In this paper the flux density components in the eccentric slotted surface mounted PM Vernier machine are obtained analytically at on-load and no-load conditions. In the modeling process some conformal transformations, including Schwartz Christoffel and bilinear transformations are applied. In addition, the Laplace solution is used to obtain the air gap flux density of the PMs and the armature reaction. To overcome the limitations of existing conformal transformation-based models, the concept of equivalent magnetization current and the uniqueness theorem are adopted. In the provided model, the air gap flux density, the machine cogging torque and the electromagnetic torque are obtained analytically. Finally, the obtained results are compared with the results of finite element analysis.

Background and Objectives: Carbapenem-resistant Acinetobacter baumannii has recently been identified by the World Health Organization as a critical pathogen. We propose to characterize the molecular characteristics of clinical isolates of A. baumannii resistant to carbapenems collected in a Moroccan hospital. Materials and Methods: Seventy carbapenem-resistant A. baumannii isolates from various samples were received at the mi-crobiology laboratory of the Hospital Center. Antibiotic susceptibility was tested by the diffusion disc method and molecular characterization of antimicrobial resistance was performed by PCR and sequencing. Results: Carbapenemase genes were detected in our isolates: the OXA-51 gene and the ISbA1 sequence were detected in all isolates (100%), the OXA-23 and OXA-58 genes were detected in 82. 85% and 10% of isolates respectively, MBL genes were dominated by VIM 39 isolates (55. 7%), followed by GIM 26 isolates (37%), SIM 20 isolates (28. 5%), IMP 8 isolates (11, 4%), NDM 3 isolates (4%) and for the first time in Morocco SPM with 4 isolates (5. 7%). Conclusion: The emergence of resistance of A. baumannii to carbapenems is a serious problem in our hospital which re-quires the establishment of a prevention strategy and strict respect for hygiene to minimize their dissemination.

Deriving a dynamic model based on the coupled-mode and carrier rate equations, the effects of coupling coefficient and corrugation position on all-optical flip-flops (AOFF) we have analyzed in this paper. Also the self phase modulation (SPM) in the distributed coupling coefficient distributed feedback semiconductor optical amplifier (DCCDFB- SOA) has been implemented. Then the effects of SPM on the rise and fall times of the flip-flop DFB-SOA are investigated. It has been shown that the application of the optimized coupling coefficient and corrugation position improves the speed limitation in AOFF significantly. The transfer matrix method (TMM) time domain is utilized for the numerical simulations.