In this paper we present a new kind of kinoform lenses in which the phase distribution is characterized by the "devil's staircase" function. The focusing properties of these fractal DOEs coined devil's lenses (DLs) are analytically studied and compared with conventional Fresnel kinoform lenses. It is shown that under monochromatic illumination a DL give rise a single fractal focus that axially ...

Aqueous (hydrophilic) and chloroform (Lipophilic) extracts of nine medicinal plants currently used in traditional medicine, in Egypt, to treat some gastrointestinal tract (GIT) disorders were tested for their gastro-protective effect against the incidence of peptic ulcer. Indomethacin-induced ulcer in a rat model was used for this testing. Mentha microphylla, Brassica oleracea Capitata (Cabbage...

Aqueous (hydrophilic) and chloroform (Lipophilic) extracts of nine medicinal plants currently used in traditional medicine, in Egypt, to treat some gastrointestinal tract (GIT) disorders were tested for their gastro-protective effect against the incidence of peptic ulcer. Indomethacin-induced ulcer in a rat model was used for this testing. Mentha microphylla, Brassica oleracea Capitata (Cabbage...

Guided by the recent success of empirical model predicting the folding rates of small two-state folding proteins from the relative contact order (CO) of their native structures, by a theoretical model of protein folding that predicts that logarithm of the folding rate decreases with the protein chain length L as L(2/3), and by the finding that the folding rates of multistate folding proteins st...

The evaporation and dynamics of a multicomponent droplet on a heated chemical patterned surface were presented. Comparing to the evaporation process of a multicomponent droplet on a homogenous surface, it is found that the chemical patterned surface can not only enhance evaporation by elongating the contact line, but also change the evaporation process from three regimes for the homogenous surf...

Using natural fibers in composites presents a wide range of applications, from furniture to airplanes. In polymeric composite, the use fiber is boost strength and stiffness. However, this material low mechanical properties compared virgin polymers due hydrophilic nature hydrophobic polymer. It can result weak bonding matrix/fiber which may cause incompatibility problem with most polymer matrice...

In recent years, orally disintegrating films (ODFs) have been studied as alternative ways for drug administration. They can easily be applied into the mouth and quickly disintegrate, releasing with no need of water ingestion enabling absorption through oral mucosa. The ODFs matrices are typically composed hydrophilic polymers, in which natural polymers highlighted since they extracted from sour...