extended-release matrix tablets of diltiazem hydrochloride (dtz) were prepared using waxy materials alone or in combination with kollidon sr. matrix waxy materials were carnauba wax (cw), bees wax (bw), cetyl alcohol (ca) and glyceryl monostearate (gms). dissolution studies were carried out by using a six stations usp xxii type 1 apparatus. the in vitro drug release study was done in 1000 ml ph...

This study was performed to design bilayer regioselective floating tablets of atenolol and lovastatin to give immediate release of lovastatin and sustained release of atenolol. Bilayer floating tablets comprised two layers, i.e immediate release and controlled release layers. The immediate release layer comprised sodium starch glycollate as a super disintegrant and the sustained release layer c...

the aim of present article is to review social classes and forces(political and economic ) situation in iran 1981-2001.the writer explained the discussion. by relative relying on poulantzas theory, this discussion indicates that in mentioned years, some groups, such as commercial and traditional middle class , because of enjoying political and economic resources were stronger than other strata ...

This study aims to (1) find out the pattern of online prostitution activities through MiChat application (2) competition in application. research used a qualitative method. To obtain samples, this purposive sampling. Criteria for informants were Commercial Sex Workers who worked aged 20-35 years. The data collection was obtained by using observation and interview techniques with 3 (three) namel...

Introduction The intentional use of drugs before or during sexual intercourse (chemsex) is a phenomenon special importance in the MSM (men who have sex with men) population due to its impact on mental, physical and health. Sexual health issues related chemsex practice been described such as difficulties achieving sober sex, erectile dysfunction problems desire. Objectives objective this study w...

It is possible to alter the permeability of ethyl cellulose membrane with certain materials such as surfactants. In this study the effect of surfactant concentration and different HLB values on the release rate of atenolol from ethyl cellulose-coated tablets was evaluated. The results showed that when the concentration of surfactant increased, the rate of drug release also increased. The kineti...

      The objective of present research was to design, evaluate and compare drug release from two different dosage forms in pulsatile drug delivery system (DDS) for Metoprolol tartarate (MT) as tablet and capsule. Pulsatile systems are gaining a lot of interest as they deliver the drug at the right site of action at the right time and in the right amount, thus providing spatial and temporal del...

To answer challenge of targeted and controlled drug release in oral delivery various materials were studied by different methods. In the present paper, controlled metal based drug (Pd(II) complex) release manner of β‑Lactoglobulin (β-LG) nanoparticles was investigated using mathematical drug release model in order to design and production of a new oral drug delivery system for gastrointestinal ...