Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Robert A. Beaudet"'
Publikováno v:
Advances in Space Research. 57:2022-2026
NASA policy restricts the total number of bacterial spores that can remain on a spacecraft traveling to any planetary body which might harbor life or have evidence of past life. Hydrazine, N2H4, is commonly used as a propellant on spacecraft. Hydrazi
Autor:
Robert A. Beaudet
Publikováno v:
Advances in Space Research. 51:2261-2268
NASA Planetary Protection Policy requires that Category IV missions such as those going to the surface of Mars include detailed assessment and documentation of the bioburden on the spacecraft at launch. In the prior missions to Mars, the approaches u
Publikováno v:
Astrobiology. 8:1169-1182
Dry heat microbial reduction is the NASA-approved sterilization method to reduce the microbial bioburden on spaceflight hardware for missions with planetary protection requirements. The method involves heating the spaceflight hardware to temperatures
Autor:
Robert A. Beaudet, Wayne Schubert
Publikováno v:
SAE International Journal of Aerospace. 1:40-46
Autor:
Robert A. Beaudet, Yaomin Lin
Publikováno v:
The Journal of Physical Chemistry. 98:8310-8314
Autor:
Wayne Schubert, Robert A. Beaudet
Publikováno v:
Astrobiology. 11(3)
Exposing flight hardware to dry heat is a NASA-approved sterilization method for reducing microbial bioburden on spacecraft. The existing NASA specification only allows heating the flight hardware between 104°C and 125°C to reduce the number of via
Publikováno v:
The Journal of Physical Chemistry. 97:5864-5867
Ab initio structure and vibrational frequency calculations have been performed on the weakly bonded CO-02 complex at the SCF and MP2 levels of approximation. Minima were found for the two linear structures, specifically CO- C12 and OC-C12, with the l
Publikováno v:
The Journal of Physical Chemistry. 96:4140-4143
High-resolution rovibrational absorption spectra of the weakly bonded CO-Cl{sub 2} complex have been recorded in the 2143-cm{sup {minus}1} region by exciting the CO chromophore with a tunable diode laser. The spectra indicate that CO-Cl{sub 2} is lin
Publikováno v:
SAE Technical Paper Series.
This paper will present the lethality data that has been collected at this time and the planned future studies. The results show that rapid ramp-up heating times are critical to obtaining valid lethality data at high temperatures because an extensive
Autor:
Matthew J. Picton, Paul T. Brain, Michael Bühl, Mark A. Fox, David W. H. Rankin, Linda Li, Robert Greatrex, Robert A. Beaudet, Alireza Nikrahi, Heather E. Robertson
Publikováno v:
Inorganic chemistry. 37(9)
The molecular structure of nido-1,2-C(2)B(3)H(7), 1, the principal volatile carborane generated in the quenched gas-phase reaction of B(4)H(10) and ethyne at 70 degrees C, has been determined by a combined analysis of gas-phase electron-diffraction d