Geographic area, composition

Lglesias, M. T., de Lorenzo, C., Polo, M. D., Martin-Alvarez, P. J., and Pueyo, E. (2004). Usefulness of amino acid composition to discriminate between honeydew and floral honeys. Application to honeys from a small geographic area. /. Agric. Food Client. 52, 84-89. 

A mineral is a naturally occurring, crystalline inorganic compound with a specific chemical composition and crystal structure. Minerals are commonly named to honor a person, to indicate the geographic area where the mineral was discovered, or to highlight some distinctive chemical, crystallographic, or physical characteristic of the substance. Each mineral sample has some obvious properties color, shape, texture, and perhaps odor or taste. However, to determine the precise composition and crystal structure necessary to accurately identify the species, one or several of the following techniques must be employed optical, x-ray diffraction, transmission electron microscopy and diffraction, and chemical and spectral analyses. 

No studies were located regarding the tissue distribution of 1,4-dichlorobenzene in humans after inhalation exposure to 1,4-dichlorobenzene. The compound has been found, however, in human blood, fatty tissue, and breast milk, presumably as a result of exposure via inhalation. In a study of Tokyo residents, detectable levels of 1,4-dichlorobenzene were found in all of 34 adipose tissue samples and all of 16 blood samples tested (Morita and Ohi 1975 Morita et al. 1975). In a national survey of various volatile organic compounds (VOC) found in composites of human adipose tissue, samples were collected from persons living in the nine geographic areas that comprise the United States (within this survey). 

The percentage of miners showing definite radiographic evidence of either simple or complicated pneumoconiosis has varied considerably in different geographic areas factors responsible for this difference include respirable dust levels, the number of years of exposure, and the physical and chemical composition of the coal. ... 

Although as already mentioned, the information on the chemical composition of natural, low temperature chlorites in sedimentary rocks is limited some new data has been gathered using microprobe analysis of grain mounts or rock thin sections. The samples studied come from rather different geographic areas—western Montana, Algeria and the Franco-Italian Alps and African off-shore Atlantic coast shelf sediments. 

Surveys of the composition of either individual cow samples or of bulked herd milk samples within a geographic area over periods of a few months exhibit considerable variation, particularly in fat and protein contents. Lactose and ash contents vary within narrower limits. The extent of the variation can be expressed as the standard deviation a and by the coefficient of variation (CV), which is the standard deviation divided by the mean ... 

General Changes in Corn Grain Composition. Samples of 18 varieties of corn, including hybrids and native varieties from distinct geographical areas of Mexico, were studied (see Figure 3 and Table IV). From Tables V and VI the most notable differences between the untreated and lime-treated corns are demonstrated an increase in mineral content and decreases in total protein, crude fiber, and ether extract. 

Tap water is defined in this chapter as the water that is supplied in the Washington, DC area. The composition varies, mostly by season. Tap water composition may vary greatly among geographical areas. 

The Rhine River (above Lake Constance) averages a Mg2+ composition of 9 mg L-1 (see Stumm, 1996). If the annual runoff in that area is approximately 1 m3 per m2 of geographical area, estimate the erosion rate of Mg2+ (as MgC03), in g m 2 y 1. 

Although a great mass of data on chemical composition of fish has accumulated, the accuracy of the determinations is usually poor. The variations occurring from one individual to another of the same species, and such factors as season or geographic area, have frequently been neglected and the sampling procedures used are often open to criticism. A project for the collection of more representative data has been recently set up by the Fish and Wildlife Service (Stansby, 1954). 

A = the crumbling rate constant for the composite in the given geographical area (see Fig. 15.27), when the antioxidant is completely depleted. The constant A is related to the linear portion of the respective curve,... 

TABLE 15.30 Relative rates of crumbling of the composite boards in some geographical areas in the United States... 

Composition of Marine Aerosols tuith Respect to Geographic Area... 

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