Albumin is a protein made by the liver. It makes up about 60% of the total protein in the blood and plays many roles. It keeps fluid from leaking out of blood vessels; nourishes tissues; and transports hormones, vitamins, drugs, and ions like calcium throughout the body.
The Mayan and other Mesoamerican cultures used a vigesimal number system based on base 20 (and, to some extent, base 5), probably originally developed from counting on fingers and toes. The numerals consisted of only three symbols: zero, represented as a shell shape; one, a dot; and five, a bar.he Mayan civilisation had settled in the region of Central America from about 2000 BCE, although the so-called Classic Period stretches from about 250 CE to 900 CE.
Early Mayan astronomers used the 260 day calendar to record the movements of the planets, sun and moon: it was a very sacred calendar. When used consecutively with the standard 365 day haab calendar, the two would align every 52 years. The Maya Long Count Calendar: The Maya developed another calendar, better suited for measuring longer periods of time. The Maya Long Count used only the haab or 365 day calendar. A date was given in terms of Baktuns (periods of 400 years) followed by Katuns (periods of 20 years) followed by Tuns (years) followed by Uinals (periods of 20 days) and ending with the Kins (number of days 1-19).