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rubidium
rubidium-81
rubidium-81 (roo-bid-iŭm) n. an artificial radioactive isotope, with a half-life of about four hours, that decays into krypton-81m, emitting radiations. It is used in ventilation-perfusion scanning.
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Way Found to Resolve Aging Drift of Rubidium Atomic Timers
Newspaper article from: Xinhua English Newswire; 7/2/1996; 542 words
; ...found the causes of the ageing drift of rubidium atomic timers, after 20 years of studies...Beijing University started to develop rubidium atomic timers in 1973. They found that the ageing drift of rubidium atomic timers is caused by collision...
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CSR boosts BlueCore5-Multimedia with the addition of Rubidium's Talking Caller ID TTS.
M2 Presswire; 6/29/2007; 700+ words
; ...Multimedia with the addition of Rubidium's Talking Caller ID TTS(C)1994...Bluetooth platform is now available with Rubidium's Talking Caller ID text-to-speech (TTS) application. Using Rubidium's embedded TTS technology, Bluetooth...
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Rubidium marking of Aphidius rhopalosiphi (Hymenoptera: Braconidae) on Sitobion avenae (Hemiptera: Aphididae) reared on a diet supplemented with RbCl
Magazine article from: European Journal of Entomology; 1/1/2005; ; 700+ words
; Key words. Braconidae, Aphididae, rubidium, markers, diet, RbCl, Aphidius rhopalosiphi...to insects as small as parasitoids. Rubidium is the most common element used for marking...incorporated diet. Our results show that the rubidium in an artificial diet is transferred...
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CSR Boosts BlueCore5-Multimedia with the Addition of Rubidium's Talking Caller ID TTS.
Business Wire; 6/29/2007; 700+ words
; ...Bluetooth platform is now available with Rubidium's Talking Caller ID text-to-speech (TTS) application. Using Rubidium's embedded TTS technology, Bluetooth...s eXtension Partner Programme, Rubidium's Talking Caller ID TTS uses phonetic...
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Datum Introduces a Portable Ultra Stable VXIbus Rubidium Frequency Reference.
Business Wire; 8/24/1998; 700+ words
; ...Datum Inc. Monday announced the VXIbus Rubidium Frequency Reference module. This double...RF systems. The module's internal rubidium oscillator is automatically calibrated...oscillator that is phase locked to the master rubidium oscillator, and distributed as 10 MHz...
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Rubidium atomic frequency standards.
Magazine article from: Microwave Journal; 7/1/1993; 700+ words
; This new, low cost rubidium standard, model FE-5650A, brings...1 shows a schematic diagram of the rubidium frequency standard. Power consumption...degrees] to + 50[degrees]C. The rubidium frequency standard uses the property...
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Symmetricom Announces New 8040C Rubidium Frequency Standard.
Business Wire; 12/7/2004; 700+ words
; SAN JOSE, Calif. -- New rubidium frequency standard combines unmatched customization...atomic clocks, today introduced the 8040C Rubidium Frequency Standard, now the most flexible and expandable rubidium standard in the industry, supporting Symmetricom...
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Solitaire Minerals Corp. Preparing to Drill High Grade Rubidium Zone at the Lateral Lake Claims.
PR Newswire; 6/14/2007; 700+ words
; ...119 feet. The average grade of Rubidium in Hole #1 was 1353 ppm over the...pegmatite from 47 feet and terminated in Rubidium-rich feldspar at 182 feet, remaining...at depth. The average grade of Rubidium in Hole # 2 was 1243 ppm over the...
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Symmetricom Announces Next Generation Rubidium Oscillator
Newspaper article from: Wireless News; 2/6/2008; 493 words
; ...Symmetricom Announces Next Generation Rubidium Oscillator WIRELESS NEWS-February 6...Symmetricom Announces Next Generation Rubidium Oscillator (C)2008 10Meters - http...generation networks, announced the 8200 Rubidium Oscillator. The ruggedized rubidium...
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Symmetricom Announces Next Generation Rubidium Oscillator.(Company overview)
Business Wire; 2/4/2008; 700+ words
; High Performance Rubidium Oscillator Combines Superior Frequency Stability, Low...of next generation networks, today announced the 8200 Rubidium Oscillator. The ruggedized rubidium oscillator is designed for ground tactical, shipboard...
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Rubidium (revised)
Book article from: Chemical Elements: From Carbon to Krypton
RUBIDIUM (REVISED) Note: This article, originally...updated in 2006 for the eBook edition. Overview Rubidium is a soft, silvery metal. It is one of the most active chemical elements. Rubidium is a member of the alkali family. The alkali...
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rubidium
Book article from: The Columbia Encyclopedia, Sixth Edition
rubidium , metallic chemical element; symbol Rb...1.53 at 20°C; valence +1. Rubidium is a very soft silver-white metal...sulfides. Its salts color a flame red. Rubidium is not found uncombined in nature but...
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Rubidium
Book article from: Chemistry: Foundations and Applications
Rubidium melting point: 39.5 ° C boiling...1.532 g/cm 3 most common ions: Rb + Rubidium is a soft, silvery alkali metal that reacts explosively with water. The word rubidium is derived from "rubidus" (Latin for...
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rubidium–strontium dating
Book article from: A Dictionary of Biology
rubidium–strontium dating A method of dating...specimens based on the decay of the radioisotope rubidium–87 into the stable isotope strontium–87. Natural rubidium contains 27.85% of rubidium–...
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rubidium—strontium dating
Book article from: A Dictionary of Earth Sciences
rubidium—strontium dating A radiometric...radioactive decay of 87 Rb to 87 Sr. Rubidium has two isotopes ( 85 Rb 72.15%, 87...crystallizes, it will usually incorporate both rubidium and strontium ions and the ratio of Rb...
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