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Nikolay Beketov
Nikolay Nikolayevich Beketov (russian: Николай Николаевич Бекетов; , Alferovka (now Beketovka), Penza Governorate, Russian Empire – , St. Petersburg, Russian Empire) was a Russian Imperial physical chemist and metallurgist. He was the father of a well-known Russian architect Alexei Beketov. Life and work In 1849, Beketov graduated from Kazan University and worked with Nikolay Zinin. In 1855, he became a junior scientific assistant in the Department of Chemistry at Kharkov University. In 1859–1887, Beketov was a professor at the same university. In 1865, he defended his PhD thesis on "Research into the phenomenon of displacement of one element by another" ("russian: Исследования над явлениями вытеснения одних металлов другими"). In 1886, Beketov moved to Saint Petersburg, where he worked at the academic chemical laboratory and taught at the University for Women. In 1890, Beketov delivered lecture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beketov N
Beketov is a Russian male surname. Its feminine counterpart is Beketova. Notable people with the surname include: *Aleksandr Beketov (born 1970), Russian épée fencer and Olympic gold medalist *Andrey Beketov (1825–1902), Russian botanist *Artyom Beketov (born 1984), Russian football player *Mikhail Beketov (1958–2013), editor-in-chief of "Khimkinskaya Pravda", defender of the Khimki Forest *Nikolay Beketov (1827–1911), Russian chemist **Beketov (crater), a lunar crater named after Nikolay Beketov *Pyotr Beketov, 17th-century Russian explorer and voevoda of Siberian Cossacks *Sofia Beketova (born 1948), Russian rower *Vladimir Beketov ;Other uses *Arkhitektora Beketova (Kharkiv Metro) Arkhitektora Beketova ( uk, Архітектора Бекетова, ) is a station on Kharkiv Metro's Oleksiivska Line The Oleksiivska line ( uk, Олексіївська лінія, russian: Алексеевская линия) is the third a ..., a metro station in Kharkiv, Ukraine {{di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesium
Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 of the periodic table) it occurs naturally only in combination with other elements and it almost always has an oxidation state of +2. It reacts readily with air to form a thin passivation coating of magnesium oxide that inhibits further corrosion of the metal. The free metal burns with a brilliant-white light. The metal is obtained mainly by electrolysis of magnesium salts obtained from brine. It is less dense than aluminium and is used primarily as a component in strong and lightweight alloys that contain aluminium. In the cosmos, magnesium is produced in large, aging stars by the sequential addition of three helium nuclei to a carbon nucleus. When such stars explode as supernovas, much of the magnesium is expelled into the interstellar medium where it ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemists From The Russian Empire
A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms. Chemists carefully measure substance proportions, chemical reaction rates, and other chemical properties. In Commonwealth English, pharmacists are often called chemists. Chemists use their knowledge to learn the composition and properties of unfamiliar substances, as well as to reproduce and synthesize large quantities of useful naturally occurring substances and create new artificial substances and useful processes. Chemists may specialize in any number of subdisciplines of chemistry. Materials scientists and metallurgists share much of the same education and skills with chemists. The work of chemists is often related to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Blok
Alexander Alexandrovich Blok ( rus, Алекса́ндр Алекса́ндрович Бло́к, p=ɐlʲɪˈksandr ɐlʲɪˈksandrəvʲɪtɕ ˈblok, a=Ru-Alyeksandr Alyeksandrovich Blok.oga; 7 August 1921) was a Russian lyrical poet, writer, publicist, playwright, translator and literary critic. Early life Blok was born in Saint Petersburg, into an intellectual family of Alexander Lvovich Blok and Alexandra Andreevna Beketova. His father was a law professor in Warsaw, and his maternal grandfather, Andrey Beketov, was a famous botanist and the rector of Saint Petersburg State University. After his parents' separation, Blok lived with aristocratic relatives at the manor Shakhmatovo near Moscow, where he discovered the philosophy of Vladimir Solovyov, and the verse of then-obscure 19th-century poets, Fyodor Tyutchev and Afanasy Fet. These influences would affect his early publications, later collected in the book ''Ante Lucem''. Career and marriage In 1903 he married the actress ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavian Flavitsky
Flavian may refer to: * A member of the Flavian dynasty of Roman emperors, during the late 1st century AD, or their works * Flavian Zeija, a Ugandan lawyer, academic and judge. Principal Judge of Uganda, since December 2019. * A person named Flavianus Flavianus—the adjectival form of the name Flavius in Latin—may refer to: * M. Pompeius Silvanus Staberius Flavianus, a 1st-century Roman consul * L. Septimius Flavianus Flavillianus, a 3rd-century Roman athlete * Faustus Flavianus, fully Marc ... Religious leaders * Flavian, one of the Martyrs of Carthage under Valerian * Flavian of Ricina (fl. c. 3rd century), bishop in Italy * Bishops or patriarchs in Asia: ** Flavian I of Antioch (c. 320–404) ** Archbishop Flavian of Constantinople (died 449) ** Patriarch Fravitta of Constantinople (died 489) ** Flavian II of Antioch (died 518) Ships *, an Italian cruise ship See also * Constantinian dynasty, also called the Neo-Flavian dynasty * Flavian Amphitheater (the Colosseum) * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Eltekov
Alexander is a male given name. The most prominent bearer of the name is Alexander the Great, the king of the Ancient Greek kingdom of Macedonia who created one of the largest empires in ancient history. Variants listed here are Aleksandar, Aleksander and Aleksandr. Related names and diminutives include Iskandar, Alec, Alek, Alex, Alexandre, Aleks, Aleksa and Sander; feminine forms include Alexandra, Alexandria, and Sasha. Etymology The name ''Alexander'' originates from the (; 'defending men' or 'protector of men'). It is a compound of the verb (; 'to ward off, avert, defend') and the noun (, genitive: , ; meaning 'man'). It is an example of the widespread motif of Greek names expressing "battle-prowess", in this case the ability to withstand or push back an enemy battle line. The earliest attested form of the name, is the Mycenaean Greek feminine anthroponym , , (/Alexandra/), written in the Linear B syllabic script. Alaksandu, alternatively called ''Alakasandu'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petersburg Academy Of Sciences
The Russian Academy of Sciences (RAS; russian: Росси́йская акаде́мия нау́к (РАН) ''Rossíyskaya akadémiya naúk'') consists of the national academy of Russia; a network of scientific research institutes from across the Russian Federation; and additional scientific and social units such as libraries, publishing units, and hospitals. Peter the Great established the Academy (then the St. Petersburg Academy of Sciences) in 1724 with guidance from Gottfried Leibniz. From its establishment, the Academy benefitted from a slate of foreign scholars as professors; the Academy then gained its first clear set of goals from the 1747 Charter. The Academy functioned as a university and research center throughout the mid-18th century until the university was dissolved, leaving research as the main pillar of the institution. The rest of the 18th century continuing on through the 19th century consisted of many published academic works from Academy scholars and a few Ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kharkov
Kharkiv ( uk, Ха́рків, ), also known as Kharkov (russian: Харькoв, ), is the second-largest city and municipality in Ukraine.Kharkiv "never had eastern-western conflicts" '''' (23 October 2014) Located in the northeast of the country, it is the largest city of the historic region. Kharkiv is the of |
Science
Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old. The earliest written records in the history of science come from Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE. Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of classical antiquity, whereby formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages, but was preserved in the Muslim world during the Islamic Golden Age and later by the efforts of Byzantine Greek scholars who brought Greek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Chemistry
Physical chemistry is the study of macroscopic and microscopic phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry, statistical mechanics, analytical dynamics and chemical equilibria. Physical chemistry, in contrast to chemical physics, is predominantly (but not always) a supra-molecular science, as the majority of the principles on which it was founded relate to the bulk rather than the molecular or atomic structure alone (for example, chemical equilibrium and colloids). Some of the relationships that physical chemistry strives to resolve include the effects of: # Intermolecular forces that act upon the physical properties of materials ( plasticity, tensile strength, surface tension in liquids). # Reaction kinetics on the rate of a reaction. # The identity of ions and the electrical conductivity of materials. # Surface science and electrochemistry of cell membrane ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aluminothermic Reaction
Aluminothermic reactions are exothermic chemical reactions using aluminum as the reducing agent at high temperature. The process is industrially useful for production of alloys of iron. The most prominent example is the thermite reaction between iron oxides and aluminum to produce iron itself: : Fe2O3 + 2 Al → 2 Fe + Al2O3 This specific reaction is however not relevant to the most important application of aluminothermic reactions, the production of ferroalloys. For the production of iron, a cheaper reducing agent, coke, is used instead via the carbothermic reaction. History Aluminothermy started from the experiments of Russian scientist Nikolay Beketov at the University of Kharkiv in Ukraine, who proved that aluminum restored metals from their oxides under high temperatures. The reaction was first used for the carbon-free reduction of metal oxides. The reaction is highly exothermic, but it has a high activation energy since strong interatomic bonds in the solids m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxide
An oxide () is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula. "Oxide" itself is the dianion of oxygen, an O2– (molecular) ion. with oxygen in the oxidation state of −2. Most of the Earth's crust consists of oxides. Even materials considered pure elements often develop an oxide coating. For example, aluminium foil develops a thin skin of Al2O3 (called a passivation layer) that protects the foil from further corrosion.Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann. . Stoichiometry (the measurable relationship between reactants and chemical equations of a equation or reaction) Oxides are extraordinarily diverse in terms of stoichiometries and in terms of the structures of each stoichiometry. Most elements form oxides of more than one stoichiometry. A well known example is carbon monoxide and carbon dioxide.Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
