+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Pardo, J. R. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 4 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order A Low Noise NbTiN-Based 850 GHz SIS Receiver for the Caltech Submillimeter Observatory Author(s): Kooi, J. W.; Kawamura, J.; Chen, J.; Chattopadhyay, G.; Pardo, J. R.; Zmuidzinas, J.; Phillips, T. G.; Bumble, B.; Stern, J.; LeDuc, H. G. Abstract: We have developed a niobium titanium nitride (NbTiN) based superconductor- insulator-superconductor (SIS) receiver to cover the 350 micron atmospheric window. This frequency band lies entirely above the energy gap of niobium ... NASA Center: Ames Research Center, Goddard Space Flight Center, Jet Propulsion Laboratory Publication Year: 2000 Added to NTRS: 2008-06-02 Document ID: 20000080186 Six Years of Short-Spaced Monitoring of the v=1 and v=2 J=1-0 (28)SiO Maser Emission in Evolved Stars Author(s): Alcolea, J.; Pardo, J. R.; Bujarrabal, V.; Bachiller, R.; Barcia, A.; Colomer, F.; Gallego, J. D.; Gomez-Gonzalez, J.; delPino, A.; Planesas, P., et al. Abstract: We present the results from a monitoring of the v=1 and v=2 J=1-0 (28)SiO maser emission in 21 objects, covering all types of known SiO maser emitters: 13 Mira variables, 2 long period semiregulars (SRGs), 3 variable ... NASA Center: Goddard Space Flight Center Publication Year: 1999 Added to NTRS: 2008-06-02 Document ID: 20000028417 Atmospheric Transmission at Microwaves (ATM): An Improved Model for mm/Submm Applications Author(s): Pardo, J. R.; Cernicharo, J.; Serabyn, E. Abstract: We present a model of the longwave atmospheric spectrum which improves in many respects widely used old models such as MPM since it is based on recent broadband measurements and calculations. The model is applicable from 0 ... NASA Center: Goddard Space Flight Center Publication Year: 2001 Added to NTRS: 2008-06-02 Document ID: 20010028470 Submillimeter FTS Measurements of Atmospheric Opacity above Mauna Kea Author(s): Serabyn, E.; Weisstein, E. W.; Lis, D. C.; Pardo, J. R. Abstract: We present accurately calibrated submillimeter atmospheric transmission spectra obtained with an FTS at the Caltech Submillimeter Observatory on Mauna Kea, Hawaii. These measurements cover the 0.9 to 0.3 mm wavelength range, ... NASA Center: Goddard Space Flight Center Publication Year: 1997 Added to NTRS: 2004-11-03 Document ID: 19990018466 + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007