Chloride Ions
Mostrando 13-24 de 399 artigos, teses e dissertações.
-
13. Experimental protocol for metabolic acidosis induction by intravenous administration of hydrochloric acid in sheep
RESUMO O objetivo deste estudo foi avaliar a magnitude e a duração das alterações sanguíneas e urinárias, bem como os efeitos colaterais da acidose hiperclorêmica induzida por administração intravenosa de ácido clorídrico, em ovinos. Foram utilizadas cinco ovelhas mestiças, adultas, sadias, com peso médio de 44±2,9kg. A solução de ácido clor
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2019-02
-
14. 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
-
15. Fracture Behavior and Fatigue Performance of Inconel 625
Inconel 625 is a nickel-based highly-resistant superalloy widely used in aerospace components, in the nuclear industry, and especially in the maritime industry. Materials such as Inconel 625 have been widely used in oil exploration of Brazilian pre-salt layers due to their excellent resistance to corrosion under tension, pitting and crevice corrosion by chlo
Mat. Res.. Publicado em: 25/06/2018
-
16. Star anise extracts modulation of reproductive parameters, fertility potential and DNA fragmentation induced by growth promoter Equigan in rat testes
ABSTRACT Equigan is an anabolic steroid that has been developed for veterinary use and derived from endogenous sex hormone testosterone that plays a key role in the development of male reproductive tissue as well as in puberty and spermatogenesis. The current study is aimed to investigate the possible prophylactic effect of star anise extracts (SAE) on the t
Braz. J. Pharm. Sci.. Publicado em: 07/06/2018
-
17. AVALIAÇÃO DOS RESÍDUOS GERADOS DURANTE A DESTRUIÇÃO DE PCBS PELO PROCESSO CATALISADO POR BASE
There are many processes capable of decontamination of polychlorinated biphenyls in several matrixes. The set of inputs, materials, operation conditions and efficiencies are wide. The base catalyzed dechlorination process shows application potential in great scale, mainly due mild chemical reaction conditions and low cost raw materials. The KPEG is a familia
Quím. Nova. Publicado em: 2018-06
-
18. A Novel Sensitive Bulk Optode Based on 5-Br Salophen as an Ionophore for Determination of Zinc Ion in Real Samples
An optical sensing film was fabricated for sensitive determination of zinc ion in aqueous solutions. The optical sensor was prepared by synthesized ionophore, 5-Br salophen, dioctyl sebacate (DOS) as a plasticizer, sodium tetraphenyl borate (NaTPB) as a lipophilic anionic additive in a poly(vinyl chloride) membrane. The optode response is based on the cation
J. Braz. Chem. Soc.. Publicado em: 2018-03
-
19. Catalytic hydrogen generation from NaBH 4 /H 2 O system: effects of catalyst and promoters
Abstract A hydrogen generation system based on NaBH4 hydrolysis is affected by the nature of the catalyst and catalyst promoter. Various catalyst promoters such as Al2O3 nanoparticles, Al2O3 particles, ZrO2 sand, SiO2, MMT clay, CNT and zeolite are compared with respect to hydrogen generation (HG) and hydrogen generation rate (HGR). The highest HG and HGR ar
Braz. J. Chem. Eng.. Publicado em: 2018-01
-
20. DETERMINAÇÃO CONDUTOMÉTRICA DE CLORIDRATO DE TETRACICLINA EM FORMULAÇÕES FARMACÊUTICAS
In the present article it is described, a simple, precise, rapid and low-cost conductometric titration of tetracycline hydrochloride in pharmaceutical formulations using silver nitrate as titrant. The method is based on the precipitation of chloride ions derived from tetracycline hydrochloride with silver ions, yielding silver chloride precipitate and the co
Quím. Nova. Publicado em: 2017-09
-
21. Effect of the chemical attack on the properties of cimentititous composites with partial substitution of ash from sugar cane bagasse in natura
ABSTRACT Seeking the reutilization of waste from agriculture and urban sources, studies have presented an option in the inclusion of such waste into new low-cost materials that are environmentally viable. One possibility is the reutilization of sugarcane bagasse ashes (SBA), the final waste in the productive process of the Brazilian alcohol sector. In additi
Matéria (Rio J.). Publicado em: 20/07/2017
-
22. Synthesis of Submicrometer Calcium Carbonate Particles from Inorganic Salts Using Linear Polymers as Crystallization Modifiers
In this study, we report the synthesis of submicrometer calcium carbonate particles using the simplest approach of mixing solutions of calcium chloride and ammonium carbonate inorganic precursors in the presence of crystallization modifiers. Instead of the typical crystallization of CaCO3 into large calcite crystals with rhombohedral morphology, very small u
J. Braz. Chem. Soc.. Publicado em: 2017-04
-
23. MODELING OF THE SOLVENT EXTRACTION EQUILIBRIUM OF URANIUM (VI) SULFATE WITH ALAMINE 336
Abstract The present study investigated the solvent extraction of uranium from sulfate acid solutions using Alamine 336 as an extractant dissolved in commercial kerosene Exxsol D-100 and 5% v/v of tridecanol as a modifying agent at room temperature (25±2) ºC and an aqueous/organic volumetric ratio of unity. Experiments were carried out at typical concentra
Braz. J. Chem. Eng.. Publicado em: 2017-01
-
24. Treatment of Sanitary Landfill Leachate by Photo-Fenton Process: Effect of the Matrix Composition
In this study it was evaluated the role of the composition of sanitary landfill leachate on the removal of dissolved organic carbon (DOC) by photo-Fenton process. The composition of the matrix (high turbidity and color, as well as presence of inorganic ions sulfate and chloride) does not reduce the efficiency of DOC removal by photo-Fenton reactions, but inf
J. Braz. Chem. Soc.. Publicado em: 2016-12