نتایج جستجو برای: moon

تعداد نتایج: 9039  

Journal: :Horizons 1977

Journal: :Highlights of Astronomy 1968

Journal: :Nature 2007

Journal: :Physics Today 2014

2011
Patrick Pinet Audrey Jaeger Emmanuel Cordier Gaël Potin Matthieu Le Corre

Most animals, including birds, have cyclic life histories and numerous studies generally conducted on captive animals have shown that photoperiod is the main factor influencing this periodicity. Moon cycles can also affect periodic behavior of birds. Few studies have investigated the influence of these environmental cues in natural settings, and particularly in tropical areas where the change i...

Journal: :Science 1998
A B Binder

Lunar Prospector is providing a global map of the composition of the moon and analyzing the moon's gravity and magnetic fields. It has been in a polar orbit around the moon since 16 January 1998. Neutron flux data show that there is abundant H, and hence probably abundant water ice, in the lunar polar regions. Gamma-ray and neutron data reveal the distribution of Fe, Ti, and other major and tra...

2006
Carlos López Nozal Raúl Marticorena Sánchez Yania Crespo Francisco Javier Pérez García

Using metamodels to keep source code information is one of the current trends in refactoring tools. This representation makes possible to detect refactoring opportunities, and to execute refactorings on metamodel instances. This paper describes an approach to language independent reuse in metamodel based refactoring detection and execution. We use an experimental metamodel, MOON, and analyze th...

Journal: :Current Biology 2014
Michael Smith Ilona Croy Kerstin Persson Waye

effects were observed on wakefulness (WASO) or time in slow wave (SWS, low frequency (0.5 Hz–2 Hz) high amplitude (>75 μV) EEG activity), non-REM or REM sleep. Additionally, no effects were found on total number of sleep stage changes, awakenings or arousals. Cajochen et al. found effects on melatonin, electroencephalography (EEG)-delta activity and stage 4 sleep, parameters not measured in the...

2012
Paul Spudis Carlé Pieters

Despite the major achievements in studying the Moon during the last quarter-century, our global knowledge is still patchy and incomplete. Although the Moon is so close, access has always been limited. Half of the Moon remained completely unknown until spacecraft could be sent around it. Even with the Apollo program and the Soviet and U.S. robotic lunar explorations, humans have directly explore...

1996
Yanben Han Peiyu Zhang

The Chinese ancient accounts of timing observations of 48 lunar eclipses and the secular variation of the Earth's spin speed are discussed. A series of T expressing the secular deceleration of the Earth's rotation was obtained. The average increase rate of length of the day is about 1.5 milliseconds per century.

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