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Search Results: 1 - 10 of 726975 matches for " M. A. Al-Katta "
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Case Report-Huge Lipoma in the Right Groin  [PDF]
Abdulla Mohammed Megally, M. A. Al-Katta, Z. A. Mejalli, Hadi Mohammed Mujlli
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105714
Abstract:
Lipoma is the most common soft tissue tumor, considered the universal tumor in the body. The differential diagnosis of a lipoma in the groin will include groin hernias, safina varex, lymphadenopathy, hydrocele and sarcoma. Due to the similarity of clinical symptoms and signs, the differentiation between inguinal, femoral hernias and groin lipoma is difficult. To avoid the high risk of intraoperative complications, correct diagnosis is an indication. We are report-ing a case with huge lipoma arisen from the right groin mainly from right la-bium major of a 19-year-old single girl grown in a relatively short period to reach dimensions of a football and weighing 7200 grams. Painless, peduncu-lated tumor arose from labium major to the level of the knee, asymptomatic except unsightly huge mass, which treated successfully by surgical excision without complications and proved benign with no malignant changes detected.
Irradiation Effect on Photodegradation of Pure and Plasticized Poly (4-Methylstyrene) in Solid Films  [PDF]
Saria A. Al Safi, Thanaa M. Al Mouamin, Wadhah N. Al Sieadi, Khalid E. Al Ani
Materials Sciences and Applications (MSA) , 2014, DOI: 10.4236/msa.2014.55036
Abstract:

The photodegradation of irradiated thin films of poly (para-methylstyrene) with 265 nm radiations in the presence of airand as a function of irradiation time has been studied using UV-VIS, fluorescence and FT-IR Spectroscopic techniques. The influence of phthalate and terephthalate plasticizers on stability of poly (para-methylstyrene) towards irradiations was also investigated. Blending with phthalate plasticizers was found to cause a higher efficiency of photodegradation than that obtained in doping with terephthalate plasticizers. The intensity of absorption was also found to increase with time of irradiation and in change in the shape of the spectra at longer wavelength, thus indicating a possibility of photodegradation of polymer chains. The analysis of the FT-IR spectra of the irradiated and non-irradiated samples, shows a predominant absorption associated with carbonyl compounds with 1740 cm-1. In addition, the observed increase in the intensities of the carbonyl and hydroxyl regions of the FT-IR spectra, have provided an evidence for the photodegradation as well as photo-oxidation of polymeric chains. The presence of the plasticizer in the polymer backbone was found to accelerate the photodegradation of polymeric chains.

The Prevalence of Psychosomatic Symptoms and Spirituality Levels among University Students in South Jordan  [PDF]
Hani A. Nawafleh, Lourance A. Al Hadid, Muwafaq M. Al Momani, Ahmad M. Al Sayeh
Health (Health) , 2018, DOI: 10.4236/health.2018.101009
Abstract: Psychosomatic symptoms are present in various stages of life. University students have also manifested such symptoms, which were also found to be linked to the level of spirituality affecting physical and psychological well-being. This study aims to examine whether spirituality can predict the presence of psychosomatic symptoms by investigating the relationship between the prevalence of psychosomatic symptoms and the level of spirituality among university students in South Jordan. An exploratory cross-sectional design involving convenience samples and self-administered questionnaires using the twelveitem general health questionnaire including spirituality-based items were used to collect data for this study. A total of 1269 completed the study questionnaire. Students’ responses indicated various psychosomatic symptoms causing issues to better academic achievement, including students’ feeling of uselessness, followed by their lack of happiness, inability to make decisions and solve problems, and lack of concentration on what they are doing. They considered spirituality as an important part of their life. Lower scores on general health questionnaire were observed to have higher scores on spirituality items indicating that students with better spirituality practices have less psychological symptoms. Based on the findings of this study, the level of spirituality influences the prevalence of psychosomatic symptoms. Conducting educational programs to improve the spiritual well-being of students could be beneficial. Further, it is important that students’ affairs board at the university perform proper assessment and interventions to improve the spirituality level to decrease the impact of psychosomatic symptoms among students.
The Continuous Wavelet Transform Associated with a Dunkl Type Operator on the Real Line  [PDF]
E. A. Al Zahrani, M. A. Mourou
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.35063
Abstract:

We consider a singular differential-difference operator Λ on R which includes as a particular case the one-dimensional Dunkl operator. By using harmonic analysis tools corresponding to Λ, we introduce and study a new continuous wavelet transform on R tied to Λ. Such a wavelet transform is exploited to invert an intertwining operator between Λ and the first derivative operator d/dx.

Development of Anti-Wear/Antioxidant Additives for High Quality Metalworking Fluid from Waste Petroleum Products  [PDF]
Noura Al Mehbad, A. M. A. Omar
Journal of Surface Engineered Materials and Advanced Technology (JSEMAT) , 2014, DOI: 10.4236/jsemat.2014.41006
Abstract:

Surfactants are used for formulation metal working fluids. These fluids are applied to the interface between a cutting tool and the metal working piece to provide friction reduction. In the present paper, poly aromatic ammonium sulphonate and polyaromatic benzyl triethanolamsonium ethoxylate with 6 ethylene oxide units were synthesized and blended with coupling agent like dodecyl alcohol and oleic acid to produce cutting fluid and evaluate as antiwear. Values of surface tension of these additives were measured in oil phase and consequently CMC was determined for all additives and their mixtures in oil phase. The efficiency of these additives depends on their chemical structure and the presence of ether oxygen brings about the association of the surfactant with metal surface, hence very good wetting properties. The antiwear characteristic of surfactants increases with increasing polar linkages in the aromatic moieties forming chelated and coordinated layer. This is due to the increase in the number of sites to chemisorption on the metal surface. The films formed are highly condensed ring aromatic layered structures. These films provide lower wear and depend on the type of surfactants concentration

A New Matchmaking Algorithm Based on Multi-Level Matching Mechanism Combined with Fuzzy Set  [PDF]
Adnan I. Al Rabea, Muawiah M. A. Al Fraihat
Journal of Software Engineering and Applications (JSEA) , 2012, DOI: 10.4236/jsea.2012.53018
Abstract: The lack of semantic parts, increasing the number of Web services in the Web, and syntactic-based search operation are the main problems of current Web service technologies, these factors make difficult for clients to find a required web service. This paper shows a matchmaking algorithm to discover Semantic Web Services that are satisfying client requirements. It depends on two factors that distinguish it from any conventional Web service discovery algorithm; the first one is using semantic matching technique to overcome shortcoming of keyword matching techniques, the second one is tying Quality of Service (QoS) metrics of Web Service (WS) with fuzzy words that are used in user’s request. At least fifty percent average gain in search relevancy is obtained when our matchmaking algorithm is applied to WSs that are actually matching the chosen fuzzy semantic theme.
Clopidogrel in ischemic heart disease: A critical appraisal  [PDF]
Mohammed A. Al-Otaiby, Abdulrahman M. Al-Moghairi
Health (Health) , 2013, DOI: 10.4236/health.2013.53063
Abstract:

Aspirin and clopidogrel are the commonest dual antiplatelet agents being used in the secondary prevention of cardiovascular disease. In high risk patients with coronary heart disease, the use of aspirin was associated with a significant risk reduction of myocardial infarction, stroke and vascular death. The use of clopidogrel alone was slightly superior to aspirin, and associated with reduced risk of vascular death, ischemic stroke and myocardial infarction. Dual antiplatelet therapy has been well studied in patients with acute coronary syndrome and those undergoing percutaneous coronary intervention (PCI). In patients with stable coronary heart disease or multiple risk factors the combination of clopidogrel plus aspirin was not significantly more effective than aspirin alone in reducing MI, stroke or death from cardiovascular causes.

Analysis of Different Rare Metals, and Rare Earth Metals in Harvested Rain Water in Gaza Strip/Palestine by ICP/MS-Data and Health Aspects  [PDF]
M. A. Al-Qutob, F. Al-Rimawi
Journal of Water Resource and Protection (JWARP) , 2016, DOI: 10.4236/jwarp.2016.810074
Abstract: This rain water samples harvested for drinking and agriculture from Gaza collected in November 2012 were analyzed for different rare metals (Rb, Zr, Ti, Tl, Sb, Sc, Y), and rare earth metals (La, and Ce). These metals usually have no maximum acceptable limits as there is no sufficient data about their toxicity to human health. Their control should be therefore controlled in water to monitor their concentration in water (ground, harvested, etc.). This study was conducted to determine the water quality of harvested water which is used for drinking in the study area. 43 water samples were collected in November 2012 during the first rain from house wells and rain water pools. The concentrations of the metals detected in the collected harvested rainwater vary significantly between the 43 samples, and all of them were detected in all water samples analyzed in this study. The results obtained from this study suggest a possible risk to the population of the study area given the high concentration of some metals that have no maximum allowed concentration, and the fact that for many people in the study area, harvested rain water is a main source of their water supply.
Evaluation of ERP Systems Quality Model Using Analytic Hierarchy Process (AHP) Technique  [PDF]
Thamer A. Al-Rawashdeh, Feras M. Al’azzeh, Sokyna M. Al-Qatawneh
Journal of Software Engineering and Applications (JSEA) , 2014, DOI: 10.4236/jsea.2014.74024
Abstract:

The Enterprise Resource Planning (ERP) system is a complex and comprehensive software that integrates various enterprise’s functions and resources. ERP system cleanly encapsulates crosscutting concerns which cannot be encapsulated by other types of information systems like data synchronization and standardization, system complexity and system modularity. Many studies are conducted to propose software quality models with their quality characteristics. However, there is currently no dedicated software quality model that can describe and involve new features of ERP systems. Thus, this study has proposed an ERP system quality model (ERPSQM). Analytic Hierarchy Process AHP has been employed to evaluate the quality of ERPSQM. Furthermore, this proposed model can be used to make a comparison of ERP systems to help companies implement better systems.

The Inhibition Effect of Cinnamon Extract on Leaching of Aluminum Cook Wares in NaCl Solutions at Quasi-Cooking Condition  [PDF]
Layla A. Al Juhaiman, Raesah A. Al-Shihry, Hassan M. Al Hazmei
Journal of Surface Engineered Materials and Advanced Technology (JSEMAT) , 2015, DOI: 10.4236/jsemat.2015.54020
Abstract: The contribution of cinnamon extract on leaching of aluminum (Al) cook wares was investigated using two aluminum alloys (Indian and Egyptian) and pure Al. The cinnamon (Cin) was extracted by heating the Cin sticks at 90°C in distilled water for an hour to make the 10% stock solution. This study was done in aqueous solutions in presence and absence of 1% NaCl using weight loss at 90°C. Moreover surface study (SEM and EDX) and electrochemical methods (Open Circuit Potential and Tafel plot) were applied. The addition of Cin solutions to 1% NaCl decreased the corrosion rates in weight loss and electrochemical method compared to 1% NaCl solutions which showed an inhibitive property of Cin solution. The inhibition was found to obey the modified Langmuir isotherm with a negative Langmuir ΔGads indicating the spontaneous nature of adsorption even at 90°C. The EDX surface analysis of the Al surface immersed in Cin + NaCl revealed the composition of the pits formed. From Tafel method, it was found that the corrosion current density of pure Al was more than that of the Egyptian alloy. The apparent activation energy values for Cin, Cin + NaCl and NaCl solution were evaluated and discussed.
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