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  2. Spot analysis - Wikipedia

    en.wikipedia.org/wiki/Spot_analysis

    Spot analysis, spot test analysis, or spot test is a chemical test, a simple and efficient technique where analytic assays are executed in only one, or a few drops, of a chemical solution, preferably in a great piece of filter paper, without using any sophisticated instrumentation. The development and popularization of the test is credited to ...

  3. Spot test (lichen) - Wikipedia

    en.wikipedia.org/wiki/Spot_test_(lichen)

    A spot test in lichenology is a spot analysis used to help identify lichens. It is performed by placing a drop of a chemical reagent on different parts of the lichen and noting the colour change (or lack thereof) associated with application of the chemical. The tests are routinely encountered in dichotomous keys for lichen species, and they ...

  4. ELISpot - Wikipedia

    en.wikipedia.org/wiki/ELISpot

    The enzyme-linked immunosorbent spot (ELISpot) is a type of assay that focuses on quantitatively measuring the frequency of cytokine secretion for a single cell. The ELISpot Assay is also a form of immunostaining since it is classified as a technique that uses antibodies to detect a protein analyte, with the word analyte referring to any biological or chemical substance being identified or ...

  5. Arago spot - Wikipedia

    en.wikipedia.org/wiki/Arago_spot

    Notation for calculating the wave amplitude at point P 1 from a spherical point source at P 0.. At the heart of Fresnel's wave theory is the Huygens–Fresnel principle, which states that every unobstructed point of a wavefront becomes the source of a secondary spherical wavelet and that the amplitude of the optical field E at a point on the screen is given by the superposition of all those ...

  6. How to lower or eliminate your risk of knee arthritis ...

    www.aol.com/strong-leg-muscles-could-help...

    So take a walk, do some wall sits, or sit in a chair and stand up 10 times without using your arms to push yourself up, Miller said. Just keep moving. “Our rule for osteoarthritis patients is ...

  7. Are you dreading retirement? Here are 3 money tips for ... - AOL

    www.aol.com/finance/dreading-retirement-3-money...

    While you become eligible for your first check at 62, in the eyes of the Social Security Administration, your full retirement age (FRA) is between ages 66 and 67, depending on when you were born.

  8. White-box testing - Wikipedia

    en.wikipedia.org/wiki/White-box_testing

    t. e. White-box testing (also known as clear box testing, glass box testing, transparent box testing, and structural testing) is a method of software testing that tests internal structures or workings of an application, as opposed to its functionality (i.e. black-box testing ). In white-box testing, an internal perspective of the system is used ...

  9. Dried blood spot - Wikipedia

    en.wikipedia.org/wiki/Dried_blood_spot

    Dried blood spot. Dried blood spot testing (DBS) is a form of biosampling where blood samples are blotted and dried on filter paper. The dried samples can easily be shipped to an analytical laboratory and analysed using various methods such as DNA amplification or high-performance liquid chromatography. [citation needed]

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