Universal Journal of Physics and Application最新文献

{"title":"Fracture Energy of Materials Exposed to Pulse Action","authors":"S. Krivosheev, S. Magazinov","doi":"10.13189/UJPA.2016.100601","DOIUrl":"https://doi.org/10.13189/UJPA.2016.100601","url":null,"abstract":"To study the process of brittle fracture, initiated by a microsecond range pulse action, we applied the magnetic pulse technique of controllable pressure pulse generation with pulse amplitude up to 2 GPa. The threshold energy level has been found, and related to a parameter specific of each material - energy accumulation time. With application of the thermodynamic approach, we develop and demonstrate the destruction criterion that allows us to define this material parameter. Following the results of experimental data and numerical simulation, we show how to describe the destruction process both for samples with crack-type macro defects, and defect-free samples. The study reveals the dependency of the surface energy from the load build-up and material properties when exposed to magnetic pulse action.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"8 1","pages":"181-189"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84723383","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":"Space-like Particle Production: An Interpretation Based on the Majorana Equation","authors":"L. Nanni","doi":"10.13189/ujpa.2018.120201","DOIUrl":"https://doi.org/10.13189/ujpa.2018.120201","url":null,"abstract":"This study reconsiders the decay of an ordinary particle in bradyons, tachyons and luxons in the field of the relativistic quantum mechanics. Lemke already investigated this from the perspective of covariant kinematics. Since the decay involves both space-like and time-like particles, the study uses the Majorana equation for particles with an arbitrary spin. The equation describes the tachyonic and bradyonic realms of massive particles, and approaches the problem of how space-like particles might develop. This method confirms the kinematic constraints that Lemke's theory provided and proves that some possible decays are more favorable than others are.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88513013","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":"Relativistic Modeling for the Giant Atom as a Key for Physics of Self Replication","authors":"Emad Eldieb","doi":"10.13189/UJPA.2016.100501","DOIUrl":"https://doi.org/10.13189/UJPA.2016.100501","url":null,"abstract":"In this paper we put the relativistic basis for the giant atom like system. Before we go with the discussion we have to stress on that it may appear in the beginning of this long study that there was a contradiction with stable facts like the constant speed of light and like quantum physics but as soon as possible we would find that the study completely respects such facts. Also we have to remember all over this study that the final macroscopic state of the micro scoping events inside the giant charge is the zero energy except from a little cut.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"28 1","pages":"141-149"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87532982","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":"Eigen-equation of Electronic Energy in Quantum Dot","authors":"Yu Wu, S. Feng","doi":"10.13189/ujpa.2016.100505","DOIUrl":"https://doi.org/10.13189/ujpa.2016.100505","url":null,"abstract":"In this paper, we present one simple model of quantum dot to describe the potential. Based on the boundary continuity of wave function and its derivative, using the Chebyshev polynomial of the second kind and matrix theory, we deduced one eigen-equation of electronic energy which can clearly describe the relationship between the energy level and the surface potential in quantum dot. The further study shows that the eigen-equation of electronic energy is different when the material of quantum dot is different.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"90 1","pages":"176-179"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76565596","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":"Surface Decontamination Studies of 137 Cs and 85 Sr Using Polymer Gel","authors":"P. Luong, N. Chính, N. D. Lam","doi":"10.13189/UJPA.2016.100502","DOIUrl":"https://doi.org/10.13189/UJPA.2016.100502","url":null,"abstract":"The polymer gel solution consist of water soluble polymer preferably polyvinyl alcohol (PVA), plasticizing agent (glycerine) and chelating agents (citric acid) can decontaminate efficiency of 137 Cs and 84 Sr on the contaminated surfaces. Decontamination efficiency obtained from 95- 99% on glass and stainless steel, ceramic and PVC plastic surfaces, which also depended on radioactivity and coating thickness. Optimization of film thickness is around 200 microns. Decontamination efficiency of Polymer gel were compared with DeconGel 1101 (product from USA) on surfaces. IR spectra studies indicated that Cs + and Sr 2+ ions interacted with PVA and citric acid in Polymer gel through C=O group. Mechanisms of this decontamination process have revealed.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"12 1","pages":"150-156"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73913228","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":"Modern Natural Sciences Could Inspire from Classical Chinese Metaphysics to Better Understand the Nature of Being","authors":"Maria Ferancova","doi":"10.13189/UJPA.2016.100503","DOIUrl":"https://doi.org/10.13189/UJPA.2016.100503","url":null,"abstract":"According to the latest scientific estimates, all resources needed for survival of Humankind on Earth are already in a deficit of up to one and a half planet! To slow down this rapidly widening deficit we are morally obliged to correct our behaviors not only from one to another but, most of all, toward the Earth! For that reason a radical reevaluation of many misinterpretations in present astrophysics, quantum theory and common natural sciences (also because of some incorrect religious opinions) are required, too. To search for a fundamental model to solve these problems is therefore necessary not only to find the most modern scientific, metaphysical and astrophysical solutions but also with the help of a comparative analysis to consider answers to similar questions by some ancient cultures and civilizations on Earth. Hoping to be inspired in our modern world-view with a willingness to change our misinterpretation of Nature, I present in this paper an analysis of ancient Chinese worldview opinions as they contrast with our present prevalent scientific assumptions. However, all this is quite fatally linked with adopting a true metaphysical knowledge about the real substance of the everlasting Multiverse of being (as well as of our Universe in it) and with our acceptance of its bipolar dialectical patterns of all existing processes within it. Modern science considers only a one-directional, especially linearly occurring fundamental axioms, such as entropy, laws of thermodynamics, or the law of conservation of energy. Ancient Chinese concept of the Great Change explains the Universe as a cyclical, infinite flow of contradictory dialectical transformations of its basic Energy, the Energy which is originally a Nothing/Emptiness, stemming from its antipodal bipolar forces=gravitation which is periodically (but not mechanically) reversing its direction. If its anonymous “Nothing” in the Multiverse/Universe (also in the being of our Earth) is not an absolute “nothing” but if it is that pure Energy, full of movement as well as full of information, permanently changing its antinomic polarizations, we are forced to consider such metaphysical reality and synchronize our existence on Earth with its intrinsic laws.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"92 1","pages":"157-169"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83854222","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":"International Approaches to Spent Fuel Management: Challenges and Opportunities","authors":"Andrew Newman, T. Isaacs, A. Constantin","doi":"10.13189/ujpa.2016.100504","DOIUrl":"https://doi.org/10.13189/ujpa.2016.100504","url":null,"abstract":"Despite well-developed repository programs in several countries, the vast majority of states continue to struggle developing and implementing plans to dispose of spent fuel and high level waste produced by nuclear power programs. The lack of spent fuel management options strains the credibility of the nuclear community and undercuts public and political acceptance for current and future nuclear activities. It is unethical, irresponsible and ultimately unsustainable to push the problem onto future generations. It is also a proliferation and security issue. Cooperative networks and regional frameworks for spent fuel storage and disposal could be a productive way to address these problems, particularly in Asia where the need is urgent and growing, and elsewhere. Such partnerships can enhance regional transparency and flexibility as well as improving global security and fortifying nonproliferation. However, the possibility of multinational options should not be used as an excuse for countries to neglect domestic responsibilities; all countries must have a national spent fuel management program. Conversely, national programs should not oppose concerted exploration of multinational approaches.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"32 1","pages":"170-175"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72829481","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":"Relativity Theory in Time-space Manifold","authors":"Á. Horváth","doi":"10.13189/UJPA.2016.100403","DOIUrl":"https://doi.org/10.13189/UJPA.2016.100403","url":null,"abstract":"In this paper we introduce the concept of timespace manifold. We study the affine connection, parallel transport, curvature tensor, and Einstein equation, respectively. In the case homogeneous, a time-space manifold with such tangent spaces which have a certain fixed time-space structure. We redefine the fundamental concepts of global relativity theory with respect to this general situation.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"1 1","pages":"115-127"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89703135","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":"Image Guided Radiotherapy (IGRT) Comparison between Cone Beam CT and Ultrasound System for Prostate Cancer","authors":"B. Tas, I. Durmuş, S. Ozturk","doi":"10.13189/UJPA.2016.100402","DOIUrl":"https://doi.org/10.13189/UJPA.2016.100402","url":null,"abstract":"The aim of this study is to evaluate two different Image Guided RadioTherapy (IGRT) methods during 38 fractions of one prostate cancer patient's treatment. Prostate cancer patient was scanned 3.0mm width by Siemens Biograph mCT and Elekta Clarity® Ultrasound system with transabdominal probe. Critical organs and targets were determined from fusion of these images on the CT data set. Volumetric modulated arc therapy (VMAT) planning were performed by using Monaco 5.1® treatment planning system. Reference images of CT scan and ultrasound images were sent to Elekta Versa HD® linear accelerator's treatment system. Before the prostate cancer patient's treatment, we had scanned prostate localization by Elekta Clarity® Ultrasound system. Then we compared ultrasound images with reference images and we adjusted position of couch. For checking the localization of prostate, we scanned patient by XVI 4.5 Cone Beam CT system and we determined the difference between Ultrasound scan and Cone Beam CT scan an average 2.8±1.6mm lateral direction, 2.9±1.1mm longitudinal direction and 2.6±1.4mm vertical direction during 38 fractions of treatment. The results show that comparison between Clarity® Ultrasound system and Cone Beam CT system less than 3.0mm in three directions. Therefore, we are treating prostate cancer patient with ultrasound IGRT method instead of Cone Beam CT scan method in our clinic.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"118 1","pages":"110-114"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89433452","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":"Comparative Analysis of VVER-1000 Westinghouse and TVEL Spent Fuel Capability","authors":"Y. Kovbasenko","doi":"10.13189/UJPA.2016.100401","DOIUrl":"https://doi.org/10.13189/UJPA.2016.100401","url":null,"abstract":"This work has analyzed the impact on VVER-1000 spent fuel isotope composition caused by the different operational conditions, such as the presence or absence of absorber-rods, oscillating the concentration of boric acid, dissolved in the moderator (water) during the campaign, fuel and/or moderator temperature. Also, impact caused by technological allowances applied while manufacturing fuel assembly was analyzed by weight of fuel and by its enrichment. Calculations were made for reactor cells of fuel assemblies for VVER-1000. They were composed of the typical fuel assemblies of Russian TVEL suppliers and the new fuel assemblies of Westinghouse Company.","PeriodicalId":23443,"journal":{"name":"Universal Journal of Physics and Application","volume":"67 1","pages":"105-109"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83255379","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}