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Topic: Holmium

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Terbium

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Rare earth element

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Ytterbium

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Periodic table (standard)

Lanthanum

	Holmium (Ho) - Chemical properties, Health and Environmental effects
		Holmium is a melleable, soft, lustrous metal with a silvery colour, belonging to the lantanides series of the periodic chart of elements.
		Holmium oxide is used as yellow gas colouring.
		Holmium has no biological role and it is considered one of the least abundant elements present in human body.
	www.lenntech.com /Periodic-chart-elements/Ho-en.htm (261 words)

	Interventional procedures consultation document - holmium laser prostatectomy
		Current evidence on the safety and efficacy of holmium laser prostatectomy appears adequate to support the use of the procedure, provided that normal arrangements are in place for consent, audit and clinical governance.
		Holmium laser prostatectomy is used to treat BPH.
		Specialist Advisors considered holmium laser prostatectomy to be established practice and preferable in many cases to TURP and requires a shorter stay in hospital.
	www.nice.org.uk /templates/core/page/page.aspx?mode=clear&o=IP138consultation (768 words)

	Chemistry : Periodic Table : holmium : key information
		Holmium is relatively soft and malleable, and is stable in dry air at room temperature.
		Here is a brief summary of the isolation of holmium.
		Holmium metal is available commercially so it is not normally necessary to make it in the laboratory, which is just as well as it is difficult to isolate as the pure metal.
	www.webelements.com /webelements/elements/text/Ho/key.html (379 words)

	holmium — FactMonster.com
		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.
		Periodic Table of the Elements: Holmium - Periodic Table of the Elements: Holmium 67 Ho Holmium 164.9304 2 · 8 · 18 29 ·...
	www.factmonster.com /encyclopedia/holmium (185 words)

	NationMaster - Encyclopedia: Holmium
		Holmium is a relatively soft and malleable element that is fairly corrosion-resistant and stable in dry air at standard temperature and pressure.
		Holmium is one of the colorants used for cubic zirconia, for use in jewelry, providing a dichromic color in peach or yellow, depending on the lighting source.
		Holmium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.
	www.nationmaster.com /encyclopedia/Holmium (4213 words)

	holmium
		Holmium - (L. Holmia, for Stockholm), Ho; at.
		The spectral absorption bands of holmium were noticed in 1878 by the Swiss chemists Delafontaine and Soret, who announced the existence of an "Element X".
		Holmium has 46 other isotopes known, all of which are radioactive.
	www.speclab.com /elements/holmium.htm (185 words)

	UroToday - Holmium: Yttrium-Aluminum-Garnet Laser Puncture of Ureteroceles in Neonatal Period. (Site not responding. Last check: 2007-11-06)
		Holmium: Yttrium-Aluminum-Garnet Laser Puncture of Ureteroceles in Neonatal Period.
		A holmium: YAG laser was used to incise the ureterocele, and a 200, 365, or 550-?m laser fiber was passed through a 6F or 7.5F cystoscope.
		The group concluded Holmium: YAG laser puncture of ureterocele is a safe, efficacious, and viable option for children in the neonatal period.
	www.urotoday.com /58/browse_categories/pediatric_urology/holmium_yttriumaluminumgarnet_laser_puncture_of_ureteroceles_in_neonatal_period.html (346 words)

	Holmium
		Until a few years later the elememt holmium was known as element X. a Swedish scientist named Per theodor Cleve was working with a rare- earth element called erbia, when he identified Holmium.
		Holmium is a matalic to light silver luster.
		Holmium is a ductile, is malleable and soft like lead.
	www.mvschools.org /ms/projects/html/brick/holmium.htm (280 words)

	holmium - HighBeam Encyclopedia (Site not responding. Last check: 2007-11-06)
		Holmium is a soft, malleable, lustrous, silvery metal of the lanthanide series in Group 3 of the periodic table.
		Study shows advantages of holmium laser for BPH: results with 'more efficient' holmium laser are similar to those of TURP at 4 years.(BPH)
		Holmium ablation may be valid option for strictures: nearly three-fourths of patients show durable response at 18.7 months in small study.
	www.encyclopedia.com /doc/1E1-holmium.html (521 words)

	Holmium \| World of Chemistry
		Holmium is a rare earth element, one of the elements found in Row 6 of the periodic table between Groups 2 and 3.
		The abundance of holmium in the Earth's crust is estimated to be about 0.7-1.2 parts per million, making it less common than most other rare earth elements, but more common than some familiar elements, such as iodine, silver, mercury, and gold.
		Holmium lasers are now used to some extent in eye surgery where they are used to treat glaucoma and reduce abnormal eye pressure.
	www.bookrags.com /research/holmium-woc (300 words)

	Holmium laser
		The experience of treatment of patients with ureteric and ureteropelvic strictures using Holmium Laser is presented.
		The Laser device CTH-10 (Russia) on the basis of Holmium Laser functioning in pulsed fashion at a wavelength of 2.09 mm, with energy 0.2 - 1.5 J and frequency 1 - 15 Hz was used during treatment.
		We believe, that Holmium Laser can be used as either separate method, or in combination with other endourological methods in the treatment of patients with uretral and bladder neck strictures.
	www.irradia.se /1holmiumURO.htm (887 words)

	Ho - Holmium
		The special absorption bands of holmium were noticed in1878 by the Swiss chemists Delafontaine and Soret, who announced the existence of an"Element X." Cleve, of Sweden, later independently discovered the element whileworking on erbia earth.
		Holmium occurs in gadolinite, monazite, and inother rare-earth minerals.
		It has been isolated by the reduction of itsanhydrous chloride or fluoride with calcium metal.
	www.physlink.com /Reference/ChemicalElements/holmium.cfm (91 words)

	Holmium Laser Treatment
		Holmium laser treatments use laser energy to remove obstructing prostate tissue.
		Holmium laser treatment uses a thin flexible fiber to transmit the laser energy to the prostate with a very high degree of precision.
		Since holmium energy penetrates superficially, thermal injury to surrounding tissue that could delay your symptom relief is avoided.
	www.bostonscientific.com /templatedata/imports/HTML/holmium/how_it_works.html (237 words)

	Holmium (Site not responding. Last check: 2007-11-06)
		Holmium belongs to the lanthanide series of rare earths.
		Most commercial-grade holmium is obtained from monazite sand, which is a mixture of phosphates of calcium, thorium, cerium, and most of the other rare earths.
		This sand is often 50% rare earth by mass, with approximately 0.05% being holmium.
	nobel.scas.bcit.ca /resource/ptable/ho.htm (117 words)

	Holmium (Ho) (Site not responding. Last check: 2007-11-06)
		Holmium is one of the least abundant of the rare earth metals.
		It is stable in dry air at room temperature, but it rapidly oxidizes in moist air and at elevated temperatures.
		Holmium occurs in gadolinite, monazite and other rare-earth minerals; however, it is commercially obtained from monazite.
	www.bayerus.com /msms/fun/pages/periodic/holmium/index.html (105 words)

	Holmium laser prostatectomy for benign prostatic hyperplasia: a systematic review
		In terms of efficacy, the holmium laser procedures appear to be equivalent to TURP for symptom relief.
		Safety: The holmium laser procedures are considered at least as safe as TURP in terms of blood loss, rates of stricture and urinary tract infection.
		Efficacy: The holmium laser procedures appear to be at least as efficacious as TURP in the short term but long-term efficacy could not be determined.
	www.tripdatabase.com /spider.html?itemid=308070 (771 words)

	It's Elemental - The Element Holmium
		Holmia is the oxide of the element holmium and thulia is the oxide of the element thulium.
		Today, holmium is primarily obtained through an ion exchange process from monazite sand ((Ce, La, Th, Nd, Y)PO), a material rich in rare earth elements that can contain as much as 0.05% holmium.
		Holmium has no commercial applications, although it has unusual magnetic properties that could be exploited in the future.
	education.jlab.org /itselemental/ele067.html (185 words)

	Applications of Holmium Laser in Medicine. Abstracts.
		The Laser device on the basis of Holmium Laser functioning in pulsed fashion at a wavelength of 2.09 mm, with energy 0.2 - 1.5 J and frequency 1 - 15 Hz was used during treatment.
		On the basis of the results from this study, the Holmium wavelength is effective for lithotripsy in addition to its previously reported usefulness for soft tissue applications, and thus, is a cost-effective and highly useful clinical device.
		The Holmium laser is a powerful yet precise and safe tool easily adapted for use in arthroscopic surgery.
	www.medlaser.ru /public/abstr.htm (4494 words)

	Holmium Laser
		The multi-functional Holmium Laser is designed to be used in a variety of specialties including Urology, Orthopedics, ENT, Gynecology, and General Surgery.
		The holmium laser fragments urinary and bladder stones of all compositions.
		The Holmium Laser comes in a variety of models, from low to high-powered units allowing the Holmium to perform a wide variety of procedures.
	www.laserrental.com /holmium.ivnu (156 words)

	CRCPress Periodic Table Online: Cadmium
		The spectral absorption bands of holmium were noticed in 1878 by the Swiss chemists Delafontaine and Soret, who announced the existence of an “Element X”.
		Holmium has 49 other isotopes known, all of which are radioactive.
		The price of 99.9% holmium metal is about $20/g.
	chemnetbase.com /periodic_table/elements/holmium.htm (177 words)

	Holmium Information Center (Site not responding. Last check: 2007-11-06)
		Holmium has the highest magnetic moment (10.6µB) of any naturally occurring element.
		Because of this it has been used to create the highest known magnetic fields by placing it within high strength magnets as a pole piece or magnetic flux concentrator.
		Holmium lases at a human eye safe 2.08 microns allowing its use in a variety of medical and dental applications in both yttrium-aluminum-garnet (YAG) and yttrium-lanthanum-fluoride (YLF) solid state lasers.
	www.americanelements.com /hoinfo3.htm (339 words)

	holmium
		Once the fiber optic catheter is in position, the cardiologist activates a holmium laser connected to the fiber optic catheter to create a small channel.
		Although this holmium laser PMR therapy is under FDA investigation, Dr.
		Ali Massumi of Hall-Garcia Cardiology Associates was certified in early 1998 to use it on patients with severe heart artery blockage and angina (chest pain), and who are not candidates for stents or bypass surgery.
	www.hgcardio.com /holmium.htm (341 words)

	Holmium Laser Ablation of the Prostate (HoLAP) and Holmium Laser Enucleation of the Prostate (HoLEP) - Urology ...
		Since the holmium absorption depth is only.5 mm or less, tissue is ablated faster than heat is conducted into surrounding tissue.
		Holmium energy is delivered in a pulsed mode with each pulse containing enough energy to vaporize the tissue.
		Holmium laser ablation of the prostate (HoLAP) and Holmium laser enucleation of the prostate (HoLEP) are two options that effectively treat obstructive prostates with little blood loss.
	www.medcompare.com /spotlight.asp?spotlightid=178 (866 words)

	Principal Metals-Holmium
		The special absorption bands of holmium were noticed in 1878 by the Swiss chemists Delafontaine and Soret, who announced the existence of an "Element X." Cleve, of Sweden, later independently discovered the element while working on erbia earth.
		Holmia, the yellow oxide, was prepared by Homberg in 1911.
		The price of 99+% holmium metal is about $10/g.
	www.principalmetals.com /utilities/67.htm (165 words)

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