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Research ArticleOpen accessEvery word in the titleSimilarity Solutions for Free Convection Between Two Parallel Porous Walls at Different TemperaturesA. J. Omowaye, O. K. KorikoProblem statement: A two dimensional steady laminar free convective flow of viscous incompressible fluid between two parallel porous walls is considered. Approach: Using the similarity variable, the partial differential equations were reduced to ordinary differential equations. The coupled ordinary differential equations were solved numerically using shooting method. The effect of various physical parameters, such as the Prandtl number, Grashof number, … …Journal of Mathematics and Statistics, Vol. 6, Issue 2 · 30 Jun 2010 · 7,786 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleE-Business Barriers in Iran's Free Trade ZonesMohammad Ali Sarlak, Asghar Abolhasani HastianiCurrently there are 24 free trade and special economic zones in Iran. Problem Statement: of these zones is lack of e-business and this is in spite of managements' desire to have proper infrastructure for e-business in these zones. The goal of this study is to determine and explain e-business barriers in free trade and special economic zones in Iran. Approach: … …Journal of Social Sciences, Vol. 4, Issue 4 · 31 Dec 2008 · 7,596 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAnalytical and Numerical Analysis of Free Bulge Tube HydroformingF. Djavanroodi, M. Gheisary, H. Zoghi-shalFree bulge hydroforming simulation was analysied to investigate the biaxial behavior of extruded aluminum tubes. A finite element model was constructed to simulate the hydroforming process and asses the influence of friction between die walls and tube, tube material properties and springback of formed tube. It was found that material hardening coefficient had the most significant influence on formability characteristics … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 6,868 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleRemoving Useless Productions of a Context Free Grammar through Petri NetMansoor Al-A'ali, Ali A. KhanFollowing the proposal for a Petri Net (PN) representation of the Context Free Grammar (CFG)[1], we propose in this paper, an algorithm to eliminate the useless productions of CFG. First the CFG is represented by a PN. Then, based on the reachability, an algorithm is developed to eliminate Useless-productions. The algorithm is analyzed and implemented in Pascal using examples of … …Journal of Computer Science, Vol. 3, Issue 7 · 31 Jul 2007 · 6,674 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFree Vibration Analysis of a Cross-Ply Laminated Composite Beam on Pasternak FoundationR. A. Jafari-Talookolaei, M. T. AhmadianIn this study, free vibration analysis of a cross-ply laminated composite beam (LCB) on Pasternak foundation was investigated. Natural frequencies of beam on Pasternak foundation are computed using finite element method (FEM) on the basis of Timoshenko beam theory. Effect of both shear deformation and rotary inertia are implemented in the modeling of stiffness and mass matrices. The model was … …Journal of Computer Science, Vol. 3, Issue 1 · 31 Jan 2007 · 7,166 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effects of North America Free Trade Agreement on Mexican Environmental Policy (1994-2004)Ningu J. Kenneth, Jorge Torres Jácome, Sonia E.S. Gomez, Pérez ÁvilesThe scope of this study was to analyze the implementation of the environmental policy and the way Mexico has integrated the environmental aspects into a North America Free Trade Agreement (NAFTA). We are aware of the fact that many environmental costs do not necessarily reflect the environmental damage. Environmental costs are often defined by determining either the willingness of the … …American Journal of Environmental Sciences, Vol. 2, Issue 1 · 31 Mar 2006 · 6,363 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleApplication of a Serum/Protein-Free Medium for the Growth of Mammalian Cell Lines and High Level Production of Classical, Variant and Very Virulent Strain of Infectious Bursal Disease Virus (IBDV)Ane Franciele Tapparo, Paloma Oliveira Tonietti, Maria CecÍlia R. Luvizotto, Tereza C. CardosoThe aim of this study was to verify the capacity of IBDV strains, Lukert, F52/70 and very virulent Brazilian genotype (G11) to infect and replicate on cell culture maintained without serum or protein supplementation. BHK21 and CER cells were directed adapted to growth under absence of protein and/or fetal bovine serum with addition of 5 µg mL-1 of insulin-like growth … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 2 · 30 Jun 2008 · 7,657 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBio-Safety Technology in Production of Bovine Herpesvirus Type 5 (BoHV-5) Using an Alternative Serum-Free MediumTereza C. Cardoso, Heitor F. Ferrari, Maria Cecília R. Luvizotto, Clarice W. ArnsThe detection and growth of bovine herpes virus type 5 (BoHV-5) was evaluated in three different media without foetal bovine serum or animal protein by infecting three different cell lines. The OPTI-PRO, VP-SFM and RPMI 1640 media were supplemented by L-glutamine, antibiotics added by 5µg of insulin-like growth factor (IGF-I) and used to adapt CER, MDBK and CRIB cells in … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 3 · 30 Sep 2007 · 6,994 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMolecular Diagnosis of Toxoplasma gondii in Free-Range Chickens (Gallus gallus) Sold at Fairs in the Metropolitan Region of Macapá–AP (Brazil)Paulo Tarso Tavares Santana, Washington Luiz Assunção Pereira, Rafaelle Casseb Guimarães et al.The informal commercialization of free-range poultry in open markets poses potential food safety risks regarding zoonotic pathogens. This investigation molecularly and histopathologically screened for Toxoplasma gondii in 36 free-range chickens acquired from 12 prominent markets in metropolitan Macapá, Amapá State. Paired heart and brain tissue samples from each animal were processed via conventional PCR and conventional histology. The pathogen was … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 2 Jul 2026 · 1,080 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOmicron SARS Co-V2 Sub Variants BA.2 and BA.3 have Lower Free Binding Energy than BA.1Rujittika Mungmunpuntipantip, Viroj WiwanitkitCOVID-19 is currently a major global public health concern. The newest dangerous type, Omicron, comes in late 2021 and spreads quickly from Africa. There have already been new omicron subvariants discovered. Mutations inside the molecular structure of omicron subvariant induce intriguing molecular changes. The authors undertook a study to examine the effects of mutations in important COVID-19 omicron subvariants, including … …American Journal of Applied Sciences, Vol. 19, Issue 1 · 26 Sep 2022 · 6,027 accessesView PDFCite