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  2. Standard penetration test - Wikipedia

    en.wikipedia.org/wiki/Standard_penetration_test

    The standard penetration test (SPT) is an in-situ dynamic penetration test designed to provide information on the geotechnical engineering properties of soil. This test is the most frequently used subsurface exploration drilling test performed worldwide. The test procedure is described in ISO 22476-3, ASTM D1586 [1] and Australian Standards AS ...

  3. Symmetry-protected topological order - Wikipedia

    en.wikipedia.org/wiki/Symmetry-protected...

    Symmetry-protected topological (SPT) order [1] [2] is a kind of order in zero-temperature quantum-mechanical states of matter that have a symmetry and a finite energy gap.. To derive the results in a most-invariant way, renormalization group methods are used (leading to equivalence classes corresponding to certain fixed points). [1]

  4. List of abbreviations in oil and gas exploration and production

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    SPT – shallower pool test, Lahee classification [citation needed] SPUD – spud date (started drilling well) SPWLA – Society of Petrophysicists and Well Log Analysts [29] SQL – seismic quicklook log; SQZ – squeeze job; SR – shear rate

  5. The Male G Spot Is Real—and It's the Secret to an ... - AOL

    www.aol.com/male-g-spot-real-secret-163400301.html

    The prostate, a.k.a. the "male G-spot," can produce mind-blowing orgasms. Sex experts explain where it is, how to stimulate it, and more.

  6. Geotechnical investigation - Wikipedia

    en.wikipedia.org/wiki/Geotechnical_investigation

    A USBR soil scientist advances a Giddings Probe direct push soil sampler.. Geotechnical investigations are performed by geotechnical engineers or engineering geologists to obtain information on the physical properties of soil earthworks and foundations for proposed structures and for repair of distress to earthworks and structures caused by subsurface conditions; this type of investigation is ...

  7. Honda RC51 - Wikipedia

    en.wikipedia.org/wiki/Honda_RC51

    The 2000–2001 models are designated SP1, while the 2002–2006 models are designated SP2 (the latter having updated fuel injection and suspension systems). 1988–2002 In 1988, new rules in superbike racing allowed V-twin engines up to 999 cc to compete. Prior to the rules change, 750 cc four-cylinder motorcycles were the dominant force in ...

  8. Standard temperature and pressure - Wikipedia

    en.wikipedia.org/wiki/Standard_temperature_and...

    Since 1982, STP has been defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 1 bar (100 kPa, 10 5 Pa). NIST uses a temperature of 20 °C (293.15 K, 68 °F) and an absolute pressure of 1 atm (14.696 psi, 101.325 kPa). [3] This standard is also called normal temperature and pressure (abbreviated as NTP).

  9. List of Colt AR-15 and M16 rifle variants - Wikipedia

    en.wikipedia.org/wiki/List_of_Colt_AR-15_and_M16...

    ArmaLite AR-15 with the charging handle located on top of the upper receiver, protected within the carrying handle and a 25-round magazine. 1973 Colt AR-15 SP1 rifle with "slab side" lower receiver (lacking raised boss around magazine release button) and original Colt 20-round magazine.