21 Wastewater contains a large amount of pharmaceuticals, pathogens, and antimicrobial 22 resistance determinants. Only little is known about the dissemination of resistance 23 determinants and changes in soil microbial communities affected by wastewater irrigation. 24 Community DNA from Mezquital Valley soils under irrigation with untreated wastewater for 25 0 to 100 years was analyzed by quan...

INTRODUCTION Remote magnetic navigated ablation has proven its feasibility in a large group of arrhythmias. Until now only scarce data are available on the use for atrial flutter. In this study we compared remote magnetic navigation (RMN), using non-irrigated and irrigated tip catheters, to manual radiofrequency ablation for ablating typical atrial flutter. METHODS The 3 study groups consiste...

0099-1112/07/7309–1029/$3.00/0 © 2007 American Society for Photogrammetry and Remote Sensing Abstract This study established spectral matching techniques (SMTs) to determine land-use and land-cover (LULC) and irrigated area classes from historical time-series (HTS-LULC) AVHRR 0.1-degree pathfinder satellite sensor data. The approach for HTS-LULC mapping and characterization was to develop “targ...

A field soil water balance model is developed for non-ponded “aerobic rice” in North China Plain. Increasing water scarcity necessitates the development of irrigated rice systems that require less water than traditional flooded rice. The aerobic rice is an effort to save water in response to growing worldwide water scarcity with the pressure to reduce water use and increase water productivity i...

This paper looks at differences in spatial and temporal variation of rice yields in China and Brazil. We find that rice yields in China have converged over time and that rice production has become more and more homogeneous. In contrast, rice yields in Brazil have diverged over time, primarily due to variations in upland rice yields. Three hypotheses are put forward to explain the different beha...

in tunisia, kalâat el andalous irrigated district is one of the most affected areas by salinization. the objective of this study was to predict the root zone salinity (over 10 years) in this area using the saltmod simulation model for subsurface drainage system. saltmod is based on water balance, salt balance model, and seasonal agronomic aspects. in the pilot area, irrigated vegetables crops s...

ArcGIS Desktop* and ArcGIS Workstation* were used to extract statistically significant information from various geospatial data sets for input into a statistical model of groundwater vulnerability. The product of this effort was a probability map that identified areas of vulnerability to groundwater-quality degradation. This information is of interest to a variety of water professionals because...

The Yellow River Water Allocation Management Method was put into place in 1998 to decrease the water amount used by upstream areas and provide more downstream regions. Rainfall River’s infiltration are main groundwater supply area of River. table has continued since 1979, extracted for irrigation is reason this. Whether increased river could improve decreased level uncertain. Therefore, we remo...

introduction agricultural research is important and one of the determinant factors of development of technologies in agricultural sector. among agricultural research disciplines, breeding programs, especially, wheat breeding programs are one of the applied approaches in improving of production and food security. based on a study by byerlee & traxler (1995), economic benefits and internal rate o...

The aim of this study was to assess the magnitude of evaporation loss from the Agricultural Water Reservoirs (AWRs) for Irrigation at a regional scale and to analyse its impact on water storage efficiency. To this end, we identified the extant AWRs for irrigation in the Segura River Basin (SRB) in southeastern Spain, and calculated the water loss from each AWR per month and year. In order to ac...