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 […]
IN VITRO–IN VIVO CORRELATION: IVIVC refers to a relationship between a physicochemical characteristic of the dosage form, as determined by in vitro dissolution and biological property and as determined by in vivo pharmacokinetics. The objectives of IVIVC are to use […]
Any dissolution test method involves immersing the dosage form in a suitable dissolution medium, which is kept in motion at a constant speed and requires determining the rate at which the drug substance is released from the dosage form and […]
PEPTIC ULER: Peptic ulcer are open sores that develop on the inner lining of the stomach and the upper portion of small intestine. It occurs in that part of the g.i.t which is exposed to gastric acid secretions. Types of […]
COUGH: It is physiologically useful protective reflex that clears the respiratory tract of the accumulated mucus and foreign substances. It occurs due to stimulation of mechano/chemo receptors in throat, respiratory, passage or stretch receptors in the lung Types of cough: […]
COPD: Chronic obstructive pulmonary disease, a group of lung disease that blocks airflow and make it difficult to breathe. Types of COPD: There are two main types of COPD. Chronic bronchitis: Which involves a long term cough with mucus. Emphysema: […]