Botany ; Plants, Cultivated
Description based on: 2nd quarter (1977); ; Volume numbering erratic or non-existance on some issues
Civil defense ; Civil defense ; Assistance in emergencies
Description: This study is devoted to the design of an experimental device to generate shock waves in a micropipe. Indeed, the recent advances in the microfluidics of gas lead the scientific community to the question of scaling law in supersonic regime. Thus, in this paper, we simulate the flow induced by the opening of a small solenoid valve to know if it is able to generate a minishock wave. This shock wave moving in an intermediate pipe could be transmitted into a mic...
Description: This article introduces a robust and computationally efficient technique for the design of fluctuation-resistant structures (fault-tolerant) semiconductor devices. This technique can be applied to the computation of the doping profiles that minimize the intrinsic variations in various parameters induced by random dopant fluctuations. The technique is based on the evaluation of doping sensitivity functions, which are defined as elements of the space adjoint t...
Cottages ; Architecture, Domestic ; Housing
Description: Ferroelectric Pb (ZrxTi1−x) O3 sandwiched between SrRuO3 electrodes devices were fabricated by a single stencil deposition method. By varying the pressure, the dimension of the deposited pattern could be controlled. The dimension becomes larger in the high pressure shockwave regime, which is typical for pulsed laser deposition. The particle interactions result in an increased amount of broadening. At lower pressures, the deposited material is still in the co...
Description: The dispersion relation for a free-electron laser (FEL) with a one-dimensional helical wiggler and an ion channel, in the collective regime, is found with all relativistic effects on the space-charge wave and radiation included. This dispersion relation is solved numerically to study the unstable interaction among all wave modes. In group I orbits, coupling between the positive-energy space-charge wave and the left circularly polarized electromagnetic wave i...
Chemistry, Analytic -- Quantitative
Supersedes its Memoirs and proceedings ; Title varies: v. 1-14, (Quarterly journal. 1878-1925 issued in two sections: Transactions, and Abstracts; 1926- the Abstracts are superseded by British chemical abstracts. [Series] A. Pure chemistry
Civil engineering
Description: We study the shapes of perfect projectiles: Bodies of prescribed volume that are designed to suffer minimum fluid drag in steady flight. Perfect projectiles have a surprising property: Although the flow of fluid around the body of the projectile is fore-aft asymmetric at moderate flow speeds, the shape of the body that minimizes drag is nonetheless highly symmetrical. We show that perfect projectiles are weakly asymmetric and that their asymmetry grows with ...
Description: Piezoelectric AlN films, 1.3–6.2 μm thick, have been grown on bare and metallized Al2O3(0001) substrates by reactive radio-frequency-sputtering technique at 180 °C. The films were uniform, stress-free, highly c-axis oriented normal to the surface, and extremely adhesive to the substrates. Surface acoustic wave (SAW) delay lines, showing harmonic modes with operating frequencies up to about 2.44 GHz, were obtained just using conventional optical lithography a...