The stability of an emulsified liquid membrane composed of Span80 as a surfactant, D2EHPA as an extractant and sulfuric acid as an internal phase was first studied according to different diluents and many operating parameters using the Plackett-Burman design of experiments. Then the removal of methylene blue from an aqueous solution has been carried out using this emulsified liquid membrane at ...

Tobramycin belongs to the aminoglycoside class of antibiotics. Assay procedures were investigated to determine the most suitable methods for the assay of tobramycin in blood, urine, and pharmaceutical preparations. The agar-plate assay was the method of choice for determinations in urine and serum. The turbidimetric assay was selected for the assay of pharmaceutical preparations. An extraction ...

A proton NMR method for the drtermination of salvation numbers of alkaline earth cations with hexamethyl phosphoramide (HMPA) in nitromethane (NM) as diluents is described. The method is based on monitoring the resonance frequency of HMPA protons as a function of HMPA / metal ion molar ratio at constant metalion concentration. The average salvation number of cations,  , at any HMPA / metal ...

An improved white cell diluent for use with the Eel electronic counter is described. It possesses advantages over previously described diluents in the rapidity of its action as a red cell stromalysin and in its ability to conserve surviving leucocytes for long periods of time. These properties enable counts to be made either immediately after preparation of the suspension or several hours later...

<p class="MDPI17abstract"><strong>Objective: </strong>The purpose of this research was to find out the rise spermatozoa motility Waringin sheep which given additional amount PGF2α in commercial semen diluents (Andromed).</p><p class="MDPI17abstract"><strong>Methods: </strong>A total 3 aged 2-3 years were used study. Semen samples collected using an arti...

Seminal plasma represents a very interesting fluid for studying semen, with relevance to diluents/extenders, optimizing freezing protocols and understanding reproductive failure. Together with the reductionist approach, in this work we consider different species and, with the use of results from automated clinical equipment, provide some ranges of the most common and economically derived parame...

This paper reports the physicochemical properties that describe the adsorption of a series of solutes onto the surfaces of amorphous carbon blacks. Adsorption was studied at concentrations that correspond to low surface coverages and in the presence of volatile solvent diluents. The adsorbates and adsorbents were selected for their relevance as models for environmental agent-particle complexes ...

The broad absorption of Cl3 radical was observed between 1150 and 1350 nm using cavity ring-down spectroscopy at 213-265 K and 50-200 Torr with He, N2, Ar, or SF6 diluents. The absorption intensity of Cl3 increased at lower temperature and higher pressure. SF6 was the most efficient diluent gas. The temperature dependent equilibrium constants for Cl3 formation from Cl+Cl2 were theoretically cal...

The influence of epoxy active diluents, 1,4-butanediol diglycidyl ether (BD) and furfuryl glycidyl (FUR), in the mixtures with benzoxazine monomer based on bisphenol A, formaldehyde m-toluidine (BA-mt), properties a matrix was disclosed this work. Resins were modified to achieve good tackiness at room temperature reduced viscosity. mono- difunctional modifiers process curing studied by way diff...