Publications by authors named "Metin Aktas"

This study was built on the basis of experimental results from a simple refrigeration system using R134a as a refrigerant. Based on the real dimensions of the system and the experimental results, Ansys fluent software was used to simulate the system to prepare the system to introduce the nanoparticles theoretically. Since the nanoparticle preparation process is expensive, this research presents a simple, easy, and inexpensive method for the preparation process based on, distilled water, ammonia, copper nitrate, and cerium nitrate to synthesize seven types of nanoparticles as a single oxide and as a mixture from two different oxides The results of preparing using X-ray diffraction and scanning electron microscopy confirmed that the particles were spherical in shape, with suitable average diameters ranging between 78.

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Spatial correlation between densely deployed sensor nodes in a wireless sensor network (WSN) can be exploited to reduce the power consumption through a proper source coding mechanism such as distributed source coding (DSC). In this paper, we propose the Decoding Delay-based Distributed Source Coding (D-DSC) to improve the energy efficiency of the classical DSC by employing the decoding delay concept which enables the use of the maximum correlated portion of sensor samples during the event estimation. In D-DSC, network is partitioned into clusters, where the clusterheads communicate their uncompressed samples carrying the side information, and the cluster members send their compressed samples.

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This study was carried out on 45 stool specimens, consisting of 18 samples from children with diarrhea and 27 samples from diarrheic calves. Samples were screened by both carbol fuchsin staining and nested PCR for presence of Cryptosporidium spp. Using the carbol fuchsin staining method, we detected a total of 4 (8.

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The present study was conducted on small mammals from different locations in Turkey. One hundred twenty- three individuals representing 11 species of rodents and insectivora were investigated for mite ectoparasites. A total of 126 gamasine mites were collected from 96 individuals (78.

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Today, cystic echinococosis (CE) is one of the most prevalent and spreading public health problem all over the world. It has been known that CE cause substantial economic losses at all over the world such as in Turkey. In this study, 85 patients who presented with a suspicion of CE to the serology laboratory of the Clinic Microbiology Department of the SSK Ankara Education Hospital between February 1996 and July 1997 were evaluated.

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