Fabrication and Characterization of Graphite Oxide Based Field Effect Transistors For Non­ Enzymatic Glucose-Sensor Application

Graphite-oxide based metal–oxide–semiconductor field-effect transistors (MOSFETs) were fabricated and used as glucose sensor. Herein, graphite-oxide was assembled between two planer electrical electrodes. The sensitivity of the sensor has been enhanced by adding copper (Cu) or silver (Ag) nanoparticles. The nanoparticles were produced by sputtering and inert gas condensation inside an ultra-high vacuum compatible system, and they were self-assembled on the graphite-oxide. The sensitivity of the sensor was increased by an order of magnitude when the silver nanoparticles were added. The sensitivity of each MOSFET was studied at different concentrations of non-enzymatic glucose for potential use in medical and industrial applications

Adsorption of uranium and thorium on new adsorbent prepared from Moroccan oil shale impregnated with phosphoric acid

Attention has been focused recently on the production of new adsorbents from Moroccan oil shale of Tarfaya (layer R3) by chemical activation with phosphoric acid and its application in wastewaters treatment. The optimal conditions for the preparation were searched and the tests of adsorption of uranium and thorium ions were affected. The best product was obtained by used of the ratio of activated agent/precursor equal 3 and activation of the mixture in air at 250°C during two hours after prepocessing at 120°C in air. Under these conditions the maximal adsorption capacity of methylene blue and specific area (SBET) of the new adsorbent were 526 mg/g and 630 m2/g, respectively. A batch mode experiment was used to explore the performances of this adsorbent for the removal of the U and Th from aqueous solutions prepared from UO2(NO3)2.6H2O and Th(NO3)4.5H2O. The adsorption parameters for the two radioelements were determined by application of the Langmuir, Freundlich and Elovich models

Owner awareness and knowledge of canine leptospirosis as a zoonotic disease in Morogoro, Tanzania

Background: Leptospirosis is a neglected disease of worldwide distribution, affecting both human and animals caused by infection with pathogenic species of the genus Leptospira. This study was carried out to determine the awareness of canine leptospirosis among dog keeping communities in Morogoro, Tanzania.Methods: Awareness among dog owners for canine leptospirosis was assessed using semi-structured questionnaire among randomly chosen dog owners in Morogoro, Tanzania. Information sought from the dog owners included: awareness of dog diseases in general and specifically canine leptospirosis; clinical signs, transmission, treatment, prevention, and awareness that canine leptospirosis is zoonotic.Results: A total of 124 dog owners participated in the study. Of these, 90% were not aware of the existence of canine leptospirosis. Fifteen percent of the participants were not aware that dogs could get disease. The majority of the respondents (98.4%; n=122) did not know the clinical signs of leptospirosis in dogs. The few (1.6%) who knew mentioned jaundice, bloody diarrhoea, blood in urine, loss of appetite and vomiting as the clinical signs of leptospirosis in dogs. None of the respondents knew how canine leptospirosis is treated, or that the disease is a health risk to humans. Only one respondent (0.8%) knew that the control of canine leptospirosis could be achieved through vaccination.Conclusion: The findings of this study indicate there is little awareness of canine leptospirosis and its potential public health risk among dog owners in Morogoro, Tanzania. The findings of this study indicate the need to raise awareness of the disease among the dog owners and the general population.

The continuous intention to use e-learning, from two different perspectives

During the recent vast growth of digitalization, e-learning methods have become the most influential phenomenon at higher educational institutions. E-learning adoption has proved able to shift educational circumstances from the traditional face-to-face teaching environment to a flexible and sharable type of education. An online survey was conducted, consisting of 30 teachers and 342 students in one of the universities in the United Arab Emirates. The results show that teachers’ and students’ perceived technology self-efficacy (TSE), ease of use (PEOU), and usefulness (PU) are the main factors directly affecting the continuous intention to use technology. Instructors’ technological pedagogical content knowledge (TPACK) and perceived organizational support (POS) positively affect the intention to use the technology, whereas students’ controlled motivation (CTRLM) has a greater influence on their intention to use the technology, due to the type of intrinsic and extrinsic motivation that they have and which they can develop throughout the process of learning. The findings support the given hypotheses. In addition, they provide empirical evidence of a relationship between perceived organizational support and perceived pedagogical content knowledge. In fact, they are considered the key factors that support the use of technology continuously

Impact de la Digitalisation sur la Performance Bancaire dans la Prévention et la Lutte contre le Blanchiment de Capitaux

The role that digital technology plays in the prevention and fight against money laundering in the banking sector has become fundamental. The introduction of new digital practices in the financial security industry has become an absolute necessity for banks. Multiple automated financial security programs would, for instance, allow banks to save time by optimizing the process of prevention and fight against money laundering. It is in this perspective that we formulate our problematic, namely: "Does the digitalization of programs within the financial security department contribute to the banking performance in terms of prevention and fight against money laundering?" In this perspective, we will analyze in a first axis, through a literary review, the digitalization of banking, its tools, its contributions as well as its limits in terms of prevention and fight against money laundering. Then in a second axis, we will opt for a qualitative study in the form of an interview in order to analyze the contribution of the digitization of automated programs in the prevention and fight against money laundering in financial security service. And to conclude, we will evaluate the impact of digitalization on the banking performance in terms of prevention and fight against money laundering through the results obtained from the interviews conducted.Aujourd’hui, le rôle que joue le digital dans la prévention et la lutte contre le blanchiment de capitaux au secteur bancaire s’avère inéluctable. L’introduction de nouvelles pratiques numériques au service de la sécurité financière est devenue absolument une nécessité pour les banques. Notamment, offrir de multiples programmes automatisés au service de la sécurité financière, ce qui permettrait à la banque de gagner du temps en optimisant le processus en matière de prévention et de lutte contre le blanchiment de capitaux. C’est dans cette optique, que nous formulons notre problématique à savoir : « Dans quelle mesure, la digitalisation des programmes au sein de service de la sécurité financière contribue-t-elle à la performance bancaire en matière de prévention et de lutte contre le blanchiment de capitaux ? ». Dans cette perspective, nous allons lancer la lumière dans un premier axe sur la digitalisation bancaire, ses outils, ses apports ainsi que ses limites en matière de prévention et de lutte contre le blanchiment de capitaux à travers une revue de littérature. Puis dans un deuxième axe, nous allons opter pour une étude qualitative, sous forme d’entretien afin d’analyser la contribution de la digitalisation des programmes automatisés en matière de prévention et de lutte contre le blanchiment de capitaux au service de la sécurité financière. Et pour conclure, nous allons évaluer l’impact de la digitalisation sur la performance bancaire en matière de prévention et de lutte contre le blanchiment de capitaux à travers les résultats obtenus des entretiens réalisés