The joining of dissimilar 6mm thickness plates AA6082 & AA5083 was carried out using the friction stir welding (FSW) technique. process parameters are optimized Taguchi L9 orthogonal design experiments. Where rotational speed (600, 900, 1200 rpm), travel (60, 90, 120 mm/min), and tilt angle (0, 1, 2◦ ) were taken into consideration. optimum determined with reference to tensile strength, yield s...

In this paper, forecasting models were constructed to estimate surface solar radiation on an hourly basis and the solar irradiance received by solar panels at different tilt angles, to enhance the capability of photovoltaic systems by estimating the amount of electricity they generate, thereby improving the reliability of the power they supply. The study site was Tainan in southern Taiwan, whic...

Antenna tilt angles having a relation to element spacings are among the important radar design parameters. The optimum tilt angles are derived theoretically: four types of uniform and nonuniform linear arrays are considered and Chebyshev array factors are used as a nonuniformly excited array case.

STUDY DESIGN Retrospective review of prospective data. OBJECTIVE To determine if surgically leveling the upper thoracic spine in patients with adolescent idiopathic scoliosis results in level shoulders postoperatively. SUMMARY OF BACKGROUND DATA Research has shown that preoperatively tilted proximal ribs and T1 tilt are more correlated with trapezial prominence than with clavicle angle. M...

This study investigated the effect of projection angle on the distance attained in a rugby place kick. A male rugby player performed 49 maximum-effort kicks using projection angles of between 20 and 50°. The kicks were recorded by a video camera at 50 Hz and a 2 D biomechanical analysis was conducted to obtain measures of the projection velocity and projection angle of the ball. The player's op...

abstract the use of geophysical methods, before digging, can be effective in the archaeological explorations. in the meantime, the gravimetery is the one of the most widely methods that be use, due to lack of harmful environmental effects. the gravity method is based on density contrast between the anomalous body and the country rocks or around of them. for archeology studying, the target is de...

Purely electric sweepers are widely used in the urban sanitation industry due to their emission-free nature and ease of miniaturisation. The dust suction port is key system sweeper, improving design level sweeper can effectively improve operational performance sweeper. Using company’s self-developed Ruiqing S26 pure as research object, a CFD (Computational Fluid Dynamics) method was analyse inf...

Large scale changes to lipid bilayer shapes are well represented by the Helfrich model. However, there are membrane processes that take place at smaller length scales that this model cannot address. In this work, we present a one-dimensional continuum model that captures the mechanics of the lipid bilayer membrane at the length scale of the lipids themselves. The model is developed using the Co...

MATERIAL AND METHODS We prospectively investigated 41 consecutive patients (mean age, 64 years; range, 22-81 years) who underwent corrective surgery for ASD from March 2011 to September 2012. The mean postoperative follow-up period was 26 (range, 15 33) months. Gait was analyzed before and 1 year after surgery, and the 4m walking status was recorded with a video camera. We measured the angle be...