搜索结果: 136-150 共查到“知识库 理学 activity”相关记录418条 . 查询时间(0.202 秒)
Dependence of Star Formation Activity On Stellar Mass and Environment From the Redshift One LDSS-3 Emission Line Survey (ROLES)
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
Using the sample from the \it Redshift One LDSS3 Emission line Survey \rm (ROLES), we probe the dependence of star formation rate (SFR) and specific star formation rate (sSFR) as a function of stellar...
Identification of strong photometric activity in the components of LHS 1070
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/27
Activity in low-mass stars is an important ingredient in the evolution of such objects. Fundamental physical properties such as age, rotation, magnetic field are correlated with activity.
A closer view of the radio-FIR correlation: disentangling the contributions of star formation and AGN activity
Galaxy Astrophysics (astro-ph.GA)
2010/12/23
We extend the Unified Radio Catalog, a catalog of sources detected by various (NVSS, FIRST, WENSS, GB6) radio surveys, and SDSS, to IR wavelengths by matching it to the IRAS Point and Faint Source cat...
On the classical theory of molecular optical activity
classical theory molecular optical activity
2010/10/21
The basic principles of classical and semi-classical theories of molecular optical activity are
discussed. These theories are valid for dilute solutions of optically active organic molecules. It is s...
The Influence of Solar Activity on the Rainfall over India: Cycle-to-Cycle Variations
Solar activity Indian rainfall galactic cosmic rays volcanic or interstellar dust
2010/9/17
We use 130 years data for studying correlative effects due to solar cycle and activity phenomena on the occurrence of rainfall over India. For the period of different solar cycles, we compute the corr...
The Extreme Solar Activity during October–November 2003
Sunspots rotation flare extreme activity
2010/9/17
The positional measurements of sunspots from the Kodaikanal Observatory and Solar Geophysical data are used to study the association between occurrence of the abnormal activities of big sunspot groups...
Effect of Magnetic Activity on Ionospheric Time Delay at Low Latitude
Ionospheric time delay scintillation TEC geomagnetic storm
2010/9/16
The purpose of this work is to investigate the effect of magnetic activity on ionospheric time delay at low latitude Station Bhopal (geom. lat. 23.2◦N, geom. long. 77.6◦E) using dual frequ...
Multi-parametric Effect of Solar Activity on Cosmic Rays
Sun solar parameters cosmic ray modulation running multiple correlation method
2010/9/16
The long-term modulation of cosmic ray intensity (CRI) by different solar activity (SA) parameters and an inverse correlation between individual SA parameter and CRI is well known. Earlier, it has bee...
Determining the Relative Age of Fault Activity through Analyses of Gouge Mineralogy and Geochemistry: A Case Study from Vápenná (Rychleby Mts), Czech Republic
Crystalline Limestone Intersecting Faults Fault Gouge Relative Chronology
2013/3/6
The relative age of fractures can be determined through structural analyses in the field or through the detailed mineralogical (XRD) and chemical analyses (AAS method, volumetric, and gravimetric anal...
Structure-activity relationships to estimate the effective Henry's law constants of organics of atmospheric interest
Structure-activity relationships the effective Henry's law atmospheric interest
2010/8/25
The Henry's law constant is a key property needed to address the multiphase behaviour of organics in the atmosphere. Methods that can reliably predict the values for the vast number of organic compoun...
The contribution of anthropogenic aerosols to aerosol light-scattering and CCN activity in the California coastal zone
anthropogenic aerosols aerosol light-scattering CCN activity the California coastal zone
2010/8/16
Aircraft-based measurements of aerosol light-scattering coefficient, cloud condensation nuclei (CCN) measured directly or by proxy, and aerosol chemical composition are reported for three different ye...
Effects of lightning and other meteorological factors on fire activity in the North American boreal forest: implications for fire weather forecasting
meteorological factors fire activity the North American boreal forest fire weather forecasting
2010/8/16
The effects of lightning and other meteorological factors on wildfire activity in the North American boreal forest are statistically analyzed during the fire seasons of 2000–2006 through an integratio...
Characterization of particle cloud droplet activity and composition in the free troposphere and the boundary layer during INTEX-B
particle cloud droplet activity the free troposphere the boundary layer INTEX-B
2010/8/16
Measurements of cloud condensation nuclei (CCN), aerosol size distributions, and submicron aerosol composition were made as part of the Intercontinental Chemical Transport Experiment Phase B (INTEX-B)...
Tornado activity in Greece within the 20th century
Tornado activity Greece within the 20th century
2010/9/10
Tornado activity is associated with extreme convective weather which can cause extended damage and even in some cases the loss of life. The complex inland terrain of Greece along with the Ionian Sea a...
Mannich base derivatives of 3-hydroxy-6- methyl-4H-pyran-4-one with antimicrobial activity
Antimycobacterial and antibacterial activity DNA gyrase activity
2010/10/18
A series of 3-hydroxy-6-methyl-2-[(substitutedpiperidine-1-yl) methyl]-4H-pyran-4-one structured compounds were synthesized by reacting 5-hydroxy-2-methyl-4H-pyran-4-one with suitable piperidine deriv...
