Results 11 to 20 of about 213,817 (308)

Measuring Water Vapor with Differential Absorption Lidar

open access: yes, 2012
Despite the need for global measurements of water vapor profiles with low bias and high vertical resolution there is currently no operational remote sensing system that would deliver such data. A possible solution to this problem is offered by the differential absorption lidar (DIAL) approach. The basic principle of operation will be described and some
Martin Wirth, Wirth, Martin
openaire   +3 more sources

Achiral Plasmonic Antennas Enhance Differential Absorption To Increase Preferential Detection of Chiral Single Molecules. [PDF]

open access: yesACS Meas Sci Au
Plasmonic antennas increase the photon flux in their vicinity, which can lead to plasmon-enhanced fluorescence for molecules near these nanostructures. Here, we combine plasmon-coupled fluorescence and fluorescence-detected circular dichroism to build a ...
Chattopadhyay S, Biteen JS.
europepmc   +2 more sources

Measurements of Ozone Vertical Profiles in the Upper Troposphere–Stratosphere over Western Siberia by DIAL, MLS, and IASI

open access: yesAtmosphere, 2020
The purpose of this work is to measure the ozone vertical distribution (OVD) in the upper troposphere−stratosphere by differential absorption lidar (DIAL) at 299/341 nm and 308/353 nm and to compare and analyze the results against satellite data. А
Sergey Dolgii   +4 more
doaj   +1 more source

Differentiation of Amidase and  -Lactamase by Infrared Absorption [PDF]

open access: yesJournal of General Microbiology, 1964
SUMMARY: The carbonyl-β-lactam absorption band of penicillins and cephalosporins at 1760 cm.-1 is detectable when the antibiotics are mixed with enzymes or bacterial protein. This band can therefore be used for differentiating the two inactivating enzymes β-lactamase and amidase.
M J, CHAPMAN   +3 more
openaire   +2 more sources

Differential absorption radar techniques: surface pressure [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
Two radar pulses sent at different frequencies near the 60 GHz O2 absorption band can be used to determine surface pressure by measuring the differential absorption on and off the band.
L. Millán   +5 more
doaj   +1 more source

Differential absorption radar techniques: water vapor retrievals [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
Two radar pulses sent at different frequencies near the 183 GHz water vapor line can be used to determine total column water vapor and water vapor profiles (within clouds or precipitation) exploiting the differential absorption on and off the line.
L. Millán   +3 more
doaj   +1 more source

Performance Evaluation of an A Band Differential Absorption LIDAR Model and Inversion for the Ocean Surface Pressure from Low-Earth Orbit

open access: yesAtmosphere, 2023
Remote sensing of ocean surface pressure from space is very important, and differential absorption LIDAR and differential absorption radar are only two kinds of remote sensing instruments with this potential.
Guanglie Hong, Yu Dong, Huige Di
doaj   +1 more source

Development of a laser for differential absorption lidar measurement of atmospheric carbon dioxide [PDF]

open access: yes, 2014
In the quest for a better understanding of climate change, greater importance is attached to monitoring the levels of atmospheric carbon dioxide to gain an improved knowledge of sources and sinks.
Cameron F. Rae   +10 more
core   +1 more source

Absorption, scattering and shadow by a noncommutative black hole with global monopole

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In this paper, we investigate the process of massless scalar wave scattering due to a noncommutative black hole with a global monopole through the partial wave method.
M. A. Anacleto   +3 more
doaj   +1 more source

Boundary-layer water vapor profiling using differential absorption radar [PDF]

open access: yesAtmospheric Measurement Techniques, 2018
Remote sensing of water vapor in the presence of clouds and precipitation constitutes an important observational gap in the global observing system. We present ground-based measurements using a new radar instrument operating near the 183 GHz ...
R. J. Roy   +6 more
doaj   +1 more source

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