WoS İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14627/6
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Article Citation - WoS: 3Citation - Scopus: 3TiO2@ZIF-8 Hybrid as a Type II Heterojunction Photocatalyst:Adsorption/Photocatalytic Properties, Kinetics, and Effect of Humidity(Springernature, 2025) Okte, A. Neren; Tuncel, DuyguTiO2@ZIF-8 hybrid and its humidified forms are synthesized as type 2 heterojunction systems using a facile sol-gel method at different relative humidity (RH) conditions. The hybrids' surface characteristics and optical properties are thoroughly examined, followed by investigations into adsorption capacities and photocatalytic activities using anionic-methyl orange (MO) and cationic-methylene blue (MB) dyes. TiO2@ZIF-8 hybrid generates a mesoporous structure with a higher surface area (135.6 m2 g-1) than bare TiO2 (40.1 m2 g-1). Band gap energies of TiO2@ZIF-8 (3.00 eV) and humidified hybrids (2.95-2.91 eV) decrease compared to the individual phases of TiO2 (3.08 eV) and ZIF-8 (4.9 eV). XPS analysis verifies the electron donation from ZIF-8 to TiO2. Adsorptions of MO and MB differ depending on the affinities of MO or MB's functional groups on the TiO2@ZIF-8 and humidified hybrids. TiO2@ZIF-8 demonstrates 98.7% MO and 89.5% MB degradations within 100 min irradiation. Dark adsorption studies follow Langmuir model with Langmuir constants of KL = 0.445 L mg-1 for MO in the presence of TiO2@ZIF-8 and KL = 0.409 L mg-1 for MB in the presence of TiO2@ZIF-8 (84% RH). Meanwhile, pseudo-second-order kinetic model is applicable for dark experiments with rate constants of k2 = 0.918 g mg-1 min-1 for MO in the existence of TiO2@ZIF-8 and k2 = 0.917 g mg-1 min-1 for MB in the existence of TiO2@ZIF-8 (84% RH). Under irradiation, TiO2@ZIF-8 (84% RH) has higher first-order rate constant 'k' values for both MO (0.0134 min-1) and MB (0.0146 min-1) relative to that of TiO2@ZIF-8 (0.0129 min-1 for MO and 0.0112 min-1 for MB). Based on Langmuir-Hinshelwood model, TiO2@ZIF-8 (84% RH)) shows the highest adsorption coefficients (K) of 0.164 L mg-1 for MO and 0.192 L mg-1 for MB and rate constants (k) of 0.197 mg L-1 min-1 for MO and 0.182 mg L-1 min-1 for MB. Notably, the hybrids maintain high stability and photocatalytic efficiency after four consecutive degradation cycles, highlighting their potential for sustainable environmental remediation.Article Citation - WoS: 3Qualitative and Artificial Intelligence-Based Sentiment Analysis of Turkish Twitter Messages Related To Autism Spectrum Disorders(Springernature, 2023) Göksel, Pelin; Oban, Volkan; Dikec, Gul; Usta, Mirac BarisBackground: The aim of our study was to conduct an emotional analysis of Turkish Twitter messages related to autism spectrum disorders (ASD). Methods: An emotion analysis was performed using quantitative and qualitative analysis methods on Turkish Twitter messages shared between November 2021 and January 2022 that contained the words "autism" and "autistic." Results: It was found that 81.5% of the 13,042 messages that constituted the sample of this study contained neutral emotions. The most frequently used words in Twitter messages were autism, a, universe, strong, patience, warriors, and happy. The qualitative analysis revealed three main themes. These themes were: "experiences," "informing society and awareness," and "humiliation." Conclusion: In this study, it was found that Turkish Twitter messages related to autism, which were analyzed using artificial intelligence-based emotion analysis, often contained neutral emotions. While the content of these messages, often shared by parents, was related to experiences, and the messages shared by pediatric psychiatrists and rehabilitation center employees were informative in nature, it was determined that the word "autism" was used to insult, which is outside of its medical meaning.Article Citation - WoS: 4Effect of Multileaf Collimator Leaf Position Error Determined by Picket Fence Test on Gamma Index Value in Patient-Specific Quality Assurance of Volumetric-Modulated Arc Therapy Plans(Springernature, 2021) Ceylan, Cemile; Inal, Serpil Yondem; Senol, Elif; Yilmaz, Berrin; Sahin, SevimAim The correlation between the MLC QA (IBA Dosimetry, Germany) results of the picket fence test created with intentional errors and the patient's quality assurance (QA) evaluation was investigated to assess the impact of multileaf collimator (MLC) positioning error on patient QA. Materials and methods The picket fence, including error-free and intentional MLC errors, defined in Bank In, Bank Out, and Bank Both were analyzed using MLC QA. The QA of 15 plans consisting of stereotactic radiosurgery (SRS), stereotactic body radiotherapy (SBRT), and conventionally fractionated volumetric-modulated arc therapy (VMAT) acquired with electronic portal imaging devices (EPID) was evaluated in the presence of error-free and MLC errors. The QA of plans were analyzed with 2%/2 mm and 3%/3 mm criteria. Results The passing rates of the picket fence test were 97%, 92%, 91%, and 87% for error-free and intentional errors. The criterion of 3%/3 mm wasn't able to detect an MLC error for either SRS/SBRT or conventionally fractionated VMAT. The criterion of 2%/2mm was more sensitive to detect MLC error for the conventionally fractionated VMAT than SRS/SBRT. While only two of SBRT plans had <90%, four of conventionally fractionated VMAT plans had a <90% passing rate. Conclusion We found that the systematic MLC positioning errors defined with picket fence have a smaller but measurable impact on SRS/SBRT than the VMAT plan for a conventionally fractionated and relatively complex plan such as head and neck and endometrium cases.Article Citation - WoS: 10Assessment of the Effectiveness of Patient Education and Interviews in Improving Medication Adherence of Renal Transplant Recipients(Springernature, 2022) Aksit, Naile; Ozbas, Ayfer; Akinci, SerkanBackground Non-compliance with immunosuppressive drugs has been reported as the most significant cause of graft loss. Since non-compliance with immunosuppressive drugs is preventable, certain approaches based on the risk factors and causes of non-compliance can help eliminate this problem. Aims The purpose of this study is to assess the effectiveness of patient education and interviews in improving medication adherence of renal-transplant recipients. Materials and methods This study was designed as a randomized controlled trial. Using the G*Power program, the sample size was calculated as 60 subjects, with 30 in both the intervention group and control group. Data collection tools included a patient information form, a pretest-posttest, a drug monitoring form for kidney transplant patients, the Immunosuppressive Therapy Adherence Scale, measurement of tacrolimus blood levels, and a training booklet. Results The mean knowledge score in the intervention group was 12.17 +/- 3.39 at baseline, and it increased to 20.73 +/- 1.57 after the intervention. The mean scores on the Immunosuppressant Therapy Adherence Scale were 11.67 +/- 0.55 and 10.70 +/- 0.99 in the intervention group and control group, respectively. There was a statistically significant difference between the pre- test and post-test means on the Immunosuppressant Therapy Adherence Scale in the intervention group. The mean Immunosuppressant Therapy Adherence Scale score was higher in the intervention group. In the measurement of tacrolimus blood levels, medication adherence was found the be higher in the intervention group. The difference between the groups was statistically significant. There was a positive correlation between the tacrolimus blood levels and the Immunosuppressant Therapy Adherence Scale scores in both groups. Conclusions To conclude, our results have demonstrated that patient education and interviews improve immunosuppressant medication adherence in renal transplant recipients. Using direct or indirect methods proved similar outcomes, suggesting that both evaluation methods are safe.