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  2. Dye-and-pry - Wikipedia

    en.wikipedia.org/wiki/Dye-and-Pry

    Dye-n-Pry is a useful failure analysis technique to detect cracking or open circuits in BGA solder joints. [2] This has some practical advantages over other destructive techniques, such as cross sectioning, as it can inspect a full ball grid array which may consist of hundreds of solder joints.

  3. Phosphatidylethanol - Wikipedia

    en.wikipedia.org/wiki/Phosphatidylethanol

    The lipid accumulates in the human body and competes at agonists sites of lipid-gated ion channels contributing to alcohol intoxication. [3] The chemical similarity of PEth to phosphatidic acid (PA) and phosphatidylinositol 4,5-bisphosphate (PIP2) suggest a likely broad perturbation to lipid signaling; the exact role of PEth as a competitive lipid ligand has not been studied extensively.

  4. Phosphate test - Wikipedia

    en.wikipedia.org/wiki/Phosphate_test

    A quantitative method to determine the amount of phosphate present in samples, such as boiler feedwater, is as follows.A measured amount of boiler water is poured into a mixing tube and ammonium heptamolybdate reagent is added.

  5. Phosphoric acids and phosphates - Wikipedia

    en.wikipedia.org/wiki/Phosphoric_acids_and...

    The general formula of a phosphoric acid is H n−2x+2 P n O 3n−x+1, where n is the number of phosphorus atoms and x is the number of fundamental cycles in the molecule's structure; that is, the minimum number of bonds that would have to be broken to eliminate all cycles.

  6. Ethanolamine-phosphate phospho-lyase - Wikipedia

    en.wikipedia.org/wiki/Ethanolamine-phosphate...

    Other names in common use include O-phosphoethanolamine-phospholyase, amino alcohol O-phosphate phospholyase, O-phosphorylethanol-amine phospho-lyase, and ethanolamine-phosphate phospho-lyase (deaminating).

  7. Appel reaction - Wikipedia

    en.wikipedia.org/wiki/Appel_reaction

    The Appel reaction is an organic reaction that converts an alcohol into an alkyl chloride using triphenylphosphine and carbon tetrachloride. [1] The use of carbon tetrabromide or bromine as a halide source will yield alkyl bromides, whereas using carbon tetraiodide, methyl iodide or iodine gives alkyl iodides.

  8. Phosphotungstic acid - Wikipedia

    en.wikipedia.org/wiki/Phosphotungstic_acid

    Phosphotungstic acid (PTA) or tungstophosphoric acid (TPA), is a heteropoly acid with the chemical formula H 3 P W 12 O 40].It forms hydrates H 3 [PW 12 O 40]·nH 2 O.It is normally isolated as the n = 24 hydrate but can be desiccated to the hexahydrate (n = 6). [2]

  9. Michaelis–Arbuzov reaction - Wikipedia

    en.wikipedia.org/wiki/Michaelis–Arbuzov_reaction

    When a halide atom is found in the ester chain off of the phosphorus atom, isomerization to the corresponding Arbuzov product has been known without addition of an alkyl halide. The Perkow reaction is a competing reaction pathway for α-bromo- and α-chloroketones. Under the reaction conditions a mixture of the Perkow product and the normal ...