TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)最新文献

{"title":"Comparison of multiple static segment and sliding window techniques in prostate radiotherapy","authors":"G. Inan, Vefa Gül, G. Yavas, Ç. Yavaş, R. Ogul","doi":"10.1063/1.5135455","DOIUrl":"https://doi.org/10.1063/1.5135455","url":null,"abstract":"The purpose of this study is to compare multiple static segment (step and shoot) and sliding window techniques in intensity modulated radiotherapy (IMRT). Ten definitive prostate patients were included in this study. For each patients, two different treatment plans were created. Multiple static segment and sliding window techniques were compared doses in the planning tardet volume (PTV), the organ at risk (OAR) volumes including rectum dose (V50, V35, V25, V20 and V10), bladder dose (V50, V35, V25 and V15), femoral heads mean and maksimum doses, homogeneity index (DHI) and the monitor unit counts (MU) for the treatment. Gamma analysis was performed by using portal dosimetry software in 2 and 3 distance to agreement and 2% and 3% dose difference criteria and their algorithms were compared. Coverage of the planning target volume (PTV) was showed similar results for both sliding window and step and shoot IMRT, however significant differences were found critical organ doses and total monitor unit (MU). Rectum and bladder mean doses for the sliding window and step and shoot plans were 43.37±10.89, 40.03±12.61 and 42.62±10.22, 39.20±12 and the mean MUs were 1014 cGy and 867 cGy respectively. Homogeneity index (HI) was 0.038±0.01 and 0.079±0.001 for SW and MSS techniques. When compared the calculated and measured dose distributions images of the gamma analyses the average result 2/2% and 3/3% were 97.46±1.34, 99.63±0.82 and 98.16± 0.27, 99.33±0.17 for both the sliding window and step and shoot techniques respectively. Two techniques allowed more homogeneous dose distributions in PTV. Considering the dose to organs at risk (OAR) and total MU, MSS technique seems to be advantages than the sliding window. SW and MMS techniques showed comparable results with the respect to gamma analysis.The purpose of this study is to compare multiple static segment (step and shoot) and sliding window techniques in intensity modulated radiotherapy (IMRT). Ten definitive prostate patients were included in this study. For each patients, two different treatment plans were created. Multiple static segment and sliding window techniques were compared doses in the planning tardet volume (PTV), the organ at risk (OAR) volumes including rectum dose (V50, V35, V25, V20 and V10), bladder dose (V50, V35, V25 and V15), femoral heads mean and maksimum doses, homogeneity index (DHI) and the monitor unit counts (MU) for the treatment. Gamma analysis was performed by using portal dosimetry software in 2 and 3 distance to agreement and 2% and 3% dose difference criteria and their algorithms were compared. Coverage of the planning target volume (PTV) was showed similar results for both sliding window and step and shoot IMRT, however significant differences were found critical organ doses and total monitor unit (MU). Rectum...","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114504737","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}

{"title":"Investigation of the temperature effect of the IPL therapy device on tissue-mimicking material","authors":"H. Durmuş, Emel Çetin, Esra Demirkıran, B. Karaboce, M. Seyidov","doi":"10.1063/1.5135399","DOIUrl":"https://doi.org/10.1063/1.5135399","url":null,"abstract":"In recent years, the role of light-based technologies in dermatology has grown significantly. In addition to lasers, Intense Pulsed Light (IPL) technology, especially as a hair removal device, has been used in daily life. IPL instruments are now used to treat multiple skin conditions in a secure manner, including vascular and pigmented lesions, tattoo removals, wound healing, and unwanted hair, but also provide an extensive therapy option for cosmetic rejuvenation and other dermatological conditions. The effects of the IPL therapy device on tissue-mimicking material were investigated in this study. Our aim here is to determine how much heat effects the rays from the IPL therapy device create in the phantom. An agar-based tissue-mimicking material has been produced to mimic a skin tone. The temperature measurements have been carried out by means of a thermocouple which is placed in a specific distance within the prepared tissue-mimicking material. As a result, the examined IPL therapy device can be said to be safe and harmless in terms of adverse temperature effects for use in daily life.In recent years, the role of light-based technologies in dermatology has grown significantly. In addition to lasers, Intense Pulsed Light (IPL) technology, especially as a hair removal device, has been used in daily life. IPL instruments are now used to treat multiple skin conditions in a secure manner, including vascular and pigmented lesions, tattoo removals, wound healing, and unwanted hair, but also provide an extensive therapy option for cosmetic rejuvenation and other dermatological conditions. The effects of the IPL therapy device on tissue-mimicking material were investigated in this study. Our aim here is to determine how much heat effects the rays from the IPL therapy device create in the phantom. An agar-based tissue-mimicking material has been produced to mimic a skin tone. The temperature measurements have been carried out by means of a thermocouple which is placed in a specific distance within the prepared tissue-mimicking material. As a result, the examined IPL therapy device can be said to...","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"49 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131874026","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}

{"title":"Titanium - carbon multilayer nanostructures obtained by thermionic vacuum arc method","authors":"V. Ciupină, C. Lungu, E. Vasile, G. Prodan, C. Porosnicu, R. Vlǎdoiu, A. Mandeş, V. Dinca, V. Nicolescu, M. Prodan, R. Manu","doi":"10.1063/1.5135433","DOIUrl":"https://doi.org/10.1063/1.5135433","url":null,"abstract":"Titanium-Carbon (Ti-C) multilayer nanostructures were deposed by Thermionic Vacuum Arc (TVA) technology. The layers consisting of about 100 nm Carbon base layer and seven 40 nm alternatively Ti and C layers were deposed on Silicon substrates. The thickness of such a multilayer structure was up to 500 nm. On the other hand, in order to obtain Ti-C multilayer structures with various Ti content, a 20nm thick C layer was first deposed on Si substrate and then seven successively Ti-C layers (Ti and C simultaneously deposed), each of these having a thickness of up to 40 nm were deposed. To perform the successively Ti-C layers with various Ti content were changed the discharge parameters for C and Ti plasma sources to obtain the desirable Ti atomic concentration To characterize microstructure properties of as prepared C-Ti multilayer structures were used Rutherford Backscattering Spectrometry (RBS), Electron microscopy techniques (TEM, STEM), Raman Spectroscopy and electrical measurements.Titanium-Carbon (Ti-C) multilayer nanostructures were deposed by Thermionic Vacuum Arc (TVA) technology. The layers consisting of about 100 nm Carbon base layer and seven 40 nm alternatively Ti and C layers were deposed on Silicon substrates. The thickness of such a multilayer structure was up to 500 nm. On the other hand, in order to obtain Ti-C multilayer structures with various Ti content, a 20nm thick C layer was first deposed on Si substrate and then seven successively Ti-C layers (Ti and C simultaneously deposed), each of these having a thickness of up to 40 nm were deposed. To perform the successively Ti-C layers with various Ti content were changed the discharge parameters for C and Ti plasma sources to obtain the desirable Ti atomic concentration To characterize microstructure properties of as prepared C-Ti multilayer structures were used Rutherford Backscattering Spectrometry (RBS), Electron microscopy techniques (TEM, STEM), Raman Spectroscopy and electrical measurements.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114338390","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}

{"title":"Tracking particle near a flat surface in digital video microscopy","authors":"Harun Yücel","doi":"10.1063/1.5135402","DOIUrl":"https://doi.org/10.1063/1.5135402","url":null,"abstract":"Digital video microscopy (DVM) is an important tool to obtain quantitative information about underlying physics in colloidal systems. DVM, however, has the overlap problem caused by particle’s diffraction pattern when the detected particles are close to contact. This overlapping problem limits the tracking methods in determining accurate particle position that reflects all interactions exerting to particles or objects in colloidal studies. The problem occurs not only between two spherical particles close to each other but also when a spherical particle is close to a rod shaped particle which have a flat surface. In this study, the simulation results on the tracking spherical particle placed near the flat surface of a rod particle in 2D digital video microscopy are reported. This work shows that the overlap problem can be resolved by using a fraction of the intensity distribution of a spherical particle which is close to a flat surface.Digital video microscopy (DVM) is an important tool to obtain quantitative information about underlying physics in colloidal systems. DVM, however, has the overlap problem caused by particle’s diffraction pattern when the detected particles are close to contact. This overlapping problem limits the tracking methods in determining accurate particle position that reflects all interactions exerting to particles or objects in colloidal studies. The problem occurs not only between two spherical particles close to each other but also when a spherical particle is close to a rod shaped particle which have a flat surface. In this study, the simulation results on the tracking spherical particle placed near the flat surface of a rod particle in 2D digital video microscopy are reported. This work shows that the overlap problem can be resolved by using a fraction of the intensity distribution of a spherical particle which is close to a flat surface.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115381667","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}

{"title":"Microstructural and optical properties of Cu doped ZnO thin films prepared by magnetic spin coating","authors":"Sinan Temel, E. Yaman, F. Gökmen","doi":"10.1063/1.5135469","DOIUrl":"https://doi.org/10.1063/1.5135469","url":null,"abstract":"Undoped and Cu doped ZnO (ZnO:Cu) thin films have been prepared by magnetic spin coating technique. Magnetic spin coating technique is a novel thin film deposition technique in which a sol-gel solution is used and the substrate rotation is made magnetically. Influence of Cu doping on structural, morphological and optical properties of ZnO thin film was investigated. The crystallinity of ZnO thin films was found to be degraded by the Cu doping. Both crystallite size and surface morphology were affected by doping. The grain size values decreased with increase in doping concentration. It was observed a change in the optical band gap value with doping. This change has been realized as a decrease depending on the increase in doping. It was determined that structural and optical properties of ZnO films could be controlled by Cu doping.Undoped and Cu doped ZnO (ZnO:Cu) thin films have been prepared by magnetic spin coating technique. Magnetic spin coating technique is a novel thin film deposition technique in which a sol-gel solution is used and the substrate rotation is made magnetically. Influence of Cu doping on structural, morphological and optical properties of ZnO thin film was investigated. The crystallinity of ZnO thin films was found to be degraded by the Cu doping. Both crystallite size and surface morphology were affected by doping. The grain size values decreased with increase in doping concentration. It was observed a change in the optical band gap value with doping. This change has been realized as a decrease depending on the increase in doping. It was determined that structural and optical properties of ZnO films could be controlled by Cu doping.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127825648","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}

{"title":"The light curve analysis of the highly eccentric eclipsing binary KIC 10296163","authors":"C. Çiçek, A. Bulut, I. Bulut","doi":"10.1063/1.5135471","DOIUrl":"https://doi.org/10.1063/1.5135471","url":null,"abstract":"In this study, the analysis of the Kepler light curve of the eclipsing binary KIC 10296163 (Gaia DR2 2085670964017513856, R.A.2000 = 19h564m40s.07, DEC2000 = +470 21’21”.97, mR = 13.43 mag) is presented. The light curve of the system shows a secondary minimum from a shifted phase 0.5 which indicates the ellipticity of the orbit. By using the PHOEBE program we analysed the light curve to achieve the orbital parameters of the system. The results of our analysis indicates a detached system where the orbit is highly eccentric (e = 0.357 ± 0.003). Therefore, KIC 11858541 is a suitable candidate for apsidal motion studies.In this study, the analysis of the Kepler light curve of the eclipsing binary KIC 10296163 (Gaia DR2 2085670964017513856, R.A.2000 = 19h564m40s.07, DEC2000 = +470 21’21”.97, mR = 13.43 mag) is presented. The light curve of the system shows a secondary minimum from a shifted phase 0.5 which indicates the ellipticity of the orbit. By using the PHOEBE program we analysed the light curve to achieve the orbital parameters of the system. The results of our analysis indicates a detached system where the orbit is highly eccentric (e = 0.357 ± 0.003). Therefore, KIC 11858541 is a suitable candidate for apsidal motion studies.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127538882","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}

{"title":"DFT study for the mechanical and electronic properties of Mg3BHx (x=l,4,7) compounds for hydrogen storage applications","authors":"A. Gencer, G. Surucu","doi":"10.1063/1.5135432","DOIUrl":"https://doi.org/10.1063/1.5135432","url":null,"abstract":"The electronic devices such as cell phones, laptops etc. are a necessary part of our daily life that requires portable power sources. Hydrogen being the most abundant element on the Earth, is an excellent energy carrier with high energy capacity that enable to use hydrogen storage methods in portable power sources. In addition, hydrogen storage could be essential to store the energy obtained from the renewable energy sources. The solid state hydrogen storage is an encouraging method for hydrogen storage applications. In this study, Mg3BHx (x=1,4,7) compounds have been studied using Density Functional Theory (DFT) with the Vienna Ab-initio Simulation Package (VASP). The elastic constants have been obtained for the optimized structures. In addition, the band structures have been determined with the corresponding density of states. The gravimetric storage capacities have been determined for these compounds. Mg3BHx compounds with mechanical stability could be promising compounds for hydrogen storage applications.The electronic devices such as cell phones, laptops etc. are a necessary part of our daily life that requires portable power sources. Hydrogen being the most abundant element on the Earth, is an excellent energy carrier with high energy capacity that enable to use hydrogen storage methods in portable power sources. In addition, hydrogen storage could be essential to store the energy obtained from the renewable energy sources. The solid state hydrogen storage is an encouraging method for hydrogen storage applications. In this study, Mg3BHx (x=1,4,7) compounds have been studied using Density Functional Theory (DFT) with the Vienna Ab-initio Simulation Package (VASP). The elastic constants have been obtained for the optimized structures. In addition, the band structures have been determined with the corresponding density of states. The gravimetric storage capacities have been determined for these compounds. Mg3BHx compounds with mechanical stability could be promising compounds for hydrogen storage applications.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132555831","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}

{"title":"Scalar He-Mckellar-Wilkens effect","authors":"B. Hashemi, H. Cildiroglu, A. Yilmazer","doi":"10.1063/1.5135444","DOIUrl":"https://doi.org/10.1063/1.5135444","url":null,"abstract":"Topological phases and their scalar versions are decisively important because they exhibit the profound role of the electromagnetic potentials in quantum mechanics. Vector He-McKellar-Wilkens (VHMW) topological phase emerges when electric dipoles pass around a source of line magnetic charges. Its scalar version can also be conjectured using the concept of electromagnetic duality. In this short contribution, after briefly discussing the VHMW effect we will give the basic mathematical steps for its scalar version and propose an experimental setup.Topological phases and their scalar versions are decisively important because they exhibit the profound role of the electromagnetic potentials in quantum mechanics. Vector He-McKellar-Wilkens (VHMW) topological phase emerges when electric dipoles pass around a source of line magnetic charges. Its scalar version can also be conjectured using the concept of electromagnetic duality. In this short contribution, after briefly discussing the VHMW effect we will give the basic mathematical steps for its scalar version and propose an experimental setup.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117143758","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}

{"title":"Asymmetric uncertainties in measurements: SOAD a Python package based on Monte Carlo Simulations","authors":"M. K. Erdіm, Murat Hüdaverdі","doi":"10.1063/1.5135421","DOIUrl":"https://doi.org/10.1063/1.5135421","url":null,"abstract":"Handling uncertainties has a great importance in order to avoid biased results. The nature of these uncertainties is mostly convenient for specific assumptions, making calculations easier. However, when the uncertainties are not small, symmetric and Normally distributed, one needs more sophisticated methods. In this case, using Monte Carlo Simulations is one of the most reliable options among others, with least assumptions. In this work, we present our newly developed Python package, SOAD (Statistics Of Asymmetric Distributions) that handles calculations using measurements with asymmetric uncertainties by Monte Carlo Simulations, which is easy to use and capable of performing multiple mathematical operations consecutively. The theoretical background of the algorithm and the selected Probability Distribution Function for representing the asymmetric uncertainties are obtained from the literature. The codes were successfully applied to High Energy Astrophysics data and compared with some other methods to see in which circumstances they differ from each other.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117285870","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}

{"title":"Dual scalar Aharonov Bohm phase","authors":"H. Cildiroglu, A. Yilmazer","doi":"10.1063/1.5135445","DOIUrl":"https://doi.org/10.1063/1.5135445","url":null,"abstract":"On the 60th anniversary year of Aharonov-Bohm’s seminal discovery, the past and ongoing theoretical and experimental studies firmly illustrated the profound importance of their topological phase for almost all branches of the physics. In this short study, it is aimed to examine the AB type effects from a holistic perspective and derive the dual of the scalar AB effect for a magnetic monopole passing through a cylindrical magnetic conductor.On the 60th anniversary year of Aharonov-Bohm’s seminal discovery, the past and ongoing theoretical and experimental studies firmly illustrated the profound importance of their topological phase for almost all branches of the physics. In this short study, it is aimed to examine the AB type effects from a holistic perspective and derive the dual of the scalar AB effect for a magnetic monopole passing through a cylindrical magnetic conductor.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115276964","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}