Results 31 to 40 of about 2,426,974 (209)
Карантин і захист рослинGoal. The purpose of this study was to verify the effectiveness of determination of atrazine residues in alfalfa using ultra-high-performance liquid chromatography and tandem mass spectrometry. Methods.
Yinghui Zhu, T. Rozhkova
doaj +1 more source
, 2016 Quantum metrology exploits entangled states of particles to improve sensing precision beyond the limit achievable with uncorrelated particles. All previous methods required detection noise levels below this standard quantum limit to realize the benefits ...
Engelsen, N. J. +3 more
core +1 more source
Accuracy of Expired BinaxNOW Rapid Antigen Tests
Microbiology Spectrum, 2023 The widespread existence of expired antigen testing kits in households and potential coronavirus outbreaks necessitates evaluating the reliability of these expired kits.
Mary Jane E. Vaeth +13 more
doaj +1 more source
Estimating the resolution limit of the map equation in community detection
, 2015 A community detection algorithm is considered to have a resolution limit if the scale of the smallest modules that can be resolved depends on the size of the analyzed subnetwork.
Kawamoto, Tatsuro, Rosvall, Martin
core +2 more sources
TEM10 homodyne detection as an optimal small displacement and tilt measurements scheme [PDF]
, 2006 We report an experimental demonstration of optimal measurements of small displacement and tilt of a Gaussian beam - two conjugate variables - involving a homodyne detection with a TEM10 local oscillator.
Bachor, Hans A. +6 more
core +3 more sources
Numerical Optical Centroid Measurements
, 2013 Optical imaging methods are typically restricted to a resolution of order of the probing light wavelength $\lambda_p$ by the Rayleigh diffraction limit. This limit can be circumvented by making use of multiphoton detection of correlated $N$-photon states,
Evers, Jörg, Gulfam, Qurrat-ul-Ain
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Comparative analysis of Access PCT and Elecsys BRAHMS PCT assays for procalcitonin measurements [PDF]
Kosin Medical JournalBackground Procalcitonin (PCT) is a crucial biomarker for diagnosing sepsis and managing antibiotic therapy. This study evaluated the analytical performance and comparability of the Access PCT and Elecsys BRAHMS PCT assays.
Hyunji Choi +2 more
doaj +1 more source
Mixed models for longitudinal left-censored repeated measures
, 2004 Longitudinal studies could be complicated by left-censored repeated measures. For example, in Human Immunodeficiency Virus infection, there is a detection limit of the assay used to quantify the plasma viral load.
Genz +18 more
core +4 more sources
Calibration of a single atom detector for atomic micro chips [PDF]
, 2007 We experimentally investigate a scheme for detecting single atoms magnetically trapped on an atom chip. The detector is based on the photoionization of atoms and the subsequent detection of the generated ions.
A. Günther +11 more
core +2 more sources
Tratamento de dados censurados em estudos ambientais
Química Nova, 2014 Due to the inherent limitations of the analytical methods of measurement, environmental exposure data often present observations described as below a certain detection limit, also called left-censored data. Censored data directly interferes in almost all
Cristiano Christofaro +1 more
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