To better understand the mechanism influencing periodic lattice structures in gas turbine blade cooling, these numerical simulations present a systematic comparison of effects cases involving pin-fin, Kagome, and BCC arrays on film-cooling effectiveness under three blowing ratios (i.e., M = 0.5, 1.0, 1.5). The results indicate that introduction array improves within whole streamwise range, espe...

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 ...

Overheating is a failure mode that significantly affects the reliability of electronic devices. All devices, including 3-phase inverter driving traction motor, produce heat dissipation. Heat dissipation needs to be controlled with cooling prevent overheating. can avoided by increasing or reducing in caused internal resistance metal–oxide–semiconductor field-effect transistor (MOSFET), switching...

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...

Hygienic behavior (HB) is one of the natural mechanisms of honey bee for limiting the spread of brood diseases and Varroa destructor parasitic mite. Objective of our study was to measure HB of Apis mellifera unicolor colonies (N = 403) from three geographic regions (one infested and two free of V. destructor) in Madagascar. The pin-killing method was used for evaluation of the HB. Responses wer...

A fully 3D conjugate numerical analysis was performed to reveal the effects of air, R134a refrigerant and water on electromagnetic fields of electronic cooling designs made of arrays of micro pin-fins with integrated ThroughSilicon-Vias (TSVs). The integrated TSV cooling configuration included 8 cylindrical TSVs with 150 μm diameter each and 200 μm height. The external dimensions of the silicon...

An 18-month-old male infant presented with intermittent non-bilious vomiting with pain abdomen for last six months. There was history of localized abdominal distension which gets relieved partially, with vomiting. Patient was born at full term and had no previous medical or surgical history. On examination, patient’s weight was 8.8 kg. Biochemical profile was normal. X-ray abdomen revealed gast...

The present paper describes how to apply the Chebyshev orthogonal collocation technique to solve steady-state and unsteady-steady two-dimensional problems. All problems are solved using one single computer algebra, Mathematica . The problems include: (1) steady-state heat transfer in a rectangular bar, (2) steady-state flow in a rectangular duct, (2) steady-state heat transfer in a cooling cyli...

Most research on hygienic behavior has recorded the time taken by the colony to remove an experimental amount of dead brood, usually after one or two days. We evaluated the time that hygienic (H) and non-hygienic (NH) honey bees take to uncap and remove dead brood in observation hives after the brood was killed using the pin-killing assay. Four experimental colonies were selected as the extreme...

viii transfer coefficient in the channels, which is effective in flattening thermal gradients from non-uniform heating within the chip stack. Flow boiling of refrigerants 236fa and 1234ze (R236fa & R1234ze) were experimentally investigated within two different test sections. First-of-a-kind high pressure fluidic tests were successfully achieved within a 3D chip stack with interlayer cooling cap...