Results 31 to 40 of about 849,396 (352)
A method for lift coefficient estimation of a pantograph using sparse modelling
Nihon Kikai Gakkai ronbunshu, 2018 It is necessary for pantographs of Japanese high-speed trains to satisfy both low noise characteristics and insensitive lift force characteristics toward the variation in wind direction and in the shape of pantograph head due to wear.
Yoshitaka YAMASHITA +2 more
doaj +1 more source
Label-Free Biomedical Imaging Using High-Speed Lock-In Pixel Sensor for Stimulated Raman Scattering
Sensors, 2017 Raman imaging eliminates the need for staining procedures, providing label-free imaging to study biological samples. Recent developments in stimulated Raman scattering (SRS) have achieved fast acquisition speed and hyperspectral imaging.
Kamel Mars +6 more
doaj +1 more source
Ultrastable low-noise current amplifier
, 2014 An ultrastable low-noise current amplifier (ULCA) is presented. The ULCA is a non-cryogenic instrument based on specially designed operational amplifiers and resistor networks.
Ahlers, Franz Josef +4 more
core +1 more source
A Low Noise Thermometer Readout for Ruthenium Oxide Resistors [PDF]
, 2002 The thermometer and thermal control system, for the Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission (ARCADE) experiment, is described, including the design, testing, and results from the first flight of ARCADE.
A. Kogut +7 more
core +3 more sources
Study on Noise Reduction with Paving Different Low Noise Pavement Materials
Applied Sciences, 2021 This paper evaluates the amount of noise reduction when using different pavement materials in two adjacent lanes, where the close-proximity (CPX) method is introduced to analyze the tire/road noise before and after pavement maintenance.
Minmin Yuan +3 more
doaj +1 more source
Precise Characterization and Multiobjective Optimization of Low Noise Amplifiers [PDF]
, 2015 Although practically all function blocks of the satellite navigation receivers are realized using the CMOS digital integrated circuits, it is appropriate to create a separate low noise antenna preamplifier based on a low noise pHEMT. Such an RF front end
Cerny, D. +7 more
core +2 more sources
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Four-point probe resistivity noise measurements of GaSb layers [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2020 This paper concerns measurements and calculations of low frequency noise for semiconductor layers with four-probe electrodes. The measurements setup for the voltage noise cross-correlation method is described.
L. Ciura +3 more
doaj +1 more source
Low-noise microwave polarimeter [PDF]
, 1973 Two quarterwave-plate polarizers inserted between rotary waveguide joints transform received signals from arbitrary linear to circular polarizations and then from circular to fixed linear polarizations.
Bathker, D. A. +2 more
core +1 more source
A low‐noise high‐speed diode laser current controller [PDF]
, 1993 We describe a new diode laser current controller which features low current noise, excellent dc stability, and the capacity for high‐speed modulation.
Hall, J. L., Libbrecht, K. G.
core +1 more source