abstract one of the ways to increase economic and environmental efficiency of drainage systems is water table management. water table management consists of, controlled drainage and subirrigation. this study examines the effect of controlled drainage on yield, root distribution pattern and water use efficiency of maize (sc 704) in karaj. the experiment was performed as a randomized complete des...

Insufficient water is the greatest limitation to crop production and choice of crops grown in the Northern Great Plains. Supplemental irrigation can overcome this limitation. Uncertainties about the drainage capacity of flne-textured subsoils and the effect of irrigation on soil properties has impeded irrigation development. In this study we quantified salinity changes in soils with fine-textur...

AIM To evaluate the surgical treatment of a chronic subdural haematoma (CSDH). We compared two surgical treatments of CSDH: burr-hole craniostomy irrigation with and without drainage. MATERIAL AND METHODS We retrospectively studied patients with chronic subdural haematomas admitted to our hospital. A total of 87 patients underwent surgery: 57 were treated via burr-hole irrigation with postope...

abstract soil salinity within plant root zone is one of the most important problems that cause reduction in yield in agricultural lands. in this research, salinity in soil profile was simulated in tabriz irrigation and drainage network using saltmod and artificial neural networks (anns) models. based on initial spatial distribution of salinity in soil profile, studying area was divided to 4 dif...

the main objective followed in this research was to study some of the factors influencing water users' participation in management of the irrigation and drainage networks on the lands under jiroft dam. the kind of research method of the study was a descriptive- correlational one. the statistical population of the study consisted of all the water users of irrigation and drainage networks ac...

the main purpose of this study was analyzingthe promoting factors of the developmentin participatory irrigation managementin the irrigation network of miandarband villages located in kermanshah county. the research population consisted of all beneficiaries of this area (n=417). by using the cochran's formula, 126 people were chosen through a random stratified sampling method with appropria...

OBJECTIVE One or two burr-hole craniostomies with subgaleal or subdural drainage system and irrigation are the most common methods for surgical treatment of CSDH. The aim of this study is to compare the advantages or disadvantages of these techniques used for CSDH. METHODS Seventy patients were treated by burr-hole subdural drainage or subgaleal drainage system with irrigation. Our patients w...