Results 281 to 290 of about 372,055 (343)
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Miniature mass spectrometers and their potential for clinical point-of-care analysis.
Mass spectrometry reviews (Print), 2023Mass spectrometry (MS) has become a powerful technique for clinical applications with high sensitivity and specificity. Different from conventional MS diagnosis in laboratory, point-of-care (POC) analyses in clinics require mass spectrometers and ...
Yanbing Zhai, Xinyan Fu, Wei Xu
semanticscholar +1 more source
An ultraminiaturized spectrometer
Science, 2022Scaling down spectrometers could allow their application in consumer ...
Jorge, Quereda +1 more
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Review of MEMS Based Fourier Transform Spectrometers
Micromachines, 2020 Fourier transform spectrometers (FTS), mostly working in infrared (IR) or near infrared (NIR) range, provide a variety of chemical or material analysis with high sensitivity and accuracy and are widely used in public safety, environmental monitoring and ...
Junyu Chai
exaly +2 more sources
Review of portable near infrared spectrometers: Current status and new techniques
Journal of Near Infrared Spectroscopy, 2022Near infrared (NIR) spectroscopy is a non-destructive detection technology involving NIR spectral data acquisition and chemometric treatment. The use of an NIR spectrometer is evidently crucial in this regard; however, traditional benchtop NIR ...
Chenxi Zhu +4 more
semanticscholar +1 more source
Applied Optics, 1970
The theory and performance are described of a small portable second derivative spectrometer, the d(2)spectrometer. The physical principles of the apparatus permit detection of gases by absorption spectrometry with sensitivities two or more orders of magnitude greater than is attainable by use of more conventional spectrometers. When the spectrometer is
D T, Williams, R N, Hager
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The theory and performance are described of a small portable second derivative spectrometer, the d(2)spectrometer. The physical principles of the apparatus permit detection of gases by absorption spectrometry with sensitivities two or more orders of magnitude greater than is attainable by use of more conventional spectrometers. When the spectrometer is
D T, Williams, R N, Hager
openaire +2 more sources
Applied Optics, 1979
A general formula for the calculation of the signal to noise ratio (SNR) of a spectroscopic measurement is derived, and its factors are discussed. Particular attention is paid to identify which losses are necessarily present in the measurement and which can be avoided or reduced.
B, Carli, V, Natale
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A general formula for the calculation of the signal to noise ratio (SNR) of a spectroscopic measurement is derived, and its factors are discussed. Particular attention is paid to identify which losses are necessarily present in the measurement and which can be avoided or reduced.
B, Carli, V, Natale
openaire +2 more sources
2008 IEEE Nuclear Science Symposium Conference Record, 2008
The OPERA neutrino experiment at the underground Gran Sasso Laboratory was designed to perform the first detection of neutrino oscillations in the appearance mode, through the study of νμ to νΤ oscillations and subsequent measurement of the tau decay products.
Bergnoli, A +16 more
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The OPERA neutrino experiment at the underground Gran Sasso Laboratory was designed to perform the first detection of neutrino oscillations in the appearance mode, through the study of νμ to νΤ oscillations and subsequent measurement of the tau decay products.
Bergnoli, A +16 more
openaire +2 more sources
Analytical Chemistry, 2002
A new spectrometer, here denoted the SLIM (simple, low-power, inexpensive, microcontroller-based) spectrometer, was developed that exploits the small size and low cost of solid-state electronic devices. In this device, light-emitting diodes (LED), single-chip integrated circuit photodetectors, embedded microcontrollers, and batteries replace ...
Kevin M, Cantrell, James D, Ingle
openaire +2 more sources
A new spectrometer, here denoted the SLIM (simple, low-power, inexpensive, microcontroller-based) spectrometer, was developed that exploits the small size and low cost of solid-state electronic devices. In this device, light-emitting diodes (LED), single-chip integrated circuit photodetectors, embedded microcontrollers, and batteries replace ...
Kevin M, Cantrell, James D, Ingle
openaire +2 more sources
Applied Optics, 2011
This is a proposal and description of a new spectrometer based on the Schwarzschild optical system. The proposed design contains two Schwarzschild optical systems. Light diverging from the spectrometer entrance slit is collimated by the first one; the collimated light beam hits a planar diffraction grating and the light dispersed from the grating is ...
M Dolores, Mouriz +4 more
openaire +2 more sources
This is a proposal and description of a new spectrometer based on the Schwarzschild optical system. The proposed design contains two Schwarzschild optical systems. Light diverging from the spectrometer entrance slit is collimated by the first one; the collimated light beam hits a planar diffraction grating and the light dispersed from the grating is ...
M Dolores, Mouriz +4 more
openaire +2 more sources