Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(114)
- Kaya, Yunus(48)
- Şahin, Engin(48)
- İspirli, Hümeyra(47)
- Özen, Soner(38)
- Şenay, Volkan(37)
- Pat, Suat(36)
- Kutlu, Naciye(32)
- Artar, Musa(31)
- Can, Zehra(31)
- Korkmaz, Şadan(31)
- Yilmaz, Mustafa Tahsin(31)
- Öner, Erdal(31)
- Bayram, Sinan(30)
- Cuce, Erdem(30)
- Ertugrul, Mehmet(29)
- Hasar, Ugur Cem(29)
- Ecem Bayram, Nesrin(28)
- Mercan, Emin(28)
- Ayata, Ümit(27)
- Bayraktar, Bülent(27)
- Çolak, Murat(23)
- Özdemir, Akın(23)
- Ayazoglu, Rabil(22)
- Cuce, Pinar Mert(22)
- Sert, Durmuş(22)
- Bayram, Ozkan(21)
- Kamiloğlu, Aybike(21)
- Dirican, Ebubekir(20)
- Kadakal, Mahir(20)
- Abdioglu, Murat(19)
- Birinci, Ahmet(19)
- Tozlu, Alperen(19)
- Gerçek, Yusuf Can(18)
- Taylan, Osman(18)
- Cinar, Mehmet(17)
- Gul, Volkan(16)
- Hasar, Ugur C.(16)
- Kadakal, Huriye(16)
- Kara, Yakup(16)
Yayınlar
- MakaleAçık Erişim2025Scopus SJRQ1Optimization of Hemp Seed (Cannabis sativa L.) Protein Extraction and Glycation Conditions by Response Surface Methodology: Physicochemical, Functional, and Thermal Characteristics
Yüzer, Elvan; Kutlu, Naciye; Yüzer, Mustafa Onur
In this study, first, optimization using the response surface method was implemented to obtain the highest yield of protein isolate from defatted hemp seed under different extraction conditions. Optimum extraction conditions were determined with 0% salt concentration, 12 pH value, and 49°C temperature. The protein isolate produced under optimum conditions was subjected to the glycation process, and the glycation conditions were also optimized. The optimum conditions for glycation were determined as a protein isolate: sugar ratio of 1.6:1, temperature of 60°C, and time of 90 min, providing the most suitable glycation degrees and browning indices. There was no statistical difference between the glycated protein isolate obtained under these conditions and the nonglycated protein isolate in terms of emulsifying activity index and emulsion stability index. For total phenolic–flavonoid compounds and antioxidant activity, the sugar complex caused a decrease in these values. In addition, there was a high positive correlation between bioactive compounds. SEM micrographs showed relationships between hemp seed protein isolate and sugar, and these interactions led to a spongy three-dimensional microstructure. When the FTIR results were analyzed, the glycated isolate had stronger absorption at 3300–3200 cm−1 compared to the nonglycated isolate. In conclusion, this study reports important findings in terms of functional and characteristic properties of how monosaccharides affect glycation.
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İncele - MakaleYalnız künye2025Scopus SJRQ2A novel exopolysaccharide from cold-adapted yeast Rhodotorula glutinis, along with structural, rheological, antioxidant, and antibiofilm properties
Oztekin, Sebahat; Dikmetas, Dilara Nur; Karbancıoglu-Guler, Funda
In the present study, a novel exopolysaccharide EPS-BMD26 produced by cold-adapted yeast Rhodotorula glutinis was structurally examined, along with its rheological, antioxidant, and antibiofilm properties. High-performance liquid chromatography (HPLC) analysis revealed glucose and galactose as two monosaccharide constituents. The functional groups within the EPS-BMD26 structure were detected by Fourier transform infrared (FT-IR) spectroscopy. The 1H and 13C nuclear magnetic resonance (NMR) spectra of EPS-BMD26 also confirmed its β-D-glucan type with galactose residues with an average molecular weight of 118 kDa. Differential scanning calorimetry (DSC) analysis revealed that EPS-BMD26 had a high level of thermal stability, up to 326.16 °C. Scanning electron microscopy (SEM) analysis demonstrated that EPS-BMD26 had a porous microstructure with fissures. X-ray diffraction (XRD) analysis revealed its semi-crystalline nature. EPS-BMD26 showed moderate and concentration-dependent antioxidant potential recruiting different methods, including •OH, DPPH•, CUPRAC, and ABTS radical scavenging activities. Water-soluble EPS-BMD26 exhibited high water holding capacity of 190 ± 0.22% with a water solubility index of 60.6 ± 8.3%. At 1.25 mg mL-1, EPS-BMD26 inhibited biofilm formation of Staphylococcus aureus ATCC 25923 by 79.5%. Rheological characterization revealed that the aqueous solution of EPS-BMD26 had shear thinning and pseudoplastic behavior. Given these properties, EPS-BMD26 may be a promising bio-hydrocolloid, antibiofilm agent, and food additive for industrial applications.
AtıfScopus15WoS15OpenAlex17İncele - MakaleAçık Erişim2025Scopus SJRQ1Investigation of the phonological awareness of A1 level students learning Turkish as a foreign language
Güngör, Haluk; Koçak, Aslı; Maden, Sedat
Phonological awareness is pivotal in language learning, influencing speaking, writing, and listening abilities. Identifying factors that affect reading development is crucial for effective language instruction. This study explores the phonological awareness of A1-level learners of Turkish as a foreign language (TFL), examining how native language backgrounds impact this foundational skill. Ninety-three participants, whose native languages include Arabic, Indonesian, French, Russian, and Kazakh, were assessed using the Phonological Awareness subtest from the Early Literacy Test (EROT). Data analysis employed non-parametric statistical methods, specifically the Mann-Whitney U and Kruskal-Wallis tests. Results revealed no statistically significant relationship between gender and phonological awareness, although female participants exhibited higher average scores than males. Among native language groups, Kazakh speakers achieved the highest phonological awareness scores, whereas Indonesian speakers scored the lowest. These findings indicate that a learner’s native language significantly influences their phonological awareness in Turkish. Despite its limited scope, this pilot study underscores the essential role of phonological awareness in developing comprehensive language skills in TFL learners. l.
- MakaleAçık Erişim2025Scopus SJRQ3Chemical composition of essential oils and comparative analysis of enzyme inhibitory, antioxidant and antimicrobial activities in essential oils of endemic Gelasia sericea (Aucher ex DC.) Zaika, Sukhor. & N. Kilian
Fidan, Muhammed Said; Baltacı, Cemalettin; Akmeşe, Osman; Sefalı, Abdurrahman; Aygül, İmdat; Öz, Mehmet
In this study, essential oil from the aerial parts of Gelasia sericea (Aucher ex DC.) Zaika, Sukhor. & N. Kilian was extracted via hydrodistillation using a Clevenger apparatus. GC-MS/FID analysis determined aldehydes (28.31%) as the dominant group, with eucalyptol (8.71%) as the main constituent. Antioxidant activities were exhibited using DPPH, ABTS, and FRAP assays, with the essential oil demonstrating relatively higher antioxidant properties. The essential oil also showed higher levels of bioactive components, including total antioxidant capacity (160.26 mg AA eq./100 mL), total phenolic content (21.57 mg GA eq./100 mL), and total flavonoid content (14.85 mg QE eq./100 mL). While G. sericea essential oil demonstrated some antioxidant activity, it was significantly lower compared to the reference standard ascorbic acid (AA). The antimicrobial results showed relatively higher antimicrobial activity compared to most bacterial and fungal strains, as evidenced by lower MIC and MBC values and larger inhibition zones. Nevertheless, chloramphenicol (CH) and nalidixic acid (NA) continually showed superior antimicrobial efficacy, with the lowest MIC and MBC values and the largest inhibition zones. The essential oil also demonstrated potent enzyme inhibitory activity, especially against CA-II, AChE, and BChE, with the lowest IC50 value observed for CA-II, highlighting its potential as a potent enzyme inhibitor. However, the essential oil exhibited comparatively greater inhibition against AChE, BChE and α-amylase but was less effective overall. These findings suggest that the G. sericea essential oil has important antioxidant potential and enzyme inhibitory activity, while the essential oil shows varying efficacy across different enzymes.
AtıfOpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ1Preschool children's social skills, problem behaviors, academic self-esteem and teacher-child relationship: a serial mediation model
Tutkun, Cansu; Eskidemir Meral, Seda
Introduction: Research has shown that children's social skills have effects on their problem behaviors. However, the mechanisms through which social skills contribute to reducing problem behaviors need further clarification. Methods: This study examined the relationship between preschool children's social skills and problem behaviors, as well as the independent and serial mediating roles of academic self-esteem and teacher-child relationship in this relationship. The study included 382 children aged 3–5 years, randomly selected in Türkiye. Results and discussion: As a result of the study: (1) there was a significant and negative relationship between problem behaviors and social skills, academic self-esteem and teacher-child relationship; (2) the mediating role of academic self-esteem and teacher-child relationship in the relationship between social skills and problem behaviors was supported; and (3) the serial mediating role of academic self-esteem and teacher-child relationship in the effect of social skills on problem behaviors, respectively, was found. These findings indicated that children's social skills may help to increase their academic self-esteem, improve the teacher-child relationship, and thus reduce their problem behaviors. Therefore, these results have important implications for designing interventions to increase preschool children's social skills, academic self-esteem, and teacher-child relationship, as well as to prevent the early development of problem behaviors.
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İncele - MakaleAçık Erişim2025Scopus SJRQ1Soil Permittivity Extraction by Time-Domain Free-Space Calibration-Free Microwave Measurements With No Thickness Information
Hasar, Ugur Cem; Korkmaz, Huseyin; Kaya, Yunus; Iliev, Teodor
An attractive microwave free-space method is proposed for permittivity extraction of soil samples using calibration-free time-domain measurements. Different from other similar methods in the literature which use the layer-stripping approach in the forward direction in the extraction process, its formalism is based on the layer-stripping approach in the backward direction, whereby allowing extraction of permittivity from interfacial reflection coefficient only without resorting to any thickness information, especially useful for time-domain analysis of multilayer structures having multiple reflection terms. Effects of angle misalignment, loss, and surface roughness on the extraction performance of the proposed method (PM) are analyzed by numerical examples. Permittivity measurements of three low-loss flat solid samples [polypropylene (PP), polyethylene (PE), and polyoxymethylene (POM)] were first performed by a free-space setup operating over 1–18-GHz frequency range to validate our methodology and compare its accuracy against other similar methods in the literature. Thereafter, permittivity measurements of two soil samples sieved with similar and different sizes (coarse- and fine-grained soil samples) by the same free-space setup were then considered to assess the applicability and performance of our method for electromagnetic property analysis of homogeneous and partially inhomogeneous soil samples.
AtıfScopus9WoS6OpenAlex8İncele - MakaleAçık Erişim2025Scopus SJRQ3Essential Parameters for the Reconstruction of Society: A Critical Analysis of Sūrat al-Ḥujurāt, Verse 10
Aras, Zakir
In the tenth verse of Sūrat al-Ḥujurāt, the fundamental parameters set by Allah for the structuring of Muslim communities can be delineated as the following: brotherhood, reformation, nation, identity, justice, piety, and community. A close analysis of the verse reveals a hierarchy among these parameters. While the brotherhood forms the first layer of the pyramid, the final layer is the community. The supporting layer that sustains all other levels is the layer of justice. At a fundamental level, the ultimate goal of these layers is to attain Allah’s mercy. Consequently, at the pinnacle of these layers lies the pyramid of mercy. The study concludes that there are no clear demarcation lines among these layers; instead, they are interconnected and interdependent. This analysis provides important clues for strengthening the social and moral structure of Muslim societies. The hierarchical structure of these parameters and the relationships between them play a key role in ensuring social solidarity and justice.
- MakaleAçık Erişim2025Scopus SJRQ3Determinants of foreign direct investment in the textile sector: a research with IT2 Fuzzy TOPSIS methodology; [Determinanți ai investițiilor străine directe în sectorul textil: o cercetare cu metodologia IT2 Fuzzy TOPSIS]
Şahin, Recep Uğurcan; Gökhan, Nalbant Kemal; Keskin, Abdulkadi̇R; Özdemir, Yavuz; Keskin, Abdurrahman
This study aims to identify the determinants of foreign direct investment (FDI) in the textile sectors in Poland, Romania, Hungary, Slovakia, Czechia and Türkiye. The study assesses these criteria through paired comparisons conducted by experts who have a minimum of 10 years of professional experience in the field and analyses them using the IT2 Fuzzy Technique for Order of Preference by Similarity to the Ideal Solution (TOPSIS) technique. According to the findings, the criteria with the highest degree of importance are national security, inflation rate, patent and trademark protection, transportation networks and market size. On a country-by-country basis, Poland has a higher investment attraction potential compared to other countries according to the criteria of openness, corruption, legal regulations and privatization policies, import and export quotas, education and professional status, renewable energy resources, sustainability, intellectual property protection, patent and trademark protection and national security. Hungary scores highest on import and export quotas and tax rates, while Slovakia stands out on import and export quotas and waste management/environmental regulations. Romania scores highest on profitability and debt financing, labour costs and import and export quotas. Czechia scores highest on inflation rate, political stability, legal regulations and privatization policies, economic incentives, general trade policies, import and export quotas and cultural situation and lifestyle. Türkiye scores the highest in terms of market size, GDP growth rate, access to raw materials and markets, technological infrastructure and innovation, transport networks, production sites, energy production, import and export quotas and business-friendly approaches.
AtıfScopus1WoS1OpenAlex2İncele - MakaleAçık Erişim2025Scopus SJRQ3Effect of Fe Amount on Microstructure and Fluidity of A356 Alloy
Durmus, M.; Dispinar, D.; Gavgali, M.; Colak, M.
The most important factor affecting the production of quality parts with aluminum alloys is the quality of molten metal. One of the determining factors in molten metal quality is the minimization of trace impurity elements in the alloy. One of the most harmful impurities among these elements is Fe, and its amount is a determining factor in its negative effect. It is known that Fe negatively affects the quality of aluminum, causing a decrease in mechanical properties. Most of the Fe in the alloy forms intermetallic from needle-like to complex Chinese-script structures. In this study, carbon steel and stainless-steel rods were immersed in the liquid metal at casting temperatures of 700°C and 750°C in A356 aluminum casting alloy and were subjected to diffusion for 1, 2 and 5 hours. Subsequently, a 4-channel flow test mold with various section thicknesses was used. All samples were measured by measuring the liquid metal advance distances of all sections in mm. Then, microstructure analyses were performed on the obtained sections. As a result, it is observed that as Fe diffusion increases, liquid metal advancement distances decrease and Fe intermetallics form in the microstructure. © The Author(s) 2025. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
- MakaleAçık Erişim2025Scopus SJRQ3Online software for a new risk assessment method in occupational health and safety: RSCAL
Ateş, Fatih Mehmet; Doğan, Ömer
Risk assessment is necessary for the safety of employees in the workplace. Risk assessment methods contain some deficiencies arising from the persons performing the analysis. In order to partially overcome this situation, a risk assessment method has been developed by the authors by utilizing the data on occupational accidents in Turkey. In the method, Occupational Health and Safety Professionals who will perform the risk assessment can calculate the risk score without giving a numerical value for any hazard and corresponding risk that they identify in the workplace. In the study, a user-friendly online software called RSCAL by the authors, with a web address of https://rscal.com.tr/, which can meet all the above-mentioned requirements and calculate risk scores for workplaces serving in all types of sectors, has been developed. Through this online application, the identified hazard, risk and exposures of the business to be analyzed can be selected; the necessary corrective and preventive actions can be written by the user and then the risk score can be calculated. After that, all hazards specific to the enterprise can be meticulously identified and the risk assessment of the enterprise can be made by calculating the risk scores. This risk assessment can also be printed out in excel file format. In the future, parameters such as the deadline for each hazard, the legal requirement or standard from which the corrective preventive action to be taken arises can be added to the RSCAL calculation tool.
AtıfScopus1İncele - MakaleAçık Erişim2025Scopus SJRQ3Phytochemical analysis and biological evaluation of essential oils and extracts from Heracleum pastinacifolium subsp. incanum (Boiss. & A.Huet) P.H.Davis, an endemic plant from Turkey
Yuca, Hafize; Sefalı, Abdurrahman; Aydın, Bilge; Karadayı, Mehmet; Gülşahin, Yusuf; Yazıcı, Ayşenur; Karakaya, Songül; Demirci, Betül; Çoban, Furkan; Özdemir, Erkan
Essential oil content of and phenolic compounds flower-fruit, root, and aerial parts of Heracleum pastinacifolium subsp. incanum were analysed by GC/MS and LC/MS methods, respectively. Antidiabetic, anticholinesterase, and antioxidant activities of flower-fruit, root, aerial parts methanol extracts were evaluated. Apiole (35.0%), myristicine (72.2%), and myristicine (15.1%) were found as major compounds of fruit-flower mixture, root, aerial part essential oils, respectively. Hesperidin was found the highest amount in aerial part and flower-fruit extracts with 8904.2621 ng/mL and 11558.3634 ng/mL values, respectively. Fruit-flower extract showed the highest activity against α-glucosidase (24%). Root extract demonstrating the highest activity (18%) against AChE enzyme. Flowers-fruits mixture methanol extract had a higher % inhibition value on ABTS·+ and DPPH•. Flowers-fruits mixture methanol extract was rich in total phenol, total tannin, and protein content. All the extracts were determined as genetoxically safe according to the results of Ames/Salmonella, Escherichia coli WP2 and Allium cepa assays.
AtıfScopus1WoS2OpenAlex3İncele - MakaleAçık Erişim2025Scopus SJRQ1Emotion regulation skills, brain-derived neurotrophic factor, cortisol hormone levels in primary school students in Türkiye: a cross-sectional and correlational analysis study
Kırbaş, Zila Özlem; Bayraktar, Bülent; Odabaşi Aktaş, Elif
Background: Hormones are molecules that contribute significantly to mental and physical health due to their role in emotion regulation (ER) processes. However, the role and effect of hormones on the ER has not yet been fully elucidated. In this study, it was aimed to examine the salivary Brain-derived neurotrophic factor (BDNF) and cortisol hormone response to support ERS in primary school students depending on some parameters. Method: This cross-sectional and correlational study was conducted in the Eastern Black Sea Region of Türkiye between April 2023 and June 2023. In the sample selection, after the number of students was determined in proportional stratification, the sample selection method was made by simple random selection from each class list, first according to the school and then the grade level of each school. A total of 177 healthy students between the ages of 8 and 10 who attended these schools, were allowed to participate in the research by their families, and were volunteers, were included in the study. Data were collected using the Personal Information Form and the Emotion Regulation Scale for Children and saliva collection cups. Human-specific Brain-derived neurotrophic factor ELISA Kit (BT LAB, Cat.No E1302Hu, CHINA) for measuring BDNF levels in saliva; In measuring the level of cortisol hormone in saliva, Human Cortisol ELISA Kit (BT LAB, Cat.No E 1 003Hu, CHINA) was used in accordance with the procedure specified in the manufacturer’s catalogue. Data were evaluated using the SPSS 26.0 for Windows (SPSS, Chicago, Il, USA) package program. Independent Samples Test and One-Way ANOVA test, correlation and Multiple Linear Regression analysis were used to evaluate the data. P <.01 and p <.05 significance levels were used as statistical significance values. Results: A statistically significant correlation was found between the mean total score of the Emotion Regulation Skills Scale for Children and the mean level of salivary BDNF, and a negative correlation between the mean level of salivary cortisol (p˂0.01). Conclusions: Within the scope of the data obtained in our current study, BDNF levels were found to be high and cortisol hormone levels to be low in children with high ERS.
AtıfScopus5WoS4OpenAlex4İncele - MakaleAçık Erişim2025Scopus SJRQ1The impact of osmotic dehydration and microwave drying process conditions on the quality characteristics of celery roots (Apium graveolens l. Subsp. rapaceum)
Kutlu, Naciye
In this study, celery roots were dried by the osmotic dehydration-assisted microwave drying method, and both osmotic dehydration (OD) and microwave conditions were optimized using response surface methodology (RSM). Utilizing a Box–Behnken experimental design, the drying time was minimized while maximizing the total phenolic compounds (TPC) in dried samples at different OD salt concentrations (10, 20 and 30 %), OD temperatures (30, 45 and 60 °C), OD durations (1, 2 and 3 h) and microwave powers (210, 350 and 490 W). The optimal drying conditions were identified as 15.05 % for OD salt concentration, 42.5 °C for OD temperature, 1.6 h for OD duration and 489.7 W for microwave power. Under these optimal conditions, the predicted values for time and TPC were 10 min and 104.38 mg GAE/100 g, respectively. The composite desirability value was 0.99 as a result of optimization. The experimental values for time and TPC were measured as 11 min and 97.45 mg GAE/100 g, respectively. The predicted and experimental values were found to be statistically similar to each other. A comparison with control groups designed to assess the effects of OD and microwave processes revealed that these processes significantly influenced both quality (TPC, antioxidant activity, color) and drying characteristics (drying time, rehydration rate). The greenness assessment value was calculated as 78 using the MoGAPI tool. Consequently, the application of OD pretreatment and use of the innovative microwave drying method as a final drying step in vegetable drying was successfully implemented to enhance the properties of the final product.
AtıfScopus3WoS3OpenAlex4İncele - MakaleAçık Erişim2025Scopus SJRQ2Effect of the coronavirus disease 2019 pandemic on beliefs and practices regarding hand hygiene among intensive care nurses: A repeated cross-sectional study
Karadas, Yasemin Ay; Sahin, Sibel Yilmaz; Dönmez, Elif; Temiz, Gamze
Hand hygiene is an important factor in the prevention of healthcare-associated infections. Studies show healthcare professionals' hand hygiene practices vary and are not at sufficient levels. This study aimed to examine the effect of the COVID-19 pandemic on the beliefs and practices of nurses working in intensive care units (ICU) towards hand hygiene. This was longitudinal, repeated, and cross-sectional study. The study was conducted in 2 phases between January 2,2020 and March 10,2021 in the intensive care unit of a university hospital in northern Turkey. No sampling method was used. The objective was to reach the entire population. The first phase of this study was completed with 119 (76% of the population) ICU nurses and the second phase with 85 (70% of the population) ICU nurses. The data were collected with the personal information form, hand hygiene belief scale (HHBS), hand hygiene practices inventory (HHPI) and the views of the intensive care nurses related to COVID-19. Descriptive statistics such as mean and standard deviations, frequency, and percentages and analytical statistics such as t-test, Mann-Whitney U test, Kruskal-Wallis test were used for data analysis at the significance level of P < .05. The majority of the nurses who participated in the study were female (75.6%; 69.4%), with a mean age of 30.82 ± 5.51 and 30.58 ± 5.51 years, respectively. There was a significant difference (P < .05) between the median HHBS (P = .002) and HHPI (P = .001) scores before and after COVID-19. All nurses (100%) reported that the pandemic was effective in hand hygiene practices. In this study, it was determined that the hand hygiene beliefs and practices of nurses were high, and the scores of nurses' hand hygiene beliefs and practices after COVID-19 increased significantly. Healthcare professionals must always adhere to stringent standards of hand hygiene, rather than merely during periods of heightened challenges. To ensure the sustainability of optimal hand hygiene practices, it is recommended that motivational interventions that strengthen beliefs and practices related to hand hygiene should be implemented and that studies should be conducted to evaluate their effectiveness.
AtıfScopus3WoS3OpenAlex4İncele - MakaleAçık Erişim2025Scopus SJRQ2Performance analysis of piezoelectric-based energy harvesting in reinforced concrete buildings under seismic and live loads
Ergün, Mustafa; Uyar, Mehmet; Malgaca, Levent
The demand for autonomous energy solutions in seismic regions is increasing for the uninterrupted operation of structural health monitoring systems. In this context, energy harvesting systems offer a solution for low-power devices, especially in earthquake zones where external energy sources may be interrupted. This study evaluates the energy harvesting capacity of a piezoelectric energy harvesting mechanism placed at specific locations in the columns of a reinforced concrete structure, considering both earthquake and live load conditions. A smart building model is developed by placing sensor modules with piezoelectric material on the columns of a three-story reinforced concrete building. The finite element model of the smart building, which is formed by integrating various technologies and sensors, is created in ANSYS, and specific locations on the columns are selected as sensor points. Dynamic analyses are performed under earthquake conditions by considering seismic records from the Imperial Valley, Erzincan, and Darfield earthquakes. Experimental results of a smart structure with patched piezoelectric material are used to verify the simulation results. The voltage, current, and power responses obtained from the sensor points are examined with the payload effect placed at the end point of the sensor module. When the power values collected from the sensor points are compared, it can be said that the maximum power obtained from the smart building under both earthquake and live load is 0.355 W, while the minimum power value reaches 0.168 W. The results show that the energy harvesting mechanism can provide external power to support electronic devices in regions where earthquake effects are frequent and high. Thus, this study presents an innovative contribution to smart building systems by investigating the energy harvesting potential under earthquake and live loads in a reinforced concrete structure equipped with piezoelectric sensors. The model, validated with numerical and experimental analyses, proposes a sustainable energy source for structural health monitoring systems in seismic regions.
AtıfScopus1WoS1OpenAlex3İncele - MakaleAçık Erişim2025Scopus SJRQ1Experiences of adults with type 2 diabetes mellitus with low socioeconomic status: a qualitative study
Semerci Çakmak, Vahide; Sönmez Sari, Ebru; Çetinkaya Özdemir, Serap
Background: Adults with diabetes encounter various challenges related to managing their condition. In this study, we explored the experiences of adults with type 2 diabetes mellitus with low socioeconomic status in Türkiye. Methods: This study was conducted as a phenomenological qualitative research. The purposive sampling method was used to select adults with type 2 diabetes. Data saturation was achieved with 20 patients. The data were collected through a demographic information form and a semi-structured questionnaire. The participants were interviewed by phone. The interviews were conducted in a quiet environment where the participants could respond comfortably. During the data analysis process, the content analysis approach suggested by Graneheim and Lundman (2004) was used. This method involves identifying meaningful units within the text, coding these units, and developing sub-themes and main themes. The MAXQDA 20 software was used for data management. Results: The participants were between 41 and 71 years old. Four main themes and ten subthemes were identified in the analysis. Themes: The identified themes included difficulties with dietary management of diabetes, individual difficulties, difficulties with self-management in diabetes, and coping strategies. According to Theme 1, it was observed that the participants experienced difficulties in managing nutrition in diabetes due to the economic aspect of diet and the inability to adapt to the diet. According to Theme 2, it was observed that the participants faced physical, psychological, and social difficulties. According to Theme 3, it was observed that the participants faced difficulties related to diabetes self-management, including blood glucose monitoring, insulin injection administration, and maintaining glycemic control.” According to Theme 4, it was observed that the participants attempted to cope with diabetes-related difficulties through healthy lifestyle habits and family support. Conclusion: Our findings indicate that adults with type 2 diabetes in low socioeconomic status face challenges related to biopsychosocial factors, nutrition, and diabetes self-management. However, these individuals managed their difficulties by adopting healthy lifestyle behaviors and relying on family support. The challenges faced by adults with diabetes may be alleviated through awareness training on dietary management and glycemic control.
AtıfScopus8WoS6OpenAlex9İncele - MakaleAçık Erişim2025Scopus SJRQ3The Effect of Weathering on Color and Glossiness Properties of Polyurethane-Modified Water-Based Varnish Layers Applied to Thermally Treated Ash Wood
Ulay, Göksel; Akter, Mete; Çakıcıer, Nevzat; Peker, Hüseyin; Ayata, Ümit; Atılgan, Abdi; Çiftçi, Seymen
The effects of artificial weathering (168, 336, and 504 h) on the glossiness values and color parameters of varnished, polyurethane-modified ash wood were investigated. Samples included control samples without treatment and thermally treated samples under two different conditions (190 °C for 1.5 h and 212 °C for 2 h), all coated with a polyurethane-modified water-based varnish. In non-thermally treated and varnished samples, decreases in L* values were observed after weathering, while increases were noted in ho, C*, b*, and glossiness at 60° in both perpendicular and parallel directions to the fibers. After weathering, for samples thermally treated at 190 °C for 1.5 h and varnished, increases were observed in glossiness values at 20° and 60° in both directions, as well as in L*, b*, and ho values. Conversely, decreases were noted in a* and C* values. In samples thermally treated at 212 °C for 2 h and varnished, increases in a*, L*, ho, b*, and C* values were detected after weathering, whereas decreases were observed in glossiness at all angles (20° and 60°) in both directions. The ∆E* values showed a decreasing trend in non-thermally treated varnished samples after weathering, while an increase was observed in samples thermally treated at 212 °C for 2 h and varnished.
AtıfScopus1OpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ2Investigation of the Structural and Corrosion Properties of Duplex Surface Treated AZ31 Magnesium Alloy
Durna, İdris; Çatar, Recep; Altun, Hikmet
The AZ31 alloy was first completely coated with pure aluminum in this study using the electric arc spray coating method. Then, considering the existing benefits of the micro-arc oxidation process (MAO), a ceramic oxide coating was formed by applying MAO to the Al-coated surface. Thus, a duplex coating was obtained on the base material. The structural properties of both the Al-coated samples and the duplex coatings obtained after the MAO process were investigated by scanning electron microscopy, energy-dispersive x-ray analysis (EDS), and x-ray diffraction devices. The electrochemical behavior of the coatings was carried out in a 3.5 wt.% NaCl solution. The samples were polarized from the potential value − 0.2 V below the corrosion potential to the maximum value of 2 V at a scanning rate of 1 mV/s, and potentiodynamic polarization curves were recorded. According to the electrochemical experiments, Al coatings and duplex coatings improved the corrosion resistance of AZ31 alloy. The corrosion current density values were 298.23 µA/cm2 for the base material, 0.415 µA/cm2 for the Al coating, and 0.014 µA/cm2 for the duplex coating, respectively. The best corrosion resistance among all samples was obtained in duplex-coated samples obtained by MAO. Due to their low corrosion resistance, magnesium alloys are restricted in many areas, especially aviation, automotive, and biomedical. Therefore, this study aimed to improve the corrosion resistance of AZ31 magnesium alloy.
- MakaleAçık Erişim2025Scopus SJRQ2Exploring preschool teachers’ perspectives on social and emotional learning in early childhood: A qualitative inquiry
Özdemir Beceren, Burcu; Baydemir, Ceren; Arı Arat, Ceren
This study aimed to explore preschool teachers’ knowledge, perceptions, and classroom practices regarding social-emotional learning in early childhood education settings. The study was designed as a qualitative research study with a phenomenological approach and focused on the lived experiences of 10 preschool teachers working with children aged 3–6 in Çanakkale. Participants were selected through purposive and maximum variation sampling. Data were collected using semi-structured interviews and demographic forms. The interview questions were developed based on a literature review and expert feedback. Data were analyzed using both inductive and deductive content analysis techniques. Themes and sub-themes were formed collaboratively by the researchers. The findings revealed that preschool teachers define SEL mainly through themes such as social-emotional skills, learning methods, and peer education. Communication and empathy were emphasized as key components of SEL. Teachers' responses focused on specific aspects such as social-emotional skills, peer education and learning methods, and reflected a limited understanding of the broader and complex nature of SEL. Play-based learning and learning through role models were the most frequently mentioned methods. Peer education was also identified as a valuable tool in promoting SEL. Teachers expressed the need for more support and training in implementing SEL effectively. Preschool teachers recognize the importance of SEL and apply a variety of strategies in their classrooms. However, their understanding and practices vary depending on their experience and training. This study highlights the need for structured SEL training programs to enhance teachers’ skills and promote more consistent and effective SEL practices in early childhood education.
AtıfScopus2OpenAlex1İncele - MakaleAçık Erişim2025Scopus SJRQ1Imagery and motivation in performance sports: a psychological study on weightlifters
Aksoy, Ebu Bekir Sıddık; Ceyhan, Mehmet Ali
Background: This study investigates the relationship between imagery use and motivation among weightlifters, focusing on how demographic factors like gender, education level, and national status influence these aspects. Imagery, a mental strategy used to achieve goals and motivation, an intrinsic driving force, is explored within weightlifting. Despite research linking mental strategies to performance, studies targeting weightlifters still need to be expanded. This study examines how imagery impacts this group’s motivation levels and technical performance. Methods: The study included 347 licensed athletes participating in the 2022 Turkish Individual Junior and U-23 Weightlifting Championship in Van. Data were collected online using the “Personal Information Form,” the “Sport Imagery Questionnaire,” and the “Sport Motivation Scale.” Analyses were conducted with SPSS, assessing normality through skewness and kurtosis. Parametric tests, such as t-tests and one-way ANOVA, were applied for group comparisons. At the same time, Pearson’s Correlation Coefficient was used to explore relationships between continuous variables, including age, years of experience, and competition weight category. Results: A significant positive correlation was found between imagery use and motivation, particularly in the Cognitive Imagery (CI), Motivational Specific Imagery (MSI), and Motivational General-Mastery (MGM) subdimensions. Education level significantly influenced imagery use and motivation, with higher levels linked to better mental training and increased motivation. Although gender did not significantly affect these factors, female athletes displayed more robust emotional responses, enhancing their ability to use positive emotions effectively. Age and sports experience were also positively associated with effective imagery use, indicating that experienced athletes leverage mental strategies more proficiently. Conclusions: The findings emphasize imagery as a vital tool for enhancing motivation and performance in weightlifters. Athletes with higher education levels and more experience benefit more from mental training. Future research should broaden its scope to include diverse sports and age groups, while longitudinal studies can provide deeper insights into the evolution of imagery and motivation over time.
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