Sakarya University Journal of Science最新文献_第2页

Production Methods Effect on Nanosilica Properties 生产方法对纳米二氧化硅性能的影响

Sakarya University Journal of Science Pub Date : 2023-09-17 DOI: 10.16984/saufenbilder.1220994

Büşra Öztürk, A. Aydınoğlu, Afife Binnaz YORUÇ HAZAR

{"title":"Production Methods Effect on Nanosilica Properties","authors":"Büşra Öztürk, A. Aydınoğlu, Afife Binnaz YORUÇ HAZAR","doi":"10.16984/saufenbilder.1220994","DOIUrl":"https://doi.org/10.16984/saufenbilder.1220994","url":null,"abstract":"In this study, nanosilica was synthesized using colloidal silica, silica sand and TEOS raw materials. Rotary evaporator drying (R), Sol-gel (S) and titration (T) methods were used as synthesis method. At the same time, the contribution of different production techniques to the functionalization of silica and its effect on its mechanical properties were also investigated. Methacryloxypropyl trimethoxysilane was used as silane agent in silanation studies. Silica characterization was performed using X-ray diffraction, high resolution scanning electron microscopy, inductively coupled plasma-mass spectrometer Fourier transform infrared spectroscopy, Zetasizer and wettability measurement. The particle size of the silica particle size RE and S samples, which were determined in the SEM image, respectively, was 19 nm, 14 nm, and the T sample had an irregular structure, so the particle size could not be measured. In Zetasizer analysis, the particle size was measured as 107 nm, 181 nm, and 184 nm, respectively. Purities of silica powders were determined by ICP-MS analysis and their purity values were between 90-99%. Silanability of silica was evaluated with FT-IR and wettability measurements and T sample was obtained as a result. Thus, it is reported that the T sample will bind with more silane agents. In this article, the obtained silica powders were used as the supporting phase in dental composites and the effects of the used supporting phases on the mechanical and physical properties were investigated. As a result of these investigations, it was determined as RE-synthesized silica suitable for use in dental composites.","PeriodicalId":21468,"journal":{"name":"Sakarya University Journal of Science","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139339375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of the Dynamic Properties of SDOF and MDOF Shear Frames with Image Processing Technique 利用图像处理技术确定 SDOF 和 MDOF 剪力框架的动态特性

Sakarya University Journal of Science Pub Date : 2023-09-11 DOI: 10.16984/saufenbilder.1321819

Erdem Damcı, Ç. Şekerci

引用次数: 0

Effect of Borophene on the Electrochemical Performances of Li7P3S11 based All-Solid-State Lithium Sulfur Batteries 硼吩对基于 Li7P3S11 的全固态锂硫电池电化学性能的影响

Sakarya University Journal of Science Pub Date : 2023-09-11 DOI: 10.16984/saufenbilder.1336352

Çağrı Gökhan Türk, M. Tokur

{"title":"Effect of Borophene on the Electrochemical Performances of Li7P3S11 based All-Solid-State Lithium Sulfur Batteries","authors":"Çağrı Gökhan Türk, M. Tokur","doi":"10.16984/saufenbilder.1336352","DOIUrl":"https://doi.org/10.16984/saufenbilder.1336352","url":null,"abstract":"This study has investigated the effect of 2-dimensional (2D) beta borophene as a cathode additive for all-solid-state lithium-sulfur batteries. The comparisons have been carried out regarding the impact on ionic conductivity based on borophene content. Although the studies of borophene's contributions in the literature on the anode component, this study focuses on the cathode contribution for the first time. While MoS2 has been selected as the cathode active material, carbon black has been selected as the electrical conductor, and Li7P3S11 solid electrolyte has been synthesized as an ionic conductor in all-solid-state lithium-sulfur cells. Borophene has been synthesized from boron powder by the exfoliation method. As a cathode-active material, MoS2, containing sulfur, and its 2D material nature, eliminates many of the disadvantages that sulfur exhibits when used alone. To investigate the effect of borophene on ionic conductivity in all-solid-state lithium-sulfur cells, multicomponent composite cathodes were prepared in (MoS2 / Conductive Carbon / Li7P3S11 + Borophene) overall compositions. According to the results, the specific capacity of the cells is affected negatively, while the stability of the cell is affected positively when increased the Borophene amount.","PeriodicalId":21468,"journal":{"name":"Sakarya University Journal of Science","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139341159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrical Resistance, Stability and Mechanical Properties of PVC Composites Containing Graphite and Semiconductor for Sensor Technologies 用于传感器技术的含石墨和半导体的聚氯乙烯复合材料的电阻、稳定性和机械性能

Sakarya University Journal of Science Pub Date : 2023-09-02 DOI: 10.16984/saufenbilder.1185381

Anıl Eker, Bircan Dindar

{"title":"Electrical Resistance, Stability and Mechanical Properties of PVC Composites Containing Graphite and Semiconductor for Sensor Technologies","authors":"Anıl Eker, Bircan Dindar","doi":"10.16984/saufenbilder.1185381","DOIUrl":"https://doi.org/10.16984/saufenbilder.1185381","url":null,"abstract":"This study aimed to obtain a novel PVC-based composite that is conductive or semiconductor and especially flexible and to reveal its properties.The doping materials were graphite and ZnO. To create more homogenous composites, it is used a nonionic surfactant such as Tritone X-100. The electrical resistance of the materials in each test step was measured and tensile strength tests were also performed to evaluate mechanical properties. Nüve-TK252 Humidification, Schloeder SESD30000 Electrostatic Discharge (ESD), Hioki RM3548 electrical resistance, Nüve FN120 and FR590 Thermal Shock devices, ,Shimadzu EHF-LV020K2-020 for tensile testing and Thermo Scientific Apreo S (SEM) were used to characterize the samples. For the light test, was also used a solar simulator with 1000 W xenon lamp. As a result, it has been found that electrical resistance of materyale with high graphite levels without zinc oxide have greater stability. The electrical resistance of the materials with ZnO additive have decreased considerably, increased their conductivity, in special stimuli such as light and electricity. Thus, this novel semiconductor can be using as a sensor. P3G2Z (Higher PVC ratio) has a huge change in conductivity after electrostatic discharge. By the way, the highest difference in conductivity was also observed in P3G2Z. Under solar irradiation, it was observed that the resistance of the P2G3Z and P1G1Z composite materials decreased approximately 81 and 23 times, respectively. It proves that these materials have passed into the photosensitive semiconductor state. Obtaining electrical and mechanical data of new composites with doping of PVC polymer with graphite and zinc oxide nanoparticles at different rates will make a great contribution to the sensor, robot, automotive and defense industries. In conclusion, the outputs of this study, flexible, sensitized, conductive composites will offer new horizons for fields such as the sensor and actuator industries that drived system control mechanisms.","PeriodicalId":21468,"journal":{"name":"Sakarya University Journal of Science","volume":"95 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139343314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanism of Tunable Band Gap of Halide Cubic Perovskite CsPbBr3−xIx 卤化物立方包晶 CsPbBr3-xIx 的可调带隙机理

Sakarya University Journal of Science Pub Date : 2023-08-31 DOI: 10.16984/saufenbilder.1270814

Veysel Çelik

引用次数: 0

In silico Characterization of Esophageal Cancer Predominant Genes 食管癌优势基因的硅学特征描述

Sakarya University Journal of Science Pub Date : 2023-08-28 DOI: 10.16984/saufenbilder.1274006

Gizem KÖPRÜLÜLÜ KÜÇÜK

{"title":"In silico Characterization of Esophageal Cancer Predominant Genes","authors":"Gizem KÖPRÜLÜLÜ KÜÇÜK","doi":"10.16984/saufenbilder.1274006","DOIUrl":"https://doi.org/10.16984/saufenbilder.1274006","url":null,"abstract":"Cancer is an important health problem nowadays. One of these problems is esophageal cancer (EC). The 7th most common cancer is EC worldwide. Rhomboid-related biomarkers play an important role in EC. Analysis of such biomarkers can yield important insights into the role of rhomboid 5 Homolog 2 (RHBDF2) in cancer pathology. The characterization of genes was made in silico tools such as STRING, SWISS-MODEL, UCSF Chimera ver 1.15, ProtParam, and GeneCards. The protein interactions string of the rhomboid 5 homologs 2 (RHBDF2) gene was obtained from STRING. Epidermal growth factor (EGF), and ADAM Metallopeptidase Domain 17 (ADAM17) genes were detected as related genes. Amino acid sequences of these genes were obtained from NCBI. Homology models, and Ramachandran graphic of RHBDF2, ADAM17, and EGF genes were created by the SWISS-MODEL database and UCSF Chimera ver 1.15 program. Physicochemical properties of RHBDF2, ADAM17, and EGF genes were calculated by the ProtParam database. Subcellular localizations were detected by the GeneCards server. As a result of this study, genomic and subcellular localization of RHBDF2, ADAM17, and EGF genes were obtained. Amino acid sequences, 3D- protein structures, and physicochemical properties were detected.","PeriodicalId":21468,"journal":{"name":"Sakarya University Journal of Science","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Awareness and Knowledge Levels of Building Information Modeling Among Architecture Students: A Survey-Based Study 建筑专业学生建筑信息建模意识与知识水平的调查研究

Sakarya University Journal of Science Pub Date : 2023-08-28 DOI: 10.16984/saufenbilder.1329722

Mehmet Ümit Meterelli̇yoz

{"title":"The Awareness and Knowledge Levels of Building Information Modeling Among Architecture Students: A Survey-Based Study","authors":"Mehmet Ümit Meterelli̇yoz","doi":"10.16984/saufenbilder.1329722","DOIUrl":"https://doi.org/10.16984/saufenbilder.1329722","url":null,"abstract":"The present study aims to investigate the awareness of Building Information Modeling (BIM) in Turkey from students' perspectives. While numerous studies in the literature have explored BIM awareness in the industry, research specifically focused on students is scarce. Thus, this study aims to contribute a new and current perspective to the existing literature by measuring student awareness based on empirical evidence. By doing so, it intends to provide valuable insights for future research and curriculum development. The survey was conducted as part of the university's BIM course. The research utilized the results of a survey conducted in 2022 involving the participation of 34 fourth-year students in the architecture program. The findings indicate that students have heard about and even utilized the concept of Building Information Modeling, but their knowledge of this technological development needs to be more comprehensive. To assess the students' BIM awareness level, the survey was designed to explore their understanding and proficiency in using BIM. The results revealed that students need to learn more about the technological elements and components that constitute BIM. This limitation hampers their potential to utilize BIM in practice effectively. The outcomes of this study underscore the necessity for architecture education programs to adopt a more comprehensive approach to BIM. Developing educational and informational strategies that enhance students' knowledge of BIM is imperative. The findings of this study serve as a valuable resource for increasing BIM awareness in architectural education and facilitating students' adaptation to this technology. Given the significance of BIM in the Architecture, Engineering, and Construction (AEC) industry, gaining competence in this field will provide students with a significant advantage in their future professional endeavors.","PeriodicalId":21468,"journal":{"name":"Sakarya University Journal of Science","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74000218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and Structural Investigations of 1, 2-bis(2-ethoxybenzylidene)hydrazine 1,2 -双(2-乙氧基苄基)联胺的合成及结构研究

Sakarya University Journal of Science Pub Date : 2023-08-25 DOI: 10.16984/saufenbilder.1227659

Sevgi KANSIZ

引用次数: 0

Experimental and Numerical Investigation of Flexural Properties of Solid Wood Materials Reinforced with Various FRP 不同FRP增强实木材料抗弯性能的实验与数值研究

Sakarya University Journal of Science Pub Date : 2023-08-25 DOI: 10.16984/saufenbilder.1064612

Şemsettin KILINÇARSLAN, Yasemin ŞİMŞEK TÜRKER

{"title":"Experimental and Numerical Investigation of Flexural Properties of Solid Wood Materials Reinforced with Various FRP","authors":"Şemsettin KILINÇARSLAN, Yasemin ŞİMŞEK TÜRKER","doi":"10.16984/saufenbilder.1064612","DOIUrl":"https://doi.org/10.16984/saufenbilder.1064612","url":null,"abstract":"Wood material is destroyed over time by biotic and abiotic factors. Many of the historical buildings are made of wooden materials and these materials can degrade over time with the effect of environmental conditions. In order to ensure the sustainability of these buildings with historical value, they need to be repaired and strengthened over time. In this study, 20x20x360 mm wood specimens of Ash tree species were strengthened with carbon, basalt and glass based FRP materials. The flexural properties of the reference sample without wrapping and the samples reinforced with carbon, basalt and glass based FRP material were examined. For this purpose, at first three-point bending test has been performed, and then obtained results are compared with the numerical ones found from finite element analysis software ANSYS. As result, a good agreement has been found between experimental and numerical results. As a result of the flexural tests, the load-displacement curves, values of flexural strength and values of modulus of elasticity the samples were determined. In this study, it was determined that the highest load carrying capacity value belongs to the sample reinforced with carbon-based FRP polymers.","PeriodicalId":21468,"journal":{"name":"Sakarya University Journal of Science","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135236040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Obtaining High Temperature Stable Sepiolite via Optimization of Acid Treatment Conditions 酸处理条件优化制备高温稳定海泡石

Sakarya University Journal of Science Pub Date : 2023-08-25 DOI: 10.16984/saufenbilder.1310298

İlknur KARA

引用次数: 0