Dreadlocks, also known as locs or dreads, are rope-like strands of hair formed by locking or braiding hair. Origins
Some of the earliest depictions of dreadlocks date back as far as 1600–1500 BCE in the Minoan Civilization, one of Europes earliest civilizations, centred in Crete (now part of Greece). Frescoes discovered on the Aegean island of Thera (modern Santorini, Greece) depict individuals with long braided hair or long dreadlocks.In ancient Egypt, examples of Egyptians wearing locked hairstyles and wigs have appeared on bas-reliefs, statuary and other artifacts. Mummified remains of Egyptians with locked wigs have also been recovered from archaeological sites.During the Bronze and Iron Ages, many peoples in the Near East, Anatolia, Caucasus, East Mediterranean and North Africa such as the Sumerians, Elamites and Ancient Egyptians were depicted in art with braided or plaited hair and beards. However, braids are not dreadlocks, and it is not always possible to tell from these images which are being depicted. Etymology
The history of the name "dreadlocks" is unclear. Some authors have speculated that the "dread" component could refer to the reaction of British soldiers upon encountering Mau Mau fighters who had this hairstyle. History
In Ancient Greece, kouros sculptures from the archaic period depict men wearing dreadlocks.The style was worn by Ancient Christian Ascetics in the Middle East and Mediterranean, and the Dervishes of Islam, among others.
Supercritical carbon dioxide extraction of olive leaves has been shown to require less solvent per measure of leaf than a traditional extraction – 141.7 g (5.00 oz) CO2 versus 194.4 g (6.86 oz) ethanol per 1 g (0.035 oz) olive leaf. Heated, pressurized, subcritical water is even cheaper, and is shown to have dramatically greater results than traditional extraction. It requires only 4.01 g (0.141 oz) water per 1 g (0.035 oz) of olive leaf, and gives a yield of 76.75% mannitol. Both super- and subcritical extractions are cheaper, faster, purer, and more environmentally friendly than the traditional extraction. However, the required high operating temperatures and pressures are causes for hesitancy in the industrial use of this technique. History
Julije Domac elucidated the structure of hexene and mannitol obtained from Caspian manna. He determined the place of the double bond in hexene obtained from mannitol and proved that it is a derivative of a normal hexene. This also solved the structure of mannitol, which was unknown until then. Controversy
The three studies that initially found that high-dose mannitol was effective in cases of severe head injury were the subject of an investigation published in 2007. Although several authors are listed with Dr. Julio Cruz, it is unclear whether the authors had knowledge of how the patients were recruited. Further, the Federal University of São Paulo, which Cruz gave as his affiliation, has never employed him.