Power series expansions in ka are derived for the pressure at the edge of a radiator, the reaction force on the radiator, and the total radiated power arising from a harmonically excited, resilient, flat, circular radiator of radius a in an infinite baffle. The velocity profiles on the radiator are either Stenzel functions (1-(sigma/a)2)n, with sigma the radial coordinate on the radiator, or li...

the optimum road spacing has been studied by many researches. it is an important step of forest road network planning. the goals of this study are determining the optimum road spacing in kheiroudkenar forest of nowshahr in northern iran and study of effect of kind of skidder on skidding cost and road spacing. continues time study method was used to determine the production rate of taf and timbe...

Laminar natural convection from an array of horizontal isothermal cylinders confined between two vertical walls, at low Rayleigh numbers, is investigated by theoretical and numerical methods. The height of the walls is kept constant, however, number of the cylinders and their spacing, the distance between the walls and Rayleigh number have been varied. The optimal spacing (confining walls) and ...

The optimum road spacing has been studied by many researches. It is an important step of forest road network planning. The goals of this study are determining the optimum road spacing in Kheiroudkenar forest of Nowshahr in Northern Iran and study of effect of kind of skidder on skidding cost and road spacing. Continues time study method was used to determine the production rate of TAF and Timbe...

Integrating spheres are often used as calibration sources providing uniform radiance within a solid angle and/or uniform irradiance at a distance. The best performance in such a system can be achieved if one is able to evaluate as well as predict the important characteristics of the sphere system’s output, such as the spatial and angular distributions of radiance over the exit port, or the dist...

An unusual case of anomalous drainage of the right lung is described. The right superior pulmonary vein drained into the superior vena cava, and the middle and lower pulmonary veins drained into the inferior vena cava. Repair was achieved by creating a pericardial baffle that drained the inferior vein and the orifice of the superior vena cava through a surgically created atrial septal defect. T...

A 7-year-old boy developed increasing cyanosis after a total cavopulmonary connection with a 3 mm fenestration in the baffle. Catheterisation performed 4 years and 7 months after the operation showed reopening of a left superior caval vein draining into the pulmonary venous atrium. Due to the large size of the left superior caval vein, and the absence of intrinsic stenosis, we chose to use an A...

A broad-wall transverse slot array is important in that it radiates linear polarization orthogonal to that of shunt slot array. A bore-sight beam transverse slot array requires the slot spacing of a guided wavelength λg, which is always greater than the free space wavelength λo, hence the array suffers from unwanted grating beam radiations. From the design point of view, it utilizes non-resonan...

a field experiment was conducted to assess the optimum inter- and intra-row spacing on growth, yield and yield component of roselle (hibiscus sabdariffa l.) in 2014/15 cropping season at wondo genet agricultural research center experimental site (at wondo genet station). two inter-row spacing (60 and 90 cm) and three intra-row spacing (30, 60 and 90 cm) were evaluated using two varieties, wg-hi...

this study was aimed to the examination of the effect of tillage row spacing and bush spacing on the performance and components of phaseou vulgaris var. (line: cos16). the investigation was conducted as cut terraces and in terms of complete random blocks in three replicates at brujerd agricultural research and natural resources in the agricultural year 2009-2010. here, the main terraces with th...