955 resultados para Johnson, Andrew, 1808-1875.
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Andrew Tinnish reaches the home plate in the 1998 Blue/Red scrimmage. Tinnish was inducted into the Brock Baseball Hall of Fame.
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The mass spectra of compounds of t he series (C6F5 )3-n MP~ (n = 1,2,3, M = P and As ), (C6F5>3Sb, Ph) Sb and (C6F5 )2SbPh have been studied in detail and the important modes of fragmentation were e1ucidated, a ided by metastable ions. Various trends attributed to the central atom and or the . substituent groups have been noted and, where applicable, compared to recent studies on related phenyl and pentafluorophenyl compounds of groups IV and V. The mass spectra of fluorine containing organometallic compounds exhibit characteristic migrations of fluorine to t he central atom, giving an increasing abundance of MF+, MF2+' and RMF+ (R = Ph or C6F5) ions on descending the group_ The mass spectra of pentafluorophenyl , antimony, and arsenic compounds show a greater fragmentation of the aromatic ring than those of phosphorus. The mixed phenyl pentafluorophenyl derivatives show a characteristic pattern depending on the number of phenyl grm.lps present but show t he general characteristics of both the tris(phenyl) and tris(pentafluorophenyl) compounds. The diphenyl pentafluorophenyl der ivatives show the loss of biphenyl ion as the most import ant step, the los s of phenyl t o give the i on PhMC6F5 + being of secondary importance. The ,bis(pentafluorophenyl) phenyl derivatives fragment primarily by loss of PhC6F5 to give C6F5M+ ions, the abundance of t hese increasing r apidly from phosphorus to arsenic. This species then, exhibits a characteristic fragmentation observed in the tris(penta- fluorophenyl ) compounds. However, the abundance of (C6F5)2M+ species in these compounds i s small. I ons of the type C6H4MC6F4 + and tetrafluorobiphenylene ions C6H4C6F4 + also are observed on substitution of a phenyl group for a penta- fluorophenyl group. The fully fluorinated species (C6F4)2M+ is not observed, although octafluorobiphenylene ions , (C6F4)2+' are evident in several spectra . The appearance potentials of the major ions were obtatned from the ionisation efficiency curves. Attempts were made to correlate these to the effect of the central atom in substituent groups, but the large errors involved prevented the reaching of quantitative conclusions, although it would appear that the electron is removed from the ligand in the ionisation of t he parent molecule .
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Chapman College Alumni Trustees pose for a portrait on the campus in Orange, California in the late 1980s. Left to right: James Roosevelt, A. Andrew Johnson, George Argyros, Harmon Wilkinson, Irvin C. Chapman and Myron Cole.
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Bibliographical reference included in "Notes": p. 30.
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On spine : The Grand Lodge of Canada in the Province of Ontario.
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Survey map and description of Andrew Wilson's land created by The Welland Canal Company. Included is a written description of the land along with a drawing of the land. Noteable features include; line between Marlatt and Wilson's land, canal. The land is a total of 23 acres, 1 road, and 33 perches. Surveyor notes are seen in pencil on the map. The land was surveyed by George Keefer in August 1831.Survey notes are on page 89, map is on page 91 and includes George Marlatt's land.