Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

9 ( 1 )

2020 ( 23 )

2019 ( 302 )

2018 ( 292 )

Custom range...

Search Results: 1 - 10 of 103094 matches for " Mohammad I. Abu Taha "
All listed articles are free for downloading (OA Articles)
Page 1 /103094
Display every page Item
Photoacoustic Detection in the Michelson Interferometer Cavity  [PDF]
Mohammad I. Abu Taha, Ahmed S. Jabr
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.59086

For the first time, we report photoacoustic (PA) signal detection in a cell placed within the Michelson interferometer cavity in an attempt to relate photoacoustic effect to the Michelson fringe shift as a result of changes in the cell. Both detection schemes were investigated using IR absorption and their sensitivities compared. Signals related to Michelson interferometer fringe and PA effect have shown good correlations with each other using different samples including some essential oils and their corresponding plant part from which the essential oil is usually obtained. Results were encouraging and will open the door widely to use the combined Michelson interferometer-photoacoustic spectroscopy (PAS) in trace gas detection for different applications.

Fourier Transform Infrared Spectroscopy Typing an Enterococcus sp.  [PDF]
Mohammad I. Abu Taha, Hatem K. Eideh, Sameeh M. Saed, Hazem Jaber
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.516169
Abstract: Enterococcus species are one of the leading causes of nosocomial infections, which are difficult to treat specially with the rise of its Vancomycin resistant. Studies of Enterococcus isolates are essential for epidemiological investigation. Typing Enterococci is often based on the traditional phenotypic as well as genotypic methods. In this study Fourier-transform infrared (FTIR) spectroscopy is used as a novel phenotypic approach to the typing of Enterococci. FTIR spectroscopy results compared to antibiotic susceptibility testing and PCR amplification of Vancomycin gene results; the analysis showed that, 6 isolates were positive for Van gene (4 of VanA, 1 of VanB and 1 VanA plus VanB). Three of VanA and VanA plus VanB were resistant to all antibiotic tested (Ampicillin, Teicoplamin and Vancomycin) and VanB was found to be sensitive. FTIR spectroscopy (first derivatives) divided the isolates into 8 groups. 3 groups of VanA (4 isolates), one of VanB (one isolate), one of VanA plus VanB (one isolate) and the other 13 Enterococcus isolates were divided into 3 clusters. The study demonstrated that FTIR spectroscopy has good discriminative capacity and high reproducibility as compared to other techniques.
Trace Gas Detection from Plant Leaves, Flowers and Seeds Using Conventional and Photothermal Light Deflection Spectroscopy  [PDF]
Mohammad Ibrahim Abu-Taha, Yasmeen Abduljaleel Abu-Rayan
Optics and Photonics Journal (OPJ) , 2011, DOI: 10.4236/opj.2011.12005
Abstract: Photothermal deflection spectroscopy is a method used indirectly to measure optical absorption of a sample. Different techniques can be employed to measure the amount of deflection, hence evaluate optical absorption of sample. This work investigates an alternative method both in principle and technique to measure sample’s optical absorption. The new method employed for the first time, relies on the simple idea of light beam deflection from the medium under investigation as a result of change in the index of refraction in its vicinity. The amount of deviation executed by the deviated beam is estimated using new technique that is used for the first time in deflection spectroscopy. As the deviated beam is allowed to pass through a single slit, the value of beam deflection is estimated from the resulting diffraction pattern, i.e. indicating the value of changes taking place in the sample and or measure sample’s optical absorption. The new detection technique used in the estimation of probe beam deflection was also applied in photothermal spectroscopy. Results from both methods were compared and revealed the ease of use of the new method, in addition it cuts cost and experimental efforts although its sensitivity is less than the conventional photothermal method.
On the Usage of the Faraday Effect as an Authentication Technique for Vegetable Oils  [PDF]
M. I. Abu-Taha, M. A. Halasa, M. M. Abu-Samreh
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.42032

In this study we report on the measurements of the Verdet constant for olive and other vegetable oils. Study of samples stored for different periods at different storage conditions showed that each olive oil sample has a Verdet constant value depending on: production year, history of the sample (i.e. storage conditions) and geographical region. Photo and auto oxidations are found to have reverse effects on the value of the measured Verdet constant, on the one hand, photo-oxidation tends to decrease the Verdet constant, but on the other hand auto-oxidation tends to increase it. It is known that oils stored in room light had significantly lower tocopherol, carotenoid, and chlorophyll contents than did the same oils kept in the dark. For other vegetable oil samples, each vegetable oil was found to have a distinct Verdet constant value. Thus it is possible to differentiate vegetable oils making use of their respective Verdet constants. Preliminary results indicated the possibility to detect olive oil adulteration using the Faraday Effect, i.e. the effect could be suggested as a food authentication technique if calibration curves and standard Verdet constants values could be prepared for comparison with those of samples under investigation.

Argon Plasma Coagulation in Enhancing the Healing of Solitary Rectal Ulcer Syndrome & Controlling Its Bleeding  [PDF]
Mohammad Shaikhani, Taha Karbuli, Nasir A. Alqazi, Hiwa Abu Bakir Hussein, Bakhtyar Salim, Kalandar Kasnazan
Case Reports in Clinical Medicine (CRCM) , 2014, DOI: 10.4236/crcm.2014.35059

Solitary rectal ulcer syndrome (SRUS) is an uncommon disorder of defecation. Its management is usually unsatisfactory and responds best to surgery especially when there is rectal prolapse. There is a new report of the use of Argon plasma coagulation (APC) to enhance healing of these ulcers & control its bleeding in a study involving 16 patients. We involved a larger number of 18 patients in this case series to examine the role of APC in enhancing healing of SRUS & control its bleeding.

Phase Behavior of a United Arab Emirates Stock-Tank Oil and Carbon Dioxide at Reservoir Conditions: Experiments and Thermodynamic Modeling  [PDF]
Samir I. Abu-Eishah, Rashid S. Mohammad
Open Journal of Yangtze Oil and Gas (OJOGas) , 2016, DOI: 10.4236/ojogas.2016.11001
Abstract: Injection of a soluble gas like CO2 into an oil reservoir reduces the interfacial tension and oil viscosity and contributes to oil swelling, which together, in turn, enhance the oil mobility and relative permeability. In this work an experimental phase equilibrium setup for the recombination of live oil (stock-tank oil and first-stage separator gas) and measurement of the corresponding phase behaviors of CO2/live oil mixtures is described. In the recombination process, the vapor-to-oil molar ratio was adjusted until the composition of the original reservoir fluid was obtained. The average of the absolute error (AAE) in composition was about 0.77% and 1.09% for the two reservoir fluids under test (named here wells A#22 and A#33, respectively). The optimum vapor-to-oil molar ratio for zero deviation in the methane composition in the live oil (recombined) was about 0.42 for both wells. In addition, the PVTi simulator was used to reproduce the live oil (by combining the first-stage separator gas and the stock-tank oil) and also to predict the recombined oil characteristics at the reservoirs’ saturation pressure and bottom hole temperature. On the other hand, the PVTpro simulator was used to investigate the oil swelling rate and establish the relationship between saturation pressure and the injected CO2 mass fraction. The average of the absolute relative error (AARE) between experimental and predicted saturation pressures was 7.78% for well A#22 and 5.38% for well A#33.
The Horse Before the Cart! The English Language Learners Experience of Using E-learning System
Mohammad Madallh Alhabahba,Dr. Azidah Abu Ziden,Dr. Ali Abbaas Albdour,Bashar Taha Alsayyed
International Journal of Emerging Technologies in Learning (iJET) , 2012, DOI: 10.3991/ijet.v7i2.1962
Abstract: This study examined the intention to use E-learning among EFL learners. A total of 147 English language learners responded to the survey, these students have access to E-learning system. The chief purpose of this paper aims to understand the factors that affect the students’ intention to use E-learning in Malaysian context. The findings of the study revealed that that perceived ease of use and perceived usefulness were able to be significant determinants of intention to use. Based on factor analysis, cognitive attitude and affective attitude were added to the modified framework as potential mediating factors. Moreover, cognitive attitude is fully mediating the relationship between perceived ease of use, perceived usefulness, and intention to use. Meanwhile, the study results indicated that the cognitive attitude is a significant determinant of intention to use. The study helps to understand the significant factors to explain, predicate and measure the acceptance of E-learning as a new tool of students learning process.
The Influence of Infants’ Characteristics on Breastfeeding Attitudes among Jordanian Mothers  [PDF]
Ghada Mohammad Abu Shosha
Open Journal of Nursing (OJN) , 2015, DOI: 10.4236/ojn.2015.54032
Abstract: Background: Breastfeeding is the desired nutritional method for infants. Some infants’ characteristics were found influential to mothers’ point of views toward breastfeeding. However, the relationship between infants’ characteristics and mothers’ attitudes toward breastfeeding is still uncertain. The aim of this study was to assess infants’ characteristics and their impact on Jordanian mothers’ attitudes toward breastfeeding. Methods: A descriptive cross-sectional design was used. A sample of 130 mothers was selected conveniently from mothers attending four major governmental maternal-child health centers at Zarqa city in Jordan. The Iowa Infant Feeding Attitude Scale along with infants’ characteristics data sheet were used for data collection. Results: A more positive attitude toward breastfeeding was manifest (mean 63.5, SD: 4.67). Positive attitudes toward breastfeeding were higher among women who delivered normally than women who delivered by cesarean section (p = 0.040). In addition, women who had healthy infants were more likely to have positive attitudes toward breastfeeding compared to women with ill infants (p = 0.021). However, women with preterm deliveries were less likely to have positive attitudes compared to women with full-term deliveries (p = 0.013). Likewise, women whose infants admitted to neonatal intensive care unit recorded less positive attitudes toward breastfeeding than women with healthy neonates (p = 0.043). Gestational age, admission to neonatal intensive care unit, infant’s health status, and type of delivery, were factors influencing mothers’ attitudes towards breastfeeding. Conclusions: Jordanian mothers have positive attitudes toward breastfeeding. However, positive attitudes are subject to different infants’ characteristics that should be considered while undertaking heath education programs for promoting breastfeeding. More focusing is recommended for women who delivered preterm infants, women who have ill infants, and women who delivered by cesarean section.
The Level of Multiple Intelligences in Arabic Language Textbooks for Grades from (1 - 4) in Jordan in Light of Gardner’s Theory  [PDF]
Saleh Mohammad Abu Jado
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.614156
Abstract: This study aims to investigate the level of inclusion and balance of multiple intelligences in the Arabic Language textbooks in light of Gardner’s Theory using the analytical descriptive approach. Eight textbooks in grades (1 - 4) for the first and second semesters were taught in schools in the Jordanian educational system in 2013/2014. The selected textbooks were analyzed using Multiple Intelligences (MI) checklist devised by the researcher based on the framework of the Theory of Multiple Intelligences to examine them in relation to different intelligences as reflected through various activities, questions and tasks. The study sample consisted of all Arabic Language textbooks for the grades from 1 - 4. Results of the study showed that the verbal/linguistic intelligence in the textbooks in general scored the highest frequency amongst all types of intelligence; meanwhile the musical intelligence in the textbooks scored the lowest frequency among all types of intelligence. The study concluded with a recommendation to consider the necessity of employing all types of intelligence in designing Arabic language textbooks for young learners.
Keep on Striving: The Impact of Psychosocial Support on Jordanian Adolescents with Cancer  [PDF]
Ghada Mohammad Abu Shosha
Health (Health) , 2016, DOI: 10.4236/health.2016.810095
Abstract: Having cancer during adolescence stage causes stressors in patients’ lives. They are responsible for dealing with many new situations and stressors. Coping with such stressors can be influenced by psychosocial factors. This study aimed to explore the impact of psychosocial support on adolescents with cancer. A qualitative exploratory design was used to understand the experience of psychosocial support from the perspectives of the patients. Twenty adolescents with cancer were selected purposefully from two major cancer treatment centers in Jordan. Semi-structured face-to-face interviews were used to obtain the participants’ perspectives. Data were analyzed using thematic analysis approach. Findings revealed three major themes: “supportive structure”, “precious aspects of psychosocial support”, and “cancer could be defeated”. Participants expressed their satisfaction with the psychosocial support provided to them. However, they asked for further improvement in hospital facilities, playrooms and leisure activities. In conclusion, having a strong psychosocial support system will help adolescents to cope with cancer. Family, friends, and the surrounding environment are the key elements in installing hope and helping adolescents to go through cancer experience. Nurses are advised to adopt these psychosocial keys in order to create age-related activities that would improve the patients’ coping with cancer.
Page 1 /103094
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.