Fötal anasarka, vücutta aşırı sıvı birikimi ve subkutan ödem ile tanımlanan konjenital bir bozukluktur. Dokuz aylık birPekinez dişi köpek Ankara Üniversitesi, Veteriner Fakültesi, Doğum ve Jinekoloji Anabilim Dalı’na, güç doğumşikâyeti ile getirildi. Sezaryen operasyonuyla üç adet ölü doğmuş yavru çıkarıldı ve Ankara Üniversitesi VeterinerFakültesi Patoloji Anabilim Dalı’na nekropsi amacıyla gönderildi. Makroskobik olarak iki yavru normalden dahabüyüktü. Bu yavrularda visseral efüzyon ve subkutan ödeme rastlandığı için fötal anasarka tanısı konuldu. Üçüncüyavruda ise pulmoner hiperplazi ile karşılaşıldı. Tüm yavrularda ayrıca, palatoşizis, kuş dili ve lissensefalianomalilerine rastlandı. Histopatolojik yönden incelenmesi için organlardan örnekler alınarak rutin doku takibinekoyuldu. Anasarka’lı fötusların deri, karaciğer, kalp ve böbreklerinde şiddetli ödem ve dejeneratif değişikliklererastlandı. Tüm fötusların karaciğer ve dalaklarında farklı derecelerde ekstramedüller hematopoez gözlendi. Bu çalışmaTürkiye’de histopatolojik olarak köpeklerde tanımlanan ilk fötal anasarka olgusunu oluşturmaktadır. Ayrıca,brakisefalik köpeklerin resesif kalıtsal bir bozukluğu olan fötal anasarkaya yatkınlık gösterdiklerini vurgulamaktadır.

Fetal anasarca is a congenital condition defined by excessive fluid accumulation throughout the body and subcutaneous edema. A 9-month-old Pekingese bitch with dystocia was presented to the Obstetrics and Gynecology Department of Ankara University, Faculty of Veterinary Medicine. Three stillborn puppies were removed by caesarian section and sent to the Pathology Department of Ankara University, Faculty of Veterinary Medicine for necropsy. Grossly, two of the puppies were larger than normal, had diffuse subcutaneous swelling with visceral effusion and were diagnosed with fetal anasarca. As for the third one, pulmonary hypoplasia was reported. All the fetuses additionally showed palatoschisis, bird tongue and lissencephaly. For histopathological examination, samples from the organs were collected and routinely processed. Severe edematous and degenerative changes were noted in the skin, liver, heart and kidneys of the anasarcous fetuses. Extramedullary hematopoiesis was also observed to different degrees in the livers and the spleens of all fetuses. The current case represents the first histopathologically described case of canine fetal anasarca in Turkey and it highlights the predisposition of brachycephalic dogs to fetal anasarca which is referred to be heritable as a recessive trait.

In this study, impact of collector slope on the system is analysed with 3D CFD model developedbased on Manzanares prototype. In the numerical model, DO (discrete ordinates) radiation model for solarload and RNG k-ε turbulence model for turbulent air flow in the system are simultaneously utilised. Maximum air velocity within the system for incoming solar radiation of 1000 W/m2 is determined to be14.3 m/s, which agrees with experimental data of 15 m/s. In the Manzanares prototype, collector inlet heightis given as 1.85 m. Here, collector inlet height is kept constant and the collector outlet height is configured as 2.91, 3.97, 5.04, 6.12 and 7.17 m, so the change in system performance is evaluated in cases where thecollector slope is 0.5, 1, 1.5, 2 and 2.5°. Findings show that the increase in collector slope rises mass flowrate of air in the system and this improves power output of the system. Collector efficiency is 38.7% for thehorizontal collector which represents the reference case, whereas it is enhanced to 41.5% when collectorslope is 1°. Power output of the system at reference case is 54.5 kW, while it is 57.1 kW when collectorslope is 2.5°.