منابع مشابه
Assignment of Homarus capensis (Herbst, 1792), the Cape lobster of South Africa, to the new genus Homarinus (Decapoda: Nephropidae)
—Three species of nephropid lobsters have been recognized in the genus Homarus: the American and European lobsters, H. americanus and H. gammarus of the northwestern and northeastern Atlantic, respectively, and the Cape lobster of South Africa, H. capensis, few specimens of which have been studied until recently. Analysis of new specimens allows reconsideration of the systematic status of this ...
متن کاملCape Verde Praia , Santiago , Cape Verde
We prove a Noether’s theorem for fractional variational problems with Riesz-Caputo derivatives. Both Lagrangian and Hamiltonian formulations are obtained. Illustrative examples in the fractional context of the calculus of variations and optimal control are given.
متن کاملThe Cape Coloured People*
and the spleen usually becomes bigger. The pressure in the portal vein and its radicles may rise from the normal 8 to 11 mm. Saline to as much as 50 mm. Saline. Anastomotic channels between the portal and the systemic systems open up. The veins round the lower end of the oesophagus are the most important of these anastomotic channels and become enormously dilated. They bleed readily and massive...
متن کاملThe rhabdom of the lobster eye.
The spindle-shaped rhabdom of the lobster is a compact mass, 125)x long, by 25 /A by 25 JJ, at the widest point, composed of microvilli which extend from the 7 surrounding retinula cells. The characteristic feature is that the microvillar tubules are arranged in flat saddle-shaped plates, each about 2 ju. thick, which lie superimposed successively upon each other in a vertical stack along the o...
متن کاملThe Vitamin a of the Lobster
In many crustacea, including the lobster, the bulk of the vitamin A of the whole animal is concentrated in the eyes. Recently Fisher, Kon, and Thompson found that vitamin A extracted from the eyes of euphausiid crustacea has only about one half the biological potency of the same amount of the all-trans acetate or fish liver vitamin A. In the present experiments the vitamin A of the lobster eye ...
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ژورنال
عنوان ژورنال: Science
سال: 1912
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.36.915.58