Browsing by Author "Hossain, Amran"

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    Analysis of Road Accident Dhaka-Rangpur Highway (N5)
    (Daffodil International University, 2020-12-30) Hossain, Amran; Rimon, Fajle Rabbi
    The current road traffic accident (RTA) analysis framework in Bangladesh is progressively engaged onto record the board and fundamental information analysis for example attributes analysis purposes as opposed to utilizing it as a wellspring of knowledge. Although Microcomputer Accident Analysis Package (MAAP) based accident database establish the respiratory for road traffic accident (RTA) data of the nation, its application is compelled by various confinements. Be that as it may, the greater part of the past examinations centered on a couple of hazard factors, some particular road clients or specific sorts of accidents; and in this manner the significant components influencing damage or crash seriousness have not been totally perceived at this point. About 10% of the passerby accidents are activated by other accident types, which demonstrate that might be people on foot are the unfortunate casualties as well as invigorating variable for certain accidents. Dividers in urban regions have been found very successful in decreasing fatal passerby accidents. Traffic control frameworks particularly police controlled traffic control framework in urban regions have been distinguished as convincing in diminishing passerby fatal accidents .Geometric segments without police controlled traffic control framework have been recognized as a supporting variable for fatal person on foot accidents. Straight and level geometric areas of roadways have produced all the more two fold vehicle fatal accidents (over 81% accidents are fatal) than different sorts of geometric areas (almost 81% fatal accidents). The last piece of the past finding deteriorated when the segments were related with head on, right point, upset, hit object in road and hit creature sort of collisions (81% fatal). Head on, right point, side swipe, hit object in road, and hit object rough terrain impact types subsidiary with bend just, incline just, and bend and slant geometric segments of the roadways created 81% fatal single vehicle crashes. All things considered, single direction courses associative with dry and sloppy surface incited just 3% fatal cases as constantly saw; though in instance of two-way roads it shoots up to 96% fatal single vehicle accidents.
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    Preparation of New Flexible Antenna Based on Sol-Gel Synthesized MgxCa(0.9-x)Zn0.10Fe2O4 Nanoparticle for Microwave Imaging Applications
    (Daffodil International University, 22-08-24) Rahman, Md Atiqur; Islam, Mohammad Tariqul; Hossain, Amran; Singh, Mandeep Jit; Albadran, Saleh Mohammad; Soliman, Mohamed S.; Samsuzzaman, Md
    This article prepares, MgxCa(0.90-x)Zn0.10Fe2O4 nanoparticle-based new flexible microwave substrate materials to build flexible antennas. The MgxCa(0.90-x)Zn0.10Fe2O4 nanoparticles are synthesized using the sol-gel chemical method. There are three different weight percentages are chosen for “X” values i.e., X= 25%, 50%, and 75%. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM) studies are used to evaluate the structural and morphological features of the produced nanoparticles. Dielectric Assessment Kit is also used to evaluate the nanoparticles' tunable dielectric characteristics (DAK). Loss tangents range from 0.00275 to 0.00675 while dielectric permittivity values range from 3.25 to 4.75. The magnetic characteristics of the produced samples are also investigated using the vibrating sample magnetometer (VSM). The Agilent 8501E module is used to calculate the adjustable magnetic permeability and magnetic loss tangent values. The magnetic permeability and magnetic loss tangent values obtained are in the range of 1.00 to 1.15 and 0.0035 to 0.0065, respectively. Later, a flexible antenna is designed on the prepared flexible substrate that operates within the frequency range of 1.60 GHz to 3.00 GHz with a maximum gain of 5.15 dBi. After that, this antenna is incorporated with a nine-antenna array-based portable microwave head imaging system. Finally, successful brain tumor detection is observed by post-processing the collected scattering parameters with an image reconstruction algorithm. The overall results ensure that the MgxCa(0.90-x)Zn0.10Fe2O4 nanoparticle-based new flexible microwave substrate materials can be a potential candidate for microwave head imaging and are suitable to fit with microwave devices.