منابع مشابه
The EcoSystem Aquarium Revisited
One way I judge how an article has been received is by how many letters or phone calls I get about it. Judging by the number of requests for more information on the Ecosystem Aquarium Filtration method, developed by Leng Sy, that I have received since writing articles in both Aquarium Fish Magazine (November 1997) and SeaScope (Fall 1997), I really struck a nerve. There are probably a number of...
متن کاملPropagation and cultivation of aquarium plant Cryptocoryne
Undoubtedly having lush and interesting plants in the aquarium, in addition to beauty, has a favorable effect on fish. These plants, in addition to create beauty in the aquarium space, provide an environment close to the natural habitat of ornamental fish. The benefits of using aquatic plants in the aquarium include adjusting the water hardness and pH, increasing the dissolved oxygen in the wat...
متن کاملEvaluation of aquarium antibiotic formulations.
The antibacterial activity of eight products marketed for the therapy and prophylaxis of diseases of ornamental fishes was tested. The products contained erythromycin, neomycin, a nitrofuran, penicillin, sulfa compounds, streptomycin, or tetracycline. When used at the concentration recommended by the manufacturer, the products failed to inhibit the growth of bacterial species known to be potent...
متن کاملMaintainence of parasitaemia – is it to die for?
One of the major differences between protozoan differentiation and metazoan differentiation is that protozoan cells normally retain potency during differentiation, which need not, therefore, be considered altruistic. Altruism does, however, arise at the level of the organism and consequently, protozoons have the potential to evolve altruistic traits. This is particularly true when, as with Tryp...
متن کاملAquarium, Computer, and Alaska Range Mirages
F my house in Fairbanks, Alaska, I see Mt. McKinley 250 km to the southwest. One hundred fifty kilometers to the south is Mt. Hayes, and 200 km to the southeast is Mt. Hadjukovich. But in the winter it is often hard to know what these Alaska Range mountains really look like. They appear as mirages, distorted into towering images, squashed images, inverted images, or floating images (see Figs. 1...
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ژورنال
عنوان ژورنال: EDIS
سال: 1969
ISSN: 2576-0009
DOI: 10.32473/edis-vm107-2003