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Influence of acrylamide monomer addition to the acrylic denture-base resins on mechanical and physical properties

International Journal of Oral Science 2013年第4期5卷 229-235页

作者： elif aydogan ayaz Rukiye Durkan Department of Prosthodontics Faculty of DentistryKaradeniz Technical University

The aim of the study was to evaluate the effect of adding acrylamide monomer （AAm） on the characterization, flexural strength, flexural modulus and thermal degradation temperature of poly（methyl methacrylate）（PMMA） denture-base resins. Specimens （n= 10） were fabricated from a conventional heat-activated QC-20 （Qc-） and a microwave heat-activated Acron MC （Ac-） PMMA resins. Powder/ liquid ratio followed the manufacturer＇s instructions for the control groups （Qc-c and Ac-c） and for the copolymer groups, the resins were prepared with 5% （-5）, 10% （- 10）, 15% （- 15） and 20% （-20） acrylamide contents, according to the molecular weight ratio, respectively. The flexural strength and flexural modulus were measured by a three-point bending test. The data obtained were statistically analyzed by Kruskal-Wallis test （a=O.05） to determine significant differences between the groups, The chemical structures of the resins were characterized by the nuclear magnetic resonance spectroscopy. Thermal stabilities were determined by thermogravimetric analysis （TGA） with a heating rate of 10 ~***-1 from 35 ~C to 600 ~C. Control groups from both acrylic resins showed the lowest flexural strength values. Qc-15 showed significant increase in the flexural strength when compared to Qc-c （P〈O.01）. Ac-10 and Ac-15 showed significance when compared to Ac-c （P〈O.01）. Acrylamide incorporation increased the elastic modulus in Qc-10, Qc-15 and Qc-20 when compared to Qc-c （P〈0.01）. Also significant increase was observed in Ac-10, Ac-15 and Ac-20 copolymer groups when compared to Ac-c （P〈0.01）. According to the 1H-nuclear magnetic resonance （NMR） results, acrylamide copolymerization was confirmed in the experimental groups. TGA results showed that the thermal stability of PMMA is increased by the insertion of AAm.

关键词： acrylamide denture resin nuclear magnetic resonance poly(methyl methacrylate) thermogravimetric analysis three-point bending test

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Relationship between the use of smart medical services and mental health status

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World Journal of Psychiatry 2025年第1期15卷 21-25页

作者： elif Sarac Ministry of National Defense General Directorate of Management ServicesAnkara 06000Türkiye

In this editorial,I comment on the article by Zhang et *** emphasize the importance of the topic,I discuss the relationship between the use of smart medical devices and mental *** medical services have the potential to positively influence mental health by providing monitoring,insights,and ***,they also come with challenges that need to be *** the primary purpose for which individuals use these smart tech-nologies is essential to tailoring them to specific mental health needs and prefe-rences.

关键词： Smart devices Medical service Usage People Relationship Mental health status

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Effect of gamification applications on success of dentistry students

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World Journal of Methodology 2025年第1期15卷 80-87页

作者： Hatice Ahsen Deniz elif Polat Balkan Burak İncebeyaz Kıvanç Kamburoğlu Department of Dentomaxillofacial Radiology Ankara University Faculty of DentistryAnkara 06500Türkiye

BACKGROUND Gamification,the use of game materials in education,has been used in several scientific fields,and studies have demonstrated its effectiveness in student *** To evaluate whether the success of 4th-and 5th-grade dentistry students increases when using the gamification applications Kahoot!and *** An experimental design was used to measure the effect of gamification applications on students who were taught using the traditional *** this purpose,Mentimeter and Kahoot!applications were used in this experimental *** groups of 4th-and 5th-grade students were formed:Mentimeter,Kahoot!,and control *** effect of gamification applications on achievement was evaluated by administering a post-test to these groups after the instructional ***-way analysis of variance and t-tests were used for statistical *** A total of 35.5%of the students were in the Mentimeter group,29.8%in the Kahoot!group,and 34.6%in the control *** the total number of students,54.8%were female and 45.2%were male,while 52.2%were 5th-grade students and 47.8%were 4th-grade *** overall grade point average was found to be 66.65(range,24-100).There was a statistically significant difference in average success scores between students of different groups(P=0.003<0.05)and grades(P=0.036<0.05).The average success score was the highest in the Mentimeter group(71.64)and the lowest in the Kahoot!group(62.15).In the control group,this score was *** average success score was higher for students in the 5thgrade(68.16)and for female students(68.84).CONCLUSION Gamification has a great potential in the education of dentomaxillofacial radiology *** outperformed both the Kahoot!and the traditional method in terms of average student success rates.

关键词： Gamification Mentimeter Kahoot! Education Dentistry

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ISOTROPIC WEYL MANIFOLD WITH A SEMI-SYMMETRIC CONNECTION

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Acta Mathematica Scientia 2009年第1期29卷 176-180页

作者： elif zkara Canfes Department of Mathematics Technical University of Istanbul

In this work,it is proved that every isotropic Weyl manifold with a semi- symmetric connection is locally conformal to an Einstein manifold with a semi-symmetric connection.

关键词： Weyl manifold semi-symmetric connection Einstein manifold isotropic manifold sectional curvature

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Deep neural network ensembles for remote sensing land cover and land use classification

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International Journal of Digital Earth 2021年第12期14卷 1868-1881页

作者： Burak Ekim elif Sertel Institute of Informatics Satellite Communication and Remote Sensing ProgramIstanbul Technical UniversityIstanbulTurkey Department of Geomatics Engineering Istanbul Technical UniversityIstanbulTurkey

With the advancement of satellite technology,a considerable amount of very high-resolution imagery has become available to be used for the Land Cover and Land Use(LCLU)classification task aiming to categorize remotely sensed images based on their semantic ***,Deep Neural Networks(DNNs)have been widely used for different applications in the field of remote sensing and they have profound impacts;however,improvement of the generalizability and robustness of the DNNs needs to be progressed further to achieve higher accuracy for a variety of sensing geometries and *** address this problem by deploying three different Deep Neural Network Ensemble(DNNE)methods and creating a comparative analysis for the LCLU classification *** enables improvement of the performance of DNNs by ensuring the diversity of the models that are ***,enhances the generalizability of the models and produces more robust and generalizable outcomes for LCLU classification *** experimental results on NWPU-RESISC45 and AID datasets demonstrate that utilizing the aggregated information from multiple DNNs leads to an increase in classification performance,achieves state-of-the-art,and promotes researchers to make use of DNNE.

关键词： Classification convolutional neural networks(CNN) deep neural network ensembles(DNNE) land cover and land use(LCLU) remote sensing

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Antibiotic ciprofloxacin removal from aqueous solutions by electrochemically activated persulfate process:Optimization,degradation pathways,and toxicology assessment

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Journal of Environmental Sciences 2024年第9期143卷 85-98页

作者： elif Yakamercan Ahmet Aygün Halis Simsek Environmental Engineering Department Bursa Technical UniversityBursaTurkey Agricultural and Biological Engineering Department Purdue UniversityWest LafayetteINUSA

Ciprofloxacin(CIP)is a commonly used antibiotic in the fluoroquinolone group and is widely used in medical and veterinary medicine disciplines to treat bacterial *** CIP is discharged into the sewage system,it cannot be removed by a conventional wastewater treatment plant because of its recalcitrant *** this study,boron-doped diamond anode and persulfate were used to degrade CIP in an aquatic solution by creating an electrochemically activated persulfate(EAP)*** added to the system as a coactivator and the process was called EAP+*** effects of independent variables,including pH,Fe^(2+),persulfate concentration,and electrolysis time on the systemwere optimized using the response surface *** results showed that the EAP+Fe process removed 94%of CIP under the following optimum conditions:A pH of 3,persulfate/Fe^(2+)concentration of 0.4 mmol/L,initial CIP concentration 30 mg/L,and electrolysis time of 12.64 *** removal efficiency was increased from 65.10%to 94.35%by adding Fe^(2+)as a transition *** degradation products,7 pathways,and 78 intermediates of CIP were studied,and three of those intermediates(m/z 298,498,and 505)were *** toxicological analysis based on toxicity estimation software results indicated that some degradation products of CIP were toxic to targeted animals,including fathead minnow,Daphnia magna,Tetrahymena pyriformis,and *** optimumoperation costswere similar in EAP and EAP+Fe processes,approximately 0.54€/m^(3).

关键词： Ciprofloxacin Response surface methodology Electrochemically activated persulfate Electrooxidation

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Towards overcoming data scarcity in materials science:unifying models and datasets with a mixture of experts framework

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npj Computational Materials 2022年第1期8卷 2322-2330页

作者： Rees Chang Yu-Xiong Wang elif Ertekin Department of Materials Science and Engineering University of Illinois at Urbana-Champaign1304 West Green StreetUrbana61801ILUSA Department of Computer Science University of Illinois at Urbana-Champaign201 North Goodwin AvenueUrbana61801ILUSA Materials Research Laboratory University of Illinois at Urbana-Champaign104 South Goodwin AvenueUrbana61801ILUSA Department of Mechanical Science and Engineering University of Illinois at Urbana-Champaign1206 West Green StreetUrbana61801ILUSA

While machine learning has emerged in recent years as a useful tool for the rapid prediction of materials properties,generating sufficient data to reliably train models without overfitting is often *** overcoming this limitation,we present a general framework for leveraging complementary information across different models and datasets for accurate prediction of data-scarce materials *** approach,based on a machine learning paradigm called mixture of experts,outperforms pairwise transfer learning on 14 of 19 materials property regression tasks,performing comparably on four of the remaining *** approach is interpretable,model-agnostic,and scalable to combining an arbitrary number of pre-trained models and datasets to any downstream property prediction *** anticipate the performance of our framework will further improve as better model architectures,new pre-training tasks,and larger materials datasets are developed by the community.

关键词： prediction mixture property

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Bergamottin reduces liver damage by suppressing inflammation, endoplasmic reticulum and oxidative stress in cafeteria diet-fed mice

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Food Bioscience 2023年第2期52卷 290-297页

作者： Ebru Yazıcı elif Sahin elif Alvuroglu Esin Yulug Ahmet Mentese Deparment of Obesity Diabetes and Atherosclerosis MetabolismGraduate School of Health SciencesKaradeniz Technical University61080TrabzonTurkiye Deparment of Medical Biochemistry Graduate School of Health SciencesKaradeniz Technical University61080TrabzonTurkiye Deparment of Histology ad Embrylogy Faculty of MedicineKaradeniz Technical University61080TrabzonTurkiye Deparment of Medical Biochemistry Karadeniz Technical University61080TrabzonTurkiye

Cafeteria diet is known to induce excessive endoplasmic reticulum stress(ERS),oxidative stress(OS),and inflammation that could cause metabolic changes and liver ***(BGM)is a natural furanocoumarin that is known to have various biological *** present study,for the first time,assessed the reducing effect of BGM on the development of liver damage in cafeteria diet fed mice.48 male C57BL/6 mice were fed an experimental diets diet for 16 weeks and BGM(0.05 mg/kg and 0.22 mg/kg)was administered for the last four *** serum samples and liver homogenates were assessed for markers of ERS,OS,and ***,histopathological analyzes were *** study demonstrated that the CAF diet caused metabolic changes,ERS,OS,and inflammation in serum and liver ***,BGM exerts anti-oxidant,anti-ER stress anti-inflammatory effects in CAF-induced liver ***,BGM may potentially be a novel therapeutic compound to ameliorate liver damage.

关键词： Bergamottin Cafeteria diet ER stress Inflammation Liver damage Oxidative stress

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Kinematic and morphometric evidence for recent reactivation of the Kale-Yeşilyurt fault zone within the East Anatolian Fault System

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Journal of Mountain Science 2024年第12期21卷 4149-4176页

作者： elif AKGÜN Fırat University Department of Geological Engineering Elazığ23119Türkiye

The Kale-Yeşilyurt Fault Zone(KYFZ)exhibits recent tectonic reactivation,which is critical for understanding regional seismicity and the geodynamic evolution of the East Anatolian Fault System(EAFS).This study integrates kinematic and morphometric analyses to explore the reactivation processes along the *** analysis,incorporating fault-slip data and stress inversion,reveals complex deformation patterns characterized by strike-slip and extensional movements,with NE-SW trending minimum stress *** 6,2023,earthquake sequence highlighted significant stress accumulation along the Kale-Yeşilyurt and Göksun *** and morphometric analyses,including mountain front sinuosity(Smf)and drainage basin analysis,suggest variable uplift rates and tectonic forces,with an asymmetric westward-directed uplift along the ***-HC index analysis underscores rapid uplift,particularly in the western basin,signaling ongoing tectonic and geomorphic *** normalized channel steepness index(Ksn)values reveal variations in erosion rates,providing insight into regional uplift patterns and knickpoint *** morphometric indicators collectively point to high tectonic activity along the Yeşilyurt segment,the Kale segment exhibits particularly intense activity with a dominant normal fault *** 2020 Sivrice earthquake and the 2023 earthquake doublet further emphasize the structural complexity of the fault system and underscore the KYFZ’s pivotal role in the active tectonics of the *** research incorporating advanced geospatial technologies is vital for improving our understanding of tectonic processes,mitigating earthquake hazards,and enhancing seismic risk assessments.

关键词： Kinematic analyses Morphometric analyses Kale-Yeşilyurt Fault Zone(KYFZ) East Anatolian Fault System(EAFS)

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Sensitive Spectrofluorimetric Method of Analysis for Gabapentin in Pure and Pharmaceutical Preparations

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Chinese Journal of Chemistry 2011年第3期29卷 562-566页

作者： Ulu, Sevgi Tatar Kel, elif Department of Analytical Chemistry Faculty of Pharmacy Istanbul University 34416 Istanbul Turkey

Highly sensitive spectrofluorimetric method was developed and validated for the determination of gabapentin in pure and pharmaceutical preparations. The method was based on nucleophilic substitution reaction of gabapentin with 4-fluoro-7-nitrobenzofurazan （NBD-F） in an alkaline medium （pH 9.5） to form a highly fluorescent derivative that was measured at 521 nm after excitation at 458 rim. The factors affecting the reaction was carefully studied and optimized. The method was successfully validated for linearity, limit of detection, limit of quantification, accuracy, precision, robustness and specificity. Under the optimized conditions, linear relationship with good correlation coefficient （0.9998） was found between the relative fluorescence intensity and gabapentin concentration in the range of 10--100 ng·mL^-1. The limit of detection and limit of quantification were 0.43 and 1.30 ng·mL ^-1, respectively. The proposed method was successfully applied to the determination of gabapentin in its pharmaceutical capsules. The results obtained by the proposed method were comparable with those obtained by the official method. Statistical comparison by t- and F- tests revealed that there was no significant difference between the results of the two methods with respect to mean values and standard deviations at the 95% confidence level.

关键词： gabapentin NBD-F spectrofluorimetric method derivatization determination

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