| 单词 | osmium |
| 例句 | Catalysts incorporating osmium exhibited high activity due to the expanded electrochemical active surface area achieved through nanostructure formation. New approach to water electrolysis for green hydrogen 2023-11-03T04:00:00Z Two geoscientists advanced the theory in 2013, partially because the levels of iridium and osmium around the impact site were lower than should appear in an asteroid and more apt for a comet impact. Why some scientists think a comet, not an asteroid, caused the dinosaurs to go extinct 2021-02-17T05:00:00Z It is a shiny white metal in the same group as platinum, along with ruthenium, rhodium, osmium, and iridium. More precious than gold: Why palladium is soaring 2020-01-19T05:00:00Z Certain minerals such as gold, platinum, silver, tungsten, iridium, osmium, palladium, rhenium, rhodium and ruthenium might be mined and transported to Earth for on-planet use. The Dawn of the Space Mining Age 2015-11-24T05:00:00Z Could I interest you in an oboe made of osmium?” In a new light : Nature : Nature Publishing Group 2015-08-18T04:00:00Z The results showed a moderate increase in activity, but the dissolution of osmium had a detrimental effect, significantly compromising the structural integrity of iridium and ruthenium. New approach to water electrolysis for green hydrogen 2023-11-03T04:00:00Z Police allege that Phillips possessed osmium tetroxide for a dangerous purpose. World Digest: Jan. 23, 2015 2015-01-23T05:00:00Z Police say Christopher B. Phillips, 42, possessed a chemical called osmium tetroxide for a dangerous purpose. World Digest: Jan. 22, 2014 2015-01-22T05:00:00Z The team was able to estimate the total volume of asteroids that hit Earth and the Moon using measurements of the abundance of elements such as gold and osmium in their crusts. Asteroids wreaked havoc on early Earth 2014-07-29T04:00:00Z Why not osmium or chromium, or helium, say - or maybe seaborgium? Why do we value gold? 2013-12-08T00:26:28Z We've been working on other metal carbenes, including metals with similar electronic properties such as iron, which is cheap, and osmium, which is expensive. Q&A: The bond shifter 2013-10-16T17:21:33.257Z Have these been found, alongside of gold, diamonds, platinum, osmium, iridium, or mercury? Narrative of the Circumnavigation of the Globe by the Austrian Frigate Novara, Volume I (Commodore B. Von Wullerstorf-Urbair,) Undertaken by Order of the Imperial Government in the Years 1857, 1858, & 1859, Under the Immediate Auspices of His I. and R. Highness the Archduke Ferdinand Maximilian, Commander-In-Chief of the Austrian Navy. 2012-01-02T03:00:25.873Z The most sensitive constraint involves the beta decay of rhenium into osmium. Inconstant Constants 2011-12-31T05:15:18.567Z The company, whose name is derived from the materials osmium and wolfram traditionally used in light bulbs, employs about 39,000 people globally. Siemens Delays Osram Lighting Unit IPO as Stock Markets Retreat 2011-09-14T17:30:02Z Of the 118 elements we are now down to just eight contenders: platinum, palladium, rhodium, iridium, osmium and ruthenium, along with the old familiars, gold and silver. Why do we value gold? 2013-12-08T00:26:28Z Other materials have been used, such as zirconium, yttrium, and thorium oxides, and osmium and tantalum among the metals, but they have been displaced entirely by the materials mentioned above. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z The company was founded in 1906, and the name Osram was created from the names of the two materials needed at the time to produce filaments: osmium and wolfram. Siemens Said to Weigh IPO for Osram Unit Within Two Months 2011-02-28T13:31:02Z There are several rare metals, such as iridium and osmium, which would likewise be far too valuable to circulate. Readings in Money and Banking Selected and Adapted 2011-02-01T03:00:14.553Z The various improvements in electric illuminants, such as the Nernst oxide lamp, the tantalum and osmium incandescent lamps, and improved forms of arc lamp, enclosed, inverted and flame arcs, are described under Lighting: Electric. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z But in the Rings, all this incalculable wealth of uranium, radium, osmium, and so forth, not to mention millions of tons of useless gold, was uniquely exposed as easily accessible dust. Big Pill A high tension current was there created, of such powerful intensity that it disintegrated the atoms of every element except osmium and indium into their constituent electrons. Astounding Stories, July, 1931 Platinum, iridium, and osmium are obtained with the gold in some of the placer mines, but are never found alone, nor are they ever the main object sought by the miner. Hittel on Gold Mines and Mining The guns were enclosed in a thin sheath of osmium, through which the lethal rays penetrated unchanged; about them, thick shields of lead protected the gunners. Astounding Stories of Super-Science, August 1930 He saw neat stacks of gold ingots, new, freshly smelted; bars of silver-white iridium, of argent platinum, of blue-white osmium. Salvage in Space These are platinum, gold, tungsten, mercury, lead, palladium, silver, bismuth, uranium, vanadium, copper, cadmium, cobalt, arsenic, nickel, iron, molybdenum, tin, zinc, antimony, tellurium, manganese, tatiaum, chromium, columbium, rhodium, iridium, osmium, cerium. The Mines and its Wonders But the osmium and uranium alloyed with it are something else. The Planet Strappers It is beyond his province to determine whether carbon should be replaced by tantalum, osmium or tungsten to get higher efficiency, but he must understand the effects of these lights and prescribe accordingly. Color Value He then fused iridium, the alloy of iridium and osmium, and other refractory substances. Fragments of science, V. 1-2 And right now, sir it’s probably as expensive for them to refine iron as it is for us to handle titanium and beryllium and osmium—which are duck soup for them! The Aliens Some metals, as for instance, osmium, tantalum, thorium, and others, have been used, and others, also, with great success, so that the march of improvements is now going forward with rapid strides. Electricity for Boys It had a mottled, pinkish shine, partly from untarnished lead, osmium, considerable uranium, some iron, nickel, silver, copper. The Planet Strappers Even a chemist can see that that means a lack of heavy metals—no osmium, no uranium, no radium. Valley of Dreams The metals of the other group—iridium, osmium, and platinum—have atomic weights near 200 and densities near 21. An Elementary Study of Chemistry The native alloy of osmium and iridium does not alloy with gold, however, but falls to the bottom of the molten metal. A Text-book of Assaying: For the Use of Those Connected with Mines. Owing to its extreme brittleness, osmium was finely divided and made into a paste of organic material. Artificial Light Its Influence upon Civilization He rode with a long train of bubbs and great sheaves of smelted metal rods—tungsten, osmium, uranium 238. The Planet Strappers The metals platinum, iridium, rhodium, osmium and palladium do not fuse. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The four elements gold, platinum, osmium, and iridium are the heaviest substances known, being about twice as heavy as lead. An Elementary Study of Chemistry The gold may contain an alloy of osmium and iridium; if so, it should be weighed and treated with aqua regia. A Text-book of Assaying: For the Use of Those Connected with Mines. The tantalum filament was quickly followed by osmium and by tungsten in this country. Artificial Light Its Influence upon Civilization Next to osmium, iodium, and platinum, it is the heaviest of metals, being nineteen times heavier than water. The Bay State Monthly — Volume 2, No. 6, March, 1885 The metal osmium, if exposed to the flame of oxidation, fuses and is finally dissipated as osmic acid. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations We have the names in one of the tables arranged in two columns, representing, as you see, two groups—platinum, iridium, and osmium constituting one group; and ruthenium, rhodium, and palladium the other. The Chemical History of a Candle Iridium, osmium, platinum, ruthenium, tantalum, thorium, tungsten, uranium. Scientific American Supplement, No. 799, April 25, 1891 A great variety of methods for coating incandescent lamp filaments with silicon, titanium, chromium, osmium, boron, etc. Edison, His Life and Inventions Valence in degree may extend as high as seven or eight, as in the cases of iodine and osmium respectively. The Gutenberg Webster's Unabridged Dictionary Section T, U, V, and W The ore of osmium and iridium can be decomposed, and the former recognized by its fetid odor. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations In that state of combination, as shewn in the table, the iridium and osmium are found combined in crystals, sometimes to the amount of 0.5 per cent., and sometimes 3 or 4 per cent. The Chemical History of a Candle With the exception of osmium, it is the heaviest substance known, its specific gravity being 22.4. The Gutenberg Webster's Unabridged Dictionary Section I, J, K, and L The difference of the metals themselves, their origin, the causes of their locations, of their co-existence in the same ore—as, for instance, iridium, osmium, palladium, rhodium, and iron with platinum. Literary Remains, Volume 2 Further, the smaller cell takes a colour in carmine, osmium, etc., more strongly than the larger. The Evolution of Man — Volume 1 This metal, strongly ignited in a glass tube with nitrate of potash, is converted to the oxide of osmium, which gives an odor not unlike the chloride of sulphur. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations This substance is always native—it is always in the metallic state; and the metals with which it is found connected, and which are rarely found elsewhere, are palladium, rhodium, iridium, osmium, and ruthenium. The Chemical History of a Candle Iridium occurs in nature associated with osmium, gold, and platinum, in the mines of Russia. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations In South America this metal is found native, associated with platinum and osmium. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations So with iridium and rhodium, and osmium and ruthenium, which are so closely allied that they make pairs, being separated each from its own group. The Chemical History of a Candle |
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