A PROPOSED HABILITATION PROGRAM TO IMPROVE SOME RESPIRATORY SIGNS USING AQUA-AEROBIC EXERCISES TO REDUCE THE INTENSITY AND SEVERITY OF ASTHMA ATTACKS AMONG CHILDREN

The aim of this study was to propose a rehabilitation program using aqua-aerobic exercises and to determine its effect on some respiratory indicators (forced Expiratory Volume in first Second Fev1, Peak Expiratory Flow PEF, and the Forced Vital Capacity FVC), and improve the respiratory functions to reduce the intensity and severity of asthma attacks for asthmatic children. This program was applied to a sample of 09 children with light to severe asthma and who are involved in the Asthma Association in Mostaganem. The application period lasted 20 weeks, with three training units per week. We relied on the experimental approach and used one group as a sample. Moreover we adopted pre and post measurements in addition to interstitial measurements at the end of each month using a Spirolab device. The results showed statistically significant differences between the pre and post measurement in the values ​​of respiratory indicators, in favor of the latter. This proves that aqua-aerobic exercises improve the function and efficiency of the respiratory system, and thus reduce the severity of asthma attacks for asthmatic childre

Fuzzy Information Modeling in a Database System

A Fuzzy logic (FL) provides a remarkably simple way to draw definite conclusions from vague, ambiguous or imprecise information. In a sense, fuzzy logic resembles human decision making with its ability to work from approximate data and find precise solutions. In this paper a fuzzy information modeling system was developed then used in a database, which contains fuzzy data and real data, to create new information assistance capable of making any decision about this data. The proposed system is implemented on a special database used to evaluation workers or users in any formal organizations

Bio-activité des huiles essentielles de l’Armoise blanche Artemessia herba alba : effet sur la reproduction et la mortalité des adultes d’un ravageur des denrées stockées Ephestia kuehniella (Lepidoptera)

Notre travail révèle un effet insecticide de l’huile essentielle extraite de la plante aromatique Artemissia herba alba, sur la population d’insectes ravageurs des denrées stockées Ephestia kuehniella (Lepidoptera). Le bio-pesticide agit avec un double mécanisme d’action. Administré chez les adultes, l’huile essentielle provoque un taux de mortalité significatif par rapport aux témoins. Alors que son administration sur les chrysalides, prolonge leur développement nymphal et perturbe la reproduction des adultes, en prolongeant la période de préoviposition et en réduisant la période de dépôt des œufs puisque les femelles fécondées, ne pouvant vivre plus d’un ou deux jours, ce qui réduit le nombre d’œufs déposés.Bio-activity of essential oils of Artemisia herba alba : effects on reproduction and adult mortality of a pest of stored Ephestia kuehniella (Lepidoptera)Our work reveals an insecticidal effect of essential oils extracted from aromatic plant Artemissia herba alba on population of insect pests Ephestia kuehniella. The biopesticide is adual mechanism of action. Administered in adults, the essential oil causes significant mortality compared with controls. Whilehis administration on pupae, it extending their pupal development and disrupts reproductive adults by extending the preoviposition period and reducing the period for depositing eggs asfertilized females, who can’t live more than one or two days, which reduces the number of eggs deposited

Comprehensive Investigation of Cu2+ Adsorption from Wastewater Using Olive-Waste-Derived Adsorbents: Experimental and Molecular Insights

: This study investigates the efficacy of adsorbents from locally sourced olive waste-encompassing olive skins, leaves, and pits, recovered from the initial centrifugation of olives (OWP)-and a composite with sodium alginate (OWPSA) for the removal of Cu2+ ions from synthetic wastewater. Experimental analyses conducted at room temperature, with an initial Cu2+ concentration of 50 mg/L and a solid/liquid ratio of 1 g/L, showed that the removal efficiencies were approximately 79.54% and 94.54% for OWP and OWPSA, respectively, highlighting the positive impact of alginate on adsorption capacity. Utilizing statistical physics isotherm models, particularly the single-layer model coupled to real gas (SLMRG), allowed us to robustly fit the experimental data, providing insights into the adsorption mechanisms. Thermodynamic parameters affirmed the spontaneity and endothermic nature of the processes. Adsorption kinetics were interpreted effectively using the pseudo-second-order (PSO) model. Molecular modeling investigations, including the conductor-like screening model for real solvents (COSMO-RS), density functional theory (DFT), and atom-in-molecule (AIM) analysis, unveiled intricate molecular interactions among the adsorbent components-cellulose, hemicellulose, lignin, and alginate-and the pollutant Cu2+, confirming their physically interactive nature. These findings emphasize the synergistic application of experimental and theoretical approaches, providing a comprehensive understanding of copper adsorption dynamics at the molecular level. This methodology holds promise for unraveling intricate processes across various adsorbent materials in wastewater treatment applications

Oil-Based Mud Cutting as an Additional Raw Material in Clinker Production

Oil-Based Mud (OBM) cutting is a hazardous by-product generated during oil-well drilling. Its chemical composition suggests that it might be suitable as a raw material in cement manufacturing. It is rich in calcium oxide, silica, and aluminium oxide, which are the major oxides in raw materials for cement manufacturing. In this research, OBM cutting is used as a constituent of the raw meal for cement clinker production. Raw meal mixtures were prepared by mixing different ratios of raw materials increasing OBM content. The impact of the addition of OBM cutting on the resulting clinker has been investigated. The results demonstrate that OBM cutting could be recycled in the manufacturing of Portland cement clinker. Clinker prepared using OBM cutting had very similar properties to that prepared from limestone. This result could represent an opportunity for solving an environmental problem. The addition of OBM cutting lowers the calcination temperature, and increases the rate of carbonate dissociation. However, it also leads to a higher free lime in clinker, which is a result of the presence of trace elements, such as barium. Overall, its use as a raw material in cement production could provide a cost-effective, environment-friendly route for the management of OBM cutting

Anticorrosion behaviour of amorphous silicon-based coatings prepared by remote cold plasma-assisted chemical vapour deposition process

Organosilicon films were deposited on carbon steel samples using remote microwave nitrogen plasma-assisted chemical vapour deposition. The deposits were obtained using TetraMethyDisoloxane monomer mixed with oxygen. The formed films were characterised using electron microprobe analysis, Fourier transformed infrared spectroscopy, contact angle measurements, scanning electron microscopy and atomic force microscopy. The electrochemical properties of the organosilicon coatings were evaluated using gravimetric experiments next to electrochemical tests. A significant increase in the corrosion resistance behaviour of the organosilicon coated carbon steel specimen was found when the samples were immersed in 3% aqueous sodium chloride solutions. Also, the surface pre-treatment process of carbon steel had an important influence on the morphological and electrochemical behaviour. Argon pre-treatment improves significantly the corrosion resistance or organosilicon coated steel samples. Gravimetric tests in particular showed that samples pre-treated with argon result in lower weight loss and decreased corrosion rates compared to interfaces pre-treated with nitrogen plasma. Keywords: PACVD, carbon steel, organ silicon, corrosion, pre-treatment, electrochemical impedance spectroscopy.</jats:p

Purification of H2SO4 of Pickling Bath Contaminated by Fe(II) Ions Using Electrodialysis Process

AbstractWe used in this work electrodialysis (ED) to remove the iron (II) ions of sulfuric acid pickling bath. This technique has proven very useful and effective in our study. Indeed, it allowed us to demonstrate the effect of various parameters (current density, the nature of the membrane and the concentration of Fe (II)) on the efficiency of the electrodialysis process. The results obtained show that the treatment rate increases with increasing the current density in the range 1 to 20mA.cm-2. However, increasing up to 30mA.cm-2 led to a clogging of the membrane, involving a substantial increase in the electrical resistance of the system. Moreover the increase in concentration of iron ions in the feed compartment to 52g.L-1 improves the purification rate 70.17%. The study of the influence of the membrane nature has shown that the CMX membrane more effectively than CMV and two Nafion 117 membranes.In parallel with the treatment process is also studied the possibility to refocus sulfuric acid was studied a removal mechanism iron ions and sulfates of the study define the solution for species that might exist in the system Fe - H2SO4 - H2O. It is clear from this analysis that the purification of the solution (Fe (II) -H2SO4) processing will be based on the elimination of Fe2+ ions and HSO−4−. A purification mechanism of the solution based on the transfer of species through the ion exchange membranes has been proposed