ISI POMPASI DESTEKLİ VAKUMLU KURUTUCU TASARIMI

Gıda ürünlerinin düşük sıcaklıklarda kurutulmasında ısı pompaları yaygın olarak kullanılmaktadır. Kurutma işleminde kurutma yapılan hacmin düşük basınçta olması buharlaşmaya olumlu etki sağlamaktadır. Bu çalışmada, ekonomizerli ve ekonomizersiz vakumlu ısı pompalı bir kurutucu tasarımı yapılmıştır. Kurutma havası ve ısı pompası sisteminin termodinamik davranışı sayısal olarak modellenmiştir. Sonuç olarak, ekonomizerli vakumlu ısı pompalı kurutma sistem elemanlarının kapasitelerinin ekonomizersiz sistem elemanlarının kapasitelerinden yaklaşık % 20 daha küçük olduğu tespit edilmiştir

AN APPLICATION FOR ELECTRICAL PRODUCTION WITH SOLAR TOWER SYSTEM

The requirement of electric energy rises with increasing of the population and faster improvement demands. Energy necessity generally is provided by using fossil based fuel sources. In order to supply energy requirements, today, using alternative sources became necessary because of the problems such as decreasing of available fossil fuel sources and environment pollution from this fuel. The solar energy which has a wide range of application potential is the most hopeful and unlimited energy source without environment pollution in electric energy production. In this paper, the electric production methods from solar energy are studied and the most suitable method for solar energy plant is tried to find out. The selected method, known as Solar Tower in literature is an electric production method. In this study, technical and cost analysis of an application using this method are carried out

Effects of intrinsic denervation on intestinal morphology in rats with short-bowel syndrome

When benzalkonium chloride solution (BACs) is locally applied, to the serosal surface of the intestine, it causes intrinsic denervation (ID) of the myenteric plexus (MP), changes intestinal morphology, and slows intestinal passage by prolonging small-bowel transit time. These effects of ID suggest that chemically-induced bowel denervation may be useful in the treatment of short-bowel syndrome (SBS). How ID affects intestinal morphology in rats with SBS has not previously been investigated. A 75%-80% mid-small-bowel resection was performed in 20 rats with mean body weight 247 ± 30 g. The proximal and distal 2 cm of the resected bowel were examined histologically. After intestinal continuity was maintained by end-to-end anastomosis, a 2-cm jejunal segment was marked with silk sutures to form the test segment. BACs 0.1% was applied to 10 of the 20 test segments according to the modified Fox method, resulting in MP destruction (G1). Saline solution was applied to the other 10 test segments to form the control group (G2). Three months later, the rats were killed and the jejunal, ileal, and test segments were evaluated morphologically. Results were expressed as mean ± standard deviation. The Wilcoxon parametric test was performed to compare the groups during the operation and after death, while the Mann-Whitney U-test was used to compare the data in G1 and G2. No intestinal obstruction was observed in either group. In G1, the body weight increased by 19.1% and the total small-intestinal lengthening was 62.2% (P < 0.05). In the test segment of G1, 75% of the ganglia in the MP were destroyed and villus height, crypt depth, intestinal muscle thickness, number of enterocytes, and villus density increased compared to G2. In the ileal segments of G1, there was an increase of 28.8% in intestinal diameter, 14% in muscle thickness, and 15% in villus density (P < 0.05). No change was observed in the untreated jejunal segments of G1 and G2. Thus, ID of the MP after segmental BACs application of the jejunal level: (1) does not cause intestinal obstruction after 3 months; (2) the increase in bowel diameter in the test and ileal segments increases the absorptive surface of the mucosa; (3) the morphologic changes in the test and ileal segments verify an increase in intestinal adaptation; and (4) BACs application in rats with SBS is an easy procedure with no morbidity or mortality, and can be used to increase intestinal adaptation in rats with SBS

A rare cause of intraabdominal tumor in childhood: Omental mesenteric myxoid hamartoma

Omental masses are rarely seen in childhood. Omental mesenteric myxoid hamartoma is a very rare and a new entity, first described by Gonzalez-Crussi et al. The tumor originates from the omentum and mesentery and presents as multiple nodules. It shares many morphologic features with inflammatory myofibroblastic tumor and therefore, may be considered as a variant of inflammatory myofibroblastic tumor. However, the clinical course and prognosis of this tumor is different. This rare and relatively new pathology in childhood, mimicking malign tumor and sharing many histopathological features with inflammatory myofibroblastic tumor, is presented to emphasize that it is a clinically different entity in terms of clinical picture and prognosis

Isparta İlinde Rüzgar Hızı Değerlerinin Belirlenmesi

The wind energy is the lead of the energy politics in last years. The wind energy has an important location in Turkey geography in terms of existing potential. Turkey is one of the countries, which have the best potential especially about wind and solar energy. But, Turkey can’t use that energy potential as much as other countries. In our country, which have high wind potential like that, must have make to take advantage of wind energy, especially in agriculture and industry. In this study, wind velocity in Isparta by using weather data with artificial intelligence method was estimate

Performance Estimation of Organic Rankine Cycle by Using Soft Computing Technics

In this study, the thermal efficiency values of Organic Rankine cycle system were estimated depending on the condenser temperature and the evaporator temperatures values by adaptive network fuzzy interference system (ANFIS) and artificial neural networks system (ANN). Organic Rankine cycle (ORC) fluids of R365-mfc and SES32 were chosen to evaluate as the system fluid. The performance values of ANN and ANFIS models are compared with actual values. The R2 values are determined between 0.97 and 0.99 for SES36 and R365-mfc, and this is satisfactory. Although it was observed that both ANN and ANFIS models obtained a good statistical prediction performance through coefficient of determination variance, the accuracies of ANN predictions were usually imperceptible better than those of ANFIS predictions