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Annals of West University of Timisoara Physics最新文献

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Intercomparison of Radon in Soil Instruments at Reference Site in Czech Republic 捷克共和国参考点土壤仪器氡含量的比较
Annals of West University of Timisoara Physics Pub Date : 2013-12-01 DOI: 10.1515/awutp-2015-0107
B. Burghele, M. Moldovan
{"title":"Intercomparison of Radon in Soil Instruments at Reference Site in Czech Republic","authors":"B. Burghele, M. Moldovan","doi":"10.1515/awutp-2015-0107","DOIUrl":"https://doi.org/10.1515/awutp-2015-0107","url":null,"abstract":"Abstract Intercomparison exercises of radon instruments play an important part when it comes to domestic survey as well as international or national mapping in dwellings, soil or water. Therefore, it is of prime interest to improve and standardize technical methods of measurement and also to verify quality assurance through comparison between different instruments and techniques. In the present paper is described the latest intercomparison exercise performed between the Laboratory of Environmental Radioactivity (hereafter called LER) of our department and other 15 different teams around Europe. The test has been held at two radon reference sites located 60 km SW of Prague, Czech Republic.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88622768","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: 1
Note On The Schrödinger Equation 关于Schrödinger方程的说明
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/AWUTP-2015-0008
C. Bizdadea, M. Bârcan, I. Negru, S. Saliu
{"title":"Note On The Schrödinger Equation","authors":"C. Bizdadea, M. Bârcan, I. Negru, S. Saliu","doi":"10.1515/AWUTP-2015-0008","DOIUrl":"https://doi.org/10.1515/AWUTP-2015-0008","url":null,"abstract":"Abstract A second-order formalism leading to an equation describing the same dynamics as the Schrödinger one is developed under some compatible initial conditions.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86022820","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
Preliminary Study In Preparation Of Nd3+: YAG And Sm3+: Y2O3 Transparent Ceramics Nd3+: YAG和Sm3+: Y2O3透明陶瓷制备的初步研究
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/awutp-2015-0011
F. Voicu, C. Gheorghe, C. Florica
{"title":"Preliminary Study In Preparation Of Nd3+: YAG And Sm3+: Y2O3 Transparent Ceramics","authors":"F. Voicu, C. Gheorghe, C. Florica","doi":"10.1515/awutp-2015-0011","DOIUrl":"https://doi.org/10.1515/awutp-2015-0011","url":null,"abstract":"Abstract In the present work we present preliminary research on producing of transparent polycrystalline ceramics. Samarium doped Yttrium oxide (1%, 3% and 5%) and Neodymium (1%) doped YAG (Y3Al5O12) translucent ceramics were fabricated by solid-state reaction. Commercial nanopowders was used as the starting materials: Sm2O3 (6μm) and Y2O2 (20-50 nm) for Sm3+: Y2O3 and α-Al2O3, Y2O3 and Nd2O3 (20-50 nm) for Nd3+: YAG. For the preparation of Nd3+: YAG, 0.5 wt% tetraethyl orthosilicate (TEOS) was use as sintering additive, and 1 wt % PEG (polyethylene glycol-400) as dispersant.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87455891","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: 3
Spin-Hamiltonian Parameters For CrLi3+ Doped In LiNbO3 掺杂在LiNbO3中的CrLi3+的自旋哈密顿参数
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/awutp-2015-0001
N. Avram, M. G. Brik, C. Avram, M.G. Ciresan, E. Andreici
{"title":"Spin-Hamiltonian Parameters For CrLi3+ Doped In LiNbO3","authors":"N. Avram, M. G. Brik, C. Avram, M.G. Ciresan, E. Andreici","doi":"10.1515/awutp-2015-0001","DOIUrl":"https://doi.org/10.1515/awutp-2015-0001","url":null,"abstract":"Abstract By using crystal field theory, the spin-Hamiltonian parameters [zero-field splitting D, the giromagnetic factors g (g|| and g⊥) and the first excited state splitting δ(2E)] for the CrLi3+ doped in LiNbO3 have been calculated from the higher-order perturbation formulas. The method used is based on the two-spin-orbit coupling parameter model, in a cluster approach. The g parameters were also calculated as a second derivative of the energy, method implemented into ORCA computer program. The results were discussed and good agreement with experimental data was demonstrated.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77844911","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
Mixed Symmetry-Tipe (k,1) Massless Tensor Fields. Consistent Interactions Of Dual Linearized Gravity 混合对称型(k,1)无质量张量场。对偶线性化重力的一致相互作用
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/awutp-2015-0016
C. Bizdadea, S. Saliu, M. Toma
{"title":"Mixed Symmetry-Tipe (k,1) Massless Tensor Fields. Consistent Interactions Of Dual Linearized Gravity","authors":"C. Bizdadea, S. Saliu, M. Toma","doi":"10.1515/awutp-2015-0016","DOIUrl":"https://doi.org/10.1515/awutp-2015-0016","url":null,"abstract":"Abstract A particular case of interactions of a single massless tensor field with the mixed symmetry corresponding to a two-column Young diagram (k,1) with k=4, dual to linearized gravity in D=7, is considered in the context of: self-couplings, cross-interactions with a Pauli-Fierz field, cross-couplings to purely matter theories, and interactions with an Abelian 1-form. The general approach relies on the deformation of the solution to the master equation from the antifield-BRST formalism by means of the local cohomology of the BRST differential.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74415306","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
Simulations Of Air Flow Over A Parabolic Antenna 抛物面天线上气流的模拟
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/awutp-2015-0012
L. Bereteu, D. Simoiu
{"title":"Simulations Of Air Flow Over A Parabolic Antenna","authors":"L. Bereteu, D. Simoiu","doi":"10.1515/awutp-2015-0012","DOIUrl":"https://doi.org/10.1515/awutp-2015-0012","url":null,"abstract":"Abstract In this paper it is present the influence of the wind on a parabolic antenna, in order to study this influence it was made simulations of air flow over a parabolic antenna. The simulations are made with antenna positioned at 90°, 135°. A three – dimensional finite element is simulated for determination of the antenna displacement.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83820703","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
Bending Of Adsorbed FCN And FNC Molecules Induced By The Renner-Teller Effect Renner-Teller效应诱导吸附的FCN和FNC分子弯曲
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/awutp-2015-0003
N. Gorinchoy
{"title":"Bending Of Adsorbed FCN And FNC Molecules Induced By The Renner-Teller Effect","authors":"N. Gorinchoy","doi":"10.1515/awutp-2015-0003","DOIUrl":"https://doi.org/10.1515/awutp-2015-0003","url":null,"abstract":"Abstract It is shown that the bending of FCN and FNC molecules adsorbed on Si (100) - (2 × 1) surface, is due to the Renner-Teller effect induced by the orbital charge transfers by adsorption. From ab initio calculations of free FCN and FNC and the molecules adsorbed on the model Si9H12 cluster, the orbital charge transfers to and from the molecules were calculated, the vibronic coupling constants were estimated, and the curvature K of the adiabatic potentials for the bending coordinate of adsorbed molecules was evaluated. Calculations show that for both side-on adsorbed species, as well as for end-on adsorbed FNC molecule K<0 that leads to their bending. For the end-on adsorbed FCN K>0, and this molecule remains linear","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86795762","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: 1
LIDAR Measurements Comparison Of Two Volcanic Eruptions: Environmental Influences Upon The Romanian Territory 两次火山爆发的激光雷达测量比较:对罗马尼亚领土的环境影响
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/awutp-2015-0010
M. Danila, F. Unga, M. Cazacu, A. Timofte, M. Strat, D. Dimitriu, S. Gurlui
{"title":"LIDAR Measurements Comparison Of Two Volcanic Eruptions: Environmental Influences Upon The Romanian Territory","authors":"M. Danila, F. Unga, M. Cazacu, A. Timofte, M. Strat, D. Dimitriu, S. Gurlui","doi":"10.1515/awutp-2015-0010","DOIUrl":"https://doi.org/10.1515/awutp-2015-0010","url":null,"abstract":"Abstract The eruption of both the Eyjafjallajokull (April 2010) and Grimsvotn (May 2011) volcanoes cumulated with two moments that gave headaches to the authorities and air traffic, and their impact on the environment upon Iasi region have been studied by means of different tools evidencing the complexity of the phenomena. In order to evidence the intrusion of pollutants in the cloud systems and to obtain additional data on the intrusion when the ash cloud was over our country, LIDAR measurements, meteorological (NMA), Satellite data (EUMETSAT), and various forecasting models (ECMWF, VAAC-Met Office, HYSPLIT) have been used. The new 3D Atmospheric Observatory Site of the Alexandru Ioan Cuza University of Iasi, as part of RADO (Romanian Atmospheric 3D Observatory) is presented, too.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85370671","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: 1
Using Algebraic Computing To Teach General Relativity And Cosmology 用代数计算教授广义相对论和宇宙学
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/awutp-2015-0022
D. Vulcanov, R. Boată
{"title":"Using Algebraic Computing To Teach General Relativity And Cosmology","authors":"D. Vulcanov, R. Boată","doi":"10.1515/awutp-2015-0022","DOIUrl":"https://doi.org/10.1515/awutp-2015-0022","url":null,"abstract":"Abstract The article presents some new aspects and experience on the use of computer in teaching general relativity and cosmology for undergraduate students (and not only) with some experience in computer manipulation. Some years ago certain results were reported [1] using old fashioned computer algebra platforms but the growing popularity of graphical platforms as Maple and Mathematica forced us to adapt and reconsider our methods and programs. We will describe some simple algebraic programming procedures (in Maple with GrTensorII package) for obtaining and the study of some exact solutions of the Einstein equations in order to convince a dedicated student in general relativity about the utility of a computer algebra system.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77961016","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
Efficient Second Harmonic Generation Of Blue-Violet Light In Noncritical Type-I Phase Matching 非临界i型相位匹配中蓝紫光的有效二次谐波产生
Annals of West University of Timisoara Physics Pub Date : 2012-12-01 DOI: 10.1515/awutp-2015-0004
A. Achim, Lucian Gheorghe, F. Voicu
{"title":"Efficient Second Harmonic Generation Of Blue-Violet Light In Noncritical Type-I Phase Matching","authors":"A. Achim, Lucian Gheorghe, F. Voicu","doi":"10.1515/awutp-2015-0004","DOIUrl":"https://doi.org/10.1515/awutp-2015-0004","url":null,"abstract":"Abstract Single crystals of Y1−xRxCa4O(BO3)3 (R = Sc or Lu) of good quality have been grown from the melt by the Czochralski pulling method. The chemical compositions of the grown crystals were determined. Type-I noncritical phase matching (NCPM) wavelengths for second harmonic generation (SHG) in Y1−xRxCa4O(BO3)3 grown crystals were also determined.","PeriodicalId":31012,"journal":{"name":"Annals of West University of Timisoara Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82424265","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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