BACKGROUND The relative importance of signs and symptoms in the diagnosis of otitis media has not been adequately evaluated. This has led to a large degree of variation in the criteria used to diagnose otitis media, which has resulted in inconsistencies in clinical care and discrepant research findings. METHODS A group of experienced otoscopists examined children presenting for primary care. ...

Metal forming processes, compared with machining ones, reduce production steps and increase manufacturing speed in addition to saving raw material. In this paper, forming process of column of a steering mechanism is investigated by finite element analyses and experimental tests; and optimum die design parameters are found. Forming process parameters including die opening angle, bearing length, ...

Tube uneven radial deformation along the axial direction is one of main technical problems tube electromagnetic bulging, which restricts wide advancement this technology. In order to improve uniformity deformation, a bulging method based on concave magnetic field shaper presented in paper. Based theory and shaper, an structure coupling finite element model built using COMSOL commercial software...

metal forming processes, compared with machining ones, reduce production steps and increasemanufacturing speed in addition to saving raw material. in this paper, forming process of column ofa steering mechanism is investigated by finite element analyses and experimental tests; andoptimum die design parameters are found. forming process parameters including die opening angle,bearing length, clea...

BACKGROUND Recurrence is the most important complication of abdominal wall reconstruction. It is possible the repair itself is intact, but bulging or expansion of mesh causes recurrent swelling's of the abdominal wall. CASE SUMMARY In this report, we present bulging of a polyester mesh due to central pore expansion. DISCUSSION Repetitive stress and variations in intra-abdominal pressure can...

The authors administered a written survey consisting of colour images of 28 tympanic membranes (TM) to four groups of examiners: 86 medical students, 68 paediatric residents, 62 paediatricians and seven expert otoscopists. For each image, examiners were asked to indicate whether redness or bulging of the TM was present and to assign a diagnosis. The odds of diagnosing acute otitis media (AOM) w...

This paper examines the possible use of a bio-cementation process to reduce excessive bulging that occurs during loading granular columns in soft clays. A 12-phase percolation bio-chemical treatment technique was used bio-cement part targeting upper section, where usually occurs. Upon application unit cell surface loads up 350 kPa, placement bio-cemented column substantially reduced vertical st...

.hot metal gas forming of tubes can be used in various industries such as automotive and aerospace industries. in this process tube is formed at elevated temperatures, by using gas instead of fluid pressure. lower required pressure and low power are its advantages in comparison to hydroforming process. in this paper, a hot metal gas bulging process of an aluminum alloy tube has been investigate...

The aim of the present study was to compare the relationship of morphologically defined non-bulging/herniated, bulging and herniated intervertebral lumbar discs with quantitative apparent diffusion coefficient (ADC). Thirty-two healthy volunteers and 28 patients with back pain or sciatica were examined by MRI. All intervertebral lumbar discs from L1 to S1 were classified according to morphologi...

In ultrasonic tube hydroforming, the tube is hydro formed while the ultrasonic vibration is applied to the die. Prior studies provide experimental proof that ultrasonic tube hydroforming reduces corner radius, improves lubrication and uniform thickness. Use of ultrasonic vibration can decrease friction at the tube-die interface. Few attempts have been made to analyze the wire drawing while the ...