Sürdürülebilir Kalkınma Amaçları

Yazarlar

  • MakaleYayıncıda açık erişim2024Scopus SJRQ1
    Enzyme Inhibitory, Physicochemical, and Phytochemical Properties and Botanical Sources of Honey, Bee Pollen, Bee Bread, and Propolis Obtained from the Same Apiary

    Gercek, Yusuf Can; Dagsuyu, Eda; Basturk, Fatma Nur; Kırkıncı, Seran; Yıldırım, Nazlıcan; Kıskanç, Gamze; Özmener, Bahar; Unlu, Yigit Sabri; Kalkan, Seda Nur; Boztaş, Kadir

    Bee products are an important source of nutrients and bioactive phytochemicals. This study aimed to determine the chemical composition (proximate composition, general phytochemical composition, sugar, and phenolic profiles) of four different products (honey, bee pollen, bee bread, and propolis), obtained from the same apiary, as well as to assess their biological activity through antioxidant and enzyme inhibition assays (α-amylase, α-glucosidase, lipase, AchE, neuraminidase, angiotensin-converting enzyme, urease, trypsin, tyrosinase, carbonic anhydrase, thioredoxin reductase, adenosine deaminase). Clear differences were observed among the samples in terms of both chemical composition and biological activity. The analysis revealed that bee pollen exhibited the highest carbohydrate content (87.9%), while propolis was identified as the richest source of phenolic compounds (14,858.9 mg/kg) among the analyzed samples. Propolis exhibited the highest biological activity in all applied antioxidant assays (CUPRAC, DPPH•, and ABTS•+) and in most enzyme inhibition assays. Notably, the α-glucosidase inhibition activity of propolis was comparable to that of the reference standard. In addition, honey exhibited remarkable trypsin inhibition, also comparable to the applied standard. These findings highlight the diverse bioactivities of hive products, which could play a key role in promoting health and preventing diseases.

    • SDG 2 · Açlığa Son
    AtıfScopus17WoS16OpenAlex16
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  • MakaleYalnız künye2024Scopus SJRQ2
    Middle School Fifth-Grade Students’ Level of Understanding the Concept of Condensation in Different Contexts

    Cengiz, Ekrem; Arıcı, Faruk

    Evaporation, condensation, and boiling are fundamental concepts taught in science and chemistry classes, closely linked to daily life. These concepts are vital for students to grasp the transformation and conservation of matter, the particulate nature of matter, and related principles. This study evaluated fifth-grade students’ comprehension of condensation across various contexts. The research involved 80 male and 59 female students from a public school in a qualitative phenomenological study. Data analysis utilized the content analysis method. As a result of the study, it was revealed that the students who participated in the research did not understand the concept of condensation sufficiently and could not explain this concept at the desired level in different contexts. Based on the findings, incorporating real-life contexts when teaching the concept of condensation can enhance the understanding of the topic. Moreover, it highlights the significance of an investigative approach to learning new concepts.

    • SDG 4 · Nitelikli Eğitim
    AtıfScopus1WoS1OpenAlex2
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  • MakaleYalnız künye2024Scopus SJRQ2
    The wound healing effect and DNA damage repair of exopolysaccharide extracted from Weissella cibaria MED17

    Kahraman-Ilıkkan, Özge; Akad Dinçer, Selin; Bağdat, Elif Şeyma; Çağlar, Işılsu; Dertli, Enes; İspirli, Hümeyra; Şahin, Feride İffet

    Lactic acid bacteria can synthesize exopolysaccharides (EPSs), and some of these EPSs have pharmaceutical or medicinal properties. However, the wound healing capacities of EPSs have rarely been reported. In this study, EPS extracted from Weissella cibaria MED17 was used to investigate wound healing capacity. MED17 EPS was previously characterized and antioxidant capacity was also demonstrated. The application dose of the compound was determined by the MTT assay. The comet assay was applied to reveal the free radical scavenging activity and protection capacity of MED 17 against DNA damage by inducing oxidative stress and DNA damage with Mitomycin-C (MMC) in the cells. The comet assay showed that 15 mg/ml MED 17 EPS could ameliorate DNA damage by 50%. Moreover, the scratch test investigated the wound-healing effect of MED 17 EPS on HT-29 colon cells. MED 17 EPS could stimulate the migration of HT-29 and ameliorate MMC-induced DNA damage. However, further studies need to be conducted to clarify the mechanisms of the wound-healing process of MED 17.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus5WoS5OpenAlex5
    ScopusWeb of Scienceİncele
  • MakaleYayıncıda açık erişim2024Scopus SJRQ3
    Antioxidant effect of Rosa pimpinellifolia L. fruit extract on cholestatic liver injury: an experimental study

    Demircioglu, Mahmut Kaan; Demircioglu, Zeynep Gul; Cakir, Ozlem; Yanar, Karolin; Ozguven, Muveddet Banu Yilmaz; Atukeren, Pinar; Gulcicek, Osman Bilgin; Citgez, Bulent; Yazici, Pinar

    BACKGROUND: Antioxidants have been considered a rational curative strategy to prevent and cure liver diseases involving oxidative stress. An acute obstructive jaundice rat model was established to investigate the in vivo hepatoprotective efficacy of Rosa pimpinellifolia L. METHODS: The experimental jaundice model was performed by binding the main bile duct in 25 male Sprague-Dawley rats. All rats were randomly divided into five groups: first group: laparotomy-sham-only, second group: biliary tract binding (control), and third, fourth, and fifth groups: treatment groups with 250, 500, and 750 mg/kg fruit extracts daily, respectively. RESULTS: Considering dosage, although there was no significant therapeutic effect in the 250 mg/kg of Rosa pimpinellifolia L. group, the best results were found in the 500 mg/kg dose group, while results in the 750 mg/kg dose group showed consistent correlation with proinflammatory response. With regard to biochemical parameters, lipid hydroperoxide level in the rat serum and liver tissue was significantly decreased in all treatment groups. Amadori products, which are one of the early markers of glycol-oxidative stress, showed statistical significance in the treatment. CONCLUSION: It was revealed that the antioxidant effect of Rosa pimpinellifolia L. was more prominent in the early stages of hepatic injury secondary to oxidative stress.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus4WoS1OpenAlex2
    ScopusWeb of SciencePubMedİncele
  • MakaleYalnız künye2024Scopus SJRQ1
    Optimum design of steel frames against progressive collapse by guided simulated annealing algorithm

    Tayfur, Bilal; Daloğlu, Ayşe T.

    In this paper, a Guided Simulated Annealing (GSA) algorithm is presented to optimize 2D and 3D steel frames against Progressive Collapse. Considering the nature of structural optimization problems, a number of restrictions and improvements have been applied to the decision mechanisms of the algorithm without harming the randomness. With these improvements, the algorithm aims to focus relatively on the flawed variables of the analyzed frame. Besides that, it is intended to be more rational by instituting structural constraints on the sections to be selected as variables. In addition to the LRFD restrictions, the alternate path method with nonlinear dynamic procedure is used to assess the risk of progressive collapse, as specified in the US Department of Defense United Facilities Criteria (UFC) Design of Buildings to Resist Progressive Collapse. The entire optimization procedure was carried out on a C# software that supports parallel processing developed by the authors, and the frames were analyzed in SAP2000 using OAPI. Time history analyses of the removal scenarios are distributed to the processor cores in order to reduce computational time. The GSA produced 3% lighter structure weights than the SA (Simulated Annealing) and 4% lighter structure weights than the GA (Genetic Algorithm) for the 2D steel frame. For the 3D model, the GSA obtained 3% lighter results than the SA. Furthermore, it is clear that the UFC and LRFD requirements differ when the acceptance criteria are examined. It has been observed that the moment capacity of the entire frame is critical when designing according to UFC.

    AtıfScopus5WoS5OpenAlex1
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  • MakaleYalnız künye2024Scopus SJRQ3
    LOGARITHMIC SEMI P-FUNCTION AND SOME NEW INEQUALITIES

    Kadakal, Mahir; İşcan, İmdat

    In this study, we introduce and study the concept of logarithmic semi P functions and their some algebraic properties. Then, we obtain the Hermite-Hadamard integral inequality for the log semi-P-functions. After that, we obtain some new inequalities by using Hölder, Hölder-İşcan and power-mean integral inequalities and show that the result obtained with Hölder-İşcan inequality gives better approach than the Hölder integral inequality. Some applications to special means of real numbers are also given.

    AtıfScopus1
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  • MakaleYalnız künye2024Scopus SJRQ1
    Middle School Students’ Problem Solving Performance: Identifying the Factors that Influence It

    Öztürk, Mesut; Sarikaya, İsmail; Ada Yıldız, Kübra

    This research was carried out to examine the serial mediation role of mathematics self-efficacy and metacognition for problem-solving in the effect of reading comprehension on problem-solving. The relational research model, one of the quantitative research designs, was used in the study. A total of 699 middle school students studying in official public schools in Turkey participated in the study. SPSS and PROCESS macros were used in the analysis of the data of the study. The study revealed that reading comprehension, mathematics self-efficacy, and metacognition were related to problem-solving. The result of the study showed that mathematics self-efficacy and metacognition significantly mediate the relationship between reading comprehension and problem-solving.

    • SDG 4 · Nitelikli Eğitim
    AtıfScopus10WoS7OpenAlex19
    ScopusWeb of Scienceİncele
  • MakaleYalnız künye2024Scopus SJRQ2
    Investigation of Vibration Control Performance with Modified Motion Planning Based on Basic Functions for Composite Robot Manipulators

    Uyar, M.

    When flexible manipulators complete their movements to the desired position, vibrations occur at the endpoint. Reducing vibrations is an important advantage for eliminating positioning errors and monitoring position accuracy. However, the increase in vibration amplitudes leads to the inability to complete the planned tasks in the applications and results in loss of productivity. Therefore, the reduction of end-effector vibrations is an important research area. In this study, a motion-based control (MBC) method with designed motion profiles is introduced to reduce the endpoint vibrations of epoxy–glass-reinforced composite manipulators. Three different motion profiles, namely Modification-1, Modification-2, and Modification-3, are designed according to time and maximum velocity values depending on the system's frequencies. For the design of Modification-1, variable deceleration and acceleration times are considered, while for Modification-2 and Modification-3, both the maximum angular velocity and the deceleration and acceleration times are utilized. For two different angular positions and motion times, all motion profiles are applied to two composite manipulators with different frequencies, and the results are experimentally and numerically obtained to examine the vibration performance of MBC. Simulation results confirmed with experiments are achieved using mathematical models in ANSYS. To evaluate the effectiveness of MBC, the change in RMS values of endpoint vibration responses and the reduction rates are presented comparatively for all motion profiles. The results show significant advantages for the MBC method, reducing vibrations by approximately 99%, and eliminating positioning errors caused by vibrations.

    AtıfScopus3WoS4OpenAlex4
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  • Kitap BölümüYalnız künye2024
    Green entrepreneurship and sustainable economic growth: A conceptual research

    Esmer, Yusuf; Imamoglu, Iyas

    In recent years, environmental and economic problems, such as financialcrises, global pandemics, natural disasters, and climate change, have revealed the importance of sustainable economic growth and green entrepreneurship within sustainability. Sustainable economic growth is an economic growth model that does not put significant pressure on the prices of goods and services, ensures that resources are consumed at a level that does not adversely affect future generations, allows the conscious use of natural resources and does not significantly harm the environment. Green entrepreneurship is a new type of entrepreneurship that aims to generate and implement solutions to environmental problemsand promote social change to prevent environmental damage. Research shows a close relationship between green entrepreneurship and sustainable economic growth. This study aims to reveal the link between green entrepreneurship and sustainable economic growth. In the study,the conceptual research technique is used within the scope of the qualitative research method. Based on academic research and currentdata, the relationship between green entrepreneurship and sustainable economic growth is examined. As a result, the study emphasizes that humanity can reach a sustainable future by promoting environment oriented economic growth with green initiatives.

  • MakaleYayıncıda açık erişim2024
    EVALUATION OF NUTRITIONAL PREFERENCES OF SCHOOL-AGE CHILDREN AND PARENTS ATTITUDES TOWARDS CHILD NUTRITION: A CROSS-SECTIONAL STUDY; [AVALIAÇÃO DAS PREFERÊNCIAS NUTRICIONAIS DAS CRIANÇAS EM IDADE ESCOLAR E DAS ATITUDES DOS PAIS EM RELAÇÃO À NUTRIÇÃO INFANTIL: UM ESTUDO TRANSVERSAL]; [EVALUACIÓN DE LAS PREFERENCIAS NUTRICIONALES DE LOS NIÑOS EN EDAD ESCOLAR Y ACTITUDES DE LOS PADRES HACIA LA NUTRICIÓN INFANTIL: UN ESTUDIO TRANSVERSAL]

    Taşci, Seda Çelikel; Kırbaş, Zila Özlem; Erkılıç, Tuğçe Orkun; Demir, Demet

    Objective: This study aimed to examine the nutrition of school-age children and the influence of their parents. Method: The study involved 259 school-age children aged 9-12 and their volunteering parents from a province in Türkiye. A questionnaire was administered to the children questioning sociodemographic data and basic nutritional information, anthropometric measurements were taken, and the Parent Mealtime Action Scale was applied to their parents. The obtained data were analyzed in SPSS 26 program. Results: It was found that the snack consumption status of children was related to the income status of the family's daily fruit and vegetable consumption (p<0.01). It has been found that animal fat restricted diet is associated with growth status in children (p<0.01). It has been determined that the children's eating situation is related to the persistent behavior of parents (p<0.05). It has been found that children who do not consume chips at all are also fed restricted animal fats in their daily diet. It was determined that bagel/cereal consumption was also excessive in children in whom rewarding was applied excessively (p<0.05). Conclusion: As a result, it was determined that school-age children's own preferences in food choices, as well as the parent's behavior and educational status, and the family's income level also have a significant impact. It is thought that it will be beneficial to provide nutrition education to parents and children in order to develop the right eating habits in school-age children and to increase the level of nutrition knowledge.

    • SDG 2 · Açlığa Son
    • SDG 3 · Sağlık ve Kaliteli Yaşam
  • MakaleYalnız künye2024Scopus SJRQ2
    Investigation of emotion regulation skills, salivary apelin, and serotonin levels in children in Türkiye: a cross-sectional study

    Kırbaş, Zila Özlem; Bayraktar, Bülent; Odabaşı Aktaş, Elif

    Purpose: Little is known about the relationship between apelin and serotonin in emotion regulation. This study aimed to examine children’s emotional regulation skills and salivary apelin and serotonin levels. Methods: This is a cross-sectional study performed in Türkiye. The research was completed with the participation of 146 children, 8–10 years old, from the general population. Emotion Regulation Skills Scale for Children (CERS) was used to assess children’s levels of emotion regulation skills. Apelin and serotonin levels were examined by ELISA technique in saliva samples obtained from children. Results: A statistically significant correlation was found between the mean total score of the CERS and the mean apelin and serotonin levels (p ˂.01). We found that females had higher emotion regulation skills compared to males, older higher than younger ones (p ˂.01). The regression analysis results show that age and gender together explain 50.5% of the variance in CERS scores, while apelin and serotonin together explain 35.8% of the variance. When all four variables (age, gender, apelin, and serotonin) are included in the model, they explain 51.3% of the variance in CERS scores. Conclusion: Older age and female gender explained most of emotion regulations skills.Key points It was determined that the average salivary apelin and serotonin levels increased with increased age, and with increased age ERS also increased. More research is needed as this is the first time that the relationship between emotion regulation skills and serotonin and apelin levels has been examined.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus1OpenAlex1
    ScopusWeb of SciencePubMedİncele
  • MakaleYalnız künye2024Scopus SJRQ1
    Ultrasound assisted choline chloride-based deep eutectic solvent extraction of bioactive compounds from salsify (Tragopogon buphthalmoides (DC.) boiss. Var. Latifolius Boiss.): A Box–Behnken design approach for optimization

    Yilmaz, Özlem; Elbir Abca, Tuğba; Kamiloğlu, Aybike; Kutlu, Naciye

    This study aimed to investigate the ultrasound-assisted extraction of bioactive compounds from salsify using deep eutectic solvents (DESs) with different molar ratios. For this reason, total phenolic (TPC), total flavonoid (TFC) compounds, and antioxidant activities (1,1-diphenyl-2-picrilhydrazyl radical scavenging activity (DPPH•), and ferric reducing antioxidant power (FRAP)) of extracts prepared with DES were investigated with an experimental design and optimization study conducted for this purpose. An extraction time of 40.15 min was determined as the optimal condition. Under these conditions, a molar ratio of 3:1 (acetic acid:choline chloride) and a water ratio of 42.17 % provided the highest phenolic/flavonoid compounds and antioxidant activity. Correlations between water ratio, molar ratio, and sonication extraction time were determined using principal component analysis (PCA). In conditions where TPC, FRAP, and DPPH• were high according to PCA, it can be concluded that the extraction time, water ratio, and molar ratio are at high levels; contrarily, TFC is at a low level. In conclusion, ultrasound-assisted extraction using DES proved effective for salsify. Therefore, choline chloride-based DESs, can be recommended as environmentally friendly green solvents and an alternative to organic solvents for the extraction of bioactive compounds from salsify.

    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfScopus11WoS8OpenAlex10
    ScopusWeb of Scienceİncele
  • MakaleYalnız künye2024Scopus SJRQ3
    Boundedness in a attraction-repulsion chemotaxis system with nonlinear production

    Ayazoglu, Rabil

    We study the quasilinear attraction-repulsion chemotaxis system of parabolic-elliptic type ut = ∆u−χ∇·(u∇υ)+ξ∇·(u∇ω) with nonlinear production 0 = ∆υ −βυ +αus, 0 = ∆ω −δω +γur, subject to the homogeneous Neumann boundary conditions in a bounded domain Ω ⊂ ℝN (N ≥ 3) with smooth boundary. It is proved that for every α, β, δ, γ, χ, ξ > 0 and s ≥ N2,r > N−2/N s, there exists ξ∗ > 0 such that if ξ > ξ∗ and any sufficiently regular initial datum u0(x) ≥ 0, then the model has a unique global classical solution (u, υ, ω), which is bounded in Ω × (0, ∞).

  • MakaleYalnız künye2024Scopus SJRQ3
    Pollen morphology of Eremogone (Caryophyllaceae) in Türkiye

    Tokuşoğlu, Kader Varlik; Armağan, Meti̇N; Bülbül, Ali̇ Savaş

    The palynological characters of 17 taxa belonging to genus Eremogone Fenzl (Caryophyllaceae) from Türkiye were examined using light microscopy and scanning electron microscopy. Eremogone pollen in Türkiye is found to have an average size of 31.31 μm (26.62‒36.65 μm), pore sizes ranging from 6.52 to 9.24 μm, inter-pore distances ranging from 9.07 to 12.57 μm, pore numbers varying from 5 to 14 and 5‒30 nanoechini distributed in an area of 10 × 10 µm. The ornamentation was identified as nanoperforate, nanoechinate, or nanofaveolate surface elements in various combinations. Clustering analysis and Principal Component Analyses do not show clear groups, although more similar taxa were brought together through the analysis of pollen micromorphological data rather, the nanoechinate base width, nanoechinate length, and pore diameter length are the most valuable variables for separating the examined taxa.

  • EditoryalYalnız künye2024
    Preface

    Bayram, Nesrin Ecem; Kostic, Aleksandar Ž.; Gercek, Yusuf Can

  • MakaleYalnız künye2024Scopus SJRQ1
    The Role of Picturebooks in Supporting the Mathematical Knowledge of Preschool Teacher Candidates

    Güven Akdeniz, Dilşad

    Is children’s literature only beneficial to children? Or do the benefits of children’s literature also extend to the knowledge and mathematical skills of the teachers who employ it and reflect on it? This study seeks to investigate the role of picturebooks on the mathematical knowledge of preschool teacher candidates. For this purpose, in-depth examinations of how picturebooks can be used in teaching preschool mathematics and children’s literature. As well as the changes in the content knowledge of the teacher candidates, were done by conducting focus group interviews with teacher candidates. This is a qualitative case study consisting of focus group discussions in which high-level knowledge sharing and production can be achieved through interaction and associations. In the research, 11 picturebooks were discussed, and 8 teacher candidates participated in 6 focus group interviews lasting a total of 338 min throughout a 7 week period. The study’s findings have demonstrated that through children’s literature, teacher candidates’ misconceptions about measuring length can be revealed and eliminated without the need for another source, with discussions based on consciously and systematically selected picturebooks. Thus, it can be said that picturebooks act as a catalyst for the studies that aim to enhance the mathematical content knowledge of teacher candidates. The study has also observed that picturebooks can comprehensively address the fundamental concepts of length measurement.

    • SDG 4 · Nitelikli Eğitim
    AtıfScopus1WoS1OpenAlex1
    ScopusWeb of Scienceİncele
  • MakaleYalnız künye2024Scopus SJRQ3
    Exponential Convex Functions with Respect to s

    Kadakal, Mahir

    In this paper, we study the concept of exponential convex functions with respect to s and prove Hermite-Hadamard type inequalities for the newly introduced this class of functions. In addition, we get some refinements of the Hermite-Hadamard (HH) inequality for functions whose first derivative in absolute value, raised to a certain power which is greater than one, respectively at least one, is exponential convex with respect to s. Our results coincide with the results obtained previously in special cases.

    AtıfScopus1WoS2
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  • MakaleYalnız künye2024Scopus SJRQ2
    A new face presentation attack detection method based on face-weighted multi-color multi-level texture features

    Turhal, Uğur; Günay Yılmaz, Asuman; Nabiyev, Vasif

    Biometric data (facial, voice, fingerprint, and retinal scans, for example) are widely used in identification due to their unique and irreversible nature. Facial recognition technologies are employed in a wide range of applications due to their contactless nature and convenience. However, technological advancements and the availability of access to personal information have rendered these biometric systems susceptible to attacks utilizing fake faces. As a result, the issue of anti-spoofing has emerged as a critical one in the field of facial recognition. This study proposes a joint face presentation attack (FPA) detection method based on face-weighted multi-color multi-level LBP features extracted from the combination of device-dependent HSV and device-independent L*a*b* color spaces. The facial images were converted to HSV and L*a*b* color spaces. Three levels of regional LBP features were extracted from each color channel and then concatenated. Finally, a Multi-Color Multi-Level LBP (MCML_LBP) feature vector was obtained. In addition, the Face Weighted MCML_LBP feature vector was produced (FW_MCML_LBP) by adding the LBP histogram extracted from the central region of the normalized image. The feature vectors are used to train an SVM classifier after reducing their size using PCA. Twenty-five different test scenarios were subjected to experimentation on the CASIA and Replay-Attack databases. 2.11% EER and 0.19% HTER were achieved on CASIA (Overall) and Replay-Attack (Grandtest) databases, respectively, using the L*a*b color space and the proposed feature extraction method. The results of the study showed that the proposed method was successful in FPA detection compared to the state-of-the-art methods.

    AtıfScopus11WoS10OpenAlex10
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  • MakaleYalnız künye2024Scopus SJRQ1
    Objective Parameters in Attention Deficit Hyperactivity Disorder: Eye and Head Movements

    Yıldırım Demirdöğen, Esen; Akıncı, Mehmet Akif; Bozkurt, Abdullah; Turan, Bahadır; Esin, İbrahim Selçuk; Donbaloğlu, Mehmet Ali; Bingöl, İsa; Tümüklü Özyer, Gülşah; Kılıç, Uğur; Dursun, Onur Burak

    Objective: We aimed to evaluate eye and head movements, which are objective parameters in ADHD. Method: While the children were watching the course video task, which included the relevant (teacher and smart board) and irrelevant (any regions outside the relevant area) areas of interest, their eye movements were evaluated through eye tracking, and video recordings were made simultaneous. Head position estimation was made using through video recordings. The proportion of total fixation duration on areas of interest (PFDAOI) and saccade count, amplitude, velocity for eye movements, number of total head movements and angular change of head movement in x-y-z axes for head movements were compared. Results: Children with ADHD had lower PFDAOI on the relevant area, and had more saccade and head movements The angular change of head movement in the x-axis was higher in the ADHD group. Conclusion: In the assessment of ADHD, the eye and head movements may be particulary useful.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus4WoS4OpenAlex4
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  • Kitap BölümüYalnız künye2024
    Factors affecting tourists' sustainable tourism intention: A parallel mediation analysis

    Apak, Ömer Ceyhun; Ünlü, Hami

    AtıfScopus1
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