Results 11 to 20 of about 1,817,519 (277)
Effect of End Face Inclination Angles of Emitters on Local Head Loss in Drip Irrigation Pipes [PDF]
长江科学院院报[Objective] Taking inline cylindrical emitters as the research object, this study modifies the inclination angle of the emitter’s sidewall end face to investigate the effects of structural optimization on local head loss in drip irrigation pipes ...
WANG Ya-lin, WU Yu-xin, ZHU Shi-jiang, ZHAO Shu-jun, XIA Dong
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Loss of heterozygosity at 9p and p53 immunopositivity in surgical margins predict local relapse in head and neck squamous cell carcinoma [PDF]
International Journal of Cancer, 2011 AbstractA major problem in head and neck cancer surgery is the high rate of local relapse (LR). In at least 25% of the surgically treated head and neck squamous cell carcinoma (HNSCC) patients, a genetically defined preneoplastic lesion, also known as “field,” can be detected in the surgical margins.
Elisabeth Bloemena +2 more
exaly +7 more sources
Vietnam Journal of Science, Technology and Engineering, 2018 Numerical simulation have been carried out to observe and predict the mechanisms of stationary mixed flows in a free surface channel combined with a closed conduit.
Van Nam Nguyen
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ESTIMATION OF THE KINETIC HEAD COEFFICIENT (k) BASED ON THE GEOMETRIC CHARACTERISTICS OF EMITTER PIPES [PDF]
Engenharia Agrícola, 2017 : The objective of this study was to determine the variability of the head loss as a function of the emitter geometry as well as to develop a relation between local head loss caused by the emitter insertion and geometric characteristics of the emitter ...
José H. N. Flores +3 more
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Spontaneous head-movements improve sound localization in aging adults with hearing loss
Frontiers in Human Neuroscience, 2022 Moving the head while a sound is playing improves its localization in human listeners, in children and adults, with or without hearing problems. It remains to be ascertained if this benefit can also extend to aging adults with hearing-loss, a population in which spatial hearing difficulties are often documented and intervention solutions are scant ...
Elena Gessa +12 more
openaire +5 more sources
Remote Sensing, 2023 In airport ground-traffic surveillance systems, the detection of an aircraft and its head (AIH) is an important task in aircraft trajectory judgment. However, accurately detecting an AIH in high-resolution optical remote sensing images is a challenging ...
Fei Song +3 more
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Modelling head loss along emitting pipes using dimensional analysis [PDF]
Engenharia Agrícola, 2015 Local head losses must be considered in estimating properly the maximum length of drip irrigation laterals. The aim of this work was to develop a model based on dimensional analysis for calculating head loss along laterals accounting for in-line drippers.
Acácio Perboni +3 more
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Journal of Groundwater Science and Engineering, 2022 Discrete fracture models are used for investigating precise processes of groundwater flow in fractured rocks, while a disc-shaped parallel-plates model for a single fracture is more reasonable and efficient for computational treatments. The flow velocity
Ci-xiao Qu, Ming-yu Wang, Peng Wang
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Analysis of energy loss in the helical hedge flow channel of fruit tree root emitter
Scientific Reports, 2023 This paper proposes the design of a helical hedge flow channel with a high energy loss, which shows promising potential for application in fruit tree root emitters.
Jun Zhang +3 more
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Physical modelling of energy losses at surcharged three-way junction manholes in drainage system
Water Science and Technology, 2022 Motivated by the observation that vortex flow structure was evident in the energy loss at the surcharged junction manhole due to changes of hydraulic and geometrical parameters, a physical model was used to calculate energy loss coefficients and ...
Qijie Li +5 more
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