Densities and excess molar volume of the binary and ternary mixtures formed by nbutylacetate+ 1-butanol + 1,2-butanediol were measured at (298.15, 303.15, and 308.15) K forthe liquid region and at ambient pressure (81.5) k Pa , for the whole composition range. Theexcess molar volumes,VmE and excess partial molar volume ViE ,were calculated fromexperimental densities.The excess molar volumes are...

densities and excess molar volume of the binary and ternary mixtures formed by nbutylacetate+ 1-butanol + 1,2-butanediol were measured at (298.15, 303.15, and 308.15) k forthe liquid region and at ambient pressure (81.5) k pa , for the whole composition range. theexcess molar volumes,vme and excess partial molar volume vie ,were calculated fromexperimental densities.the excess molar volumes are...

A suspended-growth bioreactor (SGB) was operated for the treatment of a gaseous stream mimicking emissions generated at a leather industrial company. The main volatile organic compounds (VOCs) present in the gaseous stream consisted of 1-methoxy-2-propanol, 2,6-dimethyl-4-heptanone, 2-butoxyethanol, toluene and butylacetate. A microbial consortium able to degrade these VOCs was successfully enr...

Flow velocity profiles of micro counter-current flow of aqueous and butylacetate phases in a microchannel having a width of 100 microm were measured by micro particle image velocimetry. In order to analyze the hydrodynamic characteristics of the counter-current flow, we derived a simple analytical model for the velocity profile. When flow rates of the aqueous and organic phases were 0.2 and 0.1...

In arthritic individuals who have only one or two peripheral joints causing difficulty, it would seem advisable to treat these joints locally by direct intraarticular injection of medication in an effort to decrease the incidence and severity of toxicity associated with systemic therapy. The first very effective anti-rheumatic preparation for intraarticular injection was hydrocortisone acetate ...

The intra-articular injection of hydrocortisone acetate is commonly used in the treatment of osteoarthritis, although its action in this disease has received less careful study than in rheumatoid arthritis. In 1955 a less soluble ester, hydrocortisone tertiary-butylacetate (TBA) was developed for intraarticular therapy with the claim that its effects were more pronounced and of longer duration ...

In a preliminary report (Zuckner, 1961) on intramuscular steroid therapy in patients with rheumatoid arthritis, results of approximately 100 injections of triamcinolone acetonide (hereafter referred to as TACTN)* and triamcinolone diacetate (or TDAC)t were described. The responses to this method of steroid administration were satisfactory in most cases, and compared favourably with those follow...