufacture of seamless steel pipe for use in drilling oil and gas. The objective of this work is to evaluate the corrosion resistance of rolled and rerolled super martensitic steels in electrolytes of aqueous solution of NaCl 35 g/L, and aqueous solution of NaCl 12
Matéria (Rio J.). Publicado em: 02/10/2017
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21. Rheological Characterization of Bentonite Dispersions with Xanthan for Oil Well Drilling Fluids
Shear tests using a coaxial cylinders viscometer were performed in order to determine the rheological and thixotropic properties of xanthan gum dispersions with sodium bentonite in the presence of high salt concentrations of sodium and calcium chlorides. The dispersions rheology with different temperatures and concentrations of NaCl, CaCl2 and xanthan gum we
Mat. Res.. Publicado em: 05/06/2017
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22. Síntese de BaTIO3 e SrTIO3 pelo método hidrotermal assistido por micro-ondas utilizando anatase como precursor de titânio
In this work barium titanate (BT) and strontium titanate (ST) were prepared by Microwave-Assisted Hydrothermal (MAH) method, using a Ti precursor different from those shown in the literature and various concentrations (1, 3 e 6 mol L-1) of KOH mineralizer. As a titanium precursor, an anatase complex with hydrogen peroxide were used. For the precursors of bar
Quím. Nova. Publicado em: 2017-02
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23. PdCl2 Immobilized in Polyacrylamide: a Low Cost and Eco-Friendly Catalyst for Suzuki-Miyaura Reactions
PdCl2 immobilized in polyacrylamide (PAM), named Pd/PAM, produced at an extremely low cost, was found to be an efficient catalyst for Suzuki-Miyaura cross-coupling reactions. Iodo- and bromoarenes may couple with phenylboronic acid under eco-friendly conditions (i.e., phosphine-free and with ethanol as the solvent) to give excellent product yields. Aryl chlo
J. Braz. Chem. Soc.. Publicado em: 2016-04
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24. ESTUDO DA GLICOSILAÇÃO DO CICLO-HEXANOL COM DIFERENTES DERIVADOS DE D-GLICOSAMINA E PROMOTORES DE GLICOSILAÇÃO PELO MÉTODO DE KOENIGS-KNORR
We report herein a study on the glycosylation of cyclohexanol with four D-glucosamine-based peracetylated glycosyl chlorides bearing different substituents at C-2 and three glycosylation promoters, silver carbonate, silver triflate and mercury II chloride/mercury II oxide, by the Koenigs-Knorr method. Under the conditions studied, glycosylation was successfu
Quím. Nova. Publicado em: 2016-01