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SPATIAL DISTRIBUTION OF CARBON AND NITROGEN IN SOME DESERT SHRUB ECOSYSTEMSBarth, Richard Charles, 1943-, Barth, Richard Charles, 1943- January 1975 (has links)
No description available.
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INFLUENCE OF MESQUITE, PALO VERDE, AND SAGUARO ON SOIL CHEMICAL PROPERTIESLoqa, Harith Jabbouri, 1937- January 1972 (has links)
No description available.
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CLIENT MOTIVE FOR COUNSELOR SELECTION, AND SATISFACTION WITH COUNSELING IN AN UNASSIGNED COUNSELOR SETTINGDeardorff, Chester Duane, 1933- January 1972 (has links)
No description available.
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Detection of phenological change in cultivated and uncultivated vegetation with multispectral videoKliman, Douglas Hartley, 1963- January 1987 (has links)
Multispectral video (MSV) images were used to measure phenological changes in cultivated and uncultivated vegetation communities surrounding the Palo Verde Nuclear Generating Station (PVNGS). Multispectral video imagery was acquired from aircraft on seven dates between the middle of June and the end of September, 1986. Images representing three sites near the PVNGS were selected to calculate Ratio Vegetation Index (RVI) values for seven surface cover types. Mean RVI values were tested sequentially for change, plotted as a function of time, and then compared to a moisture index and the crop calendar. MSV detected changes in cultivated vegetation corresponding to the crop calendar. Changes in natural vegetation and the non-vegetated cover types were also detected, but did not correlate to the moisture index. There is insufficient evidence to determine if detected changes in uncultivated vegetation were the result of phenological changes or electronic noise.
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Mesquite and Palo Verde Trees for the Urban LandscapeSchuch, Ursula, Kelly, Jack 01 1900 (has links)
10 pp. / This publication describes gorwth habit and charactersitics of mequite and palo verde trees for the urban landscape. Culture and problems are discussed.
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Mesquite and Palo Verde Trees for the Urban LandscapeSchuch, Ursula K., Kelly, Jack J. 04 1900 (has links)
Revised; Originally Published: 2003 / 10 pp.
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Environmental Justice Issues in Communities Hosting US Nuclear Power PlantsJanuary 2014 (has links)
abstract: This study explores the potential risks associated with the 65 U.S.-based commercial nuclear power plants (NPPs) and the distribution of those risks among the populations of both their respective host communities and of the communities located in outlying areas. First, I examine the relevant environmental justice issues. I start by examining the racial/ethnic composition of the host community populations, as well as the disparities in socio-economic status that exist, if any, between the host communities and communities located in outlying areas. Second, I estimate the statistical associations that exist, if any, between a population's distance from a NPP and several independent variables. I conduct multivariate ordinary least square (OLS) regression analyses and spatial autocorrelation regression (SAR) analyses at the national, regional and individual-NPP levels. Third, I construct a NPP potential risk index (NPP PRI) that defines four discrete risk categories--namely, very high risk, high risk, moderate risk, and low risk. The NPP PRI allows me then to estimate the demographic characteristics of the populations exposed to each so-defined level of risk. Fourth, using the Palo Verde NPP as the subject, I simulate a scenario in which a NPP experiences a core-damage accident. I use the RASCAL 4.3 software to simulate the path of dispersion of the resultant radioactive plume, and to investigate the statistical associations that exist, if any, between the dispersed radioactive plume and the demographic characteristics of the populations located within the plume's footprint. This study utilizes distributive justice theories to understand the distribution of the potential risks associated with NPPs, many of which are unpredictable, irreversible and inescapable. I employ an approach that takes into account multiple stakeholders in order to provide avenues for all parties to express concerns, and to ensure the relevance and actionability of any resulting policy recommendations. / Dissertation/Thesis / Ph.D. Environmental Social Science 2014
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Geology of the Palo Verde Ranch Area, Owl Head Mining District, Pinal County, ArizonaApplebaum, Steven January 1975 (has links)
A quartz diorite intrusion of probable early Tertiary age that crops out over at least 6 square miles in the Palo Verde Ranch area in Pinal County, Arizona was mapped as a distinct intrusion. The quartz diorite intrudes an area comprising Pinal Schist, Oracle granite, andesitic flows, granoaplite, and dike rocks including both pegmatite and diabase. Two major physical features, the Owl Head Buttes and Chief Buttes volcanic areas, both remnants of an extensive early Tertiary series of flows of intermediate composition that covered the area, now remain as lava-capped buttes above the pediment. Weak but persistent fracture-controlled copper mineralization is found in the quartz diorite and the Pinal Schist at or near their mutual contacts in the form of chrysocolla, malachite, black copper oxides, chalcocite, chalcopyrite, and bornite, in decreasing order. Pyrite is rare. Alteration related to northeast and northwest-trending fractures increases in intensity from the common propylitic to argillic to the northeast toward the San Juan claims area. A barely discernible increase in copper sulfides mirrors the alteration zoning, although geochemical sampling showed background copper in the quartz diorite to be more uniform away from fractures.
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