SCIENCE

A Proportionate counter is an instrument for detecting and measuring the intensity of ionizing radiation. It is similar to a Greiger Mueller counter but operates at a lower potential difference such that the magnitude of the discharge is directly proportional to the number of gas molecules ionized by the detected particle. This may permit the … Read more

Gas solid chromatography and Gas liquid chromatography are both the main types of Gas chromatography. In both methods, either liquid or solid is used as a stationary phase whereas gas is used a mobile phase. Gas solid chromatography entails passage of a mixture of volatile compounds with differential migration through a column containing solid stationary … Read more

A covalent bond also referred to as a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electrons are pairs are referred to as shared pairs or bonding pairs and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent … Read more

Pi Bond & Sigma Bond A Pi bond is a covalent bond which is formed by the side-to-side overlap of two atomic orbitals. Each of these atomic orbitals has zero electron density at a shared nodal plane, passing through the two bonded nuclei. The same plane is also a nodal plane for the molecular orbital … Read more

What Are ZooPlankton? Zooplankton are a type of heterotrophic plankton that range from microscopic to large species. They are found within large bodies of water, including oceans and freshwater systems.  Zooplankton community is composed of both primary consumers which eat free-floating algae and secondary consumers which feed on other zooplankton. Zooplankton can also be described … Read more

Photoperiodism refers to the response of plants to the lengths of dark and light periods. Many flowering plants (Angiosperms) use a photoreceptor protein such as phytochrome or crytochrome to sense changes in their environment as far night or day length is concerned, which they take as signals a to flower.  Vernalization is the artificial exposure … Read more

Urethra is the vessels responsible for transporting urine from the bladder to an external opening in the perineum. It is lined by stratified columnar epithelium which is protected from corrosive urine by mucus secreting glands. The male urethra is a narrow fibromuscular tube that conducts urine and semen from bladder and ejaculatory ducts respectively to … Read more

Micronutrients & Macronutrient  Micronutrients are plant nutrients which are required in small quantities and are mainly responsible for repairing damaged tissues and cells, prevention of infectious diseases by fighting against the disease-causing pathogens including bacteria virus and fungi. Examples of micronutrients include: iron, calcium, vitamins, minerals and vitamin C. Micronutrients are largely obtained from vegetables, … Read more

Photophosphorylation is the process of synthesizing energy-rich ATP molecules by transferring the phosphate group into ADP molecules in the presence of light. This process can either be a cyclic process or a noncyclic process. The Photophosphorylation process that results in movement of electrons in a cyclic manner for synthesizing of ATP molecules is referred to … Read more

ALOHA was developed in the 1970s by Norman Abramson at the University of Hawaii in i970 as a first demonstration of wireless networks. ALOHA is a system for coordinating and arbitrating access to a shared communication networks channel.  A shared communication system like ALOHA requires a method of handling collisions that occur when two or … Read more