Mexico samples well

We have been able to compare our samples to a small group of majolica sherds from Spain and to a reasonably large group of Precolumbian sherds from Teotihuacan. The majolica sherds from Caribbean sites agree in composition with the Spanish specimens, and those from sites in Mexico City have compositions sufBciently similar to the sherds from Teotihuacan, considering the secondary deposits of carbonates of calcium which are in the majolica sherds and not in the Precolumbian sherds. The presence of these deposits of carbonates of calcium in the majolica and their absence in the Precolumbian sherds was determined by petrographic examination and x-ray diflFraction as well as by elemental analysis. 

The genetic diversity of wild sunflower allowed researchers to obtain a number of varieties of defined characteristics. The North Central Regional Plant Introduction Station (Iowa), which gathers dozens of species, has distributed materials to researchers and companies interested in either the study or use of these materials. The sunflower germplasm collection of the U.S. Department of Agriculture (USDA) is the largest and most complete collection worldwide, including wild materials from 48 U.S. states, as well as samples from Canada and Mexico. The... 

Those mushroom species described above are based on samples collected from islands thus, it is quite logical to expect finding those same species growing on the Asian mainland as well. Soon after Earle published his description of Stropharia (Psilocybe) cubensis in a 1906 edition of a Cuban agriculture journal, Patouillard proposed the species name Naematoloma caerulescens for his own samples of the same species, which were collected in Tonkin (Vietnam) in 1907. In Thailand and Cambodia, Heim found Ifuiting bodies of the species Psilocybe cubensis, providing the first sample from outside of Mexico used by Hofinann and his collaborators to confirm the presence of psilocybin in the fruiting bodies. 

Results of batch leach tests performed on tailings from the Grants Mineral Belt, New Mexico are summarized in Tables IV and V. These results represent the average of two analyses on the acid leach tailings samples. Table IV contains the elemental concentrations of the sand and silt and clay-sized fractions, as well as the soluble concentration of each element found when 100 g of material is leached with 250 mL of sodium hexametaphosphate solution. The right-most column presents the ratio of the elemental concentration associated with the silt and clay-sized fraction to that of the sand-sized fraction, and it is presented as an enrichment factor. The high enrichment factors for As, Mo, Cr, Se, and V may be due to the fact that these elements are adsorbed onto jarosite, montmorillonite, and ferric oxyhydroxides (9-141. Speciation... 

The Occupational Safety and Health Administration (OSHA) standard for exposure to asbestos defines a fiber as one at least 5 p,m long with a length/diameter ratio of at least 3.0. The TLV-TWA is 0.1 fibers/cc of air the excursion limit for a 30-min sampling period is 1.0. The standard, published in 29 CFR 1910.1001 specifies sampling methods and fiequencies as well as the analytical procedure (NIOSH Method 7400). Some countries allow higher concentrations of fiber. In Brazil, Canada, and Mexico, for example, the TLV is 2 fibers/ml. In the European Union, the TLV is 0.6 fibers/ml (0.25 in Germany), with an action level of 0.2. 

In addition, several species of Croton (Euphorbiaceae) yield a red resin traded as dragon s blood Edwards et al. mention C. draco from Mexico Pearson and Prendergast (2001) list C. aromaticus and C. gossypiifolius, the former from Sri Lanka and the latter from Trinidad, as well as an unidentified sample of Croton-derived sangre de drago from Venezuela. Compositional studies of Croton dragon s blood has been published by Pieters et al. (1992). Schweppe (1992) states the nordin is a principle colouring constituent of C. draco. 

Sohio Western L-Bar, New Mexico UMTRA - Mine (Title II) 1.34 0.96 — Maximum and minimum, plume lengths are approximate few wells available for measuring natural U sampling... 

Widespread human exposure to phthalates has been documented by independent studies and representative samples in the U.S., as well as European countries, Mexico, Taiwan, and other populations (Meeker and Ferguson 2012). Phthalates have been measured in indoor and outdoor air and house dust, foods and food packaging, consumer products, and other media (Rudel et al. 2003 Dodson et al. 2012 Schecter et al. 2013 Rudel et al. 2010, 2011). 

The second hypothesis suggests that, to form a certain compound, we not only need atoms of the right kinds of elements, but specific numbers of these atoms as well. This idea is an extension of a law published in 1799 by Joseph Proust, a French chemist. According to Proust s law of definite proportions, different samples of a given compound always contain the same elements in the same mass ratio. Thus, if we were to analyze samples of carbon dioxide gas obtained finm different sources, such as the exhaust from a car in Mexico City or the air above a pine forest in northern... 

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