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119 articles for “Replacement”
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Research ArticleOpen accessIn the abstractStudy of Energy Types: Fossil, Nuclear and Renewable Energies and their Evaluation in Terms of Environmental Pollution and EconomicallySara Abdollahi, Meysam Madadi, Soleyman Ghorbanzadeh et al.Unwise and increasing exploitation of various energy carriers, including oil, gas and coal, has made countries to focus on two major issues, namely running out fossil fuels, as well as environmental pollution. Hence, one of the main priorities of energy policy is to diversification of energy sources, as well as finding a safe, cheap and nonpolluting energy source (devoid of … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 3 · 18 Jul 2019 · 8,674 accessesView PDFCite
Review ArticleOpen accessIn the abstract“Defiant”, a Today Unique Helicopter in the WorldRelly Victoria Virgil PetrescuYou do not see helicopters like this every day. Sikorsky-Boeing SB1 Defiant in his first demonstration flight showed that it is much more than just a fancy design on paper as he could initially think, with a first relevant flight demonstration. The initial flight lasted less than 30 min, enough time for Defiant to prove he can climb and descend … …Journal of Aircraft and Spacecraft Technology, Vol. 3, Issue 1 · 15 Apr 2019 · 6,847 accessesView PDFCite
InvestigationOpen accessIn the abstractEffect of Chelating Compounds of Microelements for Iodine Enrichment of Cow MilkElena Vladimirovna Bykova, Sergey Petrovich Voronin, Aleksandr Petrovich Korobov et al.This article discusses the problem of iodine deficiency and proposes a solution to this problem by enriching milk with iodine due to the use of organic compounds of microelements in diets of cows. The article presents the results of comparative study of inorganic and organic micromineral additives’ influence on the content of iodine in milk and activity of thyroid hormones … …OnLine Journal of Biological Sciences, Vol. 18, Issue 3 · 12 Apr 2018 · 7,820 accessesView PDFCite
Research ArticleOpen accessIn the abstractCracking of Reinforced Recycled Concrete SlabsFlavio Stochino, Luisa Pani, Lorena Francesconi, Fausto MistrettaThe results of an experimental investigation on cracking of fifteen reinforced recycled concrete slabs are presented in this paper. Five different recycled aggregates replacement percentages have been used for different mix design. First, the values of tensile strength, cylindrical compressive strength and modulus of elasticity of the concrete mixes have been determined. Then the deflection-load curve of the simply supported … …International Journal of Structural Glass and Advanced Materials Research, Vol. 1, Issue 1 · 5 Sep 2017 · 10,162 accessesView PDFCite
Review ArticleOpen accessIn the abstractLockheed Martin-A Short ReviewRelly Victoria Petrescu, Raffaella Aversa, Bilal Akash et al.Lockheed Martin is a company aerospace global American, defense, security and advanced technologies with interests in the world. Has been formed by the merger of Lockheed with Martin Marietta in March 1995. Has its head office in Bethesda, Maryland, in the area of Washington DC. Lockheed Martin has 126,000 employees in the entire world. Marillyn Hewson is the current President … …Journal of Aircraft and Spacecraft Technology, Vol. 1, Issue 1 · 30 May 2017 · 10,232 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of the Role of Oil and Gas Production Complex in Anthropogenic Changes in Vegetation in Mangystau RegionLyudmila Pavlichenko, Espolayeva Aikerim, Aliya Aktymbayeva, Iztayeva AzizaThe article includes the detailed description of a simplified method of solving the integrated environmental assessment inverse problem. The method was developed by the authors on the basis of using ready map of expert specific environmental assessment of anthropogenic transformation of vegetation in Mangistau region. The first part of the methodology is aimed on obtaining concrete actual evidence which is … …American Journal of Environmental Sciences, Vol. 13, Issue 2 · 5 May 2017 · 7,241 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Optimization of a Porous Ti6Al4V Bone Construct Using Additive ManufacturingJeffrey Wilk, Glenn Sanders, Shelby Marks et al.Patient specific implants are becoming viable treatment options in some orthopaedic applications through advances in additive manufacturing and 3D printing techniques. One potential application is for treatment of segmental bone defects, particularly in patients suffering from bone cancer. Current treatment options are: Amputation, megaprosthesis, or allografts. These treatments are often highly invasive, may require a partial/full joint replacement and are … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 2 Jan 2017 · 7,818 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparative Study on Energy Efficient in Traveling Wave Pulse Coupled Oscillator for Wireless Sensor NetworksZeyad Ghaleb Al-Mekhlafi, Zurina Mohd Hanapi, Mohamed Othman, Zuriati Ahmad ZukarnainWSNs are unable to afford simultaneous transmission and reception of data and for most scenarios, the battery replacement is impossible upon the exhaustion of a node's battery energy. Thus, energy efficient protocols constitute vital design requirements for the WSN as a whole in order to increase the lifetime and ensure successful transmission of data from sensor node source to target, … …American Journal of Applied Sciences, Vol. 13, Issue 11 · 21 Nov 2016 · 7,358 accessesView PDFCite
EditorialOpen accessIn the abstractBig Data and Parkinson’s Disease - from Understanding of Disease to Personalised MedicineYen F. Tai, Nicola PaveseThe advancement of information technology in recent years has generated a huge amount of datasets in all areas of scientific research. This has led to new opportunities to harness the 'Big Data' to improve our understanding of diseases - from investigating disease mechanisms to monitoring treatment responses. The Big Data approach is a data-driven and often hypothesis-free, way of studying … …Neuroscience International, Vol. 7, Issue 1 · 27 Jul 2016 · 7,761 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Nano-Alumina on Pore Structure and Durability of Class F Fly Ash Self-Compacting MortarEhsan Mohseni, Konstantinos Daniel TsavdaridisIn this study the effect of pore structure on the mechanical properties and durability characteristics of Self-Compacting Mortars (SCM) containing nano-Al2O3 (NA) and class F fly ash are investigated. Al2O3 nanoparticles with the maximum size of 15 nm in three different proportions of 1, 3 and 5% of the binder content were utilized to partially replace the cement. The 25% … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 2 · 14 Apr 2016 · 9,475 accessesView PDFCite