منابع مشابه
A Family That Grows From Within
Hydrolytic cleavage of large, inert proteins into smaller, active products is a common event in biology. The active products usually enjoy brief useful lifespans before they themselves are cleaved into inactive fragments. Prototypic participants in this process include clotting factors, complement, and digestive enzymes. Angiotensin II (Ang II) was the first polypeptide hormone recognized as th...
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The ability to grow extra nodes is a potentially useful facility for a self-organising neural network. A network that can add nodes into its map space can approximate the input space more accurately, and often more parsimoniously, than a network with predefined structure and size, such as the Self-Organising Map. In addition, a growing network can deal with dynamic input distributions. Most of ...
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Lignocellulosic biomass is a promising feedstock to produce biofuels and other valuable biocommodities. A major obstacle to its commercialization is the high cost of degrading biomass into fermentable sugars, which is typically achieved using cellulolytic enzymes from Trichoderma reesei. Here, we explore the use of microbes to break down biomass. Bacillus subtilis was engineered to display a mu...
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There is a vast supply of prior art that study models for mental processes. Some studies in psychology and philosophy approach it from an inner perspective in terms of experiences and percepts. Others such as neurobiology or connectionist-machines approach it externally by viewing the mind as complex circuit of neurons where each neuron is a primitive binary circuit. In this paper, we also mode...
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Cellulose nitrate films (commercially available as LR 115 films were irradiated systematically with alpha particles in the energy range from 1 to 5 MeV with incident angles from 30◦ to 90◦. After etching to remove a thickness of 6.5 m, the lengths of the major and minor axes of the alpha-particle track openings in the films were measured with an image analyser under an optical magnification of ...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1953
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed030p482.3