"A Fountain of Blood"
نویسندگان
چکیده
منابع مشابه
Fountain rainbows.
We present the first measurements of radiance spectra of rainbows. The bows on two sunny days (3 and 6 June 2008) were produced by the fountain in the Parque de las Ciencias, Granada, Spain, that consists of a rectangular perimeter of 40 spray nozzles. Optical thickness of the spray from each nozzle was approximately 0.5. Spectral purity of the primary bow was highest for orange and blue, reach...
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Just a few years ago, the rules of blood vessel formation seemed simple. Endothelial cells emerged from the blood islands of the embryo to form primitive tubes, the precursors of the vasculature. Smooth muscle cells, recruited locally from various germ layers, invested the endothelial tubes, forming the sandwich structure of mature arteries and veins. Mechanical or metabolic injury supposedly s...
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ژورنال
عنوان ژورنال: Ufahamu: A Journal of African Studies
سال: 1988
ISSN: 2150-5802,0041-5715
DOI: 10.5070/f7161016967