Application of image processes is gaining greater potential nowadays particularly in automated manufacturing and in metrology world. It is a technique that has been claimed to be fast and reliable. One of the applications in engineering is the assessment of surface roughness. This application may be considered to be important as it deals with results their order of magnitude is the micron. Thus, in applying the technique of image processing to assess the surface roughness several parameters that is expected to affect the reliability and accuracy must be considered. This paper is not aimed at applying image processing to assess the surface roughness, but its main objective is to focus on the effects of some parameters such as the properties of the digital camera represented by its pixels, the relative setting of the camera with respect to the measured surfaces, the light intensity and the conditions of capturing the image such as shutter speed on the consistency of the results and to its reliability. The results show that the repeatability, reliability and accuracy of the resulted data depended to a great extent on such parameters. Variation of the results reached 33% in several cases. Artificial Neural Network was applied to determine the correlation between the results.
Keywords: - Image parameters, Image processing, Surface roughness, Gray scale, Artificial Neural Network.
In this paper, numerical simulation by finite element software MARC was used to study the residual stress in equal matching and undermatching weld joints of the high strength steel thick plate. Equal matching weld selected ferritic welding consumables and the undermatching weld consisted of austenitic welding consumables. 3D finite element model of thermal-force coupling was developed and the distribution of residual stress in equal matching and undermatching weld was acquired. The simulation results were analyzed and compared. The results showed that the equivalent stress and longitudinal stress in undermatching weld joint are significantly smaller than those in equal matching weld joint, two transverse stresses are not very different. The stress maximum in equal matching case occurs in the weld and heat affected zone, and stress maximum in undermatching case appears only in the heat affected zone.
Keywords: - equal matching weld, undermatching weld, residual stress, numerical simulation
Emeraldine Base Polyaniline (EB-PANI), Emeraldine Salt Polyaniline (ES-PANI) and Leuco Emeraldine Base Polyaniline (LEB-PANI) were studied for detection of different dissolved oxygen levels in solutions. Optical properties of the polyaniline forms were characterized by Ultraviolet-Visible (UV-Vis) spectroscopy. To identify oxygen sensitivity of the PANI films, cyclic voltametry (CV) measurements were performed with the PANI films drop-casted on working platinum electrodes. Electrolyte solution in the CV measurements was based on phosphate buffer with salinity of 20‰ and pH 7.3. Pure nitrogen and oxygen gases were used to change oxygen levels that were monitored by a commercial dissolved oxygen probe. CV measurements showed the variations of current in corresponding to different oxygen concentrations. The correlation of the current and dissolved oxygen levels was also determined. The results exhibited the possibility of using LEB-PANI as sensing electrodes for detection of low concentrations of dissolved oxygen in aquaculture farming.
Keywords: cyclic voltametry, dissolved oxygen detection, leucoemeraldine base polyaniline, oxidation doping, polyaniline
Human activities appear to end up in waste generation, either directly or indirectly. These waste generated should not be wasted. Nigeria faces serious environmental challenge as a result of increasing population. In many Nigerian cities, pungent odour emanating from piled up waste along the streets fills the atmosphere. Besides, substantial land for agriculture has been claimed by open waste dumps. This work studies the problems of waste management in Nigeria, and the role of Material Flow Management (MFM) in tackling them. Waste classification, generation, disposal methods were discussed. The Nigeria's waste problems were also highlighted. Nigeria generates an estimated 6.03million tons of solid waste and 83.04million tons of fresh animal waste per annum. Considering this amount of waste, this paper posits that MFM should be integrated in all aspects of waste in Nigeria for sustainable management in the present and future, and strongly recommends biogas technology as one of MFM's technique that will boost energy generation through waste.
Keywords: Waste, material flow management, biogas, energy, Nigeria
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[2] Ogedengbe P. S., and Oyedele J. B., Effect of Waste Management on Property Values in Ibadan Nigeria, Journal of Land Use and Development Studies Vol. 2, No. 1, 2006.
[3] Ajadi B. S., and Tunde A. M., Spatial Variation in Solid Waste Composition and Management in Ilorin Metropolis, Nigeria J Hum Ecol, 32(2), 2010, 101-108..
[4] Babayemi, J. O., and Dauda, K. T., Evaluation of Solid Waste Generation, Categories and Disposal Options in Developing Countries: A Case Study of Nigeria, J. Appl. Sci. Environ. Manage, Vol. 13(3), 2009, 83 – 88.
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The high cost of conventional Building materials is a major factor affecting housing delivery in Nigeria. This has necessitated research into alternative materials of construction. This paper presents the results of an investigation carried out on the use of Saw Dust Ash(SDA) as partial replacement for Ordinary Portland Cement(OPC) in sandcrete hollow blocks, in order to determine the optimum quantity of SDA in percentage by weight of OPC, so as to effectively reduce the cost of Building production. The percentage of SDA is in gradation of 0%, 5%, 10%, 15% and 20%, two mix ratios (1:6 and 1:8) were used, and the blocks produced were tested for Density and Compressive strength. The results of the tests showed that as the percentage of SDA increased, Density and Compressive strength decreased. At 28days the Compressive strength of blocks with 10% SDA replacement are 2.2N/mm2 and 2.0N/mm 2 which satisfy the requirement. specified by the National Building Code (2006). It was concluded that up to 10% SDA replacement can be used for non-load bearing walls for 1:8 mix at 28days curing age. Also, up to 10% replacement for 1:6 mix can be used for load and non-load bearing walls.
Keyword: Sawdust Ash, Compressive Strength, Density
[1]. Adegoke, C. O., and Ijagbemi, C.O., (2006), "Effect of Sawdust Addition on Thermal and Physical Properties of Ikere - Ekiti and Ikeji –Arakeji Clay Blends", Ife Journal of Technology, Vol. 15, No. 2, 1 -10
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[4]. Emmanuel, A.O., (2008), "The Effect of Wood Ash and Sawdust Admixtures on the Engineering Properties of a Burnt Laterite – Clay Brick", Journal of Applied Sciences, Vol. 8, No. 6, 1042 – 1048.
[5]. Fajobi, A. B., and Adewumi, I. K., (2006)," Optimisation of Sawdust Ash Stabilization of Adobe Bricks", Ife Journal of Technology, Vol. 15, No 2, 57-61.
In fluvial strata, point bar sand body oiliness best, multiple lateral accretion internal distributes. In the late stage of oilfield development, the residual oil is mainly distributed in the point bar sand body. Interlayer distribution in point bar is an important factor that affects the residual oil distribution, clear interlayer spatial distribution characteristics, is the focus of current research. Dissection inclination can be read directly from the core data,when lack of core data, through a variety of methods to calculate the angle, including wide-depth method, convex abandon surface method, subwells method, etc. After reliable verification, three point method is the most accurate.
Keywords: - Point bar;Architectural structure;Three point method;Lateral accretion
[1] Church M.Pattern of instability in a wandering gravel bed channel.In:Collinson J D,Lewin J(eds).Modern and Ancient Fluvial Systems[A].Special Publication of the International Association of Sedimentologists[C].6,Blackwell,Oxford,1983.169-180.
[2] Carson M A.The meandering-braided river threshold:areappraisal[J].Journal of Hydrology 1984,73:315-334.
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[4] Yan Baiquan.Architecture of Meandeing River Point Par,The Displacement Experiment and Analyse of Residual Oil[D]. Northeast Petroleum University,2007.
[5] FAN Guangjuan,MA Shizhong.Fine Study of the Sedimentary Microfacies of Single Sandbody in Xing Twelve Area of Daqing Oilfield: Taking Important Sedimentary Time Units of Putaohua Oil-bearing Layer as an Example[J].Science Technology and Engineering.2011,07:1535-1539.
Paper Type |
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Research Paper |
Title |
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Modeling for the Sensor based Open System Application |
Country |
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South Korea |
Authors |
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Sang Young Lee |
Page No. |
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52-56 |
:: |
0.4/3021-05525256 | |
:: |
3021-0505-0256 |
Over a decade, Service-oriented architectures have seen an increasing interest of both academia and industry communities. This interest is associated with an enthusiasm of companies in different sectors and sizes for the adoption of this new paradigm due to its economic and technological benefits. SOA is a very effective response to the problems faced by companies in terms of reusability, interoperability and reduce coupling between systems that implement their information systems. This paper proposes a Modeling for Sensor Based Business Process Generation and Testing, and introduces its implementation in the BPEL. and we analyzes business process between enterprises, modeling the service-oriented business process with BPEL to realization level. Also, In this paper suggests that UML is used from high-level business problems to the process of low-level problem for Visual and effectively.
Keywords: - Business, Process, Sensor, Service-oriented architectures, System
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