Chondrichthyan fishes are a diverse class of gnathostomes that provide a valuable perspective on fundamental characteristics shared by all jawed and limbed vertebrates. Studies of phylogeny, species diversity, population structure, conservation, and physiology are accelerated by genomic, transcriptomic and protein sequence data. These data are widely available for many sarcopterygii (coelacanth...

Abstract. This paper presents results of an experimental study on heat exchanger consisting of finned tube.The presented method for determining the local heat transfer coefficient on external tube surfaces is characterized by very high accuracy and can be applied to determine the spatial heat transfer distribution on objects with a complex shape. As a results of experimental and numerical inves...

This work presents a numerical investigation of a vertical internally finned tube subjected to forced convection heat transfer. The governing equations were solved numerically using the control volume technique. Nusselt number, Nu, and friction factor multiplied by Reynolds number, fRe, are influenced greatly by the height and number of the radial fins. The velocity and temperature distribution...

Complete genome sequence data led rapidly to the conclusion that ancient genome duplications had shaped the genomes of the model organisms Saccharomyces cerevisiae and Arabidopsis thaliana. Recent contributions have gone on to refine date estimates for these duplications and, in the case of Arabidopsis, to infer additional, more ancient, rounds of duplication by reconstructing gene order before...

The peripheral finned-tube (PFT) is a novel air-side geometry for compact heat exchangers. Previous studies (Pussoli et al., 2012) evaluated the thermal-hydraulic performance of the PFT geometry under dry conditions (i.e., no frost or condensate formation on the air side). The present study focuses on quantifying the thermal-hydraulic performance of the PFT geometry under frosting conditions. A...

Opsin gene sequences were first reported in the 1980s. The goal of that research was to test the hypothesis that human opsins were members of a single gene family and that variation in human color vision was mediated by mutations in these genes. While the new data supported both hypotheses, the greatest contribution of this work was, arguably, that it provided the data necessary for PCR-based s...

The power dissipation levels in high performance personal computers continue to increase rapidly while the silicon die temperature requirements remain unchanged or have been lowered. Advanced air cooling solutions for the major heat sources such as CPU and GPU modules use heat pipes and high flow rate fans to manage the heat load at the expense of significant increases in the sound power emitte...

A total of 34 fishes, belonging to the yellow-finned sea bream Acanthopagrus latus were collected, in April 2008 from Khor Abdullah northwest Arabian Gulf, by using trawler net. Fishes surveyed for parasites. The study revealed presence two species parasites first one is a monogenetic trematode, Polylabris mamaevi and second digenetic Paradiscogaster farooqii. detection P. farooqii present repr...

The local time-dependent surface heat transfer coefficients for plate finned-tube heat exchangers are estimated in a three-dimensional inverse heat conduction problem. The inverse algorithm utilizing the Steepest Descent Method (SDM) and a general purpose commercial code CFX4.4 is applied successfully in this study in accordance with the simulated measured temperature distributions on the fin s...

The optimization of the louver angle (θ) and the louver pitch (Lp) for a louver finned and tube heat exchanger was investigated numerically along with a simplified conjugate-gradient method (SCGM). The area reduction ratio relative to a plain surface is the objective function to be maximized. A search for the optimum louver angle (θ) and louver pitch (Lp), ranging from 15°< θ < 40° and 2 mm < L...