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  2. Isobar (nuclide) - Wikipedia

    en.wikipedia.org/wiki/Isobar_(nuclide)

    Isobars are atoms of different chemical elements that have the same number of nucleons. Correspondingly, isobars differ in atomic number (or number of protons) but have the same mass number. An example of a series of isobars is 40 S, 40 Cl, 40 Ar, 40 K, and 40 Ca. While the nuclei of these nuclides all contain 40 nucleons, they contain varying ...

  3. Beta-decay stable isobars - Wikipedia

    en.wikipedia.org/wiki/Beta-decay_stable_isobars

    Beta decay generally causes nuclides to decay toward the isobar with the lowest mass (which is often, but not always, the one with highest binding energy) with the same mass number. Those with lower atomic number and higher neutron number than the minimum-mass isobar undergo beta-minus decay , while those with higher atomic number and lower ...

  4. Isobar - Wikipedia

    en.wikipedia.org/wiki/Isobar

    Isobar may refer to: Isobar (meteorology), a line connecting points of equal atmospheric pressure reduced to sea level on the maps. Isobaric process, a process taking place at constant pressure; Isobar (nuclide), one of multiple nuclides with the same mass but with different numbers of protons (or, equivalently, different numbers of neutrons).

  5. Mattauch isobar rule - Wikipedia

    en.wikipedia.org/wiki/Mattauch_isobar_rule

    The Mattauch isobar rule, formulated by Josef Mattauch in 1934, states that if two adjacent elements on the periodic table have isotopes of the same mass number, one of the isotopes must be radioactive. [1] [2] Two nuclides that have the same mass number can both be stable only if their atomic numbers differ by more than one.

  6. Baroclinity - Wikipedia

    en.wikipedia.org/wiki/Baroclinity

    Baroclinic instability is a fluid dynamical instability of fundamental importance in the atmosphere and in the oceans.In the atmosphere it is the principal mechanism shaping the cyclones and anticyclones that dominate weather in mid-latitudes.

  7. Laboratory quality control - Wikipedia

    en.wikipedia.org/wiki/Laboratory_quality_control

    The distance from the mean is measured in standard deviations. It is named after Stanley Levey and E. R. Jennings, pathologists who suggested in 1950 that Shewhart's individuals control chart could be used in the clinical laboratory. [5] The date and time, or more often the number of the control run, is plotted on the x-axis.

  8. Oil clean-up 'scam' warnings ignored by Shell, whistle-blower ...

    www.aol.com/news/oil-clean-scam-warnings-ignored...

    Laboratory results being falsified - sometimes labelling contaminated soil and water as clean Project costs being inflated External auditors on occasion being blocked from checking the clean-up on ...

  9. Analysis of water chemistry - Wikipedia

    en.wikipedia.org/wiki/Analysis_of_water_chemistry

    An EPA scientist samples water in Florida Everglades. Samples of water from the natural environment are routinely taken and analyzed as part of a pre-determined monitoring program by regulatory authorities to ensure that waters remain unpolluted, or if polluted, that the levels of pollution are not increasing or are falling in line with an agreed remediation plan.