Study of the efficiency of the perydroxan against Penicilliumitalicum and P. digitatum responsible for the decay of fruits of citrus fruits in preservation (Morocco)

Penicilliumitalicum and P. digitatum are the main fungal diseases capable of developing resistance to a wide variety of compounds fungicides of synthesis. This research project is interested in the study of the antifungal activity of a new product said Perydoxan against two phytopathogenic fungi Penicilliumitalicum and P. digitatum attacking the fruits of Citrus fruit in conservation of the Gharb region (Morocco). Different concentrations of Perydoxan have been tested for their inhibitory effects of the mycelial growth and spore germination in vitro and in vivo of P. italicum, and P. digitatum. In addition the mycelial growth of P. italicum was inhibited 100% at the dose of 2.5%. While the germination of the spores of P. digitatum was inhibited to 100% at the dose of 1.5% and for a duration of contact of 25min. This study shows that the Perydroxan presents a significant efficiency on the growth mycilienne and germination of the spores of fungi P. italicum and P. digitaum

Production of bricks with fiber-reinforced alkali-activated desulfurization slag concretes containing carbonated BOF aggregates

Abstract. This thesis investigates the efficiency of using carbonated Basic Oxygen Furnace (BOF) aggregates in different alkali-activated binders such as ladle slag and ground granulated blast furnace slag (GGBFS), and desulfurization (DS) slag. Sodium silicate and different molarities of sodium hydroxide were also used as alkali solution. BOF slag has high free CaO content, which leads to volume expansion problem under normal atmospheric condition. Additionally, free CaO and MgO are the reasons of volume expansion problem in desulfurization (DS) slag. To minimize and control this problem, BOF slags are exposed to CO₂ gas, which improves the volume stability. The aim of the first chapter is to investigate using of carbonated BOF aggregates instead of normal aggregates with GGBFS and ladle slag precursors which activated by alkaline solution. The effects of using different precursor types and contents, aggregate types and contents, and different sodium hydroxide molarities (6M, 8M, and 10M) were determined by assessing the mechanical and mineralogical test. After investigating the efficiency of carbonated BOF aggregates, the goal of the second chapter is to use carbonated BOF aggregate with different precursors types and content such as carbonated and non-carbonated desulfurization (DS) slag and different sodium hydroxide molarities (6M, 8M, 10M, and 12M). The effects of different parameters were carried out by evaluating mechanical, efflorescence, and pH experiments. Based on the results, mixture containing non-carbonated desulfurization (DS) slag with carbonated BOF aggregates and 8M NaOH provided excellent compressive strength compared to using carbonated DS. However, to minimize the efflorescence rate fiber reinforcement was introduced in the next chapter. In the third chapter, the objective is to introduce fiber reinforcement to the selected mix composition, which containing alkali activated desulfurization slag with carbonated BOF aggregates and sodium hydroxide (8 M) to develop strength properties and limits the efflorescence rates. In the mix composition 4% fiber (in mass) was added. The selected four different fibers are basalt, PVA (8mm), Cellulose and Polypropylene (PP). Moreover, 4% and 8% combined PVA and basalt fibers are used. According to the results, it was noticed that basalt and cellulose fibers increased 15% (9 MPa) of the compressive strength compared to reference mixture and reduced the efflorescence compared to other used fibers. In the last chapter, the main aim is to produce the bricks based on the mix compositions using carbonated BOF, desulfurization (DS) slag, and sodium hydroxide (8 M) with basalt and cellulose fibers. The effects of using selected fibers (basalt, cellulose) on the control mixture were conducted by mechanical strength, effects of carbonation, water absorption by capillarity, water absorption by immersion, efflorescence, ultrasonic pulse velocity, drying shrinkage, high temperature, and freeze-thaw test

The Effect of Information and Communications Technologies (ICT) in the Jordanian Universities

This study aimed at identifies the impact of using Information and Communications Technologies (ICT) in the educational process according of teachers, student, principle and parents, the researcher use questionnaire to collect the data sample of the study to (10) professors s and  (10) supervisors were chosen randomly from ten universities in Jordan. The researcher used means, standard deviations the results of the study shows there is impact of using Information and Communications Technologies (ICT) in the educational process on teachers, students, principles and parent

Combined effects of Hall current and variable Viscosity on Non-Newtonian MHD flow past a stretching vertical plate

This paper investigate the effects of Hall currents on free-convective steady laminar boundary-layer flow, past a semi-infinite vertical plate, for large temperature differences . A uniform magnetic field is applied perpendicular to the plate. The fluid thermal conductivity is assumed to vary as a linear function of temperature. The fluid viscosity is assumed to vary as a reciprocal of a linear function of temperature. The usual Boussinesq approximation is neglected. The nonlinear boundary layer equations governing the problem under consideration are solved numerically by applying an efficient numerical technique based on the shooting method. The effects of the magnetic parameter M, the density / temperature parameter n, the thermal conductivity parameter S, the viscosity temperature  are examined on the velocity and temperature distribution as well as the coefficient of heat flux and shearing stress at the plate

A satellite-based personal communication system for the 21st century

Interest in personal communications (PCOMM) has been stimulated by recent developments in satellite and terrestrial mobile communications. A personal access satellite system (PASS) concept was developed at the Jet Propulsion Laboratory (JPL) which has many attractive user features, including service diversity and a handheld terminal. Significant technical challenges addressed in formulating the PASS space and ground segments are discussed. PASS system concept and basic design features, high risk enabling technologies, an optimized multiple access scheme, alternative antenna coverage concepts, the use of non-geostationary orbits, user terminal radiation constraints, and user terminal frequency reference are covered

Zona auriculaire compliqué d’un syndrome vestibulaire invalidant

No Abstract

OSU-AGRANI Bank Rural Deposit Mobilization Experiment

Three models of incentive mechanisms to mobilize rural bank deposits were experimented with between February 1, 1986 and April 30, 1986 in three branches in each of two regions in Bangladesh. One model, the Tangible Incentive Model, was designed to test tangible incentives given to depositors, in addition to the normal interest income, for opening a new account or adding to an existing account and maintaining in those accounts an additional deposit of Tk. 500 or more for at least 90 days. Prize bonds valued at one percent of the eligible deposit balance were given to the depositors. Another model, the Marketing Model, was designed to test the impact of cash incentives paid to two specially appointed Field Assistants in the branch for marketing of bank deposits. The Field Assistants were paid Tk. 150 per month for incidental expenses, and an incentive bonus of one percent of eligible deposits mobilized of Tk. 1000 or more, and 10 or more accounts opened or reactivated. The third model, Employee Incentive Model, was designed to test additional financial incentives given to existing branch staff beyond the benefits currently provided. The branch staff, except the Manager, received the same incentive bonus and at the same rate as the Field Assistants in the Marketing Model. Over 800 new accounts were opened or dormant accounts reactivated in the six branches through the experiment. Total deposits of Tk. 1.4 billion were mobilized by these accounts. These deposits ranged from one percent to over eight percent of the branch's existing deposit base. The increase in number of accounts ranged from over one-half of one percent to almost thirteen percent of the branch's existing number of accounts. The Tangible Incentive Model produced the most cost effective result in generating new deposits and deposit accounts at the lowest cost per taka or per account mobilized. This model clearly shows that rural deposits can be mobilized by direct incentives. The overall implication of the experiment is that banks can mobilize rural deposits if serious efforts are made to reach this objective with appropriate incentive schemes