Reactive dyes take their name from the fact that they chemically react with the fiber molecules to form a dye-fiber bond. This strong bond between the dye and the fiber imparts excellent wash-and light-fastness.ts use is in the fixing of Fiber Reactive Dyes, the creation of an alkali environment in which the cellulose and the dye are able to permanently bond together. In vat dyeing, the Ph of the liquid in which the fabric is submerged is changed to about 10.5 at an appropriate point by the addition of soda ash.
Ear infection: Introduction. An ear infection is a common type of infection and is the result of an invasion of bacteria or viruses into the ear. An ear infection is a general term for several types of infections of the ears.The ear includes three areas: the outer ear, middle ear and inner ear.An ear infection of the outer ear canal is called otitis externa or swimmer's ear. An ear infection of the middle ear is called otitis media or middle ear infection.ar infection: An infection in the ear. The infection can have bacterial or viral origins. An ear infection is also known as otitis media and can cause pain, fever or even loss of hearing. Severe cases can lead to perforation of the eardrum.
A middle ear infection, also called otitis media, is a common, often painful, type of ear infection that occurs behind the eardrum. Middle ear infections are caused by bacteria or viruses. A middle ear infection can interfere with the normal process of hearing and result in ear pain, hearing impairment, and other symptoms. People of all ages can get a middle ear infection, but it is more common in infants and young children up until the age of three.