Karşılaştırmalı Performans Göstergeleri Kullanılarak Hayrabolu Sulama Şebekesinin Değerlendirilmesi

Performance of Hayrabolu Irrigation Scheme of the Thrace district in Turkey was evaluated using some selected comparative indicators, classified into five groups, namely, agricultural, economic, water-use, physical and environmental performance by International Water Management Institute (IWMI). Agricultural performance, evaluated in different type of Gross Value of Production, was determined lower than that of the other respective national average. Analyses of water-use performance showed that relative water and relative irrigation supply were calculated 1.91 and 1.55 respectively, indicating that water distribution is not tightly related to crop water demand. Economic performance indicators showed that the scheme had a serious problem about the collection of water fees. Physical performance, evaluated in terms of irrigation ratio and sustainability of irrigated land, were poor. Under environmental performance studies, no damages such as waterlogging and salinity were detected in the irrigated area through excessive water use.Uluslararası Su Yönetimi Enstitüsü (IWMI) tarafından geliştirilen bazı karşılaştırmalı göstergeler yardımı ile Hayrabolu Sulama Şebekesine ait tarımsal, ekonomik, su kullanımı, fiziksel ve çevresel performans değerlendirmesi yapılmıştır. Farklı tipte toplam üretim değerlerine bağlı olarak belirlenen Tarımsal performans değeri ülke ortalamasının altında saptanmıştır. Su kullanım performansı göstergelerinden nispi su sağlama ve nispi sulama suyu sağlama değerleri sırasıyla, 1.91 ve 1.55 olarak hesaplanmıştır ki bu su dağıtımı ile bitki su ihtiyacı arasında sıkı bir ilişki olmadığını göstermiştir. Ekonomik performans göstergeleri, şebekenin su toplama konusunda ciddi bir probleme sahip olduğunu göstermiştir. Sulama oranı ve sürdürülebilir sulama alanı olarak değerlendirilen fiziksel performans değeri, zayıf olarak belirlenmiştir. Çevre performans çalışmaları altında tuzluluk ve göllenme gibi zararların oluşmadığı saptanmıştır

A Turbulence Model for the Heat Transfer Near Stagnation Point of a Circular Cylinder

A one-equation low-Reynolds number turbulence model has been applied successfully to the flow and heat transfer over a circular cylinder in turbulent cross flow. The turbulence length-scale was found to be equal 3.7y up to a distance 0.05δ and then constant equal to 0.185δ up to the edge of the boundary layer (wherey is the distance from the surface and δ is the boundary layer thickness). The model predictions for heat transfer coefficient, skin friction factor, velocity and kinetic energy profiles were in good agreement with the data. The model was applied for Re ≤250,000 and Tu∞≤0.07

Akut Tonsillit ve Peritonsiller Apseli Hastalarda Yeni Bir Prognostik Faktör; C-Reaktif Protein / Albumin Oranı

Amaç: Peritonsiller apse, tonsil dokusunun ciddi bir enfeksiyon hastalığıdır. Tedavisinde genellikle semptomları hafifletmek için hem tıbbi hem de cerrahi yaklaşımlar gerekir. Son zamanlarda, klinik takibe ek olarak C-reaktif protein (CRP) ve albumin gibi bazı parametrelerin, ek enflamatuar izleme belirteçleri olduğu düşünülmektedir. Bu çalışmanın amacı akut tonsillitli hastaların peritonsiller apseye dönüşümünü tahmin etmek için CRP / albumin oranının kullanılıp kullanılamayacağını araştırmaktır. Hastalar ve Yöntem: Bu çalışma Ocak 2003 ile Haziran 2020 tarihleri arasında Konya Şehir Hastanesi Kulak Burun Boğaz Kliniği’nde yatış yapılarak takip edilen 138 akut tonsillitli ve 106 peritonsiller apseli hastanın retrospektif olarak CRP/albumin oranları değerlendirilerek gerçekleştirildi. Aynı zamanda lökosit, nötrofil ve lenfosit sayıları ile CRP, albümin ve nötrofil / lenfosit (NLO) oranı değerleri de retrospektif olarak analiz edildi ve hasta grupları arasında karşılaştırıldı. Bulgular: CRP / albumin oranı düzeyleri peritonsiller apse grubunda, akut tonsillit grubuna göre anlamlı olarak daha yüksekti (p<0.05). Peritonsiller apse ile akut tonsillit grubu arasında NLO düzeylerinde anlamlı bir fark yoktu (p>0.05). Peritonsiller apse grubunda albümin oranı anlamlı olarak düşük bulunurken (p<0.05). lenfosit sayısı anlamlı oranda yüksek bulundu. (p<0.05). Beyaz küre sayısı, nötrofil sayısı, C-reaktif protein değerlerinde gruplar arasında anlamlı olarak fark yoktu (p>0.05). Sonuç: CRP / albümin oranının, akut tonsillitli hastalarda peritonsiler apse dönüşümünü tahmin etmek için kullanılabilecek ölçülmesi kolay, tekrarlanabilir, invaziv olmayan ve inflamasyona dayalı prognostik bir skor olabileceği düşünülmektedir

Spectral domain optical coherence tomography findings of the patients with central serous chorioretinopathy

Objectives: In this study, optical coherence tomography (OCT) findings of the patients with a diagnosis of acute or chronic central serous chorioretinopathy (CSCR) were investigated. Methods: Patients with symptoms and signs longer than 3 months were considered as chronic CSCR. OCT findings of acute and chronic CSCR were recorded at admission. Between the groups, following parameters were compared; visual acuity, hyper reflective dots (HRD), subretinal fluid height (SFH) presence of pigment epithelial detachment (PED), status of photoreceptor inner-outer segment (IS/OS) line. Results: When acute and chronic patients evaluated separately, in acute patients accompanied by PED had lower visual acuity and higher SRF height. In patients with chronic CSCR subretinal fluid of patients with PED was greater than the others however there were no statistically significant differences in visual acuity. Presence of HRD had no effect on the average visual acuity SRF height in patients with acute and chronic CSCR. Also IS/OS line integrity had no effect in visual acuity of the patients in our study. Conclusion: Between the groups there was no difference in terms of IS/OS line distortion, presence of HRD, PED. Height of SRF in patients with PED was higher in both groups. In addition, in acute patients with PED visual acuity was also found to be lower. J Clin Exp Invest 2014; 5 (2): 290-29

Mixed Bacteriological Isolation Percentages from the Uterus of Cows Slaughtered due to Infertility

Background: Intrauterine mixed infections are an important problem in cattle breeding. In this study, we aimed to determine the mixed bacteriological isolation rates from the uterus of cows with clinical metritis and to reveal the relationships between the bacteria that isolated together.Methods: For this purpose, sterile swabs were taken from 490 uterus obtained from cattle slaughtered due to infertility in three slaughterhouses and used them to perform microbiological tests. After evaluating the data, it was determined that the bacterial isolation rate from uterus with clinical metritis was 76.14% (n = 268).Results: The rates for 1, 2, 3, 4, and 5 bacteria isolated from the uterus with clinical metritis were 48.13%, 33.96%, 15.30%, 2.24%, and 0.37%, respectively. The isolation rates for Trueperella pyogenes, Fusobacterium necrophorum, and Escherichia coli alone from the uterus with clinical metritis were 27.08%, 28.00%, and 16.51%, respectively. In uterus with clinical metritis, Staphylococcus aureus (16.67%) was the most commonly isolated bacteria with T. pyogenes, Clostridium spp. (16%) co-isolated with F. necrophorum, and coagulase-negative staphylococci (16.51%) and Bacillus spp. (16.51%) were detected with E. coli.Conclusion: As a result, it was concluded that when evaluating the microbiological results for cows with clinical metritis, mixed infections should be taken into more consideration, and the characteristics of the bacteria that isolate together should be considered during the treatment of mixed infections.Keywords: Cattle; Uterine; Isolation; infertility     

Mean platelet volume in patients with retinal artery occlusion

ABSTRACT Purpose: The aim of this study was to investigate the mean platelet volume (MPV) of patients with retinal artery occlusion (RAO). Methods: Thirty-seven patients diagnosed with RAO and 32 control subjects were included in this retrospective study. Retinal artery occlusion was diagnosed on the basis of clinical examination and fundus fluorescein angiography. All participants underwent complete ocular examination, and MPV, hematocrit, hemoglobin, and platelet counts were recorded. RAO patient data were compared with those of the control subjects. Results: Patients with RAO had significantly higher MPV values (7.96 ± 1.2 fL) compared with control subjects (7.33 ± 0.7 fL, p<0.001). No significant difference was found with regard to platelet count between the RAO group and the control group (262 ± 70.1 × 109/L and 251 ± 56.6 × 109/L, respectively, p=0.50). MPV was an independent predictor of RAO [odds ratio (OR)=0.50; 95% confidence interval (CI)=0.28-0.89; p=0.019). Conclusions: Our results demonstrated that MPV values were significantly higher in patients with RAO, suggesting that larger platelets may contribute to the pathogenesis of the RAOs

Comparison of Optical versus Ultrasonic Biometry in Keratoconic Eyes

Purpose. To compare the measurements of optical versus ultrasonic biometry devices in keratoconic eyes. Materials and Methods. Forty-two eyes of 42 keratoconus (KC) patients enrolled in the study were examined. Clinical and demographic characteristics of the patients were noted, and detailed ophthalmological examination was performed. Following Pentacam measurements, central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT), and axial length (AL) were obtained using the Lenstar and US biometer to determine the reproducibility of the measurements between the two devices in keratoconic eyes. The Bland-Altman method was used to describe the agreement between the two devices. Results. The Lenstar could not measure at least one of the biometric properties in one eye and did not automatically give the corrected ACD in 2/3 of our study population. The Lenstar measured CCT (average difference 5.4 ± 19.6 µm; ICC = 0.90; ), LT (average difference 0.13 ± 0.17 mm; ICC = 0.67; ), and AL (average difference 0.10 ± 0.76 mm; ICC = 0.75; ) thinner than US biometer, whereas it measured ACD (average difference 0.18 ± 0.17 mm; ICC = 0.85; ) deeper than US biometer in keratoconic eyes. Conclusion. Although the difference between the measurements obtained using the two devices might be clinically acceptable, US biometry and Lenstar should not be used interchangeably for biometric measurements in KC patients

Mean Platelet Volume in Patients with Nonarteritic Anterior Ischemic Optic Neuropathy

Objective. We aimed to investigate the mean platelet volume (MPV) of the patients with nonarteritic anterior ischemic optic neuropathy (NAION). Methods. The medical records of 46 patients with the diagnosis of NAION and 90 control subjects were retrospectively evaluated. All participants underwent complete ocular examination including intraocular pressure (IOP) measurement. Hematocrit, MPV, hemoglobin, and platelet levels of the patients with NAION were compared with those of control subjects. Results. There was no significant difference between the groups in platelet counts (p=0.76). NAION group had significantly higher MPV values (8.25±1.26 fL) than that of control subjects (7.64±1.01 fL) (p<0.001). Multivariate logistic regression analysis showed that MPV is an independent predictor of NAION (odds ratio = 1.61; 95% confidence interval (CI) = 1.13–2.28; p=0.007). The mean IOP was significantly higher in NAION group (p<0.001). IOP was also found as an independent predictor of NAION according to the regression analysis (OR = 1.27; 95% CI = 1.08–1.48; p=0.003). Conclusion. Our results demonstrated that the MPV values were significantly higher in NAION patients, suggesting that larger platelets may contribute to the pathogenesis of the NAION

Comparison of anterior segment parameters with pentacam according to age in emmetropic eyes

Objective: It was aimed to compare anterior segment parametersobtained by rotating Scheimpflug camera systemaccording to age groups.Methods: 290 eyes of 145 emmetropic subjects wereincluded in the study. Subjects were divided in threeage groups. Group 1 comprised the subjects age up to20 years, Group 2 comprised the subjects age between21 and 40 and Group 3 comprised the subjects between41 years and older. In all subjects, flat keratometry (K1),steep keratometry (K2), mean corneal power (Km),maximum keratometry (Kmax), central corneal thickness(CCT), apex corneal thickness (ACT), thinnest cornealthickness (TCT), anterior chamber volume (ACV) and anteriorchamber depth (ACD) were obtained by using rotatingScheimpflug camera system. To eliminate operatordependent variables, automatic release mode was used.All measurements were obtained by the same examiner.Results: The study included 72 female and 73 male subjects.The mean age of the subjects was 31.37±12.29years (range, 8-65). There were no significant differencesin keratometric values between age groups. Therewas significant difference between Groups 1 and 3 andGroups 2 and 3 in the mean CCT, ACT and TCT (p<0.05).There was significant difference between the groups inthe mean ACD and ACV. There significant positive correlationbetween age and CCT (r=0.181, p=0.001), ACT(r=0.161, p=0.006) and TCT (r=0.16, p=0.006). Therewere significant negative correlations between age andACD (r=-0.376, p<0.001) and ACV (r=-0.367, p<0.001).Conclusion: In the emmetropic eyes, significant reductionwas found in ACD and ACV, while there was significantincrease in CCT, ACT and TCT by age.Key words: Corneal topography, anterior segment, emetropic eyes, pentaca