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Filtering by: Alternative title ssim Circular no. 90 Remove constraint Alternative title ssim: Circular no. 90 Decade 1960-1969 Remove constraint Decade: 1960-1969 Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.) Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • A study of attitude stability of a symmetrical satellite in a circular orbit

    Creator:
    Wang, Hsien-tsan
    Abstract:
    A model for analytical study of the attitude stability of an orbiting satellite consists of a rigid body whose mass center is constrained to move at constant speed in a circular path about the center of an inverse-square force field. The body is assumed to have one axis of inertial...
    Resource Type:
    Dissertation
    Full Text:
    ATTITUDE STABILITY OF A SYMMETRICAL SATELLITE IN A CIRCULAR ORBIT Abstract approved: C.E. Smith '' A

  • Isolation and characterization of some oxidizing enzymes of the McFarlin cranberry

    Creator:
    Chan, Harvey T., 1940-
    Abstract:
    Due to the scarcity of information concerning the oxidase systems in cranberries the peroxidase, catalase, and polyphenolase systems, which are used as biochemical indexes of adequacy for enzyme inactivation in other fruits and vegetables, were investigated. Enzyme extracts were prepared from acetone powders with and without phenol-binding agents such as...
    Resource Type:
    Dissertation
    Full Text:
    inactivation of cranberry polyphenolase was found to follow first order kinetics„ There was 90% destruction

  • Isolation and characteristics of the DNA from nuclear polyhedrosis virus

    Creator:
    Carnegie, John William
    Abstract:
    The genome of the nuclear polyhedrosis virus which infects the larvae of the tussock moth, the lepidopteran, Hemerocampa pseudotsugata, was isolated, identified as deoxyribonucleic acid, and characterized in terms of its physical and biological properties. An isolation procedure for the viral DNA was established which consisted of the following steps:...
    Resource Type:
    Dissertation
    Full Text:
    exist, at times, as a circular molecule by ethidium bromide- cesium chloride density gradient analysis

  • The nature of flower bud influence on root regeneration in the Rhododendron shoot

    Creator:
    Johnson, Charles Robert
    Abstract:
    Flower bud influence on rootability of Rhododendron shoots was assayed by rooting leaf-petiole cuttings. Monthly samples of an easy-and an intermediate-to-root cultivar showed periods of poor rooting in the latter during flower development, although both rooted similarly during bud dormancy. The decrease in rooting-potential following flower initiation and development was...
    Resource Type:
    Dissertation
    Full Text:
    with heavy shading (90 percent). The decreased rooting accom- panying flowering was attributed to

  • Gamma-gamma directional correlation study of barium-134

    Creator:
    Coleman, Lamar William
    Abstract:
    Gamma-gamma directional correlations were measured in Ba¹³⁴ at ten angles between 90 degrees and 180 degrees in ten degree increments using a scintillation spectrometer. The spectrometer which used NaI crystals, differential energy selection, and standard coincidence techniques was tested by measuring the directional correlation of the two cascade gamma rays...
    Resource Type:
    Dissertation
    Full Text:
    beta groups are not included. There is no rnechanisrn for including in the scherne the 683 Kev beta

  • An analysis of a population of snowshoe hares, Lepus americanus washingtonii Baird, in western Oregon

    Creator:
    Black, Hugh C., 1941-
    Abstract:
    The ecology of a population of snowshoe hares, Lepus americanus washingtonii, was studied in western Oregon from 1960 to 1962. Objectives were to obtain information to control hares, which frequently cause damage to coniferous reproduction in the region, and to compare the life history of this little-studied subspecies with others....
    Resource Type:
    Dissertation
    Full Text:
    inclusive- boundary- strip, and circular - bivariant- distribution methods was 5. 76 and 10. 15 acres for

  • Some flavor components of wheat

    Creator:
    McWilliams, Margaret Ann
    Abstract:
    The volatile flavor fraction of lightly milled wheat grown in eastern Oregon was isolated for study by two methods: steam distillation under vacuum and steam distillation at atmospheric pressure. The sample obtained under vacuum was extracted with ether which was then evaporated to yield the desired wheat essence. Steam distillation...
    Resource Type:
    Dissertation
    Full Text:
    a solid support of Anakrom ABS, 90 to 100 mesh. The column was heated isothermally at 75 0 C

  • Effectiveness of a fluidized bed in filtration of airborne particulate of submicron size

    Creator:
    Black, Charles Hartgraves
    Abstract:
    Submicron particulate (mean size of 0.52 microns) was filtered from air at substantially atmospheric temperature and pressure by passing air up through a bed of fluidized glass shot in a two inch column. Removal efficiency, defined as the percentage removal of particulate from the air stream, was essentially constant during...
    Resource Type:
    Dissertation
    Full Text:
    ranging from about 50 to 90 percent. Removal efficiency of the fluidized bed improved with increased

  • Geology of the continental terrace off the central coast of Oregon

    Creator:
    Maloney, Neil Joseph
    Abstract:
    The continental terrace west of Oregon between 43° 50'N and 44° 40' N latitude is 50 to 55 miles wide. It consists of a continental shelf, 16 to 35 miles wide, and a continental slope, 16 to 37 miles wide. The eastern portion of the shelf is a smooth, sediment...
    Resource Type:
    Dissertation
    Full Text:
    appear to be of structural origin. West of the banks the shelf edge occurs at depths of 71 to 90 fathoms

  • Influence of certain chemicals on the sensitivity of rat embryos to X-irradiation

    Creator:
    Loawhakasetr, Pathom
    Abstract:
    The effect of 2-aminoethyl-2-thiopseudourea[superscript .]Br[superscript .]HBr (AET), 2-mercaptoethylamine[superscript .]HC1 (MEA) and trisodium calcium chelate of diethylenetriaminepentaacetic acid (CaNa₃DTPA) on the radiosensitivity of rat fetus was investigated. A total of 1256 fetuses were critically examined. Exposure of rats to 200 r whole-body X-irradiation at 9.5 days of gestation resulted in a...
    Resource Type:
    Dissertation
    Full Text:
    (50%) and eye defects in fetuses (90%) when examined at 19th day of gesta­ tion, and only about 27