| bioenergy | Useful, renewable energy produced from organic matter. The conversion of the complex carbohydrates in organic matter to energy. Organic matter may either be used directly as a fuel or processed into liquids and gases. (05 Dec 1998) |
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| bioengineering | The science of developing and manufacturing artificial replacements for organs, limbs and tissues. A branch of engineering in which live plants and plant parts are used as building material for erosion control and landscape restoration (this is in contrast to conventional engineering, in which only dead materials are used). (09 Oct 1997) |
| bioenrichment | Adding nutrients or oxygen to increase microbial breakdown of pollutants. (09 Oct 1997) |
| bioequivalence | Two different drugs which have the same potency and bioavailability, assuming equal doses. (09 Oct 1997) |
| bioequivalent | Having the same strength and similar bioavailability in the same dosage form as another specimen of a given drug substance. (18 Nov 1997) |
| bioethics | Bioethics is the branch of ethics, philosophy and social commentary that discusses the life sciences and their potential impact on our society. (14 Nov 1997) |
| biofeedback | <procedure> A process in which a person learns to influence reliably physiologic responses of two kinds: those that are not ordinarily under voluntary control or those that ordinarily are easily regulated but for which regulation has broken down because of trauma or disease. <psychology> A process that uses instrumentation to give a person immediate and continuing signals of change in his bodily function of which he is usually unaware. (12 Dec 1998) |
| biofilm | <technique> A technique of immobilising cells by growing microbes or other microbial organisms, usually embedded in extracellular polymers such as implanted medical devices, which adhere to surfaces submerged in, or subjected to, aquatic environments. They are glued together to form microbial communities which are highly resistant to both phagocytes and antibiotics. A layered culture of microorganisms growing on a surface that they have created themselves by secreting polysaccharides and glycoproteins. (26 Jun 1999) |
| bioflavonoid | <pharmacology> A group of chemical substances found in many plants which help keep the cell walls of small blood vessels permeable. (13 Nov 1997) |
| bioflavonoids | Naturally occurring flavone or coumarin derivatives having the activity of the so-called vitamin P, notably rutin and esculin. (05 Mar 2000) |
| biofuel | A gaseous, liquid, or solid fuel that is rendered from raw biological material (plants, sewage, dry waste, cane sugar or wood pulp) through combustion or fermentation. There are a variety of ways to convert these bulky materials into fuels useful for industry and transport. The major biofuels produced biologically are biogas generated by anaerobic digestion (biomethanation) and fuel ethanol generated by a yeast-based fermentation of molasses, sugar cane juice, or hydrolysed seed. (14 Nov 1997) |
| biofuels | Fuels made from cellulosic biomass resources. Biofuels include ethanol, biodiesel, and methanol. (05 Dec 1998) |
| biogas | A gas that is produced through anaerobic respiration, itcontains mostly methane and carbon dioxide with small amounts of watervapor, nitrogen, hydrogen, or other gases. (09 Oct 1997) |
| biogen | <biology> Bioplasm. Origin: Gr. Life + -gen. Source: Websters Dictionary (01 Mar 1998) |
| biogenesis | The theory that life always arises from previously existing life, and never from things which are not alive (as would be the case for the theory of spontaneous generation). (09 Oct 1997) |