نتایج جستجو برای: excess molar volume
تعداد نتایج: 418692 فیلتر نتایج به سال:
Methionine is an amino acid that extremely important for human health. To better understand the biochemical events occurring in body, excess molar properties of methionine and aqueous ethanol methanol mixtures were determined at 298.15 K. Interactions between components solutions are explained. Negative deviations from ideal state have been observed due to hydrogen bonds, dipole interactions, c...
The aim of this study was to prepare liposomes of acyclovir (ACY) by thin layer evaporation (TLE) and reverse phase evaporation (REV) methods. Twenty-seven batches of liposomes from each method were prepared using technique of three variables at three levels (33) factorial design. Drug/Lipid (molar ratio), hydration volume and hydration time were considered three independent variables in TLE me...
Copollutants found in air samples and other complex chemical mixtures may alter the metabolism, and thus the biological activity, of chemical carcinogens. As an initial step to determine whether the metabolism and DNA binding of carcinogenic nitrated polycyclic aromatic hydrocarbons found in diesel exhaust particles are altered by copollutants, we studied the effect of pyrene on the metabolism ...
Degradation of surface-bound fibronectin of the upper respiratory tract by human leucocyte elastase (HLE) was shown to favour colonization of these mucosal surfaces by Gram-negative bacteria. We investigated the degradation of fibronectin by purified HLE and by enzymes released from stimulated human polymorphonuclear leucocytes (PMNs), in the presence of recombinant secretory leucocyte proteina...
Simple distillation columns with ideal vapor-liquid equilibrium may display multiple steady-state solutions. Two fundamentally different sources for the multiplicity are presented. Both bring about the unexpected result that increasing reflux makes separation worse in the top part of the column. It corresponds to an unstable operating point. The first type of multiplicity is found for columns w...
The thickness of dental enamel is often discussed in paleoanthropological literature, particularly with regard to differences in growth, health, and diet between Neandertals and modern humans. Paleoanthropologists employ enamel thickness in paleodietary and taxonomic studies regarding earlier hominins, but variation in enamel thickness within the genus Homo has not been thoroughly explored desp...
Ultrasonic velocities, u, and densities, ρ of 0.5 m, 1.0 m and 1.5 m aqueous ethylene glycol and propylene glycol solutions in iso-propanol have been measured over the entire composition range at 308.15 K. From this experimental data, deviation in ultrasonic velocity, ∆u, deviation in isentropic compressibility, ∆ks, excess intermolecular free length, E f L , excess acoustic impedance, Z E and ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید