Now showing items 3796-3815 of 14977

    • DYNAMIC SIMULATION OF A PROCESS INHERENT ULTIMATE SAFETY POWER PLANT (PIUS).

      Khamis, Ibrahim Ahmad, 1956- (The University of Arizona., 1986)
    • Dynamic simulation of the Fast Flux Test Facility primary system

      Sands, Mark Richard (The University of Arizona., 1981)
    • DYNAMIC SOIL-STRUCTURE INTERACTION IN A LAYERED MEDIUM

      KUNDU, T.; Romanel, Celso, 1952- (The University of Arizona., 1987)
      The most popular method in dynamic soil-structure interaction analysis is the finite element method. The versatility in problems involving different materials and complex geometries is its main advantage, yet FEM can not simulate unbounded domains completely. A hybrid method is proposed in this research, which models the near field (structure and surrounding soil) by finite elements and the far field by a continuum approach. The system is excited by monochromatic body waves (P and SV) propagating with oblique incidence and harmonic time dependence. The far field problem is solved using Thomson-Haskell formulation associated with the delta matrix technique. The soil profile does not contain any soft layer and the layers are assumed to be linearly elastic, isotropic, homogeneous and perfectly bonded at the interfaces. Two-dimensional (in-plane) formulation is considered and the analysis is performed on both k- and o-planes through time and spatial Fourier transforms of the field equations and boundary conditions. (Abstract shortened with permission of author.)
    • A dynamic solution to the time constrained transportation scheduling problem

      Xenos, Michael John, 1936- (The University of Arizona., 1968)
    • Dynamic testing of desert soils

      Abu-Obeid, Hamid A., 1940- (The University of Arizona., 1970)
    • THE DYNAMIC THERMAL ANALYSIS OF A VOLTAGE REGULATOR CIRCUIT.

      Woodworth, Ronald Keith. (The University of Arizona., 1985)
    • THE DYNAMICS AND CHANGING PATTERNS OF INTERSTATE MIGRATION IN INDIA

      Barua, Susmita, 1961- (The University of Arizona., 1987)
      The dynamics and changes in the pattern of the interstate migration system in India during the post-Independence period are explored. Three major perspectives, namely (i) the demographic effectiveness of net migration in changing the regional and ethnic balance of population distribution, (ii) the principal components or regional subsystems of in- and out-migration based on similarities in the origin and destination areas of migrants, and (iii) the shift-share components of the change in net migration are adopted to provide insight into the changing structure of interstate population movements in India. The major findings are compared with those of other similar studies done in the context of developed countries. The post-Independence development policies have had a significant impact in diffusing the highly polarized pre-Independence pattern of interstate migration in India.
    • Dynamics of a desert grassland range in relation to drought, fire and grazing

      Sourabie, Kouana Martin (The University of Arizona., 1982)
    • THE DYNAMICS OF A LIQUID PISTON SOLAR POWERED PUMP (COMPUTER MODEL)

      Fox, Fred Andrew (The University of Arizona., 1985)
    • Dynamics of a plasticating extruder

      Smith, Richard Alan, 1943- (The University of Arizona., 1969)
    • The dynamics of an earth-scanning satellite stabilized by gravity-gradient and inertia wheels

      Rumsey, Frank Alexander, 1930- (The University of Arizona., 1962)
    • Dynamics of canopy structure and soil surface cover in a semiarid grassland

      Goff, Bruce Franklin.; Thames, John L.; Renard, Kenneth G.; Gay, Lloyd W. (The University of Arizona., 1985)
      Characteristics of canopy structure and soil surface cover are necessary parameters in hydrologic models of arid and semiarid watersheds. In order to quantify these characteristics, two study sites were established on an experimental watershed in southeastern Arizona, and periodic measurements were made during the 1983 summer/fall growing season. During this period, maximum mean foliage height ranged 10-12 cm on the two study sites, while maximum mean foliage mass and foliage cover ranged 67-105 g/m2 and 30-51%, respectively. Mean live leaf area index (LAI), calculated from foliage mass data, peaked at 0.6-0.7. Mean soil surface cover averaged 34-57%. In general, little change was observed in the measured characteristics on either site during the season. Although the two sites differed considerably in foliage and surface covers, they were similar in foliage mass and LAI.
    • Dynamics of Chytrid Fungus (Batrachochytrium Dendrobatidis) Infection in Amphibians in the Rincon Mountains and Tucson, Arizona

      Schwalbe, Cecil R.; Ratzlaff, Kristina M.; Rosen, Philip C.; Swann, Don E.; Matter, William J.; Schwalbe, Cecil R. (The University of Arizona., 2012)
      The chytrid fungus Batrachochytrium dendrobatidis (Bd) has been implicated in amphibian declines around the world, including the southwestern United States. I studied patterns of Bd infection in Hyla arenicolor, Rana catesbeiana, and R. yavapaiensis in the Rincon Mountains and Tucson Basin in Arizona. Bd prevalence and infection intensity were location dependent in all species and R. yavapaiensis may be a reservoir of Bd for H. arenicolor, where they co-occurred. Treatment of a backyard population of R. yavapaiensis with itraconazole did not reduce winter frog mortality due to Bd. The lethal Bd infection threshold of this population was between 59,847 and 4,237,330 zoospores. Zoospore loads from swabs of freshly dead frogs did not differ significantly from those taken from those same frogs following freezing and thawing. Thus, important information regarding infection intensity and probable cause of death can be gathered from frogs collected by others and frozen until convenient to process.
    • The dynamics of collared peccary dispersion into available range

      Supplee, Vashti Crowninshield (The University of Arizona., 1981)
    • Dynamics of selected aspects of United States relations with Spain, 1945-53

      Duman, Robert John, 1933- (The University of Arizona., 1965)
    • THE EARLY ADOLESCENT'S EYE VIEW OF YOUTH SUICIDE.

      Ross, Patricia Wilson, 1949- (The University of Arizona., 1986)
    • The early career of Burgoyne Diller: 1925-45

      Johnson, David Hoyt (The University of Arizona., 1978)
    • Early conservation by the Arizona Federation of Women's Clubs from 1900 to 1932

      Cortner, Hanna J.; Johnson, Sandra Jeanne, 1968- (The University of Arizona., 1993)
      Women have been historically written out of human achievement. This is especially true in organized conservation. Historical analyses of the Progressive conservation era and the period following to the New Deal have understated women's organized participation in conservation. Through an analysis of Women's Clubs' records, newspapers, and magazines from 1900-1932, Arizona clubwomen's activities regarding natural resources are examined. The clubwomen are found to have been mutually and simultaneously supportive of conservation, preservation, civic improvement, nature study, and recreation--antagonistic issues at differing times. They reconciled those conflicts by advocating management solutions based upon resource renewability. Behind a shield of patriotism, maternalism, and housekeeping, the clubwomen used resource conservation to encourage a healthy future for humans and the environment. Conservation also served to advance their status as women through community service and self-education.
    • EARLY DIAGNOSIS AND TREATMENT OF CERVICAL TISSUE ABNORMALITIES

      Berg, Judith A.; Wilson, Heidi Eileen (The University of Arizona., 2003)
      The purpose of this clinical project is to invent a new Pap smear collection instrument and describe beginning research that is intended to establish an increased endothelial cell yield with intact nuclei that will lead to increased sensitivity and specificity of Pap smears with the use of this new instrument.