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309 results for “z-scan”

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Research ArticleOpen accessIn the keywordsEffect of Varying Loads on Wear Behaviour of Constructional SteelAlo Francis Ireti, Emordi Ngozi, Kunle Michael Oluwasegun et al.This study examined the effect of varying loads on wear behaviour of Ife constructional steel. The wear measurements were determined under normal ranging from 5 to 25 N at interval of 5 N incremental. The morphology of the corroded samples were carried out using optical microscopy and Scanning Electron Microscopy (SEM). When a load of 5 N was used, the … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 1 · 6 Feb 2018 · 7,574 accessesView PDFCite
InvestigationOpen accessIn the keywordsSurvey of Websites and Web Application Security Threats Using Vulnerability AssessmentVincent Appiah, Michael Asante, Isaac Kofi Nti, Owusu Nyarko-BoatengNowadays information has become anasset to many institutions and as a result these institutions have become targets for people with malicious intents to attack these institutions. The web is now an important means of transacting business and without security, websites cannot thrive in today’s complex computer ecosystem as there are new threats emerging as old ones are being tackled. Vulnerability … …Journal of Computer Science, Vol. 15, Issue 10 · 27 Jan 2018 · 9,316 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOsmotic Tension, Plasticization and Viscoelastic response of amorphous Poly-Ether-Ether-Ketone (PEEK) equilibrated in humid environmentsAversa Raffaella, Apicella AntonioDynamic-Mechanical Analysis (DMA), Differential scanning Calorimetry (DSC) and water moisture sorption-desorption kinetics and equilibria have been parallely investigated to monitoring the environmental and thermal sensitivity of amorphous thermoplastic Poly-Ether-Ether-Ketone (PEEK). Morphological modification occurring in PEEK during the calorimetric and thermo-mechanical characterizations and the hygrothermal stability are presented. An interpretation based on the free energy of mixing of a polymer chains … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 3 · 14 Jul 2016 · 8,457 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Heat Moisture Treatment Using Different Solvents and Incubation Times on Resistant Starch Formation of Rice FlourAnuchita Moongngarm, Piyatida Srijinda, Tatdao Paseephol et al.The thermal and pasting properties and Resistant Starch (RS) formation of high amylose rice flour were investigated at 121°C using different solvents and storage times. The samples treated with water and lactic acid 10 mmol/L with storage times 0, 24, 48 and 72 h had the highest degree of gelatinization, ranging from 98.64 to 99.86%. The samples treated with ethanol … …American Journal of Applied Sciences, Vol. 12, Issue 8 · 9 Sep 2015 · 7,381 accessesView PDFCite
Research ArticleOpen accessIn the keywordsHemodynamic Catheters: The Reprocessing, Cleanliness and in vitro Biofilm Formation by Enterococcus faecium in a Continuous Flow ModelCleber Galdino da Silva, Edson Pires de Oliveira, Ednalva Miranda Guizi et al.Reprocessing single-use devices to cut costs is a common practice in hospitals around the world. In Brazil, there are few studies of reprocessing hemodynamic catheters and thus, this study aimed to evaluate the effectiveness of reprocessing hemodynamic catheters before and after biofilm formation in vitro using a continuous flow model. We used a sterility test and Scanning Electron Microscopy (SEM) … …American Journal of Infectious Diseases, Vol. 11, Issue 2 · 24 Jul 2015 · 7,808 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAntibacterial Activity of β-Cyclodextrin and 2-Hydroxypropyl-β-Cyclodextrin Trimethoprim ComplexesHsien-Kuo Sun, Madhumathi Seshadri, Scott Lingard et al.Problem statement: Cyclodextrin complexation has previously been shown to improve the solubility and dissolution properties of trimethoprim; however, no report provides an account of the effect cyclodextrin complexation has on the antibacterial activity of this agent. Approach: β-cyclodextrin and 2-hydroxypropyl β-cyclodextrin inclusion complexes of trimethoprim were prepared and confirmed by differential scanning calorimetry and proton nuclear magnetic resonance. The in-vitro … …Current Research in Microbiology, Vol. 2, Issue 1 · 26 Oct 2011 · 14,801 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAnnual Concentration Report and Emission Sources Analysis of the Air Pollutants Measured by the Air Quality Monitoring StationP Khaenamkaew, S. Raksawong, K. Wongsorntam et al.Problem statement: Air Quality Monitoring (AQM) station at Kasetsart University, Si Racha Campus, Thailand, was routinely monitor the annual concentrations and analysis the emission sources of the air pollutants in the area since 2007. The level of concentration CO, SO2, NOx and O3 were measured. PM10 concentration was measured by mean of TOEM method. The PM10 and TSP (manifold) filters … …American Journal of Environmental Sciences, Vol. 7, Issue 5 · 1 Oct 2011 · 6,733 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDot Detection of Braille Images Using A Mixture of Beta DistributionsAmany Al-Saleh, Ali El-Zaart, Abdul Malik Al-SalmanProblem statement: Braille is a tactile format of written communication for people with low vision and blindness worldwide. Optical Braille Recognition (OBR) offers many benefits to Braille users and people who work with them. Approach: This study presents an algorithm for detecting dots composing braille characters in an image of embossed braille material obtained by an optical scanner. We assumed … …Journal of Computer Science, Vol. 7, Issue 11 · 6 Sep 2011 · 7,436 accessesView PDFCite
Research ArticleOpen accessIn the keywordsBehaviour Based Worm Detection and Signature AutomationMohammed Anbar, Selvakumar Manickam, Al-Samarraie Hosam et al.Problem statement: A worm is a malicious piece of code that self-propagates, often via network connections, to exploit security flaws in computers connected through the network. In general, worms do not need any human intervention to propagate and are considered a real threat to network assets and the properties of organizations. An Intrusion Detection Systems (IDSs) are employed to detect … …Journal of Computer Science, Vol. 7, Issue 11 · 6 Sep 2011 · 6,895 accessesView PDFCite
Research ArticleOpen accessIn the keywordsExperimental Investigation on Micro-Welding of Thin Stainless Steel Sheet by Fiber LaserMohd Idris Shah Ismail, Yasuhiro Okamoto, Akira Okada, Yoshiyuki UnoProblem statement: The miniaturization of components plays an important role for manufacturing in electrical and electronic industries. The joining technology of thin metal sheets has been strongly required. Laser welding with micro-beam and high-speed scanning is a promising solution in micro-welding, because it has high-potential advantages in welding heat sensitive components with precise control of heat input and minimal thermal … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 3 · 18 Aug 2011 · 8,996 accessesView PDFCite