Tris Solution
Mostrando 1-12 de 116 artigos, teses e dissertações.
-
1. Estudio de las propiedades, estructurales, morfológicas y ópticas de nanopartículas de Cr2O3 sintetizadas por procesos de combustión de un solo paso y diferentes combustibles
ABSTRACT This research presents a novel one–step solution combustion synthesis to obtain nano-structured Cr2O3 from chrome nitrate solution and one fuel such as aspartic acid (Asp) or Lysine (Lys), or Autor Restrihydroxymethylaminomethane (Tris) or ethylenediaminetetraacetic acid (Edta). Once obtained, the ashes were calcined at 500°C. The powders were ch
Matéria (Rio J.). Publicado em: 16/09/2019
-
2. Biological Synthesis of Selenium Nanoparticles and Evaluation of their Bioavailability
ABSTRACT Nanoparticles due to their unique properties have attracted more attention and their bacterial biosynthesis is more favorable because is environmental friendly and the size and yield of nanoparticles can be optimized. The aim of the present study was biosynthesis of Selenium nanoparticles using Bacillus cereus. For this purpose, bacterial culture wa
Braz. arch. biol. technol.. Publicado em: 14/06/2018
-
3. SAIS DE TETRAFENILFOSFÔNIO E TRIS(1,10-FENANTROLINA)FERRO(II) DE COMPLEXOS ANIÔNICOS DE DIBUTILESTANHO(IV) COM DITIOCARBIMATOS: SÍNTESE, CARACTERIZAÇÃO E ATIVIDADE ANTIFÚNGICA
Six new salts of organometallic complexes of tin(IV) with the general formulae: (Ph4P)2[Sn(Bu)2(RSO2N=CS2)2] and [Fe(phen)3][Sn(Bu)2(RSO2N=CS2)2] [Ph4P = tetraphenylphosphonium, R = CH3 (1), C2H5 (2) and C4H9 (3); Fe(phen)3 = tris(1,10-phenanthroline)iron(II), R = CH3 (4), C2H5 (5) and C4H9 (6)] were synthetized from potassium dithiocarbimates (RSO2N=CS2K2.H
Quím. Nova. Publicado em: 2016-06
-
4. Determination of Aspirin Using Chemiluminescence System of Tris(1,10 phenanthroline)Ruthenium(II)-Cerium(IV)
A new chemiluminescence (CL) method has been proposed for the simple determination of aspirin (acetylsalicylic acid, ASA). The method is based on the enhancement effect of ASA in the CL reaction of tris(1,10 phenanthroline)ruthenium(II), Ru(phen)32+, with cerium(IV) (CeIV) in acidic medium. Under optimum conditions, the CL intensity was proportional to the c
J. Braz. Chem. Soc.. Publicado em: 2016-03
-
5. Influence of the Lipid Phase Removal on the Quantification of Cu, Fe and Zn Bound to Proteins from Golden Flaxseed (
Linum usitatissimum L .)The analysis of metals bound to proteins requires careful sample preparation. Experimental procedures involved in this area should be developed aiming to retain the metal species bound to the protein structure. Some pre-fractionation steps are commonly used and in many cases it is necessary to disrupt the lipid-protein interaction by performing lipid remo
J. Braz. Chem. Soc.. Publicado em: 2015-08
-
6. Proteolytic activity in the adult and larval stages of the human roundworm parasite Angiostrongylus costaricensis
Angiostrongylus costaricensis is a nematode that causes abdominal angiostrongyliasis, a widespread human parasitism in Latin America. This study aimed to characterize the protease profiles of different developmental stages of this helminth. First-stage larvae (L1) were obtained from the faeces of infected Sigmodon hispidus rodents and third-stage larvae (L3)
Mem. Inst. Oswaldo Cruz. Publicado em: 2012-09
-
7. Effect of adhesive system and application strategy on reduction of dentin permeability
This study evaluated the effect of adhesive systems and application strategies on dentin hydraulic conductance (HC). The buccal enamel was removed from bovine incisors to simulate laminate cavity preparations. After removing the roots and the coronal pulp, the buccal dentin was treated with EDTA solution (0.5 M) for 5 minutes, rinsed, ultrasonicated for 12 m
Braz. oral res.. Publicado em: 14/08/2012
-
8. Degradação de 2,4-diclorofenol em solução aquosa por meio de processo fotoquímico solar. / Degradation of 2,4-dichlorophenol in aqueous solution by means of solar photochemical process.
2,4-dichlorophenol (2,4-DCF), the model pollutant selected in this work, is a compound used in the production of pesticides, herbicides, antiseptics, and commonly found in industrial wastewaters. It is considered a priority pollutant due to its high toxicity and high persistence in the environment. This study investigated the degradation of 2,4-DCF in a tubu
Publicado em: 2011
-
9. Redução do Oxigênio Molecular por [Fe(Bipy)3]/C: influência do suporte e do tratamento térmico na atividade catalítica. / Reduction of the Molecular Oxygen for [Faith (Bipy) 3] /C: influence of the support and the thermal treatment in the catalytic activity.
This work consisted in the preparation and study of catalytic activity for reduction of molecular oxygen (ROM) based on head-treated coordination compounds with nitrogenated ligands, impregnated on carbon nanosupports (nanotube - NTC, and nanoparticles - Vulcan). The following ions complexes [Fe(bipy)3]2+ and [Fe(TPTZ)2]2+ (2,2 -bipyridine and 2 ,4,6-tris (2
Publicado em: 2011
-
10. Adição de ringer lactato, citrato de sódio 2,92% e solução tris em sêmen caprino descongelado / Addition of Ringer lactate, sodioum citrate and 2,92% in tris solution thawed goat sêmen
O experimento foi realizado no Setor de Caprinocutura do Departamento de Zootecnia da Universidade Federal de Viçosa, no município de Viçosa-MG. O objetivo foi adicionar, no descongelamento de sêmen caprino, as soluções de Ringer com lactato, citrato de sódio 2,92% e solução TRIS, para verificar a estabilidade e persistência da motilidade e vigor d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/07/2010
-
11. AMPEROMETRIC SENSOR BASE OF AN IMPRESSION OF POLYMER MOLECULAR PROTOPORPHYRIN IX WITH IRON FOR THE DETERMINATION OF 4-AMINOPHENOL / SENSOR AMPEROMÉTRICO A BASE DE UM POLÍMERO DE IMPRESSÃO MOLECULAR COM PROTOPORFIRINA IX DE FERRO PARA A DETERMINAÇÃO DE 4-AMINOFENOL
This work presents an analytical study on determination of 4-aminophenol (4-APh) with a system based on molecurlaly imprinted polymer (MIP) and iron protoporphyrin IX as biomimetic sensor of the peroxidase enzyme. The MIP synthesis was performed by the precipitation method and the analytical determinations by amperometric measurements with a glassy carbon el
Publicado em: 2010
-
12. Complexos de metais de transição para o desenvolvimento de novas drogas neuroativas
The biological role and pharmacological utility of histamine and 4-aminopyridine in the physiological medium has led us to the development of luminescent and photolabile metal-histamine and metal-4-aminopyridine donor that release histamine when exposed to visible light aim both research tools and therapeutic agents. In this work, we report on the synthesis,
Publicado em: 2010