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Öğretmenlerin okullarındaki kültür ve performanslarına yönelik algıları arasındaki ilişki
No full textBu araştırmada öğretmenlerin okul kültürü algılarıyla performanslarına yönelik algıları arasında ilişkinin ortaya çıkarılması amaçlanmıştır. İlişkisel tarama modelinde yapılan araştırmanın verileri meslek liselerinde çalışan 347 öğretmenden toplanmıştır. Araştırmada öğretmenlerin okul kültürü algılarıyla ilgili en yüksek ortalama öğrenci-öğretmen/okul ilişkileri boyutunda ve yüksek düzeyde iken öğrenci ilişkileri, eğitsel fırsatlar boyutları ve genel ortalama ise orta düzeydedir. En düşük ortalama davranışsal beklentiler boyutunda ve düşük düzeyde tespit edilmiştir. Öğretmenlerin performanslarına yönelik algı düzeyleri yüksek düzeyde ölçülmüştür. Öğretmenlerin okul kültürü algıları kariyer basamaklarına göre farklılık göstermez iken cinsiyet, yaş, eğitim düzeyi ve mesleki kıdeme göre anlamlı farklılık göstermiştir. Öğretmenlerin okul kültürü algılarının cinsiyetlerine göre davranışsal beklenti, eğitsel fırsat ve genel okul kültüründe erkek öğretmenlerin ortalamalarının kadın öğretmenlerden daha yüksek olduğu görülmüştür. Öğretmenlerin okul kültürü algılarının yaş değişkenine göre davranışsal beklentiler boyutunda ve genel okul kültüründe 51 yaş ve üstündeki öğretmenler lehine yüksek olduğu görülmüştür. Lisans mezunu öğretmenlerin öğrenci-öğretmen/okul ilişkileri algıları lisansüstü mezunu öğretmenlerden daha yüksek çıkmıştır. 26 yıl ve üstü kıdeme sahip öğretmenlerin davranışsal beklentiler boyutu ve genel okul kültürü algılarının mesleki kıdemi az olanlara göre daha yüksek olduğu saptanmıştır. Öğretmenlerin performanslarına yönelik algılarının kişisel değişkenlere göre farklılık göstermediği ve benzer olduğu görülmüştür. Öğretmenlerin okul kültürü algıları ile performanslarına yönelik algıları arasında pozitif yönlü ve orta düzeyli ilişki olduğu görülmüştür
Solutions of the Fractional Differential Equations Including Caputo-Fabrizio, Caputo, and Integer Order Derivatives Via Smv Polynomials
No full textFractional linear and nonlinear differential equations with the Caputo-Fabrizio, Caputo, and integer order derivatives are considered in this paper. An approximate solution of the problem is written as a truncated series of the shifted Morgan-Voyce (SMV) polynomials with unknown coefficients. Our goal is to compute the numerical values of the unknown coefficients. First, the Caputo-Fabrizio, Caputo, and integer order derivatives of the approximate solution expressed in terms of SMV polynomials are presented in the form of the matrix relations. The main advantage of these matrix relations is that they convert the differential equation, including three different types of derivatives, into a system of algebraic equations, which allows us to easily transfer the problem into computer programming. Furthermore, the convergence of the method is investigated in the Sobolev space. Finally, the application of the method is presented by using numerical examples. In the numerical examples, figures and tables are used to discuss the effect of different values of fractional order on the solution and to show the accuracy of the method by comparing it with existing numerical solutions
Electron Paramagnetic Resonance Analysis of Gamma Irradiation Damage Centers in Erycorbin Single Crystal
No full textThe paramagnetic structure formed as a result of gamma irradiation in erycorbin single crystals was investigated using the Electron Paramagnetic Resonance (EPR) Spectroscopy method. It was observed that the structures of the Electron Paramagnetic Resonance spectra did not show any change at different temperature values. The structural disorder showed itself as two paramagnetic centers. Spectroscopic splitting factors, hyperfine structure constants and direction cosines of the paramagnetic centers were calculated. Simulation study was also performed to support the accuracy of the experimental spectra.BAP of Pamukkale University [2012FBE038]This work was supported by the BAP of Pamukkale University [grant number 2012FBE038]
Deneysel Diyabet Modelinde Probiyotiklerin Böbrek Dokusuna Etkisi
No full textPurpose: Diabetes, a major public health issue, is an endocrine and metabolic disease that causes damage to various tissues, including the kidneys. Probiotics are thought to play a beneficial role in the prevention and treatment of diseases when used in sufficient amounts. This study aims to investigate the effects of probiotic supplementation on kidney tissue damage induced by diabetes. Materials and methods: A total of 34 rats were divided into five groups. The control group (K, n=5) received PBS, while the probiotic-only group (Pm, n=5) was given probiotics (0.6 mg/kg). In the diabetes group (Dm, n=8), diabetes was induced using streptozotocin (50 mg/kg). The PmD group (n=8) received probiotic supplementation before diabetes induction, and probiotic administration continued after diabetes was induced. In contrast, the DmP group (n=8) first underwent diabetes induction, followed by probiotic supplementation. Kidney tissues were examined histopathologically and immunohistochemically, with Bcl-2 and alpha-SMA antibody expressions evaluated. Results: No histopathological alterations were observed in the control group. In the Dm group, moderate-to-mild nephrotoxicity was detected, while the probiotic-supplemented diabetes groups exhibited mild nephrotoxicity. Bcl-2 expression was decreased in the Dm group but was found to be higher in the DmP and PmD groups. Conversely, alpha-SMA expression was elevated in the Dm group, whereas it was lower in the DmP and PmD groups. Conclusion: Histopathological and immunohistochemical analyses indicate that probiotics exert a protective effect against diabetes-induced kidney damage. © 2025, Pamukkale University. All rights reserved.Pamukkale University Scientific Research Projects Coordination Office; Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi, BAP, (2021SABE018); Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi, BA
The Effect of Telehealth Based on Symptom Control and Rational Medication Use on Self-Efficacy, Anxiety-Depression, and Symptoms in Male Patients With Copd: a Quasi-Experimental Study
No full textTakmak, Senay/0000-0002-0338-4156Introduction. Chronic obstructive pulmonary disease (COPD) is a critical global public health issue, imposing substantial physical, social, and economic burdens due to its symptoms and exacerbations. Telehealth has the potential to be applied for symptom management, monitoring medication adherence, and providing psychological support. This study was carried out to determine the effect of telehealth based on symptom control and rational medication use on self-efficacy, anxiety-depression, symptoms, walking, and healthcare use outcomes in male patients with COPD. Methods. A quasi-experimental design was used. The study examined 41 patients with COPD (the intervention group = 20, the control group = 21) treated at the Department of Chest Diseases, Buldan Chest Diseases State Hospital, Denizli, T ; uuml;rkiye. Data were collected at baseline and three months post-intervention using the COPD Self-Efficacy Scale, the COPD Assessment Test, the Hospital Anxiety Depression Scale, and the Six-Minute Walk Test. All participants received routine care. The patients in the intervention group were provided with a nurse-led program and telehealth for three months. Results. A comparison of the baseline data for the two groups revealed a statistically significant difference in the incidence of respiratory hospitalizations (p = 0.009). Analysis of covariance adjusted for baseline results revealed statistically significant differences for the weather/environmental effect (p = 0.011) and behavioral risk factors subscales (p = 0.017) of the COPD Self-Efficacy Scale, as well as dyspnea score after the Six-Minute Walk Test (p = 0.034) in the intervention group compared to the control group. No significant differences were observed between the groups in anxiety-depression, symptoms, and healthcare use (p > 0.05). Conclusions. This study demonstrated that telehealth based on symptom control and rational medication use significantly affected post-walking dyspnea and partially improved COPD self-efficacy in male patients with COPD. Incorporating teamwork and device-based monitoring is recommended to enhance the effectiveness of telehealth interventions based on education and monitoring.Pamukkale University Scien-tific Research Projects Coordination Unit [2018SABE015]This study was supported by Pamukkale University Scien-tific Research Projects Coordination Unit through project number 2018SABE015
8:16 Time Restricted Feeding and 5:2 Intermittent Fasting Exert Beneficial Metabolic Effects on Lipid Profile and Endoplasmic Reticulum Stress in High Fructose-Consuming Rats
No full textWe aimed to investigate and compare the effects of two different frequently utilized intermittent fasting (IF) protocols (8:16 and 5:2) applied for eight weeks on weight loss, metabolic indices, serum/liver sterol regulatory protein (SREBP) levels, and endoplasmic reticulum stress (ERS) markers in normal and high-fructose (HF) fed rats. Sixty male, Wistar rats were divided into six groups (n = 60): Control(C), 8:16 (8 h ad libitum and 16 h fasting), 5:2 (2 days food restriction followed by 5 days ad libitum-feeding), HF (high-fructose, 20% drinking water, eight weeks), 8:16 + HF, 5:2 + HF groups. IF protocols were applied for eight weeks. Serum and liver SREBP-1c, SREBP-2, acetyl-CoA carboxylase (ACC), fatty acid synthase (FAS), cholesterol, triglyceride (TG), and serum protein kinase RNA-like endoplasmic reticulum kinase (PERK), protein glucose-regulated protein 78 (GRP78), and X-box binding protein 1 (XBP1) levels were determined by commercial kits. The body weight (BW) and visceral fat lowering effects of 5:2 diet was more prominent compared to 8:16 TRF. Both IF protocols decreased serum SREBP-2, ACC, TG, cholesterol levels (p 0.05). HF induced weight gain and increment in serum glucose which was reversed by 8:16 IF. The weight loss effect of 5:2 IF was also more prominent in HF. Serum and liver SREBP-1c, SREBP-2, cholesterol, TG levels were higher in HF group than C (p 0.05). Both IF regimens decreased serum and liver SREBP-1, SREBP-2, ACC, TG, cholestreol levels in rats subjected to HF diet (p 0.05). Although IF regimens did not cause ERS; they reversed elevated ERS induced by HF diet. Both IF protocols have beneficial effects on both normal and HF consuming rats, being superior to each other on several parameters.Pamukkale University Scientific Research Projects Coordination Unit; [2021HZDP011]This study was supported by Pamukkale University Scientific Research Projects Coordination Unit (grant number 2021HZDP011)
Sustainable Production of Microcrystalline and Nanocrystalline Cellulose From Textile Waste Using Hcl and Naoh/Urea Treatment
No full textBio-nanomaterials are gaining increasing attention due to their renewable and eco-friendly characteristics. Among these, nanocrystalline cellulose (NCC) stands out as one of the most advanced materials for applications in food, healthcare, composite production, and beyond. In this study, NCC was successfully extracted from cotton-based textile waste using a combination of chemical and mechanical methods. The cellulose fibers were first hydrolyzed using a dilute HCl solution, neutralized, and then dried, resulting in microcrystalline cellulose (MCC) with diameters ranging from 7 to 15 mu m and lengths up to 300 mu m (as observed via optical microscopy and scanning electron microscopy, SEM). To achieve nanoscale dimensions, NaOH/urea solution with mechanical treatment was applied, resulting in the successful extraction of NCC in the supernatant, particularly under room-temperature conditions. Dynamic light scattering (DLS) analysis confirmed the presence of nanostructures (average sizes ranging from 120 nm to 750 nm), and atomic force microscopy (AFM) analysis verified the nanoscale range (diameters between 2 and 4 nm and lengths from 200 nm to 1 mu m). Fourier transform infrared (FTIR) spectroscopy revealed the conversion of cellulose I to cellulose II, confirming the successful transformation into NCC. For the first time, NCC was obtained from undyed cotton textile wastes using NaOH/urea treatment after HCl hydrolysis, eliminating the need for pre-treatment and intermediate steps.TUBITAK-2219 International Postdoctoral Research Fellowship Program [1059B192300439, TUBITAK-2219]; International Postdoctoral Research Fellowship ProgramThis study was carried out within the scope of the study titled "Investigation of Mechanical and Thermal Properties of PLA Matrix Biocomposites Reinforced with Micro and Nanocrystalline Cellulose Obtained from Waste Textile Products-1059B192300439" funded by the TUBITAK-2219 International Postdoctoral Research Fellowship Program
Knowledge, Awareness and Attitudes Among a Group of Turkish Dental Students Regarding Molar Incisor Hypomineralization: a Cross-Sectional Study
No full textBackgroundMolar incisor hypomineralization (MIH) is estimated to affect more than 800 million people worldwide. The clinical management of MIH can be challenging. For dentists, to provide effective and high-quality dental care to people affected by MIH, it is essential that they improve their awareness, ability to describe the clinical situation, and knowledge of treatment modalities. Previous surveys conducted with students showed that only a limited number are confident in diagnosing MIH. The aim of the study was to assess the clinical knowledge and perceptions of 4th- and 5th-year dental students regarding the distribution, severity, etiology and treatment modalities of MIH.MethodsIn this cross-sectional study, a total of 194 students studying in the 4th- (85 students) and 5th- (109 students) years participated in the survey. The survey had 23 questions and two sections, the first of which was intended to gather demographic information about the students. The second part consisted of questions about the diagnosis, etiology, and treatment of MIH. The independent t test and the chi-square test was used to compare qualitative data.ResultsThe majority of students (78.87%) stated that they had known about MIH. 5th-year students had known about MIH at a statistically significantly higher rate compared to 4th-year students (p = 0.0001). While only 19.69% of the participants stated that they could diagnose a patient with MIH, the proportion of 5th-year students who could make such a diagnosis was statistically significantly higher (p = 0.0001). The majority of the participants (96.39%) stated that they wanted MIH-related practices to be included more in their clinical education. The most desired topic to be included was diagnosis (91.98%).ConclusionsThe current study showed that students have some knowledge about MIH, but this knowledge is not sufficient, especially in terms of diagnosis and treatment. The students clearly wanted to develop their knowledge of MIH both theoretically and practically
Can Cognitive İmpairment Be Observed İndependently Of Neurological Symptoms İn Behçet's Disease?;
No full textPurpose: Behçet's disease (BD) is a chronic, multisystem inflammatory disorder that causes mortality and morbidity. Despite data indicating cognitive impairment in patients without neurological involvement, there is currently no consensus on how to screen patients. The Montreal Cognitive Assessment (MOCA) is a practical, easy-to-use screening scale that can detect mild cognitive impairment. We aimed to detect cognitive dysfunction with MOCA in BD without neurological findings. Materials and methods: This prospective study included patients diagnosed with BD without neurological findings, and healthy individuals matched for age, gender, and education. Behçet's Disease Current Activity Form (BDCAF) was applied to determine disease activity, and MOCA was applied to all participants. Results: The total score of the MOCA scale was significantly lower in Behçet's patients than in the control group (p=0.001). While no difference was found between BD and controls in terms of MOCA subtests ‘‘Orientation’’ and ‘‘Abstraction’’ (p=0.667, p=0.077, respectively), scores in other subtests were significantly lower in patients. A negative correlation was found between BDCAF scores and total MOCA scores (r=-0.454, p=0.000). A positive correlation was found between total MOCA score and years of education (r=0.345, p=0.000). Conclusion: In BD, a decrease in cognitive functions may exist without neurological involvement. Cognitive screening of patients with BD is crucial for detecting subclinical inflammation and improving quality of life. Our results demonstrate that the MOCA is an effective tool for detecting cognitive function decline. However, further large-scale, multi-center studies are needed to establish its routine use. © 2025, Pamukkale University. All rights reserved
Exploring the Hidden Symmetry of Quaternions: Dual Balancing and Cobalancing Numbers and Their Corresponding Quaternions
No full textThis paper unveils the hidden symmetry of quaternions through the introduction of Dual Balancing and Dual Cobalancing numbers, along with their corresponding quaternions. We provide Binet's formulas, generating functions, and a multitude of intriguing properties to foster a comprehensive understanding of these concepts. Furthermore, we present matrix representations to offer a fresh perspective on the Dual Balancing and Dual Cobalancing quaternions. The implications of this study go beyond theoretical applications and may have practical implications in diverse fields