Results 161 to 170 of about 7,116 (192)

Facing and Overcoming Sensitivity Challenges in Biomolecular NMR Spectroscopy. [PDF]

Angew Chem Int Ed Engl, 2015
Ardenkjaer-Larsen JH, Boebinger GS, Comment A, Duckett S, Edison AS, Engelke F, Griesinger C, Griffin RG, Hilty C, Maeda H, Parigi G, Prisner T, Ravera E, van Bentum J, Vega S, Webb A, Luchinat C, Schwalbe H, Frydman L.   +18 more
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Water masers in the L1448C outflow

The Astrophysical Journal, 1995
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Astronomical water masers

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Efficient detection of water masers

Nature, 1988
During the past 15 years almost 190 natural sources of 22 GHz water maser emission have been found in the dusty circumstellar shells of late-type stars undergoing mass-loss. Numbered among these sources are ∼75% of the Mira variables within 400 pc of the Sun1, although only 34% of Miras in general are associated with OH masers2.
B. M. Lewis, D. Engels
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Modelling interstellar water masers

Astrophysics and Space Science, 1995
Radiative transfer calculations for interstellar H2O have been performed using accelerated A-iteration (ALI) techniques. The results show strong maser action from known maser transitions, as well as predicting new strong maser transitions for ν > 1.5 THz. © 1995 Kluwer Academic Publishers.
Yates, JA, Gray, MD, Field, D
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Hydroxyl and Water Masers in Protostars

Science, 1969
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Water masers in red supergiants

Astronomical & Astrophysical Transactions, 2006
Results of long-term monitoring of circumstellar water maser sources in red supergiants are reviewed. The observations were carried out in 1980–2006 on the RT-22 radio telescope at Pushchino Radio Astronomy Observatory. We discuss the results for the semiregular variable M-supergiant VX Sgr and non-variable M-supergiant IRC–10414.
M. I. Pashchenko, G. M. Rudnitskij, V. A. Samodurov, A. M. Tolmachev   +3 more
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Interstellar hydroxyl and water masers and formaldehyde masers and dasars

Reports on Progress in Physics, 1974
A review of the observational data on anomalous emission by OH, H2O and H2CO molecules and on anomalous absorption by H2CO molecules. Various theories advanced to account for these data and some models of a few particular sources are discussed.
D ter Haar, M A Pelling
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Submillimeter water masers

1993
The excitation of maser emission in millimeter and submillimeter transitions of interstellar and circumstellar water is considered. Using an escape probability method, the equilibrium populations in 349 rotational states of both ortho- and para-water have been determined under varying conditions of gas temperature, density, water abundance and ...
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