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Koleksiyondaki öğeler
- BildiriYalnız künye2012Scopus SJRQ2The investigation on physico-chemical parameters of the textile effluents after treatment by white rot fungus Pleurotus djamor
Yildirim, Numan; Tanyol, Mehtap; Dere, Turgay; Cumurcu, Aysenur; Yildiz, Abdunnasir
AtıfWoS3OpenAlex4
İncele - MakaleYalnız künye2013Scopus SJRQ2THE EFFECTS OF HYDROXYUREA DERIVATIVE 1, 3, 4-THIADIAZOLES ON SERUM BIOCHEMICAL PARAMETERS AND ANTIOXIDANT STATUS IN LIVER OF RATS
Karagozoglu, Yusuf; Türkoglu, Semra; Parlak, Akif E.; Alayunt, Naci O.
In this study, it was aimed to investigate the antioxidant and antihepatotoxic effect of hydoxyurea derivative 1,3,4-thiadiazoles on serum biochemical parameters (AST, ALT, LDH, urea, creatinine and total bilirubin) and antioxidant parameters (SOD, CAT, GPX, MDA). In our study, a total of 35 adult male wistar rats were divided into 5 equal groups. DMSO diluted with only corn oil, was injected to the control group. 25 mg/kg ligand, 25 mg/kg thiadiazole-manganese, 25 mg/kg thiadiazole-cadmium and 25 mg/kg thiadiazole-chrome complexes was injected to the experimental groups rats subcutaneously for 15 days with three-day interval during the test. After blood samples were centrifuged AST, ALT, LDH enzyme activites hepatic injury; and then, the activites of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), and the level of malondialdehyde (MDA) in liver tissues were determined spectrophotometrically. The level of AST was found to be lower (p<0.05) in the Cr-L group than in other groups. The levels of ALT and total bilirubine were found to be lower (p<0.05) in the Cd-L group than in other groups. The level of SOD was found to be higher (p<0.05) in the Cd-L group than in other groups. The levels of GPX was found to be lower (p<0.05) in the Cr-L group than in other groups. As a result, it can be concluded that their pharmacological characteristics can be beneficial in many fields of application because hydroxyurea derivative 1,3,4 thiadiazole compounds show the antioxidant and antihepatotoxic activity.
AtıfWoS1İncele - MakaleYalnız künye2013Scopus SJRQ3The Anesthetic Effects of Clove Oil and 2-Phenoxyethanol on Rainbow Trout (Oncorhynchus mykiss) at Different Concentrations and Temperatures
Yildiz, M.; Kayim, M.; Akin, S.
In this study, anesthetic effects of five different concentrations of 2-phenoxyethanol (0.2, 0.3, 0.4, 0.5 and 0.6 ml/L) and clove oil (0.50, 0.75, 1.00, 1.25 and 1.50 ml/L) on rainbow trout (Oncorhynchus mykiss) were studied at temperatures 7, 13 and 18 degrees C. For this purpose, 900 fish (39.08 +/- 1.13 g and 15.48 +/- 0.21 cm) were used in the experiment. Induction time of 2-phenoxyethanol and clove oil varied between 1.05 and 3.36 min at all concentrations, except for 0.2 ml/L (for 2-phenoxyethanol only) and at every temperature application. Full recovery time occurred between 2.44 and 7.14 min for 2-phenoxyethanol and 3.23 - 6.11 min for clove oil. It was found that full recovery times significantly increased with increase in 2-phenoxyethanol concentrations (r(2)=0.81). The same increasing trend was observed in clove oil, but the increase was not strong compared to 2-phenoxyethanol (r(2)=0.21). On the other hand, full induction times of 2-Phenoxyethanol and clove oil significantly declined with the increase in concentrations (r(2)=0.74; r(2)=0.84 for 2-phenoxyethanol and clove oil, respectively). Based on the ideal induction (less than 3 min) and recovery (less than 5 min) time criteria, it can be suggested that the most appropriate concentrations for rainbow trout were 0.3, 0.4 and 0.5 ml/L for 2-phenoxyethanol and 0.50, 0.75 and 1.00 ml/L for clove oil.
AtıfWoS16İncele - MakaleYalnız künye2010Scopus SJRQ3Fecundity and Egg Size of Three Salmonid Species (Oncorhynchus mykiss, Salmo labrax, Salvelinus fontinalis) Cultured at the Same Farm Condition in North-Eastern, Turkey
Serezli, Ramazan; Guzel, Senol; Kocabas, Mehmet
In this study, fecundity and egg size of rainbow trout (Oncorhynchus mykiss), Black Sea trout (Salmo labrax) and brook trout (Salvelinus fontinalis) were examined. Two and six years old female fish reared in commercial fish farm were used and the female size, total and relative fecundity and egg size (mm) were determined for the broodstock fish of three tested species. The average weights of broodfish of rainbow trout, Black Sea trout and brook trout 1.357.27+/-406, 532+/-673.7 and 310.40+/-85.0 g, respectively. The total fecundity (number of eggs fish(-1)) was 2.809+/-791, 1.401+/-1374 and 723+/-320, the relative fecundity (number of eggs kg(-1) fish) was 2.180+/-676, 3.558+/-1307 and 2.571+/-1530 and the egg size (mm); 4.95+/-0.2, 4.51+/-0.67 and 4.49+/-0.21 were determined for rainbow trout, Black Sea trout and brook trout, respectively. A significant linear relationship was found total fecundity and the post-stripped fish weight of Black Sea trout (r = 0.96), but this relationship was low for the rainbow trout (r = 0.28) and brook trout (r = 0.17). A negative relationship was observed between the relative fecundity and brood size in rainbow trout (r = 0.57), Black Sea trout (r = 0.58) and brook trout (r = 0.54). A significant linear relationship was observed in rainbow trout (r = 0.63), Black Sea trout (r = 0.86) and brook trout (r = 0.41) (p<0.01).
AtıfWoS13İncele - MakaleAçık Erişim2016Scopus SJRQ2Toxicity of Engineered Nickel Oxide and Cobalt Oxide Nanoparticles to Artemia salina in Seawater
Ates, Mehmet; Demir, Veysel; Arslan, Zikri; Camas, Mustafa; Celik, Fatih
In this study, the effects of exposure to engineered nickel oxide (NiO 40-60 nm) and cobalt oxide (CoO < 100 nm) nanoparticles (NP) were investigated on Artemia salina. Aggregation and stability of the aqueous NP suspensions were characterized by DLS and TEM. Acute exposure was conducted on nauplii (larvae) in seawater in a concentration range from 0.2 to 50 mg/L NPs for 24 h (short term) and 96 h (long term). The hydrodynamic diameters of NiO and CoO NPs in exposure medium were larger than those estimated by TEM. Accumulation rate of NiO NPs were found to be four times higher than that of CoO NPs under the same experimental conditions. Examinations under phase contrast microscope showed that the nanoparticles accumulated in the intestine of Artemia, which increased with increasing exposure concentration. Differences were observed in the extent of dissolution of the NPs in the seawater. The CoO NPs dissolved significantly while NiO NPs were relatively more stable. Oxidative stress induced by the NP suspensions was measured by malondialdehyde assay. Suspensions of NiO NPs caused higher oxidative stress on nauplii than those of CoO NPs. The results imply that CoO and NiO NPs exhibit toxicity on Artemia (e. g., zooplankton) that is an important source of food in aquatic food chain.
AtıfWoS59OpenAlex71İncele - MakaleAçık Erişim2014Scopus SJRQ2Morphological, karyological features and pollen morphology of endemic Ebenus haussknechtii Bornm. ex Hub.-Mor. from Turkey: A traditional medicinal herb
Hayta, Sukru; Tasar, Neslihan; Cakilcioglu, Ugur; Gedik, Osman
In this study, morphological, morphometrical, karyological and detailed pollen morphology of Ebenus haussknechtii endemic to Turkey was studied for the first time. In the morphologic study, some morphological and morphometrical features of the plant were observed and compared with the published findings in the Flora of Turkey. Karyogram and idiograms of the plant were also prepared. The chromosome number of E. haussknechtii was determined as 2n = 14 and haploid karyotype formula 5 m + 1 sm + 1M. Metaphase chromosome length ranged from 2.16 to 1.93 mu m and the total haploid chromosome length was 17.90 mu m. The results of the light microscope investigation of the pollen revealed that the pollen grains were radially symmetrical, isopolar, tricolpate and prolate. Measurement of the reticulum heterobrachate indicated their ornamentation to be reticulate. (C) 2014 Elsevier GmbH. All rights reserved.
AtıfWoS16OpenAlex15İncele - MakaleAçık Erişim2018Reproduction Biology of Capoeta trutta (Heckel, 1843) in the Uzuncayir Dam Lake
Gündüz, Fatih; Çoban, M. Zulfu; Yüksel, Fahrettin; Demirol, Ferhat; Alpaslan, Kenan; Alp, Ahmet
In the study, on the purpose of contribute to sustainable fisheries strategies. the reproductive characteristics of Capoeta trutta in Uzuncayir Dam Lake were investigated. The fish samples were caught from Uzuncayir .Dam Lake by using gill nets with different mesh sizes (36-100 mm) between January - December 2013. During research period, a total of 385 C t mita samples that were caught from Uzuncayir Dam Lake yielded 167 female (43.00%) and 218 male (57.00%) with an age composition of population varied from I to XII age groups. GSI values reached a maximum in May and rapidly declined after that month, and it can be concluded that C trutta in Uzuncayir Dam Lake deposites its sperms and eggs between May-July. Egg size varied between 0.30-1.07 mm in dimeter. The relationships between fecundity-total length and fecundity-total weight were determined respectively as r= 29.708*TL-593.36 (N= 35. r= 0.27), F = 9.6148*W+5488.3 (N= 35. r= 0.38). The fecundity of C trutta individuals changed from 1362 to 15428 according to age groups. Sexual maturity length was determined as 20.77 cm and 19.35 cm for female and males. respectively.
AtıfWoS1OpenAlex3İncele - MakaleYalnız künye2011Scopus SJRQ1Petrology and petrogenesis of carbonatitic rocks in syenites from central Anatolia, Turkey
Cooper, Alan F.; Boztug, Durmus; Palin, J. Michael; Martin, Candace E.; Numata, Mihoko
The late Cretaceous A-type Kara double dagger ayA +/- r pluton in Central Anatolia, Turkey, intrudes and entrains xenoliths of Palaeozoic limestone. Carbonatitic magmatic rocks within the syenite have been previously interpreted (Schuiling in Nature, 192:1280, 1961) to result from metasomatic alteration and syntectic melting of marble. Carbonatites and associated calcite-syenites exhibit mineralogical characteristics (Ab-rich plagioclase, Ba-rich K-feldspar, low-Mg# biotite) that are petrogenetically more evolved than the host syenitic suite. Geochemically, carbonate-rich magmatic rocks are greatly enriched in Sr, Ba, Th, and REE and have higher LREE/HREE ratios than either syenites or marbles. In terms of O-C-Sr-Pb isotope ratios, the carbonatite/calcite-syenite suite form a consistent and geochemically coherent group that is distinct from the marble country rock and xenolith population, but similar to some of the syenitic, and particularly the nepheline syenite components of the Kara double dagger ayA +/- r pluton. Other silicate magmatic rocks are geochemically, isotopically, and geochronologically different, suggesting the pluton is composite. Overall, the mineralogical and geochemical characteristics of the carbonatites are incompatible with binary mixing of syenite and marble but are consistent with derivation of carbonatite from petrogenetically evolved foid syenite. Carbonate-silicate rock types have modal variations compatible with an origin by fractional crystallisation, rather than by liquid immiscibility.
AtıfWoS17OpenAlex17İncele - MakaleYalnız künye2012Scopus SJRQ2A COMPUTER SIMULATION MODEL TO REDUCE PATIENT LENGTH OF STAY AND TO IMPROVE RESOURCE UTILIZATION RATE IN AN EMERGENCY DEPARTMENT SERVICE SYSTEM
Gul, Muhammet; Guneri, Ali Fuat
This paper presents a case study of a discrete-event simulation (DES) model of an emergency department (ED) unit in a regional university hospital in Turkey. In this paper emergency department operations of the hospital were modeled, analyzed and improved. The goal of the study is to reduce patient average length of stay (LOS) and to improve patient throughput and utilization of locations and human resources (doctors, nurses, receptionists). Some alternative scenarios in an attempt to determine optimal staff level were evaluated. These alternative approaches illustrate that vital improvement in LOS and throughput can be obtained by minor changes in shift hours and number of resources. Considering future changes in patient demand a scenario which reduces LOS and improves throughput is available in the paper. Significance: The Key Performance Indicators (KPIs) to determine and improve system performance in healthcare emergency departments consist of to reduce patient average length of stay (LOS), to improve patient throughput and resource utilization rates. Alternative scenarios and optimal staff levels are enhanced within the scope of this study.
AtıfWoS53İncele - MakaleÖn baskısı açık2014Scopus SJRQ3Sensorless vector control of PMSM with non-sinusoidal flux using observer based on FEM
Oksuztepe, Eyyup; Omac, Zeki; Kurum, Hasan
Back electromotive force method has been widely used in the position and speed sensorless control of permanent magnet synchronous motors. In this method, it is supposed that the back electromotive forces induced on the stator windings by the rotor permanent magnets are sinusoidal. This assumption causes errors in the estimation of speed and position. In this paper, an observer using the stator winding linkage flux model obtained by using finite element method for position and speed sensorless field-oriented control of permanent magnet motor is proposed. The validity of the proposed method is demonstrated using DS 1104.
AtıfWoS11OpenAlex12İncele - BildiriAçık Erişim2010The associations between university students' transformational leadership characteristics and dysfunctional limitedness perceptions
Barut, Yasar; Gokalp, Murat; Akdenk, Mursel; Kalafat, Temel; Mentese, Sabit
The aim of this study was to explore associations between transformational leadership and limitedness schemas of university students. Data were collected from 66 male (34.2%) and 127 females (65.8%), a total of 193 university students. The minimum age was 17 and the maximum age was 23. The mean age of the sample was 19.62 years with a standard deviation of 1.21. The results reveal that females have higher scores than males with regard to transformational leadership characteristics. Comparison of the differences between male and female subjects in terms of limitedness orientation showed that males reported higher scores than females on limitedness schemas. In addition, limitedness about relations and limitedness about the world were significantly associated with transactional leadership and a laissez-faire philosophy, but connections of dysfunctional limitedness schemas with transformational leadership were not significant. (C) 2010 Elsevier Ltd. All rights reserved.
AtıfWoS3OpenAlex7İncele - MakaleAçık Erişim2024Anti-inflammatory activity of a novel lectin isolated from Pleurotus eryngii var. ferulae mushroom
Seliman, Thoiba Mogahid Hussein; Ülbegi, Gulsum Altiparmak; Ozsoy, Nurten; Kavlo, Hevidar Alp; Sagirli, Pinar Aksoy
Background and Aims: Pleurotus species are edible mushrooms with important economic and medicinal value. Many pharmacological properties of these species, such as anticancer, immunomodulating, and anti-inflammatory activities, have been attributed to lectin. The aim of this study was to purify a novel lectin from Pleurotus eryngii var. ferulae (PEFL) and investigate its anti-inflammatory activity. Methods: PEFL was purified by 80% ammonium sulphate fractionation, diethylaminoethyl (DEAE)-Sepharose-4B anion exchange, and Sephadex G-100 gel filtration chromatography. The molar mass of the purified lectin was determined by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) under denaturing conditions. Inhibition of lectin-induced haemagglutination by several carbohydrates and one glycoprotein (ovalbumin) was also performed using the haemagglutination inhibition activity test. The anti-inflammatory effect of PEFL was tested in a lipopolysaccharide (LPS)-induced inflammation model in mouse macrophage cells (RAW 264.7). The levels of prostaglandin (PG)-E2, tumour necrosis factor-alpha (TNF-alpha), interleukin1-beta (IL-1 beta), interleukin-6 (IL-6), interleukin-10 (IL-10), and interferon-gamma (IFN-gamma) were determined using enzyme-linked immunosorbent assay (ELISA) kits. Furthermore, the expression of nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) was estimated by western blot analysis. Results: PEFL was obtained in 16% yield. The specific activity of PEFL was calculated as 1280 haemagglutinating units (HU)/mg protein and was inhibited only by D-galactose. The molecular weight was determined to be 46 kDa. PEFL showed an anti-inflammatory effect by reducing the production of pro-inflammatory PGs through COX-2 inhibition, as well as reducing iNOS expression. Furthermore, our findings reported that PEFL has a protective effect on inflammation by decreasing the production of pro-inflammatory cytokines and increasing the production of the anti-inflammatory cytokine (IL-10). Conclusion: The results suggest that PEFL can be considered as a potential therapeutic agent in the development of new therapeutic strategies for inflammatory diseases.
AtıfWoS1OpenAlex2
İncele - MakaleAçık Erişim2013Scopus SJRQ3Determination of phytochemical characteristics of the extract of Zea mays with Saccharomyces boulardii
Erecevit, Pinar; Kirbag, Sevda; Yilmaz, Okkes
Fatty acid, vitamin, phytosterol, flavonoid, and resveratrol contents and antimicrobial activities of Zea mays L. (corn) extracts treated with Saccharomyces boulardii were determined and compared. The total fatty acid, vitamin, and phytosterol contents in corn extract were at certain levels. It was detected that total fatty acid levels and vitamin contents of corn extracts prepared with Saccharomyces boulardii increased; however, flavonoid contents decreased at different rates. In addition to this, it was observed that naringin, resveratrol, and myricetin flavonoids were present in the extracts that contained S. boulardii. In the study, it was noticed that Z. mays L. (corn) had antioxidant and antimicrobial activities at different rates. It was observed that S. boulardii developing in extracts obtained from plants affected bioactive compounds at different rates.
AtıfWoS3OpenAlex4İncele - MakaleAçık Erişim2017Scopus SJRQ2Synthesis, thermal degradation and dielectric properties of poly[2-hydroxy,3-(1-naphthyloxy)propyl methacrylate]
Biryan, Fatih; Demirelli, Kadir; Torgut, Gulben; Pihtili, Guzin
2-Hydroxy-3-(1-naphthyloxy)propyl methacrylate (NOPMA) monomer was synthesized from reaction of 2-[(2-naphthyloxy)methyl]oxirane with methacrylic acid in the presence of pyridine. The polymerization of NOPMA was carried out by free radical polymerization method in the presence of AIBN at 60 A degrees C. The structure of monomer and polymer was characterized by H-1-NMR, C-13-NMR and FT-IR spectroscopy techniques. The glass transition temperature and average-molecular weights of poly(NOPMA) were measured using differential scanning calorimetry and gel permeation chromatography, respectively. The thermal degradation behavior of poly(NOPMA) has been investigated by FT-IR studies of the partially degraded polymer and thermogravimetry. The cold ring fractions (CRFs) were collected at two different temperatures, initially fraction-1 (CRF1) is from room temperature to 320 A degrees C, and the other fraction-2 (CRF2) is from 320 to 500 A degrees C. The volatile products of the degradation were trapped at -195 A degrees C (in liquid nitrogen). All the fractions were characterized by FT-IR, H-1 and C-13-NMR spectroscopic techniques, and the cold ring fractions (CRFs) were also characterized by GC-MS. For the degradation of polymer, the major compound between products of CRFs is alpha-naphthol. The GC-MS, FT-IR and NMR data showed that depolymerization corresponding to monomer was not prominent below 320 A degrees C in the thermal degradation of poly(NOPMA). The mode of thermal degradation containing formation of the major products was identified. The dielectric permittivity (epsilon'), the loss factor (epsilon aEuro(3)) and conductivity (sigma(ac)) were measured using a dielectric analyzer in the frequency range of 50 Hz to 20 kHz.
AtıfWoS17OpenAlex22İncele - MakaleAçık Erişim2024An Exploratory Study on the Application of Blockchain Technology to the Chinese Ship Auction Market
Peng, Chen; Alatas, Bilal
The Chinese ship trading market has undergone remarkable development, transitioning into a global exemplar of ship transactions. Nevertheless, this market continues to confront a series of challenges, encompassing low transaction rates, delayed transaction values, and market instability. Blockchain, with its secure, transparent, and tamper-resistant technological features, presents a potential solution for the ship trading market. Through its decentralized architecture, blockchain technology can reduce platform operational costs, enhancing market competitiveness. Concurrently, the utilization of asymmetric encryption technology can enhance the security of platform data, effectively addressing privacy concerns. Furthermore, through a sharing mechanism, blockchain can aid in establishing a unified credit evaluation system, thereby increasing market trust to address the absence of a credit evaluation system. Moreover, blockchain technology can be employed to construct a risk identification mechanism, fortifying the platform's regulatory model to address regulatory deficiencies.
AtıfWoS1OpenAlex2İncele - MakaleAçık Erişim2010Scopus SJRQ1Wavelet-based feature extraction and selection for classification of power system disturbances using support vector machines
Eristi, Hueseyin; Uçar, Ayseguel; Demir, Yakup
This paper presents a new approach for the classification of the power system disturbances using support vector machines (SVMs). The proposed approach is carried out at three serial stages. Firstly, the features to be form the SVM classifier are obtained by using the wavelet transform and a few different feature extraction techniques. Secondly, the features exposing the best classification accuracy of these features are selected by a feature selection technique called as sequential forward selection. Thirdly, the best appropriate input vector for SVM classifier is rummaged. The input vector is started with the first best feature and incrementally added the chosen features. After the addition of each feature, the performance of the SVM is evaluated. The kernel and penalty parameters of the SVM are determined by cross-validation. The parameter set that gives the smallest misclassification error is retained. Finally, both the noisy and noiseless signals are applied to the classifier given above stages. Experimental results indicate that the proposed classifier is robust and has more high classification accuracy with regard to the other approaches in the literature for this problem. (C) 2010 Elsevier B.V. All rights reserved.
AtıfWoS119OpenAlex163İncele - MakaleYalnız künye2013Scopus SJRQ2MULTI OBJECTIVE GENERALIZED RESOURCE CONSTRAINED TWO SIDED ASSEMBLY LINE BALANCING PROBLEM AND COMPUTATIONAL ANALAYSIS
Mete, Suleyman; Agpak, Kursad
Assembly of large size products like bus, truck and automobile can perform both sides of assembly line. In such cases, both sides (right and left) of the line are used to achieve for the assembly operation. These types of the lines are called as two sided assembly lines. When large size products are produced, sometimes they require a specific machine or a qualified staff to use this machine. This condition also exposes the problem of resource constraint. Therefore, in this study, a mathematical model for generalized resource constraint two sided assembly line balancing problem is presented, based on literature models and computational analysis is performed for multi-objective situation. Proposed model is run and analyzed over several known test problems by considering three objective functions (Minimization number of station, number of position and resource cost).
AtıfWoS8İncele - MakaleYalnız künye2017FUZZY LOGIC BASED INDIRECT VECTOR CONTROL OF SQUIRREL CAGE INDUCTION MOTOR
Nur, Ahmet; Omaç, Zeki; Öksüztepe, Eyyup
Squirrel cage induction motors are widely used in industry. These induction motors need smart control applications for high performance. In this paper an indirect vector control of squirrel cage induction motor is modelled mathematically. The mathematical model is moved to simulation using Matlab/Simulink software. For improvement, the indirect vector control simulation is based on fuzzy logic. Eventually, the simulation results for fuzzy logic speed control of induction motor are obtained for different reference speeds. The results showed effectiveness of fuzzy control system for indirect vector control of squirrel cage induction motor simulation model.
- MakaleAçık Erişim2009Scopus SJRQ1Heat transfer augmentation by swirl generators inserted into a tube with constant heat flux
Kurtbas, Irfan; Guelcimen, Fevzi; Akbulut, Abdullah; Buran, Dincer
A novel conical injector type swirl generator (CITSG) is devised in this study. Performances of heat transfer and pressure drop in a pipe with the CITSG are experimentally examined for the CITSGs' angle (alpha) of 30 degrees, 45 degrees and 60 degrees in Reynolds number (Re) range of 10,000-35,000. Moreover, circular holes with different numbers (N) and cross-section areas (A(h)) are drilled on the CITSG. In this way, total areas (A(t) = N . A(h)) of the holes on the CITSG are equaled each other. Besides, flow directors having three different angles (beta = 30 degrees, 60 degrees and 90 degrees) to radial direction are attached to every one of the holes. This study is a typical example for decaying flow. All experiments were conduced with air accordingly; Prandtl number was approximately fixed at 0.71. The local Nusselt number (Nu(x)), heat transfer enhancement ratio (Nu(ER)) and heat transfer performance ratio (Nu(PR)) are calculated and discussed in this paper. It is found that the Nu(ER) decreases with increase in Reynolds number, the director angle (beta), the director diameter (d), and with decrease in the CITSG angle (alpha). Likewise, variation of Nu(PR) and Nu(ER) is also essentially similar for the same independent parameters. (C) 2009 Elsevier Ltd. All rights reserved.
AtıfWoS32OpenAlex31İncele - MakaleAçık Erişim2015Scopus SJRQ3Relationship between social support and fatigue in patients with type 2 diabetes mellitus in the east of turkey
Aylaz, Rukuye; Karadag, Ezgi; Isik, Kevser; Yildirim, Melek
AimThis study was planned to assess the levels of fatigue and social support in patients with diabetes and to determine the relationship between fatigue and social support in these patients. MethodsA descriptive design was used in this research. The study was conducted between March and June 2013 with 300 sampled patients from 1657 studied participants with type 2 diabetes who presented to the diabetes polyclinics of Malatya State Hospital and Inonu University, Turgut Ozal Medical Center. The Multidimensional Scale of Perceived Social Support and the Fatigue Severity Scale were used in the study. ResultsWhen the correlation analysis carried out between fatigue severity and social support in patients with diabetes was examined, a significant relationship was found in the negative direction between fatigue severity and family support (r=-0.145, P<0.05) as well as overall support (r=-0.132, P<0.05). A statistically significant difference was found between the Fatigue Severity Scale score and sex, education status, occupation, cohabitation, presence of complications, and hemoglobin A1c (P<0.05). Family support was significant only with respect to marital status, occupation, and being employed (P<0.05). ConclusionIt was seen at the end of this research that social support reduced the level of fatigue in a number of patients with type 2 diabetes. Nurses of diabetes patients should carry out fatigue assessments routinely and reflect these in nursing care plans by also associating them with the social support sources of the patient.
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