Results 111 to 120 of about 108,539 (309)

Adsorption Way of the Loss of Moon's Atmosphere [PDF]

Theory on gas adsorption by lunar surface to explain loss of lunar ...
Gutkin, A. M., Markov, M. S., Raitbrud, Ts. M., Slonimskaya, M. V.   +3 more
core   +1 more source

Random Mutagenesis in Porphyromonas gingivalis Enables Isolation of Mutants With Enhanced Secreted Protease Activity

Molecular Oral Microbiology, EarlyView.
ABSTRACT Porphyromonas gingivalis is a key pathogen in periodontitis, with secreted proteases as major virulence factors. We developed a screening method to generate and identify P. gingivalis mutants with elevated protease activity. Mutations were induced using the mutagens 2,6‐diaminopurine (2,6‐DAP) or ethyl methanesulfonate (EMS), and the ...
Takeru Nakabayashi, Satoshi Yuhara, Kosei Tanaka   +2 more
wiley   +1 more source

The micrometeoroid complex and evolution of the lunar regolith [PDF]

The interaction of the micrometeoroid complex with the lunar surface is evidenced by numerous glass-lined microcraters on virtually every lunar surface exposed to space.
Brownlee, D. E., Gault, D. E., Hartung, J. B., Hoerz, F., Morrison, D. A., Oberbeck, V. R., Quaide, W. L., Vedder, J. F.   +7 more
core   +1 more source

The Chandrayaan-2 Large Area Soft X-ray Spectrometer (CLASS) [PDF]

, 2011
The CLASS experiment on Chandrayaan-2, the second Indian lunar mission, aims tomap the abundance of the major rock forming elements on the lunar surface using the technique of X-ray fluorescence during solar flare events.
Athiray, P.S., Balaji, G., Bug, M., Chetty, S. V., Gow, J., Howe, C., Kulkarni, R., Kumar,, Manoj, R., Narendranath, S., Radhakrishna, V., Sreekantha, C. V., Sreekumar, P., Sudhakar, M., Thyagaraj, M. R., Tyagi, A., Unnikrishnan, U.   +16 more
core  

Variations in downslope activity and bottom current dynamics in a land‐detached submarine channel system since the Last Glacial Maximum

Sedimentology, EarlyView.
ABSTRACT The Gollum Channel System is a land‐detached large‐scale canyon‐channel system situated offshore southwest Ireland on the Northeast Atlantic margin. The system has been considered inactive with downslope gravity flows since the last glacial period, but geophysical data in some of its branches do suggest Holocene activity.
Lotte Verweirder, Aggeliki Georgiopoulou, Kobus Langedock, Fred Fourie, Martin White, Sara Benetti, Fabio Sacchetti, Wieter Boone, David Van Rooij   +8 more
wiley   +1 more source

Design and Development of Energy Particle Detector on China’s Chang’e-7

Aerospace
Particle radiation on the Moon is influenced by a combination of galactic cosmic rays, high-energy solar particles, and secondary particles interacting on the lunar surface.
Liping Wang, Guohong Shen, Huanxin Zhang, Donghui Hou, Shenyi Zhang, Xianguo Zhang, Zida Quan, Jiajie Liao, Wentao Ji, Ying Sun   +9 more
doaj   +1 more source

The 1990-1991 project summaries [PDF]

Project summaries for 1990-91 at the Georgia Institute of Technology are presented. The following research projects were studied: a lunar surface vehicle model; lunar loader/transporter; trenching and cable-laying device for the lunar surface; a lunar ...

core   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

Use of lunar produced propellants for manned Mars missions [PDF]

Manned Mars Mission departures from low lunar orbit (LLO), L2, and low Earth orbit (LEO), using oxygen or oxygen and hydrogen produced on the Lunar surface; or Phobos produced propellants; are compared to departures from LEO using Earth produced ...
Babb, Gus R., Stump, William R.
core   +1 more source

Spaceflight and sport science: Physiological monitoring and countermeasures for the astronaut–athlete on Mars exploration missions

Experimental Physiology, EarlyView.
Abstract Long‐duration spaceflight impacts essentially every system in the human body, resulting in multisystem deconditioning that might impair the health and performance of crewmembers, particularly on long‐duration exploration missions to Mars. In this review, we apply the sport science model of athlete monitoring, testing and training to astronauts;
Luke DeVirgiliis, Nicholas J. Goode, Kurt W. McDowell, Kirk L. English, Robert Novo, Virina Botros, Ginika Agwu, Jessica M. Scott, Lori L. Ploutz‐Snyder   +8 more
wiley   +1 more source