نتایج جستجو برای: suction

تعداد نتایج: 9041  

2014
Wen-Li Chen Hui Li Hui Hu

An experimental investigation was conducted to assess the effectiveness of a suction flow control method for vortex-induced vibration (VIV) suppression. The flow control method uses a limited number of isolated suction holes to manipulate the vortex shedding in the wake behind a circular cylinder in order to reduce the unsteadiness of the dynamic wind loads acting on the cylinder. The experimen...

Journal: :The Journal of experimental biology 2016
Gabriel Cerqueira Alves Costa Adriana Coelho Soares Marcos Horácio Pereira Nelder Figueiredo Gontijo Maurício Roberto Viana Sant'Anna Ricardo Nascimento Araujo

Ornithodoros rostratus is an argasid tick and its importance is based on its hematophagy and the resulting transmission of pathogens such as Rickettsia rickettsii and Coxiella burnetii to its vertebrate hosts. In the face of a lack of physiological studies related to hematophagy in argasid ticks, this paper aims to identify and characterize the events that occur throughout the feeding by O. ros...

Journal: :Age and ageing 2005
Amit Arora Christine Roffe Peter Crome

Rechecking the position of the nasogastric tube after oropharyngeal suction is not common practice. Our patient deteriorated after oropharyngeal suction was performed, whilst nasogastric feeding continued. We suggest that nasogastric feeding should be stopped during oropharyngeal suction and the tube position should be checked every time an oropharyngeal suction is performed.

2014
K. T. Ooi T. N. Wong C. T. Khoo

I, Bedok South Road, Singapore 1646 This study attempts to qualitatively quanti:(y the thermal design aspects of the suction tube of a hermetic refrigeration compressor with high shell pressure configuration. The effects on heat transfer and fluid flow which affect the design dimensions and material selection of the suction tube will be shown and discussed. Results obtained suggested that the t...

A numerical model is developed to simulate the transport phenomena in the flow channel between parallel plates with porous and non-porous (or impermeable) walls. The continuity and momentum equations were solved first, assuming the wall Reynolds number in the range of with the suction or injection of air at a speed equal to the uniform inlet velocity. The results show that at constant inlet and...

Introduction: Nursing interventions have a direct impact on patients’ clinical status. Nurses should be aware of the dangers of intubation tube suction and have continuous training in this field. The aim of this study was to determine the effect of education standard suction with small group on nurses’ performance in intensive care unit. Methods : This was a quasi-experimental study which was ...

Journal: :The Journal of experimental biology 2008
Christopher D Marshall Kit M Kovacs Christian Lydersen

Feeding kinematics, suction and hydraulic jetting capabilities of bearded seals (Erignathus barbatus) were characterized during controlled feeding trials. Feeding trials were conducted both on land and in water, and allowed a choice between suction and biting, but food was also presented that could be ingested by suction alone. Four feeding phases, preparatory, jaw opening, hyoid depression and...

Journal: :iranian journal of nursing and midwifery research 0
farkhondeh yousefnia-darzi farideh hasavari tahereh khaleghdoost ehsan kazemnezhad-leyli malahat khalili

abstract background: accumulation of secretions in the airways of patients with an endotracheal tube and mechanical ventilation will have serious consequences. one of the most common methods of airway clearance is endotracheal suctioning. in order to facilitate discharge of airway secretion resulting in promotion of gas exchange, chest physiotherapy techniques can be used at the time of expirat...

2015
Wen-Li Chen Yong Cao Hui Li Hui Hu

This paper numerically investigates the effectiveness of the control of steady suction on a stationary circular cylinder with several isolated suction holes on the surface at a subcritical Reynolds number. The control effectiveness as a function of the azimuthal position, spanwise spacing and suction flow rate of the suction holes on the control of the aerodynamic forces on the cylinder and the...

2010
RALF MESSING MARKUS J. KLOKER M. J. Kloker

Direct numerical simulations are employed to investigate the effects of discrete suction orifices at the wall on the disturbance evolution in laminar three-dimensional boundary-layer flows with favourable pressure gradient. Suction panels with many suction orifices can excite unstable crossflow (CF) modes even if the orifice spacing is smaller than the chordwise/spanwise wavelengths of unstable...

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