منابع مشابه
افزونگی قاب های موضعی (redundancy for localized frames)
نشان میدهیم افزونگی یک ویژگی کیفی است که قاب های فضای هیلبرت را در کاربرد مفید می سازد. با این حال بدست آوردن یک تعریف کمی معنی دار از افزونگی برای قاب های نامتناهی پیچیده است ولی از آن جایکه جایگزین هایی برای افزونگی موجود است مهمترین مساله باز این است که ایا یک قاب با افزونگی بزرگتر از یک دارای یک زیر قاب با افزونگی دلخواه نزدیک به 1 هست یا نه ؟ ما به این سوال برای قاب های موضعی شده جواب مثب...
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Since Mendel’s time, most genes have been identified by the effects mutations (including knockouts) have on the morphology, physiology, or behavior of individuals. Thus, almost by definition, there could be no ‘‘mutant genes without phenotypes.’’ In the molecular era, however, it has become possible to identify genes from DNA sequences. This alternative path to gene discovery has already led to...
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Necrotrophic diseases of wheat cause major losses in most wheat growing areas of world. Tan spot (caused by Pyrenophora tritici-repentis) and septoria nodorum blotch (SNB; Parastagonospora nodorum) have been shown to reduce yields by 10-20% across entire agri-ecological zones despite the application of fungicides and a heavy focus over the last 30 years on resistance breeding. Efforts by breede...
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Only about a third of the 100 amino acids in cytochrome c are necessary to specify its function. Most of the amino acids in cytochrome c are hypervariable (i.e. they can be replaced by a large number of functionally equivalent amino acids) (Dickerson and Timkovich 1975). Most importantly, Hubert Yockey has done a careful study in which he calculated that there are a minimum of 2.3 x 10 possible...
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Identification of long tracts responsible for the initiation of spontaneous locomotion is critical for spinal cord injury (SCI) repair strategies. Pathways derived from the mesencephalic locomotor region and pontomedullary medial reticular formation responsible for fictive locomotion in decerebrate preparations project to the thoracolumbar levels of the spinal cord via reticulospinal axons in t...
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ژورنال
عنوان ژورنال: Methods in Ecology and Evolution
سال: 2021
ISSN: 2041-210X,2041-210X
DOI: 10.1111/2041-210x.13587