Title UNSTEADY MHD FREE CONVECTION FLOW IN A POROUS MEDIUM WITH CONSTANT MASS DIFFUSION AND NEWTONIAN HEATING
Paper ID wdRRr
KeywordsFree convection; MHD; Porous medium; Mass diffusion; Newtonian heating; Exact solutions.
Abstract
Read more…

The unsteady magnetohydrodynamic (MHD) free convection flow past an oscillating vertical plate in a porous medium with constant mass diffusion and Newtonian heating is investigated. Governing equations with given initial and boundary conditions are solved using the Laplace transform technique. The results for velocity are graphically shown whereas the skin friction are presented in tabular forms.

Access Full Text (PDF)

Title Inspection copper concentrate bio leaching with 10 percent of Solid in pulp and effective factors
Paper ID onLba
KeywordsKey words:\nCopper bio leaching, copper concentrate bio leaching, bio leaching
Abstract
Read more…

Abstract\nThis paper is inspection copper concentrate bio leaching with 10 percent pulp and effective on that and comparison that with another percents of pulp.\nRecovery with concentrate 1 percent solid of pulp in air lift reactor by thermopile bacteria (Acid anus Brilly)\nis 96.6 percent after 96 hour (4day) but recovery in 10 percent solid of pulp is 73 percent after 326 hour(14day). The copper value is 30 percent in copper concentrate that this value extraction until limit 14percent by chemical leaching and remainder by bacteria leaching.

Access Full Text (PDF)

Title Preparation of Iran oil-rich zones; emphasizing environmental issues
Paper ID n64Ns
Keywordsoil, environment, preparation, the nature, ecology
Abstract
Read more…

Oil industry has a very old history in world. The oldest civilization has been in Nile Valley, Tigris and Euphrates, and in China. Historical documents and explorations of archeologists indicate that, mentioned people have been familiar to oil from ancient times. 4000 years BC, people of Tigris and Euphrates used to apply asphalt as the mortar in building. They used to also apply the asphalt to prevent water influence; coating ship and boats; as fuel; and to treat some diseases. Among treatment applications of oil one can mention skin diseases, Rheumatism, and other diseases. In Iran, explorations have indicated that, Iranian society used to apply asphalt as mortar in buildings since 5 or 6000 years ago. They used to also apply asphalt for installing and connecting jewelries and ceramic dishes; and coating boats and so on. The main objective of the present study is to preparing Iran oil-rich zones, emphasizing environmental issues. Necessity of considering environmental issues in oil industry and relevant industry would become clearer, when people find that achieving industrial sustainable development would be impossible without considering environmental issues. Problems of environmental pollution, induced by oil and its products, have gained special position in environmental issues at the world currently. Negative pressure of the problem has made critics to attend different discussions in this regard.

Access Full Text (PDF)

Title A Hybrid Fish Swarm based Differential Evolution Approach for Vibration Control of Vehicle Active Suspension System
Paper ID r0DeW
KeywordsVehicle active suspension system, PID, Bio inspired optimization, Fish swarm optimization, Differential evolution, Hybridization, FSODE, Vibration control.
Abstract
Read more…

This paper uses the hybridization of one of the bio inspired optimization techniques called Fish Swarm Optimization (FSO) with the Differential Evolution (DE) algorithm to find the optimal parameters of the Proportional, Integral and Derivative (PID) controller when used for vibration control of Vehicle Active Suspension System (VASS). The performance comparison is made between the FSO, DE and proposed hybrid FSO based DE (FSODE) algorithms with the time responses of the VASS. Simulations of passive system, active system amid PID controller with and without optimization are performed for dual bump road input disturbances using MATLAB/ SIMULINK. The simulation results show that the FSODE algorithm works well for tuning of PID compared to other algorithms in reducing the body acceleration of VASS due to the rapidity of convergence.

Access Full Text (PDF)

Title A Cytogenetic Study on Some Perennial Trigonella (Fenugreek) in Iran
Paper ID hVwHt
Keywordstrigonella, cytogenetic, chromosome, Stebbins’ table, dendrogram
Abstract
Read more…

Trigonella (Fenugreek) is a plant in the family of Papilionaceae. Its origin is Iran and west Asia and then, it has been taken to other parts of the world. At present, it is grown in most European, Asian and African countries. The research cytogenetically studied some perennial trigonella (fenugreek). It was assessed as a case study in Iran. After germination of seeds, the root apical meristem was used for karyotypic studies. Then, it was stabilized, hydrolyzed and stained. At the next stage, the microscopic sample was provided and the morphology of chromosomes was studied. The results showed that all assessed genotypes were diploid with 2n=2x=16 and the chromosomal basis of x=8. At the next stage, genomes including length of long and short arms of chromosome, the ratio of long arm to short arm and the ratio of short arm to long arm were analyzed. Then, the results were studied through Levan’s (et al.) table, the types of chromosomes were identified and Karyotypic symmetry of species was assessed according to the Stebbins’ method. According to the Stebbins’ bilateral table, genotypes of 460 (T.elliptica, Zanjan, Iran), 770 (T.elliptica, Avaj-Qazvin, Iran) and 5310 (T.elliptica, Shurjestan-Fars, Iran) were classified as group 1A (IA), the genotype of 162 (T.elliptica, HosseinAbad-Fars, Iran) was classified as group 2A, and finally, the genotype of 76 (T.elliptica, Gazal Park-Tehran, Iran) was classified as group1B. Genotypes plot showed similar results regarding the parameters of A1 and A2 and Stebbins’ table symmetry classes. At the end, the proximity and remoteness of studied species was chromosomally identified and the results were presented as dendrogram.

Access Full Text (PDF)

Title IMPACT OF LOCATION BASED ATTACKS ON GEOGRAPHICAL ROUTING PROTOCOL
Paper ID MwcDy
KeywordsLocation based routing, Location information, Active attack, Passive attack, and Impacts.
Abstract
Read more…

Several applications of mobile ad hoc network select geographical routing especially Greedy Perimeter Stateless Routing (GPSR) protocol due to its scalability, efficiency and ability to support location based applications. However, there are many security issues in protecting location informa-tion and this information can be easily abused by the attackers. The location based adversarial activities affect the network performance. There are only few works on the literature that studied the impact of the location based attacks in the geographical routing. This work analyzes the impact of malicious nodes on the GPSR performance associated with fake location data in-depth. This work initially identifies a set of possible location based attacks and analyzes the local problems that arise from the location based adversarial activities. This work mainly focuses on active and passive attacks on the GPSR. Later, it explains the impacts of these attacks on the network performance. Finally, it demonstrates the global impact on the routing performance through simulating the network with attack scenarios. This study demonstrates the significant impact of the location based adversarial activities on the performance of the GPSR in terms of packet delivery ratio, overhead, average end-to-end delay, routing loops, packet dropping probability, and location error rate. The simulation results concluded that the overall routing performance degrades, depending on the type and percentage of adversaries.

Access Full Text (PDF)

Title A short remark on body size trends along vertical gradient in sea
Paper ID OPuKp
Keywordsglobal warming, allometric scaling, body size , temperature
Abstract
Read more…

Morita studied body size trends along vertical gradient(K. Morita, Fisheries Oceanography, 20, 2011, pp.258–262). This paper further reveals that his experimental result gives a strong link between global warming and animal’s body-size change, body size correlates positively with sea depth and negatively with water temperature, and individual abundance decreases with increasing sea depth.

Access Full Text (PDF)

Title On animal’s body length vs altitude
Paper ID Q92gB
Keywordsmetabolic rate; body size; allometric scaling
Abstract
Read more…

Temperature can greatly affect metabolic rate of animals. This can explain interesting phenomena that body size changes with altitude. A simple relationship between the body length and altitude is obtained using allometric scaling.

Access Full Text (PDF)

Title The role of b-value diffusion imaging and ADC imaging technique, in combination with subsequent breast dynamic contrast injection in benign and malignant breast lesions
Paper ID fdStx
Keywordsbreast lesions, MRI, diffusion orientation techniques, benign and malignant masses.
Abstract
Read more…

Summary\nResearch Objective: The purpose of this research is to improve the diagnostic accuracy of breast masses by adding technique in routine MRI of the breast trend -diffusion technique, to provide a statistically significantly higher sensitivity in the differential diagnosis of other benign lesions bad gleet breast . \nMethods: In this study 32 patients aged 17 to 72 years, the mass was confirmed by mammography and ultrasound, were studied in 45 tumors that were of Pathology, 10 and 35 mass malignant benign tumors reported. All patients underwent imaging tests echo-planar biased diffusion sequence with fat saturation spectrum with b-value of 50, 200, 500 and 800 were used. Stands for the numerical value of the ADC were calculated. \nResults : The most significant malignant tumors, including irregular edges and barbed strengthening of the non- uniform contrast and edge , the TIC pattern break (washout) or stationary (plateau) ADC value less than 1/1 × 10-3mm2 / s , while the smooth margin, enhance the contrast of the smooth , continuous pattern of TIC (persistent) and ADC value equal to or greater than 1/1 × 10 - 3mm2 / s of the benign breast masses were dominant and impressive .\n Conclusions: In this study, sensitivity 86 %, specificity 90 %, positive predictive value, negative predictive value of 95 % and 75 % respectively. Add trend -diffusion technique, the technique increases the property of DCE-MRI of the breast MRI examination in the diagnosis of benign and malignant breast lesions, there to.

Access Full Text (PDF)

Title The Study of Cadmium Metal Effect on the Dry Weight, the Growth and Absorption Amount of Deltoides Poplar Plant Species, Populus Deltoides
Paper ID syY5n
KeywordsAbsorption, Accumulation, Cadmium metal, Populus deltoides
Abstract
Read more…

Heavy elements including cadmium are produced as a result of major urban, industrial and agricultural activities and they cause pollution of natural resources. On the other hand, considering the increasing need for tree planting in Iran, a comprehensive research on fast- growing deltoides poplar species and the role of these plants in absorption of heavy metals including cadmium is essential. In order to achieve to this purpose, after preparing the populous deltoides species plants in flower pots they were irrigated a nutrient solution containing cadmium chloride with 10 mg/kg of concentration for 20 days in two irrigation periods and at the end of this period the dry weight of the aerial organs decreased significantly (P> 0/05). Yet, there was a significant difference between the dry weight of the aerial parts of the treatment and the control but the dry weight of the control root did not have significant difference with the treatment but we observed a reduction in the height after treatment of the plants. Although the results show that there is no significant difference between the soil, the stem, the leaf and the root with concentration of zero (control) and also the leaf and the stem ( treatment) with concentration of 10 and at 95% of confidence level, but there is a significant difference between the stem and treatment root and also between the root and the treatment soil at 95% of confidence level.

Access Full Text (PDF)

Title Synthesise and study of nano structural properties of NiO/PVA nanohybride composites
Paper ID ubfUu
KeywordsOFET, Nano hybride composite, NiO/PVA, Sol-gel method
Abstract
Read more…

This paper reported on the electrical and nanostructural of polymer- based materials in corporation NiO (Nickel oxide) in concentrations of 0.2%, 0.4% and 0.8% by weight of PVA (polyvinyl alcohol) polymer. Nanocrystallites phases and properties were characterized with using X-ray diffraction (XRD), fourier transfer infrared radiation (FTIR), scanning electron microscopy (SEM) and atomic force microscopy(AFM) techniques. Electrical property characterization was also performed with cyclic-voltameter (C-V) technique in TRIS solution (pH = 7.3, with the formula (HOCH2)3CNH2.

Access Full Text (PDF)