نتایج جستجو برای: perforated fin
تعداد نتایج: 22631 فیلتر نتایج به سال:
The experimental and numerical studies of thermo-hydraulic characteristics perforated wavy fin heat exchanger unperforated were conducted. Firstly, the two kinds fins studied under different air in?let velocity constant inlet temperature. results show that Nusselt number increases with Reynolds friction factor decreases number. Then, performance is numerically analyzed, simulation are in good a...
The current work explores a trial forced convective heat move from rectangular blades on an upward surface at low Reynolds numbers. removal for proper number of punctured and non-punctured fins, fin dividing, length was estimated in air stream fluctuating inlet speed some way or another info power somewhere the range 20W 70W. characteristics are investigated rectangular, circular, V-shape perfo...
An experimental study has been conducted to evaluate the performance of a compact round-tube louver-fin condenser, each with frontal areas of 0.25 m in both dry and wet conditions. Deluge water cooling is achieved by incorporating a perforated bottom plate-type water distributor on top of the round tube heat exchanger. Water is used as a refrigerant, and enters the heat exchanger tubes at 35°C ...
Background Recent studies indicate increased serum amylase in children with acute appendicitis. The objective of the current study was to determine the diagnostic accuracy of raised serum amylase level in prediction of perforated appendicitis in children with acute appendicitis. Materials and Methods In this cross-sectional study, 61 children (aged 3 to 15 years) who underwent appendectomy su...
Teleosts have an asymmetrical caudal fin skeleton formed by the upward bending of the caudal-most portion of the body axis, the ural region. This homocercal type of caudal fin ensures powerful and complex locomotion and is regarded as one of the most important innovations for teleosts during adaptive radiation in an aquatic environment. However, the mechanisms that create asymmetric caudal fin ...
a series of two experiments was conducted to study the optimum dietary protein level and protein to energy ratio of lemon fin barb hybrid larvae. in experiment 1, five isocaloric diets (4700 kcal per kg) ranging from 40 to 60% protein in 5% increments were fed to triplicate groups of lemon fin barb hybrid larvae (initial weight: 0.10 ± 0.01 mg per fish) for 21 days. weight gain of fish was prop...
background: delay in diagnosis and treatment of perforated appendicitis may cause life-threatening complications. the aim of this study was to determine and compare pre-operative total and direct bilirubin levels in cases of simple and perforated acute appendicitis in order to improve the clinical decision making. methods: this prospective observational study included eighty patients who unde...
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