THE exchange of water between blood and eye fluids is very rapid (Kinsey, Grant, and Cogan, 1942) in comparison with the migration of sodium chloride across the blood aqueous barrier. Consequently, on making the blood hypertonic by the intravenous injection of sodium chloride, water should be withdrawn from the eye, and the intra-ocular pressure lowered. Qualitatively, such an effect has been d...

The coordination chemistry of oxotitanium(IV) or titanyl(IV), TiO2+, has been studied in solution by X-ray methods. The titanyl(IV) ion hydrolyzes easily in aqueous systems to solid titanium dioxide as long as it is not stabilized through complexation. In this study the structures of the hydrated bissulfatotitanyl(IV) complex and the dimethylsulfoxide (DMSO) solvated titanyl(IV) ions have been ...

Anterior chambers of the eyes of male rats were cannulated under pentobarbital anesthesia for intracameral infusions of balanced salt solution (BSS) and intraocular pressure (IOP) recording. Blood pressure was recorded from a femoral artery. IOP was recorded during a 2-h intracameral infusion composed of a constant component (0.05 microl/min) and a periodic component (0.25 microl/min), cycling ...

OBJECTIVE The aim of this study was to determine the decalcifying efficacy of 7% maleic acid (MA), 2% chlorhexidine (CHX), and combinations of 7% MA + 0.2% cetrimide (CTR) and 2% CHX + 0.2% CTR, in four time periods. STUDY DESIGN Four specimens per tooth were obtained from a 2-mm thick slice of the cervical third of the root of ten human incisors. At 1, 2, 3 and 5 minutes of immersion, the co...

Conventional treatment processes are not effective in removing micropollutants such as antibiotics and other drugs present wastewater, degradation methods based on advanced oxidative become attractive. Herein, it was synthesized Fe3-xO4-y-TiO2 particles by coprecipitation method they were heat-treated at 100, 400, 800 �C. The obtained solids characterized X-ray diffraction thermogravimetric ana...

The results of the effects of electrolyte type and concentration, nanoparticle concentration, pH, and temperature on the mobility and aqueous stability of polyethylene glycol (PEG)-coated silica nanoparticles are presented. Nanoparticle mobility was evaluated based on the ability to inhibit montmorillonite swelling in aqueous solutions through visual swelling tests, and the results were quantif...

Textile industries consume large volumes of water for dye processing, leading to undesirable toxic dyes in water bodies. Dyestuffs are harmful to human health and aquatic life, and such illnesses as cholera, dysentery, hepatitis A, and hinder the photosynthetic activity of aquatic plants. To overcome this environmental problem, the advanced oxidation process is a promising technique to minerali...

In this paper, a cloud point extraction method for the determination of trace amounts of Orange II by spectrophotometry is described. The method is based on the extraction of Orange II from aqueous solution using mixed micelles of non-ionic surfactant, Triton X-100 and cationic surfactant cetyltrimethyl ammonium bromide (CTAB) in acidic media. The extracted surfactant rich phase is diluted with...

It has been commonly assumed that carbamate kinnse (EC 2.7.2.2, ATP : carbamate phospllotransferase) catalyzes the transfer of a phosphate group between 1TP and the carbamate ion. Evidence which has been put forward supporting this belief is the observation that freshly dissolved ammonium carbamate is a much better substrate for the enzyme than freshly dissolved ammonium carbonate at pH 9.4 (1)...