the application of ion current signals is one of the most recent approaches in engine management systems. by applying a small constant dc voltage across the electrodes of the spark plug and measuring the current through the electrode gap, the state of gas may be measured and investigated. in this paper a computer code is developed in order to analyze the state of gas during the combustion perio...

The application of ion current signals is one of the most recent approaches in engine management systems. By applying a small constant DC voltage across the electrodes of the spark plug and measuring the current through the electrode gap, the state of gas may be measured and investigated. In this paper a computer code is developed in order to analyze the state of gas during the combustion p...

abstractinduced total pressure by flow, including mean and fluctuating components, around a selected chute block in saf stilling basins downstream of an ogee spillway was studied. several pressure holes were selected on various faces of a selected chute block to get enough information regarding the total pressure field. this paper reports the results of an experimental work and measurement of m...

BACKGROUND Several footwear design characteristics are known to have detrimental effects on the foot. However, one characteristic that has received relatively little attention is the point where the sole flexes in the sagittal plane. Several footwear assessment forms assume that this should ideally be located directly under the metarsophalangeal joints (MTPJs), but this has not been directly ev...

BACKGROUND Respiratory dynamics may be monitored and evaluated indirectly by measuring the peak inspiratory pressure and plateau pressure. In this study, the respiratory dynamics of patients undergoing spinal surgery using a Jackson surgical table were observed with a device after converting their position from supine to prone. The effects of the dynamic compliance and airway resistance were ob...

We investigated whether the peak position (mmH2O) of tympanogram (TG) always corresponds to the actual middle ear pressure (MEP). Using especially designed plastic models (Endo et al., 1983) to simulate the human middle ear, the experimental results outlined in paragraph (1) and (2) led to the conclusions found in pragraph (3). (1) The position (mmH2O) of TG peak was almost equivalent to the pr...

An early return of the reflected component in the arterial pulse has been recognized as an important indicator of cardiovascular risk. This study aimed to determine the effects of blood pressure and sex factor on the change of wave reflection using Gaussian fitting method. One hundred and ninety subjects were enrolled. They were classified into four blood pressure categories based on the systol...

Lung function of patients is one of the most important issues for anesthesiologists during the perioperative period. This study aimed to evaluate the effects of prone position on lung function of patients undergoing mechanical ventilation under total intravenous anesthesia. Sixty patients undergoing elective surgery were randomly divided into 2 groups: supine group (receiving operation in supin...

BACKGROUND Paralysis of the common peroneal nerve is one of the relatively common nerve injuries related to the lithotomy position with the use of a knee-crutch/leg-holder system. Several risk factors have been implicated in lithotomy position-related common peroneal nerve paralysis during operation. MATERIALS AND METHODS In the present study, 21 young healthy volunteers participated in the i...