搜索结果: 61-75 共查到“理学 An investigation”相关记录379条 . 查询时间(0.237 秒)
The Gamma-Ray Blazar PKS 0208-512, a Multi-Wavelength Investigation
Gamma-Ray Blazar PKS 0208-512 Multi-Wavelength Investigation
2012/2/23
The gamma-ray blazar PKS 0208-512 has shown strong periods of flaring, at all frequencies from radio to gamma-ray. This has led to its inclusion in the TANAMI project, which tracks the jets of souther...
An Initial Investigation on the Distribution, Living Conditions and Traits of the Hazel in Great Xing’an Ridge Region
Corylus Heterophylla Corylus Mandshurica Distribution Quality Condition
2013/3/8
To take full advantage of the natural hazel resources and improve its yield and quality in Great Xing’an Ridge region, we carried out an initial investigation. The result showed that: there are two sp...
Investigation on the Behavior of Pesticides in Atmosphere
Pesticides XAD-2 adsorbent GC analysis Atmosphere Air quality
2016/3/28
Although pesticides are widely used in agriculture, they and in particular the relative residues in foodstuffs, water and
atmosphere, may cause remarkable sanitary problems due to the harmful effects...
Deep Investigation of Ultrafine Particles in Urban Air
Ultrafine particles Energy Filtered Transmission Electron Microscope analysis Health effects Urban air Carbonaceous aeroso
2016/3/28
This work describes the results of a study which started in 2007 to investigate the ultrafine particle (UFP) pollution in
the urban area of Rome. The sampling site was located in a street with high d...
Geological, Mineralogical and Petrographical Investigation of Yukarikaracay(Honaz) Dolomitic Clays in Denizli Region
Geological Mineralogical Petrographical Investigation Dolomitic Clays
2011/11/10
The study area covers Yukar齥ara鏰y (Honaz) district and its surrounding area, in Denizli region. The rock sequence commences at the base with the Upper Cretaceous-Paleocene autochthonous plysch overlai...
Morphological, Physico-Chemical and Clay Mineralogy Investigation on Gypsiferous Soils in Southern of Tehran, Iran
Morphology Clay mineralogy Smectite Palygorskite Gypsum Arid soils
2011/11/7
In this study, based on topographic maps, satellite images and conducted several field visits, ten pedons studied in the area and for further study four representative pedons selected which occurring ...
Health Evaluation Investigation for Rural Area Space Pattern in the Water-Net Area
Health Evaluation Protection Rural Area Space Pattern Water-Net Area
2011/12/16
This article analyses the impact of urbanization, industrialization, modernization of agriculture on the rural area space pattern in the water-net area of Yangtze River delta; points out the importanc...
Investigation on the scintillation reduction of elliptical vortex beams propagating in atmospheric turbulence
Atmospheric optics Free-space optical communication
2013/7/3
We numerically investigate the scintillation index of an elliptical vortex beam in both modest turbulence and strong turbulence. Numerical simulations are realized with random phase screen sc...
Theoretical Investigation on Triplet Excitation Energy Transfer in Fluorene Dimer
Triplet excitation energy transfer Constrained density functional theory Mar-cus formula Wavepacket diffusion method
2012/4/5
Triplet-triplet energy transfer in fluorene dimer is investigated by combining rate theories with electronic structure calculations. The two key parameters for the control of energy transfer, electron...
Experimental investigation on the scintillation index of vortex beams propagating in simulated atmospheric turbulence
Experimental investigation scintillation index vortex beams propagating simulated atmospheric turbulence
2013/7/3
The scintillation index of vortex beam in simu-lated atmospheric turbulence is experimentally investigated.The fluctuation of the intensity can be effectively reduced by vortex beams. In particular, t...
Investigation and Analysis on Seismic Damages of Mountain Tunnels Subjected to Wenchuan Earthquake
Corresponding Measures Mountain Tunnels Seismic Hazards Wenchuan Earthquake
2011/12/16
Wenchuan earthquake of May 12 struck China with amazement in 2008, which inflicted the devastating destruction to the public transport infrastructures in Sichuan province. Generally speaking, undergro...
Comparative Investigation of Mo(CO)6 Adsorption on Clean and Oxidized Si(111) Surfaces
Molybdenum hexacarbonyl SiO2/Si(111) Interaction High-resolution elec-tron energy loss spectroscopy
2012/4/5
Mo(CO)6 adsorption on the clean, oxygen-precovered and deeply oxidized Si(111) surfaces was comparatively investigated by high-resolution electron energy loss spectroscopy. The downward vibrational fr...
Investigation of the errors in SDSS proper-motion measurements using samples of quasars
Investigation of the errors in SDSS proper-motion measurements using samples of quasars
2011/10/17
We investigate in detail the probability distribution function (pdf) of the proper-motion measurement errors in the SDSS+USNO-B proper-motion catalog of \citet{mun04} using clean quasar samples. The p...
Statistical Investigation of Increments of Currency Rates Logarithms
Currency Rates Logarithms Statistical Investigation Statistics Theory
2011/9/15
Abstract: We consider the currency rates dynamics for 12 currencies, including dollar and euro, with respect to Russian rouble. We prove that the Samuelson model (geometric Brownian motion) is not sui...
Human olfactory receptor 17-40 as active part of a nanobiosensor: A microscopic investigation of its electrical properties
Human olfactory receptor microscopic investigation electrical properties
2011/8/17
Abstract: Increasing attention has been recently devoted to protein-based nanobiosensors. The main reason is the huge number of possible technological applications, going from drug detection to cancer...