منابع مشابه
Abstraction by Time - Scale in Qualitative Simulation * ( Extended
ion by Time-Scale in Qualitative Simulation* (Extended Abstract) Benjamin Kuipers Department of Computer Sciences University of Texas at Austin Austin, Texas 78712 . February 9, 1987 Abstract Qualitative simulation faces an intrinsic problem of scale : the number of limit hypotheses grows exponentially with the number of parameters approaching limits . We present a method called TimeScale Abstr...
متن کاملLocalization of the rat myosin I molecules myr 1 and myr 2 and in vivo targeting of their tail domains.
Myr 1 is a widely distributed mammalian myosin I molecule related to brush border myosin 1. A second widely distributed myosin I molecule similar to myr 1 and brush border myosin I, called myr 2, has now been identified. Specific antibodies and expression of epitope-tagged molecules were used to determine the subcellular localization of myr 1 and myr 2 in NRK cells. Myr 1 was detected at the pl...
متن کاملMyr - Old Transition Disk
We present the mid-infrared spectrum, obtained with the Spitzer Infrared Spectrograph (IRS), of HD 98800, a quadruple star system located in the 10-Myr-old TW Hydrae association. It has a known mid-infrared excess that arises from a circumbinary disk around the B components of the system. The IRS spectrum confirms that the disk around HD 98800 B displays no excess emission below about 5.5 μm, i...
متن کاملExtended Planck Scale
Abstract Traditional derivations of the Planck mass ignore the role of charge and spin in general relativity. From the Kerr-Newman null surface and horizon radii, quantized charge and spin dependence are introduced in an extended Planck scale of mass. Spectra emerge with selection rules dependent upon the choice of Kerr-Newman radius to link with the Compton wavelength. The appearance of the fi...
متن کاملEXTENDED DEFECTS AND POLARITY OF HYDRIDE VAPOR PHASE EPITAXY GaN
Hydride vapor phase epitaxy (HVPE) GaN layers on sapphire substrates and so-called free-standing platelets (layers removed from the sapphire) were studied by different transmission electron microscopy (TEM) techniques. Polarity determined by convergent beam electron diffraction (CBED) and distribution of structural defects, determined by conventional TEM, are discussed. HVPE layers were found t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1977
ISSN: 0028-0836,1476-4687
DOI: 10.1038/266219b0