The critical heat flux occurring during upflow of boiling water in vertical smooth and porous-coated tubes were investigated experimentally. experiments performed at low pressures from 0.11-0.7 MPa mass fluxes 100-400 kg/m2s, with inlet subcoolings 1-70 K. carried out four test sections, two which porous coated by sintering. each the cases, smooth, had same geometries (L/D = 28.3, L/D 38.75) to...

abstract appearance of tomato used for preparing dried halves tomato and retention its colour during storage are very important factors. in order to study the physicochemical properties (brix, acidity, ph, moisture, average length, average diameter and the ratio of length over diameter), five different varieties of tomato (kural, riyogrande, pilow and pep) were selected. the experiment was desi...

The results of an ongoing FEM parametric study are presented regarding the dependence of the resulting piled raft behavior under lateral load and combination of loads on pile diameter, pile length, arrangement of piles and raft thickness. Taguchi method with Analysis of Variance (ANOVA) was employed to calculate the contribution ratio of these factors on the lateral displacement of piled raft. ...

Fecundity is one of the important indicators of reproduction biology in fishes especially in rearing and restocking management of endangered species such as sturgeon. The fecundity of stellate Sturgeon (Acipenser stellatus Pallas, 1771) was studied in 50 specimens captured by gill net (mesh size= 100 mm) and seine net in different fishing areas along the southeastern part of the Caspian Sea fr...

Objective- To measure statistically bone cortex to diameter  (C/D) ratio in metocarpo/metatarsal and proximal phalanges in camel. This ratio may be used in diagnosing possible metabolic and nutritional diseases in camel. Design- Experimental study. Animals- Twelve camel limbs (6 fore limbs & 6 hind limbs)      Procedures- This study was conducted on dorsopalmar/dorsoplantar radiographs of t...

In this study the effects of plant growth regulators including; GA3 (0 and 50 mg/l) and ethephon (0 and 500 mg/l) were studied on the quality properties of two grape cultivars (Perlette and Yaghuti). At the harvest time, some physicochemical characteristics such as fruit cluster weight, fruit diameter, length, volume and L/D ratio, flesh firmness, fresh weight, TA, pH, TSS and fruit color were ...