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claireb27

Safe and sustainable - Fusion - Euratom Energy - Research & Innovation - European Commi... - 0 views

  • Safety and Environmental Assessment of Fusion Power (SEAFP)
  • chain reaction
  • absence of '
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  • no production of long-lived, highly radiotoxic products
  • very low fuel inventory in the reactor during operation and to the rapid cooling that extinguishes the fusion reactions should a malfunction occur.
  • In less than 100 years the residual activity of these materials would be less than the radiotoxicity found in the waste from a conventional coal-fired power station.
  • Fusion power does not produce any greenhouse gases
  • To generate 7 billion kilowatt hours of electricity, a 1000-megawatt fusion power station would consume about 100 kg of deuterium and three tonnes of lithium per year. This compares to the 1.5 million tonnes of coal in an equivalent fossil-fuel plant.
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    Safety
chasefortier

What are the risks of an MRI scan? - MRI: Get the Facts and Risks of Magnetic Resonance... - 0 views

  • There are no known side effects of an MRI scan.
  • Metallic chips, materials, surgical clips, or foreign material (artificial joints, metallic bone plates, or prosthetic devices, etc.) can significantly distort the images obtained by the MRI scanner.
chasefortier

MRI Specialized Imaging Studies - 0 views

  • MR Angiography: MR angiography can provide diagnostic images of the vascular system without the need for arterial puncture or catheters.  A quick, non-invasive means for evaluating most vascular problems is now available. MR angiography is used to evaluate aneurysms and other malformations in blood vessels, to screen for arterial diseases and abnormalities in the body’s circulating system.  Intravenous Gadolinium contrast is used to visualize abnormalities in the neck, abdomen, renal system and extremities. Non-Invasive Prostate Imaging: MRI can provide extremely accurate information for the diagnosis and pre-treatment planning of prostate cancer.  In the past, this predominantly involved the use of a coil placed within the rectum.  Now, with advances in coil technology and software, these studies can be performed with a coil placed over the pelvic area.  These new coils provide images of similar resolution without the discomfort of the endo-rectal coil. Breast MRI: Breast MRI has emerged as a valuable addition to conventional imaging modalities in the detection of primary and recurrent breast cancer.  It is mainly used in cases that are difficult to evaluate with mammography or ultrasound, or where there are conflicting findings between these two modalities.  MRI also allows early diagnosis of primary and recurrent breast cancer in high-risk patients.
chasefortier

Inventor of the Week: Archive - 0 views

  • Experimenting on rats, Damadian discovered dramatic differences in the quality and duration of NMR signals emitted by cancerous versus healthy tissues that confirmed his idea of the MR body scanner.
  • Finally, in 1977, Damadian's team produced the first MRI scan of the human body, using a prototype device he called "Indomitable" (now installed in the Smithsonian Institution).
  • The first MRI scan provided a clear image of the heart, lungs and chest wall with no side effects. Today, MRI scanners can instantly map and analyze any part of the human body in minute detail, allowing visual diagnosis of virtually any medical condition, from strained muscles to tumors. They can also provide the chemical composition of the tissue being scanned.
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  • Later the company developed the first FDA-approved, first mobile, and first whole-body MR scanners. FONAR's patented Iron Circuit™ technology has enabled the company to develop seven different MRI products including the recently cleared-for-marketing FONAR 360°, a full-size room with two circular structures (the poles of the magnet) projecting from the ceiling and the floor. There are no obstructions between the patient and the walls of the scanner room, and the patient is accessible from any direction. Damadian is also working on the Stand-Up MRI™, the only scanner that allows MRI patients to be scanned while standing up.
franklind2015

Video: Can I Eat That? | Watch NOVA scienceNOW Online | PBS Video - 0 views

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    Brining turkey in salt water allows more water to to go into the turkey by osmosis which mean there will be more water left after cooking making it more juicy. Heat breaks up bonds in the proteins of muscle(meat) the amino acids react with sugars to form molecules that give the meat flavor and color. (Myard Reaction) Cutting onions cause reactions that create an aroma.
charlottecr

Hazardous Products: Toys - 0 views

  • POISONING HAZARDS
  • ASPIRATION HAZARDS
  • Lead-based paint is a major source of lead poisoning for children. In children, lead poisoning can cause irreversible brain damage and can impair mental functioning. Blood-lead level as low as 10 μg/dl (micrograms per deciliter) have been associated with learning disabilities, growth impairment, permanent hearing and visual impairment and other damage to the brain and nervous system.
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  • maximum allowable lead level of 0.06% by wt. of dried paint.
  • Mercury filled necklaces have recently surfaced as a potential health hazard. These necklaces are being made in Mexico and are being pu
  • ues from Taiwan have tested as high as 81% Toluene. A product containing 10% Toluene is classified as a Hazardous Substance. These products consist of Mexican, Chinese as well as other foreign made products.
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    Different Hazardous possible in Toys
marthamck

colored pills - 0 views

shared by marthamck on 03 Jun 14 - No Cached
hmyers96

HowStuffWorks "How Nuclear Fusion Reactors Work" - 0 views

  • Deuterium-deuterium fusion requires higher temperatures that may be possible in the future. Ultimately, deuterium-deuterium fusion will be better because it is easier to extract deuterium from seawater than to make tritium from lithium. Also, deuterium is not radioactive, and deuterium-deuterium reactions will yield more energy
emfennelly

HowStuffWorks "Photovolatic Cells: Converting Photons to Electrons" - 0 views

  • Photovoltaic cells are made of special materials called semiconductors such as silicon,
  • when light strikes the cell, a certain portion of it is absorbed within the semiconductor material. This means that the energy of the absorbed light is transferred to the semiconductor. The energy knocks electrons loose, allowing them to flow freely.
charlottecr

phthalates-infographic.png (480×420) - 0 views

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