We tested the aerodynamic function of nasal conchae in birds using CT data from an adult male wild turkey (Meleagris gallopavo) to construct 3D models of its nasal passage. A series of digital "turbinectomies" were performed on these models and computational fluid dynamic analyses were performed to simulate resting inspiration. Models with turbinates removed were compared to the original, unmod...

Innate hearing processes define the realism that can be obtained from reproduced sound. An unspecified system with two loudspeakers in a room places considerable limitations upon the degree of auditory realism that can be obtained. It has been observed that loudspeakers and room must be hidden from the auditory scene that is evoked in the listener’s brain. Requirements upon the polar response a...

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This paper explores comparative cost structures and the effects of scale in situations where a firm splits operations between separate production facilities in order to influence wage rates: one example of a ‘divide and rule’ strategy. We argue that the extent of this phenomenon may be partially masked by the manner in which its expression is mediated by technology and the vertical organisation...

An experimental study on the flow pattern dynamics in a standard mixing vessel with radial baffles filled water and induced by pitched blade impeller pumping downward is presented. Investigation mainly focused detection analysis of quasi-periodical or periodical low-frequency phenomenon connected time- length-scales considerably exceeding Blade Passage Frequency (hereinafter BPF) common turbule...

In this paper the thermal behavior of the shell-side flow of a shell-and-tufe heat exchanger has been studied using theoretical and experimental methods. The experimental method Provided the effect of the major parameters of the shell-side flow on thermal energy exchange. In the numerical method, besides the effect of the major paramerers, the effect of different geometric parameters and Re on ...

INTRODUCTION SDS-polyacrylamide gel electrophoresis (SDS-PAGE) represents the second-dimension separation of two-dimensional (2D)-PAGE. Large-scale proteome analysis usually requires simultaneous electrophoresis of batches of second-dimension SDS-PAGE gels to maximize the reproducibility of 2D electrophoresis protein profiles. This requirement is most easily met using multiple, vertical second-...

In this paper, a series of numerical experiments are carried out on the anti-scour device combined with perforated baffle and ring-wing plate. addition, optimal dimensions location obtained: The ratio is S = 20%, distance from center bridge pier L 2d (d diameter pier), plate located at H 1/3h (h water depth). To verify effect device, scour characteristics flow field further investigated. Compar...

Liquid sloshing is a common phenomenon in ocean engineering, and one which not only affects the stability of ship navigation, but also poses threat to both marine environment human life. Ascertaining how best reduce amplitude liquid has always been key problem engineering. In this study, based on an improved moving-particle semi-implicit method, BM-MPS damping effect vertical slotted screen und...

The integrating sphere is used in photometry to h.measure total luminous flux. In a sphere with a diffusely reflecting coating, the illuminance by reflected > light is approximately the same at all points on the sphere surface and is proportional to the total flux emitted by the lamp. This reflected light is measured at a point on the sphere surface which is shielded from the direct rays of the...