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Schematic representation of a Euglena cell with red eyespot (9) Schematic representation of a Chlamydomonas cell with chloroplast eyespot (4). The eyespot apparatus (or stigma) is a photoreceptive organelle found in the flagellate or (motile) cells of green algae and other unicellular photosynthetic organisms such as euglenids.
Euglena is a genus of single cell flagellate eukaryotes.It is the best known and most widely studied member of the class Euglenoidea, a diverse group containing some 54 genera and at least 200 species.
Late medieval gothic plate armour with list of elements. The slot in the helmet is called an occularium. This list identifies various pieces of body armour worn from the medieval to early modern period in the Western world, mostly plate but some mail armour, arranged by the part of body that is protected and roughly by date.
Hauberk, an earlier form of body armor, was used to defend against swords, knives, etc. Chain mail , an ancient form of personal armour consisting of linked metal rings which has also been used to protect against shrapnel and low-velocity ammunition, like the Spanish mail used by Comanche chief Iron Jacket to protect his body from revolver rounds.
The Technische Richtlinie (TR) Ballistische Schutzwesten is a regulation guide in Germany for body armor. It is mainly issued for body armor used by the German police, but also for the German armed forces and civilian available body armor. Producers have to meet the criteria of the TR, if they want to participate in open competitive bidding ...
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Dragon silk is a material created by Kraig Biocraft Laboratories of Ann Arbor, Michigan from genetically modified silkworms to create body armor. Dragon silk combines the elasticity and strength of spider silk. It has the tensile strength as high as 1.79 gigapascals (as much as 37%) and the elasticity above 38% exceeding the maximum reported ...
Lamellar armour is a type of body armour made from small rectangular plates (scales or lamellae) of iron, steel, leather , bone, or bronze laced into horizontal rows. Lamellar armour was used over a wide range of time periods in Central Asia , Eastern Asia (especially in China , Japan , Korea , Mongolia , and Tibet ), Western Asia , and Eastern ...