Tuesday, October 13, 2009

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Friday, August 21, 2009

About 316L stainless steel

In metallurgy, stainless steel, also known as inox steel or inox, is defined as a steel alloy with a minimum of 11% chromium content by mass. Stainless steel does not stain, corrode, or rust as easily as ordinary steel (it stains less, but it is not stain-proof).It is also called corrosion-resistant steel or CRES when the alloy type and grade are not detailed, particularly in the aviation industry. There are different grades and surface finishes of stainless steel to suit the environment to which the material will be subjected in its lifetime. Common uses of stainless steel are cutlery and watch cases and bands.

Stainless steel differs from carbon steel by the amount of chromium present. Carbon steel rusts when exposed to air and moisture. This iron oxide film (the rust) is active and accelerates corrosion by forming more iron oxide. Stainless steels have sufficient amounts of chromium present so that a passive film of chromium oxide forms which prevents further surface corrosion and blocks corrosion from spreading into the metal's internal structure (http://www.ti-ss.com/).

Stainless steel’s resistance to corrosion and staining, low maintenance, relatively low cost, and familiar luster make it an ideal base material for a host of commercial applications. There are over 150 grades of stainless steel, of which fifteen are most common. The alloy is milled into coils, sheets, plates, bars, wire, and tubing to be used in cookware, cutlery, hardware, surgical instruments, major appliances, industrial equipment, and as an automotive and aerospace structural alloy and construction material in large buildings. Storage tanks and tankers used to transport orange juice and other food are often made of stainless steel, due to its corrosion resistance and antibacterial properties. This also influences its use in commercial kitchens and food processing plants, as it can be steam cleaned, sterilized, and does not need painting or application of other surface finishes.

Stainless steel is also used for jewellery and watches. The most common stainless steel alloy used for this is 316L. It can be re-finished by any jeweller and will not oxidize or turn black.

Some firearms incorporate stainless steel components as an alternative to blued or parkerized steel. Some handguns, such as the Smith & Wesson Model 60 and the Colt M1911 can be made entirely from stainless steel. This gives a high-luster finish similar in appearance to nickel plating; but, unlike plating, the finish is not subject to flaking, peeling, wear-off due to rubbing (as when repeatedly removed from a holster over the course of time), or rust when scratched.

Some automotive aftermarket parts manufacturers use stainless steel only for the making of short shifters, shift knobs and weighted shift knobs.

Stainless steel is 100% recyclable. An average stainless steel object is composed of about 60% recycled material of which ≈40% originates from end-of-life products and ≈60% comes from manufacturing processes.

Saturday, August 15, 2009

Germanium. The secret behind the health benefits of garlic, ginseng and mushrooms

Germanium. The secret behind the health benefits of garlic, ginseng and mushrooms.

Although not officially classed as a "trace mineral", Germanium is one of the most important reasons why natural foods, such as garlic are recommended by nutritional practitioners.

Many disease states, such as osteoporosis, heart disease, immune system dysfunction and cancer have all been shown to respond to germanium therapy. It would appear that the reason for germanium's effectiveness is its ability to regulate the uptake of oxygen in the cells.

In plants, this process helps protect them from infections by viruses, bacteria and fungi as well as increasing growth and protecting them from the cold. In humans, it seems the effects are both related to oxygen regulation and strong antioxidant activity.

Germanium seems to be particularly effective in enhancing the body's natural resistance to viruses. this led to it being used as a treatment for AIDS in the late 1980s, prior to some toxicity problems with one of the synthetic forms. If the same critical approach was applied to aids drugs, they would surely be taken off the market tomorrow (or even better, would never have even got there!).

It is no surprise that the dietary sources rich in germanium are those that are used routinely by traditional medicine, such as garlic, ginseng, comfrey and mushrooms. It is also a powerful analgaesic, which enhances the effects of the body's own endorphins.

Functions of Germanium in the body

-Antiviral activity
-Powerful antioxidant
-Analgaesic
-Anticancer properties
-Enhances oxygen supply to tissues
-May protect against osteoporosis

Germanium deficiency
Although germanium deficiency per se is not recognised, a lack of germanium is associated with infection and immune disorders, heart disease and high cholesterol, arthritis, osteoporosis, cancer and many other conditions.

Normal amounts of Germanium in the diet

Germanium is present in many natural foods, comprising around 1mg/day in an average western diet. High intakes of synthetic germanium (50-250mg/day) have been shown to be detrimental to health, although this seems to depend on the form taken.

Germanium supplements

Whilst organic germanium (germanium sesquioxide) and germanium lactate citrate seem to be fairy safe, germanium dioxide has been associated with permanent kidney damage. It was this knowledge that prompted regulatory bodies to ban ALL forms of germanium on a "tar them all with the same brush" approach that led to its withdrawal for the treatment of AIDS patients, despite the fact that the alternatives not only kill AIDS patients, but they may even be responsible for it in the first place!

Germanium supplements are now not easily available and it should be sought through dietary sources.Also Germanium can be use as Germanium Jeweley to keep body healthy.