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Search Results: 1 - 10 of 9253 matches for " Ahmed Hajji "
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Modular Spaces Topology  [PDF]
Ahmed Hajji
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.49175
Abstract:

In this paper, we present and discuss the topology of modular spaces using the filter base and we then characterize closed subsets as well as its regularity.

Fixed point theorem and its application to perturbed integral equations in modular function spaces
Ahmed Hajji,Elaidi Hanebaly
Electronic Journal of Differential Equations , 2005,
Abstract: In this paper, we present a modular version of Krasnoselskii's fixed point theorem. Then this result is applied to the existence of solutions to perturbed integral equations in modular function spaces.
Li3Al(MoO2)2O2(AsO4)2
Mounir Hajji,Mohamed Faouzi Zid,Ahmed Driss
Acta Crystallographica Section E , 2009, DOI: 10.1107/s160053680900631x
Abstract: Single crystals of trilithium(I) aluminium(III) bis[dioxidomolybdenum(VI)] dioxide bis[arsenate(V)], Li3AlMo2As2O14, have been prepared by solid-state reaction at 788 K. The structure consists of AsO4 tetrahedra, AlO6 octahedra and Mo2O10 groups sharing corners to form a three-dimensional framework containing channels running respectively along the [100] and [010] directions, where the Li+ ions are located. This structure is compared with compounds having (MX2O12)n chains (M = Mo, Al and X = P, As) and others containing M2O10 (M = Mo, Fe) dimers.
Mucinous Breast Carcinoma: Anatomo-Clinical Radiological and Therapeutic Features  [PDF]
Asma Korbi, Houda Mhabrech, Ennaceur Farouk, Ons Cherif, Amira Daldoul, Chiraz Hafsa, Ahmed Hajji, Raja Faleh
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104858
Abstract:
Introduction: Mucinous carcinoma of the breast constitutes 1% to 4% of all breast cancers. Two different forms of presentation are distinguished: pure mucinous carcinoma and mixed mucinous carcinoma. The purpose of our work was to clarify the anatomo-clinical and radiological particularities of this rare form of breast cancer. Materials and methods: This was a retrospective study of a series of 14 cases of mucinous carcinoma of the breast, including 8 pure mucinous carcinomas and 6 mixed mucinous carcinomas treated at the Maternity and Neonatal Center of Monastir between January 2009 and December 2017. Results: The frequency of mucinous carcinoma of the breast in our study period was 1.9%. The average of the patients was 55 years old. The average tumor size was 40 mm. Mucinous carcinoma of the breast was pure in 8 cases, mixed in 6 cases. The clinical size of pure CM was smaller than that of mixed CM (41 mm vs 45 mm) [p = 0.12]. Axillary adenopathies were found in 28.5% of patients. Mammography detected a total of 19 masses with three cases of multifocality. The average size was 27 mm, there was no significant difference between subtype sizes. Pure CMs had an oval shape in 83% of the cases with microlobulated contours in half of the cases, mixed CM rather had an irregular shape (71%) with indistinct contours (85%) (p = 0.01/p = 0.04). On ultrasound, pure CMs had a homogeneous hypoechogenic oval mass appearance with microlobulated contours enhancing ultrasound. The mixed CMs had an irregular shape of non-geometric contours and heterogeneous hypoechogenic appearance with posterior ultrasound attenuation (p = 0.06). Microcalcifications were present in 37% of pure CM and 60% of mixed CM (p = 0.13). Ganglionic invasion was noted in 28% of cases. The extension assessment was negative in all cases. The tumors were of low histological grade with predominance of SBR I and II grades. They expressed hormone receptors in 85% of cases. Overexpression of the HER2 gene was noted in only one case. Conclusion: It is important to distinguish between the two pure and mixed forms, because the therapeutic attitude and the prognosis depend on it. The pure form remains a favorable prognosis, whereas that of the mixed form matches that of infiltrating ductal carcinomas.
Thermodynamique des systèmes micellaires Partie III : Capacités calorifiques apparente et partielle des alcanoates de sodium
MS Hajji
Afrique Science: Revue Internationale des Sciences et Technologie , 2007,
Abstract: Thermodynamics of micellar systems Part III : Apparent and partial heat capacities of sodium alkanoates To obtain the heat capacities of the aqueous solutions of the sodium carboxylates, we carry out microcalorimetric heat capacities measurements. The aim of this work is to calculate the quantities of the apparent and partial molar heat capacities, and also to define the critical micellar concentrations. The variations of the partial molar heat capacities by increment -CH2 allows us to give prove for products supposed to form true micelles and products do not form micelles. To discuss the solute-solvent and solutesolute interactions we used the standard apparent molar heat capacities.
Forme Equivalente à la Condition $Δ_2 $ et Certains résultats de séparations dans les Espaces Modulaires
A. Hajji
Mathematics , 2005,
Abstract: In this paper, we present an equivalent form of the $\Delta_2 $-condition which allow us to redefine the topological vector space structure of a modular spaces using the filter base. We show also the characterization of closed subsets (in the sens of this topology) of a modular spaces which permit us to establish some separation results in modular spaces
Network Access Control Technology—Proposition to Contain New Security Challenges  [PDF]
Abdelmajid Lakbabi, Ghizlane Orhanou, Said El Hajji
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2012, DOI: 10.4236/ijcns.2012.58061
Abstract: Traditional products working independently are no longer sufficient, since threats are continually gaining in complexity, diversity and performance; In order to proactively block such threats we need more integrated information security solution. To achieve this objective, we will analyze a real-world security platform, and focus on some key components Like, NAC, Firewall, and IPS/IDS then study their interaction in the perspective to propose a new security posture that coordinate and share security information between different network security components, using a central policy server that will be the NAC server or the PDP (the Policy Decision Point), playing an orchestration role as a central point of control. Finally we will conclude with potential research paths that will impact NAC technology evolution.
Comparison of diet consumption, body composition and lipoprotein lipid values of Kuwaiti fencing players with international norms
Kazem Ghloum, Salman Hajji
Journal of the International Society of Sports Nutrition , 2011, DOI: 10.1186/1550-2783-8-13
Abstract: Fifteen national-class fencers 21.5 ± 2.6 years of age participated in this study. Food intake was measured using a 3-day food record. Body composition was estimated using both the BOD POD and Body Mass Index (BMI). Total blood lipid profiles and maximum oxygen consumption was measured for each of the subjects during the competitive season.The results of the present study showed significant differences in dietary consumption in comparison with the recommended dietary allowances (RDA). The blood lipids profile and body composition (BMI and % body fat) were in normal range in comparison with international norms However, the average VO2 max value was less than the value of the other fencers.Due to the results of the research study, a dietary regimen can be designed that would better enhance athletic performance and minimize any health risks associated with nutrition. Percent body fat and BMI will also be categorized for all players. In addition, the plasma blood tests will help to determine if any of the players have an excessive level of lipids or any blood abnormalities. The outcomes of present study will have a direct impact on the players health and therefore their skills and athletic performance.Fencing is an open-skilled combat sport that was admitted to the first modern Olympic games in Athens 1896. Modern fencing competition consists of three different weapons: the foil, the sabre and the epée, each contested with different rules. The actual matches represent only 18% of total competition time, with effective action time being 17 and 48 minutes. The physical demands of competitive fencing require a high level of aerobic and anaerobic conditioning.It is well recognized that athletic performance is enhanced by optimal nutrition (American College of Sports Medicine, American Dietetic Association, and Dietitians of Canada, 2009) [1]. Research has demonstrated that athletes are interested in nutritional information, while sport nutrition information is becoming more
Thermodynamique des systèmes micellaires Partie 1 : Volumes molaires apparent et partiel des alcanoates de sodium selon le modèle d’action de masse (MAM)a
SM Hajji, MWO Sellahi
Afrique Science: Revue Internationale des Sciences et Technologie , 2005,
Abstract: Thermodynamics of micellar systems Part I : Apparent and partial molar volumes of sodium alkanoates according to the mass-action model (MAM) Densities of the homologous sodium caboxylates were measured with a flow densimeter. Results were analysed according to the mass-action model. The first and some times the second micellar critical concentrations were determined. The apparent and partial molar volumes were calculated as well as the excess volumes. The solute-solute and solute solvent interactions were discussed.
Thermodynamique des systèmes micellaires : Partie II - Volumes molaires apparent et partiel des alcanoates de sodium selon la méthode de la pseudo-phase (MPP)
SM Hajji, MWO Sellahi
Afrique Science: Revue Internationale des Sciences et Technologie , 2006,
Abstract: Thermodynamics of micellar systems : Part II - Apparent and partial molar volumes of sodium alkanoates according to the pseudo-phase model (MPP) Volumetric measurements were carried out to obtain the apparent and partial molar volume of the aqueous solutions of the homologous series of sodium alkanoates from formate (n=0) to undecanoate (n=10). The results are analysed according to the pseudophase method (MPP). Three areas are defined corresponding to “the authentic solutions, micro-heterogeneity and pseudo-phase”. Then the critical micellar concentrations of products were obtained and the variations of the apparent and partial molar volumes during the micellization were determined. This method permits also to evaluate different micellar properties.
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