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Radiation protection is classified into three categories: occupational radiation protection (protection of workers); medical radiation protection (protection of patients); and public radiation protection (protection of individual members and public as a whole).Many government regulatory bodieshave been formed with the purpose of limiting the average citizen’sexposure to radiation and ensuring a secure radiation environment.

Radiation shielding is a means to control the amount and dose of radiation received by introducing a material that helps to block transmittal of the harmful radiation waves. However,different types of ionizing radiation interact with shielding materials in different ways. In other words, to properly shield a radiation source [url=http://www.officialsteelersfootballstore.com/]Cheap Steelers Jerseys[/url] , one must first understand what type of radiation they are shielding and how that radiation interacts with and is affected by various radiation shielding materials.

X-Ray shielding is best achieved by utilizing materialsthat contain atoms with heavy nuclei; in other words, the denser the material the better. The advantage of high density materials is due to the fact that a material’s absorption power is directly proportional to the weight of the nucleus. Lead is the most commonly used metal for this purpose, because of its high density and high atomic number [url=http://www.officialsteelersfootballstore.com/joe-haden-jersey-cheap]Joe Haden Game Jersey[/url] , and because it is fairly cheap.

Of late, there have been increasingly strict regulatory policies regarding the use and sale of lead products. These policies have come as a result of the rising health concern over the use of lead as more and more studies have come out detailing the toxicity of lead and the serious health risks that exposure to this mineral poses.

Ecomass technologies have helped industriesend these concerns by inventing eco-friendly thermoplastic compounds that provide shielding 100% equivalent to lead, and which can be molded into complex shapes to meet any design. Moreover [url=http://www.officialsteelersfootballstore.com/jon-bostic-jersey-cheap]Jon Bostic Game Jersey[/url] , these radiation shielding compounds do not contain any toxic constituents. Similar to the entire Ecomass product line, their composite materials for x-ray shielding are RoHS compliant, do not contain any lead compounds [url=http://www.officialsteelersfootballstore.com/bud-dupree-jersey-cheap]Bud Dupree Game Jersey[/url] , lead, or any material deemed toxic by the EPA.

Ecomass thermoplastic compounds have the following advantages, in comparison to lead:

• They are non-toxic

• They are injection mouldable

• They have variable specific gravity

• They can be custom formulated for specific applications

• They have superior physical properties

• They help in reduction of secondary machining and post-production costs

• They are not subject to the rigorous standards for use and disposal that lead is

These compounds have numerous lead replacement applications beyond just X-Ray shielding [url=http://www.officialsteelersfootballstore.com/javon-hargrave-jersey-cheap]Javon Hargrave Game Jersey[/url] , some of which include:

• Replacement for lead wool and lead paste(used for repairing of radiation shields)

• Medical Imaging

• Nuclear Medicine

• X-Ray tube housings

• Shipping Containers

• Ballast Systems

• Vibration Dampening applications where a non-toxic, high-density, high strength material is required

Vibration Dampening is another popular use of Ecomass compounds as a lead replacement solution. Vibration dampening (or vibration damping) is a process of reducing mechanical energy out of a system to minimize or eliminate vibrations. Sound proofing is also a type of vibration dampening wherein the sound energy is dissipated from the oscillatory system. Other examples include mechanical systems which experience resistance in electronic oscillators [url=http://www.officialsteelersfootballstore.com/sean-davis-jersey-cheap]Sean Davis Game Jersey[/url] , viscous drag and scattering and absorption of light.

Ecomass Compounds have successfully replaced lead in various industrial applications delivering eco-friendly solutions to manufacturers without impacting performance.

PARIS， Nov. 27 (Xinhua) -- The decisive round of French right-center parties primary started on Sunday and it will send one of the two conservatives， Francois Fillon and Alain Juppe， into the presidential race.

Final opinion polls projected the frontrunner Fillon to seize a major lead over veteran Juppe who had been long dominating the vote intentions before the "ultra-liberal" contender reported a surprise lead last Sunday.

Pollsters also predicted the winner of U.S.-style competition， the first ever held by French conservatives， will occupy the Elysee Palace next year due sliding popularity of the Socialist ruling camp and a lack of majority supporting the far-right National Front party.

An Opinionway poll released on Friday showed Fillon would win the conservative nomination with 61 percent of votes versus 39 percent for his rival.

"I await the voters' verdict. Now it is they who speak and not the candidates，" Fillon said after casting his ballot in Paris seventh district.

The former prime minister vowed to put ailing French economy on track thanks "to more radical project" which include raising retirement age and reducing public expenditure by cutting half million public service jobs in addition to undo the 35-hour working week to make the French working longer.

Juppe， 71， who has served as prime minister and foreign minister， portrayed himself as a modern centrist with modera. [url=http://www.joshallenjersey.com/]Josh Allen Jersey[/url]   [url=http://www.jjwattjersey.com/]J.J. Watt Jersey[/url]   [url=http://www.jamesconnerjersey.com/]Authentic James Conner Jersey[/url]   [url=http://www.derekcarrjersey.com/]Authentic Derek Carr Jersey[/url]   [url=http://www.dakprescottshop.com/]Authentic Dak Prescott Jersey[/url]   [url=http://www.christianmccaffreyjersey.com/]Christian McCaffrey Womens Jersey[/url]   [url=http://www.carsonwentzjerseyshop.com/]Carson Wentz Kids Jersey[/url]   [url=http://www.calvinridleyjersey.com/]Calvin Ridley Falcons Jersey[/url]   [url=http://www.bakermayfieldjersey.com/]Baker Mayfield Browns Jersey[/url]   [url=http://www.antoniobrownshop.com/]Antonio Brown Steelers Jersey[/url]