نتایج جستجو برای: irrigation rates

تعداد نتایج: 476343  

2011
N. Kannan J. Jeong R. Srinivasan

Simulating irrigation systems by accounting for various water loss rates is necessary while modeling the hydrology of cultivated canal-irrigated watersheds. The existing approaches to modeling canal irrigation use situation-specific optimization procedures. In addition, they are focused on a water management perspective rather than a hydrologic perspective. In this study, an approach is develop...

Journal: :Obstetrics and gynecology 2012
Reagan Viney Christine Isaacs David Chelmow

OBJECTIVE To determine whether avoiding intra-abdominal irrigation at cesarean delivery will decrease rates of intraoperative and postoperative gastrointestinal disturbance without increasing postoperative morbidity. METHODS This was a randomized controlled trial of patients undergoing cesarean delivery. Patients were randomized to irrigation after closure of the hysterotomy compared with no ...

Journal: :Cadernos de saude publica 2003
Davi Félix Martins Maurício L Barreto

Studies in African countries have shown an association between irrigation projects and the spread of schistosomiasis mansoni and haematobium. The aim of this study was to investigate the potential association between irrigation levels and the occurrence and spread of Schistosoma mansoni infection in the State of Bahia. Two forms of irrigation were developed in the State of Bahia: the first is c...

2018
Susan A. O'Shaughnessy Steven R. Evett Paul D. Colaizzi Terry A. Howell S. A. O’Shaughnessy S. R. Evett P. D. Colaizzi T. A. Howell

Automatic irrigation scheduling has been demonstrated using wired sensors and sensor network systems with subsurface drip and moving irrigation systems. However, there are limited studies that report on crop yield and water use efficiency resulting from the use of wireless networks to automatically schedule and control irrigations. In this 2011 study, a multinode wireless sensor network (WSN) s...

2013
Maite Arroita Francisco A. Comín Carmen Lorente Daniel Merchán Selene Muñiz Jonatan Val Arturo Elosegi

18 Many dryland areas are being converted into intensively managed irrigation crops, what 19 can disrupt the hydrological regime, degrade soil and water quality, enhance siltation, 20 erosion and bank instability, and affect biological communities. Still, the impacts of 21 irrigation schemes on the functioning of terrestrial and aquatic ecosystems are poorly 22 understood. Here we assess the ef...

2006
C. M. Baldwin H. Liu

A 2-year greenhouse study was conducted at Clemson University, Clemson, S.C., in 2003 and 2004 to determine drought responses of six bermudagrass (Cynodon spp.) cultivars at four irrigation intervals. Cultivars selected from the 2002 National Turfgrass Evaluation Program Bermudagrass Trial were ‘SWI-1012’, ‘Arizona Common’, ‘Tift No.3’, ‘Tifsport’, ‘Aussie Green’, and ‘Celebration’. Treatments ...

Journal: :Journal of environmental quality 2011
John P Hanzas Russell L Jones Jeffrey W White

An irrigation runoff study on a residential lawn was conducted in California, northeast of Sacramento, during the summer and fall of 2008 to investigate the contribution of turf uses of pyrethroids to residues in Californian urban creek sediments. This study examined how over irrigation (i.e., irrigation that produces runoff) in the summer season may transport recently applied pyrethroids. The ...

Journal: :Journal of environmental quality 2007
Lincoln Zotarelli Johannes M Scholberg Michael D Dukes Rafael Muñoz-Carpena

Proper N fertilizer and irrigation management can reduce nitrate leaching while maintaining crop yield, which is critical to enhance the sustainability of vegetable production on soils with poor water and nutrient-holding capacities. This study evaluated different methods to measure nitrate leaching in mulched drip-irrigated zucchini, pepper, and tomato production systems. Fertigation rates wer...

Journal: :The American journal of emergency medicine 2002
Beatrix Chandra Bansal Robert A Wiebe Sebrina D Perkins Thomas J Abramo

This study was designed to compare the infection rates of simple lacerations irrigated with tap water versus sterile normal saline before repair. Patients with simple lacerations to an extremity that were less than 8 hours from injury were prospectively enrolled. Exclusions from the study were: dog bites, hand lacerations, immunocompromised patients, and those on antibiotics at the time of inju...

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