Results 31 to 40 of about 657,845 (275)
TRIPPy: Trailed Image Photometry in Python [PDF]
, 2016 Photometry of moving sources typically suffers from reduced signal-to-noise (SNR) or flux measurements biased to incorrect low values through the use of circular apertures.
Alexandersen, Mike +8 more
core +4 more sources
A Real-Time Adaptive Station Beamforming Strategy for Next Generation Phased Array Radio Telescopes
SensorsThe next generation phased array radio telescopes, such as the Square Kilometre Array (SKA) low frequency aperture array, suffer from RF interference (RFI) because of the large field of view of antenna element.
Guoliang Peng +4 more
doaj +1 more source
Design of 3D SAW Filters Based on the Spectral Element Method
IEEE Access, 2023 Surface acoustic wave (SAW) devices are key components in 5G communication systems, and the design of SAW filters with high frequency, high performance and high reliability is a necessary and challenging task. In this work, SAW resonators with $LiNbO_{3}
Yiwen Yao +4 more
doaj +1 more source
Airborne Multi-functional Maritime Surveillance Radar System Design and Key Techniques
Leida xuebao, 2019 As the main task load of the airborne platform for sea detection, the airborne multi-functional marine surveillance radar system has the following characteristics: the ability to operate in all weather conditions regularly, a wide detection range, and a ...
JIANG Qian, WU Hao, WANG Yanyu
doaj +1 more source
Method of forming aperture plate for electron microscope [PDF]
, 1974 An electron microscope is described with an electron source a condenser lens having either a circular aperture for focusing a solid cone of electrons onto a specimen or an annular aperture for focusing a hollow cone of electrons onto the specimen.
Heinemann, K.
core +1 more source
Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells
Molecular Oncology, EarlyView.We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller +17 more
wiley +1 more source
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2016 Directivity pattern (DP) or graphical representation of the dependence of gain factor (directivity gain) of antennas on the direction of the antenna in the target plane is the main characteristic that describes its directional properties.
A. B. Садченко +3 more
doaj +1 more source
Hydroacoustic Bottom Soil Profiling Device with Synthetic Aperture
Известия высших учебных заведений России: Радиоэлектроника, 2023 Introduction. Acoustic profiling is a conventional method for studying the geological structure of the seabed. To this end, a low-frequency acoustic profiler with an operating frequency range of 1…14 kHz can be used.
A. V. Vagin, A. S. Vorotyntseva
doaj +1 more source
Pattern Synthesis of Dual-band Shared Aperture Interleaved Linear Antenna Arrays [PDF]
, 2014 This paper presents an approach to improve the efficiency of an array aperture by interleaving two different arrays in the same aperture area. Two sub-arrays working at different frequencies are interleaved in the same linear aperture area. The available
Ding, J., Guo, C. J., Guo, H.
core +1 more source
Wide field interferometric imaging with single-mode fibers [PDF]
, 2002 Classical single-mode fiber interferometers, using one fiber per aperture, have very limited imaging capabilities and small field of view. Observations of extended sources (resolved by one aperture) cannot be fully corrected for wavefront aberrations ...
Berger +12 more
core +2 more sources