Results 11 to 20 of about 906,253 (267)
As coronavirus disease 2019 (COVID-19) continues to spread around the world, the establishment of decentralized severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) diagnostics and point-of-care testing is invaluable.
Kai-Feng Hung +8 more
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Capacity limits in face detection [PDF]
Face detection is a prerequisite for further face processing, such as extracting identity or semantic information. Those later processes appear to be subject to strict capacity limits, but the location of the bottleneck is unclear. In particular, it is not known whether the bottleneck occurs before or after face detection.
Qarooni, Rana; id_orcid 0000-0001-9219-8760 +3 more
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Fully Integrated Photoacoustic NO2 Sensor for Sub-ppb Level Measurement
A fully integrated photoacoustic nitrogen dioxide (NO2) sensor is developed and demonstrated. In this sensor, an embedded photoacoustic cell was manufactured by using an up-to-date 3D printing technique.
Yang Dong +5 more
doaj +1 more source
How Low Can It Go? ATR-FTIR Characterization of Compounds Isolated from Ginger at the Nanogram Level
This proof-of-concept study demonstrated the potential of attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy for the structural characterization of natural products when only very small quantities of the target compound are ...
Joel B. Johnson +3 more
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Stochastic Time Response and Ultimate Noise Performance of Adsorption-Based Microfluidic Biosensors
In order to improve the interpretation of measurement results and to achieve the optimal performance of microfluidic biosensors, advanced mathematical models of their time response and noise are needed. The random nature of adsorption–desorption and mass
Ivana Jokić +5 more
doaj +1 more source
Cr-MOF-Based Electrochemical Sensor for the Detection of P-Nitrophenol
Cr-MOF nanoparticles were synthesized by a simple hydrothermal method, and their morphology and structure were characterized by SEM, TEM, and XRD techniques.
Chao Hu +3 more
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Effect of UV Scattering on Detection Limit of SO2 Cameras
SO2 ultraviolet (UV) camera technology has been successfully applied to the accurate imaging detection of pollutant gas concentration; however, the actual detection ability of this technology has not been intensively studied, especially the detection ...
Kuijun Wu +6 more
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Limits of Detecting Extraterrestrial Civilizations
The search for extraterrestrial intelligence (SETI) is a scientific endeavor which struggles with unique issues -- a strong indeterminacy in what data to look for and when to do so. This has led to attempts at finding both fundamental limits of the communication between extraterrestrial intelligence and human civilizations, as well as benchmarks so as ...
Ian George, Xinan Chen, Lav R. Varshney
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Resolution limit in community detection [PDF]
Detecting community structure is fundamental for uncovering the links between structure and function in complex networks and for practical applications in many disciplines such as biology and sociology. A popular method now widely used relies on the optimization of a quantity called modularity, which is a quality index for a partition of a network into
Fortunato, Santo, Barthelemy, Marc
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Detecting deception: the scope and limits [PDF]
With the increasing interest in the neuroimaging of deception and its commercial application, there is a need to pay more attention to methodology. The weakness of studying deception in an experimental setting has been discussed intensively for over half a century.
Sip, Kamila E +3 more
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