Cotta

Barium carbonate prevents formation of scum and efflorescence in brick, tile, masonry cement, terra cotta, and sewer pipe by insolubilizing the soluble sulfates contained in many of the otherwise unsuitable clays. At the same time, it aids other deflocculants by precipitating calcium and magnesium as the carbonates. This reaction is relatively slow and normally requites several days to mature even when very fine powder is used. Consequentiy, often a barium carbonate emulsion in water is prepared with carbonic acid to further increase the solubiUty and speed the reaction. 

MI(25)113 M. Cotta Ramusino, M. Bartolomei, and L. Ruflni, J. Inclusion... 

Many of the materials used in the most advanced technologies are made from one of the oldest known materials, common clay. Most clays used commercially are oxides of silicon, aluminum, and magnesium. China clay contains primarily kaoli-nite, a form of aluminum aluminosilicate that can be obtained reasonably free of the iron impurities that make many clays look reddish brown, and so it is white. However, other clays contain the iron oxides that cause the orange color of terra cotta tiles and flower pots. 

Abascal-M., R., Harbottle, G., Sayre, E. V., Correlation Between Terra Cotta Figurines and Pottery from the Valley of Mexico and Source Clays by Activation Analysis, In Archaeological Chemistry, Adv. Chem. Ser., 138, 81-99 (1974). 

Drea, C.M. and Scordato, E.S. (2007) Olfactory communication in the ringtailed lemur (Lemur cotta) form and function of multimodal signals. In J. Hurst, R. Beynon, C. Roberts and T. Wyatt (Eds.), Chemical Signals in Vertebrates 11. Springer Press, New York, pp. 80-90. 

Benigni, R., Andreoli, C., Conti, L., Tafani, P., Cotta-Ramusino, M., Carere, A., Crebelli, R. Quantitative structure-activity relationship models correctly predict the toxic and aneuploidizing properties of halogenated methanes in Aspergillus nidulans. Mutagenesis 1993, 8, 301-305. 

Transportation Long-distance transport consumes energy and causes pollution. Heavy imported terra-cotta pots like the ones above may seem like a bargain, but the environmental costs are high. 

Pots on display Vintage terra-cotta pots can be as attractive as the plants within them, and many gardeners collect them avidly. Clay pots do, however, dry out guite guickly to save water, display them somewhere that is shaded during the hottest part of the day. 

How often a container plant needs watering depends on the plant type, its size in relation to the container, the type of container (terra-cotta dries out more quickly than plastic), the site (a windy site increases the demand for water), the weather, and the season. Never let containers dry out—plants are much more prone to problems if they are short of water, and dry potting mix is difficult to rewet. In practice, most container plants need daily watering... 

Qureshi, N., Hughes, S., Maddox, I.S., and Cotta, M.A. (2005) Energy efficient recovery of butanol from model solutions and fermentation broth by adsorption. Bioprocess Biosyst. Eng., 27, 215. 

O COTTA, YG PEP APLG7-7 M.3.S 31x44 O MOM SPAPK COirPiOIlGAGLTAPE ililSli G... 

Griffin, H.L. Greene, R. V. Cotta, M. A. (1992) Industrial alkaline protease fran shipworm bacteria. US Pat. Appl. US 880,912, 15 Sqrt. to US Dqrt Agriculture. Chan. Abstr., 1993,118, 142526e. 

GtfMMoi1 MaVafe tedudeFites(libraries( Stimulus Option (Paia Cotta cion f PmbeWwdow ... 

Kobell, Franz von, Geschichte der Mineralogie, J. G. Cotta, Munich,... 

Dinitro-3-hydroxybenzaldehyde gives dark crimson needles of 2,4,6-Trinitro-hydroxy-benzaldehyde- [4-nitro-phenylhydrazone], 02NC6H4NN CC6H(N02)3 0H which explode at 228-30°. Its p-Bromophenylhydrazone, deep olive green crystals with a metallic luster, also explodes violently at 218-20°. The p-nitro-phenylhydrazone derived from 2,6-dinitrohydroxy-benzaldehyde, deep terra cotta crystals, explodes at 240-42°, but the corresponding p-bromophenyl-... 

Type 4 Pottery Hand Grenade had spherical terra cotta body 3 inches in diam with wall 7/16 inch thick. It contd 3.5 oz of Type 88 Explosive and had 4—5 secs delay (Ref 2, p... 

HOFMANN A., 1979, LSD Mein Sorgerkind, Klett-Cotta, Stuggart, Germany. Translated into English by J. Ott, 1980, LSD My Problem Child, McGraw-Hill, New York, NY. Translation reprinted in 1983, J.P. Tarcher, Los Angeles, CA. 

Dinitro (m-anisaldebyde)-(4 -nitropbenyl-kydrazone), terra-cotta ndls rap > 300°. Was prepd by treating 4,6-dinitro-3 methoxybenzaI-dehyde with p-nitrophenylhydrazone as described in Ref 2... 

Drain-tiles, or terra-cotta pipes, are larger than encircled by two bands of letters those of the outer ... 

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