- Отрасли: Education
- Number of terms: 12355
- Number of blossaries: 0
- Company Profile:
Founded in 1946, Palomar College is a public two-year community college in the city of San Marcos, located in north San Diego County, California. Palomar offers over 300 associate degree, certificate programs and is designated by the U.S. Department of Education as an Hispanic-Serving Institution ...
The study of annual growth-rings of trees, usually for the purpose of chronometric dating logs found in association with relatively recent archaeological sites. Tree-ring sequences also are used as records of cycles in local climates.
Industry:Anthropology
Within the same species of warm-blooded animals, there is a tendency for darker, more heavily pigmented skin to occur in animals near the equator and lighter pigmented skin farther from it. This is because of the selective advantage the coloration provides. Heavy pigmentation protects from skin cancer caused by ultraviolet radiation from the sun. However, too much pigmentation can significantly reduce the skin's ability to produce vitamin D, which is necessary for the absorption of calcium and phosphorus from food. Open country close to the equator typically experiences high amounts of intense ultraviolet radiation while temperate and arctic regions have relatively little. Subsequently, heavy skin pigmentation is an advantage near the equator but a disadvantage farther away from it. Gloger's Rule was named after Wilhelm Gloger, a 19th century naturalist.
Industry:Anthropology
Within the same species of warm-blooded animals, individuals from populations living in colder environments usually have shorter appendages than do those from populations in warmer areas. This is because of the selective advantage it provides. Short arms, legs, and other appendages have relatively less skin surface area that can radiate heat into the surrounding environment. Subsequently, the body retains more of it. Allen's Rule is a corollary of Bergmann's Rule. Allen's Rule was named after Joel Allen, a 19th century naturalist.
Industry:Anthropology
Within the same species of warm-blooded animals, individuals from populations living in colder environments usually have greater body mass than do those from populations in warmer areas. This is because of the selective advantage it provides. A massive body produces more internal heat and radiates relatively less of it into the surrounding environment because the skin surface area is relatively smaller. Subsequently, a massive body produces and retains more heat. Bergmann's Rule was named after Carl Bergmann, a19th century naturalist. See Allen's Rule.
Industry:Anthropology
What the air temperature actually feels like to people. This varies with the relative humidity of the air. The higher the relative humidity, the higher the apparent temperature is even if the air temperature does not change because evaporation of sweat is progressively less efficient in cooling the body.
Industry:Anthropology
Use of a relative dating method that measures somewhat irregular occurring natural phenomena that have been cross-dated with at least one chronometric technique so that the dates are somewhat comparable from sites in one region to another. Calibrated relative methods could be considered to be somewhere between ordinary relative methods and radiometric methods in terms of their ability to produce dates that closely approximate the actual date of a sample. Amino acid racemization and paleomagnetic dating are generally considered to be either chronometric or calibrated relative methods.
Industry:Anthropology
Unusually low core body temperature resulting from prolonged exposure to a cold environment. This can be a life threatening condition. See hyperthermia.
Industry:Anthropology
Unusually elevated core body temperature resulting from fever or prolonged exposure to a hot environment. This can be a life threatening condition. See hypothermia.
Industry:Anthropology
Tree-living; referring to animals that are adapted to life in the trees. Arboreal animals spend most of their time scampering around in trees rather than on the ground, in the air, or water. See semi-terrestrial and terrestrial.
Industry:Anthropology
The yellow-red pigment of human bile. Small amounts of it are normally found in blood and urine. At high bilirubin levels, blood and urine change color and the skin becomes yellow or jaundiced. This is one of the symptoms of mismatched blood transfusions and mother-fetus incompatibility in blood type.
Industry:Anthropology
