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.

Colorful ESL Test Papers And Spatial Intelligence: Should One Simply Throw Paint on Exam Papers to Ameliorate them in the Eyes of Spatially Intelligent Candidates?

Abstract: The purpose of this research was to find out whether introducing color as an element which may appeal to spatiallyintelligent candidates affects their performance on ESL grammar tests. 52 participants were given two parallel grammar tests, one in black and white and the other bearing the full spectrum of colors in the natural daylight. In order to identify the candidates with visual-spatial learning style, the participants and their teachers were asked to respond to VisualSpatial Identifier rating scale. Based on the results, no significant relationship was found between the performance of candidates on the colorful and black and white grammar tests and their visual-spatial intelligence. It was concluded that other variables including the method of applying colors, the type and combination of colors as well as the differential impact of different colors on candidates with different cultural backgrounds needed to be addressed before any conclusions can be drawn about the application of color in language assessment.

(2,2'-Bipyridine)(pyridine-2,6-dicarboxyl-ato)oxidovanadium(IV) ethanol monosolvate.

Abstract: In the title compound, [V(C7H3NO4)O(C10H8N2)]·C2H5OH, the VIV atom exhibits a distorted octa­hedral coordination environment formed by two pyridyl N atoms of 2,2′-bipyridine (bpy), the vanadyl O atom, and two carboxyl­ate O atoms and one pyridyl N atom of the tridentate pyridine-2,6-dicarboxyl­ate (pydc2−) ligand. The pyridyl N atom of the pydc2− anion and one pyridyl N atom of bpy occupy the axial positions. O—H⋯O hydrogen bonds involving the ethanol solvent mol­ecule as donor and a carboxyl­ate O atom as acceptor atoms, as well as C—H⋯O hydrogen bonds, together with π–π stacking inter­actions between adjacent aromatic rings (average centroid–centroid distance = 3.577 A), seem to be effective in the stabilization of the crystal packing, resulting in the formation of a three-dimensional structure.

Distribution of SCCmec Types in Methicillin-Resistant Staphylococcus aureus Isolated from Burn Patients

Abstract: Background: Methicillin resistance Staphylococcus aureus (MRSA) isolates have been recognized as one of the most important causes of infection in burn patients that have recently shown a frequent and rapid development of antibiotic resistance. Objectives: The present study described the distribution of different SCCmec types and antibiotic resistance pattern among MRSA strains isolated from burn patients in a referral burn center in Tehran, Iran. Methods: During a 12-month study, 189 MRSA isolates were obtained from burn patients. Standard culture and biochemical tests were used for identification of MRSA isolates. The antibiotic susceptibility testing was performed using disc diffusion method and the presence of mecA, nucA, pvl, and tst encoding genes was determined using PCR method. In addition, the different SCCmec types were determined using multiplex PCR. Results: All the MRSA isolates were observed to be resistant to amoxicillin and penicillin and sensitive to linezolid, teicoplanin, and vancomycin. The rates of resistance to other antibiotics varied from 86.2% for amikacin to 17.5% for quinupristin-dalfopristin. MDR was observed in all the isolates. Six different antimicrobial resistance patterns were observed among our isolates. Based on the multiplex PCR assay, the two different SCCmec types were detected as 71.4% type III and 28.6% type IV. In total, 8.5% of isolates harbored pvl toxin encoding gene all of which belonging to SCCmec type IV. Furthermore, 33 isolates (17.5%) harbored tst encoding gene. Conclusions: The results showed low diversity of SCCmec type among circulating MRSA in the burn center with relatively high prevalence of SCCmec III. These findings support the need for more studies to elucidate distribution of different SCCmec types among MRSA isolated from burn patients.

Urban Resilience and Its Relationship with Urban Poverty

Abstract: Throughout history, natural hazards and disasters have always caused disturbance in the dynamics of urban systems, which represents a lack of adequate resilience in communities against nat...