Azarbaijan Shahid Madani University

About: Azarbaijan Shahid Madani University is a education organization based out in Tabriz, Iran. It is known for research contribution in the topics: Graphene & Nanocomposite. The organization has 1477 authors who have published 3186 publications receiving 30278 citations. The organization is also known as: Azarbaijan University.

The adsorption of sulfur trioxide and ozone molecules on stanene nanosheets investigated by DFT: Applications to gas sensor devices

Abstract: Recent findings shed light on performing fundamental experiments for preparation of metal monolayer stanene, which is a zero band gap semiconductor material with buckled honeycomb structure . Stanene possesses outstanding physical and mechanical properties , and has been extensively investigated in the field of nanoelectronic devices. We performed a theoretical study on the adsorption behaviors of O 3 and SO3 molecules on two-dimensional stanene sheet in order to fully exploit the promising gas sensing capability of these materials. We examined the most stable structures of O3 and SO3 molecules adsorbed on the stanene, and examined the adsorption process in view of the energetics , charge transfers and electronic structure of the adsorption systems. The results indicate that the adsorption of gas molecules on the B-doped stanene is more favorable in energy than that on the pristine one, representing the superior sensing performance of B-doped system. Our charge analysis based on Mulliken charges reveals a charge transfer from the stanene sheet to the adsorbed O 3 and SO3 molecules, as evidenced by charge accumulation on the adsorbed molecules. This indicates the gas molecules act as charge acceptors from the stanene sheet. The significant overlaps between the PDOS spectra of the interacting atoms indicate the formation of chemical bonds between these atoms. Our findings thus suggest that B-doped stanene could be a highly efficient gas sensor device for SO3 and O3 detection in the environment.

A Novel Monolithic MILP Framework for Lot-Sizing and Scheduling of Multiproduct Treelike Pipeline Networks

Abstract: Detailed scheduling of long-distance multiproduct pipelines has received growing attention in the past few years. It helps the planner to reduce the number of pump and segment switches between active and idle conditions to obtain savings on pump operating and maintenance costs. Most contributions on the detailed scheduling of multiproduct pipelines concern networks with a single straight line. Large-scale pipeline networks, however, usually have a treelike configuration, featuring a mainline and several secondary lines, transporting smaller volumes of refined petroleum products over shorter distances. This work addresses the scheduling of a multiproduct treelike pipeline through a continuous-time mixed integer linear programming (MILP) model that allows the execution of simultaneous deliveries from a unique refinery to multiple downstream terminals so as to get a substantial increase in transportation capacity. Contrary to previous contributions on treelike pipeline systems, the new model solves batch siz...

On the existence of solutions of a three steps crisis integro-differential equation

Abstract: There are many natural phenomena including a crisis (such as a spate or contest) which could be described in three steps. We investigate the existence of solutions for a three step crisis integro-differential equation. We suppose that the second step is a point-wise defined singular fractional differential equation.