Nanoparticles can be considered as a useful tool for improving properties of poorly soluble active ingredients. Hydrochlorothiazide (Class IV of the Biopharmaceutical Classification System) was chosen as a model compound. Antisolvent precipitation-solvent evaporation and emulsion solvent evaporation methods were used for preparation of 18 samples containing hydrochlorothiazide nanoparticles. Wa...

The solubility of acid soluble soy protein (ASSP) is poor in the pH range of 4-7. ASSP-dextran conjugates were prepared through the Maillard reaction to increase the solubility and/or dispersibility of ASSP. By using the conjugates and ultrasonication emulsification, stable oil-in-water emulsions with submicrometer-sized droplets were obtained. The factors, such as ASSP conjugation degree, that...

In this study, the nonlinear optical properties and optical limiting performance of the silver nanoparticles (AgNPs) in distilled water are investigated. The nonlinear absorption coefficient of the colloid is measured by the Z-scan technique. The optical limiting behavior of the AgNP suspension is investigated under exposure to nanosecond laser pulses at 532 nm. The results show that nonlinear ...

The behavior of polymeric surfactant polyvinyl acetate (PVAC)-b-poly(1,1,2,2-tetrahydroperfluorooctyl acrylate) (PTAN) in supercritical carbon dioxide (CO2) was investigated using static and dynamic light scattering. We observed three regions on the phase diagram of the copolymer in supercritical CO2: (i) two-phase region at low CO2 density; (ii) solutions of spherical micelles at intermediate ...

The new method proposed in this work not only measures the particle size distribution and the average molar mass accurately using the static light scattering (SLS) technique when the Rayleigh-Gans-Debye approximation is valid for dilute poly-disperse homogenous spherical particles in dispersion, but also enables us to have insight into the theoretical analysis of the dimensionless shape paramet...

We study the equilibrium liquid structure and dynamics of dilute and concentrated bovine eye lens α-crystallin solutions, using small-angle X-ray scattering, static and dynamic light scattering, viscometry, molecular dynamics simulations, and mode-coupling theory. We find that a polydisperse Percus-Yevick hard-sphere liquid-structure model accurately reproduces both static light scattering data...

This section focuses on recent work on temporal fluctuations of the intensity of multiply scattered light which are caused by motion of the scatterers. While parts ofthe underlying physics had already been discussed in 1983/84 [85, 86], dynamic multiple scattering of light was introduced by the work on calibrated colloidal latex particles in aqueous suspensions [29, 30, 87], and has since rapid...

Functional food emulsions enriched in health-promoting nutrients can help to maintain and improve health lifestyle. The oil extracted from the Amazonian buriti fruit is renowned for its high levels of carotenoid, vitamin E, unsaturated fatty acids, which have been linked improvements cardiometabolic health. Here, water are developed their colloidal transformations investigated an advanced diges...

This paper aims to investigate a mechanism of microdroplet formation at a micro T-shaped junction using a “phaselocked multicolor confocal micro-PIV (Particle Image Velocimetry)” technique[1]. The multicolor system can measure dynamic behavior of each phase of multiphase flow separately and simultaneously. Additionally, the phase-locking technique enables picking up same condition of droplet fo...

Acute pesticide poisoning is an important public health problem worldwide and accounts for a significant number of deaths occurring each year. The present article aimed to investigate toxic effects imidacloprid (IMD) nanoemulsion formulated using ultrasound dispersion technique, characterized FTIR, TEM anddynamic light scattering in adult rats. synthesized Nano-emulsion droplets are mainly sphe...