No description available.

Thesis (Dr. P.H.)--University of Texas Health Science Center at Houston, School of Public Health, 1991. / Typescript. Includes bibliographical references (leaves 212-216).

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No description available.

A lo largo de más de 400 años el Perú dio origen a una raza caballar única. El Caballo Peruano de Paso es considerado como el caballo de silla más cómodo del mundo y su creciente demanda en el exterior, así como la afición de nuevos propietarios lo hacen un potencial generador de oportunidades. El Proyecto de Tesis de Grado “Centro de Difusión y Exhibición del Caballo Peruano de Paso” se plantea en Pachacamac, como una sede que impulse al caballo peruano a nivel cultural y recreativo, planteando espacios para una nueva actividad que se viene realizando con gran acogida desde hace apenas 3 años en el Perú “La Gala” . Esta nueva función del caballo peruano de paso incentiva a reinterpretar los espacios ecuestres y explorar nuevas relaciones espaciales caballo/hombre en búsqueda de una arquitectura que le otorgue al proyecto un carácter protagónico en el entorno. El distrito de Pachacamac concentra la presencia de varios haras dedicados a la crianza del caballo peruano de paso y a la sede de concursos de la ANCPCPP. Se ha escogido un terreno vecino en al complejo arqueológico de Pachacamac y al Complejo Turístico Mamacona, lo cual le da al proyecto la posibilidad de integrarse a un recorrido turístico existente, mientras la proximidad a la vía panamericana sur conecta al proyecto con toda la costa del Perú. La ubicación estratégica del terreno escogido incentiva recorridos a caballo por las actividades turísticas vecinas, así como cabalgatas por el litoral y el valle de Lurín, a pocos minutos de Lima. / Tesis

Regulated deficit irrigation (RDI) is a common and useful practice for water conservation and improving grape quality. To attain better grape characteristics and wine quality, a substantial degree of irrigation stress is intentionally allowed to occur during the first part of berry formation and can continue until later into veraison. Understanding the effects of deficit irrigation on photosynthetic rates could be helpful in determining at what degree and duration a grower should perform this irrigation practice. The focus of this study was to determine the effects of using differing degrees of RDI in a vineyard located in Paso Robles, California (central coast region) on gas exchange of the Syrah variety. The target irrigation levels were set for each season at 75, 60, 45, and 30% ETc of a fully irrigated vine (100% ET). The 60% replication was considered as the control for this study, as it is the standard target ET rate for the vineyard where this study was conducted. A gas analyzer (LICOR 6200) was used to measure the overall rate of photosynthesis during two successive growing seasons (2004 & 2005). Measurements were taken from bloom through harvest and were compared among the four different irrigation levels. Along with overall photosynthetic rate, the leaf temperature, stomatal conductance, light level, and relative humidity were also measured. The results of the two year study were statistically compared through an analysis of variance (ANOVA) and analyzed for their significance. The results of the study showed that minor differences in the mean photosynthetic rates were found to occur during brief periods of the growing season. These differences ranged from 1-4 weeks and did not occur at similar times of the growing season. However, no statistical significant differences were found to exist when compared among the four irrigation levels for the entire growing season. Observed differences in canopy sizes indicated that irrigation amounts had affected the overall growth to some degree during this two year study. Several plant physiological measurements showed a significant difference in the measured gas exchange rates between sun exposed leaves and the shade leaves within the treatment area. A significant correlation of the effect of leaf temperature on stomatal conductance was observed to exist in one of the irrigation treatments (45% ET) during this study. Other plant physiological measurements indicated that highly significant differences existed between the photosynthesis rate and leaf temperature. Photosynthetic rates were highly significantly correlated to leaf conductance, air temperature, and relative humidity. A significant difference of photosynthetic rates was identified to occur between stomatal conductance and air temperature. This study concludes that differential irrigation amounts on Syrah in the Central Coast region, specifically Paso Robles, have minimal effect on overall photosynthetic rate and does not fully support the anisohydric stomatal reaction that has recently been studied by plant physiologists working with this variety.

Applied research project (D. Min.)--School of Theology and Missions, Oral Roberts University, 2004. / Includes abstract and vita. Translated from Korean. Includes bibliographical references (leaves 252-258).

Applied research project (D. Min.)--School of Theology and Missions, Oral Roberts University, 2004. / Includes abstract and vita. Includes bibliographical references (leaves 164-168).

La presente investigación evalúa el grado en que el dique-embalse Paso de las Piedras ha interrumpido la continuidad hidrológica del río Sauce Grande y cuantifica los impactos de la regulación hidrológica sobre el régimen de caudal, la morfología y la temperatura del agua del río aguas abajo del embalse. El trabajo de tesis presenta una evaluación integral y sistémica de los impactos del dique-embalse basada en el entendimiento de los procesos fluviales que ocurren aguas arriba del mismo. Además de proveer información sobre los impactos hidrológicos, morfológicos y térmicos de la construcción y operación del dique-embalse, este estudio genera nuevas series de datos climáticos e hidrológicos que proporcionan una importante plataforma sobre la cual basar futuras investigaciones de la cuenca del Sauce Grande. Por otra parte, este estudio implementa un marco metodológico aplicado al análisis hidro-geomorfológico de cuencas no aforadas que tiene un gran potencial de aplicación en otras cuencas de la región y en otras regiones semiáridas del mundo. / Despite the regional importance of the Sauce Grande River as main source for water supply and the large capacity of the Paso de las Piedras Reservoir, both the hydrology of the river basin and the effects of the impoundment on the river environment remain poorly evaluated. This study provides the very first assessment of the degree of flow regulation induced by the Paso de las Piedras Dam on the middle section of the Sauce Grande River, and quantifies its impacts on the hydrology, morphology and patterns of water temperature of the river downstream from the impoundment. In addition to providing new information on the response of regulated rivers to upstream impoundment and on the effects of impoundment on the Sauce Grande River specifically, this study generates spatial, climatic and hydrologic data and implements a methodological framework to hydrological assessment of ungauged basins. The methods include a set of procedures performed to generate data and a set of procedures performed to hydrological and morphological assessment. Methods used to generate data include (i) terrain modelling of the river basin, (ii) filling and modelling of climatic data, (iii) hydrological modelling of the upper river basin, and (iv) flow simulation and calculation. Methods used for hydrological and morphological assessment include (i) inspection of the water balance of the dam reservoir and quantification of the reservoir size-yield-performance relationships, (ii) quantification of the degree of hydrological alteration of the river downstream, (iii) classification of diurnal regimes of water temperature and quantification of their climatic sensitivity, and (iv) GIS-based diachronic analysis of change in the fluvial forms and the fluvial landscape. Results revealed that reservoir inflows are driven by varying climate conditions, whereas reservoir outflows are constrained by the dam purpose for water supply. Large volumes of water are yielded annually (73 % of the mean annual runoff) and the remaining volume is conserved within the reservoir for periods of drought. These patterns of flow regulation have seriously affected the hydrology and water quality of the river downstream. Floods were fully eliminated and the magnitude and frequency of high and low flows were reduced dramatically, with substantial increase in the duration of similar flow conditions. Furthermore, summer temperatures were depressed, winter temperatures were increased, and diurnal fluctuations were altered in both magnitude and timing. Analysis of the geomorphic response to altered hydrology revealed fluvial stability. Lateral and vertical channel activity was related to human intervention to facilitate the evacuation of dam outlets and spills more than to natural adjustments to reduced flow discharge and sediment load. The reduced flow, even if sediment-free, is incompetent to work its channel and at present, the downstream channel morphology is a relic of a fluvial environment created in the past under conditions of higher energy. The new climatic, hydrologic and morphologic information yielded herein has triple applicability: (i) it informs dam managers about the complex behaviour of the river system, (ii) it contributes to improve reservoir operation procedures while maintaining the overall integrity of the river system, and (iii) it provides a consistent scientific platform on which to base further research efforts conducting to an interdisciplinary framework of river restoration. Furthermore, the methods implemented in this research are widely transferable to hydrological assessment of ungauged basins worldwide, with special applicability to semiarid regions.

This thesis seeks to promote a clearer understanding of relationships between trade liberalization and environmental quality in a free trade zone along an international border, between countries unevenly matched in development and infrastructure. Specifically, it examines whether theories of environmental degradation provide appropriate models for explaining the impact of NAFTA on the environment in the Paso del Norte. The relationship between trade liberalization and environmental quality is examined through an analysis of environmental indicators in the decade preceding and following NAFTA. Finally, the role of environmental governance is addressed, especially the intricacies involved in multi-jurisdictional governance of the environment. The research indicates that trade liberalization is not necessarily environmentally harmful. The data suggest that NAFTA had little to no direct negative impact on the region's environmental condition, but they also do not provide evidence that NAFTA improved the environment. One factor that could have helped to limit its effects may be local, interstate, and international initiatives that improved the health of the ecosystem along the border before NAFTA was even conceived. Another factor is the environmental governance in place before and after NAFTA. Thus, it may be beneficial for trade liberalization agreements to address environmental concerns as integral parts of the negotiations, and to set requirements for meeting infrastructure demands, as the agreements are implemented. Furthermore, it is important that international environmental institutions established to monitor environmental cooperation be more closely associated with the trade cooperation organizations and be given the authority needed to complete their directives more effectively. / Master of Arts