- 行业: Education
- Number of terms: 12355
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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 ...
Una sorta di particella subnucleare positivamente caricato (costituito da 2 protoni e 2 neutroni) sprigionata da alcuni isotopi quando decadono o fissione.
Industry:Anthropology
A presumed human "race" consisting of Europeans and other closely related people. The classification is based on the discredited typological model. The term "Caucasoid" was derived from the Caucasus Mountains on the southeast fringe of Europe between the Black and Caspian Seas. This region was once thought to be the homeland of Indo-Europeans.
Industry:Anthropology
Ein Beispiel, das von einem Forscher ohne Voreingenommenheit überhaupt aktiviert ist. Mit anderen Worten, haben alle Proben in einer Population eine gleiche Wahrscheinlichkeit, ausgewählt. Dies kann erreicht werden, mithilfe eines Computers die Probe nach dem Zufallsprinzip auswählen.
Industry:Anthropology
Ein Gen, das von beiden vererbt werden kann Geschlechter aber in der Regel äußert sich nur Männchen oder Weibchen. Finden Sie unter Sex-gesteuerte gen.
Industry:Anthropology
A radiometric dating method based on the fact that trace amounts of radioactive atoms, such as uranium and thorium, in some kinds of rock, soil, and clay produce constant low amounts of background ionizing radiation. The atoms of crystalline solids, such as pottery and rock, can be altered by this radiation. Specifically, the electrons of quartz, feldspar, diamond, or calcite crystals can become displaced from their normal positions in atoms and trapped in imperfections in the crystal lattice of the rock or clay molecules. These energy charged electrons progressively accumulate over time. When a sample is heated to high temperatures in a laboratory, the trapped electrons are released and return to their normal positions in their atoms. This causes them to give off their stored energy in the form of light impulses (photons). This light is referred to as thermoluminescence (literally "heat light"). A similar effect can be brought about by stimulating the sample with infrared light. The intensity of thermoluminescence is directly related to the amount of accumulated changes produced by background radiation, which, in turn, varies with the age of the sample and the amount of trace radioactive elements it contains.
Industry:Anthropology
Eine Klasse von organischen Molekülen, die Fette, Öle und Wachse enthalten.
Industry:Anthropology
Eine vergleichsweise große Struktur in allen eukaryotischen Zellen gefunden. Es enthält die Chromosomen (Kern-DNA) und ist umgeben von einer nuklearen-Membran.
Industry:Anthropology
A number of conditions that occur together and characterize a particular disease or condition (e. G. , Klinefelter syndrome).
Industry:Anthropology
Einem feuchten, haarlosen Pad der Haut am Ende der Nase. Dies ist ein Merkmal der Feuchtnasenaffen (außer Koboldmakis), Hunde und einige andere Tiere.
Industry:Anthropology
Ora ha rifiutato il termine alternativo per la sindrome di Down.
Industry:Anthropology
