| biological engineering | <agriculture> A type of artificial selection, the creation of plant or animal breeds that are agriculturally or industrially useful. Compare: natural selection. (21 Mar 1998) |
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| biological factors | Compounds made by living organisms. They have biological or physiological activities. (12 Dec 1998) |
| biological half-life | <biochemistry, biology> This is the time required for one-half of the total amount of a particular substance in a biological system to be consumed or broken down by biological processes when the rate of removal is approximately exponential. Toxic chemicals with a long biological half-life (such as some pesticides) will tend to accumulate in the body and are, therefore, more likely to be harmful. A substance with a short biological half-life may still accumulate if a portion of it it becomes tightly bound to bone or other tissues, even if most of it is quickly cleared from the body. (21 Mar 1998) |
| biological hazard potential | <radiobiology> Measure of the hazard posed by a given quantity of radioactive material in which the variation in biological effects of the various elements are accounted for. See: integrated biological hazard potential. (21 Mar 1998) |
| biological immunotherapy | <immunology> Treatment of disease by stimulating the bodys own immune system. This is a type of therapy currently being researched as a treatment for cancer. (16 Dec 1997) |
| biological magnification | <biology, zoology> The process by which toxins such as pesticides build up in each successive link in the food chain. For instance, a given population of beetles may have very low levels of a fat-soluble pesticide, but the pesticide will build to much greater levels in the fat of a bird that eats those beetles, and the pesticide will reach greater levels still in a human or panther that eats the beetle-eating birds. (21 Mar 1998) |
| biological markers | Measurable and quantifiable biological parameters (e.g., specific enzyme concentration, specific hormone concentration, specific gene phenotype distribution in a population, presence of biological substances) which serve as indices for health- and physiology-related assessments, such as disease risk, psychiatric disorders, environmental exposure and its effects, disease diagnosis, metabolic processes, substance abuse, pregnancy, cell line development, epidemiologic studies, etc. (12 Dec 1998) |
| biological monitoring | This is the periodic examination of biological specimens for the purposes of monitoring their exposure to or the effects of potentially toxic chemicals to the environment. This is normally done by analysing the amounts of the toxic substances or their metabolites present in body tissues and fluids. The term is also used to mean assessment of the biological status of populations and communities of organisms at risk, in order to protect them and to gain an early warning of possible hazards to human health. (09 Oct 1997) |
| biological oceanography | <study> The study of marine plants and animals and the way they interact with the marine environments. Similar to the study of marine biology. (21 Mar 1998) |
| biological oxidation | Decomposition of organic materials by microorganisms. (05 Dec 1998) |
| biological phenomena | Biological functions and activities at the organic and molecular levels in humans, animals, microorganisms, and plants. For biochemical and metabolic processes, biochemical phenomena is available. (12 Dec 1998) |
| biological products | Complex pharmaceutical substances, preparations, or agents of organic origin, usually obtained by biological methods or assay, that depend for their action on the processes affecting immunity. They are used especially in diagnosis and treatment of disease (as vaccines or pollen extracts). Biological products are differentiated from biological factors in that the latter are compounds with biological or physiological activity made by living organisms. (12 Dec 1998) |
| biological psychiatry | An interdisciplinary science concerned with studies of the biological bases of behaviour - biochemical, genetic, physiological, and neurological - and applying these to the understanding and treatment of mental illness. (12 Dec 1998) |
| biological response modifier | <pharmacology, oncology> A substance used in adjuvant therapy that takes advantage of the bodys own natural defense mechanisms to inhibit the growth of a tumour. (16 Dec 1997) |
| biological response modifiers | Substances that stimulate the body's response to infection and disease. The body naturally produces small amounts of these substances. Scientists can produce some of them in the laboratory in large amounts and use them in cancer treatment. Also called BRMs. (12 Dec 1998) |
Synonyms :
Synonyms :
Synonyms : Engineering, Biomedical
Synonyms : Enhancement Technologies, Biomedical Enhancements, Enhancement Technology, Enhancements, Biomedical, Technologies, Enhancement, Technology, Enhancement
Synonyms : Research, Biomedical, Research, Clinical, Research, Medical
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| biocoenosis |
A biocoenosis (alternatively, biocoenose or biocenose), termed by Karl M?ius in 1877, describes all the interacting organisms living together in a specific habitat (or biotope). It is more common to see the words, biotic community (or biological community or ecological community), used in this context, these all being identical concepts. The extent or geographical area of a biocenose is limited only by the requirement of a more or less uniform species composition (Kendeigh, 1961). ...
Ãâó: en.wikipedia.org/wiki/Biocoenosis
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| biochemical oxygen demand |
In ecology, biochemical (biological) oxygen demand (BOD) is an indicator for the concentration of biodegradable organic matter present in a sample of water. It can be used to infer the general quality of the water and its degree of pollution. BOD measures the rate of uptake of oxygen by micro-organisms in the sample of water at a fixed temperature and over a given period of time. ...
Ãâó: en.wikipedia.org/wiki/Biochemical_oxygen_demand
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| bioelectricity |
Bioelectromagnetism (sometimes equated with bioelectricity) refers to the static voltage of biological cells and to the electric currents that flow in living tissues, such as nerves and muscles, as a result of action potentials. Biological cells use bioelectricity to store metabolic energy, to do work or trigger internal changes, and to signal one another. ...
Ãâó: en.wikipedia.org/wiki/Bioelectricity
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| bioflavonoid |
Flavonoids are a group of chemical compounds, low molecular weight phenylbenzopyrones, found in all vascular plants. In the diet, flavonoids are found in many fruits, vegetables, teas, wines, nuts, seeds, and roots. Many of the medicinal actions of foods, juices, herbs, and bee pollen are directly related to their flavonoid content. ...
Ãâó: en.wikipedia.org/wiki/Bioflavonoid
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| biological psychiatry |
Biological psychiatry, sometimes referred to as bio-psychiatry, is a term used mainly by critics of mainstream mental health orthodoxy to describe what many believe are unproven and subjective diagnostic and treatment practices in the mental health field. ...
Ãâó: en.wikipedia.org/wiki/Biological_psychiatry
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| bio | organisms sharing a specified genotype or the genotype (or peculiarities) so shared |
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| bio | of or relating to a biotype |
| bio | (of twins) derived from two separate fertilized ova |
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