University of Jiroft
University of Jiroft
Dowlati M.,University of Jiroft |
Aghbashlo M.,University of Tehran |
Mojarab Soufiyan M.,University of Tehran
Energy | Year: 2017
In this study, a comprehensive exergetic performance analysis of an ice-cream manufacturing plant was conducted in order to pinpoint the locations of thermodynamic inefficiencies. Exergetic performance parameters of each subunit of the plant were determined and illustrated individually through writing and solving energy and exergy balance equations on the basis of real operational data. The required data were acquired from a local ice-cream factory located in Tehran, Iran. The plant included three main subsystems including water steam generator, refrigeration system, and ice-cream production line. An attempt was also made to quantify the specific exergy destruction of the ice-cream manufacturing process. The functional exergetic efficiency of the water steam generator, refrigeration system, and ice-cream production line was determined at 17.45%, 25.52%, and 5.71%, respectively. The overall functional exergetic efficiency of the process was found to be 2.15%, while the specific exergy destruction was calculated as 719.80 kJ/kg. In general, exergy analysis and its derivatives could provide invaluable information over the conventional energy analysis, suggesting potential locations for the plant performance improvement. © 2017 Elsevier Ltd
Aghaabbasi N.,University of Jiroft
Research Journal of Applied Sciences | Year: 2016
The goal of this study is reviewing the effects of oil shocks on economic growth in eight selected countries of Middle East. Firstly by using of hoodric-prescott Filter method the oil price was calculated and then the effect of oil price shocks on the variants was estimated by application of VAR. On the basis of the results all these countries except Saudi Arabia has negative reaction to the shocks imposed by oil price. The most reaction by the shocks were due to the variants that it made the most impress on Kuwait and the least effect was related with Saudi Arabia, also the most explanative of oil shocks in growth differential were about Iran, Qatar and Iraq while the least rate returns to Lebanon and Bahrain. The most share belongs to Bahrain by 100% at the beginning of the period that this volume decreases during the period and after that Iran by 91.58 locates in the second rank. © Medwell Journals, 2016.
Razavi R.,University of Jiroft
International Journal of Applied Chemistry | Year: 2016
Due to the various uses of crown ethers in different fields such as nanotechnology, medicine, agriculture, separation of metals, etc., it is essential to identify and investigate the crown ether structures and substituent effect on their solubility so as to enhance their usage. Therefore, the aim of this study is to investigate the theory of substitution effect on the solubility of crown ethers (12-crown-4) and accordingly select the most appropriate substituents. The first step to accomplishing this goal involved designing the selected molecules followed by the optimization of these molecules using the computational software in the gas phase. Several electron-withdrawing and electron-donating substituents were connected to the molecule and subsequently optimized in the gas and solution phases in the presence of various solvents. This was followed by the computation of energy and dipole moment. A comparison of these values revealed that the bromine substituent possessed the highest energy stability while the chlorine substituent has the highest dipole moment. Moreover, the aqueous solvent has the greatest impact on the ethers' energy and dipole moment.
Mohammadi U.,University of Jiroft
UPB Scientific Bulletin, Series A: Applied Mathematics and Physics | Year: 2015
In this paper, the concept of weighted entropy function for dynamical systems on compact metric spaces is introduced using the generator notion. It is proved that this concept is an extension of the Kolmogorov-Sinai entropy. The independence of weighted entropy function of generators is proved. The persistence of weighted entropy function under a topological conjugate relation is deduced. A version of Jacobs Theorem concerning the entropy of a dynamical system is given. Moreover it is shown that weighted entropy function generates the Kolmogorov-Sinai entropy as a special case.
Momeni-Khabisi H.,University of Jiroft
Journal of Solid Mechanics | Year: 2017
In this paper, static and free vibrations behaviors of the orthotropic functionally graded material (FGM) plates resting on the two-parameter elastic foundation are analyzed by the a mesh-free method based on the first order shear deformation plate theory (FSDT). The mesh-free method is based on moving least squares (MLS) shape functions and essential boundary conditions are imposed by transfer function method. The orthotropic FGM plates are made of two orthotropic materials and their volume fractions are varied smoothly along the plate thickness. The convergence of the method is demonstrated and to validate the results, comparisons are made with finite element method (FEM) and the others available solutions for both homogeneous and FGM plates then numerical examples are provided to investigate the effects of material distributions, elastic foundation coefficients, geometrical dimensions, applied force and boundary conditions on the static and vibrational characteristics of the orthotropic FGM plates. © 2017 IAU, Arak Branch.
Sardou I.G.,University of Jiroft |
Goroohi A.,University of Jiroft
IET Generation, Transmission and Distribution | Year: 2017
Day-ahead market clearing is usually executed by independent system operator to determine the accepted energy and reserve bids and their payments. In this study, an effective multi-objective stochastic framework is presented for joint energy and reserves market clearing problem considering the power system security. To this end, the 24 h scenarios are generated using the Monte Carlo simulation (MCS). Besides, a scenario reduction technique is also presented to reduce the computational burden of the proposed stochastic market clearing procedure. A new validation method based on MCS which is called MCVM method is proposed to verify the proposed strategy against the deterministic model. Direction scalarisation method (DSM) is proposed to solve the proposed multi-objective problem. A new method as the combination of gravitational search algorithm and primal-dual interior point method is employed to solve the proposed single-objective optimisation problem obtained by the DSM. IEEE 24-bus test system is used to address the effectiveness of the proposed framework. © The Institution of Engineering and Technology.
Kor N.M.,Islamic Azad University at Baft |
Ziaei N.,University of Jiroft
Asian Journal of Animal and Veterinary Advances | Year: 2012
Reproductive management has an important role in animal production; therefore, the objective of this study was to determine the effect of different dosages of equine chronic gonadotropin (eCG) on reproductive performance of mature Raini goats during the breeding season. One hundred Raieni goats (42±2.5 kg) were randomly allocated to five groups to receive different dosages of eCG; (0 IU as control group; and other treated groups received 350, 450, 550 and 650 IU of eCG respectively). The interval to onset of estrus was detected by using five aproned bucks. Oestrus was induced by prostaglandin and occurred 24 to 48 h after the second injection. The results showed the estrus incidence rates were not significantly different between groups (p>0.05). The pregnancy rates were 90, 90, 95, 100 and 85% in treatments and control group, respectively, with the pregnancy rate in 550 and 650 IU groups being significantly higher than the other groups (p<0.05). Twinning rates were higher in treated goats (55, 58 and 65%) than in controls (36%, p<0.05). The results of the present study show that eCG treatments increase the twinning rate in Iranian Raieni goats. © 2012 Academic Journals Inc.
Seyedi N.,University of Jiroft
Transition Metal Chemistry | Year: 2013
In this investigation, glycerol and [Fe(III)(salen)]Cl as a green catalyst system were used in multicomponent reactions for the synthesis of bis(indolyl)methanes, 3,4-dihydropyrimidinones, and 1,4-dihydropyridines, respectively. Excellent product yields and short reaction times were achieved. © 2012 Springer Science+Business Media Dordrecht.
Ziaei N.,University of Jiroft
Journal of Applied Animal Research | Year: 2015
The aim of this study was to investigate the effect of selenium (Se) and vitamin (vit) E supplementation on reproductive indices and biochemical metabolites in Raieni goats. Ninety adult Raieni goats, weighing 43 ± 2.5 kg and with a body condition score of 3.5 ± 0.1, were randomly allocated into nine groups which entered into an experiment with 3 x 3 factorial design. The experimental diets consist of three levels of se (0.0, 0.3 and 0.5 mg/kg of feed) and three levels of vit E (0.0, 20 and 50 mg/kg of feed). At the end of the experiment, blood samples were collected from the jugular vein of all goats into 10-ml vacuum tubes (venoject). Serum was recovered by centrifugation (10 m at 3000 rpm) and stored at -20°C until assayed for the concentration of biochemical metabolites (glucose, cholesterol, triglycerides, low-density lipoprotein (LDL), high-density lipoprotein (HDL), total proteins, albumin and T3 and T4). The results of this experiment revealed that supplementation of diets with Se or vit E had no significant effect on biochemical metabolites or reproductive traits. However, the interactive effect of Se and vit E on reproductive indices was significant (P < 0.05), with goats fed diets containing 0.5 mg/kg Se and 20 mg/kg vit E, giving birth to heavier kids compared to those which received the other dietary treatments. © 2014 Taylor & Francis.
Akbari A.,University of Jiroft
Tetrahedron Letters | Year: 2016
The magnetic ionic liquid, tri(1-butyl-3-methylimidazolium) gadolinium hexachloride, ([bmim]3[GdCl6]), has been used as an efficient green catalyst for the one-pot synthesis of 1,2,4,5-tetrasubstituted imidazoles via the condensation of benzil, an aromatic aldehyde, aniline, and ammonium acetate. Good to excellent yield, mild reaction conditions, as well as ease of operation and work-up are some advantages of the protocol. © 2015 Elsevier Ltd. All rights reserved.