39,239 research outputs found
Scientometric portrait of Ram Gopal Rastogi
No full textPublication productivity of Indian scientist (R.G. Rastogi) has been documented.
Scientometric analysis of 312 papers by Ram Gopal Rastogi published during 1954 to 1992 in various domains: (a) Luni -solar activity and quiet -time E & F- region (57); (b) Equatorial electric field and low and mid latitude iof:osphere (78); (c) Ionospheric E- region irregularities (19); (dj Ionospheric F- region irregularities (32); and (e) Magnetic disturbance effects on the equatorial low and mid latitude ionosphere (23) were analysed. Interdomainery contents and of the number of papers: a+b were 36; b+c and b+d were 20 each; b+e were 16;. c+e were 5; a+e were 3; d+e were 2; and a+d had only one publication. Highest collaborations were with H. Chandra (61), M.R. Deshpande (42), and G. Sethia (19) out of his total 97 collaborators. His highest productivity was during 1978 with 28 papers followed by 19 papers during 1977. The core journals preferred by him for publishing papers were: Indian Journal of Radio & Space Physics, India, and Journal of Atomic & Terrestrial Physics, UK (59 each), followed by Proceedings of the Indian Academy of Sciences, India (34). Most prolific title keywords with their frequencies were: Ionosphere (92); Equatorial (61); F-region (53); Equatorial electrojet region (40), and Magnetic equator (30)
Sistemi peptidergici (FMRFammide, neuropeptide Y, Myostatin), nervo terminale e sistema di fibre olfattive extrabulbari in due popolazioni (mediterranea e nordatlantica) di spigola: analisi ontogenetica e comparativa.
No full textPresence and seasonal distribution of putative sex steroid binding molecules in the testis of the lizard, Podarcis s. sicula
No full textEXTRABULBAR OLFACTORY SYSTEM AND NERVUS TERMINALIS FMRFAMIDE IMMUNOREACTIVE COMPONENTS IN XENOPUS LAEVIS ONTOGENESIS.
No full textThe extrabulbar olfactory system (EBOS) is a collection of nerve fibers which originate from primary olfactory receptor-like neurons
and penetrate into the brain bypassing the olfactory bulbs. Our description is based upon the application of two neuronal tracers (biocytin,
carbocyanine DiI) in the olfactory sac, at the cut end of the olfactory nerve and in the telencephalon of the developing clawed frog. The
extrabulbar olfactory system was observed already at stage 45, which is the first developmental stage compatible with our techniques; at
this stage, the extrabulbar olfactory system fibers terminated diffusely in the preoptic area. A little later in development, i.e. at stage 50, the
extrabulbar olfactory system was maximally developed, extending as far caudally as the rhombencephalon. In the metamorphosing specimens,
the extrabulbar olfactory system appeared reduced in extension; caudally, the fiber terminals did not extend beyond the diencephalon. While a
substantial overlapping of biocytin/FMRFamide immunoreactivity was observed along the olfactory pathways as well as in the telencephalon,
FMRFamide immunoreactivity was never observed to be colocalized in the same cellular or fiber components visualized by tracer molecules.
The question whether the extrabulbar olfactory system and the nervus terminalis (NT) are separate anatomical entities or represent an integrated
system is discussed
NMDA can modulate mGnRH secretion from rat hypothalamus
No full textIn our in vitro system, the rat hypothalamus is highly sensitive to N-methyl-D-aspartate (NMDA) in secreting mammalian gonadotropin-releasing hormone (mGnRH). Indeed, doses equivalent to and up to 20-times lower than the hypothalamic concentration of endogenous NMDA, can significantly increase the amount of GnRH secreted by incubated hypothalamic tissue. L-glutamate (another excitatory amino acid) can also induce the secretion of mGnRH, and the data show for the first time that the post-synaptic biological potency of NMDA in evoking GnRH release is nearly 100-times higher than that of L-glutamate. Further work is in progress to clarify the molecular mechanisms that underlie NMDA's role in modulating mGnRH secretion and release
Extrabulbar olfactory system and nervus terminalis FMRFamide immunoreactive components in Xenopus laevis ontogenesis
No full textThe extrabulbar olfactory system (EBOS) is a collection of nerve fibers which originate from primary olfactory receptor-like neurons and penetrate into the brain bypassing the olfactory bulbs. Our description is based upon the application of two neuronal tracers (biocytin, carbocyanine DiI) in the olfactory sac, at the cut end of the olfactory nerve and in the telencephalon of the developing clawed frog. The extrabulbar olfactory system was observed already at stage 45, which is the first developmental stage compatible with our techniques; at this stage, the extrabulbar olfactory system fibers terminated diffusely in the preoptic area. A little later in development, i.e. at stage 50, the extrabulbar olfactory system was maximally developed, extending as far caudally as the rhombencephalon. In the metamorphosing specimens, the extrabulbar olfactory system appeared reduced in extension; caudally, the fiber terminals did not extend beyond the diencephalon. While a substantial overlapping of biocytin/FMRFamide immunoreactivity was observed along the olfactory pathways as well as in the telencephalon, FMRFamide immunoreactivity was never observed to be colocalized in the same cellular or fiber components visualized by tracer molecules. The question whether the extrabulbar olfactory system and the nervus terminalis (NT) are separate anatomical entities or represent an integrated system is discussed. © 2004 Elsevier B.V. All rights reserved
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