In insulin-producing cells of the RINm5F line, the nonmetabolized analogue of L-leucine, 2-aminobicyclo[2,2,1]heptane-2-carboxylic acid decreases O2 consumption, lowers ATP content, and inhibits insulin release despite stimulation of both NH4 production and 14CO2 output from cells prelabeled with L-[U-14C]glutamine. The metabolic and secretory effects of 2-aminobicyclo[2,2,1]heptane-2-carboxyli...

one of the main components of lung alveoli is surfactant. dppc (dipalmitolphosphatidylcholine) is thepredominant lipid component in lung surfactant that is responsible for lowering surface tension in alveoli in thisarticle. we used a very approximate model with computational method of ab initio to describe the interactionsbetween dppc as important component of lung surfactant and some chemical ...

When spinach (Spinacia oleracea) chloroplast fragments were lyophilized and extracted with n-heptane, acid-bath phosphorylation was significantly reduced. Phosphorylation could be restored to these chloroplasts, if the extracted material (containing quinones, carotenoids, and other lipids) was added back to dry preparation before rehydration. The results reported suggest it was not quinones whi...

Surface properties of monomolecular films of chlorophyll (Chl), plastocyanin (Pc), cytochrome c (Cyt) and ferridoxin (Fd) were measured at a heptane-water interface. Mixed films of Chl and the other components were examined in darkness and in light. The area/molecule, A, for Fd (from Cl. pasteurianum) is much larger at a heptane-water than Fd (from spinach) at an air-water interface. This diffe...

High-puri ty samples of n-heptane and 2,2,4-trimethylpentane have been prepared by synthet ic methods and purified by fractional distillation for use as s tandards in the certification of pr imary reference fuels. One lot of n-heptane was used to prepare s tandard samples for the eomparison of precision heat-capacity calorimeters. T h e details of the syntheses are presented, and the physical p...

We have reported the study of methanol/AOT/n-heptane reverse micellar aggregates using Fourier Transform Infrared (FTIR) spectroscopy. We have divided our whole work into two parts. In the first part we have studied the structural properties of Aerosol OT (AOT) reverse micelles by monitoring the changes in the symmetrical sulfonate stretching region (1000-1100 cm(-1)), asymmetrical sulfonate st...

In insulin-producing cells of the RINmSF line, the nonmetabolized analogue of i.-leucine, 2-aminobicyclo|2,2,1 |heptane-2-carboxylic acid de creases <), consumption, lowers ATP content, and inhibits insulin release despite stimulation of both Ml, production and "(<)., output from cells prelabeled with L-|i/-uC]glutamine. The metabolic and secretory effects of 2-aminobicyclo|2,2,l|heptane-2-carb...

There is growing interest in using biodiesel in place of or in blends with petrodiesel in diesel engines; however, biodiesel oxidation chemistry is complicated to directly model and existing surrogate kinetic models are very large, making them computationally expensive. The present study describes a method for predicting the ignition behavior of blends of n-heptane and methyl butanoate, fuels w...

In this study, microemulsions of the chiral surfactant polysodium N-undecenoyl-D-valinate (poly-D-SUV) was utilized for enantiomeric separation by investigating two approaches using polymeric chiral surfactant in microemulsion electrokinetic chromatography (MEEKC). In the first approach, poly-D-SUV was used as an emulsifier surfactant along with 1-butanol and n-heptane. Enantioseparation of ani...