نتایج جستجو برای: irrigation networks

تعداد نتایج: 469567  

2015
Yu-Chi Liu Lasitha Jayasinghe Heng Pei Ang Nyein Chan Lwin Gary Hin Fai Yam Jodhbir S. Mehta

This study aimed at evaluating the effect of intraoperative corneal pocket irrigation in small incision lenticule extraction (SMILE) and compares it to that in femtosecond laser-assisted in situ keratomileusis (FS-LASIK). Sixteen rabbit eyes underwent a SMILE procedure, with 8 eyes having corneal pocket irrigation, while the other 8 eyes were without irrigation. Another 16 eyes underwent a FS-L...

2010
Maurits Willem Ertsen

Irrigation systems were clearly important in ancient times in supplying crops with water. This requires physical distribution facilities and socio-political arrangements to coordinate between actors. Resulting systems are highly diverse, and are being studied extensively within archeology and history. Whether initiated by a central authority or emerging from small-scale initiatives, irrigation ...

2017
Shibiao Fang Renfu Jia Wenrong Tu Zhilin Sun

Changes in irrigation water-use efficiency are related closely to agricultural development. Clarifying the driving factors of irrigation water-use efficiency change at different agricultural development stages is beneficial for buffering the contradiction between the protection of water resources and massive agricultural water consumption. It also has theoretical and application value when it c...

2017
Allen L. Thompson Derrel L. Martin John M. Norman Judy A. Tolk James R. Gilley Arlan D. Schneider

Field water balance measurements using monolithic lysimeters were used in validating the Cupid-DPE model for predicting water loss partitioning during sprinkler irrigation from a moving lateral system fitted with impact sprinklers and spray nozzles. The model combines equations governing water droplet evaporation and droplet ballistics with a comprehensive plant-environment energy balance model...

2018
Xuexin Xu Yinghua Zhang Jinpeng Li Meng Zhang Xiaonan Zhou Shunli Zhou Zhimin Wang

Improving winter wheat grain yield and water use efficiency (WUE) with minimum irrigation is very important for ensuring agricultural and ecological sustainability in the Northern China Plain (NCP). A three-year field experiment was conducted to determine how single irrigation can improve grain yield and WUE by manipulating the "sink-source" relationships. To achieve this, no-irrigation after s...

2009
Ganesh P. Shivakoti Elinor Ostrom

Since the 1970's, a large number of individual field studies of diverse irrigation systems have been completed in Nepal. Some of these studies were undertaken by masters or doctoral students and are based on extensive periods of time in the field. Others were written on the basis of shorter periods in the field: rapid rural appraisals, brief reports, and field-site visits by expatriate advisors...

Journal: :American family physician 2009
David Rabago Aleksandra Zgierska

Saline nasal irrigation is an adjunctive therapy for upper respiratory conditions that bathes the nasal cavity with spray or liquid saline. Nasal irrigation with liquid saline is used to manage symptoms associated with chronic rhinosinusitis. Less conclusive evidence supports the use of spray and liquid saline nasal irrigation to manage symptoms of mild to moderate allergic rhinitis and acute u...

2016
Pablo Castelo-Baz Purificación Varela-Patiño Giuseppe Cantatore Ana Domínguez-Perez Manuel Ruíz-Piñón Ramón Miguéns-Vila Benjamín Martín-Biedma

BACKGROUND The efficacy of endodontic irrigation procedures can be compromised by the complexity of the root canal system. Delivering irrigants to the apical third of curved canals presents a particular challenge to endodontists. This study compared the effects of two ultrasonic irrigation techniques on the penetration of sodium hypochlorite into the main canal and simulated lateral canals of c...

Journal: :Irrigation Science 2021

Pressurised irrigation networks with a certain degree of automation allow centralized fertigation and maintenance operations such as cleaning subunits preventing the proliferation invasive species zebra mussels. Until now, there is no methodology that guarantees total network substance in shortest possible time. In same way, it does not exist to guarantee reaching all consumption points concent...

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