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2. Proctor compaction test - Wikipedia

   en.wikipedia.org/wiki/Proctor_compaction_test

   The Proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. The test is named in honor of Ralph Roscoe Proctor [ de ] , who in 1933 showed that the dry density of a soil for a given compactive effort depends ...

3. Casting - Wikipedia

   en.wikipedia.org/wiki/Casting

   Plaster and other chemical curing materials such as concrete and plastic resin may be cast using single-use waste molds as noted above, multiple-use 'piece' molds, or molds made of small rigid pieces or of flexible material such as latex rubber (which is in turn supported by an exterior mold). When casting plaster or concrete, the material ...

4. List of Historic Mechanical Engineering Landmarks - Wikipedia

   en.wikipedia.org/wiki/List_of_Historic...

   Sole surviving engine-generator set marking the beginning of large-scale electric power generation in the United States. 1891 Dearborn: Michigan United States No ASME brochure available. 50: 1980 Cooperative Fuel Research Engine Pioneer variable-compression laboratory engine for testing fuels. 1928 Waukesha: Wisconsin United States ASME ...

5. Conservation and restoration of parchment - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   Analytical testing, which involves removing a small piece of parchment, can be done by or under the supervision of a professional conservator-restorer to ensure positive identification. One type of analytical testing involves examining the parchment specimen under a light microscope or scanning electron microscopy. A simple flame test can also ...

6. Industrial Bio-Test Laboratories - Wikipedia

   en.wikipedia.org/wiki/Industrial_Bio-Test...

   Industrial Bio-Test Laboratories (IBT Labs) was an American industrial product safety testing laboratory. [1] [2] [3] IBT conducted significant quantities of research for pharmaceutical companies, chemical manufacturers and other industrial clients; at its height during the 1950s, 1960s, and 1970s, IBT operated the largest facility of its kind and performed more than one-third of all ...

7. Vitamin D not recommended for preventing fractures in older ...

   www.aol.com/vitamin-d-not-recommended-preventing...

   The U.S. Preventive Services Task Force released a draft recommendation advising against using vitamin D to prevent falls and fractures in people over 60. Pharmacist Katy Dubinsky weighs in.