diatomaceous earth

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diatomaceous earth:

see diatomdiatom
, unicellular organism of the kingdom Protista, characterized by a silica shell of often intricate and beautiful sculpturing. Most diatoms exist singly, although some join to form colonies.
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diatomaceous earth

[¦dī·ə·tə¦mā·shəs ′ərth]
(geology)
A yellow, white, or light-gray, siliceous, porous deposit made of the opaline shells of diatoms; used as a filter aid, paint filler, adsorbent, abrasive, and thermal insulator. Also known as kieselguhr; tripolite.

diatomite, diatomaceous earth, kieselguhr

A white or light gray, chalky, natural siliceous material; obtained by mining deposits of fossil remains of small marine life; used as an extender in paints, as an aggregate in lightweight concrete, as a waterproofing material in portland cement, as a filter for water, and as an abrasive.
References in periodicals archive ?
Candida rugosa lipase, Celite 545, Sephadex G-25 (medium), chitosan (low molecular weight), glycerol, caprylic acid, and sodium hydroxide (purity > 98%) were purchased from Sigma Aldrich (St.
Ltd., advertisement in Chemistry in Canada promoted CELITE, a trademarked brand name for diatomaceous earth, for the filtration of consumer and industrial goods.
Kanwar, "Properties and stability of celite immobilized lipase of a thermophilic Bacillus sp.
Air benzene sampling was performed using Chromosorb 106[R] stainless steel passive samplers (Celite Corp.) in Milan and Genoa, and Radiello passive samplers (Supelco) in Cagliari.
El jarabe se clarifico con carbon activado en un proceso similar al reportado previamente; posteriormente se filtro al vacio a traves de una capa de celite. Luego el jarabe clarificado fue tratado con una resina cationica y una anionica hasta que tuviera una conductividad menor a 50 |j.S/cm.
was dissolved in MeOH, treated with activated charcoal and filtered over celite. The methanolic solution was passed through an ion-exchange resin (Amberlite IRA400 OH) column, evaporated and further purified by preparative chromatography on silica gel (mobile phase: MeOH:water:NH3 (25%), 15:3:1) to obtain compound 3 (Rf 0.3, blue fluorescent band under 365 nm, red after treatment with Dragendorff s reagent) (yield - 140 mg).
Se utilizaron crisoles para fibra ASTM 40-60 mm a peso constante y se pesaron 0.500 g de celite Sigma C8656, a los que se agregaron 10 ml de etanol al 78% y se filtro la capa formada bajo vacio, las muestras se secaron en estufa a 130[grados]C por 1.5 h y se realizo su pesaje.
Celite (Sigma) was used as a marker; it was included at 20 g/kg in experiment 1 and at 10 g/kg in experiment 2.
Dorf also held top leadership positions at Celite Systems, Nortel Networks, Synch Research, AT&T Network Systems, AT&T Paradyne, Cullinet Software, and IBM.
50 [miro]L de cefatina ativada (Celite, Biolab), 50 [micro]L de plasma de coelho e 10 [micro]L da solucao de PS.
Hemochron Celite Activated Clotting Time (ACT) (International Technidyne Corporation, Edison, NJ, USA).