نتایج جستجو برای: release time
تعداد نتایج: 2072007 فیلتر نتایج به سال:
application of backward probability method in pollutant source tracking in non-uniform flow riversalireza ghanem.sc. student of water structures, tarbiat modares university, tehranmehdi mazaheri assistant prof., department of water structures, tarbiat modares university, tehranjamal mohammad vali samaniprofessor, department of water structures, tarbiat modares university, tehranintroductionriv...
Background and purpose: The pharmaceutical excipients can be incompatible with drug or other excipients. Thus, for each material, compatibility with formulation components and packaging materials should be examined. The dissolution of a drug has an important role in its bioavailability. Any change in the physico-chemical properties can result in changes in the drug release, and furthermore in i...
Introduction: Among 3 to 30 percent of women of reproductive age, experience abnormal uterine bleeding (AUB). Vaginal rings are one of the systems of interest for the local delivery of hormones that due to their polymeric structure allow prolonged release of drug. In this study, the design and fabrication of matrix vaginal rings containing levonorgestrel (LNG) were investigated. Methods: In th...
Hard gelatin capsule filled with acetaminophen, osmotic agent (sorbitol), a release promoter (sodium dodecyl sulfate), coated with a semipermeable cellulose acetate membrane containing a hydrophobic plasticizer (castor oil) and sealed with white bees wax plug was designed. When placed in the sink water penetrates the membrane, dissolves the osmotic agent and increases the osmotic pressure...
objective: evidence shows that the powder/liquid mixing ratio recommended by the manufacturers is often not respected when mixing the glass ionomer (gi) powder and liquid, yielding a gi cement with disproportionate powder/liquid ratio. considering the confirmed effect of powder/liquid ratio on the gi properties, and more importantly, its fluoride release potential, this study aimed to assess th...
The purpose of present research work is to develop gastro retentive formulation for Moxifloxacin using various release retardants. Moxifloxacin, novel synthetic fluoro quinolone, antibacterial agent. Floating tablets of Moxifloxacin. HCl were prepared using variable amounts of HPMCK4M, HPMCK15M and HPMCK100M with effervescent mixtures by direct compression technique. Totally 9 formulations were...
in recent decades, most of researchers in pharmaceutical preparations have focused increasingly on new formulations that control the site and amount of drug delivery. mucoadhesive dosage forms are available for systemic or local treatment. the mucoadhesive dosage forms are introduced in various forms such as tablets, gels, ointments, patches and polymeric films. for buccal wound and injury the ...
The present study deals with development of a floating in-situ gel of the narrow absorption window drug baclofen. Sodium alginate-based in-situ gelling systems were prepared by dissolving various concentrations of sodium alginate in deionized water, to which varying concentrations of drug and calcium bicarbonate were added. Fourier transform infrared spectroscopy (FTIR) and differential scannin...
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