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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. Academic grading in the United States - Wikipedia

    en.wikipedia.org/wiki/Academic_grading_in_the...

    Papua New Guinea. v. t. e. In the United States, academic grading commonly takes on the form of five, six or seven letter grades. Traditionally, the grades are A+, A, A−, B+, B, B−, C+, C, C−, D+, D, D− and F, with A+ being the highest and F being lowest. In some cases, grades can also be numerical. Numeric-to-letter-grade conversions ...

  4. 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 ...

  5. Registration, Evaluation, Authorisation and Restriction of ...

    en.wikipedia.org/wiki/Registration,_Evaluation...

    C294, 25.11.2005, pp. 38–44. Registration, Evaluation, Authorisation and Restriction of Chemicals ( REACH) is a European Union regulation dating from 18 December 2006. [1] REACH addresses the production and use of chemical substances, and their potential impacts on both human health and the environment. Its 849 pages took seven years to pass ...

  6. Employment and Support Allowance - Wikipedia

    en.wikipedia.org/wiki/Employment_and_Support...

    Employment and Support Allowance. Employment and Support Allowance ( ESA) is a United Kingdom welfare payment for adults younger than the State Pension age who are having difficulty finding work because of their long-term medical condition or a disability. It is a basic income-replacement benefit paid in lieu of wages.

  7. List of countries by Human Development Index - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_Human...

    The Human Development Report includes data for all 193 member states of the United Nations, [16] as well as Hong Kong SAR and the State of Palestine. However, the Human Development Index is not calculated for two UN member states: DPR Korea (North Korea) and Monaco, only some components of the index are calculated for these two countries.

  8. 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 ...

  9. Health Insurance Portability and Accountability Act - Wikipedia

    en.wikipedia.org/wiki/Health_Insurance...

    The Health Insurance Portability and Accountability Act of 1996 ( HIPAA or the Kennedy – Kassebaum Act [1] [2]) is a United States Act of Congress enacted by the 104th United States Congress and signed into law by President Bill Clinton on August 21, 1996. [3] It aimed to alter the transfer of healthcare information, stipulated the guidelines ...