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Who doesn't love arts and crafts? Making things with your hands using assorted materials is a rewarding achievement. There's a thrill in
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Do you want an awesome source for your craft materials? Lots of online outlets provide
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Search for fabric and other arts and crafts supplies online. A lot of the time, you can compare prices and find coupons on
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Try setting aside a craft job that you can do while doing arts and crafts projects with your kids. If you are really into arts and crafts, and you
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When you are creating art projects, do not worry too much about whether or not others will like the finished project. This is something that
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Save On Crafts is an online retailer offering a wide variety of crafting items at
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Store arts and crafts supplies in old show boxes. If you organize your supplies
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Now that you've read this article, you should have more enthusiasm for arts and crafts. Maybe you have some new ideas to try. Perhaps
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Lightweight composite metal foams could prove to make all the difference when it
comes to x-ray and gamma ray shieldingand neutron radiation protectionas they
can absorb the energy created during high-impact collisions, says study. This
study was published in the Radiation Physics and Chemistry Journal and was
authored by researchers from NC State. The work was also supported by the
Nuclear Energy University Program grant offered by DOE’s Office of Nuclear
Energy.

“There’s an opportunity to use composite metal foam to develop safer systems for transporting nuclear
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structures, and new shielding for use in CT scanners,” says AfsanehRabiei, one
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means that metal foams could be extremely useful for space exploration
applications, medical technology and nuclear safety.

This lightweight metal foam was first built to be used in military and transportation
applications, but the authors also wanted to determine whether it could be
helpful in space exploration applications and nuclear radiationprotection, and
to examine whether this metal foam could protect against high
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shielding against different types of radiation.

To examine its use, the study conducted several tests to examine the foam’s effectiveness at gamma ray
shielding, x-ray shielding and radiation protection. This was then compared to
the performance of materials that are currently being used in all kinds of
shielding applications. The comparison proved that while each sample had the
same weight, it varied in terms of volume.

A composite material known as high-Z steel-steel was found to be the most effective in offering protection
against all three forms of radiation. This metal is mostly comprises of
stainless
steel Will
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The major difference is that its structure was modified so that the composite
foam which included tungsten wasn’t denser than metal foams made using stainless
steel only.

The shielding performance of this new material was then tested against different types of gamma rays as gamma rays can have different
energies depending on the source material. For example, barium emits low energy
gamma rays while cobalt or cesium emits higher-energy rays.

The study went on to show that high-Z steel-steelfoam was on par with most bulk materials
at blocking high-energy gamma rays, but it was far better than most, including
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also outshone others when it came to neutron radiation protection and x-ray
shielding.

This foam is non-toxic which makes it easy to recycle and manufacture. It can also act as a viable candidate for nuclear structural
applications because of its thermal and mechanical properties, and its
capability to absorb energy. Researchers are now working on modifying the
composition of this metal foam to make it a more effective shield against
x-rays. Rabiei says that early results are extremely promising.
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Posted 30 Nov 2018

Posted 12 Nov 2020

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