A basic system dynamics model for collective irrigation management is proposed, which is aimed at improving the understanding of dynamic processes in collective irrigation systems. In particular, the problem of free-riding on water in irrigation systems is addressed. A feedback system is introduced, which builds on the concept of a critical mass and integrates a number of influence factors that...

Purpose: The aim of this study was to determine the effects of inspiratory muscle training (IMT) on exercise tolerance, inspiratory muscle fatigue and the perception of dyspnea in asthmatic individuals. Methods: Using a matched, double-blind, placebo-controlled design, 15 clinicallydiagnosed asthmatics underwent either 6 wks of inspiratory muscle training (IMT, n=7) consisting of 30 breaths twi...

background diabetes mellitus is a widespread disease. its vascular complications can be characterized by arteriosclerosis formation in carotid arteries. due to its delayed diagnosis resulting in more complications in iran, it seems that screening diabetic patients is mandatory. objectives the aim of this study was to compare the intima-media thickness (imt) of carotid artery in diabetic and non...

BACKGROUND Nasal saline irrigation is a common component of chronic rhinosinusitis (CRS) management. The benefits of irrigation have been noted in primary and postoperative management of CRS. The irrigation consists of physiologic saline solution applied into a nostril via a squeeze-bottle, a bulb syringe, or a neti pot. As the saline flows through the nasal cavity from anterior to posterior, t...

A laboratory soil column experiment was first conducted to analyze water movement in latosol of sugarcane field under drip irrigation from single-point source at different emitter discharge rates. Next, a mathematical model of soil water movement under drip irrigation from single-point source was built using Hydrus-3D, which could accurately simulate the shape of the wetted soil volume and the ...

The relative reduction in potential ground-water contamination due to pesticides at several sites in Utah was determined by comparing alternative irrigation system designs, water management practices and pesticides. Alternative sprinkler irrigation distribution coefficients were used to estimate infiltration depths. The movement of pesticides through soils following sprinkler irrigations was si...

Salmonella enterica is one of the major food-borne pathogens associated with ready-to-eat fresh foods. Although polluted water might be a significant source of contamination in the field, factors that influence the transfer of Salmonella from water to the crops are not well understood, especially under conditions of low pathogen levels in water. The aim of this study was to investigate the shor...

Article available on line / Article disponible en ligne à l’adresse : -------------------------------------------------------------------------------------------------------------------------------------------------------------------------http://om.ciheam.org/article.php?IDPDF=1600190 ---------------------------------------------------------------------------------------------------------------...