Study of Queuing Theory M/M/M and Optimization Services Teller at Retail Banking

The research was conducted at retail banking in order to determine significant differences the average number of customers and the average waiting time in the system and the queue of Split Decision System. As well as the significance and probability of no customers in the system utilization teller services from Split Decision Systems at retail banking. The elected locations for sample were Bank Mandiri Ahmad Yani Branch and Bank Central Asia Sudirman Branch in Pekanbaru. Data was collected with a probability sampling technique by random sampling, so the data were taken at random in the queuing system is running at 10:00 to 12:00 and 13:00 to 15:00 hours on weekdays based on observations. Observation is by observing and measuring the amount of the average customer arrival (x) and the average number of customers served (μ) in a period of time (hours) in the queuing system. The results of the test sample t test showed that there were significant differences in the average number of customers and the utility both in the system and in the queue of Split Decision System. This is indicated the t value is smaller than the table t, and no significant difference on average waiting time and the probability of no customers in both the system and the queue of Split Decision System. This is indicated the t value greater t table is obtained, and for the number of teller enabled to obtain the optimal cost is 7 teller's for a transaction 25 million in the Mandiri Bank.

Design of TiO2 nanorods and nanotubes doped with lanthanum and comparative kinetic study in the photodegradation of formic acid

SSCI-VIDE+CARE:ECI2D+MME:GBE:CGU:HKOInternational audienceLanthanum doped 1D-TiO(2)nanomaterials (nanorods and nanotubes) with tuned structural and textural properties have been evaluated in the photocatalytic degradation of formic acid (FA) under UV conditions. La-doped nanorods and nanotubes calcined at 973 K show interesting photocatalytic properties with respect to La-free nanomaterials. The presence of La inhibits TiO2 crystallite growth and increases the lifetime of photo-generated electron-hole pairs. (C) 2014 Elsevier B.V. All rights reserved

Effect of cerium content and post-thermal treatment on doped anisotropic TiO2 nanomaterials and kinetic study of the photodegradation of formic acid

SSCI-VIDE+CARE:ECI2D+MME:HKO:GBE:CGUInternational audienceIn this work, the design of cerium doped TiO2 nanomaterials with tuned structural and textural properties is reported. The influence of the cerium content of doped TiO2 solids (x = 1 to 5 wt%) on the photocatalytic degradation of formic acid using UV-A light was evaluated.The best photocatalytic activity was reached for 1 wt% of cerium.The effect of post-thermal treatments was also herein highlighted by varying the calcination temperature between 400 degrees C and 700 degrees C for simultaneously doped- and cerium-free TiO2 samples. Characterization was performed by means of nitrogen adsorption-desorption isotherms at 77K, X-ray diffraction, Raman spectroscopy, Photoluminescence (PL) spectroscopy, and diffuse reflectance UV-vis spectroscopy. The presence of Ce limits the growth of TiO2 crystallite sizes during the post-thermal treatment and favors stabilization of the TiO2 anatase phase. The presence of cerium also increases the number of surface defects and transforms them to non-radiative centers able to capture the photogenerated electrons as observed by PL spectroscopy. This would leave photogenerated holes available improving consequentlythe photocatalytic activity for the oxidation of formic acid. Finally, a possible pathway mechanism is proposed to confirm the obtained results. (C) 2015 Published by Elsevier B.V

Immunochromatographic rK39 strip test in the serodiagnosis of visceral leishmaniasis in Tunisia

International audienceThe performance of the rK39 strip test in the diagnosis of Tunisian visceral leishmaniasis (VL) was evaluated and compared with that of immunofluorescent antibody test (IFAT). A total of 929 sera, including 574 from VL patients, 54 from cutaneous leishmaniasis (CL) patients, 42 from patients with other protozoan diseases, 152 from patients with non-parasitic diseases and 107 from healthy controls, were used in the study. The sensitivity and specificity of the rK39 strip test were 87.1 and 94.4%, respectively. Sixteen CL sera showed positive results, suggesting that the rK39 strip test is not restricted to Leishmania donovani complex detection. IFAT was comparatively more sensitive (98.9%) but slightly less specific (90.7%). Despite cross-reactivity shown by CL sera, the rK39 strip test can be recommended for the routine diagnosis of VL in Tunisia, as VL and CL are distinct clinical. entities. (C) 2008 Royal Society of Tropical Medicine and Hygiene. Published by Elsevier Ltd. All rights reserved

Outcome of mucormycosis after treatment: report of five cases

Mucormycoses are serious infections caused by filamentous fungi of the order Mucorales. They occur most often in immunocompromised patients. We report five cases of mucormycosis in patients hospitalized in the Infectious Diseases Department in Sousse – Tunisia between 2000 and 2013. They were 4 males and one female, mean age 60 years. Three patients were diabetic and one patient had acute leukemia. The locations of mucormycosis were rhinocerebral, rhino-orbital, auricular, pulmonary and cutaneous. The Mucorales isolated were Rhizopus arrhizus in 3 cases and Lichteimia in 2 cases. All patients were treated with amphotericin B and 2 patients had, in addition, surgical debridement. Two patients died and 2 kept peripheral facial paralysis