Islamic Azad University North Tehran Branch

About: Islamic Azad University North Tehran Branch is a education organization based out in Tehran, Iran. It is known for research contribution in the topics: Adsorption & Catalysis. The organization has 868 authors who have published 968 publications receiving 9987 citations.

Economic Geology, Petrology and Environmental of Copper Ore Deposits of Chagho in South West Karaj

Abstract: The mineral zone under study is 32 square kilometers located in Chagho village, Akhtarabad village, Malard county, Shahriar city, Tehran province. This area is part of the Urumieh-Dokhtar Volcanic Belt. The age of the studied rocks is related to the Eocene and younger than the Eocene. The downward trend of some oxides of major elements such as MgO, CaO and AL2O3 and the increasing trend of K2O and Na2O over SiO2 from the basaltic rocks to the intermediate-acidic rocks in rocks of the studied area are consistent with the magmatic subduction process. Based on standardized radar charts relative to chondrite of the rocks under study, enrichment of elements (LILE) such as Cs, Rb, Ba and light rare earth elements (LREE) relative to HFS elements (Ti, Nb) and heavy rare earth elements (HREE) (Y, Yb, Lu) is shown. In all of the rocks mentioned above, the element u is enriched relative to the primary mantle. The positive anomaly of this element may indicate contamination of their constituent melts with the upper crust. In all studied rocks, HFS elements such as Ti, Nb show depletion and concave pattern. The depletion of the aforementioned elements to the primary mantle may be attributed to the contamination of the melts with lower and upper crustal or possibly the dependence of the melts constituting these rocks on the geodynamic environments of subduction of Neo-Tethyan. According to the study of fluids involved in the region, the temperature of homogenization with the temperature of formation of copper veins is between 120 and 306 ° C, and the salinity percentage varies from 6.45 to 15.96 wt% of sodium chloride. Accordingly, this ore deposit is classified as mesothermal and is a type of hydrothermal allogenic deposits, the presence of sub-faults and seams and gaps in the host rock as a low-pressure environment has provided a suitable site for vein-type mineralization

Data Gathering Based on Nodes’ Credit in Wireless Sensor Network

Abstract: For data gathering in wireless sensor networks, sensors extract useful information from environment; this information has to be routed through several intermediate nodes to reach the destination How information can effectively disseminate to the destination is one of the most important tasks in sensor networks Problem arises when intermediate nodes fail to forward incoming packets Due to limited power and slow processor in each node, algorithms of sensor networks must be designed carefully Directed Diffusion (DD) is a typical data-centric algorithm which has been used to provide efficient data transmission We enhance this algorithm based on nodes’ credit by using five factors Simulation results show that our proposed algorithm is more energy efficient and reliable than DD and has the ability of traffic load distribution

Prediction of the New Tech in the Energy Economics of Petroleum, Gas and Petrochemical (Case Study: National Iranian Petrochemical Co. of Kermanshah, Shazand and Tabriz)

Abstract: In this paper, a comprehensive concept of the effect of new technology on the energy economics of petroleum, gas and petrochemistryis proposed. The roadmap of development, the tools of the main method, elements, the main challenges and weak points are discussed. The treasury of stock exchange allows the energy economics to have a criterion for the policies of the government, a common landscape for the various beneficiaries, reinforcement of the research and development based upon the new technology of the energy sector. Three case studies (national firm of petrochemical industry of Kermanshah, shazand and Tabriz) from ETF in world market is proposed to illustrate the conceptual approach. This article is under the special attention of researcher, deciders and the commission of studies to promote their policies. article History

Detection of pap G Gene in Enteropathogenic Escherichia Coli (EPEC) Strains Isolated from Urine and Blood of Hospitalized Patients' in Khorramabad City, Iran

Abstract: Background and Objective: Escherichia coli (E-coli) is a normal gram negative organism that inhabit the human and animal intestinal tract. Pap G gene has an important role in creating P -fimbriae tip and in producing septicemia and urinary tract infection. The aim of this study was to investigate the presence of pap G gene in EPEC strains isolated from urine and blood. Materials and Methods: From March to October 2013, 90 colonies of urine and blood samples suspected to Escherichia coli were collected. The identity of isolates was determined by standard biochemical tests. Their antibiotic resistance pattern was detected by susceptibility disk diffusion method (Global standard CLSI) and the frequency of pap G gene was examined by Multiplex PCR and pap G positive isolates were serotyped against O antigen. Results: From 90 suspected colonies of urine and blood, 72 (80%) cases found to be E- coli. Out of 72 cases, 65 (90.27%) cases were isolated from urine and 7 (9.73%) cases isolated from blood. 30 out of 72 samples were positive for pap G (II, III) gene. Five out of 30 (16.6%) cases were found to belong to O26, O128, O125, O114 and O55 EPEC strains. Conclusion: In this study, the pap G (II, III) gene was observed in the isolated enteropathogenic E- coli from the hospitalized patients' urine and blood samples. Therefore, entropathogenic strains of E-coli can also cause urinary tract infections and septicemia similar to uropathogenic strains which having pap G gene and P- fimbriae tip.