نتایج جستجو برای: aquarium and
تعداد نتایج: 16827435 فیلتر نتایج به سال:
Nautilus is often used as an analogue for the ecology and behavior of extinct externally shelled cephalopods. Nautilus shell grows quickly, has internal growth banding, and is widely believed to precipitate aragonite in oxygen isotope equilibrium with seawater. Pieces of shell from a wild-caught Nautilus macromphalus from New Caledonia and from a Nautilus belauensis reared in an aquarium were c...
the objective of this study was to compare growth performance and feed conversion ratios of rainbow trout (oncorhynchus mykiss) and brook trout (salvelinus fontinalis) juveniles in monoculture and duo-culture in freshwater and seawater under aquarium conditions. the fish were about 2-months old hatchery-reared brook and rainbow trout with initial weights of 0.934±0.033 (n=360) and 1.014±0.019 (...
The aquarium trade moves thousands of species around the globe, opening the door to unwanted organisms being released into fresh and marine waters, with subsequent adverse ecological and economic impacts. Unlike ballast waters, the commerce of ornamental pets and the aquarium trade have only recently been recognized as major pathways for the introduction of fish, invertebrates and plants, with ...
the petrochemical industry is the most important and most widely active industries in the country. due to the variety and complexity of industrial products, it also produces a wild range of pollutants. mercury waste disposal from chlor-alkali units is one of the fundamental problems of this industry. various studies have shown that phytoremediation system for removal of mercury from aqueous sol...
At the base level of creative practice, artists often reap inspiration from their surroundings. Writers might eavesdrop on a conversation in a coffee shop and then use it in a novel, and a composer might transform sounds from his urban environment into an orchestral work. In Kelly Lanphier’s case, working at the Aquarium of the Pacific in Long Beach, California, early on created a substantial i...
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