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69 results for “Stiffness”
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Research ArticleOpen accessIn the abstractSemi Active Tuned Mass Dampers of Buildings: A Simple Control OptionDemetris Demetriou, Nikolaos Nikitas, Konstantinos Daniel TsavdaridisThe present study investigates the effectiveness of a Proportional-Integral-Derivative (PID) controlled Variable Damping Semi-Active Tuned Mass Damper (VD-STMD) on reducing the vibration response of an earthquake excited multi-storey structure. The effectiveness of the controlled system is evaluated by comparing the structure’s overall dynamic behavior against that of an equivalent similar structure equipped with a conventional optimally designed passive Tuned Mass … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 4 · 30 Oct 2015 · 9,652 accessesView PDFCite
Research ArticleOpen accessIn the abstractCross-Section Optimization of Sandwich-Type Cylindrical Wind Turbine TowersStylianos M. Vernardos, Charis J. GantesAs wind energy is aggressively expanding within the alternative sources' part of modern world's energy pie, the need of addressing various obstacles that limit further wind utilization becomes all the more urgent. From a structural engineering point of view, surmounting the tower-base diameter limitation, dictated by the current transportation capabilities, is one of the industry's primary issues. The concept presented … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 4 · 7 Aug 2015 · 7,993 accessesView PDFCite
Research ArticleOpen accessIn the abstractRaman Spectroscopy of Protein Crystal Nucleation and GrowthPechkova Eugenia, Maksimov, Georgy et al.Using Raman spectroscopy and the lysozyme as model system, we investigate the differences in protein conformation before and after Langmuir-Blodgett nanotemplate-induced crystal nucleation and growth. It was found, that the main difference in lysozyme conformation is associated to the higher amount of S-S bonds in lysozyme of LB crystals, probably in C-end of protein, resulting in the higher stiffness of … …American Journal of Biochemistry and Biotechnology, Vol. 10, Issue 3 · 8 Dec 2014 · 8,275 accessesView PDFCite
Research ArticleOpen accessIn the abstractNatural Fiber Reinforced Polymer Composites for Automobile AccessoriesD. Chandramohan, J. BharanichandarThe invention is an effort to utilize the advantages offered by renewable resources for the development of composite materials based on polymer and particles of natural fibers for Conservation of natural resources. In this research, natural fibers like Sisal (Agave sisalana), Banana (Musa sepientum) and Roselle (Hibiscus sabdariffa), Sisal and banana (hybrid), Roselle and banana (hybrid) and Roselle and sisal … …American Journal of Environmental Sciences, Vol. 9, Issue 6 · 17 Jan 2014 · 17,331 accessesView PDFCite
Research ArticleOpen accessIn the abstractRelationship between Fetuin-A and Systemic Lupus Erythematosus as a Predictor Marker for AtherosclerosisOsama F. Mosa, Ibrahim H. Mohamad, Magdi M. SalamaProblem statement: Associations between serum levels of fetuin-A, C3 complement, calcium × phosphate product and calcification risk index and lipid profile in SLE patients were established. However, the mechanism of accelerated atherosclerosis accompanied with SLE remains elusive. We therefore turned to investigate the association between Fetuin-A, disease activity and accelerated atherosclerosis in patients with SLE. Approach: Serum blood samples were … …Current Research in Medicine, Vol. 3, Issue 2 · 15 Sep 2012 · 7,777 accessesView PDFCite
Research ArticleOpen accessIn the abstractDynamic Behavior of Tyre Tread BlockK. Sridharan, R. SivaramakrishnanThe Tyre tread pattern is the arrangement of blocks, grooves and voids, sipes and channels designed into the tread to enhance its grip on the road. Tread is the uppermost part of any tyre which contact into the road and it has its own performance towards mileage, traction, low noise and heat built up properties. It would be meaningful to … …American Journal of Engineering and Applied Sciences, Vol. 5, Issue 2 · 28 Jul 2012 · 9,791 accessesView PDFCite
Research ArticleOpen accessIn the abstractAcoustic Properties of Innovative Material from Date Palm FibreLamyaa Abd AL-Rahman, Raja Ishak Raja, Roslan Abdul Rahman, Zawawi IbrahimProblem statement: An organic material is one of the major requirements to improve living environment and the invention of materials need to consider for the best solution. This study presents an experimental investigation on pure porous from Date Palm Fibre (DPF). The effectiveness of sound absorbers depends on structural architecture of this material. This study was conducted to examine the … …American Journal of Applied Sciences, Vol. 9, Issue 9 · 17 Jul 2012 · 8,094 accessesView PDFCite
Research ArticleOpen accessIn the abstractTuberculoma and Meningitis in a Young Girl: A Case ReportBehroz Ahssan, Shahla AfrasiabianBecause of difficulty in early diagnosis and severe consequences of delay in diagnosis and treatment, tuberculosis meningitis is a serious problem for clinicians. Therefore recognizing rare cases of tuberculosis can improve clinician practice and save patients life in countries with high burden of disease. An 18-year-old girl suffered from fever, headache, illness, arthralgia, myalgia, constipation and weight loss for several … …American Journal of Infectious Diseases, Vol. 8, Issue 2 · 21 May 2012 · 7,689 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Adaptive Neuro-Fuzzy Inference System Based Modeling for Corrosion-Damaged Reinforced HSC Beams Strengthened with External Glass Fibre Reinforced Polymer LaminatesV. Balasubramaniam, P. N. Raghunath, K. SugunaProblem statement: This study presents the results of ANFIS based model proposed for predicting the performance characteristics of reinforced HSC beams subjected to different levels of corrosion damage and strengthened with externally bonded glass fibre reinforced polymer laminates. Approach: A total of 21 beams specimens of size 150, 250×3000 mm were cast and tested. Results: Out of the 21 specimens, … …Journal of Computer Science, Vol. 8, Issue 6 · 17 Mar 2012 · 7,084 accessesView PDFCite
Research ArticleOpen accessIn the abstractImpact of Dietary Polydextrose on Clinical Signs of Canine OsteoarthritisA. C. Beynen, D. H.J. Saris, L. De Jong et al.Problem statement: Osteoarthritis is an inflammatory joint disease associated with loss of cartilage matrix. There is suggestive evidence that the intake of polydextrose fiber has anti-inflammatory activity. It was reasoned that polydextrose may have a positive influence on canine osteoarthritis. Approach: A double-blind, placebo-controlled trial with privately owned dogs was carried out to assess the efficacy of STA-LITE® polydextrose in … …American Journal of Animal and Veterinary Sciences, Vol. 6, Issue 3 · 5 Oct 2011 · 9,052 accessesView PDFCite