Buscar
Mostrando ítems 41-50 de 869
Indirect cytotoxicity of a 35% hydrogen peroxide bleaching gel on cultured odontoblast-like cells
(2009-12-01)
The aim of this study was to evaluate the trans-enamel and trans-dentinal effects of a 35% hydrogen peroxide (H2O2) bleaching gel on odontoblast-like cells. Enamel/dentin discs obtained from bovine incisors were mounted ...
Electrocatalysis of hydrogen evolution reaction on Pt electrode surface-modified by S-2 chemisorption
(Elsevier B.V., 2007-04-01)
Kinetic studies of hydrogen evolution reaction (HER) at the surface of Pt in alkaline conditions, reported in this paper, show that electrocatalytic activity is enhanced after adsorption of S-2 ions. EIS and steady-state ...
Hydrogen production and TOC reduction from gasification of lactose by supercritical water
(International Journal of Hydrogen Energy, 2018)
pH-changes during intracoronal bleaching: An in vivo study
(2011-03-01)
Objectives: This study aimed to measure pH changes during 14 days intracoronal bleaching with hydrogen peroxide/sodium perborate and carbamide peroxide/sodium perborate. Materials and methods: Twenty patients presenting ...
SURFACE EFFECTS IN THE HYDROGEN EVOLUTION REACTION ON NI-ZN ALLOY ELECTRODES IN ALKALINE-SOLUTIONS
(Electrochemical Soc Inc, 1995-10-01)
Hydrogen evolution reaction was studied on Ni-Zn (25% of Ni before leaching) in 1 M NaOH at 25 degrees C. These electrodes were characterized by very low Tafel slopes of 67 mV dec(-1). Other techniques used included potential ...
Hydrogen embrittlement in an AISI 1045 steel component of the sugarcane industry
(Pergamon-Elsevier B.V. Ltd, 2009-01-01)
This paper will present a failure analysis of a chain component, manufactured with AISI 1045 steel and used for sugarcane transport. During the fabrication process, this component is submitted to induction hardening, just ...
Inhibitory effect of silibinin on tumour necrosis factor-alpha and hydrogen peroxide production by human monocytes
(Taylor & Francis Ltd, 2010-01-01)
Silibinin is a chemically defined flavonoid and the main active component of silymarin, a polyphenolic complex from Silybum marianum, which has anti-inflammatory, hepatoprotective and anticarcinogenic properties. Monocytes ...
Potential and costs for the production of electrolytic hydrogen in alcohol and sugar cane plants in the central and south regions of Brazil
(Pergamon-Elsevier B.V. Ltd, 2008-12-01)
This project verified the potential for the production of hydrogen via water electrolysis by using the exceeding electrical energy resultant from alcohol and sugar plants that use sugar cane bagasse as fuel. The studies ...
Inhibition of hydrogen peroxide, nitric oxide and TNF-alpha production in peritoneal macrophages by ethyl acetate fraction from Alchornea glandulosa
(Pharmaceutical Soc Japan, 2005-09-01)
The effects of Alchornea glandulosa ethyl acetate fraction (AGF) on hydrogen peroxide (H2O2), nitric oxide (NO) and tumor necrosis factor-alpha (TNF-alpha) production in peritoneal macrophages activated with lipopolysaccharide ...