Zobrazeno 1 - 10
of 1 232
pro vyhledávání: '"M. Ledvina"'
Publikováno v:
Annales Geophysicae, Vol 24, Pp 1443-1453 (2006)
An all-sky imager was installed in Asmara, Eritrea (15.4° N, 38.9° E, 7° N dip) and used to monitor the OI 630-nm nightglow. Nine months of data were studied between September 2001 and May 2002, a time including the recent maximum in the solar
Externí odkaz:
https://doaj.org/article/2426fb8843504e68af406e74aaad57d3
Akademický článek
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Publikováno v:
Annales Geophysicae, Vol 22, Pp 3109-3121 (2004)
Over 300 nights of airglow and GPS scintillation data collected between January 2002 and August 2003 (a period near solar maximum) from the Haleakala Volcano, Hawaii are analyzed to obtain the seasonal trends for the occurrence of equatorial plasma
Externí odkaz:
https://doaj.org/article/d5729d9386a142f2a7e3dfb8127c69a3
Akademický článek
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Autor:
Petr Cigler, Milos Nesladek, Veronika Benson, Martin Bunček, A. Fiserova, M. Ledvina, Vladimira Petrakova, Jan Stursa
Efficient delivery of stabilized nucleic acids (NAs) into cells and release of the NA payload are crucial points in the transfection process. Here we report on the fabrication of a nanoscopic cellular delivery carrier that is additionally combined wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dafd4570ad2a00a37e47618fd6a407a3
http://hdl.handle.net/1942/22075
http://hdl.handle.net/1942/22075
Autor:
Brent M. Ledvina
Publikováno v:
IEEE Transactions on Aerospace and Electronic Systems. 47:2921-2933
An algorithm has been developed that efficiently generates in-phase and quadrature carrier replicas over a range of Doppler shift frequencies and initial phase offsets. This algorithm provides a new method that aids in bit-wise parallel baseband mixi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd382744493eaf12ef3af4109a206441
https://doi.org/10.1109/taes.2011.6034674
https://doi.org/10.1109/taes.2011.6034674
Publikováno v:
IEEE Transactions on Aerospace and Electronic Systems. 46:1609-1623
A large set of equatorial ionospheric scintillation data has been compiled, used to characterize features of severe scintillation that impact Global Positioning System phase tracking, and used to develop a scintillation testbed for evaluating trackin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8009d005728a644c41cb9df16a6b80e9
https://doi.org/10.1109/taes.2010.5595582
https://doi.org/10.1109/taes.2010.5595582
Autor:
Parsch, Eli V.1 (AUTHOR) eli.parsch@afacademy.af.edu, Franz, Anthony L.2 (AUTHOR), Dao, Eugene V.3 (AUTHOR), Wu, Dong L.4 (AUTHOR), Swarnalingam, Nimalan4,5 (AUTHOR), Salinas, Cornelius C. J. H.4 (AUTHOR), Emmons, Daniel J.2 (AUTHOR) eli.parsch@afacademy.af.edu
Publikováno v:
Frontiers in Astronomy & Space Sciences. 2024, p1-16. 16p.
Publikováno v:
Nanoscale. 7(29)
We show that fluorescent nanodiamonds (FNDs) are among the few types of nanosensors that enable direct optical reading of noncovalent molecular events. The unique sensing mechanism is based on switching between the negatively charged and neutral stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9d041d333e829328451639577b6c205
https://pubmed.ncbi.nlm.nih.gov/26138745
https://pubmed.ncbi.nlm.nih.gov/26138745
Autor:
Paul M. Kintner, Brent M. Ledvina
Publikováno v:
Advances in Space Research. 35:788-811
This article is a review of Global Navigation Satellite Systems (GNSS) for space scientists who are interested in how GNSS signals and observables can be used to understand ionospheric dynamics and, conversely, how ionospheric dynamics affect the ope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::926e9f7531e5475610a80ed8ac57c3be
https://doi.org/10.1016/j.asr.2004.12.076
https://doi.org/10.1016/j.asr.2004.12.076