Sharif Digital Repository

Due to the continuing progress in CMOS technology and increased number of cores within a chip, multiple components with different levels of criticality have been integrated into a common hardware platform. These systems with these characteristics are known as Mixed-Criticality Systems (MCS). Also, due to the migration towards multi-core systems, power consumption and specifically instantaneous power consumption is the main concern. To avoid the use of cooling technology, we need to reduce the instantaneous power consumption of the system. However, most existing approaches in MCS have paid attention to reliability guaranteed and energy minimization. Therefore, we consider a dynamic scheduling... 

In this research, initially, thin film of TiO2 nanotube arrays (TNA) was deposited on Titanium foil (Ti), using anodization technique under an optimized applied voltage of 60 V, for 200 minutes. Highly smooth and ordered TNA formed by effective two-step anodization method. The TNA synthesized by this procedure, showed a better surface smoothness and tube order as compared with the TNA prepared in one-step anodization process. The electrolyte which was utilized for the anodization process, contained 90% of Ethylene Glycol (EG) in volume, 10% de-ionized water (DI) in volume, 0.1M Ammonium Fluoride (NH4F), and 0.5 ml Phosphoric Acid (H3PO4) 1M in order to adjust the pH about 5.6. Moreover, the... 

This research is focused on inventory management of a blood banking system by assuming deterministic demand and supply with the objective function of minimizing the summation of shortage and wastage. In this research, two integer programming models are developed to solve the problem. In the first model, it is assumed that the blood groups are independent, but in the second one, the transactions between different blood groups are allowed, as it is in reality. Then, to be more efficient and practical, a dynamic heuristic algorithm is developed. In addition, we compared the solution of heuristic algorithm with the exact solutions derived from integer programming models. The data used in this... 

In a steel production plan primary resources entered the process are converted to high value products and byproducts. To this end, resources need to pass several consecutive process that require utility streams. One could not achieve the optimum operation of an industrial process unless they maximize the product and minimize the utility and waste. Therefore, it is important to consider the process stream integrated. The aim of this work is to find the optimum consumption of water and energy in a steel production and to calculate the potential reduction in water and energy resource destruction. Present work could be define a mathematical programing problem in which water users and all streams... 

In this research, synthesis, structural and theoretical studies of rhnium(I) tricarbonyl complexes with general formula, fac-[Re(CO)3(NN)X] in which NN´ is chelating bidentate diimine ligand and X = Cl, Br, and OCOCF3 ligands were studied. The synthesized complexes were characterized by 1H-NMR and FTIR spectroscopic methods and their solid state structures were determined by X-ray diffraction analysis. Then, the reaction of the synthesized rhenium complexes were studied by copper(I) iodide. Crystal structure determination by single-crystal X-ray diffraction allows us to fully examine the intramolecular and intermolecular interactions. We also investigated the energy of different... 

Transportation services enable economic growth of countries and account as a major part of Gross National Product (GNP) but on the other hand have negative environmental impacts including Greenhouse Gas (GHG) emissions, noise pollution and toxic effects on the ecosystem such as acid rain. The traditional objective of distribution management is usually minimizing economic costs. Given the existing environmental problems, ecological and social effects of transportation should be considered in addition to the conventional economic costs. In this study, a special type of Vehicle Routing Problem (VRP) with a heterogeneous vehicle fleet that in which environmental and traffic considerations taken... 

The nanoparticles have been widely used in the field of physics, chemistry, electronics and mechanics because of their high surface area. One of their most important applications is in drug delivery systems as smart drug nanocarrier. Magnetic nanoparticles (including Fe2O3, Fe3O4) are the good candidates for this purpose. It is clear that, upon to entrance of nanoparticle into biological media (such as plasma), the surface of nanoparticles were covered by protein layers (protein corona). This layer is very stable and created new surface on the nanoparticles. The protein corona layer intracts with cellular receptors and determines the fate of nanoparticles. Protein corona covers the targeting... 

New dioxomolybdenum(VI) complex has been synthesized by reacting N-hydroxyphenyl-[5-(triphenylphosphonium)methyl]salicylideneamine chloride (PPh3-H2sap) as a water soluble ligand and [MoO2(acac)2] in ethanolic solution. The water soluble ligand (PPh3-H2sap) was prepared by reaction of 2-aminophenol with (3-formyl-4-hydroxybenzyl)triphenylphosphonium chloride as a water solublesalicylaldehyde derivative. The resulting complex with the formula [MoO2(PPh3-H2sap)(EtOH)] which contains an ethanol molecule in sixth site of coordination, was characterized by elemental analyses, 1H NMR,31P NMR, IR and UV-Vis spectroscopic studies. This complex was tested as a catalyst for the homogeneous...