Migration of Labor Force from Iran to the United Arab Emirates

Migration of Labor Force from Iran to the United Arab Emirates

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Part of #Migration of Labor Force from Iran to the United Arab Emirates# :

Publishing year : 2004

Conference : Second congress of Iranian Demography Institute

Number of pages : 7

Abstract The purpose of this paper is to study the migration of Iranian labor force to the United Arab Emirates in the past few decades. To achieve this goal, firstly, the theoretical framework for international labor migration has been established in order to support our discussion of international migration from Iran. Second, the reasons for this migration and the situation of Iranian migrants in the United Arab Emirates are explained. It is argued that the causes are related to the origin society (Iran) and destination society (United Arab Emirates). In relation to the causes, pull and push factors are considered. Third, the paper takes into account the consequences of this migration trend in destination, origin and on migrants. The effects would be related to both the societies and migrants' economic, social and cultural aspects. This study is based on both documentary and field informations. Field information was collected from the Iranian Labor Force in the United Arab Emirates. The paper suggests a few points regarding this migration and the future bettermess of the migrants.

Pounding force response spectrum under near-fault strong ground motion

Pounding force response spectrum under near-fault strong ground motion

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Part of #Pounding force response spectrum under near-fault strong ground motion# :

Publishing year : 2012

Conference : Second International Acoustic and Vibration Conferences

Number of pages : 8

Abstract: The impact force response spectrum between two adjacent linear structures excited by faultnormal pulse and fault-parallel displacement with different magnitudes has been considered. Both structures have been modeled by a single-degree-of-freedom system and the pounding has been simulated by a non-linear viscoelastic model. The system of coupled equations of motion of the model has been solved by the fourth-order runge-kutta method. The results of the study indicate that the peak pounding force between adjacent structures induced by a fault-normal pulse is many times larger than that induced by fault-parallel displacement. Due to the high velocity of the fault motion and under fault-normal pulse with magnitudes M = 5, 6, and 7, the gap size of 15cm, 90cm, and 2.25m are necessary, respectively, to avoid collisions for all considered combinations of structural Period Under fault-parallel displacement with magnitudes M = 5, 6, and 7, the separation gap of 5.5cm, 31cm, and 97cm is necessary, respectively, to prevent pounding

Prediction of azo dye decolorization by UV/TiO2 using artificial neural networks

Prediction of azo dye decolorization by UV/TiO2 using artificial neural networks

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Part of #Prediction of azo dye decolorization by UV/TiO2 using artificial neural networks# :

Publishing year : 2010

Conference : Regional Conference on New Findings of Chemistry and Chemical Engineering

Number of pages : 9

Abstract: An artificial neural network model was developed to predict photocatalytic decolorization of azo dye in Methyl Orange (MO) in water by a combination of UV / TiO2 system. The initial concentrations of dye and titanium dioxide, the pH of solution and time Of UV irradiation were used as input to the network; The output of the network was decolorization efficiency. The multilayer feed-forward networks were trained by 100 sets of inpute-output patterns using a back propagation algorithm; A three-layer network with six neurons in the hidden layer yielded optimal results. The model gave good predictions of high correlation coefficient (R2 = 0.997).

Numerical Simulation of Double Disk Viscous Micropump

Numerical Simulation of Double Disk Viscous Micropump

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Part of #Numerical Simulation of Double Disk Viscous Micropump# :

Publishing year : 2009

Conference : 12th Fluid Dynamics Conference

Number of pages : 6

Abstract: The effects of channel aspect ratio and rotational speed on the flow performance of newly introduced double disk viscous micropumps are investigated in this paper. For the purpose of studying the influence of various parameters on the flow performance of double disk viscous micropumps, the full 3D models of the double disk micropumps have been developed and made an analysis using finite volume method and proper boundary condition. It has shown that the pressure difference varies linearly versus flow rate with constant rotating speed. The results show that the maximum pressure / maximum flow rate at the outlet of the micropump is linearly increased versus increasing the rotational speed. Therefore, the flow rate of micropumps increases with increasing the channel height, however the outlet pressure decreases versus the channel height increase.

Variations on performance characteristics based on the number of lobe the in lubricated rough bearings

Variations on performance characteristics based on the number of lobe the in lubricated rough bearings

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Part of #Variations on performance characteristics based on the number of lobe the in lubricated rough bearings# :

Publishing year : 2015

Conference : International Conference on Science and Engineering

Number of pages : 15

Abstract: To calculate various parameters in lubrication problems, it is not a reliable method to consider surfaces without roughness, since this can lead to many errors. In order to obtain such parameters, there is a need to use a numerical method for solving equations. The combined effects of non-Newtonian rheology and surface roughness on the characteristics of lobed bearings have been investigated in this paper. The fluid in this study is a non-Newtonian micro-polar fluid. Two distinct roughness models, Tsann and Christensen, were applied for the realization of the crude modified Reynolds equations. Furthermore, the effects of the groove in the boundaries of each lobe were examined by pressure distribution. A contact model that takes the properties of engineering surfaces into account has been developed and implemented using the finite element method. There were good agreements between present and previous work. According to the results, as the lobe number is increased, the pressure distribution is increased. On the other hand, the addition of a groove in the boundary condition leads to a decrease in peak of pressure distribution.

Evaluation of Microalgal Biofuel Production under Nitrogenand Phosphorus Starvations

Evaluation of Microalgal Biofuel Production under Nitrogenand Phosphorus Starvations

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Part of #Evaluation of Microalgal Biofuel Production under Nitrogenand Phosphorus Starvations# :

Publishing year : 2016

Conference : Third International Conference on New Research Achievements in Chemistry and Chemical Engineering

Number of pages : 6

Abstract: Microalgal starch and lipids are promising alternative feedstocks for bioethanol and biodiesel production. The aim of this study was to increase the accumulation of starch and lipids in a mixed culture of microalgae under nitrogen and phosphorus starvation. A mixed culture of microalgae accumulated 38% and 11.7% DW (Dry Weight) starch and lipids, respectively, in six -day nitrogen starvation. Starch, lipids, and biomass productivity were 47.18, 10.45 and 57.6 mg / L.day, under this starvation, respectively. Under the same operating condition and phosphorus starvation, microalgae accumulated 23% and 19% of DW starch and lipids, respectively. However, the starch, lipids, and biomass productivity were 16.7, 21.5 and 39.2 mg / L.day, respectively. The data suggest that due to high starch productivity (47.18 mg / L.day) under nitrogen starvation and high lipid productivity (21.5 mg / L.day) under phosphorus starvation, microalgae cultivation is a potential candidate for bioethanol and biodiesel production, respectively

Ductile Design of Reinforced HSC Beams Retrofitted with FRP Plates

Ductile Design of Reinforced HSC Beams Retrofitted with FRP Plates

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Part of #Ductile Design of Reinforced HSC Beams Retrofitted with FRP Plates# :

Publishing year : 2012

Conference : Ninth International Congress of Civil Engineering

Number of pages : 9

Abstract: For high-strength reinforced concrete beams (HSRC) retrofitted with fiber-reinforced polymer (FRP) plates, an analytical method is used to determine the permissible area of the plate to achieve a targeted value of ductility. Nonlinear models for concrete and reinforcement are applied. The derivation of equilibrium and compatibility equations for a rectangular cross section is presented, and the example of the solution to the nonlinear equation for determining the permissible plate area is demonstrated. Analytical results are compared with experimental data reported in the literature. It is noted that additional conditions need to be checked to ensure ductile performance, such as concrete failure of the concrete layer between the tensile reinforcement and the FRP plate or the plate debonding itself

BEHAVIOR OF AIRFLOW AND ITS SIMULATlON UNDER MINE FIRE

BEHAVIOR OF AIRFLOW AND ITS SIMULATlON UNDER MINE FIRE

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Part of #BEHAVIOR OF AIRFLOW AND ITS SIMULATlON UNDER MINE FIRE# :

Publishing year : 2003

Conference : The 5th Conference on Safety, Health and Environment in Mining and Mining Industries

Number of pages : 14

Abstract: A series of actual size mine fire experiments were conducted in a level and inclined roadway. The main purposes of the experiments were;
– obtain the basic data on the air temperature change downwind of the meli fire, – the measurement of the gas concentration in the air from the fire and
– examine the reverse movement of heated air containing toxic gases along the roof from the mine fire. These data are indispensable for taking effective counter measures against the fire and also necessary to make a reasonable firearm simulation by a computer. Veptilation air speed, pressure drop over the fire zone were also measured at the same time. The air temperature is reduced almost exponentially with distance from the fire. The coefficient of air temperature decrease was determined by experiments. The ventilation air speed at the upwind of the fire was reduced as the fire developed. The higher the temperature of the fire zone and the initial air speed, the greater the speed reduction. When the ventilation air speed was less than 1.5 mls in the level roadway and 1.7 m / s in the lowered ventilated slope shaft, the reversal of the hot air near the roof of the roadway was observed. On the basis of these data, a fire simulation program for a personal computer was made and
examined. Several examples of fire simulation by the program will be described. It is very useful to consider the countermeasures for mine fire. It is also helpful to let the people undergoing work know how quickly the toxic gases spread and keep their attention on fire and fire
evacuation from underground at high level.

Nano-TiO2 and Preyssler Dopped Nano-TiO2: A Facile and Efficient Catalyst for the Selective Oxidation of Sulfides to Sulfones and Sulfoxides

Nano-TiO2 and Preyssler Dopped Nano-TiO2: A Facile and Efficient Catalyst for the Selective Oxidation of Sulfides to Sulfones and Sulfoxides

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Part of #Nano-TiO2 and Preyssler Dopped Nano-TiO2: A Facile and Efficient Catalyst for the Selective Oxidation of Sulfides to Sulfones and Sulfoxides# :

Publishing year : 2009

Conference : Third Conference on Nanostructures

Number of pages : 5

Abstract: A novel and efficient synthetic method has been achieved for the selective conversion of sulfides into their respective sulfones and sulfoxides using H2O2 in the presence of a neat or Preyssler dopped nano-TiO2 as catalyst. The reaction was carried out at room temperature with quantitative yields. The catalyst is reusable without significant loss of activity for the next oxidation reaction.

the role of mass media in cultural development ,Job satisfaction and Knowledge Management its advantages and disadvantages (managers of sporting in Esfahan)

the role of mass media in cultural development ,Job satisfaction and Knowledge Management its advantages and disadvantages (managers of sporting in Esfahan)

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Part of #the role of mass media in cultural development ,Job satisfaction and Knowledge Management its advantages and disadvantages (managers of sporting in Esfahan)# :

Publishing year : 2015

Conference : Third National Millennium Conference and Humanities

Number of pages : 8

Abstract: The age of communication is indeed the media affecting all dimensions of people in every society, especially cultural and social dimensions. Media will send us a lot of information every day, then these data will impress our lives and of course this can have a huge amount of influence on our children's life too. Therefore media policy states that media play a decisive role in cultural development. Today's developed society is a term that can be addressed to the society, in which social and economic issues such as Per Capita Income, gross national product (GNP), Death Rate and their effect on literacy As well as education and knowledge of people will be considered.