European Passengers Satisfaction And Fairness Perceptions About Turkish Airports

The purpose of this study is to find the relationship between personal and flight characteristics of European passengers satisfaction and fairness perceptions about Turkish airports. The hypotheses were tested on a sample of 559 European passengers in Turkish Airports. Respondents voluntarily participated to the survey. Self reported questionnaire forms were filled in by the passengers waiting in the international area of the airports in a face to face interview manner. To analyze the collected data, independent sample of t-test and one-way analysis of variance (ANOVA) were used. Study results indicated that the less flying passengers are more satisfied about Turkish airports than the more flying passengers. Also, passengers travelling for tourism purpose have the highest fairness perception about the services delivered in Turkish airports. But, the services of Turkish airports are perceived relatively less fair by the passengers travelling for health purposes. The most fairly perceiving passengers are of middle income level

Ultrazvučna procjena debljine bedrene hrskavice u bolesnica sa sindromom policističnih jajnika

The aim of the study was to investigate knee cartilage thickness in polycystic ovary syndrome (PCOS) patients using ultrasonography and to assess the effects of sex steroids on osteoarthritis development. A total of 90 female patients were enrolled in the study, including 47 patients diagnosed with PCOS as study group and 43 patients admitted to our hospital for any other complaints as control group. Ultrasonographic evaluation of both knees was performed in all patients. The knee cartilage thickness was measured at lateral condyle, intercondylar area and medial condyle. The measurements were averaged for each region. The mean femoral cartilage thickness was greater in the study group compared with control group in all regions, with a statistically significant difference (p<0.005). In conclusion, we found PCOS patients to have greater mean cartilage thickness, supporting the possible effects of sex steroids on osteoarthritis development.Cilj istraživanja bio je ultrazvučno procijeniti debljinu hrskavice koljena u bolesnica sa sindromom policističnih jajnika (SPCJ) i učinak spolnih hormona na razvoj osteoartritisa. U istraživanje je bilo uključeno ukupno 90 žena, tj. 47 bolesnica s dijagnozom SPCJ kao ispitna skupina i 43 bolesnice primljene na odjel zbog drugih tegoba kao kontrolna skupina. Ultrazvučna procjena obaju koljena učinjena je u svih bolesnica. Debljina hrskavice koljena mjerena je u lateralnom kondilu, interkondilarnom području i medijalnom kondilu te je izračunat prosjek mjerenja za svaku regiju. Srednja debljina koljenske hrskavice bila je veća u ispitnoj skupini u usporedbi s kontrolnom skupinom u svim regijama, a razlika je bila statistički značajna (p<0,005). Dakle, utvrđeno je da bolesnice sa SPCJ imaju veću srednju debljinu koljenske hrskavice, što govori u prilog mogućeg utjecaja spolnih hormona na razvoj osteoartritisa

Fonksiyonel Derecelendirilmiş Dönen Silindirlerde Elastik Gerilme Analizi

Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2013Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2013Bu çalışmada, fonksiyonel derecelendirilmiş malzemeden yapılmış dönen uzun silindirlerde elastik gerilme dağılımı analitik olarak belirlenmiştir. Düzlem şekil değiştirme varsayımı altında Von Mises akma kriteri kullanılarak, elastik limitler analitik olarak belirlenmiştir. Sonuç olarak, derecelendirme parametresinin hem gerilme dağılımı hem de elastik limitler üzerinde önemli bir rol oynadığı ortaya konulmuştur. Anahtar Kelimeler: Fonksiyonel derecelendirilmiş silindirler, Elastik gerilme, Elastik limitIn this study, elastic stress distribution on rotating long cylinders made of functionally graded material was analytically determined. Elastic limits were defined under plane strain assumption using Von Mises yielding criterion. As a result, it was presented that gradation parameter plays a role on both stress distribution and elastic limits. Keywords: Functionally graded cylinders, Elastic stress, Elastic limi

Fonksiyonel Derecelendirilmiş Silindirlerde Termal Elastik Gerilme Analizi

Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2013Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2013Bu çalışmada, termal yük altında fonksiyonel derecelendirilmiş malzemeden yapılmış uzun silindirlerde oluşan termal elastik gerilme dağılımı analitik olarak tayin edilmiştir. Silindir malzemesinin elastisite modülünün, termal genleşme katsayısının ve akma limitinin üssel bir fonksiyona göre radyal doğrultuda değişebildiği, poisson oranının ise sabit olduğu varsayılmıştır. Küçük deformasyonlar ve düzlem şekil değiştirme varsayımı altında Von Mises akma kriteri kullanılarak, elastik limitler analitik olarak belirlenmiştir. Sonuç olarak, derecelendirme parametresinin gerilme dağılımı üzerindeki etkileri ortaya konulmuştur. Anahtar Kelimeler: Fonksiyonel derecelendirilmiş silindirler, Termal elastik gerilme, Elastik limitIn this study, thermal elastic stress distribution occurred on long cylinders made of functionally graded material was analytically defined under thermal load. It was assumed that elasticity modulus, thermal expansion coefficient and yielding limit of cylinder material could change in terms of an exponential function as for that Poisson’s ratio was constant. Elastic limits were determined under small deformations and plane strain assumptions using Von Mises yielding criterion. As a result, the effects of gradation parameter on stress distribution were presented. Keywords: Functionally graded cylinders, Thermal elastic stress, Elastic limi

A Study on the Relationship between the Levels of Loneliness and Smartphone Addiction of Students who are Studying at the Faculty of Sports Science

The main purpose of this study is to investigate the relationship between loneliness and smartphone addiction of students studying at the faculty of sports sciences. The study was conducted with the correlational survey method. The study group consisted of a total of 281 students, 61 females (21.7%) and 220 males (78.3%). In the study, Mobile telephone addiction scale developed by Sar, Ayas, and Horzum (2015) was used to investigate the mobile phone addiction levels of the participants. Loneliness scale developed by Demir (1989) was used to measure loneliness levels. According to the results of the study, there was no statistically significant difference between loneliness and smartphone addiction of students according to gender and academic achievement variables. On the other hand, there was a significant difference between loneliness and smartphone addiction according to the departments of the students. Looking at the relationship between loneliness and smartphone addiction levels, it was concluded that there was a statistically significant positive correlation between all sub-dimensions of smartphone addiction and smartphone addiction total score

Mogu li parametri kompletne krvne slike predvidjeti duboku vensku trombozu?

The aim of this study was to evaluate complete blood cell count parameters including red blood cell indices, white blood cell subtypes, and platelet indices for predicting deep vein thrombosis (DVT). A total of 71 (44 male and 27 female) patients with acute femoral and popliteal DVT diagnosed by doppler ultrasonography during a period of seven years (2011-2017) were included in the study. By matching age and gender, 142 (88 male and 54 female) subjects diagnosed with venous insufficiency in the same time interval were assigned as control group. Data were obtained by reviewing hospital records of the study participants, including clinical and demographic characteristics and complete blood cell parameters. Frequencies of hypertension, diabetes mellitus, chronic obstructive pulmonary disease, chronic renal failure, and coronary arterial disease were higher in DVT group as compared to non-DVT group (p<0.05). Hemoglobin and lymphocyte values were lower, and red blood cell distribution width, neutrophil, neutrophil to lymphocyte ratio, and platelet to lymphocyte ratio higher in DVT group as compared with non-DVT group (p<0.05). There was no significant between-group difference in terms of mean corpuscular volume, platelet, mean platelet volume, mean platelet volume to platelet ratio, and platelet distribution width (p>0.05). Hypertension, hemoglobin, neutrophil to lymphocyte ratio, and platelet to lymphocyte ratio were independent risk factors for DVT. We found that hypertension, anemia, neutrophil to lymphocyte ratio, and platelet to lymphocyte ratio were independent risk factors for DVT. In particular, neutrophil to lymphocyte ratio and hemoglobin may be used as novel, inexpensive, and reliable diagnostic tools for DVT.Cilj ovoga istraživanja bio je procijeniti parametre kompletne krvne slike (KKS) uključujući eritrocitne indekse, podvrste leukocita i trombocitne pokazatelje za predviđanje duboke venske tromboze (DVT). U istraživanje su bila uključena 44 bolesnika i 27 bolesnica, ukupno njih 71, s akutnom femoralnom i poplitealnom DVT dijagnosticiranom Dopplerovom ultrasonografijom tijekom sedam godina (2011.-2017.) i 142 ispitanika (88 muškaraca i 54 žena) izjednačenih po dobi i spolu te s dijagnozom venske insuficijencije postavljenom u istom razdoblju kao kontrolna skupina. Potrebni podaci za sve ispitanike dobiveni su iz njihovih bolničkih zapisa, uključujući kliničke i demografske karakteristike i parametre KKS. Učestalost hipertenzije, šećerne bolesti, kronične opstruktivne plućne bolesti, kroničnog bubrežnog zatajenja i koronarne arterijske bolesti bila je viša u skupini s DVT u usporedbi sa skupinom bez DVT (p<0,05). Vrijednosti hemoglobina i limfoctia bile su niže, a širina distribucije eritrocita, neutrofil, omjer neutrofila i limfocita te omjer trombocita i limfocita bili su viši u skupini s DVT u usporedbi sa skupinom bez DVT (p<0,05). Nije bilo značajne razlike među skupinama u vrijednostima srednjeg korpuskularnog volumena, trombocita, srednjeg volumena trombocita, omjera srednjeg volumena trombocita i širine distribucije trombocita (p>0,05). Hipertenzija, hemoglobin, omjer neutrofila i limfocita te omjer trombocita i limfocita pokazali su se kao neovisni čimbenici rizika za DVT. Utvrdili smo da su hipertenzija, anemija, omjer neutrofila i limfocita te omjer trombocita i limfocita neovisni čimbenici rizika za DVT. Naročito bi se omjer neutrofila i limfocita te hemoglobin mogli rabiti kao novi, jeftini i pouzdani dijagnostički alati za DVT

Mid-term outcomes of thoracic endovascular aortic repair for complicated type B aortic dissection

Objectives: The aim of this study was to evaluate the mid-term outcomes of thoracic endovascular aortic repair (TEVAR) of complicated type B aortic dissection. Patients and methods: This retrospective study included a total of 29 consecutive patients (27 males, 2 females; mean age 61.1±11.8 years; range, 34 to 80 years) who underwent TEVAR due to complicated type B aortic dissection at our center between March 2015 and December 2018. All pre-, intra-, and postoperative data were collected. Surgical and discharge notes were reviewed. Results: Of the patients, 27 had hypertension and seven had coronary artery disease. The mean maximum aortic diameter was 50.5±7.7 mm. Suspicion of impending rupture was the most (n=13) associated complication with type B aortic dissection. Six patients (20.7%) had rupture and 10 patients (34.5%) had uncontrolled hypertension. The procedure was performed under elective conditions in 18 patients (62.1%) and under emergency setting in 11 patients (37.9%). Early mortality was developed in one patient (3.4%) due to low cardiac output syndrome. The mean follow-up was 25±11 months. Late mortality occurred in two patients (6.9%) due to lung cancer and sepsis. The overall survival rate was 86.1±9.8% and freedom from aortic re-intervention was 88.8±7.5% at 50 months. Conclusion: Our study results show that TEVAR is a safe procedure associated with good postoperative outcomes, and outstanding mid-term results in complicated type B aortic dissection

Urinary tract infection in pregnant population, which empirical antimicrobial agent should be specified in each of the three trimesters?

Objective: We aimed to investigate the bacterial profile and the adequacy of antimicrobial treatment in pregnant women with urinary tract infection. Material and Methods: This retrospective observational study was conducted with 753 pregnant women who needed hospitalization because of UTI in each of the three trimesters. Midstream urine culture and antimicrobial susceptibility tests were evaluated. Results: E.Coli was the most frequently isolated bacterial agent (82.2%), followed by Klebsiella spp. (11.2%). In each of the three trimesters, E.Coli remained the most frequently isolated bacterium (86%, 82.2%, 79.5%, respectively), followed by Klebsiella spp. (9%, 11.6%, 12.2%, respectively). Enterococcus spp. were isolated as a third microbial agent, with 43 patients (5.7%) in the three trimesters. The bacteria were found to be highly sensitive to fosfomycin, with 98-99% sensitivity for E.Coli and 88-89% for Klebsiella spp. and for Enterococcus spp. 93-100% nitrofurantoin sensitivity for each of the three trimesters. Conclusions: We demonstrated that E.Coli and Klebsiella spp. are the most common bacterial agents isolated from urine culture of pregnant women with UTI in each of the three trimesters. We consider fosfomycin to be the most adequate first-line treatment regimen due to high sensitivity to the drug, ease of use and safety for use in pregnancy

The Appearances of Brain Metastases of Small Cell Lung Cancer on 18F-FDG PET/CT

Purpose: We evaluate the appearances of the brain metastases (BMs) detected by brain magnetic resonance imaging (MRI) of small cell lung cancer (SCLC) on 18Fluor-Fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT). Patients and methods: SCLC patients who had an 18F-FDG PET/CT scan and a brain MRI within 30 days for initial staging were included. MRI was used to detect BMs. The imaging results of BMs on 18F-FDG PET/CT were assessed. On the 18F-FDG PET/CT study, the BMs were classified as undetectable, hypometabolic, hypermetabolic, or mixed patterns (lesions with both hypermetabolic and hypometabolic parts). Results: A total of 51 patients [48 (94.1%) of whom were male and 3 (5.9%) female, with an average age of 62.57 ± 9.64] were included in this study. Fifteen patients (29.4%) were in the limited stage, whereas 36 patients (69.6%) were in the extensive stage. In 11 individuals, MRI indicated 28 BMs. On 18F-FDG PET/CT, 13 of the 28 metastases were visible. The following were the BMs appearances on 18F-FDG PET/CT: hypometabolic (n: 4), hypermetabolic (n: 6), and mixed (n: 3). While the mean diameter of BMs detected in 18F-FDG PET/CT was 16mm; the mean diameter of undetected ones was 4.3 mm. Conclusion: On 18F-FDG PET/CT, BMs can have a variety of appearances, including hypometabolic, hypermetabolic, and mixed patterns. On the other hand, failure to detect millimetric size BMs in 18F-FDG PET/CT prevents proper staging