A New Method for Estimating Original Hydrocarbon in-place Using Available Production Data

A New Method for Estimating Original Hydrocarbon in-place Using Available Production Data

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Part of #A New Method for Estimating Original Hydrocarbon in-place Using Available Production Data# :

Publishing year : 2007

Conference : Second Iranian Petroleum Engineering Congress

Number of pages : 7

Abstract: Material Balance calculations for determination of oil or gas in-place are based on obtaining static reservoir pressures as a function of cumulative production. This Dynamic Material Balance is applicable to either constant flow rate or variable flow rate and can be used both for gas and oil. The Dynamic Material Balance is a procedure that converts the flowing pressure at any point in time to the average reservoir pressure that the reservoir has at that time. Once this is done, the classical material balance calculations become applicable and can be generated by conventional material balances. The procedure is graphical and very straightforward: a) knowing the flow rate and flowing sandface pressure in any given point in time, convert the measured flowing pressure to the average pressure that was in the reservoir at that time; (b) Use this calculated average reservoir pressure and the corresponding cumulative production to calculate the original oil or gas by traditional methods. The method is illustrated using data sets

A Novel Techno-Economical Optimization Approach Based on Linear Integer Programing (LIP) for Hybrid Renewable systems

A Novel Techno-Economical Optimization Approach Based on Linear Integer Programing (LIP) for Hybrid Renewable systems

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Part of #A Novel Techno-Economical Optimization Approach Based on Linear Integer Programing (LIP) for Hybrid Renewable systems# :

Publishing year : 2014

Conference : International Conference and Online Green Economy

Number of pages : 20

Abstract: An optimal approach for sizing of stand-alone hybrid distributed generation (DG) powermanagement systems is presented. The methodology is applied to an integrated hybrid system, including photovoltaic (PV) panels, a wind turbine (WT), and a battery (BT). The PV array is operated effectively at maximum power point tracking. The unit cost of electricity energy (UCEE), as an effective economic probability criterion, and the power supply probability loss (LPSP), are used as a suitable criterion for reliable estimation, to optimize the system size. Typical residential load, solar irradiation, wind speed, and temperature data are collected from the city of Marvdasht, located in Iran, Fars (Latitude: 29 50 'N, Longitude: 52 40' E) to evaluate the proposed technique. A Branch and cut method is employed and coded in MATLAB environment to optimize the configuration of the proposed hybrid system. Regarding the stochastic nature of renewable sources and load, simulation results show the appropriate match rate between demand and supply.

A magnetic polypyrrole nanocomposite as new micro sorbent for isolation of fluoxetine

A magnetic polypyrrole nanocomposite as new micro sorbent for isolation of fluoxetine

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Part of #A magnetic polypyrrole nanocomposite as new micro sorbent for isolation of fluoxetine# :

Publishing year : 2015

Conference : Second National Conference on Modern Technologies in Chemistry and Petrochemicals

Number of pages : 6

Abstract: A new extractor sorbent based on magnetic polypyrrole nanocomposite was synthesized by chemical polymerization for micro-solid phase adsorption. In this study, magnetic nanoparticles and several types of magnetic polypyrrole nanocomposites were produced. Adsorbtion efficiency of magnetic polypyrrole nanocomposites was compared with magnetic nanoparticles for determination of fluoxetine in aqueous samples. The assay of the magnetic components of the polypyrrole nanocomposite, such as the weight ratio of the components, was tested. Various parameters have been optimized for adsorbtion and desorption processes such as eluting solvent, amount of sorbent, adsorption time, component ratio, pH and water solubility. The detection limit of the method under optimized conditions was 15 gL1. The relative standard deviations (n = 5) at a concentration level of 150 gL1 were obtained at 3%. The method was linear for at least three orders of magnitude with correlation coefficients 0.9998. The whole procedure was shown to be a very fast, efficient, selective and economical for adsorption of fluoxetine from environmental and biological samples.

Prediction of Liquid-Liquid Equilibria of Binary Systems Using EoS-GE Models

Prediction of Liquid-Liquid Equilibria of Binary Systems Using EoS-GE Models

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Part of #Prediction of Liquid-Liquid Equilibria of Binary Systems Using EoS-GE Models# :

Publishing year : 2011

Conference : 7th National Congress of Chemical Engineering

Number of pages : 8

Abstract: The reliable prediction of liquid-liquid equilibrium (LLE) plays a significant role for many types of separation technologies. In this work, the predictions of Liquid-Liquid Equilibrium (LLE) for three binary mixtures at 0.1 MPa have been done using the equations of state-excess Gibbs energy model (EoS-GE). The Peng-Robinson EoS modified by Stryjek and Vera (PRSV), and two mixingrules, MHV1 and MHV2, have been applied to three binary systems, including Nonane + Methanol, MethylCyclohexane + Methanol and Phenol + Hexane, with the UNIQUAC model. The interaction parameters of the UNIQUAC GE model have been optimized for these three binary systems from LLE data. The MHV2 excess Gibbs mixing rule shows a more reliable agreement with experimental data

Designing and Fabrication of Postural Stabilometer : A Static Platform

Designing and Fabrication of Postural Stabilometer : A Static Platform

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Part of #Designing and Fabrication of Postural Stabilometer : A Static Platform# :

Publishing year : 2010

Conference : 17th Iranian Conference on Medical Engineering

Number of pages : 4

Abstract: In this paper, the design and fabrication of a static postural stabilizer is described. The hardware and software implementation of the instrument is briefly outlined. Sensor, hardware circuit, filter and A / D converter are presented in hardware section. Forces estimation, center of pressure (COP), position and sway index are stated in the software section. Finally, the general instrument is tested on several healthy subjects and their reports are presented in detail.

Synthesis of a new OH substituted dibenzo sulfoxo aza crown ether (17-C-5) as ligand and application in nano filtration

Synthesis of a new OH substituted dibenzo sulfoxo aza crown ether (17-C-5) as ligand and application in nano filtration

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Part of #Synthesis of a new OH substituted dibenzo sulfoxo aza crown ether (17-C-5) as ligand and application in nano filtration# :

Publishing year : 2010

Conference : First National Conference on Nano Science and Technology

Number of pages : 7

Abstract: The displacement of ions and molecules from a member is an important biological process and an application in isolate and separations. The member of the single layer lipid is impermeable for inorganic ions; Because the charge ions could not pass. From the inside of the hydrological members, of course, there are several processes for displacing ions from a member. Macrocyle lipophilic ionophores as crown ether act like conveyors. Ionophores and metal cations join between member layer levels and source phase , And spread like a pair of ions and trance salts from an inner member, and reach the stage, that in that ionophore complex is destroyed, and the transferred salt is free. A new aza crown macrocycle containing OH groups (DB17C5) is synthesized. Reaction Bis [(4-methyl) phenol (2,2 "-sulphoxide)] with allyl chloride in the presence of K2CO3 and KI was provided to the compound (II). Compound (II) and methachlor perbenzoic acid in dichloromethane was stirred at room temperature for 24 hours, then was prepared bis-epoxide (III). The new macrocycle (DB17C5) was synthesized by reacting bis epoksid with ethylene diamine in 85% yield.

CONSIDERING DG IN EXPANSION PLANNING OF SUBTRANSMISSION SYSTEM

CONSIDERING DG IN EXPANSION PLANNING OF SUBTRANSMISSION SYSTEM

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Part of #CONSIDERING DG IN EXPANSION PLANNING OF SUBTRANSMISSION SYSTEM# :

Publishing year : 2010

Conference : Sixth International Conference on Technical and Physical Issues in Power Engineering

Number of pages : 6

Abstract: Deregulation has acquired new options in the design and planning of the power system. One of these options is the integration of Distributed Generation (DG) into the power system. In this paper, the presence of distributed generation is considered as another alternative for supplying the subtransmission system load. The effects of DG on the expansion planning of the subtransmission system have been modeled as an optimization problem where the Genetic Algorithm (GA) and Linear Programming (LP) are used to solve it. The proposed approach is applied to a typical subtransmission system and the results are evaluated.

SMEs: ERP or Virtual Collaboration Teams

SMEs: ERP or Virtual Collaboration Teams

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Part of #SMEs: ERP or Virtual Collaboration Teams# :

Publishing year : 2008

Conference : First Conference on Organizational Resource Planning Systems

Number of pages : 12

Abstract: Small firms are the engines of global economic growth. Small and Medium Enterprises (SMEs) play an important role in promoting economic development. SMEs in the beginning of implementing new technologies always face a capital shortage and need technological assistance. Available ERP systems do not fulfill the specific requirements of Small businesses. SMEs have scarce resources and manpower so many SMEs do not have the property to buy and operate an ERP System. On the other hand, the competition and the competitiveness of SMEs need to be strengthened. This paper briefly reviews the existing perspectives on virtual teams and their impact on SME management. It also discusses the main characteristics of virtual teams and clarifies the differences in virtual team application in SMEs. After outlining some of the main advantages and pitfall of such teams, it focuses on comparing ERP and virtual collaborative teams in SMEs. Finally, it provides evidence of the need for "Software as a Service (SaaS)" where an application is hosted as a service provided to customers across the web for SMEs as an alternative to ERP. It has been widely argued that ERP disadvantage in SMEs such as administrative costs and costs, an isolated structure, a severe lack of software flexibility, insufficient support for SMEs and high operating costs, lead SMEs to use a virtual collaborative team that is the net work base solution.

Design and Analysis of Magnetizing Coil for Magnetic Resonance Imaging Systems. Hollow Cylindrical Coil Design

Design and Analysis of Magnetizing Coil for Magnetic Resonance Imaging Systems. Hollow Cylindrical Coil Design

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Part of #Design and Analysis of Magnetizing Coil for Magnetic Resonance Imaging Systems. Hollow Cylindrical Coil Design# :

Publishing year : 2014

Conference : Twenty-Ninth International Power Conference

Number of pages : 7

Abstract: A typical magnetic resonance imaging (MRI) contains a large electromagnet capable of generating a static magnetic field in the range of 0.5 Tesla (T) to 3.0 T with a uniformity across the tunnel of 0.5 parts per million (ppm). The central volume, in which patients are placed, is called the tunnel. The main purpose of this work is to design a thick solenoid coil for an MRI scanner. Two key factors in this design are field homogeneity and minimum wired volume consumption. In terms of field homogeneity, I must apply multi constrains, one is considering superconducting features; Another is to apply discretization and cancelling methods. Here, researches are focused on second key factor (ie optimal wired volume). The MATLAB and MAXWELL 16.0 software is simulated by the MATLAB and MAXWELL software, which can be used in a wide variety of solenoid coil design industries ranging from micro to macro. For example, in a macro rang, there is an electrical machine in the electrical power systems that called superconductor magnetic energy storage (SMES), this generates strength field (i.e. a 5 Tesla). And in micro rang we can mention miniature medical diagnostic coils.

Titania nanotube arrays prepared in DMF/HF electrolytes

Titania nanotube arrays prepared in DMF/HF electrolytes

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Part of #Titania nanotube arrays prepared in DMF/HF electrolytes# :

Publishing year : 2009

Conference : Third Conference on Nanostructures

Number of pages : 4

Abstract: Fabrication of titania nanotube arrays by anodization of titanium foil in a fluorinated dimethylformamide (DMF) was investigated. The surface morphology of anodized samples was explored using a scanning electron microscopy (SEM). The prepared anodic film has a highly ordered nanotube-array surface architecture. Compared with water-based electrolytes, much longer and smoother nanotubes can be grown in DMF electrolytes. The influence of applied potentials on the topologies of anodized titanium was also studied. Increasing the anodization potential results in longer nanotubes with larger diameter and wall thickness.