The majority of clinically applied antimicrobial agents are derived from natural products generated by soil microorganisms and therefore resistance is likely to be ubiquitous in such environments. This is supported by the fact that numerous clinically important resistance mechanisms are encoded within the genomes of such bacteria. Advances in genomic sequencing have enabled the in silico identi...

Relating to a previous simplified VHDL processor model [1], a more advanced synthesized VHDL pipeline microprocessor model was developed and has been used in the second term computer architecture course offered in the School of Electrical and Computer Engineering at the Georgia Institute of Techonology. This paper will first describe the pipeline processor model and its VHDL implementation. The...

Underground Pipe Line Systems are indispensable in urban construction,as there are various pipelines and these pipelines usually distribute in special environment, they need higher requests to management and maintenance. As so far, although there are many pipelines systems are used in many city, but these systems can’t satisfy operation needs to pipeline management, and systems develop model is...

An implementation of a lumped and 1-dimensional pipeline model for simulation of fast pressure and flow transients such as water-hammer effects is presented. It is an extension of the classical Transmission Line Model (TLM), a transfer matrix representation of a pipeline, relating pressure and volume flow rates at the extremities of a pipeline. The proposed model has extended previous work in d...

The ability of expressing multiple-levels of parallelism is one of the significant features in OpenMP parallel programming model. However, pipeline parallelism is not well supported in OpenMP. This paper proposes extensions to OpenMP directives, aiming at expressing pipeline parallelism effectively. The extended directives are divided into two groups. One can define the precedence at thread lev...

Natural gas pipeline projects in mountainous areas are inevitably affected by geological disasters such as landslides, which pose a serious threat to the safe operation of pipelines along routes crossing landslide areas. In this paper, based on pipe-landslide project area southwest China, interaction mechanism and failure evolution process landslide-pipeline system reinforced two kinds micropil...

The paper presents the improvements of the mathematical model of liquid flow dynamics in long distance pipelines. The model was formulated on the basis of the real pipeline system as a result of research concerning the leak detection and localization algorithms. The model takes into account the liquid pressure and velocity in the pipeline, but also the impact of the others important system elem...

An understanding of pressure propagation mechanisms is crucial in finding suitable conditions for the temporary storage, transmission and attenuation a large signal multi-plug gelled pipeline. The current work investigates transient flow start pipeline, filled with weakly compressible, thixotropic waxy crude oil. A gel can form either naturally or artificially. We solve time-dependent mass mome...

Inthis article we offer a method of ranking contractors by using DEA based onanalysis deficit and AHP. The process of hierarchical analysis (AHP) byproviding scales from paired comparison matrix, performs the contractor’sprioritizing choice. But AHP has some problems and to solve those problems,Jahanshahloo and his colleagues presented a new model which uses DEA andstandard deviation. In this a...

A prototype least cost pipeline routing was performed using various data and GIS analysis. Ahvaz-Marun oil pipeline in south west of IRAN was chosen for development of the prototype. The Ahvaz-Marun pipeline was about 34-km and carries Ethan gas from Marun Petrochemical Company (MPC) to Ahvaz. A model was developed incorporating pipeline length, topography, geology, land use, stream, wetland, r...