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Improved brushing durability of titanium dioxide coating on polymethylmethacrylate substrate by prior treatment with acryloxypropyl trimethoxysilane-based agent for denture application
Brushing wear Surface morphology Titanium dioxide
2010/11/26
The purpose of this study was to determine whether the brushing durability of a titanium dioxide coating on a polymethyl methacrylate (PMMA) substrate was improved by prior treatment with an acryloxyp...
Comparison between the essential oil and supercritical Carbon Dioxide extraction of Mentha Piperita L.cultivated in Iran
Mentha piperita Labiatae SFE Menthol Menthone
2010/1/6
The chemical compositions of the essential oils and the volatile concentrate of Mentha piperita L. (Labiatae) obtained by supercritical carbon dioxide extraction (SFE) at 35°C and 100 atm were compare...
A SURVEY ON TEHRAN ATMOSPHERIC POLUTANTS PARTICULATE MATTER & SULFUR DIOXIDE
Atmosphere Dust fall Index of particles
2009/12/30
Particulate matters commonly found dispersed in the atmosphere are composed of a large variety of substances. Dustfall is the usual index of particles in the size range greater than 10 M. Two Semi aut...
Photocatalytic bactericidal action of fluorescent light in a titanium dioxide particle mixture: an in vitro study
titanium dioxide particle mixture vitro
2009/12/16
Traditional titanium dioxide (TiO2) has photocatalytic bactericidal properties only under ultraviolet (UV) irradiation, which restricts its use in clinical treatment regimens. In this study, we evalua...
Influence of titanium dioxide nanoparticles on speciation and bioavailability of arsenite
Arsenic TiO 2 Nanoparticles Bioaccumulation Carp Facilitated transport
2013/12/12
In this study, the influence of the co-existence of TiO2nanoparticles on the speciation of arsenite [As(III)]was studied by observing its adsorption and valence changing. Moreover, the influence of Ti...
Use of 0.1% chlorine dioxide to inhibit the formation of morning volatile sulphur compounds (VSC)
Mouthwashes Halitosis Chlorine dioxide
2009/10/16
The aim of this study was to evaluate the VSC-inhibiting effect of a commercially available mouthrinse (0.1% chlorine dioxide) when compared to its placebo. A 2-step double blind, crossover, randomise...
Marginal and Internal Adaptation of Zirconium Dioxide Ceramic Copings and Crowns with Different Finish Line Designs
Adaptation Zirconium dioxide Finish line
2009/9/14
The present study evaluated the marginal and internal adaptation of single-tooth zirconium dioxide (ZrO2) ceramic copings or crowns with three different finish line designs. Twenty-four steel dies wer...
Study on fabrication of orthodontic brackets with the photocatalytic function of titanium dioxide
Photocatalysis Titanium dioxide Bracket
2009/9/11
We sought to investigate whether the photocatalytic function of rutile-type titanium dioxide is applicable for orthodontic brackets. To this end, TiO2 specimens were compressed and sintered. Then, eac...
Roles of nitrogen,oxygen,and carbon dioxide in compressed-air narcosis
human nitrogen carbon dioxide oxygen compressed-air narcosis
2009/7/20
In an attempt to determine the roles of nitrogen, oxygen, and carbon dioxide in compressed-air narcosis, the effects on performance (mental function and manual dexterity) of adding CO2 in various conc...
Effect of prolonged exposure to elevated carbon monoxide and carbon dioxide levels on red blood cell parameters during submarine patrols
human drug red cell
2009/7/17
Effect of prolonged exposure to elevated carbon monoxide and carbon dioxide levels on red blood cell parameters during submarine patrols.
Carbon dioxide and vitamin D effects on calcium metabolism in nuclear submariners:a review
submarine CO2 carbon dioxide human chamber
2009/7/17
Studies in nuclear submariners show that calcium excretion falls rapidly to 50% of pre-patrol levels during long patrols and remains low for many weeks after return to fresh air. This has previously b...
Carbon dioxide response and breath-hold times in underwater hockey players
CO2 carbon dioxide breath hold dive
2009/7/14
Competitive underwater hockey play demands frequent and prolonged breath-hold dives. To see whether participants were physiologically adapted to breath-hold diving we studied the ventilatory response ...
The Effect of Sulfur Dioxide on t-Butyl Hydroperoxide Induced Oxidative Stress in Lung Tissues of Rats
Chemiluminescence SO2 lung ageing rat
2009/6/29
In this study, the effects of sulfur dioxide (SO2) ,a common pollutant in urban air, on t-butyl hydroperoxide-induced oxidative stress in rat lung tissues were examined. Ten young rats and 10 adult r...
Lung Carbon Dioxide Elimination Corralates With Physiologic Dead Space Volume During Mechanical Ventilatory Support
Lung carbon dioxide elimination CPAP Dead space
2009/6/29
Increased mean airway pressure (Paw) predisposes to increased alveolar dead space volume and, hence, physiologic dead space volume (V{Dphys}. This is the result of overdistending alveoli, converting Z...
Hyperbaric oxygen therapy in the treatment of carbon dioxide gas embolism
Arteriovenous Shunt Carbon Dioxide Embolism human
2009/6/4
Patients with end stage renal disease requiring hemodialysis pose multiple clinical problems, among them provision of a trouble free permanent venous access. The atriovenous shunt, made of polytetrafl...