|Scientific journal is a periodical publication intended to further progress of science, usually by reporting novel research. There are thousands of scientific journals in publication, and many more have been published at various points in the past. Most journals are highly specialized, although some of the oldest journals publish articles and scientific papers across a wide range of scientific fields. Scientific journals contain articles that are peer reviewed, to ensure that articles meet the journal's standards of quality, and scientific validity. The publication of the results of research is an essential part of the scientific method. If they are describing experiments or calculations, they must supply enough details that an independent researcher could repeat the experiment or calculation to verify the results. Each such journal article becomes part of the permanent scientific record.
It also spelled homoeostasis or homeostasis, is the ability of a system that regulates its internal environment and tends to sustain a steady, relatively constant status of properties such as warmth or pH. It is a process in which the body's interior natural environment is kept steady, regardless of alterations in external situation. The concept was recounted by Claude Bernard and the period was later coined by Walter Bradford Cannon in 1926, 1929and 1932. Homeostasis encompasses regulation of the pH of the body-fluid at 7.365 (a measure of alkalinity and acidity). All animals furthermore regulate their body-fluid glucose, as well as the engrossment of their body-fluid. Mammals regulate their body-fluid glucose with insulin and glucagon. The human body maintains glucose levels unchanging most of the day, even after a 24-hour fast. Even during long time span of fasting, glucose grades are reduced only very slightly. Insulin, secreted by the beta units of the pancreas, effectively conveys glucose to the body's units by instructing those units to hold more of the glucose for their own use. If the glucose inside the units is high, the units will alter it to the insoluble glycogen to avert the soluble glucose from interfering with cellular metabolism.