Oogenesis occurs in the outermost layers of the ovaries. As with sperm production, oogenesis starts with a germ cell, called an oogonium (plural: oogonia), but this cell undergoes mitosis to increase in number, eventually resulting in up to one to […]
Principle The ball mill operates on the principle of impact and attrition. In this, impact occurs between fast moving balls and the powder material while the attrition mode comes in action when the hollow cylinder rotates on its longitudinal axis. […]
Rotary Cutter Mill Principle In Rotary cutter mill, feed material is size reduced by continuous cutting and shearing by the help of sharp knives Construction In this mill, the milling chamber contains 2 types of knives: stationary knives and rotating […]
Principle The hammer mill works on the principle of impact. Here impact occurs between the fast moving hammers which are fitted on a rotor and the feed material. Construction The hammer mill is of two types: either vertically shafted type […]
The National Forensic Sciences University with the status of an Institution of National Importance is the world’s first and only University dedicated to Forensic, behavioral, cybersecurity, digital forensics, and allied Sciences. It was established by the Government of India through […]
When powders are poured into a pile, segregation occurs. Particles with small size (fine particles) will stay in the center of the pile, and coarser particles tend to concentrate at the periphery. Size segregation is unavoidable, during powder transportation, storage, […]
The term “powder” has more than one connotation in pharmacy. It may be used to describe the physical form of a material, that is, a dry substance composed of finely divided particles. Or, it may be used to describe a […]
Diffusion During Swelling of Matrix – When water-soluble drugs are entrapped in glassy hydrogels, the release of the drugs engages simultaneously the absorption of water and desorption of drug while the hydrogels swell slowly. Drug release kinetics is governed by […]
DRUG RELEASE FROM POLYMER MATRICES: When the conventional dosage forms (i.e. tablets, capsules, ointment or creams) are administered orally or topically, the active drug in the dosage form is immediately released and absorbed into the systemic circulation. The release of […]