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Ferrochrome or ferrochromium (FeCr) is a type of ferroalloy, that is, an alloy of chromium and iron, generally containing 50 to 70% chromium by weight. [ 1 ] [ 2 ] Ferrochrome is produced by electric arc carbothermic reduction of chromite .
Although this mechanism is an elegant response to short-term bacterial infection, it can cause problems when it goes on so long that the body is deprived of needed iron for red cell production. Inflammatory cytokines stimulate the liver to produce the iron metabolism regulator protein hepcidin, that reduces available iron.
3D representation of a living cell during the process of mitosis, example of an autopoietic system. The term autopoiesis (from Greek αὐτo-(auto) 'self' and ποίησις () 'creation, production'), one of several current theories of life, refers to a system capable of producing and maintaining itself by creating its own parts. [1]
Niklas Luhmann was a prominent sociologist and social systems theorist who laid the foundations of modern social system thought. [5] He based his definition of a "social system" on the mass network of communication between people and defined society itself as an "autopoietic" system, meaning a self-referential and self-reliant system that is ...
Iron-binding proteins are carrier proteins and metalloproteins that are important in iron metabolism [1] and the immune response. [2] [3] Iron is required for life.Iron-dependent enzymes catalyze a variety of biochemical reactions and can be divided into three broad classes depending on the structure of their active site: non-heme mono-iron, non-heme diiron , or heme centers. [4]
In the sociology of the body, body theory is a theory that analyses the human body as an ordered or "lived-in" entity, subject to the cultural and conceptual forces of a society. It is also described as a dynamic field that involves various conceptualizations and re-significations of the body as well as its formation or transformation that ...
Environmental sociology is the study of interactions between societies and their natural environment.The field emphasizes the social factors that influence environmental resource management and cause environmental issues, the processes by which these environmental problems are socially constructed and define as social issues, and societal responses to these problems.
In a spectacular society, the system of commodity production generates a continual stream of images, for consumption by people who lack the experiences represented therein. The spectacle represents people solely in terms of their subordination to commodities, and experience itself becomes commodified.