| 单词 | hafnium |
| 例句 | Other elements are less familiar—hafnium, erbium, dyprosium and praseodymium, say, which we do not much bump into in everyday life. Cosmos 1980-01-01T00:00:00Z The researchers layered platinum, hafnium oxide and zinc oxide and added the stacked materials on top of the original magnetoelectric film. Magnetoelectric material can reconnect severed nerves 2023-10-10T04:00:00Z Once they find a GNR, they use the electron beam in the STM to trigger metal deposition from hafnium diboride precursor molecules to create the wires. Making contact: Researchers wire up individual graphene nanoribbons 2023-09-20T04:00:00Z Control rods are made of boron, cadmium, hafnium, or other elements that are able to absorb neutrons. Chemistry 2019-02-14T00:00:00Z The researchers focused on hafnium, a trace element found in the mineral zircon, a component of sand. The Romans Called it ‘Alexandrian Glass.’ Where Was It Really From? 2020-07-31T04:00:00Z Woodhead and colleagues present a compilation of newly acquired and previously published neodymium and hafnium isotopic data, measured on archetypal kimberlites. Enigmatic origin of diamond-bearing rocks revealed 2019-09-24T04:00:00Z One notable example was the discovery of three particularly rare elements found — hafnium, uranium and tungsten. Shocking Moon discovery: Earth's satellite 100M years older than previously thought, study says 2019-08-01T04:00:00Z The hafnium oxynitride passivates the silicon surface, but the first few injected electrons and holes are found to initially fill imperfections at the silicon surface before moving into the solar cell. An exciting boost for solar cells 2019-07-02T04:00:00Z That means that future scientists won’t be able to date the Martian rocks using a radioactive decay system that relies on tungsten and hafnium; they will have to choose from several other alternatives. The $2.4-billion plan to steal a rock from Mars 2017-01-17T05:00:00Z They measured the concentration of hafnium and the ratio of two hafnium isotopes in the sherds. The Romans Called it ‘Alexandrian Glass.’ Where Was It Really From? 2020-07-31T04:00:00Z Rhenium, zirconium, thallium, hafnium and lutetium are hardly household names. For Sale: Metals you've never heard of - BBC News 2016-09-27T04:00:00Z The facility just outside Albany remains a major refiner of zirconium, used in fuel assemblies for nuclear reactors, as well as other exotic metals such as hafnium, niobium, tantalum and vanadium. Man waiting for late father’s Wah Chang compensation 2016-08-08T04:00:00Z The Millersburg plant also produces a number of other specialty metals, including hafnium and niobium, for a variety of applications in the aerospace and medical industries, among others. Depleted uranium at Wah Chang led to decades of health woes 2016-06-21T04:00:00Z Such demands necessitate the use of alloys of exotic metals such as rhenium, hafnium, nickel and titanium to provide the performance, efficiency and weight savings required for today's advanced aircraft engines. Circular economy: Getting the circulation going : Nature : Nature Publishing Group 2016-03-22T04:00:00Z But it’s still a mystery why glasses from Egypt and the Levant exhibit different ratios of hafnium isotopes. The Romans Called it ‘Alexandrian Glass.’ Where Was It Really From? 2020-07-31T04:00:00Z It consists of four layers of silicon dioxide interspersed with three of hafnium dioxide. A cool idea 2014-11-27T05:00:00Z New materials have been introduced - including the element hafnium - and new more complicated layered structures. The next silicon revolution? 2014-08-01T04:00:00Z The various claims for its discovery reveal many of the nationalistic traits that we have seen in the case of other elements, most notably the controversy surrounding the discovery of hafnium, element 72. A Tale of 7 Elements: Element 85 Astatine [Excerpt] 2013-07-05T14:15:00.623Z I wanted to ship some hafnium powder to Russia to get it processed. The Liberator Plastic Gun And The Export Regulations Take Down Of It 2013-05-10T13:51:42Z The team used standard techniques to etch a pattern of channels in hafnium deposited on silicon. Huge boost for nanotubes on chips 2012-10-29T09:31:21Z One potential solution to this leaking problem is to replace silicon dioxide with materials that have a higher insulating value, or "dielectric constant," such as hafnium dioxide or aluminum oxide. New 3D Transistors May Lead to Lighter Laptops 2011-12-28T15:37:00Z But martian meteorites are bits of martian crust, a rock derived from the mantle by melting, which alters the ratio of hafnium to tungsten. Why Mars Is a Planetary Runt 2011-05-25T22:45:04Z The first they dealt with by coating the top of the device with oxides of hafnium, molybdenum and titanium, in layers about 100 nanometres thick. Solar power: The third way 2011-05-12T11:01:28Z Nuclear reactors utilize control rods made from elements such as cadmium, boron or hafnium, all of which are efficient neutron absorbers. What Happens During a Nuclear Meltdown? 2011-03-15T14:15:00.257Z The second was a solution that binds to the first chemical and to the element hafnium, but not to silicon. Huge boost for nanotubes on chips 2012-10-29T09:31:21Z By determining the hafnium isotopic composition and the lutetium/hafnium ratio we can determine the time at which the garnets in the rock formed. Scientist at Work: On Last Field Day, a South Pole Detour 2011-01-12T17:17:10Z To bring us full circle, we will next return to Jeff’s lab to measure the hafnium isotope compositions in these zircons. Scientist at Work: Rocks, Zircon Zapping and a Big Shrimp 2011-01-07T21:02:35Z Other evidence from hafnium and tungsten isotopes indicates that the core formed between 30 to 100 million years after the origin of the solar system. Silver Tells a Story of Early Earth: Water Here Since Planet's Very Early Days 2010-05-17T21:44:00Z "If you stay within a half mile of the hafnium pile, the detection man will not be able to pick up your radiation and maybe you will have a second chance." The Stutterer Garnets incorporate the element lutetium when they grow and largely exclude hafnium. Scientist at Work: On Last Field Day, a South Pole Detour 2011-01-12T17:17:10Z Clean lab at Washington State University with chromatographic columns for separating hafnium from dissolved garnet samples. Scientist at Work: On Last Field Day, a South Pole Detour 2011-01-12T17:17:10Z Together, the U-Pb age, oxygen and hafnium isotope data will help us understand when and where within the earth a zircon formed, and what its complete history was preceding its latest stage of formation. Scientist at Work: Rocks, Zircon Zapping and a Big Shrimp 2011-01-07T21:02:35Z In its very center, buried in a mine of graphite were the tubes of hafnium, from whose nuclear explosions flowed a river of electricity without the need of human thought or direction. The Stutterer He'll tear the pile apart and let the hafnium go off. The Stutterer |
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