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The sodium fusion test, or Lassaigne's test, is used in elemental analysis for the qualitative determination of the presence of foreign elements, namely halogens, nitrogen, and sulfur, in an organic compound. It was developed by J. L. Lassaigne. [1] The test involves heating the sample with sodium metal, "fusing" it with the sample. A variety ...
collect a urine sample Nasogastric tube: for nasogastric aspiration of stomach contents; usually it is not used Water bath: for flotation tests to detect presence of gas, specially for infants (lungs, intestine) as a sign of postpartum life Specimen jars/envelopes/packets: preservation of material evidence Swabs: collecting smears Metacarpal saw
A key principle in the dissection of human cadavers (sometimes called androtomy) is the prevention of human disease to the dissector.Prevention of transmission includes the wearing of protective gear, ensuring the environment is clean, dissection technique [2] and pre-dissection tests to specimens for the presence of HIV and hepatitis viruses. [3]
The terms animal testing, animal experimentation, animal research, in vivo testing, and vivisection have similar denotations but different connotations.Literally, "vivisection" means "live sectioning" of an animal, and historically referred only to experiments that involved the dissection of live animals.
The Tandem Mirror Experiment (TMX and TMX-U) was a magnetic mirror machine operated from 1979 to 1987 at the Lawrence Livermore National Laboratory. [1] It was the first large-scale machine to test the "tandem mirror" concept in which two mirrors trapped a large volume of plasma between them in an effort to increase the efficiency of the reactor.
The report revised their budget estimate to $2.25 billion, not including related R&D which pushed it to $3.3 billion total, and pushed back the completion date to 2006 with the first lines coming online in 2004. [91] [92] A follow-up report the next year pushed the budget to $4.2 billion, and the completion date to 2008.
10-beam NIR and frequency-tripled 351 nm UV laser; fusion yield of 10 13 neutrons; attempted ignition, but failed due to fluid instability of targets; led to construction of NIF: 1.3 PW: 120 kJ: 30 J: Livermore: LLNL: ISKRA-5: Operational-1989: 12-beam iodine gas laser, fusion yield 10 10 to 10 11 neutrons [96] 100 TW: 30 kJ: 0.3 J: Sarov: RFNC ...
White matter dissection refers to a special anatomical technique able to reveal the subcortical organization of white matter fibers in the human or animal cadaver brain. The first studies of cerebral white matter (WM) were described by Galen and by the subsequent efforts of Vesalius on human cadaver specimens.