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In both these types, the cups are sealed with a lid through which the ignition source can be introduced. Closed cup testers normally give lower values for the flash point than open cup (typically 5–10 °C or 9–18 °F lower) and are a better approximation to the temperature at which the vapour pressure reaches the lower flammable limit. In ...
Today there is an absolute thermodynamic temperature scale. Internationally agreed temperature scales are designed to approximate this closely, based on fixed points and interpolating thermometers. The most recent official temperature scale is the International Temperature Scale of 1990. It extends from 0.65 K (−272.5 °C; −458.5 °F) to ...
Minimum temperature map of the United States from 1871–1888 Maximum temperature map of the United States from 1871–1888. The following table lists the highest and lowest temperatures recorded in the 50 U.S. states, the District of Columbia, and the 5 inhabited U.S. territories during the past two centuries, in both Fahrenheit and Celsius. [1]
Daytime highs in Sweden's municipal seats vary from 19 °C (66 °F) to 24 °C (75 °F) in July and −9 °C (16 °F) to 3 °C (37 °F) in January. The colder temperatures are influenced by the higher elevation in the northern interior. At sea level, the coldest average highs range from 21 °C (70 °F) to −6 °C (21 °F).
Winters are mild to chilly, with a January daily average temperature of 42.1 °F (5.6 °C). Snow occurs sporadically in winter, with an average seasonal snowfall of 2.7 inches (6.9 cm). Ice storms and freezing rain pose a greater danger, as they can often pull tree limbs down on power lines and make driving hazardous.
The 1918–1920 flu pandemic, also known as the Great Influenza epidemic or by the common misnomer Spanish flu, was an exceptionally deadly global influenza pandemic caused by the H1N1 subtype of the influenza A virus.
The most comprehensive meta-analysis available (19 studies with over 3.9 million participants) found "no statistically significant association between ADHD medications [including methylphenidate] and the risk of cardiovascular event among children and adolescents, young and middle-aged adults, or older adults"; [44] as do other systematic ...
The SeV F protein is a type I membrane glycoprotein that is synthesized as an inactive precursor (F 0) that must be activated by proteolytic cleavage at residue arginine-116. [4] After the cleavage F 0 precursor yields two disulfide-linked subunits F 1 and F 2. [298] Paramyxoviruses use different host cell proteases to activate their F-proteins.