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Comprehensive Investigation of Neolithic Ceramic Samples: Firing Technology and Age Insights 新石器时代陶瓷样品的综合调查:烧制技术和时代洞察
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-61
Sahib Mammadov, Aybeniz Ahadova
{"title":"Comprehensive Investigation of Neolithic Ceramic Samples: Firing Technology and Age Insights","authors":"Sahib Mammadov, Aybeniz Ahadova","doi":"10.26565/2312-4334-2023-3-61","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-61","url":null,"abstract":"Thermogravimetric (TG/DTG), thermoluminescence (TL), and X-ray powder diffraction (XRD) techniques were applied to characterize samples collected from the archaeological site of Polutepe in Azerbaijan, dating to the Neolithic period, and gave new information on the firing technology. The thermogravimetric analysis of ceramic shards from Polutepe revealed that the firing temperature of the samples was in the range of 700°C, based on the presence of calcite in the sample. XRD analysis confirmed the presence of quartz, feldspar, and clay minerals in the ceramic samples. According to XTD analysis the mineral composition of the ceramic sample from Polutepe site was as follows: Quartz-33.8 mass%, Feldspar (albite)-21.7 mass%, Muscovite- 33.6 mass%, and Calcite- 10.9 mass%.
 TL glow-curve intensity at 325°C was measured to estimate the historical dose of the sample, which was found to be 22.19±1.36 Gy. The concentration of U, Th, and K were 2.24±0.20 ppm , 8.31±0.80 ppm, 2.39±0.23% respectively. Dose rate and age calculation were conducted using the DRAC, version 1.2 and output results are as follows: Environmental dose rate: 3.46±0.19 mGy/a; Age of the sample: 4.400±530 BC years which are in line with the stratigraphically estimated age of this area and with the radiocarbon age (4270±160 BC) reported in our previous work. The results obtained from this multidisciplinary approach provide insights into the firing technology and age of the ceramic samples.
","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496793","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
Anisotropic Cosmological Model in f (R,T) Theory of Gravity with a Quadratic Function of T f (R,T)重力理论中的各向异性宇宙学模型与T的二次函数
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-02
Chandra Rekha Mahanta, Shayanika Deka, Kankana Pathak
{"title":"Anisotropic Cosmological Model in f (R,T) Theory of Gravity with a Quadratic Function of T","authors":"Chandra Rekha Mahanta, Shayanika Deka, Kankana Pathak","doi":"10.26565/2312-4334-2023-3-02","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-02","url":null,"abstract":"In this paper, we study spatially homogeneous and anisotropic Bianchi type-I space-time filled with perfect fluid within the framework of f(R,T) theory of gravity for the functional form f(R,T)=R+2f(T) with f(T)=αT+βT2, where α and β are constants. Exact solutions of the gravitational field equations are obtained by assuming the average scale factor to obey a hybrid expansion law and some cosmological parameters of the model are derived. Two special cases, leading to the power-law expansion and the exponential expansion, are also considered. We investigate the physical and geometrical properties of the models by studying the evolution graphs of some relevant cosmological parameters such as the Hubble parameter (H), the deceleration parameter ( q) etc.","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135497844","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
To Study the Cadmium Sulphide Thin Films Synthesis by Simple Spin Coating Method for Energy Application 研究简单自旋镀膜法制备可用于能源应用的硫化镉薄膜
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-71
Jagmohan Lal Sharma, S.K. Jain, Balram Tripathi, Mahesh Chandra Mishra
{"title":"To Study the Cadmium Sulphide Thin Films Synthesis by Simple Spin Coating Method for Energy Application","authors":"Jagmohan Lal Sharma, S.K. Jain, Balram Tripathi, Mahesh Chandra Mishra","doi":"10.26565/2312-4334-2023-3-71","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-71","url":null,"abstract":"The paper examines the properties of CdS thin film, which is used for window material of solar cells and optical devices. The cadmium sulfide (CdS) thin film was prepared by sol-gel method on glass and ITO substrate. Prepared thin film dried in a vacuum oven at 70℃. Thin film and powder of CdS characterized for structural, optical, and electrical properties by X-ray Diffractometer (XRD), UV-Visible spectrometer, and Keithley spectrometer. The average crystallite sizes, microstrain, and dislocation density of the samples were calculated by the Debye Scherrer formula. The optical band gap of CdS calculated by the Tauc-plot method and obtained 2.40 and 2.41eV for powder and film. The absorption wavelength of CdS is suddenly decreased near 280nm and becomes flat in the higher wavelength region. The FTIR spectrometer is used to identification of unknown materials and bond formation. The bond formation, imperfections, and impurities were observed by the PL spectrometer. Keithley spectrometer is used for I-V characteristics and calculates electrical resistivity by Ohms law.","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135498604","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 influence changing of Nuclear Potential on Quasi-Elastic Scattering in 16O+160Gd and 12C+197Au Systems 核势变化对16O+160Gd和12C+197Au体系准弹性散射的影响
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-16
Farah J. Hamood, Khalid S. Jassim
{"title":"The influence changing of Nuclear Potential on Quasi-Elastic Scattering in 16O+160Gd and 12C+197Au Systems","authors":"Farah J. Hamood, Khalid S. Jassim","doi":"10.26565/2312-4334-2023-3-16","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-16","url":null,"abstract":"In this research, the effect of changing the potential depth V0 on the Quasi-elastic scattering and barrier distribution calculations have been studied using Wood-Saxon (WS) potential for 16O+160Gd and 12C+197Au systems. The chi square (χ2) is applied to compare the best fitted value of the diffuseness parameter between the theoretical calculations and the experimental data. The diffuseness parameter which used in this work is to be at standard value 0.63. The χ2 was applied to most suitable the better fitted value of the potential depth V0. According to the results, we noticed that some systems achieved a good match between the theoretical calculations and experimental data of Quasi-elastic scattering (dσqel/dσR) and the distribution calculations at the standard value of the potential depth or at a value lower than the standard value and no match was achieved at a value greater than the standard value of the potential depth V0. We conclude that the values of quasi-elastic scattering values increase when the value of potential depth decreases.","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135498605","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
Exploring the Impact of Lipid Domain Size on the Lifetime: A Dissipative Particle Dynamics Study 探讨脂质结构域大小对寿命的影响:耗散粒子动力学研究
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-52
Kan Sornbundit
{"title":"Exploring the Impact of Lipid Domain Size on the Lifetime: A Dissipative Particle Dynamics Study","authors":"Kan Sornbundit","doi":"10.26565/2312-4334-2023-3-52","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-52","url":null,"abstract":"In this research, we have used the dissipative particle dynamics (DPD), a mesoscopic simulation technique, in order to investigate the dynamics of lipid domains in near critical temperature. Our specific focus has been on exploring the influence of lipid domain size on its lifetime, which mimics the behavior of lipid rafts within cellular membranes. The lipid membranes used in this study were composed of saturated and unsaturated lipids, which have been immersed in water. Through the simulation of these membranes close to their critical temperature, we have successfully generated fluctuating domains that mimic the lipid rafts observed in cellular systems. We have proposed a method to obtain the lifetime of the fluctuating domains by analyzing the sizes of the lipid domains at specific intervals of time. Our investigations have revealed a linear correlation between the initial size of the lipid domain and its lifetime. Our research finding give an insight into the underlying mechanisms that govern lipid rafts and their vital role in various cellular processes.","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496791","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
Prediction of Viscosity of Cobalt Ferrite/SAE50 Engine Oil based Nanofluids using well Trained Artificial Neutral Network (ANN) and Response Surface Methodology (RSM) 基于训练良好的人工神经网络(ANN)和响应面法(RSM)预测钴铁氧体/SAE50发动机油纳米流体粘度
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-54
Malik Muhammad Hafeezullah, Abdul Rafay, Ghulam Mustafa, Muhammad Khalid, Zubair Ahmed Kalhoro, Abdul Wasim Shaikh, Ahmed Ali Rajput
{"title":"Prediction of Viscosity of Cobalt Ferrite/SAE50 Engine Oil based Nanofluids using well Trained Artificial Neutral Network (ANN) and Response Surface Methodology (RSM)","authors":"Malik Muhammad Hafeezullah, Abdul Rafay, Ghulam Mustafa, Muhammad Khalid, Zubair Ahmed Kalhoro, Abdul Wasim Shaikh, Ahmed Ali Rajput","doi":"10.26565/2312-4334-2023-3-54","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-54","url":null,"abstract":"Heat transmission by ordinary fluids such as pure water, oil, and ethylene glycol is inefficient due to their low viscosity. To boost the efficiency of conventional fluids, very small percent of nanoparticles are added to the base fluids to prepare nanofluid. The impact of changing in viscosity can be used to investigate the rheological properties of nanofluids. In this paper, (CoFe2O4)/engine oil based nanofluids were prepared using two steps standard methodology. In first step, CoFe2O4 (CF) were synthesized using the sol-gel wet chemical process. The crystalline structure and morphology were confirmed using X-Ray diffraction analysis (XRD) and scanning electron microscopy (SEM), respectively. In second step, the standard procedure was adapted by taking several solid volume fractions of CF as Ø = 0, 0.25, 0.50, 0.75, and 1.0 %. Such percent of concentrations were dispersed in appropriate volume of engine oil using the ultrasonication for 5 h. After date, the viscosity of prepared five different nanofluids were determined at temperatures ranging from 40 to 80 °C. According to the findings, the viscosity of nanofluids (µnf) decreased as temperature increased while increased when the volume percentage of nanofluids Ø raised. Furthermore, total 25 experimental observations were considered to predict viscosity using an artificial neural network (ANN) and response surface methodology (RSM). The algorithm for building the ideal ANN architecture has been recommended in order to predict the fluid velocity of the CF/SAE-50 oil based nanofluid using MATLAB software. In order to determine the correctness of the predicted model, the mean square error (MSE) was calculated 0.0136.","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135498245","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
Energy Conditions with Interacting Field in f(R) Gravity f(R)重力中相互作用场的能量条件
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-04
Vasudeo Patil, Jeevan Pawde, Rahul Mapari, Pravin Bolke
{"title":"Energy Conditions with Interacting Field in f(R) Gravity","authors":"Vasudeo Patil, Jeevan Pawde, Rahul Mapari, Pravin Bolke","doi":"10.26565/2312-4334-2023-3-04","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-04","url":null,"abstract":"In the context of current scenario, it is crucial to look beyond Einstein’s theory, which opens the door to certain modified theories of gravity. So, present study is devoted to investigate the various energy conditions, particularly, strong energy condition (SEC), weak energy condition (WEC), null energy condition (NEC) and dominant energy condition (DEC) corresponding to different functional forms of f(R) gravity. We have studied for flat, isotropic and homogeneous FLRW cosmological model filled with interacting field i.e., perfect fluid is coupled with mass less scalar field for different models of modified f(R) gravity in which R is the Ricci scalar. We have observed, the accelerated expansion of the Universe which exact match with recent observational evidences.","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135498257","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 Effect of Doping on the Electrical Conductivity of Vanadium Oxide (V2O5) Films Doped with Nickel Oxide (NiO) Prepared via Pulsed Laser Deposition (PLD). 掺杂对脉冲激光沉积(PLD)法制备氧化钒(V2O5)膜电导率的影响
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-36
Sadon Hassan Hamad, Huda Saadi Ali
{"title":"The Effect of Doping on the Electrical Conductivity of Vanadium Oxide (V2O5) Films Doped with Nickel Oxide (NiO) Prepared via Pulsed Laser Deposition (PLD).","authors":"Sadon Hassan Hamad, Huda Saadi Ali","doi":"10.26565/2312-4334-2023-3-36","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-36","url":null,"abstract":"In this research, the focus was on examining thin films of vanadium oxide (abbreviated as V2O5) with different levels of doping using nickel oxide (NiO) (X = 0, 6, 8)%. The films were created through pulsed laser deposition (PLD) method. The thin films were made and subjected to annealing at 450°C for a duration of one hour. The structural properties of the films were examined using the XRD diffraction technique, whereby the films' composition was found to be polycrystalline, featuring an orthorhombic structure. Notably, the films displayed a prominent alignment along the (111) plane, manifesting at an angle measuring approximately 27.889˚. The FE-SEM technology was utilized to explore and evaluate the surface morphology of the thin films. This showed a nanotube-to-spherical shape transformation. Following the implementation of EDX x-ray technique, it was determined that the films comprised the elemental components of vanadium (V), nickel (Ni), and oxygen (O), consistent with the doping ratios. The assessment of the films' optical properties was carried out through the utilization of UV–visible spectrophotometer, demonstrating decreased absorbance and absorption coefficient, as well as an increased energy gap from 2.32 eV to 2.93 eV. The electrical conductivity results indicated a decrease in direct current conductivity (σd.c) with increasing doping ratio, while the activation energy (Ea) increased. Consequently, these films can be utilized in thermoelectric generators.","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135498606","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
Advancements in Thermoluminescence Dating: A Case Study of Medieval Brick Structures in Azerbaijan 热释光测年的进展:以阿塞拜疆中世纪砖结构为例
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-62
Sahib Mammadov, Aqshin Abishov
{"title":"Advancements in Thermoluminescence Dating: A Case Study of Medieval Brick Structures in Azerbaijan","authors":"Sahib Mammadov, Aqshin Abishov","doi":"10.26565/2312-4334-2023-3-62","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-62","url":null,"abstract":"The study aimed to improve the precision of dating historical landmarks, specifically the Ballabur castle in Lenkaran, Azerbaijan Republic, using the thermoluminescence dating (TL) method. The annual dose rate, calculated with a -spectrometer equipped with a hyper-pure germanium detector, was found to be 2.98±0.19 mGy/year. By employing an online dose rate and age calculator, the sample's age was determined to be 920±50 years, consistent with the historical estimates of this region.
 
","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496557","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
Investigating the Impact of Varying Quantities of TiO2 Nanoparticles on the Anti-Corrosive Characteristics of TiO2-Epoxy Nanocomposite Coatings 研究不同数量的TiO2纳米粒子对TiO2-环氧纳米复合涂层防腐性能的影响
East European Journal of Physics Pub Date : 2023-09-04 DOI: 10.26565/2312-4334-2023-3-59
Ahmed Ibrahim Dawood, Ahmed Qasim Abdullah
{"title":"Investigating the Impact of Varying Quantities of TiO2 Nanoparticles on the Anti-Corrosive Characteristics of TiO2-Epoxy Nanocomposite Coatings","authors":"Ahmed Ibrahim Dawood, Ahmed Qasim Abdullah","doi":"10.26565/2312-4334-2023-3-59","DOIUrl":"https://doi.org/10.26565/2312-4334-2023-3-59","url":null,"abstract":"Prepared were pills coated with TiO2-epoxy nanocomposites, and their anti-corrosive properties were studied by examining the impact of varying amounts of TiO2 nanoparticles in the epoxy resin. The anti-corrosive characteristics of pills were investigated employing electrochemical impedance spectroscopy (EIS). Based on the EIS results, the sample containing 0.01 mg of TiO2 demonstrated the highest impedance value, indicating superior corrosion resistance and better anti-corrosion properties than the other samples. Also, this sample has the lowest corrosion current density among the all samples, with a value of 1.329E-07 mA/cm2, which shows that this sample has the best corrosion resistance and a slower rate of corrosion compared to the other samples.
","PeriodicalId":42569,"journal":{"name":"East European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496567","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
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