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The Ham test is a blood test used in the diagnosis of paroxysmal nocturnal hemoglobinuria (PNH). Patient red blood cells (RBCs) are placed in mild acid; a positive result (increased RBC fragility) indicates PNH or congenital dyserythropoietic anemia. [1] [2] This is now an obsolete test for diagnosing PNH due to its low sensitivity and ...
FCC amateur radio station license of Al Gross. In the United States, amateur radio licensing is governed by the Federal Communications Commission (FCC). Licenses to operate amateur stations for personal use are granted to individuals of any age once they demonstrate an understanding of both pertinent FCC regulations and knowledge of radio station operation and safety considerations.
Danicopan, sold under the brand name Voydeya, is a medication used for the treatment of paroxysmal nocturnal hemoglobinuria. It is a complement inhibitor which reversibly binds to factor D to prevent alternative pathway-mediated hemolysis and deposition of complement C3 proteins on red blood cells. The most common side effects include fever, headache, increased levels of liver enzymes (a sign ...
The sucrose hemolysis test was developed in the 1960s. [2] Hartmann and Jenkins first described the test in 1966. [3] [4] The test was devised as a superior screen for PNH compared to the Ham's acid hemolysis test (HT) that was developed in the 1930s. [2] For decades, these two tests were the primary methods of diagnosing PNH. [2]
The Amateur radio R-S-T system signal report format currently in use was first developed in 1934. [citation needed] As early as 1943, the U.S and UK military published the first guidance that included the modern "Weak but readable", "Strong but distorted", and "Loud and clear" phrases. [citation needed]
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An exam, authorized by the Federal Communications Commission (FCC), is required for all levels of the Amateur Radio license. These exams are administered by Volunteer Examiners, accredited by the FCC-recognized Volunteer Examiner Coordinator (VEC) system.
The S stands for "Strength". Strength is an assessment of how powerful the received signal is at the receiving location. Although an accurate signal strength meter can determine a quantitative value for signal strength, in practice this portion of the RST code is a qualitative assessment, often made based on the S meter of the radio receiver at the location of signal reception.
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