Dry and wet fine earth spectral measurements were made on the Ap soil surface horizons on the Maricopa Agricultural Center by using a Barnes Modular Multiband Radiometer. Three subsets were used in the analyses 552, 101 and 11. There were three soil series, Casa Grande, Shontik and Trix, four soil mapping units, and three texture classes identified on the farm. The wet soil condition reduced the amplitude of the spectral curves over the entire spectrum range (0.45 to 2.35 μm). The spectral curves were statistically related to the soil mapping units to determine if the soil mapping units and texture classes could be separated. The wet soil condition and the smaller sample size increased the correct classification percentages for soil mapping units and texture classes. LSD tests showed there were significant differences between these groups. Simple- and Multiple-linear regression analysis were used to relate some soil physical (sand, silt and clay contents and color components) and chemical (iron oxide, organic carbon and calcium carbonate contents) to soil spectral responses in the seven bands under dry and wet conditions. There were high correlations levels among the spectral bands showing an overlap of spectral information. Generally, the red (MMR3) and near-infrared (MMR4) bands had the highest correlations with the studied soil properties under dry and wet conditions. Usually, the wet soil condition resulted in higher correlations than that for the dry soil condition over the total spectrum range. The predictive equations for sand, silt and clay and iron oxide contents were satisfactory. For organic carbon and color components, the greatest success was achieved when variation in spectral response within individual samples are smaller than that between soil mapping unit group averages. There was a poor relation between calcium carbonate and spectral response. A comparison of multi-level remotely sensed data collected by SPOT, aircraft, and ground instruments showed a strong agreement among the data sets, which correlated well to fine earth data, except for the SPOT data. Rough soil surfaces showed a reduction in reflectance altitude compared to laser level, and it appears to be directly proportional to the percent shadow in the viewing area measured by SPOT satellite and aircraft.

No description available.

Geology and tunnelling was given by the U.S. Department of Energy (DOE) as the most important criteria in siting the SSC. The impact of ground water on construction and vice-versa is an important part of a sites geologic and tunnelling attributes, and its potential environmental impacts. Because of the site's undeveloped nature, only limited reconnaissance-type investigations of the regions hydrogeology had occurred prior to the siting of the SSC. To overcome this ignorance geological, geotechnical, and geophysical characteristics of the site were used to describe the hydrogeology. A hydrologically ideal site would lie above any aquifers, have little or no surface water interaction, and yet, have an adequate and reliable supply of good quality water nearby. The Maricopa site possesses all of these characteristics while apparently being absent of subsidence due to ground-water withdrawal.

A Thesis submitted to The University of Arizona College of Medicine - Phoenix in partial fulfillment of the requirements for the Degree of Doctor of Medicine. / Since inmates are a population disproportionately affected by HIV, correctional settings are important sites for delivering HIV services. The Maricopa county (Phoenix Area) jail system is the 4th largest in the nation. In 2011, the Maricopa County Correctional Health Service implemented an opt‐out HIV screening program for individuals booked into the Maricopa County Jails (MCJ). The aims of this study were to determine for the years 2012‐2014: • The number of inmates screened for HIV • The HIV positivity rate • The number of newly diagnosed patients • The clinical characteristics of the newly diagnosed HIV positive patients Five to seven days after booking, inmates are offered HIV screening. These laboratory records were used to determine the number of inmates tested and positivity. Prior history of previous HIV diagnosis was obtained from Maricopa public health records. Retrospective chart review of the MCJ health and case management records, including Ryan White forms, was performed to gather gender, age, race/ethnicity, sexual orientation, drug use, homelessness and co‐morbidities of newly HIV‐infected persons, such as Hepatitis C and prior STDs. Categorical factors were compared between groups with the Chi‐square test. Means were compared using a standard t test. P values ≤0.05 were considered significant. A total of 319,575 persons were booked and 46,346 were screened (14.5%) for HIV during the study period. The majority of booked inmates were male (76.9%) and Caucasian (50.8%). The mean age of inmates was 36 years. There were 70 newly HIV‐diagnosed patients. Chi squared and t tests comparing newly diagnosed individuals to the general jail population revealed statistical significance for male gender (p=0.02), African American race (p=0.04), and age (p=0.003). Undiagnosed HIV, including AIDS (CD4 counts <200), is an important issue among individuals booked into the MCJ. Compared to the general jail population, HIV is more likely to be diagnosed in males rather than females, younger patients, and African‐American patients. Additionally, IV drug use, polysubstance abuse, other STDs (particularly syphilis), high risk sexual activity, Hepatitis C and homelessness were common among HIV positive patients. Surveillance should be continued and include more patient education on the importance of screening. Furthermore, targeting high‐risk populations may result in even greater numbers of individuals being diagnosed and treated. Within the next year, all patients at the MCJ will also be offered screening for Hepatitis C, chlamydia, gonorrhea and syphilis. This may also result in more patients agreeing to be screened, and subsequently diagnosed with HIV.

This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.

A Thesis submitted to The University of Arizona College of Medicine - Phoenix in partial fulfillment of the requirements for the Degree of Doctor of Medicine.

Thesis (Ph. D. - Soils, Water and Engineering)--University of Arizona, 1985. / Includes bibliographical references (leaves 179-182).

Thesis (M. S. - Soil, Water and Environmental Science)--University of Arizona, 2004. / Includes bibliographical references (leaves 131-133).

The dynamics of salt accumulation in the soil over time is one of major important information input needed for decision-making in regard to irrigate with saline water. As all waters contain some dissolved salts, during the irrigation these salts tend to concentrate in the soil causing depressed plant growth. Saline irrigation water, low soil permeability, inadequate drainage conditions, low rainfall and poor irrigation management all contribute to the tendency of salt accumulation in the soil. The principal salt accumulation problem of economic importance arises when non-saline soils become saline as result of irrigation. The dynamics of salt accumulation in this study, is based on the model for tracing salt distribution in the soil affected by the quantity and quality of irrigation water, amount of nitrogen and initial soil salinity. To verify the model for tracing salt distribution in the soil and to statistically estimate a crop-production function and soil salinity relation, agronomic data were used from field experiment conducted at the University of Arizona, Maricopa Agricultural Center (MAC), during the 1985 growing season and that utilized cotton variety Delta Pine 61. From the point of view of the response functions and salt accumulation in the soil, many assumptions were made before formulating the models. Results show that (1) no conclusions could be drawn with respect to the model of salt accumulation in the soil, (2) in the case of yield production function and soil salinity relation, the water quantity coeffient had an absolute value greater than one, (3) water quality and nitrogen coefficients had an absolute value less than one, (4) initial soil salinity coefficient had negative value, (5) looking for the best combination amoung the variables inputs, the marginal rate of substitution was greater than the ratio of prices, (6) the time path for soil salinity converge to a steady state conditions, and (7) the profitability of cotton irrigated with drip system is sensitive to yield increases and increases in the price of cotton.

No description available.