activation analysis can be very
31Obsidian use in Mesoamerica — Obsidian projectile point. Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre Columbian Mesoamerica. Obsidian was a highly integrated part of daily and ritual life, and its widespread and… …
32Ionomics — The ionome is the mineral nutrient and trace element composition of an organism, representing the inorganic component of cellular and organismal systems. Ionomics, the study of the ionome, requires application of high throughput elemental… …
33ancient Rome — ▪ ancient state, Europe, Africa, and Asia Introduction the state centred on the city of Rome. This article discusses the period from the founding of the city and the regal period, which began in 753 BC, through the events leading to the… …
34Metformin — Chemical structure (top) and ball and stick model (bottom) of metformin System …
35Hemodialysis — In medicine, hemodialysis (also haemodialysis) is a method for removing waste products such as potassium and urea, as well as free water from the blood when the kidneys are in renal failure. Hemodialysis is one of three renal replacement… …
36Radiochemistry — is the chemistry of radioactive materials, where radioactive isotopes of elements are used to study the properties and chemical reactions of non radioactive isotopes (often within radiochemistry the absence of radioactivity leads to a substance… …
37electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
38Open-pool Australian lightwater reactor — For other uses, see Opal (disambiguation). Science with Neutrons Foundations Neutron temperature Flux  …
39PID controller — A block diagram of a PID controller A proportional–integral–derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems – a PID is the most commonly used feedback… …
40Grief — Bereavement redirects here. For the film, see Bereavement (film). For other uses, see Grief (disambiguation). A funeral during the Siege of Sarajevo in 1992 Grief is a multi faceted response to loss, particularly to the loss of someone or… …
