Results 51 to 60 of about 82,416 (187)

Integrated Polarimetric Spectral Imaging Sensor Combining Spectral Imaging and Polarization Modulation Techniques

Sensors
Polarimetric spectral imaging systems have unique application advantages in environmental remote sensing, military target recognition, astronomy, medicine, etc., because of their ability to acquire multidimensional information.
Zihao Liu, Zhiping Song, Zhengqiang Li, Li Li   +3 more
doaj   +1 more source

The Arecibo Observatory as an MST radar [PDF]

, 1983
The radars and other systems at the Arecibo Observatory were designed and built, originally, for incoherent-scatter and radio-astronomy research. More recently, important additions have been made for planetary radar and artificial RF heating of the ...
Woodman, R. F.
core   +1 more source

Space Radio Astronomy in the next 1000001 (binary) years

, 2012
Radio astronomy and active exploration of space are peers: both began by efforts of enthusiasts in the 1930s and got a major technological boost in the 1940s-50s.
Gurvits, L. I.
core   +1 more source

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

Advanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi, Jamal Alhourani, Yury Gogotsi, Mohammad H. Zarifi   +3 more
wiley   +1 more source

Deep Sky Objects Detection with Deep Learning for Electronically Assisted Astronomy

Astronomy
Electronically Assisted Astronomy is a fascinating activity requiring suitable conditions and expertise to be fully appreciated. Complex equipment, light pollution around urban areas and lack of contextual information often prevents newcomers from making
Olivier Parisot, Mahmoud Jaziri
doaj   +1 more source

An Adaptive Method for Star Extraction from Digital Astronomical Images [PDF]

فصلنامه علوم و فناوری فضایی, 2010
Celestial positioning has been used for navigation purposes for many years. Stars as the extra-terrestrial benchmarks provide unique opportunity in absolute point positioning.
M. A. Sharifi, F. Samadzadegan, Saeed Saeed Farzaneh   +2 more
doaj  

Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors

Advanced Science, EarlyView.
Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon, Kyungchul Noh, Minkyu Hwang, Yoon‐Jung Kim, Unjin Lee, Yeon Joo Ryu, Je‐Kyung Ryu, Sang Beom Jun, Se‐Young Choi, Woo‐Hyun Cho, Sung Joong Lee   +10 more
wiley   +1 more source

On the future of astrostatistics: statistical foundations and statistical practice

, 2012
This paper summarizes a presentation for a panel discussion on "The Future of Astrostatistics" held at the Statistical Challenges in Modern Astronomy V conference at Pennsylvania State University in June 2011.
A Gelman, A Webster, B Efron, B Efron, B Jackson, C J Miller, D Lynden-Bell, E D Feigelson, E D Feigelson, E Gosset, E J Zuiderwijk, E L Kaplan, J D Scargle, J G Scott, J. D. Scargle, J. D. Scargle, M J Bayarri, M Jordan, M Schmidt, M Woodroofe, N Meinshausen, R Development Core Team, R Protassov, R Weygaert van de, S M Stigler, Y P Varshni   +25 more
core   +1 more source

Design and performance of the first IceAct demonstrator at the South Pole [PDF]

, 2020
In this paper we describe the first results of IceAct, a compact imaging air-Cherenkov telescope operating in coincidence with the IceCube Neutrino Observatory (IceCube) at the geographic South Pole.
Aartsen, MG, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Alispach, C, Andeen, K, Anderson, T, Ansseau, I, Anton, G, Argüelles, C, Arlen, TC, Auffenberg, J, Axani, S, Backes, P, Bagherpour, H, Bai, X, Balagopal, BA, Barbano, A, Bartos, I, Barwick, SW, Bastian, B, Baum, V, Baur, S, Bay, R, Beatty, JJ, Becker, KH, Benzvi, S, Berley, D, Bernardini, E, Besson, DZ, Binder, G, Bindig, D, Blaufuss, E, Blot, S, Bohm, C, Bohmer, M, Botner, O, Bourbeau, E, Bourbeau, J, Bradascio, F, Braun, J, Bretz, T, Bron, S, Brostean-Kaiser, J, Burgman, A, Buscher, J, Busse, RS, Börner, M, Böser, S, Böttcher, J, Carver, T, Chen, C, Cheung, E, Chirkin, D, Choi, S, Clark, K, Classen, L, Clercq, CD, Coleman, A, Collin, GH, Conrad, JM, Coppin, P, Correa, P, Cowen, DF, Cross, R, Dave, P, De Vries, KD, De Wasseige, G, De With, M, Delaunay, JJ, Dembinski, H, Deoskar, K, Desiati, P, Deyoung, T, Diaz, A, Dujmovic, H, Dunkman, M, Duvernois, MA, Dvorak, E, Díaz-Vélez, JC, Eberhardt, B, Ehrhardt, T, Eller, P, Engel, R, Evans, JJ, Evenson, PA, Fahey, S, Farrag, K, Fazely, AR, Felde, J, Filimonov, K, Finley, C, Fox, D, Franckowiak, A, Friedman, E, Fritz, A, Ridder, SD, Tjus, JB   +99 more
core  

Early Detection of Cell Death Using Transmembrane Water Exchange Magnetic Resonance Imaging

Advanced Science, EarlyView.
Cell death is important in both the development and treatment of cancer. In this study, it is demonstrated for the first time that a specific measurement of the transmembrane water exchange rate using magnetic resonance imaging can be used as an early marker of cell death in mammalian cells, in animals and in human patients. Abstract Cell death plays a
Athanasia Kaika, Luca Nagel, Ulrike Höckendorf, Bangwen Xie, Geoffrey J. Topping, Mathias Schillmaier, Irina Beer, Frits H. A. van Heijster, Julian Rauch, Tristan A. Kuder, Sandra Sühnel, Bernd Erber, Christian Lohrmann, Simone Ballke, Thomas Metzler, Katja Steiger, Philipp J. Jost, Natalia P. Ivleva, Philipp Paprottka, Jonathan Nadjiri, Kevin M. Brindle, Wolfgang A. Weber, Franz Schilling   +22 more
wiley   +1 more source