178,525 research outputs found
[Travel Agent Appointment Agreement between C. M. Knowles, Grace Line, Inc. and T. N. Carswell, Carswell Agency]
No full textA travel agent appointment agreement between The Grace Line, Inc., 10 Hanover Square, New York 5, N. Y., signed by C. M. Knowles and Carswell Agency, Abilene, Texas, by T. N. Carswell, dated November 15, 1949. Signed by J. B. Dalton, witness
Marriage record of Houze, Charles J. and Knowles, Mary C.
No full textMarriage license for Charles J. Houze and Mary C. Knowles. N.D. Kelly was the Justice of the Peace
Students at Knowles Hall, January 10, 1893
No full textStudents sit on the steps outside of Knowles Hall. George A. Towns sits in the center. Written on verso: Compliments of C. A. Davis, Jan 10, '[18]93. Knowles Hal
Marriage record of Knowles, Charles V. and Burley, C. C.
No full textMarriage license for Charles V. Knowles and C.C. Burley. William Wilson de Hart was the officiant
Mechanistic Investigation of Intermolecular Reductive C–H PCET via Isotopic Fractionation
No full textIn this thesis, preliminary experimental evidence in support of a possible concerted intermolecular C–H Multi-site Proton-Coupled Electron Transfer (MS-PCET) elementary step is described. While oxidative C–H MS-PCET reactions have been investigated recently in various contexts for homolytic cleavage of strong C–H bonds, many limitations still exist for the application of such an underutilized elementary step. Previous work by the Knowles lab featured a photoredox C–H alkylation reaction featuring an oxidative C–H MS-PCET step between the substrate and a noncovalent complex between the Ir photocatalyst and the phosphate base. However, reductive C–H MS-PCET as an elementary step has been uncommon especially in an intermolecular context, as a result of the precise orientation of the proton required for efficient C–H bond formation. In this thesis, the mechanism of photocatalyzed decarboxylation of potassium triphenyl acetates is investigated, with the emphasis on distinguishing between stepwise electron transfer/proton transfer (ET/PT) and intermolecular MS-PCET for C–H bond formation via isotopic fractionation. Isotopic fractionation is a highly sensitive method to distinguish between concerted MS-PCET and stepwise ET/PT, as the fractionation slope of ET/PT is independent of the redox potential of the photocatalyst. Previous research in the Knowles group identified that in decarboxylation of triphenyl acetate anions, the H/D isotopic fractionation slope was dependent on the identity of the Ir photocatalyst. In this thesis, the dependence is further explored with a range of photoredox catalysts covering a wide range of E°Red (PC/PC-), where a transition between a slope of 1.7 ± 0.1 and 2.64 ± 0.07 with decrease in magnitude of E°Red (PC/PC-) providing support for a transition from ET/PT to a concerted MS-PCET mechanism. Thus, this thesis provides preliminary mechanistic evidence in support of the viability of intermolecular reductive C–H MS-PCET as a novel elementary step
Ashes of the First Knowles Hall
No full textAll that remained of the first Knowles Hall was ashes after a fire had erupted, apparently from faulty wiring in the center of the building, on the night of December 1 or 2, 1909
Marriage record of Barr, W. C. and Knowles, Lillian
No full textMarriage license for W.C. Barr and Lillian Knowles. J.C. Tims was the officiant
biocompatibility and biological tests
No full textDefinition-biocompatibility and biological test as cytotoxicity, genotoxicity, carcinogenity, reproductive toxicity, irritation and sensitization , local effect after implantation, systemic toxicity, hemocompatibility, degradation.Biofunctionality tests
Marriage record of Knowles, Richard W. and Pettie, Lizzie
No full textMarriage license for Richard W. Knowles and Lizzie Pettie. John C. White was the Notary Public
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