Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(115)
- Kaya, Yunus(50)
- Ayata, Ümit(48)
- Şahin, Engin(48)
- İspirli, Hümeyra(46)
- Bayraktar, Bülent(42)
- Şenay, Volkan(41)
- Can, Zehra(39)
- Özen, Soner(37)
- Bayram, Sinan(35)
- Pat, Suat(35)
- Öztürk, Mesut(35)
- Ecem Bayram, Nesrin(34)
- Esmer, Yusuf(34)
- Battal, Fetullah(33)
- Artar, Musa(32)
- Öner, Erdal(32)
- Korkmaz, Şadan(31)
- Yilmaz, Mustafa Tahsin(31)
- Ertugrul, Mehmet(30)
- Mercan, Emin(30)
- Hasar, Ugur Cem(29)
- Kutlu, Naciye(28)
- Özdemir, Akın(27)
- Kul, Murat(26)
- Cuce, Erdem(25)
- Kamiloğlu, Aybike(25)
- Bayram, Ozkan(24)
- Sefali, Abdurrahman(24)
- Sert, Durmuş(24)
- Çolak, Murat(24)
- Ayazoglu, Rabil(22)
- Gıdık, Betül(22)
- Maden, Sedat(22)
- Ustabulut, Mete Yusuf(22)
- Uçurum, Metin(22)
- Akeren, Zahide(21)
- Dirican, Ebubekir(21)
- Kara, Yakup(21)
- Abdioglu, Murat(20)
Yayınlar
- MakaleAçık Erişim2023Scopus SJRQ2Extraction of Functional Compounds from Tarragon (Artemisia dracunculus L.) by Deep Eutectic Solvents at Different Properties
Can Gerçek, Yusuf; Kutlu, Naciye; Çelik, Saffet; Gıdık, Betül; Bayram, Sinan; Bayram, Nesrin Ecem
In this study, it was aimed to examine the capacity of deep eutectic solvents (DESs) with different contents to extract bioactive compounds from tarragon (Artemisia dracunculus L.) plant. For this reason, the total phenolic-flavonoid content, total proanthocyanidin content and antioxidant/antimicrobial activities of the prepared DES extracts were investigated, as well as the individual phenolic and individual amino acid profiles. According to the results, DES10 had the highest efficiency in terms of its capacity to extract individual phenolics (approximately 59 mg/100 g) and individual amino acids (approximately 2500 mg/kg), and also gave a higher yield compared to ethanol (approximately 44 mg/100 g for individual phenolics and about 19810 mg/kg for individual amino acids) and methanol (approximately 58 mg/100 g for individual phenolics and approximately 21430 mg/kg for individual amino acids). However, the total phenolic content, total flavonoid content and antioxidant activity values of DES extracts were determined between 59.09–77.50 mg GAE/100 g, 28.68–45.55 mg GAE/100 g and 42.96–146.86 mg TE/100 g, respectively. Therefore, it can be recommended to use these green solvents, which are known as environmentally friendly, as an alternative to organic solvents in the process of preparing extracts of this important medicinal plant in different areas.
AtıfScopus8WoS6OpenAlex9
İncele - MakaleAçık Erişim2023Scopus SJRQ2Investigation of organic and inorganic matters removal from tannery wastewater using iron plate electrode by electrocoagulation process
Bingül, Züleyha; Irdemez, Şahset; Kul, Sinan; Ekmekyapar Torun, Fatma; Demircioğlu, Nuhi
In this study, COD, turbidity, total nitrogen, phosphate, sulphate, oil-grease and chromium removals from wastewaters taken from a local tannery using the electrocoagulation process were examined and the most suitable parameters for the electrocoagulation system were tried to be determined. Soluble iron plate electrodes were used as electrodes in the experiments. As a result of the studies carried out, the most suitable initial pH in uncontrolled pH was determined as pH = 4 and for controlled pH as pH = 5. In studies, the most suitable current density for iron electrodes was determined as 1.2 mA cm−2. Even if the increase in current density increased the amount of dissolved Fe, it negatively affected the removal efficiency. In addition, the turbidity of the wastewater was removed in 30 minutes, phosphate in 20 minutes and chromium in 15 minutes by 100%. During 60 minutes of operation, while 62.91% of TN, 87.8% of oil-grease were removed, sulphate was removed at the rate of 54.78%. In the studies, 1st and 2nd order kinetic equations for COD removal were examined and it was determined that removal kinetic is more suitable for 2nd order kinetics.
AtıfScopus7WoS4İncele - MakaleAçık Erişim2023Scopus SJRQ2Experimental study of adhesively bonded joints with dissimilar composite laminates under different loading rates and ambient temperatures
Erbayrak, Engin; Gumus, Beril Eker; Yuncuoglu, Ercument Ugur
An experimental study of the single-lap joints at different loading rates and ambient temperatures was investigated. In the experiment, a single lap joint was formed using plain woven glass fiber reinforced epoxy (GFRE) laminates, plain woven aramid fiber reinforced laminates (AFRE), and Araldite 138 M / HV998 epoxy adhesive. The composite laminates were produced using Vacuum-Assisted Resin Transfer Molding (VARTM) process. Adhesively bonded joints were created using similar and dissimilar adherends. Experiments were carried out under different loading rates (1 mm/min, 10 mm/min, 50 mm/min, 100 mm/min) and ambient temperatures (23°C,60°C,100°C). Stress–strain graphs were obtained for each experimental condition. It is seen that the maximum stress values increase as the loading rate increases in all single lap joints at all different temperatures. However, in all single lap joints, at all different loading rates, the maximum stress value decreases as the ambient temperature increases.
AtıfScopus7WoS7OpenAlex7İncele - MakaleAçık Erişim2023Scopus SJRQ3The effect of heart failure on gut microbial richness and diversity; [O efeito da insuficiência cardíaca estável na riqueza e diversidade microbiana intestinal]
Kilic, Oguz; Kaya, Halil Ibrahim; Secme, Mucahit; Kilinc, Mehmet; Sevgican, Cihan Ilyas; Buber, Ipek; Dodurga, Yavuz; Simsek, Omer; Ergin, Cagrı; Kilic, Ismail Dogu
Introduction and objective: With recent advances in genome sequencing technology, a large body of evidence has accumulated over the last few years linking alterations in microbiota with cardiovascular disease. In this study, we aimed to compare gut microbial composition using 16S ribosomal DNA (rDNA) sequencing techniques in patients with coronary artery disease (CAD) and stable heart failure (HF) with reduced ejection fraction and patients with CAD but with normal ejection fraction. We also studied the relationship between systemic inflammatory markers and microbial richness and diversity. Methods: A total of 40 patients (19 with HF and CAD, 21 with CAD but without HF) were included in the study. HF was defined as left ventricular ejection fraction <40%. Only stable ambulatory patients were included in the study. Gut microbiota were assessed from the participants’ fecal samples. The diversity and richness of microbial populations in each sample were assessed by the Chao1-estimated OTU number and the Shannon index. Results: The Chao1-estimated OTU number and Shannon index were similar between HF and control groups. There was no statistically significant relationship between inflammatory marker levels (tumor necrosis factor-alpha, interleukin 1-beta, endotoxin, C-reactive protein, galectin-3, interleukin 6, and lipopolysaccharide-binding protein) and microbial richness and diversity when analyzed at the phylum level. Conclusion: In the current study, compared to patients with CAD but without HF, stable HF patients with CAD did not show changes in gut microbial richness and diversity. At the genus level Enterococcus sp. was more commonly identified in HF patients, in addition to certain changes in species levels, including increased Lactobacillus letivazi.
AtıfScopus8OpenAlex7İncele - MakaleYalnız künye2023Scopus SJRQ1Full-scale structural evaluations of İskenderpaşa minaret
Aymelek, Abdullah; Yanik, Yusuf; Demirtaş, Betül; Yildirim, Ömer; Çalik, İsmet; Türker, Temel
Nowadays, innovative methods have been used for observing and structural evaluating of historical structures. In this paper, it is presented the full-scale structural assessments of a minaret after a Finite Element model calibrating according to vibration test results. Also, the structural behaviours under earthquake and wind loads were identified by considering the environmental effects on the selected masonry minaret of İskenderpaşa Mosque. First of all, modal analysis was executed on the three-dimensional Finite Element model created according to field survey in ANSYS Workbench. In-situ vibration tests were implemented at different intervals by using developed vibration measurement system. The experimental modal parameters were attained from collected signals. The experimental results were used as reference values in model calibration of this minaret to reflect the existing structural behaviour. Model calibration process was carried out on the initial model both by changing of material properties of masonry wall and by taking into account the interactions with mosque walls and ground. Full-scale structural evaluation was carried out under earthquake and wind loads on both the initial and the calibrated models in the weak direction of this minaret. The top displacements, drift ratios, principal stress values and their distributions were determined. It was shown that the analyses on the calibrated model produce more realistic structural behaviour.
AtıfScopus21WoS20OpenAlex22İncele - MakaleAçık Erişim2023Scopus SJRQ3A study on Li-ion battery and supercapacitor design for hybrid energy storage systems
Çorapsiz, Muhammed Reşit; Kahveci, Hakan
This paper discusses a generic design of lithium-ion (Li-ion) batteries and supercapacitors, which are important sources for energy storage systems (ESS). The main contribution of this study is to compare the available and experimental models for batteries and supercapacitors operating under continuous charge or discharge conditions. Even though the available models show similar behavior to the experimental ones in short-term or pulsed discharge conditions, this situation may be different in continuous discharge conditions. For this purpose, the optimal electrical equivalent circuits of energy storage devices were constituted and modeled in the MATLAB/Simulink environment. Then, the electrical equivalent circuit parameters were approximately calculated with the help of dynamic equations. Finally, the model parameters were estimated using Nonlinear Least Squares Method (NLSM) and Trust Region Reflective Algorithm (TRRA). When the obtained results were evaluated together, it has been observed that the electrical equivalent circuit models (EECM) more accurately reveal the transient and steady states of energy storage devices compared to the available models, especially under continuous discharge conditions.
AtıfScopus33WoS30OpenAlex33İncele - MakaleYalnız künye2023Scopus SJRQ1Genetic algorithm enabled virtual multicast tree embedding in Software-Defined Networks
Guler, Evrim; Karakus, Murat; Ayaz, Furkan
The recent network virtualization technology enables the multi-tenancy, where various virtual network requests can share the same physical network by decoupling network services from the underlying hardware architecture. The process of virtual node and link mapping onto a shared Substrate Network (SN) by satisfying the requested network resources (i.e., bandwidth, computing capacity, etc.) is referred to as Virtual Network Embedding (VNE), which is known as an NP-Hard problem. The problem of VNE aims to exhibit one-to-one (unicast) communication. However, the motivation of this research is to explore how to efficiently map virtual networks with one-to-many (multicast) communications, which are in the form of Virtual Multicast Trees (VMTs), onto an SN. This problem differs from the traditional VNE problem and has not been well-studied by the research community. To this end, we propose a novel algorithm, Modified Genetic Algorithm for Virtual Multicast Tree Embedding (MGA-VMTE), to embed VMTs onto a shared SN in this research. The proposed MGA-VMTE algorithm focuses on minimizing the network resource consumption (i.e., bandwidth) under end-to-end delay constraint in the SN while satisfying the computing request of virtual nodes. Our extensive simulations demonstrate that the MGA-VMTE algorithm outperforms the dynamic impact factor and traditional greedy-based virtual multicast tree embedding approaches regarding bandwidth consumption, acceptance ratio, and resource depletion ratio metrics on NSFNET, USNET, Random-60 node, and Random-120 node network topologies.
AtıfScopus16WoS12OpenAlex16İncele - MakaleAçık Erişim2023Scopus SJRQ2The effect of guided imagery on postoperative pain and comfort of geriatric orthopaedic patients: a randomized controlled trial
Ozdemir, Ahmet; Gunes, Hüseyin; Saritas, Serdar
Background: The purpose of this study is to investigate the effects of guided imagery on postoperative pain and comfort in geriatric orthopedics patients. Methods: This study was carried out with a randomized-controlled true experimental design. The population of the study included geriatric patients receiving treatment at the orthopedics and traumatology inpatient clinic of a university hospital. Based on random selection, the sample consisted of total of 102 patients, including 40 patients in the experimental group and 40 in the control group. The data were collected using a Personal Information Form, the Visual Analog Scale, and the General Comfort Questionnaire. Results: After the guided imagery intervention, the pain levels of the experimental group significantly decreased compared to their baseline pain levels (t = 4.002, P = 0.00). Their perceived comfort was also significantly improved (t = −5.428, P = 0.00). Although the perceived comfort of the control group decreased, this decrease was not statistically significant (t = 0.698, P = 0.489). Conclusion: It is recommended that guided imagery, which is an inexpensive and accessible method, be integrated into the nursing care process to reduce the pain and increase the comfort of geriatric orthopedics patients.
AtıfScopus3WoS1OpenAlex4İncele - MakaleYalnız künye2023Scopus SJRQ1Electrical, Magnetic, Microstructural, and Characteristic Properties of Zirconium-Substituted Co0.5 Ni0.5 Zrx Fe2− x O4 Spinel Ferrite Nanostructures
Teber, Ahmet; Sarac, Mehmet F.
The effect of zirconium (Zr) substitution in nickel–cobalt ferrites, Co0.5Ni0.5ZrxFe2−xO4 (0.0 ≤ x ≤ 1.0) produced by the hydrothermal method on the electrical, magnetic, microstructural and characteristic properties are reported. A secondary phase as tetragonal-ZrO2 phase in the crystal system is detected and have both M-type hexagonal and tetragonal nanocrystallites between 32 and 67 nm. Refined structural parameters using Rietveld analysis are carried out, resulting in lattice parameters, the unit cell volume, parameter ratios, and the crystallite size using the TOPAS refinement program. In addition, residuals for the RBragg factor and goodness of fit (χ2) value for each concentration are represented. The Rietveld analysis determines that the predicted and actual diffraction patterns are in accord. Furthermore, the Zr effect is presented in unit volume as seen by the drop in peak intensity that occurs (with the addition of Zr) due to the lattice tension. Moreover, the morphological analyses indicate that the shape transformed from agglomerated clusters to oval-shaped structures and a reduction in grain size. Fourier transform infrared (FT-IR) analysis in the range of 4000–450 cm−1 correlates with the presence of the hexagonal spinel ferrite structure. The dielectric parameters, such as the relative permittivity, tangent loss, and ac conductivity, are experimentally measured with the oscillation voltage level of 0.05 V in the frequency range of 0.1–10 MHz. The dielectric permittivities and tangent losses of the specimens decreased with an increment in frequency. Magnetic measurements reveal that the values of coercivity (Hc) have the propensity to increase relating to the zirconium concentration.
AtıfScopus2WoS3OpenAlex4İncele - MakaleAçık Erişim2023Scopus SJRQ3Exploring Turkish parents’ lived experiences on online science lessons of their children with mild intellectual disability amid the COVID-19 pandemic
Yarımkaya, Derya; Töman, Ufuk
Background: The purpose of this qualitative study was to explore Turkish parents’ lived experiences on online science lessons of their children with mild intellectual disability amid COVID-19 pandemic. Method: This study used the phenomenological qualitative research design. Participants in this study were 16 parents, who have children with mild intellectual disability and participated in one-on-one semi-structured phone calls. Interview data were thematically analyzed. Result: Five overarching themes were found: (1) parents’ general experiences on online science lessons, (2) advantages of online science lessons, (3) disadvantages of online science lessons, (4) barriers in online science lessons, and (5) parents’ recommendations for online science lessons. Conclusion: The results revealed that the majority of parents agreed on the school closure policy due to the COVID-19 pandemic, but were not satisfied with the online science lessons, and focused on the disadvantages of online science lessons for their children with mild intellectual disability.
AtıfScopus6WoS10OpenAlex14İncele - MakaleYalnız künye2023Scopus SJRQ1Brain MRI high resolution image creation and segmentation with the new GAN method
Altun Güven, Sara; Talu, Muhammed Fatih
Brain magnetic resonance imaging segmentation is a recent and still popular research area. Good and accurate segmentation results play an important role in the diagnosis of cancer or other brain diseases. In this article, a novel Generative Adversarial Network architecture is proposed for brain magnetic resonance imaging segmentation. The proposed method is called SSimDCL (Supervised SimDCL). Four studies were conducted in this article. In the first study, the SSimDCL method on the two-dimensional brain magnetic resonance imaging dataset was compared with the current state-of-art architectures CycleGAN, CUT, FastCUT, DCLGAN, and SimDCL. In the second study, the dataset resolution was improved. In the third study, being measured the efficiency of the newly created dataset. And the SSimDCL is trained for both the dataset with increased resolution and the normal dataset, and the results are obtained. In the fourth study, the results of the SSimDCL and the VolBrain brain magnetic resonance imaging segmentation results, which are widely used today, are included. When VolBrain segmentation and SSimDCL segmentation are compared. The results were compared both visually and metrically. Fréchet Inception Distance (FID), Kernel Inception Distance (KID), Peak Signal to Noise Ratio (PSNR) and Learned Perceptual Image Patch Similarity (LPIPS) were used as measurement metrics. The Jaccard and Dice similarity metrics were also used in the analysis. It was observed that the SSimDCL give satisfactory results in all four studies. This method can be used as an automatic brain MRI image segmentation system.
AtıfScopus42WoS31OpenAlex42İncele - MakaleYayıncıda açık erişim2023Scopus SJRQ1Impact of high-pressure homogenisation of milk on physicochemical, microbiological, and textural characteristics of sheep milk yoghurt
Sert, Durmuş; Mercan, Emin; Tanrıkulu, Mehmet
Yoghurt samples were produced from sheep milk that was high-pressure homogenisation (HPH) treated at 0 (control), 30, 50, 70 and 100 MPa. Depending on the acidification kinetic parameters, HPH treatment increased the acidification rate and shortened the fermentation time. HPH-treated samples had lower pH, increased water holding capacity, decreased syneresis, decreased particle size and higher acetaldehyde content than the control. At 0 and 14 days of storage, the tyrosine value of HPH-treated samples was higher than the control. Although HPH resulted in higher L∗ and a∗ values, it caused lower b∗ values in yoghurt samples. Up to 30 MPa, HPH increased firmness and consistency; however, these were decreased above 50 MPa. During storage, Streptococcus thermophilus and Lactobacillus bulgaricus counts ranged from 6.12 to 8.20 log cfu g−1 and 5.70 to 8.96 log cfu g−1, respectively. Depending on the increasing pressure, HPH caused higher S. thermophilus and L. bulgaricus counts.
AtıfScopus8WoS5OpenAlex10İncele - MakaleAçık Erişim2023Scopus SJRQ1The effect of waste material generated during paper production on the rheological and structural features of asphalt binder
Yilmaz, Bahadir; Ugurlu, Nuray
In this study, the performance properties of magnesium lignosulfonate, an organic waste material produced during paper production from wood, on asphalt binder were investigated. The modification was carried out by adding magnesium lignosulfonate (MLS) at 2%, 4%, 6%, and 8% by weight to the asphalt with B50/70 penetration grade. The morphological structure, modification mechanism, and thermal decomposition temperatures of the modified asphalt binders formed by adding the MLS to the asphalt were determined by a Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and Thermogravimetry-Differential Thermal Analysis (TG/DTG), respectively. The physical and rheological properties of the material were determined by penetration, softening point, Rolling Thin Film Oven Test (RTFOT), Dynamic Shear Rheometer (DSR), and Rotational Viscometer (RV) experiments conducted in a laboratory. The experimental results showed that the organic-based waste additive increases the asphalt consistency, rutting, and short-term aging resistance, and decreases the temperature sensitivity.
AtıfScopus6WoS7OpenAlex7İncele - MakaleYalnız künye2023Scopus SJRQ2Prediction of gamma ray spectrum for 22Na source by feed forward back propagation ANN model
Teke, Cagatay; Akkurt, Iskender; Arslankaya, Seher; Ekmekci, Ismail; Gunoglu, Kadir
The radiation has been used in a variety of different fields since its discovery and thus its measurement becomes vital in these industries. Different type detector may be used to measure gamma rays depends on the purposes of measurements. Gamma ray energy spectrum is an important to determine either elemental analysing of a sample or radiation shielding purposes. On the other hand, Artificial Neural Network (ANN) may be used to predict and analysing of gamma-ray spectrum. In this study, gamma ray spectrum from 22Na source detected in NaI (Tl) detector was estimated by ANN. There have been installed ten different ANN models to find the network structure that produces the best predictive value for the gamma ray spectrum NaI (Tl) Detector. Estimation study has been continued with the ANN model with be possessed of lowest error value. ANN model was created by using energy, distance and gamma-rays energy spectrum (called Io) values. In the ANN model developed using the feed forward back propagation algorithm, were used artificial neurons two in the input layer, ten in the hidden layer and one in the output layer. For the case of present work, the experimental data was used 70% for education, 20% for validation and 10% for testing. The estimated values obtained with the ANN model were compared with the experimental results and a good correlation has been found between them (R2 = 0.99).
AtıfScopus18WoS9OpenAlex27İncele - MakaleYalnız künye2023Scopus SJRQ2THE EFFECTS OF STRATEGY TRAINING ON THE USE OF GLOBAL READING STRATEGIES: IMPLICATIONS FROM THINK-ALOUD AND EYE-TRACKING DATA
Bilici, Ozlem Utku; Subasi, Gonca; Dolgunsoz, Emrah
Considering the critical role of readings strategies in L2 reading this study aimed to investigate the impact of strategy training on Turkish EFL learners’ use of global reading strategies. 23 freshmen, enrolled in the ELT Department, participated in the study, and the data were collected through eye tracking and think-aloud protocols. The results are encouraging for the use of reciprocal teaching, one of the comprehension-enhancing approaches to teach reading, in the EFL contexts. Eye tracking results, hand in hand with the think-aloud protocols’ findings, revealed that the participants utilised global reading strategies more frequently to a statistically significant degree after the strategy instruction. Thus, it was concluded that strategy training was useful for the participants to improve their use of global reading strategies, and a recent technological tool can be purposefully integrated into the data collection procedure of educational research studies. Pedagogical implications on the strategy training for the employment of global reading strategies that would help students improve reading skills need to be given attention by teachers.
AtıfScopus2İncele - MakaleAçık Erişim2023Scopus SJRQ3Correlation Between K-value, Density Index and Bifilm Index in Determination of Liquid Al Cleanliness
Tigli, A.; Tokatli, M.; Uslu, E.; Colak, M.; Dispinar, D.
Aluminum alloys are widely used in the industry thanks to its many advantages such as light weight and high strength. The use of this material in the market is increasing day by day with the developing technology. Due to the high energy inputs in the primary production, the use of secondary ingots by recycling from scrap material are more advantageous. However, the liquid metal quality is quite important in the use of secondary aluminum. It is believed that the quality of recycled aluminum is low, for this purpose, many liquid metal cleaning methods and test methods are used in the industry to assess the melt cleanliness level. In this study, it is aimed to examine the liquid metal quality in castings with varying temperature using K mold. A206 alloy was used, and the test parameters were selected as: (i) at 725 °C, 750 °C and 775 °C casting temperatures, (ii) different hydrogen levels. The hydrogen level was adjusted as low, medium and high with degassing, as-cast, and upgassing of the melt, respectively. The liquid metal quality of the cast samples was examined by the K mold technique. When the results were examined, it was determined that metal K values and the number of inclusions were high at the as-cast and up-gas liquid with increasing casting temperatures. It has been understood that the K mold technique is a practical method for the determination of liquid metal quality, if there is no reduced pressure test machine available at the foundry floor.
AtıfScopus7WoS6OpenAlex7İncele - MakaleYalnız künye2023Scopus SJRQ1Novel PV Array Reconfiguration and Integration with a Maximum Power Point Tracking Algorithm: RMPPT
Güngör, Okan; Kahveci, Hakan
Partial shading significantly impacts the output power of photovoltaic (PV) arrays. This issue can be addressed by reconfiguring connections or positions of modules within the PV array. However, reconfiguration approaches present some drawbacks including the requirements of manual effort, complex algorithms, difficulty in implementation, and switching matrices that increase power losses. To overcome these issues, we present a low-cost and easily implemented reconfiguration method with integration into a maximum power point tracking (MPPT) algorithm for a PV array. We denote our MPPT approach as reconfigurable MPPT (RMPPT), and verify its applicability using a particle swarm optimization (PSO) algorithm, namely the reconfigurable PSO. Consequently, this approach has enhanced the output power of the PV array by at least 7.2% compared to PNO (perturb and observe) and PSO-based MPPT under realistic weather conditions.
AtıfScopus6WoS5OpenAlex5İncele - MakaleAçık Erişim2023Pain, Sleep Disturbance, and Smoking Among Patients with Coronavirus Disease Admit to The Emergency Department
İlgin, Vesile Eskici; Yayla, Ayşegül; Özlü, Zeynep Karaman; Özlü, İbrahim; Toraman, Rümeysa Lale; Toraman, Muazzez Merve
AIM: The study aimed to determine the pain, sleep disturbance, and smoking among patients with coronavirus disease 2019 who were presented to emergency departments. METHOD: This descriptive research was conducted between November 2020 and December 2021. The study population comprised 400 patients with coronavirus disease 2019 who were presented to emergency departments at Ataturk University Research Hospital and Erzurum City Hospital and who agreed to participate in the study. The data were collected by the researcher via face-to-face interviews. Personal Information Form, Fagerström Test for Nicotine Dependence, Insomnia Severity Index, and McGill Pain Scale Short Form were used to collect the data. Descriptive statistics were presented as number, percentage, mean, and standard deviation. Parametric and nonparametric methods (t-test, Kruskal–Wallis Variance, Mann–Whitney U test, and analysis of variance were used to compare variables between the groups. Ethical approval was obtained from the relevant authority prior to data collection and oral consent was obtained from all patients. RESULTS: It was determined that 52.5% of the patients were smokers; 24% of the smokers reported a decrease in smoking after being diagnosed with coronavirus disease 2019. Nicotine addiction was found to be higher in men, tradesmen, and patients aged 55–64 years. McGill pain scale emotional sub-dimension scores were higher in women, whereas the sensory sub-dimension scores were higher in married patients. McGill pain scale total scores were higher in women, unemployed patients, and those with chronic diseases. The Insomnia Severity Index was higher in women, smokers, and patients in the age group of 65–75 years. CONCLUSION: According to the results of the present study, pain, smoking, and sleep disorders in patients diagnosed with coronavirus disease 2019 were affected by sociodemographic characteristics.
AtıfScopus2WoS2OpenAlex2İncele - MakaleAçık Erişim2023Scopus SJRQ2The contact problem of a functionally graded layer under the effect of gravity
Adiyaman, Gokhan; Oner, Erdal; Yaylaci, Murat; Birinci, Ahmet
This paper considers the continuous and discontinuous contact problems of a functionally graded (FG) layer under the effect of gravity. A finite distributed load is applied to the beam from the top and the beam is placed to the top of a rigid foundation. It is assumed that the shear modulus and mass density of the beam vary exponentially whereas Poisson's ratio remains constant. The problem is solved for both continuous and discontinuous cases. In each case, the governing equations and boundary conditions of the problem are reduced to an integral equation by the help of Fourier integral transform. In the continuous contact, the integral equation solved analytically and critical load that causes initial separation between the layer and the rigid foundation, separation distance and contact pressures are investigated for various non-homogeneity parameters that presents the change in the shear modulus and density and loadings. The singular integral equation in case of discontinuous contact is numerically solved by using corresponding Gauss–Chebyshev quadrature and an iterative scheme. The effect of non-homogeneity parameters and loading on the separation distance between the layer and the foundation and contact pressures are analyzed. All the results are shown in tables and figures. It is seen that increasing stiffness and decreasing density at the top of the layer reduce maximum pressures but increase separation distances. This study aims to fill the deficiency in the mechanical behavior of the coatings under gravity.
AtıfScopus19WoS20OpenAlex17İncele - MakaleAçık Erişim2023Scopus SJRQ2The mediating role of time attitude in the relationship between self-esteem and resilience in high school students
Çelik, Eyüp; Süler, Melek; Söylemez, Aydın; Koçak, Lokman
The aim of this research was to investigate the mediating role of time attitudes in the relationship between self-esteem and resilience in high school students. High school students’ self-esteem, time attitude, and resilience have been researched comparatively. The research was carried out with a quantitative research design and survey method. Participants, who were selected using a convenience sampling method, were high school students. The 1,932 participants consisted of students in the following grade distribution: 793 ninth grade (248 male, 545 female); 365 tenth grade (78 male, 257 female); 350 eleventh grade (90 male, 260 female); and 434 twelfth grade (130 male, 324 female). Participants were selected from secondary education institutions in Sakarya and Kocaeli during COVID-19 from January to May 2021. Data were collected using tools such as the Two Factored Self-Esteem Scale, Adolescent Time Attitude Scale, and Ego Resilience Scale. The data was analyzed with correlation analysis and regression-based mediation analysis to investigate the relationship between self-esteem, time attitude and resilience. The SPSS 22 package program was used to analyze the data. After analyzing the data, it has been concluded that the time attitude in adolescents indeed has a mediating role in the relationship between self-esteem and resilience. The results of the research will make important contributions to the related literature.
AtıfScopus5OpenAlex3İncele