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1.
2.
Hitomi Kawakami Takahisa Sakurai Yoshiyasu Ehara Toshiaki Yamamoto Akinori Zukeran 《Journal of Electrostatics》2013,71(6):1117-1123
The novel electrohydrodynamically-assisted electrostatic precipitator (EHD ESP) was developed to suppress particle reentrainment for collection of low resistive diesel particulates. The collection efficiency was compared between vertically and horizontally oriented electrodes of the EHD ESP using 400 cc diesel engine. The particle size dependent collection efficiency was evaluated for the particle size ranging in 20 to 5000 nm using a scanning mobility particle sizer (SMPS) and a particle counter (PC). Both horizontally and vertically oriented EHD ESP showed an excellent suppression of particle reentrainment. However, the horizontally oriented electrode EHD ESP showed significantly improved for the particle size of 300–500 nm in comparison with vertically oriented electrode EHD ESP, resulting in more than 90% collection efficiency for all particle size range. The EHD ESP has high potential especially for highly concentrated marine diesel engine emission control. 相似文献
3.
Masayuki Yamasaki 《Inventiones Mathematicae》1987,88(3):571-602
4.
Zegers RG Abend H Akimune H van den Berg AM Fujimura H Fujita H Fujita Y Fujiwara M Galès S Hara K Harakeh MN Ishikawa T Kawabata T Kawase K Mibe T Nakanishi K Nakayama S Toyokawa H Uchida M Yamagata T Yamasaki K Yosoi M 《Physical review letters》2003,90(20):202501
The excitation and subsequent proton decay of the isovector spin-flip giant monopole resonance (IVSGMR) is studied via the 208Pb(3He,t) reaction at 410 MeV. In the inclusive spectrum (60+/-5)% of the non-energy-weighted sum-rule strength for this 2 variant Planck's over 2h omega resonance was found in the region 29相似文献
5.
We study the output from the modes described by the superposition of Gaussian beams confined in the quasi-stadium microcavities. We experimentally observe the deviation from Snell's law in the output when the incident angle of the Gaussian beam at the cavity interface is near the critical angle for total internal reflection, providing direct experimental evidence on the Fresnel filtering. The theory of the Fresnel filtering for a planar interface qualitatively reproduces experimental data, and a discussion is given on small deviation between the measured data and the theory. 相似文献
6.
D. Okai R. Nagai G. Motoyama T. Fukami T. Yamasaki Y. Yokoyama H.M. Kimura A. Inoue 《Physica C: Superconductivity and its Applications》2010,470(20):1048-1051
The superconducting property of Zr(1−x)Cox (x = 10–50 at.%) alloys and a Zr55Co30Al15 bulk metallic glass fabricated using techniques of rapid solidification was investigated. The Zr55Co30Al15 alloy crystallized by heat treatment in a vacuum atmosphere exhibited superconductivity of Tc,on = 2.4 K. This was attributable to the superconducting property of a crystalline Zr–Co alloy precipitated in the Zr55Co30Al15 alloy. The Tc,on of the crystalline Zr(1−x)Cox alloy was sensitive to the Co content. The increase of Co content for the Zr(1−x)Cox alloy led to the decrease of Tc,on. The Zr(1−x)Cox alloy exhibited superconductivity of a maximum Tc,on = 3.9 K for the Zr80Co20 alloy with superconducting nanocrystal particles embedded in the amorphous matrix. 相似文献
7.
The formation of a deeply-bound K?? –? pp state by the 3He(in-flight K? –, n) reaction is investigated theoretically in a distorted-wave impulse approximation using the Green’s function method. The expected inclusive and semi-exclusive spectra at $p_{K^-} = 1.0$ GeV/c and $\theta_n = 0^{\circ}$ are calculated for the forthcoming J-PARC E15 experiment. We discuss these spectra with some K? –-“pp” optical potentials, taking into account the energy-dependence of the imaginary part of the potentials by a phase space suppression factor. 相似文献
8.
We have observed lasing in a complicated eigenmode of a quasi-stadium laser diode with an unstable resonator consisting of two curved end mirrors obeying an unstable resonator condition and two straight sidewall mirrors. The laser was fabricated by application of a reactive-ion-etching technique to a molecular beam epitaxy-grown graded-index separate-confinement heterostructure single-quantum-well GaAs/AlGaAs structure. The far-field pattern shows that the lasing mode corresponds to the complicated lowest-loss mode obtained numerically by an extended Fox-Li method. 相似文献
9.
S. V. Buldyrev F. Pammolli M. Riccaboni K. Yamasaki D.-F. Fu K. Matia H. E. Stanley 《The European Physical Journal B - Condensed Matter and Complex Systems》2007,57(2):131-138
We present a preferential attachment growth model to obtain the
distribution P(K) of number of units K in the classes which may
represent business firms or other socio-economic entities. We found
that P(K) is described in its central part by a power law with an
exponent ϕ = 2+b/(1-b) which depends on the probability of entry of new
classes, b. In a particular problem of city
population this distribution is equivalent to the well known Zipf
law. In the absence of the new classes entry, the
distribution P(K) is exponential.
Using analytical form of P(K) and assuming proportional growth
for units, we derive P(g), the distribution of business firm
growth rates. The model predicts that P(g) has a Laplacian cusp
in the central part and asymptotic power-law tails with an exponent
ζ = 3. We test the analytical expressions derived using
heuristic arguments by simulations. The model might also explain the
size-variance relationship of the firm growth rates. 相似文献
10.
We obtained high-quality lowest-loss-mode lasing in quasi-stadium laser diodes having unstable resonators that consisted of two curved end mirrors and two straight sidewall mirrors. The laser diodes were fabricated by applying a reactive ion etching technique to a metal-organic chemical-vapor deposition-grown graded-index separate-confinement heterostructure single-quantum-well GaAs/AlGaAs structure. The electrode contact area of the laser diodes was formed along unstable periodic orbits, along which the optical beams are localized. Highly directional fan-out beams corresponding to the numerically obtained lowest loss mode were emitted from the end mirrors under CW operation at room temperature. 相似文献