This article studies the legal regime of groundwater by analyzing the context of integrated water resources management and recognizing its definition and characteristics.Furthermore, it analyses the ownership of ground water, the planning regime applicable, the exploration and exploitation activities, their authorization certificates, the activity of supervision over them, and finally the article describes the special schemes for management and limitation recognized in Peruvian law. / En el presente artículo se estudia el régimen jurídico de las aguas subterráneas, analizando el marco de la gestión integrada de recursos hídricos y reconociendo su definición y particularidades.Asimismo, se analiza la titularidad de las aguas subterráneas, el régimen de planificación aplicable, las actividades de exploración y explotación, sus títulos habilitantes, la actividad de supervisión que sobre ellas recae, para finalmente, dejar anotados los regímenes especiales de gestión y limitación reconocidos en el ordenamiento jurídico peruano.

Made available in DSpace on 2014-10-09T12:30:33Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:00:21Z (GMT). No. of bitstreams: 1 01264.pdf: 8485096 bytes, checksum: 06ebf0338345738ac37beff9370e1213 (MD5) / Tese (Doutoramento) / IPEN/T / University of California, Berkeley, USA

Made available in DSpace on 2014-10-09T12:40:56Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:01:27Z (GMT). No. of bitstreams: 1 04024.pdf: 3628243 bytes, checksum: 85a871f2396f235238f333eefec1e8ab (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

Made available in DSpace on 2014-10-09T12:37:30Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:03:31Z (GMT). No. of bitstreams: 1 05171.pdf: 1226633 bytes, checksum: a8a8ac2deed7ddd884b8a9228185c81d (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

Main objective of the diploma thesis was to observe the concentrations of selected types of drugs in the environment around the area of the village Horní Beřkovice. This goal was achieved by monitoring of the drugs concentration in surface and ground waters at Horní Beřkovice site. Monitoring system allowed to detect the passage of pollution from the source of the contamination, through sewage treatment plant, the unsaturated zone and aquifer to a potential user of contaminated groundwater. The diploma thesis is based on the field data from TACR project. I have analyzed data from the six samplings at the area of the village Horní Beřkovice with regard to the observed drugs or their residues in surface and ground waters. I have compared the results with data from the sewage treatment plants in the river basin of Želivka. Keywords: ground water, surface water, sewage treatment plant, drugs, contamination

Magister Scientiae Dentium - MSc(Dent) / BACKGROUND: Fluorine is an abundant trace element in the Earth’s crust. The presence of fluorine in bedrocks is the primary source fluoride in ground water, though fluoride occurrence varies with the different rock types. High concentrations of fluoride ions are found in regions of volcanic activities. Volcanoes are the main persistent natural source of fluoride in ground water and in the atmosphere. The occurrence of high concentrations of fluoride in ground water has been reported worldwide. Dental fluorosis is a developmental disturbance of enamel that results from ingestion of high amounts of fluoride during tooth mineralization. Consumption of untreated fluoridated ground water remains the main cause of dental fluorosis in rural settlements. AIM: To establish the risk factors and knowledge of dental fluorosis in three communities of the Far North Region of Cameroon. METHODOLOGY: This study was descriptive and cross-sectional study with an analytic component and was conducted in three communities in Far North Region of Cameroon. The study population was a convenience sample irrespective of age, but who must have been living in the selected study sites for a minimum of 6 to 8 years. Structured questionnaires were administered to elicit socio-demographic characteristics, perceptions dental fluorosis and oral health practices. Oral examination was conducted to determine the extent of dental fluorosis that was scored according to the Thylstrup and Fejerskov index. Participants declared their water sources and water samples were obtained from these sources. Samples of commercial bottled mineral water was purchased from various local outlets. These samples were sent to a certified laboratory for fluoride analysis and are reported in milligrams of fluoride per litre.

A series of five east-west and two north-south hydrostratigraphic cross sections were drawn from drillers' logs of water wells within the southern half of Cache Valley, Utah. These cross-sections demonstrate that ground water flow to streams is restricted by a continuous low- II permeability layer, nearly 100-feet thick. This layer was correlated to the lake-bottom deposits of the Bonneville (30,000 -13,000 years ago) and Little Valley (140,000 - 90,000 years ago) cycles of the ancient Lake Bonneville. The most productive aquifers in the valley, collectively termed the principal aquifer , are in the southeast corner , approximately between Smithfield and Hyrum, and between the eastern valley margin and the valley center. Sands and gravels of the principal aquifer were deposited as alluvial fans and deltas by streams draining the Bear River Range. Ground water chemistry in the principal aquifer system is of the calcium-magnesium bicarbonate type with total dissolved solids (TDS) averaging about 300 ± 100 mg/L. TDS and the relative proportions of sodium, potassium, and chloride increase down flowpath, from recharge areas in the east to discharge areas in the west. Oxygen-18 (18O) and deuterium (D) analyses were performed on precipitation samples at three locations on the east valley benches, four surface water samples from streams entering the valley, and fourteen ground water samples from either wells or springs. Precipitation and surface water values generally plotted along the Global Meteoric Water Line (GMWL), although the precipitation values plotted significantly lower on the GMWL than the surface water values. Of the ground water samples, twelve from the principal aquifer generally clustered near the surface water data points, suggesting that water from streams, rather than infiltrating precipitation, recharges the principal aquifer. Twelve ground water samples were analyzed for tritium. The tritium values of eight samples from wells or springs in the principal aquifer suggest recharge after 1952. Two samples with tritium values dating prior to 1952 are from wells in the principal aquifer, and two are from wells west of the principal aquifer. Four samples were analyzed for 14C. Two of these wells were completed in the principal aquifer and two west of it. Correcting for partial carbon dilution, the age difference between the different areas is on the order of tens of thousands of years.

This study involved a geographic information systems (GIS) approach to modeling ground water pollution potential in the Southern Edwards Aquifer Region in Texas. The DRASTIC ground water model was analyzed using two methods. First, the effects of adding land cover data to the drastic model were evaluated. In the second approach, the effects of the removal of DRASTIC variables were evaluated. Six, five, and four variable models were generated and analyzed.

No description available.

No description available.