نتایج جستجو برای: spray angle

تعداد نتایج: 150808  

The purpose of this paper is to obtain the tracking interval for difference of expected Kullback-Leibler risks of two models under Type II hybrid censoring scheme. This interval helps us to evaluate proposed models in comparison with each other. We drive a statistic which tracks the difference of expected Kullback–Leibler risks between maximum likelihood estimators of the distribution in two diff...

Journal: :Energies 2021

This study aimed to investigate the influence of flash-boiling conditions on liquid propane sprays formed by a multi-hole injector at various injection pressures. The focus was spray structures, which were analysed qualitatively and quantitatively means spray-tip penetration global angle. effect flash boiling evaluated in terms trends observed for subcooled conditions. Propane injected commerci...

2013
M. M. Seraj M. S. Gadala

This study presents a systematic analysis of wetted region due to cooling of aluminum plate by water spray impingement with respect to different water flow rates, spray nozzle heights, and subcooling. Unlike jet impingement, the wetting is not commenced upon spray impingement and there is a delay in wetness of hot test surface. After initiation, the wetting (black zone) progresses gradually to ...

Journal: :Journal of the American Mosquito Control Association 2012
Bradley K Fritz W Clint Hoffmann Keith Haas Jane Bonds

Field trials were conducted to demonstrate the need for correcting sampled spray concentration data for sampler collection efficiencies and estimated spray exposure levels in mosquito bioassays for cage interference effects. A large spray block was targeted with aerial spray treatments of etofenprox in order to create a gradient in both spray concentration and mortality. Spray concentrations we...

2006
Heping ZHU Huseyin GULER

Fungicides manufactured to control soybean rust are effective; however, successful control of this disease will mostly depend on proper application methods. Spray coverage and deposition from 9 application equipment/spray nozzles were analyzed. In general, the spray treatments with air assistance were more effective in spraying rust fungicides than the treatments with the conventional boom spra...

Journal: :Coatings 2021

The film formation during the spray/wall impingement has attracted more attention. present study investigated characteristics of pressure-swirl nozzle by applying contact-free optical method. According to experimental results, distance had a slightly significant effect on actual spray angle than mass flow rate, and maximum changing value was 34.6°. bulge at center surface became insignificant w...

Journal: :Colloids and surfaces. B, Biointerfaces 2016
Adeola O Adebisi Waseem Kaialy Tariq Hussain Hiba Al-Hamidi Ali Nokhodchi Barbara R Conway Kofi Asare-Addo

This work explores the use of both spray drying and d-glucosamine HCl (GLU) as a hydrophilic carrier to improve the dissolution rate of piroxicam (PXM) whilst investigating the electrostatic charges associated with the spray drying process. Spray dried PXM:GLU solid dispersions were prepared and characterised (XRPD, DSC, SEM). Dissolution and triboelectric charging were also conducted. The resu...

2012
Man Chiu Fung William Yang Jiyuan Tu

Spray atomization is a common process found in different industries, where sprays under high injection pressure are widely recorded in the literature. Nonetheless, research on spray breakup mechanism under low pressure in pharmaceutical industry is still relatively rare. Numerical model in the Lagrangian approach was modified for simulating the spray formation from a nasal spray device in the c...

2017
Angela Bartel Mika Järvinen Arshe Said

This study investigates a new concept of producing precipitated calcium carbonate (PCC) from steelmaking slag and carbon dioxide via a spray carbonation process. The presented laboratory-scale spray carbonation test reactor uses a spray nozzle to disperse fine droplets of a Ca-rich solution into a spray tower, where calcium carbonate precipitates as a result of the reaction between calcium and ...

2016
Ariane Bérard Gregory S. Patience Gérald Chouinard Jason R. Tavares

Apple growers face new challenges to produce organic apples and now many cover orchards with high-density polyethylene (HDPE) nets to exclude insects, rather than spraying insecticides. However, rainwater- associated wetness favours the development of apple scabs, Venturia inaequalis, whose lesions accumulate on the leaves and fruit causing unsightly spots. Treating the nets with a superhydroph...

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