PubMed | The Kingdom University, King Fahad Specialist Hospital Dammam and Ministry of Health
Type: | Journal: Journal of medical case reports | Year: 2016
Monomelic amyotrophy is an uncommon, benign, unilateral disorder of the lower motor neurons, affecting predominantly the hand and forearm muscles. Proximal involvement of the arm and shoulder muscles is an unusual presentation that has been rarely reported in the literature.A 28-year-old white man presented with insidious-onset, slowly progressive, unilateral weakness and atrophy of his left shoulder girdle and deltoid muscles. A neurological examination revealed weakness and atrophy in his left deltoid, infraspinatus and supraspinatus muscles. Electromyography demonstrated an active and chronic neurogenic pattern affecting his left C5 and C6 myotomes; magnetic resonance imaging of his cervical spine was normal. He did well with conservative treatment.Upper limb proximal form of monomelic amyotrophy is a rare clinical entity with a wide differential diagnosis. Physicians, especially neurologists, should be familiar with this benign condition to avoid inappropriately labeling patients as having amyotrophic lateral sclerosis and other disorders with less favorable outcomes.
Ayhan T.,University of Bahrain |
Al-Madani H.,The Kingdom University
Desalination and Water Treatment | Year: 2015
The renewable energy powered natural vacuum desalination unit (NVDU) presents a promising alternative technique for seawater desalination and wastewater treatment, with low energy consumption, simple technology, and resulting clean environment. The problem of the low daily productivity of the NVDU motivated researchers to investigate various means of improving its productivity and thermal efficiency in order to reduce the production cost of freshwater. This study investigates experimentally the performance of the NVDU under the combined effects of evaporation and cavitation on freshwater production rate. The NVDU consists of an inverse U-shaped pipe, with one side acting as the evaporator and the other side as the condenser. The experiments were conducted under three different sets of conditions. The first had ambient conditions on both sides, the second used a water-ring vacuum pump to create a buoyancy effect, and the third was similar to the second set of conditions, but with cooling of the condensation side. The results show that the last case increased the freshwater production rate by approximately 70 times compared to the first case, while in the second case, the production rate was roughly 13 times better than in the first. These results could be attributed to the combined effects of evaporation and cavitation. This attribution is supported by the visualization of bubble motions. © 2015 Balaban Desalination Publications. All rights reserved.
Khezami L.,Islamic University |
Ould M'hamed M.,Islamic University |
Lemine O.M.,Islamic University |
Bououdina M.,The Kingdom University |
Bessadok-Jemai A.,King Saud University
Desalination and Water Treatment | Year: 2015
The purpose of the present study was to evaluate the performance of milled goethite as an effective nanomaterial for the removal of Cd(II) ions from aqueous solutions. Goethite nanocrystallines powders were prepared by high-energy ball milling with a balls-to-powder mass ratio of 10:1 and for 40 h of milling. X-ray diffraction, Rietveld analysis, and vibrating sample magnetometer are used to characterize the obtained nanopowders followed by tests for toxic metals removal from aqueous solutions. In addition, batch of experiments were performed to determine the adsorption equilibrium, kinetics, and thermodynamic parameters of toxic heavy metal ions by milled goethite. Adsorption data were modeled using Langmuir model, Freundlich equation, pseudo-first-order and pseudo-second-order equations. The adsorption process was found to be highly pH dependent. The adsorption of heavy metal ions reached a maximum value rapidly within 6 min and the adsorption parameters were in good agreement with both the Langmuir and Freundlich isotherms. A maximum Cd(II) ion adsorption capacity was estimated to be 167 mg g−1 at 328 K and a pH of 7. The kinetics of the adsorption process was found to follow the pseudo-second-order rate law. The evaluation of the thermodynamic parameters of milled goethite revealed a spontaneous endothermic adsorption process. Besides, the positive values of the entropy suggest an increase of randomness at the solid–solution interface during the heavy metal ions adsorption. © 2015 Balaban Desalination Publications. All rights reserved.
Michaloudis I.,The Kingdom University |
Alexiou P.,The Kingdom University
Proceedings of the International Astronautical Congress, IAC | Year: 2014
This paper continues the discussion we had opened with the paper Etherospermia: Conceptual art, science and allegory in the sky-seeding project, presented in last year's IAC in Beijing and published in Acta Astronautica 104 (2014) 61-70. Here the invented word Skypoïetic is constructed using poietic (from Greek: "creative") meaning productive or formative. In Plato's Symposium Diotima presents how mortals strive for immortality in relation to poiesis: in all creating and bringing forth upon the beautiful there is a kind of making/creating or poïesis. In this genesis there is a movement beyond the temporal cycle of birth and decay. "Such a movement can occur in three kinds of poiesis: 1) Natural poiesis through sexual procreation, 2) poiesis in the city through the attainment of heroic fame, and, finally and 3) poiesis in the soul through the cultivation of virtue and knowledge. In this paper we'll present the "utopoetic" aspects of an art and science project by advancing further our last year's (u)topic/approach on Etherospermia. This will be possible by a closer examination on the poiesis, the creation of seven artworks of Michaloudis based on the space nanomaterial silica aerogel and its quality to capture vapors. This ethereal (im)material is seen by the artist and the authors as the perfect personification of our sky. If our wounded atmosphere needs to be duplicated onto other planets in order to create future habitats for the being, our Climatic Sculptureality project could give the poietic elucidation.
Ali El-Wageeh S.M.,The Kingdom University
Electronic Government | Year: 2012
This paper suggests a conceptual model for applying the Virtual Reality (VR) technology on the information sector of the e-Government. A conceptual model for applying VEs in e-Government websites is suggested. The model is empirically applied on the electronic services offered to citizens through the website of the Ministry of Municipalities and Urban Planning affairs in the Kingdom of Bahrain. It is found that engaging VEs as interactive visual gates of information in such websites can help in developing the quality and interactivity of services offered to citizens. Moreover, it can strengthen the interoperability between governmental authorities and sub-directorates. Copyright © 2012 Inderscience Enterprises Ltd.
Qaid A.,University of Technology Malaysia |
Bin Lamit H.,University of Technology Malaysia |
Ossen D.R.,The Kingdom University |
Raja Shahminan R.N.,University of Technology Malaysia
Energy and Buildings | Year: 2016
The urban heat island (UHI) phenomenon and the outdoor thermal comfort in a planned city need to be reviewed and studied as a climatic issue in the design process. Increasing the temperature and discomfort conditions would be unjustified and not acceptable, unlike the temperature and the discomfort outdoors in a non-planned city that is natural. This study aimed to investigate the UHI phenomenon and outdoor thermal comfort on a micro-scale of the different areas in a planned city. A mobile survey and fixed station measurements were performed to investigate the intra-urban air temperature within the city. The thermal comfort condition of the different hot spots of the urban area in the city was investigated by using Envi-met V4 Beta software. The results indicate that the maximum UHI occurred during the afternoon and reached 3 °C in low-rise residential buildings. The high-rise residential buildings and the Boulevard street are 4 °C lower than low-rise buildings and 1 °C lower than nearby suburban areas. The city's human thermal comfort exceeds the natural range of 30 °C. However, the high-rise residential buildings and the Boulevard street are thermally comfortable most of the daytime hours, while low-rise buildings suffer from a long period of heat stress. The diffuse, reflected solar radiation and the surface temperature have an influence on increasing the Physiologically Equivalent Temperature (PET) thermal index within the city, while the wind velocity and building height are the essential variables reducing the PET thermal index. © 2016 Elsevier B.V.
Khabeev N.S.,The Kingdom University
Journal of Applied Mechanics and Technical Physics | Year: 2010
The problem of free radial oscillations of gas bubbles in a liquid is considered. The structure of the roots of the dispersion equation in the presence of heat transfer between the phases is studied in detail. It is shown that this equation has two complex-conjugate roots and an infinite number of real roots; all of the roots lie in the left complex half-plane, providing damping of radial oscillations. Approximate expressions for these roots are obtained. © 2010 MAIK/Nauka.
Ismail A.M.A.,The Kingdom University
Arab Gulf Journal of Scientific Research | Year: 2011
Collaborative learning is emerging as an important learning method. It is an educational approach for teaching and learning; that involves groups of learners working together to solve a problem, complete a task, or create a product. This paper describes a comprehensive approach in collaborative inquiry of medical physics at College of Medicine & Medical Sciences (CMMS) Arabian Gulf University (AGU). The collaborative module comprises: an interactive medical physics WebCT virtual learning environment that provides students with shared workspaces for coordinating and recording their collaboration in scientific inquiry; inside and outside field visits carried out collaboratively by each subgroup and the tutor. Medical physics diagnostic and application dialogue (learning problems) and Web-based materials are designed to match and enrich the module. The individual and group assessments given to students guide their learning process, and help them to scientifically report and evaluate their collaboration inquiry experiences. The main aim of this work was to redesign the medical physics module at the AGU and contribute in shifting the learning process from a teacher-center to a learner-center activities and support learner-learner interaction, learner-content interaction, and learner-tutor interaction to a degree that facilitate deep learning and fulfill satisfaction with learning. The results indicate that collaborative learning enabled the participants to communicate easily with their teachers (resource people, tutors and professors) and their peers searching for answers for themselves. In addition, the participants were able to assess their own expertise, resulting in the enhancement of knowledge, skills, attitudes and satisfaction with learning. Concerning achievement in medical physics; data analysis results revealed no significance differences related to treatment type (collaboration, no collaboration) or the gender of the experimental group participant's (male, female). A remarkable result was that participants who were taught through collaborative approach scored significantly more gain in achievement (M = 15.1289, SD = 16.84061) than the control group that did not use collaborative approach (M = 6.1225, SD= 21.26310), t(290) = -4.023, p < .05. i.e. collaborative approach for teaching medical physics prove its strength in empowering subjects gain development in achievement. Further research on more courses is needed to cross-validate the study findings and generalize the results. Attached an appendix titled "X-Ray and Medical Diagnostic Dialogue".
PubMed | The Kingdom University
Type: Journal Article | Journal: Annals of translational medicine | Year: 2016
Acute respiratory distress syndrome (ARDS) is a life threatening complication of H1N1 pneumonia. According to the Berlin conference guidelines, severe ARDS requires management with early invasive mechanical ventilation. Whether noninvasive positive pressure ventilation (NIPPV) should be attempted in patients with H1N1 pneumonia is still a matter of debate. We report the case of one patient with severe ARDS without other organ failure. The patient was managed successfully using NIPPV. Endotracheal intubation was avoided and the patient was discharged from the intensive care unit (ICU) after 10 days with a successful outcome. NIPPV can be useful in patients with isolated severe H1N1 ARDS provided early improvement of the oxygenation parameters is achieved. Patients with multiple organ failure or with persistent severe hypoxemia under noninvasive ventilation should be electively intubated and started on invasive mechanical ventilation.
PubMed | The Kingdom University
Type: Journal Article | Journal: Urology annals | Year: 2016
We present a case of spontaneous retrograde migration of ureterovesical junction stone to the kidney. A 26-year-old Bahraini male, diagnosed with left lower ureteric stone 7 months before this presentation. On his recent presentation, the stone has migrated down but not passed, confirmed on imaging. Operative removal was planned. X-ray kidney ureter bladder (KUB) in the morning of surgery did not reveal stone in the ureter, but the same shadow was seen in the kidney. An urgent computerized tomography-KUB was done, and this confirms the stone has migrated to the kidney. Surgery was canceled, and the stone was dealt with extracorporeal shockwave lithotripsy and was fragmented in the first session. This retrograde migration of lower ureteric stone to the kidney is not reported in the English literature in human before.