Journal of Advanced Applied Sciences最新文献

The Structural Examination of Fe/(Cu/Nb)/MgB2 Multifilament Wires During Cold Forming Process 铁/(铜/铌)/MgB2 多丝在冷成型过程中的结构检验

Journal of Advanced Applied Sciences Pub Date : 2024-05-06 DOI: 10.61326/jaasci.v3i1.127

D. Avcı, H. Yetiş, F. Karaboğa, I. Belenli

{"title":"The Structural Examination of Fe/(Cu/Nb)/MgB2 Multifilament Wires During Cold Forming Process","authors":"D. Avcı, H. Yetiş, F. Karaboğa, I. Belenli","doi":"10.61326/jaasci.v3i1.127","DOIUrl":"https://doi.org/10.61326/jaasci.v3i1.127","url":null,"abstract":"In this study, we have successfully produced a Fe-sheathed 6+1 multifilament wire using Cu/Nb/MgB2 monocore wires. The mono filament wire was prepared using Mg+2B powder mixture by powder-in-tube method without any intermediate heat treatment. The powder mixture of the amorphous nano boron (PVZ Nano Boron, purity of 98.5%, particle sizes < 250 nm) and high purity Mg powder (PVZ Mg, purity of 99%, particle size 74µm) were used. The multifilament wire was produced using groove rolling and cold drawing machines. The geometrical form of the filaments was examined using wire pieces taken from the wire at different steps throughout the production process. Finally, the multifilament wires produced in two different diameters of 1.02 mm and 0.82 mm were investigated in terms of filament uniformity, crack formation, surface roughness, and electrical transport properties. The structural examination was done on Nb filaments after the Fe and Cu sheaths were etched using HCl and HNO3 solution. The I – V measurements of the multifilament wires heat treated at 650 °C for 15, 30, 45, 60, and 240 minutes, and 700 °C for 60 minutes were carried out for the applied current up to 1 A at 25 K under various external magnetic field.\u0000","PeriodicalId":507374,"journal":{"name":"Journal of Advanced Applied Sciences","volume":"58 41","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141009388","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

Purity Detection of Some Liquids by Using Reflection Values Based on Metamaterial 利用基于超材料的反射值检测某些液体的纯度

Journal of Advanced Applied Sciences Pub Date : 2024-05-06 DOI: 10.61326/jaasci.v3i1.108

Sanam Movazzafgharehbagh, Faruk Karadağ

引用次数: 0

Theoretical Investigation of Mechanical and Electronic Properties of Hexagonal BaB2 六方 BaB2 机械和电子特性的理论研究

Journal of Advanced Applied Sciences Pub Date : 2024-05-06 DOI: 10.61326/jaasci.v3i1.100

C. Parlak

{"title":"Theoretical Investigation of Mechanical and Electronic Properties of Hexagonal BaB2","authors":"C. Parlak","doi":"10.61326/jaasci.v3i1.100","DOIUrl":"https://doi.org/10.61326/jaasci.v3i1.100","url":null,"abstract":"A comprehensive investigation of the electronic and mechanical properties in the hexagonal BaB2 binary system using state of the art first-principles computational techniques is critical for an in-depth understanding of the fundamental properties unique to this binary system. In this context, we derived elastic constants using the metric-tensor formulation, which allowed us to find important mechanical properties such as Bulk Modulus, Shear Modulus, and Vickers's hardness which are fundamental mechanical quantities. Also, this research includes a detailed analysis of the electronic band structures and a study comparison of Fermi surface topologies. The charge density at the Fermi level (N(EF)), which is very important in superconductivity theories, was found to be 1.43 states/eV.uc. Furthermore, we have explored whether there exists a close relationship between these properties and the superconducting behavior of the BaB2 material. Nevertheless, our calculations unequivocally demonstrate that the information derived from electronic band structures and Fermi surfaces alone is insufficient for a comprehensive explanation of the superconductivity phenomenon observed in such materials.\u0000","PeriodicalId":507374,"journal":{"name":"Journal of Advanced Applied Sciences","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141007462","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

Deuteron Optical Model Calculations for Elastic and Inelastic Reactions on 14N, 16O, 27Al Target Nuclei 关于 14N、16O、27Al 靶核弹性和非弹性反应的氘核光学模型计算

Journal of Advanced Applied Sciences Pub Date : 2023-12-18 DOI: 10.61326/jaasci.v2i2.112

H. Büyükuslu

引用次数: 0

New Crystal Photodiode Combination for Environmental Radiation Measurement 用于环境辐射测量的新型晶体光电二极管组合

Journal of Advanced Applied Sciences Pub Date : 2023-12-18 DOI: 10.61326/jaasci.v2i2.103

I. Tapan, Fatma Kocak

引用次数: 0

Non-Destructive Testing Using Transmission Line-Based Microwave Sensors 使用基于传输线的微波传感器进行无损检测

Journal of Advanced Applied Sciences Pub Date : 2023-12-18 DOI: 10.61326/jaasci.v2i2.109

Sanam Movazzafgharehbagh, Faruk Karadağ

{"title":"Non-Destructive Testing Using Transmission Line-Based Microwave Sensors","authors":"Sanam Movazzafgharehbagh, Faruk Karadağ","doi":"10.61326/jaasci.v2i2.109","DOIUrl":"https://doi.org/10.61326/jaasci.v2i2.109","url":null,"abstract":"In this study, some types of antennas and metamaterial structures have been designed and produced with the aim of determining and detecting ionized chlorine of sea sand in concrete. The first structure has a Loop-like resonator with the sample, the second structure has a Bowtie-shaped resonator with the sample and the third structure has double loop resonators on both sides of concrete samples also non-destructive method is applied for all structures. Different samples of concrete are produced with different proportions of ionized sea sand. Electrical properties of concrete samples for all structures are investigated in the frequency range of 1-9 GHz. The structures are designed in the CST Microwave Studio program. Also, the simulation study of the designed structures shows that the most important resonance frequency changes, considering the dielectric constant of concrete samples, for the Loop-like structure occur in the 1-8 GHz, Bowtie-shaped structure in 1-4 GHz and double Loop structure in 1-9 GHz of frequency band. The important point in this study is the changes of the waveform at the resonance frequency. The output waveform (reflection coefficient S11/ transmission coefficient S12) should change in linear form by considering the dielectric coefficient. We have used copper for the resonators and also the material with ℇ value of 3 as the substrate layers of the structures. We have simulated three types of designed structures with CST Microwave Software and then achieve the results and evaluate them. Both numerical and experimental tests have given approximately same results and are in good agreement with each other. These proposed structures can be used in many applications where it is necessary to determine the rate of ionized sea sand in cement-based composites such as concrete.","PeriodicalId":507374,"journal":{"name":"Journal of Advanced Applied Sciences","volume":"472 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173405","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

Design of Voltage Transducer for Digital Signal Processing Development Kit in Implementation of a High Step-up DC-DC Converter 为数字信号处理开发套件设计电压传感器以实现高升压直流-直流转换器

Journal of Advanced Applied Sciences Pub Date : 2023-12-18 DOI: 10.61326/jaasci.v2i2.99

Yavuz Koç

引用次数: 0

Investigation of Optical and Structural Properties of VO2 Thin Films by Thermal Treatment 通过热处理研究 VO2 薄膜的光学和结构特性

Journal of Advanced Applied Sciences Pub Date : 2023-12-18 DOI: 10.61326/jaasci.v2i2.101

Gökhan Ekinci, Bünyamin Özkal, Nora Ali A. S. Al-Jawfi, S. Kazan

{"title":"Investigation of Optical and Structural Properties of VO2 Thin Films by Thermal Treatment","authors":"Gökhan Ekinci, Bünyamin Özkal, Nora Ali A. S. Al-Jawfi, S. Kazan","doi":"10.61326/jaasci.v2i2.101","DOIUrl":"https://doi.org/10.61326/jaasci.v2i2.101","url":null,"abstract":"In this study, VO2 thin films were grown on SiO2 substrate using the PLD method. Then the grown VO2 thin films were subjected to heat treatments at different temperatures and times in the atmosphere environment. The structural properties of the heat-treated films were investigated using X-ray diffraction (XRD) technique and Raman spectroscopy techniques. The surface microstructures of these films were investigated by Scanning Electron Microscope (SEM) technique, and their optical properties and bond structures were investigated by Photoluminescence (PL) spectra and Fourier Transform Infrared Spectroscopy (FTIR) measurements, respectively. Especially XRD and Raman results revealed that heat treatments with high temperature values transformed the films into VO2 and V2O5 mixed-phase crystal structures. Due to the heat treatment carried out in the atmosphere and the high oxygen affinity of the vanadium metal, crystallization took place in both VO2 and V2O5 forms. In order to obtain homogeneous crystalline VO2 structures, heat treatments should be carried out for a long time in oxygen-limited environments.","PeriodicalId":507374,"journal":{"name":"Journal of Advanced Applied Sciences","volume":"42 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175575","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 of NiSe2 Materials Directly on Ni Foam using Microwave-Assisted Technique and Employing as Electrode Material in Supercapacitors 利用微波辅助技术在镍泡沫上直接合成 NiSe2 材料并将其用作超级电容器的电极材料

Journal of Advanced Applied Sciences Pub Date : 2023-12-18 DOI: 10.61326/jaasci.v2i2.98

R. Taş, Ebru Köroğlu, Vedat Emin Ayaz

{"title":"Synthesis of NiSe2 Materials Directly on Ni Foam using Microwave-Assisted Technique and Employing as Electrode Material in Supercapacitors","authors":"R. Taş, Ebru Köroğlu, Vedat Emin Ayaz","doi":"10.61326/jaasci.v2i2.98","DOIUrl":"https://doi.org/10.61326/jaasci.v2i2.98","url":null,"abstract":"As the world’s population grows, the energy crisis is becoming an increasingly severe problem, driving the need for energy storage. This demand is a significant driver for innovation and development in the energy sector. Clean and sustainable energy research focuses on two areas: renewable resources and high-performance energy storage systems. Today’s energy systems provide large amounts of electricity generation, but the desired results cannot be achieved in the energy storage process. There is an urgent need for high-capacity and efficient energy storage devices. Supercapacitors are one of the most promising technologies for energy storage. They have competitive features such as high power density, excellent cycle stability, and short charge/discharge time. This study demonstrates the potential usage of NiSe2 in supercapacitor applications as cathode material. In an experimentally novel approach, NiSe2 on nickel foam was synthesized by a fast, simple, and inexpensive microwave-assisted method in the presence of selenium salt. In this route, nickel foam was employed as both nickel source and substrate. Furthermore, the electrochemical properties of the prepared NiSe2 cathodes were investigated in three electrodes system. As a result, NiSe2 obtained in 45 minutes delivers a high capacitance of 3.3 F/cm2 at a high current density of 5 mA/cm2.","PeriodicalId":507374,"journal":{"name":"Journal of Advanced Applied Sciences","volume":"67 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175737","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