Volume 2 Issue 3
Author's Name: Shaza Alturky and George Albert Toma
Abstract—This paper presents a genetic programming algorithm with multiple trees representation to find the analytical solutions for system of nonlinear boundary value problems. An individual in multi-tree genetic programming comprises multiple trees, and each tree has two numbers, M that indicates the maximum depth of tree and P that indicates the number of differential equations in the system. Numerical results presented in this work illustrate the applicability and effective of the multi-tree genetic programming as an optimization method has been applied as an alternative to traditional methods.
Author's Name: Ibrahim Isah, Salisu I. Kunya, Sani Abdulkarim
Abstract—We presented the first principle study of semiconductor-metal phase in Calcium Chalcogenides (CaS and CaSe). The calculations were based on density function theory (DFT) within generalized gradient approximation (GGA). The result of equilibrium parameters is a good agreement with the available literature. We investigate the stability of the compound as pressure is induced and we found out that, the compounds cannot withstand pressure above 34GPa and 28.6GPa for CaS and CaSe, without distortion. We found out that, there is transformation, semiconductor-metal phase transformation for these compounds at pressure of 95GPa and 68GPa for CaS and CaSe respectively.
Author's Name: Amirhossein Jahromi
Abstract—Improper and inappropriate use of antibiotics is one of the possible factors affecting the transmission of antibiotic resistance is Because Pseudomonas aeruginosa is one of the most serious pathogenic bacteria in hospital environments and resistant It is an antibiotic that causes problems in treatment. This study aims to determine multiple resistances Pseudomonas has been treated with antibiotics, arsenic and metals. Materials and Methods In this study, 23 strains of Pseudomonas aeruginosa were isolated from clinical specimens. for review Resistance of these bacteria to penicillin antibiotics was used by Kirby-Bauer method. The minimum concentration C.I.M. (and minimum lethal concentrations (C.B.M.) of antibiotics and heavy metals (cadmium, mercury) and arsenate Tubal dilution, agar and growth were performed in agar plate, respectively. Results In this study, the highest and lowest MIC values obtained in Pseudomonas aeruginosa for metals, respectively. * 8 and 3 cadmiums (0.6 and 4.9 μg / ml), mercury (<0.12 and 4 μg / ml) and arsenate (10 × were 256 μg / ml). Of 23 strains, 84% to the antibiotic carbonicillin, 63% to piperacillin and 100% to 103 Arsenic and cadmium were resistant. Also, 82.6% of the strains were resistant to mercury. Conclusion The results of this study showed that Pseudomonas aeruginosa strains have multiple resistance to arsenic, metals and the antibiotics are car penicillin and piperacillin, respectively.
