1,725,461 research outputs found
Anomalous H I in NGC 2997
No full textWe present deep H I observations of the moderately inclined spiral galaxy, NGC 2997. The goal of these observations was to search for H I clouds in the vicinity of NGC 2997 analogous to the high-velocity clouds of the Milky Way and gain insight into their origins. We find evidence for the presence of a galactic fountain as well as the accretion of intragalactic material, however we do not identify any large clouds of H I far from the disk of the galaxy. NGC 2997 has a thick, lagging H I disk that is modeled with a vertical velocity gradient of 18-31 km s-1 kpc-1. Anomalous velocity H I clouds with masses of order 107 M sun, which cannot be explained by galactic fountain models allow us to estimate a lower limit to the accretion of extragalactic gas of 1.2 M sun yr-1. The number and mass of these clouds have implications for cosmological simulations of large-scale structure and the presence of dark matter halos. We have used values from the literature to estimate a star formation rate of 5 ± 1 M sun yr-1 and to derive a new distance to NGC 2997 of 12.2 ± 0.9 Mpc using published Tully-Fisher relations
The Mystical Number 2997 (Kohli’s Number)
No full textThis paper is about discovering and figuring out the working behind the magical number 2997. Take any three-digit number, say XYZ and multiply each digit by 111 and take the sum, i.e., x*111 + y*111 + z*111.[Note: Does not have to be a 3-digit number] For any number, repeating these steps of multiplying and adding will guarantee that the answer becomes 2997 in a maximum of 4 repetitions
Evaluation of the 2-Aminomethylphenol JPC-2997 in Aotus Monkeys Infected with Plasmodium falciparum (Letter)
No full textPreviously, we reported JPC-2997 [4-(tert-Butyl)-2-((tert-butylamino)methyl)-6-(6-(trifluoromethyl)pyridin-3-yl)-phenol] to possess high in vitro antimalarial activity against Plasmodium falciparum lines, low cytotoxicity in mammalian cell lines, a long blood elimination half-life in Aotus monkeys (10.8 days), and potent in vivo efficacy against animal malaria models (1). Herein, as planned by Birrell et al., we report on the in vivo efficacy of JPC-2997 against the chloroquine- and quinine-resistant P. falciparum FVO strain in Aotus monkeys.No Full Tex
Anomalous H I in NGC 2997
No full textWe present deep H I observations of the moderately inclined spiral galaxy, NGC 2997. The goal of these observations was to search for H I clouds in the vicinity of NGC 2997 analogous to the high-velocity clouds of the Milky Way and gain insight into their origins. We find evidence for the presence of a galactic fountain as well as the accretion of intragalactic material, however we do not identify any large clouds of H I far from the disk of the galaxy. NGC 2997 has a thick, lagging H I disk that is modeled with a vertical velocity gradient of 18-31 km s-1 kpc-1. Anomalous velocity H I clouds with masses of order 107 M sun, which cannot be explained by galactic fountain models allow us to estimate a lower limit to the accretion of extragalactic gas of 1.2 M sun yr-1. The number and mass of these clouds have implications for cosmological simulations of large-scale structure and the presence of dark matter halos. We have used values from the literature to estimate a star formation rate of 5 ± 1 M sun yr-1 and to derive a new distance to NGC 2997 of 12.2 ± 0.9 Mpc using published Tully-Fisher relations
Засіб для позакореневої обробки насіннєвих посівів люцерни
No full textПат. 2997 Україна, МПК6 А 01 G 7/00. Засіб для позакореневої обробки насіннєвих посівів люцерни / В.М.Писаренко, П.В.Писаренко, В.М.Самородов, С.В.Поспелов ; власник Полтавський сільськогосподарський інститут. – заявл. 29.04.1994 – 1 с.Пропонуєть засіб для стимуляції плодутворення на насіннєвих посівах люцерн
Al cim del Pic de coma les Bienes (2997 m.)
No full textBoExcursió del dia 9 al 14 d'agost de 1973. Itinerari: d) Boí - Presa de Cavallers (1785 m.) - Barranc de Comalesbienes - Estanys de Comalesbienes (2610 m.) - Collet - Punta Alta de Comalesbienes (3014 m.) - Pic de Comalesbienes (2997 m.) - Presa de Cavaller
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
San Pedro, Los Angeles and Salt Lake Railroad ; Los Angeles and Salt Lake Railroad ; Profile ; Sixth Subdivision ; Station 2997 + 03.9 to Station 2785 + 51.1, Station 3221 + 39.2 to Station 2997 + 03.9 ; V 17 P 13, V 17 P 12
No full textSan Pedro, Los Angeles and Salt Lake Railroad ; Los Angeles and Salt Lake Railroad ; Profile ; Sixth Subdivision ; Station 2997 + 03.9 to Station 2785 + 51.1, Station 3221 + 39.2 to Station 2997 + 03.9 ; V 17 P 13, V 17 P 1
Condiciones físicas del medio gaseoso en NGC 2997
No full textObservaciones efectuadas desde Bosque Alegre han permitido establecer algunas características espectroscópicas de NGC 2997, en particular el comportamiento de la relación Hα/[NII] y de la densidad electrónica sobre un cuerpo principal.Asociación Argentina de Astronomí
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