LONDON Chidobe Awuzie Youth Jersey , Aug. 6 (Xinhua) -- While American Justin Gatlin attendedthe medal ceremony at the London Stadium, he was booed again quitelike Saturday when he grabbed the 100m title from 11-time worldchampion Usain Bolt.


Gatlin who last won the title at 2005 world championships wasoverlooked for his surprise win and his celebration was ruined byloud booing from a sell-out 60,000 spectators Saturday while bronzemedalist Bolt, in his farewell world championships Taco Charlton Youth Jersey , received ahero's treatment.


The scene repeated on Sunday when they were called to step onthe podium to receive medals from IAAF President Sebastian Coe.With his two-spell doping ban that ended in 2010, the 35-year-oldGatlin has never stopped fighting controversies and it looks thatthe stunning comeback win is not able to change the situation.


In an earlier medal ceremony, British heptathlon athlete JessicaEnnis-Hill was given the gold medal from the 2011 Daegu worldchampionships after Russian rival Tatyana Chernova was stripped ofthe title for doping.


Another highlight of the day was outside the stadium as theorganizers set the men's and women's marathon course through thecity's historic scenic sites.


Kenya's Boston marathon winner Geoffrey Kipkorir Kirui claimedthe men's title with two hours 8 minutes and 27 seconds to firstrace past the finish line on London's historic site Tower Bridgewhile women's gold medal went to Rose Chelimo of Bahrain in2:27:11.


"This is the best moment of my career, easily. I am so happy towin the world title because it is my first time at thesechampionships Connor Williams Youth Jersey ," said Kirui.


"I was not expecting to be world champion. I feared theEthiopian because he had such a fast time, so I just followed myplan to 35km and then felt my body to see how I was doing. Good forme it responded well," he said. "Winning this title has been mygoal for so long. Now my goal will be to repeat it."


Ethiopia's Tamirat Tola took silver in 2:09:49 and AlphonceSimbu of Tanzania bagged a bronze in 2:09:51.


Women's two-time world champion Edna Ngeringwony Kiplagat ofKenya settled for silver in 2:27:18 and Amy Cragg of the UnitedStates took away the bronze medal with the same time as Kiplagat.Enditem

Lead has long been considered the most effective element to protect individuals from the harmful effects ofradiation. Hence, lead is used extensively for X-Ray shielding to attenuate excessive doses of radiation. In X -Ray chambers Leighton Vander Esch Youth Jersey , the walls often contain lead sheets. Radiologists view the patient through a leaded glass screen if they are not in the same room;otherwise, they commonly wear lead aprons, if they intend to remain in the same room.

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 Sean Lee Youth Jersey , to properly shield a radiation source, 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 Terrance Williams Youth Jersey , 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, these radiation shielding compounds do not contain any toxic constituents. Similar to the entire Ecomass product line Cole Beasley Youth Jersey , their composite materials for x-ray shielding are RoHS compliant, do not contain any lead compounds, lead, or any material deemed toxic by the EPA.

Ecomass thermoplastic compounds have the following advantages Travis Frederick Youth Jersey , 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, 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

• Vib. Cheap Womens Jerseys Cheap Youth Jerseys Cheap Jerseys China Online Cheap Youth NFL Jerseys Cheap College Jerseys Wholesale Jerseys Wholesale Soccer Hoodies China Wholesale Hoodies Wholesale NBA Jerseys Wholesale MLB Hoodies