Results 11 to 20 of about 5,238 (206)

The Effect of Fertigation on Clogging of Emitters in Drip Irrigation System [PDF]

open access: yesعلوم و مهندسی آبیاری, 2015
One of the potential advantages of drip irrigation is allowing the use of fertilizer and poison with irrigation water. In this study, the effect of fertilizers on clogging dripper and drip irrigation system performance has been investigated.
Farideh Ansari samani   +1 more
doaj   +1 more source

Can use of pictograms reduce liquid medication administration errors by mothers? An interventional study

open access: yesBMC Psychology, 2021
Background Liquid medication dosing errors (LMDE) made by caregivers affect treatment in children, but this is not a well-studied topic in many low-and middle-income countries including in India.
Pawan Patidar   +2 more
doaj   +1 more source

Large-Scale Laboratory Experiments on Mussel Dropper Lines in Ocean Surface Waves

open access: yesJournal of Marine Science and Engineering, 2020
The rapid growth of marine aquaculture around the world accentuates issues of sustainability and environmental impacts of large-scale farming systems. One potential mitigation strategy is to relocate to more energetic offshore locations.
Rebekka Gieschen   +5 more
doaj   +1 more source

YOLOv5s-D: A Railway Catenary Dropper State Identification and Small Defect Detection Model

open access: yesApplied Sciences, 2023
High-speed railway catenaries are vital components in railway traction power supply systems. To ensure stable contact between the pantograph and the catenary, droppers are positioned between the messenger wire and contact line. The failure of one or more
Ziyi Li   +5 more
doaj   +1 more source

Study on the Influence of Different Dropper Models in Pantograph–Catenary System on Dropper Load Simulation

open access: yesMachines
The dropper load directly influences the fatigue mechanism of the high-speed catenary system. A proper dropper model for a pantograph–catenary system can be used to accurately and efficiently investigate this phenomenon.
Like Pan   +5 more
doaj   +1 more source

Research on time–frequency characteristics of contact force based on wavelet transform

open access: yesIET Electrical Systems in Transportation, 2022
When a train runs at high speed, affected by the structural characteristics of the catenary, the contact force changes periodically with span and dropper spacing.
Fang He, Jian Zhang
doaj   +1 more source

Machine Vision Based Monitoring of Breakage and Slack Faultfor High Speed Railway Dropper

open access: yesKongzhi Yu Xinxi Jishu, 2021
Dropper’s breakage and slack threaten the stability of high-speed railway power supply system and reduce system safety. Disappointingly, monitoring droppers and guiding maintenance are performed by manual inspection, and it has the problems of low ...
LIU Shiwang, HU Yunqing, LIN Jun
doaj  

Severe corneal burn due to the accidental application of salicylic acid packed in a plastic dropper bottle

open access: yesBiomédica: revista del Instituto Nacional de Salud, 2020
Eye burns due to the accidental application of pharmacological or nonpharmacological substances packaged in plastic dropper bottles have been described for more than three decades and continue to occur.
Virgilio Galvis   +6 more
doaj   +1 more source

The Impact of the COVID‐19 Pandemic on Childhood Cancer Survival: A Population‐Based Assessment of Survival Patterns Between 2015 and 2023 in Germany

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Numerous international studies have reported declines in new cancer diagnoses, delayed diagnoses and disruptions in cancer treatment following the implementation of COVID‐19 pandemic public health measures, raising concerns that these effects may ultimately contribute to increased cancer mortality.
Friederike Erdmann   +8 more
wiley   +1 more source

Research on online inspection of pantograph and catenary based on deep learning

open access: yes机车电传动, 2022
The pantograph-catenary system is a key part of power supply for electric locomotive, and its operating status determines the current receiving quality of electric locomotive, as well as safety and efficiency of trains.
ZHOU Zhaoan, LI Shuzhi
doaj  

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