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  2. E/A ratio - Wikipedia

    en.wikipedia.org/wiki/E/A_ratio

    E/A ratio. The E/A ratio is a marker of the function of the left ventricle of the heart. It represents the ratio of peak velocity blood flow from left ventricular relaxation in early diastole (the E wave) to peak velocity flow in late diastole caused by atrial contraction (the A wave). [1] It is calculated using Doppler echocardiography, an ...

  3. List of EIA standards - Wikipedia

    en.wikipedia.org/wiki/List_of_EIA_standards

    500–599. EIA-535 Fixed Tantalum Capacitors. TIA-568 cable wiring standard for structured cabling (Commercial Building Telecommunications Cabling Standard) EIA/TIA-569 Commercial Building Standard for Telecommunications Pathways and Spaces. EIA/TIA-570 Residential and Light Commercial Telecommunications Wiring Standard.

  4. List of guitar tunings - Wikipedia

    en.wikipedia.org/wiki/List_of_guitar_tunings

    Standard – E-A-d-g-b The standard tuning, without the top E string attached. Alternative variants are easy from this tuning, but because several chords inherently omit the lowest string, it may leave some chords relatively thin or incomplete with the top string missing (the D chord, for instance, must be fretted 5-4-3-2-3 to include F#, the ...

  5. Guitar tunings - Wikipedia

    en.wikipedia.org/wiki/Guitar_tunings

    Standard tuning (listen) Guitar tunings are the assignment of pitches to the open strings of guitars, including classical guitars, acoustic guitars, and electric guitars. Tunings are described by the particular pitches that are made by notes in Western music. By convention, the notes are ordered and arranged from the lowest-pitched string (i.e ...

  6. B tuning - Wikipedia

    en.wikipedia.org/wiki/B_tuning

    B tuning. B Tuning or B Standard Tuning is the standard tuning for a seven string guitar, where the strings are tuned B-E-A-D-G-B-E. B tuning can also be achieved on a six-string guitar, when the strings are tuned B-E-A-D-F♯-B, known then as Baritone Tuning. This tuning is popular among several different types of metal bands.

  7. Standard tuning - Wikipedia

    en.wikipedia.org/wiki/Standard_tuning

    Guitar standard tuning (written an octave higher than it sounds). D/F♯ slash chord Play ⓘ. Guitars and bass guitars have more standard tunings, depending on the number of strings an instrument has. six-string guitar (the most common configuration) – E 2 A 2 D 3 G 3 B 3 E 4 (ascending perfect fourths, with an exception between G and B ...

  8. Phase I environmental site assessment - Wikipedia

    en.wikipedia.org/wiki/Phase_I_environmental_site...

    Standards for performing a Phase I site assessment have been promulgated by the US EPA and are based in part on ASTM in Standard E1527-13. [2] If a site is considered contaminated, a Phase II environmental site assessment may be conducted, ASTM test E1903, a more detailed investigation involving chemical analysis for hazardous substances and/or ...

  9. IEEE Standards Association - Wikipedia

    en.wikipedia.org/wiki/IEEE_Standards_Association

    The Institute of Electrical and Electronics Engineers Standards Association (IEEE SA) is an operating unit within IEEE that develops global standards in a broad range of industries, including: power and energy, artificial intelligence systems, internet of things, consumer technology and consumer electronics, biomedical and health care, learning technology, information technology and robotics ...

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