搜索结果: 16-30 共查到“理学 Size distribution”相关记录45条 . 查询时间(0.582 秒)
Recurrent frequency-size distribution of characteristic events
Recurrent frequency-size distribution characteristic events
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2009/10/30
Statistical frequency-size (frequency-magnitude) properties of earthquake occurrence play an important role in seismic hazard assessments. The behavior of earthquakes is represented by two different s...
Size distribution of sulfur species in fine and ultrafine aerosol particles using sulfur K-edge XANES
sulfur species aerosol size distribution XANES
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2009/10/10
The sulfur species existing in different size aerosol particles were determined based on the `white line' energy shift and the features of post edge structure of sulfur K-edge XANES (X-ray Absorpti...
Study of columnar aerosol size distribution in Hong Kong
columnar aerosol size distribution Hong Kong
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2009/9/2
This paper presents studies on columnar aerosol optical properties in Hong Kong with focus on aerosol volume size distribution, which helps understand local aerosol properties, variation, hygroscopic ...
Long term particle size distribution measurements at Mount Waliguan, a high-altitude site in inland China
Mount Waliguan high-altitude site inland China
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2009/8/7
Particle number size distributions in size range 12–570 nm were measured continuously at Mount Waliguan, a remote mountain-top station in inland China. The station is located at the altitude of 3816 m...
The time evolution of aerosol size distribution over the Mexico City plateau
aerosol size distribution Mexico City plateau
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2009/7/15
As part of the MILAGRO field campaign, the DOE G-1 aircraft was used to make measurements over and downwind of Mexico City with the objective of determining growth characteristics of aerosols from a m...
Spatio-temporal variability and principal components of the particle number size distribution in an urban atmosphere
Spatio-temporal variability particle number size distribution urban atmosphere
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2009/5/15
A correct description of fine (diameter <1 μm) and ultrafine (<0.1 μm) aerosol particles in urban areas is of interest for particle exposure assessment but also basic atmospheric research. We examined...
Source Apportionment of Winter Submicron Prague Aerosols from Combined Particle Number Size Distribution and Gaseous Composition Data
Receptor modeling Particle size distribution Positive Matrix Factorization Prague
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2016/3/25
Combined particle number size distributions and readily available gaseous concentration data were
used to identify winter particle sources in the urban atmosphere of Prague, the capital of Czech
Rep...
Classifying previously undefined days from eleven years of aerosol-particle-size distribution data from the SMEAR II station, Hyytiälä, Finland
aerosol-particle-size distribution SMEAR II station Hyytiä lä Finland
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2009/3/12
Studies of secondary aerosol-particle formation depend on identifying days in which new particle formation occurs and, by comparing them to days with no signs of particle formation, identifying the co...
New particle formation during a- and b-pinene oxidation by O3, OH and NO3, and the influence of water vapour: particle size distribution studies
a- and b-pinene oxidation O3 OH NO3 water vapour particle size distribution
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2009/3/12
New particle formation during the oxidation of a- and b-pinene (C10H16) by ozone, OH and NO3 was studied by measuring the particle size distributions with a scanning mobility particle sizer (TSI 3936)...
One year boundary layer aerosol size distribution data from five nordic background stations
boundary layer aerosol nordic background station
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2009/3/11
Size distribution measurements performed at five different stations have been investigated during a one-year period between 01 June 2000 and 31 May 2001 with focus on diurnal, seasonal and geographica...
TECHNICAL NOTE: The representation of rainfall drop-size distribution and kinetic energy
drop-size distribution drop kinetic energy soil erosion
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2009/3/11
To relate observed rainfall rates (R) to the kinetic energy flux (E) that affects soil erosion it is necessary to develop relationships between the two. This paper explores theoretical E–R relationshi...
An investigation of processes controlling the evolution of the boundary layer aerosol size distribution properties at the Swedish background station Aspvreten
processes controlling boundary layer aerosol size distribution properties Swedish background station Aspvreten
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2009/3/10
Aerosol size distributions have been measured at the Swedish background station Aspvreten (58.8° N, 17.4° E). Different states of the aerosol were determined using a novel application of cluster analy...
Particle size distribution and particle mass measurements at urban,near-city and rural level in the Copenhagen area and Southern Sweden
Particle size distribution particle mass measurements Copenhagen area Southern Sweden
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2009/2/20
Particle size distribution (size-range 3-900nm) and PM10 was measured simultaneously at an urban background station in Copenhagen, a near-city background and a rural location during a period in Septem...
Measurements in a highly polluted Asian mega city: observations of aerosol number size distribution, modal parameters and nucleation events
highly polluted Asian mega city aerosol number size distribution modal parameters nucleation events
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2009/1/23
Diurnal variation of number size distribution (particle size 3-800nm) and modal parameters (geometric standard deviation, geometric mean diameter and modal aerosol particle concentration) in a highly ...
Correlation between traffic density and particle size distribution in a street canyon and the dependence on wind direction
traffic density particle size distribution street canyon wind direction
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2009/1/15
Combustion of fossil fuel in gasoline and diesel powered vehicles is a major source of aerosol particles in a city. In a street canyon, the number concentration of particles smaller than 300 nm in di...