OndaPix.com - Comentarios de San Valentin para hi5 / Myspace
lundi 11 février 2008
jeudi 7 février 2008
médicaments
1er février 2008
La modification, qui entre en vigueur le 19 décembre 2007, vise notamment l’ajout d'une nouvelle indication de paiement et d'un nouveau critère d'utilisation à SprycelMC (dasatinib). Pour plus d’information, vous pouvez consulter la Capsule publiée à ce sujet. La modification vise aussi l'inscription de produits génériques de lisinopril pour un motif économique. Ces produits ont fait l’objet d’une évaluation prioritaire de la part du Conseil.
la sante en video
Comment un infarctus survient-il ?
Que se passe-t-il exactement au cours de la maladie d'Alzheimer ? De la fibromyalgie ?
Quels sont les mécanismes de la fécondation ? Comment les 3 premiers mois d'une grossesse se déroulent-ils ?
Découvrez les réponses à ces questions et à bien d'autres grâce à des vidéos pédagogiques en 3D, conçues pour vous aider à comprendre et à mémoriser les merveilles et les secrets du corps humain.
C'est facile... Il vous suffit de cliquer ! video.vulgaris-medical.com
samedi 2 février 2008
sale of building (Real Estate)
About LoopNet
LoopNet is a leading information services provider that offers a suite of products and services tailored to the national and local needs of the commercial real estate industry. LoopNet operates the largest and most heavily trafficked commercial real estate listing service online with more than 2.5 million registered members and 915,000 unique visitors monthly. The LoopNet online marketplace contains more than $425 billion of property available for sale and 3.7 billion square feet of property available for lease. LoopNet covers all commercial real estate property categories including commercial land, office space, industrial, multifamily (apartments) and retail. LoopNet attracts the largest community of commercial real estate professionals including brokers, investors, tenants, property managers, landlords, and appraisers. LoopNet's market-leading LoopLink product powers the web sites of more than 1,000 commercial real estate organizations and seamlessly integrates their web sites with LoopNet's listing service at www.LoopNet.com.
Browse by Popular Markets
Browse our commerical real estate listings for sale and for lease in the hottest urban markets across the nation. You’ll find Office, Retail and Industrial Properties, Shopping Centers, Multifamily Apartments, Investment Property and much more!
diamond
Diamond | |
---|---|
A scattering of round-brilliant cut diamonds shows off the many reflecting facets. | |
General | |
Category | Native Minerals |
Chemical formula | C |
Identification | |
Molecular Weight | 12.01 u |
Color | Typically yellow, brown or gray to colorless. Less often in blue, green, black, translucent white, pink, violet, orange, purple and red.[1] |
Crystal habit | Octahedral |
Crystal system | Isometric-Hexoctahedral (Cubic) |
Cleavage | 111 (perfect in four directions) |
Fracture | Conchoidal - step like |
Mohs Scale hardness | 10[1] |
Luster | Adamantine[1] |
Polish luster | Adamantine[1] |
Refractive index | 2.4175–2.4178 |
Optical Properties | Singly Refractive[1] |
Birefringence | none[1] |
Dispersion | .044[1] |
Pleochroism | none[1] |
Ultraviolet fluorescence | colorless to yellowish stones - inert to strong in long wave, and typically blue. Weaker in short wave.[1] |
Absorption spectra | In pale yellow stones a 415.5 nm line is typical. Irradiated and annealed diamonds often show a line around 594 nm when cooled to low temperatures.[1] |
Streak | White |
Specific gravity | 3.52 (+/- .01)[1] |
Density | 3.5-3.53 |
Diaphaneity | Transparent to subtransparent to translucent |
Diamond is an allotrope of carbon. It is the hardest known natural material and the third-hardest known material after aggregated diamond nanorods and ultrahard fullerite. Its hardness and high dispersion of light make it useful for industrial applications and jewelry.
Diamonds are specifically renowned as a material with superlative physical qualities; they make excellent abrasives because they can be scratched only by other diamonds, Borazon, ultrahard fullerite, or aggregated diamond nanorods, which also means they hold a polish extremely well and retain their lustre. Approximately 130 million carats (26,000 kg) are mined annually, with a total value of nearly USD $9 billion, and about 100,000 kg (220,000 lb) are synthesized annually.[2]
The name diamond derives from the ancient Greek adamas (αδάμας; “invincible”). They have been treasured as gemstones since their use as religious icons in ancient India and usage in engraving tools also dates to early human history.[3][4] Popularity of diamonds has risen since the 19th century because of increased supply, improved cutting and polishing techniques, growth in the world economy, and innovative and successful advertising campaigns. They are commonly judged by the “four Cs”: carat, clarity, color, and cut.
Roughly 49% of diamonds originate from central and southern Africa, although significant sources of the mineral have been discovered in Canada, India, Russia, Brazil, and Australia. They are mined from kimberlite and lamproite volcanic pipes, which brought to the surface the diamond crystals from deep in the Earth where the high pressure and temperature enables the formation of the crystals. The mining and distribution of natural diamonds are subjects of frequent controversy such as with concerns over the sale of conflict diamonds (aka blood diamonds) by African paramilitary groups.