نتایج جستجو برای: rotational energy
تعداد نتایج: 692275 فیلتر نتایج به سال:
Band mixing calculations in rapidly rotating well-deformed nuclei are presented, investigating the properties of energy levels and rotational transitions as a function of excitation energy. Substantial fragmentation of E2 transitions is found for Ex > ∼ 800 keV above yrast, which represents the onset of rotational damping. Above Ex ≈ 2 MeV, energy levels and E2 strengths display fluctuations ty...
This paper presents a rotary power scavenging unit comprised of two systems of flexible beams connected by two masses which are joined by means of a spring, considering a PZT (QP16N, Midé Corporation) piezoelectric sheet mounted on one of the beams. The energy harvesting (EH) system is mounted rigidly on a rotating hub. The gravitational force on the masses causes sustained oscillatory motion i...
We have analyzed the influence of the rotational excitation on the H + D2(v = 0, j) reaction through quantum mechanical (QM) and quasiclassical trajectories (QCT) calculations at a wide range of total energies. The agreement between both types of calculations is excellent. We have found that the rotational excitation largely increases the reactivity at large values of the total energy. Such an ...
An algorithm is proposed, based principally on an earlier proposition of Flaud and coworkers [Mol. Phys. 32 (1976) 499], that inverts the information contained in uniquely assigned experimental rotational-vibrational transitions in order to obtain measured active rotational-vibrational energy levels (MARVEL). The procedure starts with collecting, critically evaluating, selecting, and compiling ...
The collison of N2 molecules in which only rotation of molecules is regarded as internal degree of freedom is simulated and the energy transfer between translational and rotational energy is investigated numerically at low temperature. The results are visualized and it is shown that energy transfer changes by the direction and orientation of rotational vector and the impact parameter and it is ...
Global horizontal wavenumber kinetic energy spectra and spectral fluxes of rotational kinetic energy and enstrophy are computed for a range of vertical levels using a T799 ECMWF operational analysis. Above 250 hPa, the kinetic energy spectra exhibit a distinct break between steep and shallow spectral ranges, reminiscent of dual power-law spectra seen in aircraft data and high-resolution general...
High-spin states in 58Ni have been investigated by means of the fusion-evaporation reaction 28Si(32S, 2p)58Ni at 130 MeV beam energy. Discrete-energy levels are observed in 58Ni at record-breaking 42 MeV excitation energy and angular momenta in excess of 30h. The states form regular rotational bands with unprecedented high rotational frequencies. A comparison with configuration dependent cranke...
Rotational energy has been a key element in many domestic and industrial areas from wristwatches to offshore wind turbines. It utilized on large scale megawatt-scale hydraulic power generators kilowatt-scale vehicles rotating machines, watt-scale hand-held tools, milliwatt (microwatt) rotational harvesters. The scope of this review is microwatt-level harvesters (millimeter centimeter size) that...
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