نتایج جستجو برای: dispersion height

تعداد نتایج: 161957  

2008
G. Wang M. Kuffer

The prime aim of this research is to support decision making, e.g., air quality impact analysis, human health assessment, through spatially modelling traffic-induced air pollution dispersion in urban areas at street level. Based on the information needed in decision making, a framework for a street level air quality decision support system is established, which is composed of basically three pa...

2010
F. K. Petersson D. Martin I. R. White S. J. Henshaw D. E. Shallcross

In June 2006, two perfluorocarbon tracer experiments were conducted in central Manchester UK as part of the CityFlux campaign. The main aim was to investigate vertical dispersion in an urban area during convective conditions, but dispersion mechanisms within the street network were also studied. Paired receptors were used in most cases where one receptor was located at ground level and one at r...

2016
Christopher Gutiérrez Lola Brown Cheol-Joo Kim Jiwoong Park Abhay N. Pasupathy

1. Spiral pattern Cu(111) reconstruction 2. STM bias-dependent height of graphene quantum dots 3. Determination of Dirac point from dI/dV and field emission resonance spectroscopies 4. Massless Dirac fermion incident on a circular step 5. Massless spinless boson incident on a circular step 6. Assignment of angular momentum modes to experimental data 7. Sublattice symmetry and asymmetry 8. Linea...

2014
Marc Gronle Wolfram Lyda Florian Mauch Wolfgang Osten

Abstract In this paper, a new single-shot line sensor based on Fourier-domain spectral interferometry is presented. Each point of the sampled line is encoded by a different wavelength obtained by a chromatic dispersion at a grating. The requested height profile of the line is determined by combining a phase detection algorithm with an appropriate model-based approach. The robustness of this alg...

Journal: :Physical review. B, Condensed matter 1991
Pryor

The subband structure and band-to-band optical matrix elements are computed for serpentine superlattice quantum-wire arrays. The subband dispersion and bandwidths are examined as a function of the curvature of the confining barriers and of the barrier height separating the wires. The optical matrix elements show a strong polarization dependence, even when the coupling between wires in the array...

2004
J. L. Han

Pulsar motions in our Galaxy from their birth until 2 Gyr are studied statistically via Monte-Carlo simulation of 2 × 10 pulsars with the best available representation of the Galactic potential. We find that the distribution of height above the Galactic plane for pulsars with characteristic ages less than about 8 Myr could be well fitted by a Gaussian function. For older pulsars, an extra expon...

1996
R. de Grijs R. F. Peletier

Letter to the Editor The shape of galaxy disks: how the scale height increases with galactocentric distance Abstract. We present the results of a detailed study of vertical surface brightness profiles of edge-on disk galaxies. Although the exponential disk scale height is constant to first order approximation, we show that for the large majority of galaxies in our sample, the scale height incre...

Journal: :Buildings 2022

High concentrations of ozone (O3) is a major air problem in urban areas, which creates serious threat to human health. Urban street canyon morphology plays key role pollutant dispersion and photochemical reaction rate. In this study, one-year observation at three height levels was performed investigate the O3 distribution vertically Shenyang. Then, field investigation ENVI-met modelling were co...

In this article, the optical properties of silver cubic-shape nanostructures (SCNs) were analyzed by employing the discrete dipole approximation (DDA) in aqueous media. The absorption, dispersion and extinction cross-sections of these nanostructures were calculated based on the wavelength change of the incident light in the visible and near infrared region. Moreover, the height change, waveleng...

Journal: Pollution 2015

Today, the cement industry is one of the major air polluting industries in the world. Hence, in this study, owing to the importance and role of contaminants from the plant, an appraisal of the emission contributions in addition to other factors have been discussed. There are several reasons behind the importance of modeling air pollutants. First, the assessment of standards for air pollution, a...

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