November 2010
A survey on swarm intelligence based routing protocols in wireless sensor networks
In the last decade, wireless sensor networks have attracted many researchers. One of the main topics adopted by researchers studying on wireless sensor networks is developing routing protocols for wireless systems. Routing protocol development deals with problems such as complexity, scalability, adaptability, survivability and battery life in wireless systems. Routing protocols grounded for wireless systems are...
November 2010
Mix design and mechanical properties of oil palm shell lightweight aggregate concrete: A review
To build environmentally sustainable structures, especially in developing countries, the possibility of using some agricultural wastes and industrial by-products from different industries as construction materials will be highly desirable and has several practical and economic advantages. Oil palm shell (OPS) is a form of agricultural solid waste in the tropical regimes. Research over the last two decades shows that OPS...
November 2010
Apprehending the potential effect of sediment deposition due to dredging in Laonong River upstream, Southern Taiwan
The use of dredging at an appropriate location is a common practice introduced to maintain the flood capacity and the safety of the bridge. The effective zone and characteristics of sediment transport after dredging are important issues that need to be investigated. This study analyzes the fluvial processes in a selected river, Laonong River, by using the NETSTARS numerical model. The hydrodynamic behavior and sediment...
November 2010
The effect of protective dye layer applied with different thicknesses on the paper coated blockboard to the roughness and color characteristics
This study is carried out for determining the changes occurring on the amount of the material used on the protective layer when polyurethane and acrylic (lacquered) dye is applied on the test samples prepared from sandwich type composite (blockboard) boards with their surface coated or uncoated with paper, which are used for the yacht furniture and interior decoration. After applying polyurethane and acrylic dye on the...
November 2010
The effect of air supply and air exhaust locations on particle restraint and removal in a laboratory utilizing a Lagrangian particle-tracking method
The effect of air supply and air exhaust locations on the efficiency of restraining particles from entering the laboratory and the efficiency of particle removal from the laboratory were investigated by simulating the flow conditions, accompanied by a Lagrangian particle-tracking method to calculate the trajectories of the particles in the laboratory. Three cases with air supplied from different locations in the...
November 2010
LabVIEW implement for distorted signal detection with robust complex extended Kalman filter
This paper presents the personal computer (PC)-based LabVIEW as software to develop the algorithm of the robust complex extended Kalman filter (RCEKF) for detection of the parameters of voltage signal in power systems. The hardware of this paper is to take sample-and-hold card and DAQ (data acquisition) card for extracting the datum from the outside system to the PC, the program computes the amplitude, frequency and...
November 2010
Optimization of basic and reactive dye uptakes in binary dye solution using statistical experimental methodology
In the present study, the optimum adsorption conditions for the uptake of methylene blue (MB) and reactive orange 16 (RO16) in binary dye solution by ethylenediamine tetraacidic acid (EDTA) modified rice hulls was studied. By using the Plackett-Burman design, the significant variables in affecting the MB and RO16 uptake in binary dye solution were identified as pH and contact time. The combined effects of interaction...
November 2010
Determination of the parcels committing coastal contravention via the geographical information systems: Sample of Samsun
It is clearly stated in the Constitution and Civil Law, being in the first place, and in Municipal Law, Cadastral Law and Coastal Law that the coasts are under the provision and austerity of the government and that public interest shall be pursued for benefiting from these areas. In the 715 article of the Law, 16/c article of the Cadastral Law and 79 article of the Municipal Law, it is specified that private ownership...
November 2010
Mesomorphic properties of biphenyl derivatives with cholesteryl moiety
A series of cholesteryl 4’-alkyloxybiphenyl-4-carboxylates (CnH2n+1OC6H4 C6H4COOCh, where Ch = cholesteryl) possessing different length of alkyl chain (n = 6, 8, 10, 12, 14, 16, 18) were synthesized and their molecular structures were proposed via physical measurement and spectroscopic techniques. Phase transition temperatures and thermal parameters were obtained from differential scanning calorimetry....
November 2010
Minimizing ammonia volatilization in waterlogged soils through mixing of urea with zeolite and sago waste water
Loss of ammonia through volatilization is one of the major mechanisms which lead to poor urea-N use efficiency. In line with this, a laboratory study was carried out to determine the effect of mixing urea with zeolite and sago waste water on Ammonia volatilization, soil exchangeable ammonium and available nitrate contents compared with urea without additives under waterlogged condition. The soil used in the experiment...
November 2010
Minimizing ammonia loss from urea through mixing with zeolite and acid sulphate soil
Ammonia volatilization is a major cause of nitrogen loss from surface applied urea. While all top dressed ammonia and ammonium-based fertilizers can be volatized, the potential is greatest with urea and fluid containing urea. This laboratory study compared the effect of four different urea-zeolite-acid sulphate soil mixtures on NH3 volatilization and, soil exchangeable NH4 and available NO3 contents of an...
November 2010
Preparation and characterization of Cr(III), Mn(II), Co(III), Ni(II), Cu(II), Zn(II) and Cd(II) chelates of schiffs base derived from vanillin and 4-amino antipyrine
A novel bidentate Schiff base, synthesized from 1-phenyl 2, 3-dimethyl-4-aminopyrazol-5-one (4-aminoantipyrene) and vanillin forms stable complexes with transition metal ions such as Cr (III), Mn (II), Co (II), Ni (II), Cu (II), Zn (II) and Cd (II). Their structures were investigated by elemental analysis, infrared spectroscopy, electronic spectroscopy, NMR spectroscopy; thermo gravimetric analysis and electron spin...
November 2010
Influence of ZnO on the ultrasonic velocity and elastic moduli of soda lime silicate glasses
The effects of ZnO on longitudinal and transverse ultrasonic wave velocities of soda lime silicate (SLS) glasses have been measured using the pulse-echo method at 5 MHz frequency at room temperature. The elastic properties: Longitudinal modulus, shear modulus, Young’s modulus, bulk modulus, Poisson’s ratio, and Debye temperature are found to be rather sensitive to the glass composition. Experiments showed...
November 2010
Evaluation of rainfall trends in Nigeria for 30 years (1978-2007)
The issue of climate change appears to be on the fore burner and it cannot be ascertained to occur without evidence. Rainfall is one of the climatic factors that can indicate climate change. In this work, the non-parametric Mann-Kendall test is used to test for significant trend in rainfall in Nigeria through randomly selected locations in the six geopolitical zones within a 30 years period (1978-2007). The selected...
November 2010
Developing adaptive algorithm for automatic detection of geological linear features using RADARSAT-1 SAR data
Three different polymer latices (latexes) derived from natural rubber (NR), Acrylic (Ac) and Vinyl Acetate/Veova (VA/Ve) copolymer emulsions were blended to yield ten compositions using the principle of simplex lattice design, after adjusting their TSCs solids to 30% (v/v) by dilution with distilled water. The blends were characterized for the determinations of pH, conductivity and refractive indexes, after which they...
November 2010
Bandelet based vector quantization coder design for gray scale image compression
Providing efficient transform-based representations of images is an important problem in the area of image compression. In this paper, the geometrical flow of an image is analyzed by using the Bandelet transform and a new Bandelet based image coding scheme is proposed. First, the bandelet transform of the image is computed. The motivation behind the usage of the bandelet transform is that the geometry of the image is...
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