DiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and Processes
Potassium IsotopesPotassiumIsotopesIsotope LabelingPotassium ChannelsNitrogen IsotopesOxygen IsotopesCarbon IsotopesPotassium Channel BlockersPotassium Channels, Inwardly RectifyingPotassium, DietaryPotassium DeficiencyPotassium Channels, Voltage-GatedPotassium CompoundsZinc IsotopesSulfur IsotopesDeuteriumPotassium ChlorideIron IsotopesShaker Superfamily of Potassium ChannelsPotassium RadioisotopesKv1.3 Potassium ChannelPotassium IodideSodiumStrontium IsotopesMembrane PotentialsKv1.2 Potassium Channel
Protons and neutronsGeochemistryNeutron richUraniumRadiogenicDilutionRadioactive iodineIodideRubidiumNeutronsForm of potassiumStable potassiumUnstableRatiosNaturallySodiumDecay2016IsotopicRadiationPalmitateChlorideCompositionCesium 137ConstraintsZincMineralsArgonMeteoritesUptakeMeasurementsNuclearFractionElementElementsAtomicBiologicalChemicalPreciseDifferencesDecreaseRocksMajorCharge
Protons and neutrons1
  • For those of you who need a quick review, isotopes of an element are produced because of differences in the numbers of protons and neutrons in the nucleus. (skepchick.org)
Geochemistry3
  • The book I selected was Geochemistry of Non-traditional Stable Isotopes , a fascinating little volume that I imagine I'll read cover-to-cover before the year's end. (skepchick.org)
  • I started reading Geochemistry of Non-Traditional Stable Isotopes for my research paper on lithium isotopes, but I've found myself reading bits and pieces of the other sections of the book as well. (skepchick.org)
  • This little book on stable isotopes is opening my eyes to how recent developments mass spectrometry are revolutionizing isotope geochemistry. (skepchick.org)
Neutron rich2
  • Production of very neutron rich isotopes: What should we know? (wikipedia.org)
  • Measurements of neutron-rich potassium isotopes cast doubt on the new N = 32 magic number below calcium. (iop.org)
Uranium5
  • Spectral gamma borehole geophysical methods measure natural-gamma energy spectra, which are caused by the decay of uranium, thorium, potassium-40, and anthropogenic radioactive isotopes. (usgs.gov)
  • Background radioactivity - radioactive elements in the natural environment including those in the crust of the earth (like radioactive potassium, uranium, and thorium isotopes) and those produced by cosmic rays. (cdc.gov)
  • The study of radioactive isotope systems, such as potassium-argon and uranium-thorium, can also be used in the dating of rocks and archaeological samples. (skepchick.org)
  • In its elementary state uranium is only weakly radioactive due to its unstable isotopes, which vary naturally. (euradcom.org)
  • The gas can then be enriched to make it concentrated in uranium isotope 235, the isotope most needed for nuclear power. (euradcom.org)
Radiogenic2
  • Minerals are dated by measurement of the concentration of potassium and the amount of radiogenic 40 Ar that has accumulated. (wikipedia.org)
  • Radiogenic isotope studies of inclusions in combination with compositional data can constrain the conditions and timing of diamond growth, and provide fundamental information about the tectono-magmatic processes that led to the formation and modification of the lithospheric keels that underlie the oldest parts of the Earth's continents 1 . (nature.com)
Dilution3
  • For assessing the folate content in a range of Brazilian PANCs, we extended the validation of an existing stable isotope dilution assay (SIDA) for the stably 13 C-labelled 10-formyl-Pte[ 13 C 5 ]Glu (10-CHO-Pte[ 13 C 5 ]Glu). (frontiersin.org)
  • The DAP metabolites were quantified using isotope- dilution calibration. (cdc.gov)
  • Determination of 3-quinuclidinyl benzilate (QNB) and its major metabolites in urine by isotope dilution gas chromatography/mass spectrometry. (cdc.gov)
Radioactive iodine3
  • Potassium Iodide helps protect your thyroid gland from radioactive iodine, in case of a nuclear accident. (life-enthusiast.com)
  • Potassium iodide (also called KI) is a salt of stable (not radioactive) iodine. (life-enthusiast.com)
  • In addition to radioactive iodine, the body may also be exposed to a radioactive isotope of caesium known as Cesium-137 . (lewrockwell.com)
Iodide7
Rubidium1
  • CAL can trap three types of atoms for scientists to study - rubidium and two isotopes of potassium - cooling them to near-immobility in seconds and holding them in magnetic traps for observation by scientists back on Earth. (livescience.com)
Neutrons4
  • Merrihue, C. and Turner, G. Potassium-argon dating by activation with fast neutrons. (ucl.ac.uk)
  • Isotopes of an element have different numbers of neutrons from each other. (space.com)
  • Isotopes are versions of an element that contain different numbers of neutrons in their atomic nuclei. (livescience.com)
  • Alpha particle ( ionizing radiation ) - two neutrons and two protons bound as a single particle (a helium nucleus) that is emitted from the nucleus of certain radioactive isotopes in the process of disintegration. (cdc.gov)
Form of potassium2
  • Potassium Orotate is the best form of potassium to use for radiation exposure. (lewrockwell.com)
  • Over time, atoms of the radioactive form of potassium -- an isotope called potassium-40 -- will decay within a rock to spontaneously form stable atoms of argon-40. (sciencedaily.com)
Stable potassium2
Unstable4
  • The principles essential to the interpretation of gamma, gamma-spectrometry, gamma-gamma, and various types of neutron logs include the nature of subatomic particles and the particles and photons emitted by unstable isotopes. (usgs.gov)
  • Unstable or radioactive isotopes (also called radioisotopes) change structure and emit radiation spontaneously as they decay, and become different isotopes. (usgs.gov)
  • 1,130 of these are unstable, although only 65 unstable isotopes occur naturally. (usgs.gov)
  • Beta particle ( ionizing radiation ) - a charged particle emitted from the nucleus of certain unstable atomic nuclei (radioactive isotopes), having the charge and mass of an electron. (cdc.gov)
Ratios3
  • Each of these models leads to a different prediction for potassium isotope ratios in lunar and terrestrial rocks (right). (space.com)
  • Studying ratios of both stable and radioactive isotopes can provide important constraints on these processes. (skepchick.org)
  • Basically, a mass spectrometer uses electric and magnetic fields to separate isotopes and measure their ratios and concentrations. (skepchick.org)
Naturally3
  • Potassium ( 19K) has 26 known isotopes from 31 K to 57 K, with the exception of still-unknown 32 K, as well as an unconfirmed report of 59 K. Three of those isotopes occur naturally: the two stable forms 39 K (93.3%) and 41 K (6.7%), and a very long-lived radioisotope 40 K (0.012%) Naturally occurring radioactive 40 K decays with a half-life of 1.248×109 years. (wikipedia.org)
  • Potassium-40 ($^{40}$K) is a naturally-occurring, radioactive isotope of interest to rare-event searches as a challenging background. (cern.ch)
  • While researching 'natural sources of antimatter,' I discovered a curious article about a naturally occurring potassium isotope that, some fraction of the time, decays via positron emission. (quantumdiaries.org)
Sodium4
  • Initially, her lab focused on regulation of the biosynthesis and assembly of sodium pump subunits and molecular mechanisms controlling sodium pump isoforms in kidney, cardiac and skeletal muscle by potassium, hormones, and other factors under normal conditions and during human heart failure. (usc.edu)
  • The McDonough laboratory has especially focused on renal mechanisms responsible for regulation of sodium and potassium balance as well as blood pressure. (usc.edu)
  • These projects have engaged the McDonough lab with expert collaborators across the USA and around the world and attracted attention to the important role of the kidney in balancing the intertwined homeostasis of sodium, potassium and blood pressure. (usc.edu)
  • Yes, sodium-free salt (potassium chloride) is sufficiently radioactive (from the isotope potassium-40) that after several months, a saltshaker-ful will form an image on film. (popsci.com)
Decay2
  • The long half-life of this primordial radioisotope is caused by a highly spin-forbidden transition: 40 K has a nuclear spin of 4, while both of its decay daughters are even-even isotopes with spins of 0. (wikipedia.org)
  • The decay of 40 K to 40 Ar is used in potassium-argon dating of rocks. (wikipedia.org)
20161
  • However, more accurate measurements of oxygen isotopes reported in 2016 only helped confirm this problem, said study lead author Kun Wang, a geochemist now at Washington University in St. Louis. (space.com)
Isotopic1
  • Isotopes can act as geologic fingerprints, because prior work has suggested that planetary bodies that formed in different parts of the solar system generally have different isotopic compositions. (space.com)
Radiation4
  • The processes of transformation of one isotope to another may leave the resulting nucleus with an excess of energy, which may be emitted as electromagnetic radiation in the form of gamma photons or gamma rays. (usgs.gov)
  • Bananas have suddenly become the hip way to compare radiation doses because a typical banana contains the natural radioactive isotope potassium 40. (wallstreetpit.com)
  • Other foods rich in potassium like potatoes also contain radiation, but the idea of comparing radiation levels to bananas is certainly more fun. (wallstreetpit.com)
  • With a half-life of 30 years, cesium-137 gives off highly penetrating radiation and is absorbed in the food chain as if it were potassium. (ips-dc.org)
Palmitate1
Chloride1
  • 40 K occurs in natural potassium in sufficient quantity that large bags of potassium chloride commercial salt substitutes can be used as a radioactive source for classroom demonstrations. (wikipedia.org)
Composition1
  • The variability in K phase and isotope composition reflects the accumulative effect of different processes. (wustl.edu)
Cesium 1373
  • Potassium orotates can prevent the accumulation of Cesium-137. (lewrockwell.com)
  • In fact, getting enough potassium from food such as bananas is a good first step at preventing radioactive cesium 137 retention. (lewrockwell.com)
  • Particularly worrisome is the large amount of cesium-137 in fuel ponds, which contain anywhere from 20 to 50 million curies of this dangerous radioactive isotope. (ips-dc.org)
Constraints1
  • To provide constraints on how the tectono-magmatic conditions responsible for harzburgitic diamond formation may have evolved over time, and assess the possible temporal evolution of the Earth's carbon cycle, we present coupled major and trace element and Sm-Nd isotope data for 26 individual garnet inclusions extracted from 26 individual peridotitic diamonds from Venetia, which were also measured for their carbon isotope compositions. (nature.com)
Zinc1
  • This book is basically about all the new types of stable isotope systems (lithium, magnesium, zinc, selenium, et cetera) that are now able to be studied because of recent advances in mass spectrometry. (skepchick.org)
Minerals1
Argon5
  • Keith Swenson's article titled Radio-dating in Rubble in the June-August 2001 issue (pg 23-25) discussed using the Potassium-Argon method to date the rocks on Mount St. Helens. (creation.com)
  • In Dalrymple's book Potassium-Argon Dating: Principles, Techniques, and Applications to Geochronology , Dalyrmple clearly states on page 194 (end of chapter 10) that the youngest rocks that can be dated are rocks which are at least 1,000 years old. (creation.com)
  • In the case of potassium-argon dating, we want to accurately measure the relevant potassium and argon isotopes. (creation.com)
  • One technique, potassium-argon dating, determines the age of a rock sample by measuring how much argon gas it contains. (sciencedaily.com)
  • Although the potassium-argon method has been used to date rocks on Earth for many decades, these types of measurements require sophisticated lab equipment that could not easily be transported and used on another planet. (sciencedaily.com)
Meteorites1
  • For example, isotopes of elements such as potassium inside meteorites have told us where those objects formed in presolar cosmic clouds called nebulae, and variations between meteorites can be used to help determine a nebula's condition well before the emergence of any planets. (scientificamerican.com)
Uptake1
  • This was compared with the uptake of potassium- 42 injected before nitroglycerin. (jci.org)
Measurements1
  • Under his leadership, recent CRIS science highlights include measurements of charge radii of copper isotopes that have driven the first consistent microscopic description of odd-even staggering using effective-field and density functional theory. (iop.org)
Nuclear1
  • According to the CDC, potassium can play a major role in protecting the body and thyroid gland after an internal contamination, as in the example of the Japanese nuclear reactor explosion. (lewrockwell.com)
Fraction1
  • The odd isotope fraction of Ba in r-process-enhanced (r-II) stars is also better reproduced using our new data. (bvsalud.org)
Element3
  • To see the isotopes that exist in the ScientificConstants package for a particular element, use the GetIsotopes function with the 'element' option specified. (maplesoft.com)
  • Isotopes of a given element have the same chemical characteristics but a different mass. (usgs.gov)
  • Thus, isotopes of an element have slightly different masses that can lead to small, but important, differences in the behavoir of an element. (skepchick.org)
Elements2
  • Information about number of known elements and isotopes was accurate at the time of original publication (1990). (usgs.gov)
  • Tian and her colleagues used potassium, known by the chemical symbol K, as a tracer for more "volatile" elements and compounds - stuff like water, which transitions to the gas phase at relatively low temperatures. (livescience.com)
Atomic1
  • The cards can be used to illustrate several major concepts including families and periods, atomic number and mass, electron shells, and isotopes. (schoolspecialty.com)
Biological1
  • Scientists will be able to learn so much more about paleoclimate, volcanology, ocean circulation, biological cycles, et cetera from studying these isotopes. (skepchick.org)
Chemical1
  • In 2001, scientists began discovering that terrestrial and lunar rocks had a lot in common: the two bodies possess many of the same chemical isotopes . (space.com)
Precise1
  • Gross beta isn't the most precise measure, but it is indicative of other isotopes that are documented from Fukushima. (counterpunch.org)
Differences1
Decrease1
  • Intravenous or intracoronary administration of nitroglycerin caused a significant reduction in subendocardial blood flow with a decrease in the subendocardial/subepicardial ratio of isotope. (jci.org)
Rocks1
  • The researchers measured the abundance of various isotopes of potassium in these extraterrestrial rocks, which ranged in age from 200 million years to four billion years. (livescience.com)
Major1
  • This graph shows the total number of publications written about "Potassium Isotopes" by people in this website by year, and whether "Potassium Isotopes" was a major or minor topic of these publications. (umassmed.edu)
Charge2
  • At the Isotope Separator and Accelerator (ISAC) facility of TRIUMF, an Electron Cyclotron Resonance Ion Source is used to charge breed radioactive ion beams before injection into the linear accelerator for post acceleration. (cern.ch)
  • The so-called Charge State Booster (CSB) has been used to charge breed radioactive isotopes ranging from potassium to erbium under the regime of single frequency heating. (cern.ch)