As a rule, the gill area is greater in fast-moving crabs (Portunids) than in sluggish bottom dwellers; decreases progressively from wholly aquatic, to intertidal, to land species; and is greater in young crabs than in older crabs. Often the gills are enclosed in protective chambers, and ventilation is provided by specialized appendages that create the respiratory current. As in cephalopod mollusks, oxygen utilization is relatively high—up to 70 percent of the oxygen is extracted from the water…
vitamin D), antioxidants (e.g. vitamin E), and mediators of cell signaling and regulators of cell and tissue growth and differentiation (e.g. vitamin A). The largest number of vitamins (e.g. B complex vitamins) function as precursors for enzyme cofactor bio-molecules (coenzymes), that help act as catalysts and substrates in metabolism. When acting as part of a catalyst, vitamins are bound to enzymes and are called prosthetic groups. For example, biotin is part of enzymes involved in making…
Adipic acid is mainly use as monomer in manufacture Nylon 6/6 fiber, plasticizer, grease, polyurethane etc. There are several countries in the world that manufacturing the adipic acid. But there also countries that just is a supplier for this adipic acid to any factory that need adipic acid in their countries. The main countries that produce adipic acid are United State of America and also China. Almost ninety percent of adipic acid manufactured in United State of America is used to produce…
Gold margins are standardized because of adornment+ investment factor. However, quest for greater margins is driving diversification from gold jewellery products. Demand for gold jewellery remains very strong because of cultural traditions, Gold jewellery sales - for weddings, in particular - will continue to generate volume growth for jewellery retailers. Platinum and diamond jewellery sales will generate margin growth. The shift to more profitable diamond jewellery has been smooth because…
Benefits of direct marketing: Buyers • Home shopping- fun, convenient and hassle free, time saving, larger variety. • Comparative shopping possible- browsing through online catalogues. • Somebody else other than buyer can order goods. • Business customers- learn about new products & services- time saved in meeting sales people. Sellers • Buy mailing lists- any group : left handed, overweight, millionaires • Personalize and customize the messages- build continuous relationship with…
Unfortunately, some companies have mismanaged their greatest asset—their brands. This is what befell the popular Snapple brand almost as soon as Quaker Oats bought the beverage marketer for $1.7 billion in 1994. Snapple had become a hit through powerful grassroots marketing and distribution through small outlets and convenience stores. Analysts said that because Quaker did not understand the brand’s appeal, it made the mistake of changing the ads and the distribution. Snapple lost so much…