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Chernobyl Nuclear Disaster
On 26 April 1986, the no. 4 reactor of the Chernobyl Nuclear Power Plant, located near Pripyat, Ukrainian SSR, Soviet Union (now Ukraine), exploded. With dozens of direct casualties, it is one of only two nuclear energy accidents rated at the maximum severity on the International Nuclear Event Scale, the other being the 2011 Fukushima nuclear accident. The response involved more than 500,000 personnel and cost an estimated 18billion rubles (about $84.5billion USD in 2025). It remains the worst nuclear disaster and the most expensive disaster in history, with an estimated cost of US$700 billion. The disaster occurred while running a test to simulate cooling the reactor during an accident in blackout conditions. The operators carried out the test despite an accidental drop in reactor power, and due to a design issue, attempting to shut down the reactor in those conditions resulted in a dramatic power surge. The reactor components ruptured and lost coolants, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moscow Summer Time
Moscow Time (MSK; ) is the time zone for the city of Moscow, Russia, and most of western Russia, including Saint Petersburg. It is the second-westernmost of the eleven time in Russia, time zones of Russia, after the non-continguous Kaliningrad enclave. It has been set to UTC+03:00 without Daylight saving time, DST since 26 October 2014; before that date it had been set to UTC+04:00 Daylight_saving_time#Permanent_daylight_saving_time, year-round on 27 March 2011. Moscow Time is used to schedule Rail transport in Russia, trains, ships, etc. throughout Russia, but air transport in Russia is scheduled using local time. Time in Russia is often announced throughout the country's other timezones on radio stations as Moscow Time, which is also registered in telegrams, etc. Descriptions of time zones in Russia are often based on Moscow Time rather than UTC; for example, Yakutsk (UTC+09:00) is said to be MSK+6 in Russia. History Until the October Revolution, the official time in Mosco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Ruble
The ruble or rouble (; rus, рубль, r=rubl', p=rublʲ) was the currency of the Soviet Union. It was introduced in 1922 and replaced the Russian ruble#Imperial ruble (1704-1922), Imperial Russian ruble. One ruble was divided into 100 kopecks ( – ''kopeyka'', ''kopeyki''). Soviet banknotes and coins were produced by the Federal State Unitary Enterprise (or Goznak) in Moscow and Leningrad. In addition to regular cash rubles, other types of rubles were also issued, such as several forms of ''convertible ruble'', transferable ruble, clearing ruble, Vneshtorgbank cheque, etc.; also, several forms of virtual rubles (called "cashless ruble", ) were used for inter-enterprise accounting and international settlement in the Comecon zone. In 1991, after the dissolution of the Soviet Union, the Soviet ruble was replaced by the first Russian ruble by 1993, and continued to be used in eleven post-Soviet states, forming a "ruble zone" until 1993. Etymology The word ''ruble'' is derived ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decay Heat Illustration2
Decay may refer to: Science and technology * Bit decay, in computing * Decay time (fall time), in electronics * Distance decay, in geography * Software decay, in computing Biology * Decomposition of organic matter * Mitochondrial decay, in genetics * Tooth decay (dental caries), in dentistry Physics * Optical decay, in quantum physics * Orbital decay, the process of prolonged reduction in the height of a satellite's orbit * Particle decay * Radioactive decay * False vacuum decay Mathematics * Exponential decay Psychology and sociology * Decay theory, in psychology and memory * Social decay (decadence), in sociology * Urban decay, in sociology Entertainment * Network decay (channel drift), in television programming * Decay (DC Comics), a comic book character * '' Half-Life: Decay'', a 2001 video game add-on * Deekay, a Danish production team * Decay (professional wrestling), a professional wrestling stable in TNA Wrestling Film * ''Decay'' (2012 film), a 2012 zombi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chernobyl New Safe Confinement
The New Safe Confinement (NSC or New Shelter; ) is a structure put in place in 2016 to confine the remains of the number 4 reactor unit at the Chernobyl Nuclear Power Plant, in Ukraine, which was destroyed during the Chernobyl disaster in 1986. The structure also encloses the temporary Shelter Structure (sarcophagus) that was built around the reactor immediately after the disaster. The New Safe Confinement is designed to prevent the release of radioactive contaminants, protect the reactor from external influence, facilitate the disassembly and decommissioning of the reactor, and prevent water intrusion. The New Safe Confinement is a megaproject that is part of the Shelter Implementation Plan and supported by the Chernobyl Shelter Fund. It was designed with the primary goal of confining the radioactive remains of reactor 4 for 100 years. It also aims to allow for a partial demolition of the original sarcophagus, which was hastily constructed by Chernobyl liquidators after a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiological Protection
Radiation protection, also known as radiological protection, is defined by the International Atomic Energy Agency (IAEA) as "The protection of people from harmful effects of exposure to ionizing radiation, and the means for achieving this". Exposure can be from a source of radiation external to the human body or due to internal irradiation caused by the ingestion of radioactive contamination. Ionizing radiation is widely used in industry and medicine, and can present a significant health hazard by causing microscopic damage to living tissue. There are two main categories of ionizing radiation health effects. At high exposures, it can cause "tissue" effects, also called "deterministic" effects due to the certainty of them happening, conventionally indicated by the unit gray and resulting in acute radiation syndrome. For low level exposures there can be statistically elevated risks of radiation-induced cancer, called "stochastic effects" due to the uncertainty of them happening, co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radioactive Contamination
Radioactive contamination, also called radiological pollution, is the deposition of, or presence of Radioactive decay, radioactive substances on surfaces or within solids, liquids, or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency (IAEA) definition). Such contamination presents a hazard because the radioactive decay of the contaminants produces ionizing radiation (namely alpha particle, alpha, beta particle, beta, gamma rays and free neutrons). The degree of hazard is determined by the concentration of the contaminants, the energy of the radiation being emitted, the type of radiation, and the proximity of the contamination to organs of the body. It is important to be clear that the contamination gives rise to the radiation hazard, and the terms "radiation" and "contamination" are not interchangeable. The sources of radioactive pollution can be classified into two groups: natural and man-made. Follo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chernobyl Nuclear Power Plant Sarcophagus
The Chernobyl Nuclear Power Plant sarcophagus or Shelter Structure (, ) is a massive steel and concrete structure covering the nuclear reactor number 4 building of the Chernobyl Nuclear Power Plant. Built in the aftermath of the 1986 Chernobyl disaster, the sarcophagus was designed to limit radioactive contamination of the environment by encasing the most dangerous area and protecting it from climate exposure. The sarcophagus locked in an estimated of radioactive lava-like corium, of highly contaminated dust and of uranium and plutonium. Structurally, the sarcophagus is largely supported by the damaged reactor building. By 1996, the structure had deteriorated to the point where numerous stabilization measures were required. Internal radiation levels were estimated to be as high as per hour in certain areas (normal background radiation in cities is usually around per hour, and a lethal dose is over 5 hours).. By 2017, the sarcophagus was surrounded by the New Safe Confi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slavutych
Slavutych (, ) is a city and municipality in northern Ukraine, purpose-built for the evacuated personnel of the Chernobyl Nuclear Power Plant after the 1986 disaster that occurred near the city of Pripyat. Geographically located within Chernihiv Raion, Chernihiv Oblast, Slavutych is administratively subordinated to the Kyiv Oblast and is part of Vyshhorod Raion. It is coterminous with Slavutych urban hromada, one of the hromadas of Ukraine. In 2021 the city had a population of In 2024, about 20,000 people live there. Geography File:Slawutytsch (Ukraine).png, Transportation connection between Slavutych and Pripyat (map is in German) File:Chernigovskiy rayon 2020.svg, Chernihiv Raion within Chernihiv Oblast. The non-shaded orange dot at the western edge of the raion indicates the city of Slavutych. Slavutych is situated on the left bank of the Dnieper River, 40 kilometers (25 miles) from Chernihiv, 45 kilometers (30 miles) from the city of Pripyat (city), Pripyat, 50 kilomet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thyroid Cancer
Thyroid cancer is cancer that develops from the tissues of the thyroid gland. It is a disease in which cells grow abnormally and have the potential to spread to other parts of the body. Symptoms can include swelling or a lump in the neck, difficulty swallowing or voice changes including hoarseness, or a feeling of something being in the throat due to mass effect from the tumor. However, most cases are asymptomatic. Cancer can also occur in the thyroid after spread from other locations, in which case it is not classified as thyroid cancer. Risk factors include radiation exposure at a young age, having an enlarged thyroid, family history and obesity Obesity is a medical condition, considered by multiple organizations to be a disease, in which excess Adipose tissue, body fat has accumulated to such an extent that it can potentially have negative effects on health. People are classifi .... The four main types are papillary thyroid cancer, follicular thyroid canc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer Science+Business Media
Springer Science+Business Media, commonly known as Springer, is a German multinational publishing company of books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing. Originally founded in 1842 in Berlin, it expanded internationally in the 1960s, and through mergers in the 1990s and a sale to venture capitalists it fused with Wolters Kluwer and eventually became part of Springer Nature in 2015. Springer has major offices in Berlin, Heidelberg, Dordrecht, and New York City. History Julius Springer founded Springer-Verlag in Berlin in 1842 and his son Ferdinand Springer grew it from a small firm of 4 employees into Germany's then second-largest academic publisher with 65 staff in 1872.Chronology ". Springer Science+Business Media. In 1964, Springer expanded its business internationally, op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chernobyl Exclusion Zone
The Chernobyl Nuclear Power Plant Zone of Alienation, also called the 30-Kilometre Zone or simply The Zone, was established shortly after the 1986 Chernobyl disaster in the Ukrainian SSR of the Soviet Union. Initially, Soviet authorities declared an exclusion zone spanning a radius around the Chernobyl Nuclear Power Plant, designating the area for evacuations and placing it under military control. Its borders have since been altered to cover a larger area of Ukraine: it includes the northernmost part of Vyshhorod Raion in Kyiv Oblast, and also adjoins the Polesie State Radioecological Reserve in neighbouring Belarus. The Chernobyl exclusion zone is managed by an agency of the State Emergency Service of Ukraine, while the power plant and its sarcophagus and the New Safe Confinement are administered separately. The current area of approximately in Ukraine is where radioactive contamination is the highest, and public access and habitation are accordingly restricted. Other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east. Europe shares the landmass of Eurasia with Asia, and of Afro-Eurasia with both Africa and Asia. Europe is commonly considered to be Boundaries between the continents#Asia and Europe, separated from Asia by the Drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea, and the waterway of the Bosporus, Bosporus Strait. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and Europe ... is formed by the Ural Mountains, Ural River, Caspian Sea, Caucasus Mountains, and the Black Sea with its outlets, the Bosporus and Dardanelles." Europe covers approx. , or 2% of Earth#Surface, Earth's surface (6.8% of Earth's land area), making it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
