Zobrazeno 1 - 10
of 46
pro vyhledávání: '"J. A. MacAskill"'
Publikováno v:
The Astrophysical Journal. 712:194-197
Carbon dioxide (CO2), methanol (CH3OH), ethanol (CH3CH2OH), and formic acid (HCOOH) have been formed in collisions of a superthermal, 9 eV beam of O(3 P) atoms with CH4 molecules, with an over coat of CO molecules, adsorbed on a gold surface at 4.8 K
Autor:
J. A. MacAskill, M. R. Darrach, B. J. Shortt, A. Chutjian, P. Ehrenfreund, Stojan Madzunkov, Gianfranco Vidali
Publikováno v:
The Astrophysical Journal. 697:801-806
Formaldehyde (H2CO) and carbon dioxide (CO2) were produced in collisions of a superthermal, 3 eV beam of H(2S) atoms with CO molecules adsorbed on a gold surface at 4.8 K. The reaction-generated products were detected and analyzed using the technique
Autor:
Randall E. Mielke, Terry J. McGenity, Stojan Madzunkov, J. A. MacAskill, Benjamin Brunner, Max Coleman, Jae Young Yu
Publikováno v:
Earth and Planetary Science Letters. 270:63-72
The solution chemistry during the initial (slow increase of dissolved iron and sulfate) and main stage (rapid increase of dissolved iron and sulfate) of pyrite leaching by Acidithiobacillus ferrooxidans ( Af ) at a starting pH of 2.05 shows significa
Autor:
T J Reddish, J A MacAskill, W. A. van Wijngaarden, D. P. Seccombe, M. Łukomski, C McGrath, W. Kedzierski, S. Sutton, J Teeuwen, J W McConkey
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 38:3535-3545
A new magneto-optical trap designed specifically for the measurement of absolute electron impact cross sections is described. Experimental results for electron impact total cross sections involving 6 2 S ground state Cs are presented over the energy
Publikováno v:
43rd International Conference on Environmental Systems.
We report progress towards developing the micro-Gas Monitor (mGM), a miniature gas chromatograph mass spectrometer. The mGM is planned to have a total mass of 2.5kg and consume approximately 22W of power, including pumps and all electronics. The inst
Autor:
R. T. Schaefer, J. Kenny, A. P. Croonquist, Benjamin Bornstein, S. M. Madzunkov, Ara Chutjian, J. A. MacAskill, Murray Darrach, Lukas Mandrake, Seungwon Lee, Richard D. Kidd, D. Karmon, N. Toomarian, J. Hofman, V. Garkanian
Publikováno v:
42nd International Conference on Environmental Systems.
We report on trace gas and major atmospheric constituents results obtained by the Vehicle Cabin Atmosphere Monitor (VCAM) following almost two years of operation aboard the International Space Station (ISS). VCAM is an autonomous environmental monito
Autor:
Murray Darrach, Ara Chutjian, Benjamin Bornstein, S. M. Madzunkov, Richard D. Kidd, T. M. Rust, D. Karmon, W. M. Heinrichs, R. T. Schaefer, Lukas Mandrake, Seungwon Lee, A. P. Croonquist, N. Toomarian, J. A. MacAskill, J. Hofman, V. Garkanian, V. R. Haemmerle, J. Kenny, J. L. Thomas
Publikováno v:
41st International Conference on Environmental Systems.
We report on trace gas and major atmospheric constituents results obtained by the Vehicle Cabin Atmosphere Monitor (VCAM) during operations aboard the International Space Station (ISS). VCAM is an autonomous environmental monitor based on a miniature
Publikováno v:
AIP Conference Proceedings.
Preliminary results are presented for the use of an auxiliary radiofrequency (rf) excitation voltage in combination with a high purity, high voltage rf generator to perform dipole excitation within a high precision Paul ion trap. These results show t
Publikováno v:
New Zealand Journal of Marine and Freshwater Research. 27:71-85
Natural temperature in a 30 km reach of the Waikato River during autumn 1984 varied synchronously across the channel and for practical purposes can be assumed transversely uniform (within 0.03°C). Significant differences between sites were found in
Autor:
Ara Chutjian, B. J. Shortt, M. Mojarradi, R. T. Schaefer, M. R. Darrach, Stojan Madzunkov, J. A. MacAskill
Publikováno v:
The Review of scientific instruments. 79(9)
Reported herein is development of a quadrupole mass spectrometer controller (MSC) with integrated radio frequency (rf) power supply and mass spectrometer drive electronics. Advances have been made in terms of the physical size and power consumption o