Results 71 to 80 of about 414,744 (286)

Bias-Reduced Localization for Drone Swarm Based on Sensor Selection

Sensors
To address the problem of accurate localization of high-speed drone swarm intrusions, this paper adopts time difference of arrival (TDOA) and frequency difference of arrival (FDOA) measurements, aiming to improve the performance of estimating the motion ...
Bo Wu, Bazhong Shen, Yonggan Zhang, Li Yang, Zhiguo Wang   +4 more
doaj   +1 more source

Observations of radio pulses from CU Virginis [PDF]

, 2010
The magnetic chemically peculiar star CU Virginis is a unique astrophysical laboratory for stellar magnetospheres and coherent emission processes. It is the only known main sequence star to emit a radio pulse every rotation period.
Babcock, Bigg, Borra, Braithwaite, D. J. Champion, D. Melrose, D. Wickramasinghe, Deutsch, Donati, G. Hobbs, Hatzes, Havnes, Hobbs, J. D. Bray, Johnson, L. Ferrario, Leto, M. Keith, Manchester, Melrose, Pyper, R. N. Manchester, R. P. Norris, Sault, Stenflo, Stevens, Stȩpień, Tatebe, Townsend, Trigilio, Trigilio, Ud-Doula, V. Ravi   +32 more
core   +3 more sources

Two-Dimensional Frequency-Difference-of-Arrival Varieties

This paper studies Frequency-Difference-of-Arrival (FDOA) curves for the 2-dimensional, 2-sensor case. The primary focus of this paper is to give a description of curves associated to the FDOA problem from the algebro-geometric point of view. To be more precise, the complex projective picture of the family of FDOA curves for all possible relative ...
Duflot, Jeanne, Cheney, Margaret, Given, James A.   +2 more
openaire   +2 more sources

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Fast TDOA and FDOA Estimation for Coherent Pulse Signals

International Journal of Antennas and Propagation, 2022
Time difference of arrival (TDOA) and frequency difference of arrival (FDOA) have been widely used for localizing temporally continuous signals passively.
Yan Liu, Fucheng Guo
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

A PORTABLE HF RECEIVING COMPLEX FOR FREGUENCY-AND-ANGULAR SOUNDING OF THE IONOSPHERE

Radio Physics and Radio Astronomy, 2014
The paper presents the functional diagram and principle of operation of a portable HF receiving complex intended for measuring angles of arrival, Doppler frequency shifts and group time delays of probe signals used for remote radio sensing of the ...
V. G. Galushko, A. S. Kascheev, S. B. Kascheev, I. I. Pikulik, Y. M. Yampolski   +4 more
doaj   +1 more source