Results 21 to 30 of about 47,819 (301)
A 3.6 GHz Polar Reflection-Type Vector Modulator Phase Shifter With Amplitude Control Capability
IEEE Access, 2023 This paper presents a new passive vector modulator phase shifter (VMPS) based on a polar architecture suitable for use in advanced beamforming feeding networks.
Raul Arruela +2 more
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Plants, 2023 Hydrogen peroxide at low concentrations has been used as a salt stress attenuator because it induces a positive response in the antioxidant system of plants. This study aimed to assess the gas exchange, quantum yield, and development of soursop plants cv.
Jessica Dayanne Capitulino +10 more
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A RADIOMETER FOR METEOROLOGICAL MEASUREMENTS WITH ACCURATE CALIBRATION BY THE SKY BRIGHTNESS TEMPERATURE [PDF]
Радиофизика и электроника, 2016 Methods for passive sensing the atmosphere in the microwave range are one of important directions of remote sensing of environmental protection. To develop simple and cost-effective technical solutions and radiometric measuring techniques is an important
V. A. Kabanov
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KNSwing—On the Mooring Loads of a Ship-Like Wave Energy Converter
Journal of Marine Science and Engineering, 2019 The critical function of keeping a floating Wave Energy Converter in position is done by a mooring system. Several WECs have been lost due to failed moorings, indicating that extreme loads, reliability and durability are very important aspects.
Kim Nielsen, Jonas Bjerg Thomsen
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An S/C/X-Band 4-Bit Digital Step Attenuator MMIC with 0.25 μm GaN HEMT Technology
Applied Sciences, 2022 In this paper, a 4-bit digital step attenuator using 0.25 μm GaN HEMT technology for wideband radar systems is presented. A switched-path attenuator topology with resistive T-type attenuators and double-pole double-throw (DPDT) switches was used to ...
Jeong-Geun Kim, Kang-Hee Lee
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Light attenuation coefficient of polarization attenuator at high attenuation level
Acta Physica Sinica, 2010 By use of the Jones vector we deduced the Jones matrix of actual polarizer and light transmission expression, as well as the light attenuation coefficient （LAC） of two polarizers. According to computation, certain error exists when using Malus-Law to calculate polarizer’s light attenuation ratio at high attenuation level.
null Huang Chong +3 more
openaire +1 more source
Heliyon, 2017 Objectives: Transradial access for percutaneous coronary intervention (PCI) reduces procedural complications however, there are concerns regarding the potential for increased exposure to ionizing radiation to the primary operator.
Azriel B. Osherov +6 more
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RHESSI Observations of the Solar Flare Iron-line Feature at 6.7 keV [PDF]
, 2006 Analysis of RHESSI 3--10 keV spectra for 27 solar flares is reported. This energy range includes thermal free--free and free--bound continuum and two line features, at 6.7keV and 8keV, principally due to highly ionized iron (Fe).
Antonucci E. +5 more
core +2 more sources
Attenuation correction in SPECT without attenuation map [PDF]
2011 IEEE Nuclear Science Symposium Conference Record, 2011 A method of attenuation correction in Single Photon Emission Computed Tomography (SPECT), based on emission data only is presented. The algorithm uses the well known Helgason-Ludwig consistency conditions. However, it does not attempt to find the attenuation map, but rather the correction factors for the projection data, which makes the problem simpler
openaire +2 more sources
The The Albany M4 project: Demonstrating WA’s wave energy potential
International Marine Energy JournalThe paper presents elements of the design, manufacturing and deployment of a wave energy converter demonstrator in Albany, on the south coast of Western Australia (WA). The project, funded by WA Department of Primary Industries and Regional Development,
Christophe Gaudin +8 more
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