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  • heaviest
  • This period contains technetium, one of the two elements until lead that has no stable isotopes (along with promethium), as well as molybdenum and iodine, two of the heaviest elements with a known biological role, and Niobium has the largest magnetic known penetration depth of all the elements. (wikipedia.org)
  • decay
  • Due to its mode of beta decay, iodine-131 is notable for causing mutation and death in cells that it penetrates, and other cells up to several millimeters away. (wikipedia.org)
  • Its decay is the basis of the I-Xe iodine-xenon radiometric dating scheme, which covers the first 85 million years of solar system evolution. (wikipedia.org)
  • Thereafter, the irradiated gas is allowed to decay for three or four days to dispose of short-lived unwanted isotopes, and to allow the newly created xenon-125 (half-life 17 hours) to decay to iodine-125. (wikipedia.org)
  • Iodine-129 (129I) is a long-lived radioisotope of iodine which occurs naturally, but also is of special interest in the monitoring and effects of man-made nuclear fission decay products, where it serves as both tracer and potential radiological contaminant. (wikipedia.org)
  • iodide
  • Iodine occurs in many oxidation states, including iodide (I−), iodate (IO− 3), and the various periodate anions. (wikipedia.org)
  • The inner walls of the capsule are then rinsed with dilute NaOH solution to collect iodine as soluble iodide and hypoiodite OI−, according to the standard disproportionation reaction of halogens in alkaline solutions. (wikipedia.org)
  • 125I
  • Iodine-125 (125I) is a radioisotope of iodine which has uses in biological assays, nuclear medicine imaging and in radiation therapy as brachytherapy to treat a number of conditions, including prostate cancer, uveal melanomas, and brain tumors. (wikipedia.org)
  • Iodine-125 itself has a neutron capture cross section of 900 barns, and consequently during a long irradiation, part of the 125I formed will be converted to 126I, a beta-emitter and positron-emitter with a half-life of 13.1 days, which is not medically useful. (wikipedia.org)
  • vapor
  • It was Gay-Lussac who suggested the name "iode", from the Greek word ἰοειδής (ioeidēs) for violet (because of the colour of iodine vapor). (wikipedia.org)
  • More commonly, powdered elemental tellurium is irradiated and then I-131 separated from it by dry distillation of the iodine, which has a far higher vapor pressure. (wikipedia.org)
  • isolate
  • Arguments erupted between Davy and Gay-Lussac over who identified iodine first, but both scientists acknowledged Courtois as the first to isolate the element. (wikipedia.org)
  • tissues
  • Thus, iodine-131 is increasingly less employed in small doses in medical use (especially in children), but increasingly is used only in large and maximal treatment doses, as a way of killing targeted tissues. (wikipedia.org)
  • Ethanol
  • A Prospective Comparative Study in Skin Antiseptic Solutions for Posterior Spine Surgeries: Chlorhexidine-Gluconate Ethanol Versus Povidone-Iodine. (bioportfolio.com)
  • selectively
  • Nuclear imaging is non-invasive and has high sensitivity, and nanoparticles are useful as a platform for combining multiple copies of targeting vectors and effectors in order to selectively deliver radioisotopes to a specific region of interest. (wikipedia.org)
  • doses
  • Much smaller incidental doses of iodine-131 than those used in medical therapeutic procedures, are supposed by some studies to be the major cause of increased thyroid cancers after accidental nuclear contamination. (wikipedia.org)
  • It is entirely different from radioactive iodine therapy (RAI therapy), which uses much higher doses to destroy cancerous cells. (wikipedia.org)
  • therapeutic
  • Iodine-131 can be "seen" by nuclear medicine imaging techniques (i.e., gamma cameras) whenever it is given for therapeutic use, since about 10% of its energy and radiation dose is via gamma radiation. (wikipedia.org)
  • All other iodine radioisotopes have half-lives less than 60 days, and four of these are used as tracers and therapeutic agents in medicine. (wikipedia.org)
  • acid
  • Iodine is also used as a catalyst in the industrial production of acetic acid and some polymers. (wikipedia.org)
  • radiation
  • By contrast, other iodine radioisotopes are usually created by far more expensive techniques, starting with reactor radiation of expensive capsules of pressurized xenon gas. (wikipedia.org)
  • Iodine-125 has been used in scanning/imaging the thyroid, but iodine-123 is preferred for this purpose, due to better radiation penetration and shorter half-life (13 hours). (wikipedia.org)
  • methods
  • The low-cost availability of I-131, in turn, is due to the relative ease of creating I-131 by neutron bombardment of natural tellurium in a nuclear reactor, then separating I-131 out by various simple methods (i.e., heating to drive off the volatile iodine). (wikipedia.org)
  • solution
  • The purpose of this study is to find out if chlorhexidine gluconate solution is better at reducing the rate of wound infection after cesarean section compared to povidone-iodine. (bioportfolio.com)
  • or POVIDONE-IODINE in a gel, foam, or liquid solution. (bioportfolio.com)