Sultana Rafi - Academia.edu (original) (raw)
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Papers by Sultana Rafi
The assignment problem is a particular type of linear programming problem. In this paper, we anal... more The assignment problem is a particular type of linear programming problem. In this paper, we analyzed the standard and existing proposed methods. After studying these methods, we proposed a new alternative method for solving the assignment problem. We examined the newly proposed method by a couple of numerical examples and compare this result with the standard method. The main characteristic of this newly proposed method is that it constructed a very easy logical and arithmetical algorithm. Here we point out some advantages and limitations of the new proposed method. Programming code for the newly proposed method has been added in this paper.
Aluminum wire mat reinforced polyester composite has been studied as an al-ternative structural m... more Aluminum wire mat reinforced polyester composite has been studied as an al-ternative structural material. The physical and mechanical properties of the composite such as tensile strength, flexural strength, water absorption, hardness illustrated the competency of the developed composite. It was found that per-cent water absorption is very low for the resultant studied composite. However, water absorption increased very slowly when metal mat layers were increased. Furthermore, mechanical strength of the composite was increased as mechanical properties: tensile strength, flexural strength, hardness and stiffness of this composite increased with the increase in the number of metal mat layer in the composite. This study suggested the use of this composite as an unbeaten al-ternative structural material to conventional materials.
Catalysis Communications, Mar 1, 2003
Mesoporous aluminosilicate molecular sieves with the MCM-41 structure (Si/Al ¼ 20) have been synt... more Mesoporous aluminosilicate molecular sieves with the MCM-41 structure (Si/Al ¼ 20) have been synthesized using tetraethoxysilane (TEOS) and sodium aluminate (NaAlO 2) as Si and Al sources and hexadecyltrimethylammonium bromide (HTMABr) and varying several parameters during the preparation process. All the samples were characterized by X-ray diffraction (XRD), Fourier transformed infrared (FT-IR) and solid state MAS NMR spectroscopy. A significant improvement in the structure by using a novel method for template removal has been evaluated.
The assignment problem is a particular type of linear programming problem. In this paper, we anal... more The assignment problem is a particular type of linear programming problem. In this paper, we analyzed the standard and existing proposed methods. After studying these methods, we proposed a new alternative method for solving the assignment problem. We examined the newly proposed method by a couple of numerical examples and compare this result with the standard method. The main characteristic of this newly proposed method is that it constructed a very easy logical and arithmetical algorithm. Here we point out some advantages and limitations of the new proposed method. Programming code for the newly proposed method has been added in this paper.
Aluminum wire mat reinforced polyester composite has been studied as an al-ternative structural m... more Aluminum wire mat reinforced polyester composite has been studied as an al-ternative structural material. The physical and mechanical properties of the composite such as tensile strength, flexural strength, water absorption, hardness illustrated the competency of the developed composite. It was found that per-cent water absorption is very low for the resultant studied composite. However, water absorption increased very slowly when metal mat layers were increased. Furthermore, mechanical strength of the composite was increased as mechanical properties: tensile strength, flexural strength, hardness and stiffness of this composite increased with the increase in the number of metal mat layer in the composite. This study suggested the use of this composite as an unbeaten al-ternative structural material to conventional materials.
Catalysis Communications, Mar 1, 2003
Mesoporous aluminosilicate molecular sieves with the MCM-41 structure (Si/Al ¼ 20) have been synt... more Mesoporous aluminosilicate molecular sieves with the MCM-41 structure (Si/Al ¼ 20) have been synthesized using tetraethoxysilane (TEOS) and sodium aluminate (NaAlO 2) as Si and Al sources and hexadecyltrimethylammonium bromide (HTMABr) and varying several parameters during the preparation process. All the samples were characterized by X-ray diffraction (XRD), Fourier transformed infrared (FT-IR) and solid state MAS NMR spectroscopy. A significant improvement in the structure by using a novel method for template removal has been evaluated.