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  • Identification of some soluble esterases of the carrot (Daucus carota I.)

    Creator:
    Carino, Lourminia Almeda
    Abstract:
    Substrate and inhibitor specificities have been used to classify esterases. The purpose of this work was to determine the substrate and inhibitor specificities of the esterases in an aquous extract of lyophilyzed carrots. Esterase activity was determined manometrically at 37°C. The optimum pH of the carrot esterases with several substrates...
    Resource Type:
    Masters Thesis
    Full Text:
    carboxylesterases (EC 3. 1, 1. 1). The sixth esterase was similar to arylester as e (EC 3.1,1.2). An enzyme

  • Identification of some esterases of the green bean (Phaseolus vulgaris L.)

    Creator:
    Putnam, Teryl Beebe
    Abstract:
    This investigation was conducted to differentiate the esterases in a water extract of freeze-dried green beans on the basis of inhibitor and substrate specificities. An attempt was made to classify these esterases according to the criteria used for animal esterases. Activity of the esterases was measured manometrically using the Gilson...
    Resource Type:
    Masters Thesis
    Full Text:
    ester hydrolase, EC 3. 1. 1,2). Various concentrations of organophosphorus compounds inhibited the

  • Effect of cadmium on ceruloplasmin levels in the rat

    Creator:
    Robinson, Alfred Vern
    Abstract:
    Injection of a 2.0 mg Cd ²⁺ /kg B.W. (I.P. as CdC1 ₂ in .05 M NaAc, pH = 6.9-7.2, .15 M or p = .15 with NaCl) resulted in a decrease in ceruloplasmin (EC 1.12.3) p-phenylenediamine oxidase activity within one hour of injection. Maximal decrease (40%) occurred within six...
    Resource Type:
    Masters Thesis
    Full Text:
    decrease in ceruloplasmin (EC 1.12.3) p-phenyl- enediamine oxidase activity within one hour of injection

  • Accumulation of dietary polychlorinated biphenyl by rainbow trout (Salmo gairdneri)

    Creator:
    Lieb, Andrew James
    Abstract:
    This study was conducted to investigate the accumulation of dietary polychlorinated biphenyls (PCB's) by a Mt. Shasta strain of rainbow trout (Salmo gairdneri). A commercial mixture of PCB's (Aroclor 1254) was added to the diet at a level of 15 ppm on a dry weight basis. Accumulation of PCB's was...
    Resource Type:
    Masters Thesis
    Full Text:
    - liquid chromatograph (GLC) equipped with an electron capture (EC) detector. The relative

  • A thermoelectric study of doped liquid thallium-tellurium alloys

    Creator:
    Field, Marshall B.
    Abstract:
    Electrical resistivity and thermoelectric power measurements have been made over the temperature range of 450° to 600°C on n-type liquid thalliurn-tellurium solutions. Liquids with compositions from 61.5 to 72.0 atomic percent thallium were studied. In addition, alloys of some of the three component thallium-teIlurium solutions containing small amounts of silver,...
    Resource Type:
    Masters Thesis
    Full Text:
    slightty during the course of measurements ranging from 470'C to 600" C. The thermocouples were connected

  • Analysis of flavor precursors in radish and radish color extracts

    Creator:
    Kucza, Myriam M.
    Abstract:
    Radish anthocyanin extract has potential as a natural colorant because of its pigment stability and attractive red hue. Presence of undesirable aroma compounds could limit its applications in foods. The pungent principle of radish, 4-methylthio-3-butenyl isothiocyanate (MTBI), is produced enzymatically upon cell injury from its glucosinolate precursor, 4-methylthio-3-butenyl glucosinolate (MTBG),...
    Resource Type:
    Masters Thesis
    Full Text:
    . Overall aroma intensities of radish juice concentrates, diluted to 150, 300, 600 and 1200 mg anthocyanin

  • Ecology of woody riparian vegetation in tributaries of the Upper Grande Ronde River basin, Oregon

    Creator:
    Lytjen, Danna J.
    Abstract:
    Two studies on Catherine Creek and Meadow Creek of the Upper Grande Ronde River basin, quantified several physical and biotic influences on woody riparian community composition and structure. The Catherine Creek study examined the association of woody riparian species with elevational and geomorphic gradients. The Meadow Creek study examined the...
    Resource Type:
    Masters Thesis
    Full Text:
    volume of cottonwoods increased over 1000% and mean crown volume of alders increased over 600%. Willow

  • Design and analysis of a high speed dynamic tow carriage

    Creator:
    Lovejoy, Steven C.
    Abstract:
    A need exists to develop a high speed dynamic tow carriage used to motivate hydrodynamic specimens through a fluid environment. It is desired to simulate high Reynolds number unsteady flow about the specimen by towing the specimen through the fluid. The fluid environment is to be provided by the existing...
    Resource Type:
    Masters Thesis
    Full Text:
    a length of 3.4 m and a diameter ranging from 2 to 600 mm a maximum Reynolds number equal to 4x106

  • The SELCTV database : the susceptibility of arthropod natural enemies to agricultural pests to pesticides

    Creator:
    Theiling, Karen M.
    Abstract:
    Documentation of the side effects of pesticides on arthropod natural enemies has expanded rapidly since the 1950's as part of an increase in non-target side effects literature. Most reviews have been based on empirical analysis of selected literature. The SELCTV database was developed to make a larger information base accessible...
    Resource Type:
    Masters Thesis
    Full Text:
    600 species of natural enemies in 88 families. Research was conducted in 58 countries around the

  • Genesis of some soils in the central western Cascades of Oregon

    Creator:
    Brown, R. B.
    Abstract:
    Soils representative of several landscape units in the H. J. Andrews Experimental Forest, Western Cascade Range, were sampled, analyzed, and tentatively classified. Genetic inferences were drawn relating soils to landscape position and other factors of soil formation. Descriptive information and nutrient capital data were provided to support ecosystem modelling efforts...
    Resource Type:
    Masters Thesis
    Full Text:
    showed the mesic-frigid soil temperature regime boundary to fall at about the 600 m (2, 000 ft