Primary mineral definition

Substitute milk products may not be equivalent to cow s milk in terms of the quantity and in some cases the quality of fat, carbohydrate, vitamins, and minerals. Fat, carbohydrate, sodium, fiber, and energy, as well as the nutrients for which no U.S. RDA has been established, were not considered by FDA in its proposed definition of nutritional equivalency. In terms of quality, coconut oil, the primary and in most instances the sole fat used in substitute as well as imitation milk products, is a more saturated fat than milk fat and lacks linoleic acid, an essential fatty acid. Thus, a substitute dairy product formulated with hydrogenated coconut oil and sucrose and containing more so-... 

It should be kept in mind that, in spite of these major variations in the CO2-carbonic acid system, virtually all surface seawater is supersaturated with respect to calcite and aragonite. However, variations in the composition of surface waters can have a major influence on the depth at which deep seawater becomes undersaturated with respect to these minerals. The CO2 content of the water is the primary factor controlling its initial saturation state. The productivity and temperature of surface seawater also play major roles, in determining the types and amounts of biogenic carbonates that are produced. Later it will be shown that there is a definite relation between the saturation state of deep seawater, the rain rate of biogenic material and the accumulation of calcium carbonate in deep sea sediments. 

Paraffin followed by candelilla wax and microcrystalline waxes, and eventually by beeswax, are considered as the most effective moisture barriers derived from edible waxes (Morillon et al. 2002). There is no satisfactory chemical definition for the term wax which is used for a variety of products of mineral, botanical and animal origin that contain various kinds of fatty materials (Table 23.4). The term resins or lacs can also be used for plant or insect secretions that take place along resins ducts, often in response to injury or infection, and result in more acidic substances (Hernandez 1994). However, all waxes tend to contain wax esters as major components, that is, esters of long-chain fatty alcohols with long chain fatty acids. Depending on their source, they may additionally include hydrocarbons, sterol esters, aliphatic aldehydes, primary and secondary alcohols, diols, ketones, triacylglycerols, and so on. 

Cross references to the subject (primary) index are used for many simple inorganic compounds AICI3, see Aluminum chloride all minerals of definite composition, F2MgeNa2022Si8, see Richterite and the more common organic compounds, C4H4O, see Furan. 

Involutional (primary) osteoporosis is the manifestation of a metabolic bone disease in which the amount of normally mineralized bone matrix in affected patients has been reduced to a level below that of the normal population of the same age and sex. The disease is certainly of multifactorial origin, since genetic (Seeman etal. 1989), mechanical (e.g.. Frost 1988), nutritional (e.g., Hegsted 1986), and hormonal factors (e.g., Melton and Riggs 1988) can cause the severe impairment of the bone remodeling process (Eriksen etal. 1994) which underlies the observed reduction in bone mass and microarchitectural deterioration of bone tissue that lead to an increased risk of fractures at typical sites of the skeleton (for a definition, see Anonymous 1993)... 

From time to time I will inject some of my views concerning usefulness and safety of mineral fibers, recognizing that it is impossible to become expert on all issues surrounding mineral fibers. After two decades of intense interest in this subject it is difficult to avoid biases, many of which are based upon impressions gained by studying only a part of all information that has been published. To be conversant with all published literature dealing with this subject should be a fulltime occupation. In my case, the asbestos issues are definitely sidelines to my primary occupation. 

In geological formations, the content of heavy minerals may vary from 0 to 100%, and there is a tendency for some heavy mineral species to occur preferentially in certain kinds of rock. In any rock the minerals may be divided into primary and secondary rock minerals according to their origin. Primary rock minerals were formed at the same time as the rock containing them, while secondary rock minerals were formed as a result of reactions taking place within the host rock at some time after its formation. Rock-forming minerals may also be classified as essential or accessory. Essential minerals are those implied in the definition of the rock name, while accessory minerals are additional to the above definition, so that their absence would not necessitate a change in the rock name. Heavy minerals as they occur in rocks may be essential or accessory they are usually primary, but occasionally they are secondary. 

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