U

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AcronymDefinition
UUniversity
UYou
UUpper
UUnderlined
UUnsatisfactory
UUnd (German: And)
UUnited
UUltra
UUniversal
UUpper Class
UWind Speed
UUpdate(d) (action code)
UUsed
UUtility
UUncle
UUnlimited Time (broadcasting operating schedules)
UUrgent
UUmbrella
UUnit
USunday (one letter abbreviation for day of week)
UUnified
UUtah (ammunition headstamp)
UUtility (US military aircraft designation; as in U-6 Beaver)
UKosher (from Union of Orthodox Hebrew Congregations)
UUranium
UUniform (aviation letter code)
UUnclassified
UUnitary (mathematics)
UUmpire
UAtomic Unit (measure of mass)
UUracil
UUncleared
UUnsymmetrical
UUmdrehungen (German: RPM)
UUnterseeboot (German: submarine)
UUnion Metallic Cartridge Co (division of Remington Arms; used on head stamp of .22 cartridges)
UEnvelope or Letter Sheet (Scott Catalogue prefix; philately)
UUnit of measurement for rackmount equipment (U is 1.75in or 4.44cm)
UUnknown Wind Intensity (weather reports)
UUS DoT tire speed rating (124 mph)
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References in periodicals archive ?
In ordinary crystals, no overlap occurs, and the atomic unit cells pack into a repeating pattern, which gives the structure minimum energy.
A common and useful parameter for the explanation of the compositional dependence on the physical properties is the coordination number Z of covalent bonds per atom, characterizing the structural atomic units [5,13,14].
We can consider such a scenario by choosing as the initial state a tightly localized state given by [psi](x, 0) = [square root of (2)] sin [k.sub.0]x, with [k.sub.0] = [pi] and the barrier parameters a = 1, b = 2, and [V.sub.0] = 11, in Rydberg atomic units. In this situation the initial wave function is perfectly confined to the left of the barrier (0 < x < 1), and above-the-barrier components contribute in a significant way to build the wave packet, as can be seen from [rho](k) in the top plot of Figure 8 (in this case the probability of finding a nontunneling k component in the wave packet is approximately 75%).