|These are also called as aqua gels. These are the network of polymer chains that are water insoluble. In this water is dispersion medium. These are very flexible and similar to natural tissue. The polymer chains of hydrogels are cross linked. The nature of connections are different for physical and chemical hydrogels. For physical hydrogels they are held by either electrostatic forces/ hydrogen bonds/ interactions where as for chemical hydrogels they are held by permanent covalent bonds.
A journal is a periodical publication intended to further progress of science, usually by reporting new research. Most journals are highly specialized, although some of the oldest journals publish articles, reviews, editorials, short communications, letters, and scientific papers across a wide range of scientific fields. Journals contain articles that peer reviewed, in an attempt to ensure that articles meet the journal's standards of quality, and scientific validity. Each such journal article becomes part of the permanent scientific record.