HOLMIUM

hōlˈmēəm [Lat.,=Stockholm], metallic chemical element; symbol Ho; at. no. 67; at. wt. 164.9304; m.p. about 1,474 degrees Celsius; b.p. about 2,425 degrees Celsius; sp. gr. 8.78 at 25 degrees Celsius; valence +3. Holmium is a soft, malleable, lustrous, silvery metal of the lanthanide series in group IIIb of the periodic table. It is prepared by reduction of a holmium halide with calcium metal. Holmium is stable in dry air at room temperature but is rapidly oxidized in moist air or when heated. Holmia, the oxide, is found in nature, with other rare earths, in the minerals gadolinite and monazite. Holmium, its oxide, and its salts have no commercial uses. The metal was discovered spectroscopically in 1878 by the Swiss chemists Soret and Delafontaine and independently in 1879 by the Swedish chemist Per T. Cleve; it is named for Cleve's native city.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Holmium
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books on: Holmium  - 39 results

       More book Results: 1-10 11-20 21-30 31-39 >>  
 
1.
The History and Use of Our Earth's Chemical Elements: A Reference Guide
Book by Robert E.Krebs; Greenwood Press, 1998
...Terbium 233 Dysprosium 234 Holmium 235 Erbium 237 Thulium 238...
2.
Handbook of Glaucoma
Book by Augusto Azuara-Blanco, Vital P. Costa, Richard P. Wilson; Martin Dunitz, 2002
Subjects: Glaucoma--Diagnosis, Glaucoma--Treatment
3.
The Periodic Table: Its Story and Its Significance
Book by Eric R. Scerri; Oxford University Press, 2007
Subjects: Chemical Elements, Periodic Law--Tables
...Stockholm. Erbium, terbium, ytterbium, and yttrium were all found in ores located around this village, while a fifth element, holmium, was named after the Latin for Stockholm. The naming of the later trans-uranium elements is a separate story in itself...
4.
Chambers's Technical Dictionary
Book by C. F. Tweney, L. E. C. Hughes; Macmillan, 1958
Subjects: Technology--Dictionaries
5.
Dictionary of Word Origins
Book by Joseph T. Shipley; Philosophical Library, 1945
Subjects: English Language--Etymology--Dictionaries
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magazine articles on: Holmium  - 5 results

 
 
1.
Lasers in Dentistry
Magazine article by Ricki Lewis; FDA Consumer, Vol. 29, January 1995
Subjects: Laser dentistry--Usage, Lasers in dentistry--Usage
...use: carbon dioxide, Nd:YAG, argon, and holmium:YAG. A carbon dioxide (CO.sub.2 laser...Another device used on soft tissues is the holmium:YAG laser. Oral and maxillofacial surgeons...vary in chemical basis (CO.sub.2, Nd:YAG, holmium:YAG, argon, and others), wavelength of...
2.
Balloons, Lasers and Scrapers: Help for Hearts and Blood Vessels
Magazine article by Dixie Farley; FDA Consumer, Vol. 25, April 1991
Subjects: Arterial catheterization--Innovations, Balloon angioplasty--Innovations, Cardiology--Equipment and supplies, Cardiopulmonary bypass--Innovations, Laser surgery--Innovations, Lasers in surgery--Innovations, Transluminal angioplasty--Innovations
...artery. Another type of laser applied directly is the so-called "Holmium" laser (Trimedyne, Inc., Tustin, Calif), so named because its powered by a holmium YAG crystal. (Holmium is a rare metal.) A laser-light fiber inside a catheter is snaked...
3.
Reptilian Hearts Inspire New Treatment
Magazine article; USA Today (Society for the Advancement of Education), Vol. 126, February 1998
Subjects: Heart, Heart surgery, Lasers in medicine--Innovations, Medical lasers--Innovations, Surgery
...colleagues at Columbia-Presbyterian are experimenting with a holmium-YAG laser that would permit the procedure to be performed without...dioxide laser. which must be fired along a straight line. The holmium-YAG laser, in contrast, can be sent along flexible optical...
4.
A Panoply of Product Approvals
Magazine article by Tamar Nordenberg; FDA Consumer, Vol. 34, May 2000
Subjects: Drug evaluation, Drugs--Evaluation, Health facilities--Innovations, Medical care--Product development, United States. Food and Drug Administration--Powers and duties
...arteries before (Minneapolis) angioplasty Eclipse TMR Holmium Coronary artery Eclipse Medical Laser System disease Technologies Inc...
5.
Graphic Arts
Magazine article by Emily Cox, Henry Rathvon; The Atlantic Monthly, Vol. 293, June 2004
...a concerto h. Excessively radioactive holmium covered by patent Note: The instructions...


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newspaper articles on: Holmium  - 7 results

       More newspaper Results: 1-7 >>  
 
1.
When I Learnt What the Surgeon Had in Mind, My Eyes Watered. Then He Zapped My Prostate with a Laser; ANTHONY GOLDMAN, 60, a College Lecturer from Balham, South London, Had a Transurethral Resection of the Prostate (TURP) to Reduce the Size of His Enlarged Prostate Gland. Here, Mr Goldman Tells THEA JOURDAN about His Experience and His Surgeon, Mr Rick Popert, Describes the Procedure. Good HealthME AND MY OPERATION PROSTATE RESECTION
Newspaper article; The Daily Mail (London, England), July 20, 2004
...Thomas Hospital NHS Trust, carried out the Holmium Laser TURP. NOT ALL men with enlarged...father children after having a TURP. A Holmium Laser TURP is not widely available on...NICE). At Guys, the programme to buy the Holmium Laser and equipment has been funded by...
2.
Kidney Stones: How, Why? Amount of Calcium in Urine One Clue
Newspaper article; The Washington Times, October 2, 2007
Subjects: College administrators, Kidney stones, Medical research, Medicine, Experimental, Oxalates, Oxalic acid, Plant growth promoting substances
...surgery, says Dr. Thomas Jarrett, professor and chairman of urology at George Washington University Hospital in Northwest. "A holmium laser can break up any kind of stone, using a fiber less than 1 millimeter in diameter," Dr. Jarrett says. "They have been...
3.
Homework for Grown-Ups; Everything You Learnt at School. but Can You Remember?
Newspaper article; The Daily Mail (London, England), September 12, 2009
...at Little Bighorn? a) Apache and Sioux b) Sioux and Cheyenne c) Shawnee and Lakota d) Mohawk and Seneca 5. What are Atimony, Holmium, Ytterbium, Bismuth and Americium? a) moons of Jupiter b) nuclear fuels c) elements d) subatomic particles 6. In Christian...
4.
Yates Is Heading Posh for Punters
Newspaper article; The Birmingham Post (England), June 10, 2004
...around the UK. Under the terms of the deal, managers of Yates will take an 18.6 per cent stake in Thoriums parent company Holmium. The largest shareholding of eight per cent will be held by chief executive Mark Jones. Thorium also warned there was a...
5.
Ultrasound and Lasers Killed off My Prostrate Cancer-But Not My Love Life
Newspaper article; The Daily Mail (London, England), May 16, 2006
Subjects: Cancer treatment, Cancer--Care and treatment, Medical equipment, Physiological apparatus
...and diarrhoea. Then he told me about a revolutionary new procedure combining High Intensity Frequency Ultrasound (HIFU) and Holmium Laser Ablation of the Prostate (HoLAP). He explained that the HIFU could destroy the cancer without the need of a major operation...
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encyclopedia articles on: Holmium  - 5 results

 
 
1.
Holmium
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
HOLMIUM hol me m Lat.,=Stockholm, metallic chemical element...Celsius; sp. gr. 8.78 at 25 degrees Celsius; valence +3. Holmium is a soft, malleable, lustrous, silvery metal of the...the periodic table . It is prepared by reduction of a holmium halide with calcium metal. Holmium is stable in dry air...
2.
Periodic Table of the Elements: Holmium
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
PERIODIC TABLE OF THE ELEMENTS: HOLMIUM Periodic Table of the Elements: Holmium Atomic Number: 67 Atomic Symbol: Ho Holmium Atomic Weight: 164.9304 Electron Configuration: 2 8 18 29 8 2 ____________________ Copyright...
3.
Ho
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
HO symbol for the element holmium . ____________________ Copyright 2009 Columbia University Press. Used with the permission of Columbia University Press. All rights reserved.
4.
Lanthanide Series
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...cerium , praseodymium , neodymium , promethium , samarium , europium , gadolinium , terbium , dysprosium , holmium , erbium , thulium , ytterbium , and lutetium . All of the members of the series very closely resemble lanthanum and...
5.
Elements
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...hafnium Hf 72 178.49 2227. 20 4602. hassium Hs 108 (265) helium He 2 4. < 272.2 268.934 holmium Ho 67 164.9304 1474. 2425. hydrogen H 1 1.00794 259.14 252.87 indium In 49 114.82 156.61...


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