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COVID-19 rapid antigen tests or RATs, also frequently called COVID-19 lateral flow tests or LFTs, are rapid antigen tests used to detect SARS-CoV-2 infection ().They are quick to implement with minimal training, cost a fraction of other forms of COVID-19 testing, and give users a result within 5–30 minutes.
Accuracy is measured in terms of specificity and selectivity. Test errors can be false positives (the test is positive, but the virus is not present) or false negatives, (the test is negative, but the virus is present). [179] In a study of over 900,000 rapid antigen tests, false positives were found to occur at a rate of 0.05% or 1 in 2000. [180]
The COVID-19 pandemic in Spain has resulted in 13,980,340 [4] confirmed cases of COVID-19 and 121,852 [4] deaths.. The virus was first confirmed to have spread to Spain on 31 January 2020, when a German tourist tested positive for SARS-CoV-2 in La Gomera, Canary Islands. [3]
The electric field at the surface of a conductor is greatest where the curvature is sharpest, so corona discharge occurs first at sharp points, corners and edges. The terminals on very high voltage equipment are frequently designed with large diameter rounded shapes such as balls and toruses called corona caps, to suppress corona formation ...
The COVID-19 pandemic in Sweden is a part of the pandemic of coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).As of 22 March 2023, there have been 2,701,192 confirmed cumulative cases and 23,851 deaths with confirmed COVID-19 in Sweden. [1]
Corona discharges represent a significant power loss for electric utilities. The corona discharge around a high-voltage coil Corona discharge from a spoon attached to the high-voltage terminal of a Tesla coil Large corona discharges (white) around conductors energized by a 1.05-million-volt transformer in a U.S. NIST laboratory in 1941
Corona is a Mexican brand of beer produced by Grupo Modelo in Mexico and exported to markets around the world. Constellation Brands is the exclusive licensee and sole importer of Corona in the fifty states of the United States, Washington, D.C., and Guam.
Smith Corona is an American manufacturer of thermal labels, direct thermal labels, and thermal ribbons used in warehouses for primarily barcode labels.. Once a large U.S. typewriter and mechanical calculator manufacturer, Smith Corona expanded aggressively during the 1960s to become a broad-based industrial conglomerate with products extending to paints, foods, and paper.