Términos

Se refiere a la rama de la sociología que estudia la relación entre pensamiento y sociedad, particularmente los procesos sociales y estructuras que producen o condicionan las formas y el contenido del conocimiento.

Rama de la sociología concerniente con el estudio de los orígenes, faces y leyes de la vida social e instituciones sociales.

Se refiere a la rama de la sociología que trata con las comunidades rurales y la vida rural.

Rama de la sociología que trata con las relaciones sociales y las estructuras en comunidades urbanas.

Aquellos que estudian o trabajan la ciencia relacionada con la sociedad, instituciones sociales y relaciones sociales, específicamente el estudio sistemático de su desarrollo, estructura y función de grupos humanos concebidos como procesos interactivos o como modelos organizados de conducta colectiva.

Axes of the Late Bronze Age, successors to winged axes, with an eyelet to the side to fasten the blade and a recess at the top to better keep the handle in place.

Sodium copper formate acetate found as a corrosion product on objects in which copper alloys are in contact with glass.

Beverages comprising primarily water into which carbon dioxide gas under pressure has been dissolved, either naturally or artificially. Soda may contain flavorings or other additives.

Un suave y ceroso, liviano, muy maleable de color blanco plateado, elemento metálico inestable del grupo alcalino. Tiene el símbolo Na en la tabla periódica y el número atómico 11. El sodio es el metal alcalino más común y el sexto elemento más abundante en la Tierra. Sólo aparece como un compuesto con otros elementos en la naturaleza. Tiene una fuerte afinidad por el oxígeno y otros elementos no metálicos. Es muy reactivo, arde con una llama amarilla, se oxida en el aire y reacciona violentamente con el agua. Sodio proporciona el catión principal (ion positivo) de los fluidos corporales extracelulares. Es un nutriente esencial en animales, ayuda a mantener el volumen sanguíneo, a regular el equilibrio de agua en las células, y mantiene funcionando los nervios.

Grayish white poisonous powder once commonly used as an herbicide and insecticide but retired due to its high toxicity. It is currently used for preservation of color in zoological and botanical specimens; in taxidermy, as ingredient in soap used for cleaning and sterilizing hides.

White, water soluble crystalline or granular powder, commonly known as baking soda or bicarbonate of soda. It is used as a leavening agent for baking; in medicine as an antacid; as a whitening agent in toothpastes; a fire retardant; a stain-absorbing ingredient in dry cleaning preparations. Chemical formula: NaHC03.

A white crystalline solid, usually encountered as a powder, used as a bleach for wood pulp, and as a versatile reducing agent which converts ketones and aldehydes to the related alcohols.

A water-soluble polymer, commonly known as carboxymethylcellulose (CMC), composed of the sodium salt of modified cellulose. A viscous gel when dispersed in water at low concentrations, CMC forms a tough, non-soluble film in reaction with heavy metal salts. In conservation, it is used as an adhesive and as a poultice for cleaning stone.

Chlorine compound commonly used as a bleaching agent for textiles and paper.

Sodium dehydroacetate is the sodium salt of dehydroacetic acid. It is a preservative and antimicrobial agent that has been used as a food additive and in aqueous deacidification of manuscripts.

Sodium dithionite (also known as sodium hydrosulfite) is a reductive bleaching chemical. Usage includes iron stain removal, and occasionally to treat corroded copper and silver artifacts in object conservation. It can also be used for purification of water and gas and as a sulfonating agent or a sodium ion source in industrial processes.

Colorless, odorless, crystalline salt used in very dilute solutions to fluoridate water and treat tooth decay. In higher concentrations, sodium fluoride is used as a fumigant, and a preservative for zoological specimens, paint, plaster, wood, and masonry.

The salt of formic acid, sodium formate is used as a neutral buffering agent. It sometimes appears spontaneously as a layer of white crystalline efflorescence on sodium-rich glass artefacts exposed to the pollutant gas formaldehyde.