Literature
Alkylation and acylation of phenols according to Friedel-Crafts Alkylation of phenol
Alkylation of phenol with epichlorohydrinThe reaction of addition of phenol to epichlorohydrin can occur in a neutral, acidic or alkaline medium. In a neutral environment, epichlorohydrin and phenol must be heated for several hours at 155-160°, otherwise
Liquid-crystalline polymers can be controlled The nature of the liquid-crystalline state of matter
We publish a transcript of a lecture by a senior researcher at the Department of Macromolecular Compounds of the Faculty of Chemistry of Moscow State University, Associate Professor, Doctor of Chemical Sciences, laureate of the President of the Russian Federation Prize for Young Scientists for 2009 Alexey Bobrovs
Application of the electron paramagnetic resonance method in the study of oils and dispersed organic matter
Magnetic resonance is based on the resonant (selective) absorption of radio frequency radiation by atomic particles placed in a constant magnetic field. Most elementary particles, like tops, rotate around their own axis. If frequent
Semiconductor resistors
A semiconductor diode is a two-electrode device with one-way conductivity. Its design is based on an equilibrium p-n junction. Based on the nature of junction formation, diodes are divided into point and planar. For conversion,
Quasar mass. Quasar - what is it? Gravity creates lenses
> Quasar is the active nucleus of a galaxy at the initial stage of development: research, description and characteristics with photos and videos, powerful magnetic field, structure and types. The most interesting thing in science is finding something unusual. At first, scientists do not understand at all why
History of journalism The 16th Congress of the CPSU took place in
On February 23 - March 3, 1981, the XXVI Congress of the Communist Party of the Soviet Union took place in Moscow. The Report of the CPSU Central Committee to the Congress revealed the multifaceted activities of the party in the 70s in the struggle for peace and the development of international cooperation.
Correct chronology in Rus'
In the Slavic-Aryan Calendar - Our calendar and all history until 1700 was canceled by Peter 1 Our Slavic-Aryan (Orthodox, pagan, Russian, Old Believer, etc.) calendar and all history until 1700 was canceled and crossed out by Peter the Great first
Scientific works of James Maxwell
Many scientific publications and magazines have recently published articles about achievements in physics and modern scientists, and publications about physicists of the past are rare. We would like to correct this situation and remember one of the outstanding physicists of the past
Oleg Mityaev Oleg Mityaev biography briefly about the main thing
For tourists and the sociable public, Mityaev means “It’s great that we are all gathered here today.” For the restaurant public it is “Unsharpened Knives” and other songs from the repertoire of M. Shufutinsky. Of those who love the original song, some unconditionally appropriate
Grand Duchy of Lithuania in the 14th century Territory of Lithuania in the 14th century
In the XIV-XV centuries. The Grand Duchy of Lithuania and Russia was a real rival of Muscovite Rus' in the struggle for dominance in Eastern Europe. It strengthened under Prince Gediminas (ruled 1316-1341). Russian cultural influence prevailed here at this time. Ge
