Manisa Celal Bayar Üniversitesi Akademik Arşiv Sistemi
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Thermal and Phase Change Process in a Locally Curved Open Channel Equipped with PCM-PB and Heater during Nanofluid Convection under Magnetic Field
No full textThermal performance and phase-change dynamics in a channel having a cavity equipped with a heater and phase-change material (PCM)-packed bed (PB) region are analyzed during nanoliquid convection under an inclined magnetic field. Curvature of the upper wall above the PCM zone is also considered by using the finite element method. Impacts of curvature of the upper wall (between 0.01H and 0.6H, H-channel height), strength of magnetic field (MGF) (Hartmann number between 0 and 40), height (between 0.1H and 0.4H) and number (between 5 and 17) of heaters on the thermal performance and phase-change dynamics are studied. In the interior and wall near regions of the PCM-PB, the curvature effects become opposite, while phase completion time (tF) rises by about 42% at the highest radius of the curvature. Imposing MGF and increasing its strength has positive impacts on the phase change and thermal performance. There is a reduction in tF by about 45.2% and 41.8% when MGF is imposed at Ha = 40 for pure fluids and nanofluids. When thermal performance for all different cases is compared, using MGF+nanofluid+PCM provides the most favorable case. When the reference case (only pure fluid without MGF and PCM) is used, including nanoparticles results in an improvement of 33.7%m while it is further increased to 71.1% when PCM-PB is also installed. The most favorable case by using MGF, nanofluid and PCM-PB results in thermal performance improvement of about 373.9% as compared to the reference configuration
A New Approach for Determining the Spatial Risk Levels for Visceral and Cutaneous Leishmaniasis related with the Distribution of Vector Species in Western Part of Turkey using Geographical Information Systems and Remote Sensing
No full textLeishmaniases are present in two clinical forms, as visceral and cutaneous, in Turkey showing a tendency of spreading throughout the country. The aim of the present study was to produce a new model for determining the spatial risk levels using the data in a selected study site in the western part of Turkey. The results of entomological studies in this leishmaniasis focus indicated the presence of suspected vector species Phlebotomus (Larroussius) tobbi and P (Larroussius) neglectus for the visceral, P (Paraphlebotomus) similis for cutaneous forms of the disease. The new risk model was developed based on univariate and multivariate binary logistic regression analyses of geographical variables as altitude, aspect, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI) and Land Surface Temperature (LST) values related to the distribution of these three species. The results of the new model were used to produce the risk maps and the potential distribution areas of the incriminated vector species with the use of geographical technologies which allowed the identification of the leishmaniasis risk levels that may provide useful information to guide the control program interventions
Validation and Reliability Study of the Turkish Version of the Social Health Scale for the Elderly
No full textObjective: To evaluate the psychometric properties of the Turkish version of the Social Health Scale for The Elderly (SHSE) scale. Materials and Methods: This methodological study was conducted with aged >= 60 years living in two urban and semi-urban neighborhoods in Balikesir between September 2020 and November 2020 by holding face-to-face interviews. The data of the study were collected using the SHSE, multidimensional scale of perceived social support, EuroQol-5D (EQ-5D) quality of life questionnaire, and WHO-5 Well-Being Index. In the analysis, in addition to descriptive findings, Cronbach's alpha value and confirmatory factor analysis were performed using SPSS 25.0, jasp 0.14, and lisrel 9.1. Results: Cronbach's alpha values for the overall SHSE and its perceived environmental resource (PER), social adjustment (SA), and social support (SS) subdimensions were 0.89, 0.95, 0.63, and 0.54, respectively. The confirmatory factor analysis summary goodness of fit values of the scale were 0.067 for the root mean square error of approximation, 0.968 for the comparative fit index, and 0.087 for the standardized root mean square residual. The test-retest correlation coefficient of the scale was 0.99 for the overall SHSE and 1.00, 1.00, and 0.95 for its PER, SA, and SS subdimensions, Conclusion: The SHSE used in this study is a valid and reliable scale for Turkish society. It contains psychometric features that can be used in the assessment of the social health of the elderly. The SHSE can be used not only to investigate the risks or protective factors of social health but also to comprehensively assess health status in conjunction with other health domains
Histologic grading of urothelial papillary neoplasms: impact of combined grading (two-numbered grading system) on reproducibility
No full textThe clinical management of tumor patients is often strongly infuenced by the tumor grade. The presence of heterogeneity is well recognized in a variety of tumors. Overall grade is based on highest grade area identified within a tumor. Urothelial carcinoma often contains different histological grades within the same tumor. This study investigates the impact of a combined grading system on the reproducibility of papillary urothelial neoplasms. A set prepared for an earlier study consisting of ten cases of each category (papillary urothelial neoplasm of low malignant potential (PUNLMP), LGPUC, and HGPUC) was used. Agreement between pairs of pathologists was evaluated using kappa statistics for the combined scoring system. Interobserver agreement was fair to substantial as reflected by kappa values ranging from 0.24 to 0.74 (mean kappa = 0.43). The combined scores of 2 and 3 which included PUNLMP showed the lowest degree of agreement and when this category was excluded from the analysis, interobserver agreement increased significantly (mean kappa = 0.65; ranging from 0.43 to 0.92) in terms of combined scores of 4, 5, and 6. PUNLMP has been shown to be the least reproducible component of a combined scoring system even among experienced observers. Exclusion of PUNLMP from grading scheme seems to improve interobserver variability
Dual Darboux Frame of a Timelike Ruled Surface and Darboux Approach to Mannheim Offsets of Timelike Ruled Surfaces
No full textIn this paper, we introduce the dual geodesic trihedron (dual Darboux frame) of a timelike ruled surface. By the aid of the E. Study Mapping, we consider timelike ruled surfaces as dual hyperbolic spherical curves and define the Mannheim offsets of timelike ruled surfaces by means of dual Darboux frame. We obtain the relationships between invariants of Mannheim timelike surface offsets. Furthermore, we give the conditions for these surface offsets to be developable
Pyogenic Granuloma in Two Children Successfully Treated with Imiquimod 5% Cream
No full textPyogenic granulomas are sometimes difficult to treat in children, especially very young children in whom surgical procedures may be difficult. Here, we present two children with pyogenic granuloma who were successfully treated by topical imiquimod cream with excellent results
The frequency of sexual-physical abuse history in irritabl bowel syndrome patients and diagnostic relation with major depressive disorder history
No full textObjective: IBS is a functional disorder which is one of the most common causes of gastroentrology doctor visits. Besides multiple factors suggested for the etiology of IBS, the co-morbidity of psychiatric illnesses, of which MDD is most the frequent, is also noted. Being exposed to sexual or physical abuse is also considered as a risk factor for the development of IBS. Methods: In this study the differences between IBS patients and non-IBS control cases are evaluated regarding the history of major depressive disorder and sexual or physical abuse. Fiftyfour IBS and thirty control cases (mean age for IBS patients 41 +/- 11; for control group 34 +/- 12 years; p0.05) or physical abuse (19% for the IBS group, n=10; 13% for the control group, n=4; p>0.05). Discussion: IBS and MDD are frequently co-morbid and this co-morbidity suggests a possible common point for the etiopathogenesis for both disorders. Nevertheless, the contribution of sexual or physical abuse to the co-morbidity of these disorders seems to be inconclusive. It can be suggested that sexual and physical abuse history do not have fundemental importance for the development of IBS in our patients. (Anatolian Journal of Psychiatry 2010; 11:120-126
A candidate-identification questionnaire for patients with postmenopausal osteoporosis switched from treatment with a daily or weekly bisphosphonate to once-monthly ibandronate
No full textImportance of Inhaler Device Use Status in the Control of Asthma in Adults: The Asthma Inhaler Treatment Study
No full textBACKGROUND: Proper education and training in correct inhalation technique has been reported to have a substantial role in the achievement of optimal therapeutic benefit and asthma control. The present study was designed to evaluate inhaler technique and the role of education in relation to asthma control among patients with persistent asthma in Turkey. METHODS: A total of 572 patients with persistent asthma (mean +/- SD age 42.7 +/- 12.2 y, 76% females) were included in this non-interventional, observational, registry study conducted across Turkey. Data on the effective and correct use of inhaler devices were collected via the Ease of Use for the Inhaler Device Questionnaire to patients and physicians. RESULTS: Asthma control (overall 61.5% at baseline, and increased to 87.3% during follow-up) was better, with significant improvement in technique and decrease in basic errors to the range 0-1, regardless of the inhaler type. Overall, the most common basic error associated with inhalation maneuvers was failure to exhale before inhaling through the device (18.9%). There was concordance between the patients and physicians in the ratio of correct inhaler technique only for spray-type inhalers. CONCLUSIONS: Close follow-up with repeated checking of the patient's inhaler technique and correction of errors each time by a physician seem to be associated with a significant decrease in the percent of patients who make basic errors in inhalation maneuvers and device-independent errors, and with better control of persistent asthma
An Indicator Based Assessment for Water Resources Management in Gediz River Basin, Turkey
No full textIn this study, a water resources management model that facilitates indicator-based decisions with respect to environmental, social and economic dimensions is developed for the Gediz River Basin in Turkey The basic input of the proposed model is the quantity of surface water that is greatly allocated to irrigation purposes, therefore supply and demand interrelations in agricultural water use constitute the main focus of the study The model has been applied under three different hydro-meteorological scenarios that reflect baseline as well as better and worse conditions of water supply and demand, not only to reach an assessment of water budget, but also to evaluate the imp acts of proposed management alternatives under different conditions The Water Evaluation and Planning (WEAP) software is used as a simulation and evaluation tool to assess the performance of possible management alternatives, which is measured by nine proposed indicators The results of the study have indicated that the Gediz River Basin is quite sensitive to drought conditions, and the agricultural sector is significantly affected by irrigation deficits that increase sharply in drought periods Even if the optimistic scenario is assumed to occur, it is not possible to observe a significant improvement in the water budget, however, the negative impacts of climate change can possibly exacerbate the water crisis The Indicators also verified that, efficient water management is crucial to ensure the sustainable use of water resources with respect to environmental, social and economic dimension