The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Effect of magnetic fields on the resistivity of some alloys》. Authors are Obata, J..The article about the compound:4-(((1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl)oxy)-4-oxobutanoic acidcas:77341-67-4,SMILESS:CC(C)[C@@H]1CC[C@@H](C)C[C@H]1OC(=O)CCC(O)=O).Related Products of 77341-67-4. Through the article, more information about this compound (cas:77341-67-4) is conveyed.
The application of the electron theory to elec. conduction in pure metals when subjected to a transverse magnetic field shows that the relative change in resistance is made up of two terms, one due to change in mol. configuration, the other due to electronic drift. The latter term is absent in the expression for the longitudinal field. In the case of alloys, the term depending on mol. configuration would be further influenced by a magnetic field. The alloys investigated include constantan, manganin, eureka, platinoid, Cu-Mn, Cu-Mn-Al, phosphor-bronze, Pt-Ir, and nichrome, and the change of resistance was measured in both longitudinal and transverse fields (up to 20,000 c. g. s. units) and at various temperatures between that of liquid air and steam. The resistance determinations could be made in the most favorable cases to 1 part in 1,000,000, and tests on Ni, Au, and Cu were in substantial agreement with those of previous observers. In Cu alloys containing Ni or Mn, both transverse and longitudinal fields diminish the resistance, and the effect observed always decreases with rise of temperature It would appear that in these cases the field produces an increase in the free path of the conducting electron. For weak fields the decrease is proportional to the square of the field. In phosphor-bronze and Pt-Ir the effect is very small, and is probably due to the presence of magnetic constituents. In nichrome the effects are very similar to those for pure Ni, and some part of the Ni exists. in the free state in this alloy.
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