Results 41 to 50 of about 19,079 (137)

Removal of acid gases and oxides of nitrogen from space cabin atmospheres [PDF]

Removal of acid gases and oxides of nitrogen from spacecraft cabin atmospheres at ambient ...
Bethea, R. M., Graham, R. R., Gully, A. J., Meador, M. C.   +3 more
core   +1 more source

High resolution 10 mu spectrometry at different planetary latitudes. A practical Hadamard transform spectrometer for astronomical application [PDF]

Infrared observations at different latitudes were studied in order to obtain spectra in the 10 micrometers region to understand differences in chemical composition or physical structure of the optical features.
Briotta, D. A., Jr., Dain, F. W., Harwit, M., Kameth, M., King, L. W., Melnick, G., Stasavage, G., Tai, M. H.   +7 more
core   +1 more source

Optimum Chemical Balance Weighing Design for p = v= 1 Objects Based on Balanced Block Designs

, 2009
W pracy omówiona jest tematyka estymacji nieznanych miar p obiektów w n pomiarach w modelu chemicznego układu wagowego. Zakłada się, że każdym pomiarze nie wszystkie obiekty biorą udział. Podane zostały warunki, przy spełnieniu których istnienie chemicznego układu wagowego dla p = v obiektów implikuje istnienie chemicznego układu wagowego dla p = v + 1
openaire   +1 more source

CO2 Reduction Assembly Prototype Using Microlith-Based Sabatier Reactor for Ground Demonstration [PDF]

The utilization of CO2 to produce life support consumables, such as O2 and H2O, via the Sabatier reaction is an important aspect of NASA's cabin Atmosphere Revitalization System (ARS) and In-Situ Resource Utilization (ISRU) architectures for both low ...
Abney, Morgan B., Hawley, Kyle, Junaedi, Christian, Perry, Jay L., Roychoudhury, Subir, Walsh, Dennis   +5 more
core   +1 more source

Modeling and Analysis of Power Processing Systems [PDF]

The feasibility of formulating a methodology for the modeling and analysis of aerospace electrical power processing systems is investigated. It is shown that a digital computer may be used in an interactive mode for the design, modeling, analysis, and ...
Fegley, K. A., Hayden, J. H., Rehmann, D. W.   +2 more
core   +1 more source

Pioneer Mars 1979 mission options [PDF]

A preliminary investigation of lower cost Mars missions which perform useful exploration objectives after the Viking/75 mission was conducted. As a study guideline, it was assumed that significant cost savings would be realized by utilizing Pioneer ...
Friedlander, A. L., Hartmann, W. K., Niehoff, J. C.   +2 more
core   +1 more source

The casting and powder-metallurgy forming of precipitation-hardenable stainless steels [PDF]

Casting and powder metallurgy techniques for shaping precipitation hardened stainless ...
Barth, V. D., Kura, J. G., Mc Intire, H. O.   +2 more
core   +1 more source

Evaluation and characterization of the methane-carbon dioxide decomposition reaction [PDF]

A program was conducted to evaluate and characterize the carbon dioxide-methane (CO2-CH4) decomposition reaction, i.e., CO2 + CH4 = 2C + 2H2O. The primary objective was to determine the feasibility of applying this reaction at low temperatures as a ...
Davenport, R. J., Schubert, F. H., Shumar, J. W., Steenson, T. S.   +3 more
core   +1 more source

Projection of distributed-collector solar-thermal electric power plant economics to years 1990-2000 [PDF]

A preliminary comparative evaluation of distributed-collector solar thermal power plants was undertaken by projecting power plant economics of selected systems to the 1990 to 2000 time frame. The selected systems include: (1) fixed orientation collectors
Elgabalawi, N., Fujita, T., Herrera, G., Turner, R. H.   +3 more
core   +1 more source

Sustainable grout for structural repairs incorporating waste master board and fiber: experimental study and RSM-based evaluation. [PDF]

Sci Rep
Hlail SH, Al-Nawasir R, Alturki R, Khan MI.   +3 more
europepmc   +1 more source