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4 hours ago · a M + is the ionic activity, which is considered equal to the concentration (mol · L −1) of that ion for the cases of diluted solutions (Toshiaki et al. 2018) For practical applications, F is 96,485 C · mol −1, T is 298 K, and R is 8.314 J · K −1 · mol −1. Therefore, considering these values and converting the natural logarithm to ...
4 hours ago · Background: Vaccination is one of the most effective medical interventions to prevent infectious diseases. The introduction of vaccines against coronavirus acute respiratory syndrome 2 (SARS-CoV-2) was aimed at preventing severe illness and death due to coronavirus disease 2019 (COVID-19). Solid organ transplant recipients (SOTRs) are at high risk of infection with SARS-CoV-2 and serious ...
1 day ago · Incident Command System. ICS basic organization chart (ICS-100 level depicted) The Incident Command System ( ICS) is a standardized approach to the command, control, and coordination of emergency response providing a common hierarchy within which responders from multiple agencies can be effective. [1]
4 hours ago · Jimmy Carter 's tenure as the 39th president of the United States began with his inauguration on January 20, 1977, and ended on January 20, 1981. Carter, a Democrat from Georgia, took office following his narrow victory over Republican incumbent president Gerald Ford in the 1976 presidential election. His presidency ended following his ...
1 day ago · Irony, in its broadest sense, is the juxtaposition of what on the surface appears to be the case and what is actually the case or to be expected. It typically figures as a rhetorical device and literary technique. In some philosophical contexts, however, it takes on a larger significance as an entire way of life.
1 day ago · Chemistry. Nicotine is a hygroscopic, colorless to yellow-brown, oily liquid, that is readily soluble in alcohol, ether or light petroleum. It is miscible with water in its neutral amine base form between 60 °C and 210 °C. It is a dibasic nitrogenous base, having K b1 =1×10 −6, K b2 =1×10 −11. [161]
4 hours ago · The symbol was introduced at Geneva in 1864, as a counter example to the crescent and cross used by two of Iran's rivals, the Ottoman and the Russian empires. Although that claim is inconsistent with the Red Crescent's history, that history also suggests that the Red Lion and Sun, like the Red Crescent, may have been conceived during the 1877–1878 war between Russia and Turkey .
