Results 31 to 40 of about 8,661,373 (377)
Journal of Integrative Agriculture, 2022 Denitrification-induced nitrogen (N) losses from croplands may be greatly increased by intensive fertilization. However, the accurate quantification of these losses is still challenging due to insufficient available in situ measurements of soil ...
Yan LIU +9 more
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A Solid Trap and Thermal Desorption System with Application to a Medical Electronic Nose
Sensors, 2008 In this paper, a solid trap/thermal desorption-based odorant gas condensation system has been designed and implemented for measuring low concentration odorant gas. The technique was successfully applied to a medical electronic nose system.
Xuntao Xu +5 more
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Detection of amplitude modulation with squeezed light for sensitivity beyond the shot-noise limit [PDF]
, 1988 An improvement in precision beyond the limit set by the vacuum-state or zero-point fluctuations of the electromagnetic field is reported for the detection of amplitude modulation encoded on a weak signal beam. The improvement is achieved by employing the
Kimble, H. J., Wu, Ling-An, Xiao, Min
core +1 more source
Learning Something From Nothing: The Critical Importance of Rethinking Microbial Non-detects
Frontiers in Microbiology, 2018 Accurate estimation of microbial concentrations is necessary to inform many important environmental science and public health decisions and regulations.
Alex Ho Shing Chik +4 more
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Concentration Sensitivity of Nucleic Acid and Protein Molecule Detection Using Nanowire Biosensors
Biophysica, 2021 The concentration detection limit (DL) of biomacromolecules attainable using a nanowire detector has become a topical issue. A DL of 10−15 M is required to reveal oncological and infectious diseases at an early stage.
Yuri D. Ivanov +3 more
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Spectral Assessment of Organic Matter with Different Composition Using Reflectance Spectroscopy
Remote Sensing, 2021 Soil surveys are critical for maintaining sustainable use of natural resources while minimizing harmful impacts to the ecosystem. A key soil attribute for many environmental factors, such as CO2 budget, soil fertility and sustainability, is soil organic ...
Nicolas Francos +2 more
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Hydrogel-Based Sensors for Ethanol Detection in Alcoholic Beverages
Sensors, 2019 A fast and reliable determination of the ethanol concentration is essential in the analysis of alcoholic beverages. However, different factors like pH value or salt concentration can influence the ethanol measurement.
Jan Erfkamp +2 more
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A converyor belt-based small article pollution monitoring instrument and performance test
He jishu, 2022 Background At present, most of the contamination detection equipments for small items in domestic nuclear power plants are manually putting in and taking out the testing items, and the operation time is long and the steps are relatively tedious ...
QIAO Minjuan +6 more
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Quantum-optical communication rates through an amplifying random medium [PDF]
, 2002 We study the competing effects of stimulated and spontaneous emission on the information capacity of an amplifying disordered waveguide. At the laser threshold the capacity reaches a "universal" limit, independent of the degree of disorder.
A. L. Moustakas +23 more
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Applied Sciences, 2023 The objectives of this paper will be to discuss the issues related to the determination of the limits of detection (LOD) in laser-induced breakdown spectroscopy (LIBS) analytical applications. The derivation of the commonly used ‘3-sigma over slope’ rule
Francesco Poggialini +6 more
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