Items where Author is "Sethi, N. K."

Sethi, N. K. ; Pandey, V. K. ; Mahajan, K. K. (2004) Seasonal and solar activity changes of electron temperature in the F-region and topside ionosphere Advances in Space Research, 33 (6). pp. 970-974. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (2004) Topside electron temperature models for low and high solar activity Advances in Space Research, 33 (6). pp. 959-962. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (2003) Dependence of F2- peak height on solar activity: A study with incoherent scatter measurements Advances in Space Research, 31 (3). pp. 543-548. ISSN 0273-1177

Sethi, N. K. ; Goel, M. K. ; Mahajan, K. K. (2002) Solar Cycle variations of ƒoF2 from IGY to 1990 Annales Geophysicae, 20 . pp. 1677-1685. ISSN 0992-7689

Sethi, N. K. ; Mahajan, K. K. (2002) The bottomside parameters B0, B1 obtained from incoherent scatter measurements during a solar maximum and their comparisons with the IRI-2001 model Annales de Geophysique, 20 (6). pp. 817-822. ISSN 0003-4029

Sethi, N. K. ; Pandey, V. K. ; Mahajan, K. K. (2001) Comparative study of TEC with IRI model for solar minimum period at low latitude Advances in Space Research, 27 (1). pp. 45-48. ISSN 0273-1177

Mahajan, K. K. ; Sethi, N. K. (2001) Empirical models of parameters B0, B1 from Arecibo radar measurements Advances in Space Research, 27 (1). pp. 17-20. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (2001) Equivalent slab thickness and its variability: a study with incoherent scatter measurements Advances in Space Research, 27 (1). pp. 60-64. ISSN 0273-1177

Sethi, N. K. ; Mahajan, K. K. ; Pandey, V. K. (2000) Bottomside parameters B0,B1 from Arecibo incoherent scatter radar measurements Advances in Space Research, 25 (1). pp. 97-100. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (2000) Comparing IRI E-region peak height (hmE) with incoherent scatter data Advances in Space Research, 25 (1). pp. 65-68. ISSN 0273-1177

Mahajan, K. K. ; Upadhyay, H. O. ; Hoegy, W. R. ; Pesnell, W. D. ; Brace, L. H. ; Sethi, N. K. (1998) Pioneer Venus orbiter measurements fo solar EUV flux during solar cycle 21 and 22 Solar Physics, 177 (1-2). pp. 203-216. ISSN 0038-0938

Mahajan, K. K. ; Aggrawal, S. ; Sethi, N. K. ; Kohli, R. (1997) On the saturation of foF2 for R12 above 150 Advances in Space Research, 20 (9). pp. 1761-1764. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (1997) Topside electron density distribution during sunrise and sunset conditions at Arecibo: Comparison with IRI Advances in Space Research, 20 (9). pp. 1765-1768. ISSN 0273-1177

Mahajan, K. K. ; Hoegy, W. R. ; Pesnell, W. D. ; Brace, L. H. ; Sethi, N. K. (1997) A comparison of solar EUV flux from Langmuir probe photoelectron measurements on the Pioneer Venus Orbiter with other solar activity indicators Advances in Space Research, 20 (2). pp. 187-190. ISSN 0273-1177

Mahajan, K. K. ; Sethi, N. K. ; Pandey, V. K. (1997) The diurnal variation of E-F valley parameters from incoherent scatter measurements at Arecibo Advances in Space Research, 20 (9). pp. 1781-1784. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (1996) Comparison of IRI topside electron density profile with Arecibo incoherent scatter measurements Advances in Space Research, 18 (6). pp. 289-292. ISSN 0273-1177

Gulyaeva, T. L. ; Mahajan, K. K. ; Sethi, N. K. (1996) Modification of IRI half-density height option for low latitudes Advances in Space Research, 18 (6). pp. 149-152. ISSN 0273-1177

Mahajan, K. K. ; Kohli, R. ; Sethi, N. K. ; Pandey, V. K. (1995) Variability of the F-region parameter h0.5 Advances in Space Research, 15 (2). pp. 51-60. ISSN 0273-1177

Mahajan, K. K. ; Pandey, V. K. ; Goel, M. K. ; Sethi, N. K. ; Kohli, R. (1994) Incoherent-scatter measurements of E-F valley and comparisons with theoretical and empirical models Advances in Space Research, 14 (12). pp. 75-78. ISSN 0273-1177

Kumar, K. ; Singh, S. ; Mahajan, K. K. ; Sethi, N. K. (1994) A study of tropopause and stable layers in the lower atmosphere from the Indian MST radar Indian Journal of Radio and Space Physics, 23 . pp. 71-74. ISSN 0367-8393

Mahajan, K. K. ; Ghosh, S. ; Sethi, N. K. ; Kohli, R. (1992) Ionospheric evidence of hot oxygen in the upper atmosphere of Venus Geophysical Research Letters, 19 (16). pp. 1627-1629. ISSN 0094-8276

Mahajan, K. K. ; Kohli, R. ; Pandey, V. K. ; Sethi, N. K. (1990) Information about the E-region valley from incoherent scatter measurements Advances in Space Research, 10 (8). pp. 17-20. ISSN 0273-1177

Sethi, N. K. ; Rao, S. S. ; Aggarwal, O. P. ; Indrayan, A. ; Chuttani, C. S. (1989) Childbirth spacing in a rural community of Delhi: profile in various marriage cohorts by decades Indian Pediatrics, 26 (9). pp. 894-899. ISSN 0019-6061

Rao, Sarah S. ; Indrayan, A. ; Aggarwal, O. P. ; Sethi, N. K. ; Chuttani, C. K. (1987) Completed family size of rural women: changing patterns in four decades of marriage cohorts Indian Journal of Community Medicine, 12 (1). pp. 41-50. ISSN 0970-0218