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  2. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    There should be no whitespace between the numeral and the letter X. (Note on character encoding: Although in typography (including Unicode) the letter X and the multiplication sign (×) are distinct characters with differing glyphs, it is a longstanding tradition in engineering drawing that the letter X is interchangeable with the multi sign ...

  3. Denver Air Connection - Wikipedia

    en.wikipedia.org/wiki/Denver_Air_Connection

    The carrier announced in January 2024 that it would start an agreement with Delta Air Lines. On 15 May 2019, the airline began service to Telluride Regional Airport also operating as Denver Air Connection and using the Fairchild Dornier 328JET. The service is the first jet service at the Telluride airport.

  4. Isothermal process - Wikipedia

    en.wikipedia.org/wiki/Isothermal_process

    Isothermal processes are of special interest for ideal gases. This is a consequence of Joule's second law which states that the internal energy of a fixed amount of an ideal gas depends only on its temperature. [4] Thus, in an isothermal process the internal energy of an ideal gas is constant. This is a result of the fact that in an ideal gas ...

  5. Einstein field equations - Wikipedia

    en.wikipedia.org/wiki/Einstein_field_equations

    v. t. e. In the general theory of relativity, the Einstein field equations ( EFE; also known as Einstein's equations) relate the geometry of spacetime to the distribution of matter within it. [1] The equations were published by Albert Einstein in 1915 in the form of a tensor equation [2] which related the local spacetime curvature (expressed by ...

  6. Inexact differential - Wikipedia

    en.wikipedia.org/wiki/Inexact_differential

    An inexact differential or imperfect differential is a differential whose integral is path dependent. It is most often used in thermodynamics to express changes in path dependent quantities such as heat and work, but is defined more generally within mathematics as a type of differential form. In contrast, an integral of an exact differential is ...

  7. Peroxisome proliferator-activated receptor delta - Wikipedia

    en.wikipedia.org/wiki/Peroxisome_proliferator...

    View/Edit Mouse. Peroxisome proliferator-activated receptor delta (PPAR-delta), or (PPAR-beta), also known as Nuclear hormone receptor 1 (NUC1) is a nuclear receptor that in humans is encoded by the PPARD gene. [5] This gene encodes a member of the peroxisome proliferator-activated receptor (PPAR) family. It was first identified in Xenopus in 1993.

  8. New Delta Review - Wikipedia

    en.wikipedia.org/wiki/New_Delta_Review

    New Delta Review. The New Delta Review is a literary magazine in the United States in print since 1984 [1] and online since 2012. The journal is published biannually with the support of Louisiana State University .

  9. Thermodynamic free energy - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_free_energy

    v. t. e. In thermodynamics, the thermodynamic free energy is one of the state functions of a thermodynamic system (the others being internal energy, enthalpy, entropy, etc.). The change in the free energy is the maximum amount of work that the system can perform in a process at constant temperature, and its sign indicates whether the process is ...