Prefix used to designate the human form of an enzyme. For example, hGH is human growth hormone.
- Browse Related Terms: Diabetes, endocrine interference, GH, growth regulator, growth retardant, H, hGH, human growth hormone, Insulin, parahormone, pheromone, replacement therapy, somatocrinin, Somatostatin, Somatotrophin, somatotropin
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In solar-terrestrial terms, this absorption line of neutral hydrogen falls in the red part of the visible spectrum and is convenient for solar observations. The H-alpha line is universally used for patrol observations of solar flares.
- Browse Related Terms: Active Longitude, Active Region (AR), burst, Comprehensive Flare Index (CFI), H-Alpha, Homologous Flares, Hyder Flare, Limb Flare, Loop Prominence System, LPS, Magflare, Microwave Burst, Post-Flare Loops, White Light Flare, X-Ray Background, X-Ray Burst, X-Ray Flare Class
(Geomagnetic Elements) In solar-terrestrial terms, the components of the geomagnetic field at the surface of the earth. In SESC use, the northward and eastward components are often called the H and D components, where the D component is expressed in gammas and is derived from D (the declination angle) using the small angle approximation.
- Browse Related Terms: ASAPTRAN, BR, Crochet, Direct Solar Radiation, Fugitive dust, Geomagnetic Elements, Geomagnetic Storm, H-component of the Geomagnetic Field, Magnetic Bay, NWD, RDS, RTRN, Sudden Commencement (SC), Sudden Impulse (SI+ or SI-)
- A measure of the expansion rate and age of the universe. It appears to be between 60 and 80 kilometers per second per megaparsec. (A megaparsec is equal to 3.26 x 106 light-years.)
- Browse Related Terms: Dynamics, Finite, H0, Hubble Constant, Initial Conditions, Intensity, Light Year, Nought, static, Visible Universe
Living environment of a species, that provides whatever that species needs for its survival, such as nutrients, water and living space.
The area where a plant or animal lives and grows under natural conditions. Habitat includes living and non-living attributes and provides all requirements for food and shelter.
- Browse Related Terms: Biodiversity, Biota, Biotic community, Bryophytes, cellulose, Diversity, Evapotranspiration, Habitat, Influent, lignin, Microalgae, Plant association, Secondary succession, Seral stages, Short rotation energy plantation, Succession, Wetlands
- The place, including physical and biotic conditions, where a plant or animal lives. See also Aquatic habitat
- Browse Related Terms: Appropriate Management Level (AML), Aquaculture, Aquatic biota, Aquatic ecosystem, Biogenic source (emissions), Biota, Browse, Bryozoan, Burrow, cavity, Collection, Community, Crustaceans, Ecoregion, Fauna, Habitat, Harassment, Invertebrate, Montane, NatureServe Explorer, Plankton (planktonic), Terrestrial, Wetlands, Zoomorphic
The place and its associated environmental conditions where an organism naturally lives, grows, and reproduces; such conditions include characteristics of the soil, water, and biologic community (for example, other plants and animals).
- The area or type of environment in which a plant or animal normally lives or occurs.
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A change in the particular environment or place where an organism or species lives. Usually implies changes made to the environment that adversely affect the function of the ecosystem, although not completely or permanently.
- Browse Related Terms: Aquatic opportunists, Big game, Ecotones, Extirpation, Facultative wetland vegetation species, Fire-tolerant species, Flats wetland, Habitat alteration, Invasive species, Lek, Megafauna, Nongame species, Scarify, Species of Special Concern, Translocation
A habitat area designated by a Fishery Management Council under the Magnuson-Stevens Fishery Conservation and Management Act of 1976 to help focus conservation efforts in localized areas that are vulnerable to degradation or are especially important ecologically.
- Browse Related Terms: Biological Opinion (BO), Essential Fish Habitat (EFH), Fish & Wildlife Service (FWS), Fishery Management Councils, Fishery Management Zone, Habitat Areas of Particular Concern (HAPC), Hazardous Waste Indicators, Jeopardy opinion, Magnuson-Stevens Fishery Conservation and Management Act, No jeopardy opinion, Sensitive species
Decline in habitat quality that accompanies non-natural forms of disturbance.
- Browse Related Terms: Carrying Capacity, Compensation, Desert focal bird species, Ecological resources, Endangered Species Act of 1973 (ESA), fragmentation, Fragmentation of habitat, Habitat degradation, Obligate species, Riparian obligate species, Sand dune obligate species, Shrub-steppe, Shrubsteppe obligate, Snag, steppe, Wildlife corridor, Xeric (habitat)
Division of large tracts of natural habitat into smaller, disjunct parcels.
- Browse Related Terms: Agricultural Districts/Preservation Areas, Agricultural Preservation Restriction Program (APR), Conservation Easements, Easement, Eminent Domain, Habitat Fragmentation, Land use, Purchase of Development Rights, Taking, Transfer of Development Rights (TDR), Upzone, variance
- Browse Related Terms: artificial medium, bridge, chemically-defined medium, defined, exotoxin, explant, fortify, free-living conditions, habituation, isolation medium, Jiffy potä, Media, nutrient gradient, organ culture, osmoticum, passage, production environment, reversal transfer, serial float culture, spent medium, Steward bottle, suspension culture, Tissue culture
Abbreviation for human artificial chromosome.
- Browse Related Terms: BAC, chromosome aberration, HAC, human artificial chromosome, mega yeast artificial chromosome, semi-sterility, YAC
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A sex-linked hereditary bleeding disorder in which it takes a long time for the blood to clot and abnormal bleeding occurs. This disease affects mostly males.
- Browse Related Terms: androgen, follicle stimulating hormone, gonad, haemophilia, heterogametic, homogametic, oestrogen, oestrous, oestrous cycle, oestrus, spermatogenesis, spermatozoon, testis, testosterone