全文获取类型
收费全文 | 74篇 |
免费 | 0篇 |
专业分类
测绘学 | 4篇 |
大气科学 | 3篇 |
地球物理 | 9篇 |
地质学 | 17篇 |
海洋学 | 2篇 |
天文学 | 39篇 |
出版年
2020年 | 2篇 |
2018年 | 3篇 |
2017年 | 3篇 |
2016年 | 4篇 |
2015年 | 1篇 |
2014年 | 2篇 |
2013年 | 3篇 |
2012年 | 1篇 |
2011年 | 4篇 |
2010年 | 3篇 |
2009年 | 4篇 |
2008年 | 1篇 |
2005年 | 2篇 |
2004年 | 1篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1972年 | 1篇 |
1970年 | 3篇 |
1969年 | 2篇 |
1900年 | 1篇 |
排序方式: 共有74条查询结果,搜索用时 0 毫秒
1.
K. S. Krishna Swamy 《Astrophysics and Space Science》1970,8(1):86-89
Two hyades giant stars, and Tau, have been studied from an analysis of strong line profiles. We get for Tau,T
e
=4750K and logg=2.7, and for Tau,T
e
=4700K and logg=2.8. Hydrogen-to-metal ratio for the two stars is nearly the same as that of solar value. 相似文献
2.
The exact nonlinear cylindrical solution for incompressible Hall – magnetohydrodynamic (HMHD) waves, including dissipation,
essentially from electron – neutral collisions, is obtained in a uniformly rotating, weakly ionized plasma such as exists
in photospheric flux tubes. The ω – k relation of the waves, called here Hall – MHD waves, demonstrates the dispersive nature of the waves, introduced by the Hall
effect, at large axial and radial wavenumbers. The Hall – MHD waves are in general elliptically polarized. The partially ionized
plasma supports lower frequency modes, lowered by the factor δ≡ratio of the ion mass density to the neutral particle mass density, as compared to the fully ionized plasma (δ=1). The relation between the velocity and the magnetic field fluctuations departs significantly from the equipartition found
in Alfvén waves. These short-wavelength and arbitrarily large amplitude waves could contribute toward the heating of the solar
atmosphere. 相似文献
3.
We have made an analysis of the observed equivalent widths of the lines of Lyman and Werner bands by Smith. The H2 column densities of 3×1019 to 1020 and the excitation temperature of 80 to 150 K satisfy the observations. This temperature refers to the kinetic temperature. We have also discussed the importance of getting the excitation temperature from lines of H2 and other heteronuclear diatomic molecules for the same star and from different regions of space. 相似文献
4.
We present a radiative transfer analysis of circumstellar dust shells around the Post-AGB stars HD 179821, HD 56126, HD 101584
and early R star HD 100764, using the code DUSTY. Parameters like mass-loss, shell inner radius, dust temperature, outflow
velocity etc., are derived for HD 179821and HD 56126 whose observed SED could be reproduced by our models.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
5.
Varghese Stella Jes Surendran Sajani Rajendran Kavirajan Kitoh Akio 《Climate Dynamics》2020,54(3):1315-1328
Climate Dynamics - Present-day simulations (1983–2003) of a global climate model of 60-km resolution with three deep convection schemes are analysed to find the best scheme for simulation of... 相似文献
6.
Magnetic anomalies of offshore Krishna-Godavari basin,eastern continental margin of India 总被引:1,自引:0,他引:1
K. V. Swamy I. V. Radhakrishna Murthy K. S. Krishna K. S. R. Murthy A. S. Subrahmanyam M. M. Malleswara Rao 《Journal of Earth System Science》2009,118(4):405-412
The marine magnetic data acquired from offshore Krishna-Godavari (K-G) basin, eastern continental margin of India (ECMI),
brought out a prominent NE-SW trending feature, which could be explained by a buried structural high formed by volcanic activity.
The magnetic anomaly feature is also associated with a distinct negative gravity anomaly similar to the one associated with
85°E Ridge. The gravity low could be attributed to a flexure at the Moho boundary, which could in turn be filled with the
volcanic material. Inversion of the magnetic and gravity anomalies was also carried out to establish the similarity of anomalies
of the two geological features (structural high on the margin and the 85°E Ridge) and their interpretations. In both cases,
the magnetic anomalies were caused dominantly by the magnetization contrast between the volcanic material and the surrounding
oceanic crust, whereas the low gravity anomalies are by the flexures of the order of 3–4 km at Moho boundary beneath them.
The analysis suggests that both structural high present in offshore Krishna-Godavari basin and the 85°E Ridge have been emplaced
on relatively older oceanic crust by a common volcanic process, but at discrete times, and that several of the gravity lows
in the Bay of Bengal can be attributed to flexures on the Moho, each created due to the load of volcanic material. 相似文献
7.
Effect of Soil Parameters on Dynamic Cone Penetration Indices of Laterite Sub-grade Soils from India
Varghese George Ch. Nageshwar Rao R. Shivashankar 《Geotechnical and Geological Engineering》2009,27(4):585-593
The focus of this study was on correlating the effect of grain-size, maximum dry-density (MDD), field moisture content, and
the void ratios on penetration measured using the dynamic cone penetrometer (DCP) for laterite soils blended with fines. Tests
were performed on soil samples compacted to MDD for moulding water contents set to the optimum moisture content (OMC), dry
of OMC, and wet of OMC un-soaked condition. The results indicated that an increase in the fines-content caused a decrease
in the MDD, and an increase in the OMC and the DCP penetration. Regressions were developed correlating various parameters. 相似文献
8.
T.G. Varghese F. Roy B.S.S. Rao M.P. Suryavanshi R.N. Bharthur 《Physics of the Earth and Planetary Interiors》1979,18(2):87-94
The medium-aperture array at Gauribidanur is in continous operation since 1966. With the recent addition of a 12-bit 16-K computer its potential for the monitoring of underground explosions has improved considerably. The salient aspects of the monitoring system, the present and projected procedures for generation and dissemination of detection data and the long-term storage of data relevant to discrimination research are discussed. An attempt is also made to assess its detection efficiency in the light of the major features of site noise. 相似文献
9.
10.