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Cross These Dangerous Toys Off Kids' Christmas List, Experts Say - 0 views

consumer.healthday.com/...kid-this-christmas-682555.html toxic
shared by charlottecr on 28 May 14 - No Cached
  • toxic levels of lead, cadmium, antimony and phthalates, said this year's "Trouble in Toyland" report from the U.S. Public Interest Research Group (PIRG).
  • f antimony, a toxic metal that has been classified as a cancer-causing agent.
  • Phthalates are chemicals suspected to cause developmental health effects. Cadmium is a toxic metal that can cause learning disabilities and kidney problems.
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HowStuffWorks "How MRI Works" - 1 views

science.howstuffworks.com/mri.htm AP APCHEM MRI
shared by chasefortier on 28 May 14 - No Cached
  • An MRI scan is the best way to see inside the human body without cutting it open.
  • Doctors may order MRI scans to help diagnose multiple sclerosis, brain tumors, torn ligaments, tendonitis, cancer and strokes,
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Magnetic resonance imaging - 0 views

www.cancer.org/...imaging-radiology-tests-mri APCHEM MRI
shared by chasefortier on 28 May 14 - No Cached
  • MRI is very good at finding and pinpointing some cancers. An MRI with contrast dye is the best way to see brain tumors. Using MRI, doctors can sometimes tell if a tumor is benign (not cancer) or malignant (cancer).
  • Special MRI machines, now available in some hospitals, are designed just for looking inside the breast.
  • 45 and 60 minutes and sometimes up to 2 hours
  • chasefortier on 28 May 14
     
    cancer detection with the MRI
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Cadmium Exposure and Human Health - 0 views

www.cadmium.org/pg_n.php Cadmium
shared by charlottecr on 27 May 14 - No Cached
  • Humans normally absorb cadmium into the body either by ingestion or inhalation Dermal exposure (uptake through the skin) is generally not regarded to be of significance
  • 2% to 6% of the cadmium ingested is actually taken up into the body. Factors influencing cadmium absorption are the form in which cadmium is present in the food, and the iron status of the exposed individual. In contrast, from 30% to 64% of inhaled cadmium is absorbed by the body, with some variation as a function of chemical form, solubility and particle size of the material inhaled.
  • a greater proportion of inhaled cadmium is retained by the body than when cadmium is taken in by ingestion.
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  • Cadmium is known to accumulate in the human kidney for a relatively long time, from 20 to 30 years, and, at high doses, is also known to produce health effects on the respiratory system and has been associated with bone disease.
  • charlottecr on 27 May 14
     
    effects of cadmium on human health
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Nuclear fusion hits energy milestone - Technology & Science - CBC News - 0 views

www.cbc.ca/...its-energy-milestone-1.2534140 APchem
shared by claireb27 on 27 May 14 - No Cached
  • For the first time, fuel for a nuclear fusion reaction has generated more energy than put into it – a scientific milestone.
  • Deuterium and tritium were coated inside the capsule at the centre of this photo
  • However, he was quick to point out that because the fuel absorbed only a small amount of the energy from the lasers, there is still far more energy put into the entire process than comes out.
  • claireb27 on 27 May 14
     
    more input than output
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Trouble in Toyland 2013 | U.S. PIRG Education Fund - 0 views

www.uspirgedfund.org/...trouble-toyland-2013 toys
shared by charlottecr on 28 May 14 - No Cached
  • Lead Continues to be a Hazard in Toys
  • Other Toxics in Toys
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USPIRG | Toy Safety Tips - U.S. PIRG Education Fund - 0 views

secure3.convio.net/...SPageServer toys
shared by charlottecr on 28 May 14 - No Cached
  • charlottecr on 28 May 14
     
    toys tips pages
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Neurons, Synapses, Action Potentials, and Neurotransmission - The Mind Project - 0 views

www.mind.ilstu.edu/...neurons_intro.php APCHEM neurons neurotransmitters neurotransmission
shared by nkuzio on 29 May 14 - Cached
  • nkuzio on 29 May 14
     
    animation of neurotransmission process
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Course Information Technology: How MRI Changed the World - 0 views

wzheng1.blogspot.com/...-revolutionized-world-and.html APCHEM MRI
shared by chasefortier on 29 May 14 - No Cached
  • MRI, has improved findings of malignant diseases and saved thousands of lives.
  • It has made early diagnosing of certain diseases possible.
  • especially useful in neurological (brain), musculoskeletal, cardiovascular, and oncological (cancer) imaging.
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  • Damadian's invention came from his observations that the tissue in a cancerous tumor looked differently than healthy tissue, after both tissue samples had been exposed to nuclear magnetic resonance.
  • first MRI examination was performed on July 3, 1977
  • first commercially available MRI was sold in 1980
  • MRI was originally a technique that was referred to as nuclear magnetic resonance imaging (NMRI). However, because the word nuclear was associated in the public mind with ionizing radiation exposure, it is generally now referred to simply as MRI.
  • In a recent study that compared radiography and MRI, MRI demonstrated significantly more erosions than radiography.” (Mak & Hunter, 2009).  MRI has particular advantages in that it is non-invasive, using non-ionizing radiation, and has a high soft-tissue resolution and discrimination in any imaging plane. It may also provide both morphological and functional information.
  • Without this ability, it would be a challenge for physicians to diagnose the correct illness. Instead, to understand what exactly is going on inside the patient, the physicians might have to surgically open the patient.
  • MRI scans have provided valuable images, two dimensional and three dimensional, that aid physicians when they diagnose diseases or problems.
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Chemical synapse - Knowledge Encyclopedia - 0 views

www.chemistryexplained.com/...Chemical_synapse.html synapse neurotransmitters APCHEM neuroscience
shared by nkuzio on 29 May 14 - No Cached
  • The adult human brain is estimated to contain from 1014 to 5 × 1014 (100–500 trillion) synapses. Every cubic millimeter of cerebral cortex contains roughly a billion of them.
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Neurotransmitters - Chemistry Encyclopedia - structure, proteins, molecule, General Mec... - 0 views

www.chemistryexplained.com/...Neurotransmitters.html neuroscience neurotransmitters APCHEM
shared by nkuzio on 29 May 14 - No Cached
  • Neurotransmitters are formed in a presynaptic neuron and stored in small membrane-bound sacks, called vesicles , inside this neuron. When this neuron is activated, these intracellular vesicles fuse with the cell membrane and release their contents into the synapse, a process called exocytosis.
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What is kitchen chemistry? video - 0 views

www.youtube.com/watch video reactions APCHEM
shared by franklind2015 on 29 May 14 - No Cached
  • franklind2015 on 29 May 14
     
    Yeast Reactions, Reactions with enzymes and proteins to cause changes in color, odor and taste.
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HowStuffWorks "How Plastics Work" - 0 views

science.howstuffworks.com/plastic.htm plastics
shared by icam45 on 29 May 14 - Cached
  • They're large molecules called polymers, which are composed of repeating units of shorter carbon-containing compounds called monomers
  • Most plastic is chemically
  • it doesn't decay. Therefore, plastic disposal poses a difficult and significant environmental problem
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