1,722,957 research outputs found
Interview with J. Kent Clark
Get PDFAn interview in three sessions, January-February 1989, with J. Kent Clark, emeritus professor of literature. Professor Clark, a specialist in seventeenth- and eighteenth-century English politics and literature, received his BA at Brigham Young University in 1939 and his PhD at Stanford. In this interview, he discusses his Mormon background in Utah and his early interest in musical comedy. Graduate school at Stanford was interrupted by World War II; he eventually finished his dissertation (on Jonathan Swift) and received his PhD in 1950, by which time he had already joined Caltech's Humanities Division (1947) as an English instructor. He recalls the intellectual character of the division in the late forties under the chairmanship of Clinton Judy and the high caliber of the literature and history courses. Recollections of colleagues Harvey Eagleson, Roger Stanton, George McMinn, Beach Langston, William Huse, Hallett Smith. He talks about the extremely popular musical comedies he wrote and produced with Elliot Davis on campus for many years, beginning in 1954. Recollections of Caltech president Lee DuBridge and of the changes in the late 1960s as the division became the Division of Humanities and Social Sciences; greater emphasis on research and specialization, as opposed to teaching and survey courses. Professor Clark also recalls his stint as Caltech's "culture czar" and the fate of the arts program instituted in the late sixties. He discusses the admission of women (1970) and the Jenijoy La Belle tenure case, and he concludes with a discussion of his work on biographies of the late-seventeenth-century figures (and brothers) Goodwin and Thomas Wharton
J. Kent Hamilton, Toledo, Ohio [approximately 1884]
No full textPhotograph of J. Kent Hamilton, Lucas County Prosecutor. The photo dates around 1884. Terms associated with the photograph are: Hamilton, J. Kent | Veterans | Veterans--1880-1890. | Civil war | Lucas County Prosecutor | Lawyers | Lawyers--1880-1890. | Suits (Clothing) | Bow ties | Mustaches
J. Kent Taylor
No full textJ. Kent Taylor has been assigned as the new recreation and lands branch chief on the Ashley Naitonal Forest, including the Flaming Gorge National Recreation Area. He is a native of the Uinta Basin
J. Kent Williams with Trophies
No full textJ. Kent Williams displays trophies to be presented at the final game of the Vernal Invitational Basketball Tournament. The tournament was held for the Vernal swimming pool fund drive
Developing the Musical Ear
Get PDFCONFERENCE REPORT Developing the Musical Ear by J. Kent Williams The conference opened with welcoming remarks by Joel Lester, Dean of the Mannes College of Music
Modelling of Particulate Carbon and Species Formation in co-Flowing Diffusion Flames of Ethylene
No full textA model of species and particulate formation in laminar diffusion flames is presented. The kinetic model is based on the chemistry of fuel oxidation and pyrolysis, the formation of aromatics and their growth into particle nuclei, particle growth by surface reactions, coagulation, and finally particle oxidation. A sectional model is used for the particle phase. The sectional method divides the particle mass range into classes of species each with a rate equation for surface growth, coagulation, and oxidation. An inception model links the gas-phase mechanism with the smallest particle section. Predictions are compared with experimental data in two laminar coflowing diffusion flames of ethylene for which experimental profiles of stable species, aromatic compounds, high-molecular-mass precursor species, and soot are available. The predictions show good agreement with data for total particulates, defined as the sum of soot plus nano-organic carbon particles. The model has a continuous size distribution and is able to address nanoparticles which comprise a significant part of the total particle loading. A conclusion from the sensitivity analysis is that the inception process, the molecular growth process by aromatic addition on particle nuclei, and surface addition of C2H2 all play important roles which need to be studied in greater detail to predict the right size distribution and volume fraction of particulates formed in flames
A model of particulate and species formation applied to laminar, nonpremixed flames for three aliphatic-hydrocarbon fuels
No full textA detailed kinetic mechanism is developed that includes aromatic growth and particulate formation. The model includes reaction pathways leading to the formation of nanosized particles and their coagulation and growth to larger soot particles using a sectional approach for the particle phase. It is tested against literature data of species concentrations and particulate measurements in nonpremixed laminar flames of methane, ethylene, and butene. Reasonably good predictions of gas and particle-phase concentrations and particle sizes are obtained without any change to the kinetic scheme for the different fuels. The model predicts the low concentration of particulates in the methane flame (about 0.5 ppm) and the higher concentration of soot in the ethylene and butene flames (near 10 ppm). Model predictions show that in the methane flame small precursor particles dominate the particulate loading, whereas soot is the major component in ethylene and butene flames, in accordance with the experimental data. The driving factors in the model responsible for the quite different soot predictions in the ethylene and butene flames compared with the methane flame are benzene and acetylene concentrations, which are higher in the ethylene and butene flames. Soot loadings in the ethylene flame are sensitive to the acetylene soot growth reaction, whereas particle inception rates are linked to benzene in the model. A coagulation model is used to obtain collision efficiencies for some of the particle reactions, and tests show that the modeled results are not particularly sensitive to coagulation at the rates used in our model. Soot oxidation rates are not high enough to correctly predict burnout, and this aspect of the model needs further attention
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