Central European Journal of Engineering最新文献

{"title":"Welcome Message from the Editor-in-Chief","authors":"Qiuwang Zhang","doi":"10.14740/CMMR.V1I1.17","DOIUrl":"https://doi.org/10.14740/CMMR.V1I1.17","url":null,"abstract":"I am greatly honored to be appointed as the inaugural Editor-inChief of Cellular and Molecular Medicine Research (CMMR), an international, open access, and peer-reviewed journal. The goals of this journal are to provide a new avenue for scientists and clinicians to publish their laboratory and clinical research findings, as well as to disseminate information, opinions, and knowledge in cellular and molecular medicine research. Cellular and molecular approaches are pivotal and have long been employed in medicine and clinical research. To cite a few instances, polymerase chain reaction (PCR), a molecular method developed over three decades ago, has been widely applied in disease diagnosis, disease mechanism deciphering, and prognosis prediction; the elucidation of tyrosine kinase activity in cancer cells has led to the development of novel drugs for cancer treatment; and the identification of proteins and genetic molecules by molecular methods as biomarkers for disease diagnosis and prognosis has been drawing great interest. We hope CMMR will serve as a vessel furthering cellular and molecular medicine research. We welcome submissions in the form of original research articles, reviews, short communications, etc. This journal comes into being at the time of an explosion in open access journals. With this recognition, we will make every effort to better meet the needs of authors as well as provide readers with high quality articles. Specifically, during the peer-review process, each submission will be reviewed by experts with relevant expertise, ensuring fair and objective decision-making, which will be guaranteed by experts sitting on the Editorial Board. Additionally, assistance in English editing will be offered to authors whose native language is not English. With hard work and full support from the Editorial Board and the editorial office, I believe the journal will attract submissions from scientists as well as clinicians in the field of cellular and molecular medicine research. I am privileged to have this opportunity to lead the journal and serve our prospective authors and readers, and am looking forward to your contributions and support.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134551354","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":"Low temperature impact toughness of the main gas pipeline steel after long-term degradation","authors":"P. Maruschak, I. Danyliuk, R. Bishchak, T. Vuherer","doi":"10.2478/s13531-013-0178-6","DOIUrl":"https://doi.org/10.2478/s13531-013-0178-6","url":null,"abstract":"The correlation of microstructure, temperature and Charpy V-notch impact properties of a steel 17G1S pipeline steel was investigated in this study. Within the concept of physical mesomechanics, the dynamic failure of specimens is represented as a successive process of the loss of shear stability, which takes place at different structural/scale levels of the material. Characteristic stages are analyzed for various modes of failure, moreover, typical levels of loading and oscillation periods, etc. are determined. Relations between low temperature derived through this test, microstructures and Charpy (V-notch) toughness test results are also discussed in this paper.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125826693","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":"Ternary approximating non-stationary subdivision schemes for curve design","authors":"S. Siddiqi, M. Younis","doi":"10.2478/s13531-013-0149-y","DOIUrl":"https://doi.org/10.2478/s13531-013-0149-y","url":null,"abstract":"In this paper, an algorithm has been introduced to produce ternary 2m-point (for any integer m ≥ 1) approximating non-stationary subdivision schemes which can generate the linear spaces spanned by {1; cos(α.); sin(α.)}. The theory of asymptotic equivalence is being used to analyze the convergence and smoothness of the schemes. The proposed algorithm can be consider as the non-stationary counter part of the 2-point and 4-point existing ternary stationary approximating schemes, for different values of m. Moreover, the proposed algorithm has the ability to reproduce or regenerate the conic sections, trigonometric polynomials and trigonometric splines.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115904514","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":"Investigating Jeffery-Hamel flow with high magnetic field and nanoparticle by HPM and AGM","authors":"A. Rostami, M. Akbari, D. D. Ganji, S. Heydari","doi":"10.2478/s13531-013-0175-9","DOIUrl":"https://doi.org/10.2478/s13531-013-0175-9","url":null,"abstract":"In this study, the effects of magnetic field and nanoparticle on the Jeffery-Hamel flow are studied using two powerful analytical methods, Homotopy Perturbation Method (HPM) and a simple and innovative approach which we have named it Akbari-Ganji’s Method(AGM). Comparisons have been made between HPM, AGM and Numerical Method and the acquired results show that these methods have high accuracy for different values of α, Hartmann numbers, and Reynolds numbers. The flow field inside the divergent channel is studied for various values of Hartmann number and angle of channel. The effect of nanoparticle volume fraction in the absence of magnetic field is investigated.It is necessary to represent some of the advantages of choosing the new method, AGM, for solving nonlinear differential equations as follows: AGM is a very suitable computational process and is applicable for solving various nonlinear differential equations. Moreover, in AGM by solving a set of algebraic equations, complicated nonlinear equations can easily be solved and without any mathematical operations such as integration, the solution of the problem can be obtained very simply and easily. It is notable that this solution procedure, AGM, can help students with intermediate mathematical knowledge to solve a broad range of complicated nonlinear differential equations.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128735236","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":"City sewer collectors biocorrosion","authors":"M. Książek","doi":"10.2478/s13531-013-0177-7","DOIUrl":"https://doi.org/10.2478/s13531-013-0177-7","url":null,"abstract":"This paper presents the biocorrosion of city sewer collectors impregnated with special polymer sulphur binders, polymerized sulphur, which is applied as the industrial waste material. The city sewer collectors are settled with a colony of soil bacteria which have corrosive effects on its structure. Chemoautotrophic nitrifying bacteria utilize the residues of halites (carbamide) which migrate in the city sewer collectors, due to the damaged dampproofing of the roadway and produce nitrogen salts. Chemoorganotrophic bacteria utilize the traces of organic substrates and produce a number of organic acids (formic, acetic, propionic, citric, oxalic and other). The activity of microorganisms so enables the origination of primary and secondary salts which affect physical properties of concretes in city sewer collectors unfavourably.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125516548","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":"Analytical accuracy of the one dimensional heat transfer in geometry with logarithmic various surfaces","authors":"A. Vahabzadeh, M. Fakour, D. D. Ganji, I. Rahimipetroudi","doi":"10.2478/s13531-013-0176-8","DOIUrl":"https://doi.org/10.2478/s13531-013-0176-8","url":null,"abstract":"In this study, heat transfer and temperature distribution equations for logarithmic surface are investigated analytically and numerically. Employing the similarity variables, the governing differential equations have been reduced to ordinary ones and solved via Homotopy perturbation method (HPM), Variational iteration method (VIM), Adomian decomposition method (ADM). The influence of the some physical parameters such as rate of effectiveness of temperature on non-dimensional temperature profiles is considered. Also the fourth-order Runge-Kutta numerical method (NUM) is used for the validity of these analytical methods and excellent agreement are observed between the solutions obtained from HPM, VIM, ADM and numerical results.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114292146","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":"Bandwidth optimization of compact microstrip antenna for PCS/DCS/bluetooth application","authors":"V. Singh, Z. Ali, S. Ayub, Ashutosh Kumar Singh","doi":"10.2478/s13531-013-0160-3","DOIUrl":"https://doi.org/10.2478/s13531-013-0160-3","url":null,"abstract":"A novel compact broadband microstrip patch antenna is presented for various wireless applications. The proposed antenna has been fabricated and the impedance bandwidth and radiation pattern are measured. The simulated and measured antenna characteristics along with radiation pattern and gain are presented. It is stated that the proposed designed antenna can completely cover the required band widths of Digital communication system (DCS 1.71–1.88 GHz), Personal communication system (PCS 1.85–1.88 GHz) and IEEE 802.11b/g (2.4–2.485 GHz) with satisfactory radiation characteristics. The Experimental result shows that the proposed antenna presents a bandwidth 60.25% covering the range of 1.431–2.665 GHz with the maximum radiation efficiency 90%.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127224107","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":"Physical and mechanical properties of composites based on polypropylene and timber industry waste","authors":"J. Kajaks, K. Kalniņš, Sandris Uzulis, Juris Matvejs","doi":"10.2478/s13531-013-0172-z","DOIUrl":"https://doi.org/10.2478/s13531-013-0172-z","url":null,"abstract":"Wood polymer composites (WPC) are widely used materials in different industries because of many application, processing and recycling advantages compared to traditional thermoplastic polymer composites containing mineral fillers [1]. However, the commercial success of these materials primarily depends on improvements in moisture performance, and ability to use recycled and waste material as a wood filler. The research regarding WPC is focused on the chemical interaction between dissimilar material components with an aim to provide strong adhesion to the surface of wood filler-polymer matrix [2]. The goal of this paper was to present results of investigations of exploitation properties of composites containing different plywood production industry byproducts and polypropylene. It was shown that modification of all composites with coupling agent maleated polypropylene (MAPP) considerably improve physical mechanical properties (tensile, flexural, impact strength) of WPC. MAPP (5 wt.%) additions also significantly improve water resistance of WPC. SEM investigations confirmed positive action of interfacial modifiers on strengthening of adhesion interaction between components wood and PP matrix that give considerable increase of exploitation properties of the WPC.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"508 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124466485","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":"Effect of MHD and Injection through one side of a long vertical channel embedded in porous medium with transpiration cooling","authors":"K. Govardhan, K. Kaladhar, G. Nagaraju, B. Balaswamy","doi":"10.2478/s13531-013-0174-x","DOIUrl":"https://doi.org/10.2478/s13531-013-0174-x","url":null,"abstract":"This paper examines the effect of MHD, and injection through one side of a long vertical channel embedded in porous medium with transpiration cooling. The governing nonlinear partial differential equations have been transformed by similarity transformation into a set of ordinary differential equations, which are solved numerically by Adam-moultan Predictor-Corrector method with Newton-Raphson Method for missing initial conditions. Proflles of dimensionless velocity, temperature and concentration are shown graphically for different parameters entering into the analysis. Also the effects of the pertinent parameters on the heat transfer rates are tabulated. An analysis of the results obtained shows that the flow field is influenced appreciably by emerging parameters of the present study.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131457291","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":"New (3+1)-dimensional nonlinear evolution equation: multiple soliton solutions","authors":"A. Wazwaz","doi":"10.2478/s13531-013-0173-y","DOIUrl":"https://doi.org/10.2478/s13531-013-0173-y","url":null,"abstract":"In this work, we introduce an extended (3+1)-dimensional nonlinear evolution equation. We determine multiple soliton solutions by using the simplified Hirota’s method. In addition, we establish a variety of travelling wave solutions by using hyperbolic and trigonometric ansatze.","PeriodicalId":407983,"journal":{"name":"Central European Journal of Engineering","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116467015","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}