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Konstantin Mereschkowsky
Konstantin Sergeevich Mereschkowski ( rus, Константи́н Серге́евич Мережко́вский, p=mʲɪrʲɪˈʂkofskʲɪj; – 9 January 1921) was a Russian biologist and botanist, active mainly around Kazan, whose research on lichens led him to propose the theory of symbiogenesis – that larger, more complex cells (of eukaryotes) evolved from the symbiotic relationship between less complex ones. He presented this theory in 1910, in his work, ''The Theory of Two Plasms as the Basis of Symbiogenesis, a New Study of the Origins of Organisms'', although the fundamentals of the idea had already appeared in his earlier 1905 work, ''The nature and origins of chromatophores in the plant kingdom''. Biography Early life Konstantin was born in Saint Petersburg, one of six sons and three daughters in the Mereschkowski family. His father Sergey Ivanovich served as a senior official in several Russian local governors' cabinets (including that of I.D. Talyzin in Oren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Petersburg
Saint Petersburg, formerly known as Petrograd and later Leningrad, is the List of cities and towns in Russia by population, second-largest city in Russia after Moscow. It is situated on the Neva, River Neva, at the head of the Gulf of Finland on the Baltic Sea. The city had a population of 5,601,911 residents as of 2021, with more than 6.4 million people living in the Saint Petersburg metropolitan area, metropolitan area. Saint Petersburg is the List of European cities by population within city limits, fourth-most populous city in Europe, the List of cities and towns around the Baltic Sea, most populous city on the Baltic Sea, and the world's List of northernmost items#Cities and settlements, northernmost city of more than 1 million residents. As the former capital of the Russian Empire, and a Ports of the Baltic Sea, historically strategic port, it is governed as a Federal cities of Russia, federal city. The city was founded by Tsar Peter the Great on 27 May 1703 on the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Complexity
Complexity characterizes the behavior of a system or model whose components interact in multiple ways and follow local rules, leading to non-linearity, randomness, collective dynamics, hierarchy, and emergence. The term is generally used to characterize something with many parts where those parts interact with each other in multiple ways, culminating in a higher order of emergence greater than the sum of its parts. The study of these complex linkages at various scales is the main goal of complex systems theory. The intuitive criterion of complexity can be formulated as follows: a system would be more complex if more parts could be distinguished, and if more connections between them existed. , a number of approaches to characterizing complexity have been used in science; Zayed ''et al.'' reflect many of these. Neil Johnson states that "even among scientists, there is no unique definition of complexity – and the scientific notion has traditionally been conveyed using partic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Coloration
Animal coloration is the general appearance of an animal resulting from the reflection or emission of light from its surfaces. Some animals are brightly coloured, while others are hard to see. In some species, such as the peafowl, the male has strong patterns, conspicuous colours and is iridescent, while the female is far less visible. There are several separate reasons why animals have evolved colours. Camouflage enables an animal to remain hidden from view. Animals use colour to advertising in biology, advertise services such as cleaning symbiosis, cleaning to animals of other species; to signalling theory, signal their Sexual selection, sexual status to other members of the same species; and in mimicry, taking advantage of the aposematism, warning coloration of another species. Some animals use flashes of colour to divert attacks by deimatic behaviour, startling predators. Zebras may possibly use motion dazzle, confusing a predator's attack by moving a bold pattern rapidly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthropology
Anthropology is the scientific study of humanity, concerned with human behavior, human biology, cultures, society, societies, and linguistics, in both the present and past, including archaic humans. Social anthropology studies patterns of behaviour, while cultural anthropology studies cultural meaning, including norms and values. The term sociocultural anthropology is commonly used today. Linguistic anthropology studies how language influences social life. Biological anthropology, Biological (or physical) anthropology studies the biology and evolution of Human evolution, humans and their close primate relatives. Archaeology, often referred to as the "anthropology of the past," explores human activity by examining physical remains. In North America and Asia, it is generally regarded as a branch of anthropology, whereas in Europe, it is considered either an independent discipline or classified under related fields like history and palaeontology. Etymology The abstract noun ''wikt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Zoology
Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (other) * Marine art * Marine biology * Marine current power * Marine debris * Marine energy * Marine habitats * Marine life * Marine pollution Military * Marines, a naval-based infantry force ** United States Marine Corps ** Royal Marines of the UK ** Brazilian Marine Corps ** Spanish Marine Infantry ** Fusiliers marins (France) ** Indonesian Marine Corps ** Republic of China Marine Corps ** Republic of Korea Marine Corps ** Royal Thai Marine Corps *"Marine" also means "navy" in several languages: ** Austro-Hungarian Navy () ** Belgian Navy (, , ) ** Royal Canadian Navy () *** Provincial Marine (1796–1910), a predecessor to the Royal Canadian Navy ** Navy of the Democratic Republic of the Congo () ** Royal Danish Navy () ** Finnish Navy (, ) ** French Navy () ** Gabonese Navy () ** German Navy () ** Royal Moroccan Navy () ** Royal Netherlands Na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Sea
The White Sea (; Karelian language, Karelian and ; ) is a southern inlet of the Barents Sea located on the northwest coast of Russia. It is surrounded by Karelia to the west, the Kola Peninsula to the north, and the Kanin Peninsula to the northeast. The whole of the White Sea is under Russian sovereignty and considered to be part of the internal waters of Russia.A. D. Dobrovolskyi and B. S. Zalogi"Seas of USSR. White Sea" Moscow University (1982) (in Russian) Administratively, it is divided between the Arkhangelsk Oblast, Arkhangelsk and Murmansk Oblast, Murmansk oblasts and the Republic of Karelia. The Port of Arkhangelsk, major port of Arkhangelsk is located on the White Sea. For much of Russia's history this was Russia's main centre of international maritime trade, conducted by the Pomors ("seaside settlers") from Kholmogory, Arkhangelsk Oblast, Kholmogory. In the modern era it became an important Soviet Union, Soviet naval and submarine base. The White Sea–Baltic Canal co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molodaya Gvardiya (magazine)
''Molodaya Gvardiya'' (, "Young Guard") is a monthly Russian magazine focusing on literature and politics, founded in Moscow in May 1922 as an organ of the Central Committee of the Komsomol. It had an immediate success with Alexander Tarasov-Rodionov's short novel ''Shokolad'' (Chocolate), a controversial work in which the author "faced without blinking the truth about 'revolutionary justice' as meted out by the organs of state security, and with knowledge gained at first hand he revealed the methods used by the Cheka to maintain the Bolsheviks in power"; the "chocolate" of the title stands for luxuries enjoyed "in the midst of proletarian starvation." It was not published from 1942 to 1947 due to the hardships of the second world war. Between 1947 and 1956 it was published as a periodical anthology for young writers. It became increasingly conservative and nationalist over the years, publishing strongly nativist and sometimes xenophobic material during the Khrushchev Thaw (altho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dmitry Merezhkovsky
Dmitry Sergeyevich Merezhkovsky ( rus, Дми́трий Серге́евич Мережко́вский, p=ˈdmʲitrʲɪj sʲɪrˈɡʲejɪvʲɪtɕ mʲɪrʲɪˈʂkofskʲɪj; – December 9, 1941) was a Russian novelist, poet, religious thinker, and literary critic. A seminal figure of the Silver Age of Russian Poetry, regarded as a co-founder of the Symbolist movement, Merezhkovsky – with his wife, the poet Zinaida Gippius – was twice forced into political exile. During his second exile (1918–1941) he continued publishing successful novels and gained recognition as a critic of the Soviet Union. Known both as a self-styled religious prophet with his own slant on apocalyptic Christianity, and as the author of philosophical historical novels which combined fervent idealism with literary innovation, Merezhkovsky became a nine-time nominee for the Nobel Prize in Literature, which he came closest to winning in 1933. However, due to contested claims that he expressed regar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander II Of Russia
Alexander II ( rus, Алекса́ндр II Никола́евич, Aleksándr II Nikoláyevich, p=ɐlʲɪˈksandr ftɐˈroj nʲɪkɐˈlajɪvʲɪtɕ; 29 April 181813 March 1881) was Emperor of Russia, Congress Poland, King of Poland and Grand Duke of Finland from 2 March 1855 until Assassination of Alexander II of Russia, his assassination in 1881. Alexander's most significant reform as emperor was the emancipation reform of 1861, emancipation of Serfdom in Russia, Russia's serfs in 1861, for which he is known as Alexander the Liberator ( rus, Алекса́ндр Освободи́тель, r=Aleksándr Osvobodítel, p=ɐlʲɪˈksandr ɐsvəbɐˈdʲitʲɪlʲ). The tsar was responsible for other Liberalism, liberal reforms, including reorganizing the judicial system, setting up elected local judges, abolishing corporal punishment, promoting local self-government through the ''zemstvo'' system, imposing universal military service, ending some privileges of the nobility, and promot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orenburg
Orenburg (, ), formerly known as Chkalov (1938–1957), is the administrative center of Orenburg Oblast, Russia. It lies in Eastern Europe, along the banks of the Ural River, being approximately southeast of Moscow. Orenburg is close to the border with Kazakhstan. It was the capital of the Kazakh ASSR from 1920 to 1925. Etymology Several historians have tried to explain the origins of the city's name. It was traditionally accepted that the word "orenburg" means a fortress on the River Or. In all probability, the word combination "orenburg" was proposed by , the founder of the city. In 1734, in accordance with his project, a package of governmental documents was worked out. This was the starting point for Orenburg as a fortress city near the meeting of the Or and Ural rivers. On 7 June 1734, "A Privilege for Orenburg" (tsar's edict) was ordered by Empress Anna Ioannovna. While the construction site of the main fortress changed many times (down the River Ural), the name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symbiotic
Symbiosis (Ancient Greek : living with, companionship < : together; and ''bíōsis'': living) is any type of a close and long-term biological interaction, between two s of different . The two organisms, termed symbionts, can for example be in mutualistic, commensalistic, or parasitic relationships. In 1879, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
