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Archive for November, 2007

By Scott E. Miners
How does energy medicine work? Isn’t it the same as thought medicine? What energies comprise body and mind? We know the body is made of particles, in some views, or waves of energy from other viewpoints. 1
Is there a scientific instrument (other than the human mind) precise enough to measure the smallest [...]

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In the United States, the Food and Drug Administration (FDA) regulates condoms to ensure their safety and effectiveness. Different countries have different regulatory agencies. For example, condoms in Europe that have been properly tested and approved should carry the CE Mark. Elsewhere in the world, you can find that condoms are ISO approved. Also, individual [...]

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1000 BC: Condom use can be traced back several thousand years. It is known that around 1000 BC the ancient Egyptians used a linen sheath for protection against disease.1

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Condom, as everyone knows, is a protective sheathe made from rubbery substance such as latex or polyurethane, close at one end and open at another. It protects the user from Sexually Transmitted Diseases (such as AIDS and many more) and helps in avoiding unwanted pregnancy. Condoms come in different sizes, shapes, colors, flavors etc. They [...]

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Alexander Graham Bell (March 3, 1847, Edinburgh, Scotland – August 2, 1922, Baddek, Nova Scotia) invented the telephone (with Thomas Watson) in 1876. Bell also improved Thomas Edison’s phonograph. Bell invented the multiple telegraph (1875), the hydroairplane, the photo-sensitive selenium cell (the photophone, a wireless phone, developed with Sumner Tainter), and new techniques for teaching [...]

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Betha Decays

Dr. Chien-Shiung Wu (Shanghai, China, May 31, 1912 – New York, USA, February 16, 1997) was a nuclear physicist who studied beta-decay (a weak interaction in which one of the neutrons in the nucleus of an atom decays into a proton and an electron; the proton enters the nucleus, forming an isotope, and the electron [...]

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Contact lenses are tiny removable lenses that are worn in contact with the eye (they rest directly on the cornea of the eye). Like glasses, they improve the wearer’s vision. This type of lens was envisioned (but not actually made) by Leonardo da Vinci (around 1508) and later by René Descartes (around 1636-1637).
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Calcium Phosphate and Hydroxyapatite Coatings

Calcium Phosphate Coatings
Porous hydroxyapatite has been accepted that due to its unfavourable mechanical properties it cannot be used under load bearing purposes. For this reason hydroxyapatite has been used as thin film coatings on metallic alloys. Of the metallic alloys investigated titanium based alloys have shown to be the material of preference for thin film [...]

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What is Hydroxyapatite?

Chemical formula
Ca10(PO4)6(OH)2
Background
Hydroxyapatite is chemically similar to the mineral component of bones and hard tissues in mammals. It is one of few materials that are classed as bioactive, meaning that it will support bone ingrowth and osseointegration when used in orthopaedic, dental and maxillofacial applications.
The chemical nature of hydroxyapatite lends itself to substitution, meaning that it [...]

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Bone Cement Composites
During the last 5 years bone cement materials have grown in popularity and are very promising osteoconductive substitutes for bone graft. They are prepared like acrylic cements and contain a range of powders such as monocalcium phosphate, tricalcium phosphate and calcium carbonate, which is mixed in a solution of sodium phosphate. These cements [...]

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