| 单词 | Mendeleev |
| 例句 | Mendeleev grew up in Siberia as the youngest of 14 children. Russian scientist created a chemistry tool with room for discovery 2019-03-05T05:00:00Z In one textbook, Mendeleev aimed to include a table to explain patterns in the elements. Russian scientist created a chemistry tool with room for discovery 2019-03-05T05:00:00Z Mendeleev proposed an ingenious array that highlighted the periodic nature of the properties of elements. College Physics for AP Courses 2015-08-12T00:00:00Z But Mendeleev went one step further than Meyer: He used his table to predict the existence of elements that would have the properties similar to aluminum and silicon, but were yet unknown. Chemistry 2019-02-14T00:00:00Z Mendeleev’s chart, the Periodic Table, is still used today. World History: Patterns of Interaction 2012-01-01T00:00:00Z When Mendeleev first announced the periodic table to the Russian Chemical Society in 1869, it included sixty-three elements. Is science stuck? The "Great Stagnation Debate," explained 2021-11-26T05:00:00Z At the Mendeleev Bar, the bouncers took our temperatures and then handed us face masks. Night on the town, Moscow style: Few masks, but lots of worry about another lockdown 2020-10-14T04:00:00Z Once these elements were discovered and determined to have properties predicted by Mendeleev, his periodic table became universally accepted. College Physics for AP Courses 2015-08-12T00:00:00Z Mendeleev had predicted, and others including Henry Moseley had later confirmed, that there should be elements below Manganese in Group 7. Chemistry 2019-02-14T00:00:00Z As scientists celebrated Dmitri Mendeleev’s enduring array of chemical elements this year, some also wondered whether there might be a better way to organize the stuff of the universe. What We Learned in Science News in 2019 2019-12-21T05:00:00Z Mendeleev took every opportunity to argue, at times heedlessly, that the characteristics of the elements repeat in an orderly and predictable way. The Histories Hidden in the Periodic Table 2019-12-27T05:00:00Z My friends said Mendeleev wasn’t handing its patrons masks the week before. Night on the town, Moscow style: Few masks, but lots of worry about another lockdown 2020-10-14T04:00:00Z The vast bureaucracy that was created meant new opportunities for ambitious intellectuals, including chemist Dmitrii Mendeleev. Discovery is always political 2019-09-23T04:00:00Z The iconic periodic table of elements, devised by the Russian chemist Dmitri Mendeleev, is a two-dimensional array of the chemical elements, ordered by atomic number and arranged 18 across by orbitals. Is It Time to Upend the Periodic Table? 2019-08-27T04:00:00Z Pushing further into the eighth row also could answer questions that scientists have wrestled with since Dmitri Mendeleev's day: How many elements exist? A storied Russian lab is trying to push the periodic table past its limits—and uncover exotic new elements 2019-01-30T05:00:00Z At first, Mendeleev argued that helium could not exist; it had no place on the periodic table. The Histories Hidden in the Periodic Table 2019-12-27T05:00:00Z When Dmitri Mendeleev published the periodic table 150 years ago, only about half as many elements were known as today. Beyond the periodic table 2019-01-29T05:00:00Z The next steps in Mendeleev’s remarkable career are emblematic of the expanded roles of science and technology in the era. Discovery is always political 2019-09-23T04:00:00Z Mendeleev was not the first to try to arrange elements by their increasing order of atomic weight. Can quantum ideas explain chemistry’s greatest icon? 2019-01-29T05:00:00Z At first glance, the system of chemical elements published by Dmitri Mendeleev in 1869 bears little resemblance to the modern periodic table. Anniversary celebrations are due for Mendeleev’s periodic table 2019-01-29T05:00:00Z Many historians date the invention of the periodic table to the publication, a hundred and fifty years ago, of a textbook by the Russian chemist Dmitri I. Mendeleev. The Histories Hidden in the Periodic Table 2019-12-27T05:00:00Z In March, it will be 150 years since the Russian scientist, Dmitri Mendeleev, took all of the known elements and arranged them into a table. Happy birthday, periodic table 2019-01-28T05:00:00Z Central to those efforts was investing heavily in precision metrology; the tsar found eager and skilful natural scientists such as Mendeleev to help7. Discovery is always political 2019-09-23T04:00:00Z The meaning of a chemical element has changed, from Mendeleev’s concept of a stable and untransmutable substance to isotopic species that exist for only milliseconds13. Celebrate the women behind the periodic table 2019-01-27T05:00:00Z Although Mendeleev has the name recognition, he was not the first to try to organize the elements into a meaningful chart with a pattern that repeats on the basis of similar physical or chemical characteristics. Anniversary celebrations are due for Mendeleev’s periodic table 2019-01-29T05:00:00Z Five years later, Mendeleev published his own periodic table, which steadily evolved into the version we use today. The Histories Hidden in the Periodic Table 2019-12-27T05:00:00Z Remarkably enough, three of these elements, subsequently named gallium, germanium and scandium, were discovered within 15 years of Mendeleev’s predictions. Happy Sesquicentennial, Periodic Table! 2019-01-22T05:00:00Z Russian chemist and inventor Dmitri Mendeleev made his famous disclosure on periodicity in 1869. Uni periodic table 'is world's oldest' 2019-01-17T05:00:00Z Scientists classified and predicted elements before and after Dmitri Mendeleev’s 1869 framework. Celebrate the women behind the periodic table 2019-01-27T05:00:00Z Considering that it would be many years before electrons and protons were discovered and the structure of the atom unravelled, Mendeleev’s achievement seems all the more impressive. Anniversary celebrations are due for Mendeleev’s periodic table 2019-01-29T05:00:00Z Like Meyer, Mendeleev had organized his particles into a rough grid, its rows containing elements with similar properties. The Histories Hidden in the Periodic Table 2019-12-27T05:00:00Z The continuing value of this marvelous scientific icon is a good reason for all of us to raise a glass of vodka in honor of the man who is rightly considered its discoverer: Dmitri Mendeleev. Happy Sesquicentennial, Periodic Table! 2019-01-22T05:00:00Z Dmitri Mendeleev, creator of the periodic table of elements, and Lise Meitner, who discovered nuclear fission, should have won Nobels but did not. Why Nobel prizes fail 21st-century science 2018-09-30T04:00:00Z Nearly 150 years after Dmitri Mendeleev dreamed of this organizational structure, the seventh row of the table was officially complete. The battle behind the periodic table’s latest additions 2018-06-12T04:00:00Z Scerri spotlights seven 'unknowns' who, pivoting around the work of Niels Bohr and Dmitri Mendeleev, helped to unravel atomic structure. Books in brief : Nature : Nature Research 2016-12-20T05:00:00Z Mendeleev’s predictions were wrong as often as they were right. The Histories Hidden in the Periodic Table 2019-12-27T05:00:00Z The first true iteration of the table was produced in 1869 by the Russian chemist Dmitri Mendeleev. Chemistry: Four elements added to periodic table - BBC News 2016-01-04T05:00:00Z The tale of its discovery is something of a shaggy dog story, beginning with the father of the periodic table, the 19th Century Russian polymath Dmitri Mendeleev. The element that can make bones glow - BBC News 2015-05-29T04:00:00Z He studied at the Mendeleev Institute of Chemistry and Technology, where, like nearly everyone else, he joined the Komsomol, the Communist Youth League. The Man to Take on Putin 2015-01-05T05:00:00Z At the university, Pavlov’s freshman class in inorganic chemistry was taught by Dmitri Mendeleev, who, a year earlier, had created the periodic table of the elements as a teaching tool. How Everyone Gets Pavlov Wrong 2014-11-17T05:00:00Z Mendeleev accurately predicted the existence of then-undiscovered elements, such as gallium and germanium, and foretold their interactions with other elements. The Histories Hidden in the Periodic Table 2019-12-27T05:00:00Z And while much of Russia remained mired in medieval agrarianism, in Petersburg, at the Empire’s edge, Mendeleev discovered the periodic table and Tchaikovsky composed The Nutcracker. In St. Petersburg, the Ghosts of Petrograd This later turned out to be element number 75, rhenium - another of the gaps in Mendeleev's table. The element that can make bones glow - BBC News 2015-05-29T04:00:00Z He was raised in Moscow, earned a degree in chemical engineering from the Moscow D. Mendeleev Institute of Chemical Technology in 1989, and was working on pesticides in his mid-20s. For Sochi Games, Russians Trade Dour for Dazzling 2014-02-08T12:35:38Z And there were also nods to Mendeleev, who codified the Periodic Table of Elements, and Igor Sikorsky, the inventor and aviator. Russia Opens Sochi Games With Pageantry and Pride 2014-02-07T20:16:58Z Threat of the boycott was powerful enough to get SPI's chief executive officer Val Mendeleev to issue an open letter last Thursday. The Latest Twist in the Long, Sordid Tale of Stolichnaya Vodka 2013-07-30T18:15:11Z The gay community “is one of the active consumers of Stoli,” Mendeleev says. The Gay Boycott Against Russian Vodka: Stoli's CEO Speaks Out 2013-07-31T13:55:41Z Mr Mendeleev stresses that his company's "corporate values stand for transparency, fairness, equality and diversity". Gay activists shun Russian vodka 2013-07-30T16:02:45Z When the management of the park decided to add amusement rides, Kusnirovich and several fellow Mendeleev Institute graduates were given the job of finding and helping import the equipment. For Sochi Games, Russians Trade Dour for Dazzling 2014-02-08T12:35:38Z Mendeleev also pointed to Stoli’s support of recent gay pride parades from South Africa to Austria. It’s a Russian Vodka Boycott 2013-07-30T08:45:00Z When Dmitri Mendeleev—also Russian—and others created the periodic table in the 1860s, it was the first grand scheme to organize all the elements known to science at the time. Cracks in the Periodic Table (preview) 2013-06-17T11:45:00.143Z All that began to change when the predictions made by the last of the six discoverers, Russian chemist Dmitri Mendeleev, began to materialize. The Quest to Put the Elements in Their Places 2013-01-10T18:15:00.280Z The third revolution was the conception of the periodic table by Mendeleev, although this was more of a classification akin to the classification of elementary particles by Murray Gell-Mann and others. Chemistry and Biology: Kuhnian or Galisonian? 2012-12-20T13:15:05.163Z Because so much of science is about the practice of slapping names on things – think of Linneaus, of Mendeleev, of Luke Howard. The Name of the Wind 2012-10-29T18:15:03.257Z Lets say you were going to explain Mendeleev’s table to me. Marie Curie, Theater, and Science Communication: An Interview with Alan Alda 2011-12-01T16:45:00.263Z Mendeleev left several spaces blank in his table, and he made the bold guess that someday new elements would be discovered that would fill those blanks. Cracks in the Periodic Table (preview) 2013-06-17T11:45:00.143Z Kremers thus broke new ground by comparing elements in two directions, a feature that later proved to be an essential aspect of Mendeleev’s system. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z Periodic Properties The crucial characteristic of Mendeleev’s system was that it illustrated a periodicity, or repetition, in the properties of the elements at certain regular intervals. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z Elements that lined up vertically on the surface of the cylinder tended to have similar properties, so this arrangement succeeded in capturing some of the patterns that would later become central to Mendeleev’s system. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z But the table did not appear in print until 1870 because of a publisher’s delay—a factor that contributed to an acrimonious dispute for priority that ensued between Lothar Meyer and Mendeleev. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z Around the same time, Mendeleev assembled his own periodic table while he, too, was writing a textbook of chemistry. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z It included 63 known elements arranged according to increasing atomic weight; Mendeleev also left spaces for as yet undiscovered elements for which he predicted atomic weights. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z Unlike his predecessors, Mendeleev had sufficient confidence in his periodic table to use it to predict several new elements and the properties of their compounds. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z Although the predictive aspect of Mendeleev’s table was a major advance, it seems to have been overemphasized by historians, who have generally suggested that Mendeleev’s table was accepted especially because of this feature. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z Instead Mendeleev’s ability to accommodate the already known elements may have contributed as much to the acceptance of the periodic system as did his striking predictions. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z These elements had not been predicted by Mendeleev or anyone else, and only after six years of intense effort could chemists and physicists successfully incorporate the noble gases into the table. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z Prior to Mendeleev’s discovery, however, other scientists had been actively developing some kind of organizing system to describe the elements. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z As a result, quantum mechanics can only reproduce Mendeleev’s original discovery by the use of mathematical approximations—it cannot predict the periodic system. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z |
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