Celal Bayar University

About: Celal Bayar University is a education organization based out in Magnesia ad Sipylum, Turkey. It is known for research contribution in the topics: Population & Heat transfer. The organization has 2960 authors who have published 6024 publications receiving 100646 citations.

Relationship of sleep quality and quality of life in children with monosymptomatic enuresis.

Abstract: Background Health-related quality of life (QoL) in children with monosymptomatic nocturnal enuresis might be influenced by impaired quality of sleep. The aim of this study was to evaluate possible deteriorations in QoL and sleep quality and the association between these parameters in children with monosymptomatic nocturnal enuresis. Methods The study consisted of 44 children with monosymptomatic nocturnal enuresis and 27 healthy controls aged 6–15 years. KINDL QoL and Pittsburgh Sleep Quality Index (PSQI) were applied to all children. Results Mean total KINDL scores in enuresis and control groups were 65.1 ± 11.0 vs. 67.4 ± 13.7, respectively (P = 0.44). PSQI scores were not significantly different between the groups (P > 0.05l). In the enuresis group, age showed significant negative correlation with self-esteem domain of KINDL (r = −0.39, P = 0.01) and positive correlation with sleep duration sub-score of the PSQI (r = 0.37, P = 0.03). Duration of enuresis showed significantly negative correlation with total KINDL score and self-esteem domain (r = −0.32 and r = −0.39, P = 0.04 and P = 0.01, respectively). There was significant correlation between physical well-being sub-score of KINDL with daytime dysfunction and total scores of PSQI (r = −0.53, P = 0.001 and r = −0.41, P = 0.02, respectively). Daytime dysfunction sub-score of PSQI was significantly correlated with friends sub-score of KINDL (r = −0.33, P = 0.04). Conclusions As age of the child and duration of enuresis increase, self-esteem domain of QoL worsens. Moreover, there is a significant correlation of physical well-being and friends domains of QoL score and total and daytime dysfunction scores of PSQI. These findings necessitate global evaluation of QoL and sleep quality in children with monosymptomatic nocturnal enuresis to increase efficacy of health care.

Gingival crevicular fluid and salivary HIF-1α, VEGF, and TNF-α levels in periodontal health and disease.

Abstract: BACKGROUND Hypoxia-inducible factor-1 alpha (HIF-1α) is expressed as an adaptive response to hypoxia, mediates angiogenesis through the expression of vascular endothelial growth factor (VEGF) and can be induced by tumor necrosis factor-alpha (TNF-α). This study aimed to investigate the gingival crevicular fluid (GCF) and salivary HIF-1α, VEGF, and TNF-α levels in periodontal health and disease. METHODS A total of 87 individuals, 20 generalized aggressive periodontitis (G-AgP), 20 chronic periodontitis (CP), 26 gingivitis patients, and 21 periodontally healthy individuals, were included. Clinical periodontal parameters were recorded; GCF and salivary samples were collected; and HIF-1α, VEGF, and TNF-α levels were measured by enzyme-linked immunosorbent assay. Nonparametric tests were used for the statistical analyses. RESULTS G-AgP and CP groups had significantly higher GCF HIF-1α, VEGF, and TNF-α total amounts than gingivitis and healthy groups (P 0.05). Salivary HIF-1α concentrations in gingivitis group were significantly higher than G-AgP and healthy groups (P < 0.05). GCF HIF-1α, VEGF, and TNF-α total amounts were positively correlated with the site-specific clinical periodontal parameters and with each other (P < 0.05). CONCLUSIONS HIF-1α is detectable in GCF and saliva of periodontally diseased and healthy individuals, and the GCF levels of the biomarker can be affected by disease status. Increased GCF HIF-1α, VEGF, and TNF-α levels in both chronic and aggressive form of periodontitis might suggest the role of TNF-α/HIF-1α/VEGF pathway in the pathogenesis of periodontal diseases.

Effects of meteorological variables on exergetic efficiency of wind turbine power plants

Abstract: This present paper deals with exergy efficiency results of the Wind Turbine Power Plants (WTPPs). Effects of meteorological variables such as air density, pressure difference between state points, humidity, and ambient temperature on exergy efficiency are discussed in a satisfactory way. Some key parameters are given monthly for the three turbines. Exergy efficiency differs from 0.23 to 0.27 while temperature is changing from 268.15 K to 308.15 K with air density 1.368–1.146 (kg/m3). While pressure difference (ΔP) between inlet and outlet of the turbine differs from 100 to 1100 (Pa), exergy efficiency decreases fairly for different wind speeds. While specific humidity is changing from 0.001 to 0.015 (kgwater/kgdry air), exergy efficiency decreases gently. Generally these meteorological variables are neglected while planning WTPPs, but this neglect can cause important errors in calculations and energy plans. Obtained results indicate that while planning WTPPs meteorological variables must be taken into account.