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  2. Cone penetration test - Wikipedia

    en.wikipedia.org/wiki/Cone_penetration_test

    A CPT truck operated by the USGS. Symbol used in drawings Simplified version of a cone penetrometer.. The cone penetration or cone penetrometer test (CPT) is a method used to determine the geotechnical engineering properties of soils and delineating soil stratigraphy.

  3. Büchner funnel - Wikipedia

    en.wikipedia.org/wiki/Büchner_funnel

    It is commonly thought to be named after the Nobel Laureate Eduard Buchner (without umlaut), but it is actually named after the industrial chemist Ernst Büchner. [2] A Büchner funnel fitted with Sintered Disc made of Boro 3.3 Glass. Diagram of filtration set-up using a Büchner flask

  4. Berlese funnel - Wikipedia

    en.wikipedia.org/wiki/Berlese_funnel

    A funnel (E) contains a sample of soil or leaf litter (D), and a heat source (F), in this case an electric lamp (G), heats the sample. Animals escaping from the desiccation of the sample descend through a filter (C) into a preservative liquid (A) in a receptacle (B).

  5. Soil moisture sensor - Wikipedia

    en.wikipedia.org/wiki/Soil_moisture_sensor

    A simple soil moisture sensor for gardeners. Soil moisture sensors measure the volumetric water content in soil. [1] Since the direct gravimetric measurement of free soil moisture requires removing, drying, and weighing of a sample, soil moisture sensors measure the volumetric water content indirectly by using some other property of the soil, such as electrical resistance, dielectric constant ...

  6. Buchner ring expansion - Wikipedia

    en.wikipedia.org/wiki/Buchner_ring_expansion

    The Buchner ring expansion is a two-step organic C-C bond forming reaction used to access 7-membered rings. The first step involves formation of a carbene from ethyl diazoacetate , which cyclopropanates an aromatic ring.

  7. Mud tank - Wikipedia

    en.wikipedia.org/wiki/Mud_tank

    Mud tanks play an important role in a solids control system.It is the base of solids control equipment, and also the carrier of drilling fluids.Solids control equipment that are all mounted on the top of mud tanks include the following:

  8. Ludwig Büchner - Wikipedia

    en.wikipedia.org/wiki/Ludwig_Büchner

    Büchner was born at Darmstadt on 29 March 1824. From 1842 to 1848 he studied physics, chemistry, botany, mineralogy, philosophy and medicine at the University of Giessen, where he graduated in 1848 with a dissertation entitled Beiträge zur Hall'schen Lehre von einem excitomotorischen Nervensystem (Contributions to the Hallerian Theory of an Excitomotor Nervous System).

  9. Paul Buchner - Wikipedia

    en.wikipedia.org/wiki/Paul_Buchner

    Paul Buchner (June 1531 – 13 November 1607) was a German architect, geometer, carpenter and screw maker from Nuremberg. Life. Dresden Portal Schlossgasse of the ...