Términos

Fast-setting, strong adhesive based on ethyl-2-cyanoacrylate polymers. Most commercial formulations also contain stabilizers, thickeners, and catalysts.The first cyanoacrylate adhesive was made in 1941, but not marketed until 1958. The glues set rapidly upon exposure to ultraviolet radiation or moisture. When cured, they form an extremely strong bond that is fairly insoluble. Cyanoacrylate adhesives have been used for gluing glass, ceramics, other hard materials, and in medical and dental applications. Some cyanoacrylate glues may lose adhesive strength with time; ultraviolet light and contact with alkaline materials (glass and some stones) will accelerate the degradation process.

General term for any of a large and varied group of prokaryotic, usually photosynthetic, microorganisms that contain (blue) photocyanin and (green) chlorophyll. They closely resemble eukaryotic algae in many respects, leading to past misidentification as such.

Vasijas que tienen una sola manija enrollada en lo alto; funcionan como cucharas para servir vino de una crátera. El cyathos tiene forma de taza de té y tiene paredes finas. Es sobre todo forma de figura negra y fue copiada originalmente de una forma etrusca.

Cybernetic organisms, often depicted in science fiction works as humans with machine parts.

Gymnosperms that are related to the conifers but resembling palms and having affinity with tree-ferns. Characterized by a crown of large compound leaves and a stout trunk; examples exist in tropical and subtropical regions today, but they flourished in great variety and abundance during the Jurassic Period.

The activity or sport of riding a bicycle or any cycle.

A wax-like volatile cyclic alkane used as a consolidant for various materials; and as a temporary fixative for water-sensitive media on paper.

An oily liquid ketone used as an industrial solvent for paints, coatings and plastics. It is also used to clean metals, remove spots in fabrics, and as an activator in oxidation reactions.

A vapor phase inhibitor used in steam generation and distribution systems required for heating or humidification to protect the ferrous components of these systems from corrosion.

One of two families containing anteaters.

Order of comb jellies, distinguished by having spherical or oval bodies and branched, retractable tentacles.

Members of the genus containing several living species and at least 10 extinct species of large waterfowl characterized by long-necks, heavy-bodies, large feet, graceful swimming style, and flying with slow wingbeats and with necks outstretched. Many swans are white. Swans are revered in many religions and cultures, especially Hinduism. They are common symbols in art around the world.

Standard tall lykythoi of cylindrical shape, typically white-ground, and used primarily in funerary rituals, which is known from their excavation from cemeteries and the subjects depicted on them. Late in the fifth century some massive examples of the shape were produced, serving perhaps as equivalents for stone grave markers.

Outline or form delimited by two ends that are equal and parallel circles, and the intervening curved surface is such as would be traced out by a straight line moving parallel to itself with its ends in the circumferences of these circles.

In wooden barrel-making, bung borers designed to allow the boring of the bunghole and tap hole in one step, rather than the two-step process of a drilling pilot hole and then enlarging the pilot hole to the correct size with a tapered reamer.

Drafting and drawing instruments for copying or tracing the contour of solid objects, such as sculpture profiles and moldings; invented in 1841 by Robert Willis, Cambridge University.

Family containing two genera and two species of flying lemurs, which are nocturnal, arboreal gliding mammals found in South-east Asia. They are about the size of a domestic cat and characterized by lateral skin membranes extending from the forelimbs to the tail, by means of which they make long gliding leaps from tree to tree. Although flying lemurs share some characteristics with certain bats (flying foxes), they are most closely related to the primates.