SCIENCE

Seismic waves are waves of energy that travel through Earth’s layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy. The propagation velocity of seismic waves depends on density and elasticity of the medium as well as the type of wave. Velocity tends to increase with depth through Earth’s crust and mantle, but drops sharply going from the mantle to outer core. … Read more

A person’s eye color depends on how much of a pigment called melanin is stored in the front layers of the iris, the structure surrounding the pupil. Specialized cells called melanocytes produce the melanin, which is stored in intracellular compartment called melanosomes. People have roughly the same number of melanocytes, but the amount of melanin … Read more

What Is a Fuse? In electrical, a fuse is an essential device used in various electrical circuits which gives the protections from the over-current. It is made up of a thin strip or strand of metal, so that, whenever the heavy amount of current or an excessive current flow is there in an electrical circuit, … Read more

What Is An Ideal Gas? An ideal gas is a hypothetical gas whose molecules exhibit no intermolecular attractive forces and undergo elastic collision with each other and with the walls of the container. An ideal gas conforms to a particular idealized relation between pressure, volume and temperature referred to as ideal gas law. The ideal … Read more

What Is Single Circulation? Single circulation is a circulation in which blood flows once through the heart in one complete cycle of the body with the blood being pumped through the capillaries of the gills and on to the capillaries of the body tissues. In an open circulatory system, blood vessels transport all fluids into … Read more

Acid Stain Basic Stain Neutral Stain Chromogen of acidic stain is negatively charged. It is also referred to as anionic stain. Chromogen or colored part of basic stain is positively charged. It is also referred to as cationic stain. It is a complex of dye acid with dye base. Used to stain the positively charged … Read more

What Is Pairwise Sequence Alignment? Pairwise alignment is one of the most fundamental tools of bioinformatics and underpins a variety of other, more sophisticated methods of annotation. The goal of Pairwise sequence alignment is to establish a correspondence between the elements in a pair of sequence that share a common property, such as common ancestry … Read more

A feeding tube is a medical device used to provide nutrition to people who cannot obtain nutrition by mouth, are unable to swallow safely, or need nutritional supplementation. The state of being fed by a feeding tube is called gavage, enteral feeding or tube feeding. Placement may be temporary for the treatment of acute conditions or lifelong in the case of … Read more

Precipitation Titration Titration is a process by which the concentration of an unknown substance in solution is determined by adding measured amounts of a standard solution that reacts with the unknown. Then the concentration of the unknown can be calculated using the stoichiometry of the reaction and the number of moles of standard solution needed … Read more

Hemolysis is the breakdown of red blood cells. Hemolysis is used in the empirical identification of microorganisms based on the ability of bacterial colonies grown on agar plates to break down red blood cells in the culture. When the organism has been grown on blood agar plates, it can be classified with regard to whether or not it has caused hemolysis in the red blood cells (RBCs) incorporated in … Read more