This paper reports a study on producing admixtures from chitosan (Ch) obtained shrimp shell treatment. The (Ch-g-AA) were based and acrylic acid (AA) in the following composition ratios: 65/35, 50/50, 35/65. T

A simple flow injection with flame photometric detection has been developed for determination of sodium, potassium, and total alkalies in portland cement, fly ash, admixtures, and water of concrete. A liquid sample or a digest of solid sample was injected into a water carrier stream which flowed to a flame photometer. A change in emission intensity at a selected wavelength was recorded as a pea...

Although chiral soliton model predictions for the mass of the lightest exotic pentaquark, the Θ with zero isospin and unit strangeness, have been around for some time, the study of pentaquarks as baryon resonances became popular only recently when experiments indicated their existence. These experiments were stimulated by a chiral soliton model estimate suggesting that such exotic baryons might...