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Search Results: 1 - 10 of 6673 matches for " Azmi Mohammed Saleh "
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Use of the urinary trypsinogen-2 dipstick test in early diagnosis of pancreatitis after endoscopic retrograde cholangiopancreatography (ERCP)  [PDF]
Hasan El-Garem, Enas Hamdy, Sherif Hamdy, Mohammad El-Sayed, Aisha Elsharkawy, Azmi Mohammed Saleh
Open Journal of Gastroenterology (OJGas) , 2013, DOI: 10.4236/ojgas.2013.36049
Abstract: Background: Acute pancreatitis is one of the most serious complications of ERCP. Early diagnosis of post ERCP pancreatitis helps physicians to provide intensive care and possible medical treatment as early as possible. Trypsinogen-2 in urine is a good diagnostic and prognostic marker of acute pancreatitis. Objectives: To evaluate the diagnostic value of urinary trypsinogen-2 dipstick test for early diagnosis of post ERCP pancreatitis. Methods: A total of 37 patients with obstructive jaundice were tested with the urinary trypsinogen-2 dipstick test and serum levels of amylase and lipase before ERCP and 6 hours after ERCP. Results: Post ERCP pancreatitis was diagnosed in 6 (16%) of 37 patients. The sensitivity, specificity, positive predictive value and negative predictive value of urinary trypsinogen-2 dipstick test at 6 hours after ERCP were 100%, 97%, 86%, 100% respectively. At the cutoff level (130 U/L) for lipase, the positive predictive value and negative predictive value all were (100%), however, the positive predictive value and negative predictive value for amylase levels at cutoff (122 U/L) were 60%, 100% respectively. Serum lipase level was the best test for diagnosing post ERCP pancreatitis followed by the urinary trypsinogen-2 dipstick test. Conclusions: The urinary trypsinogen-2 dipstick test can be used as a rapid and easy test for early diagnosis of post ERCP pancreatitis with high sensitivity and specificity.
A Monograph on: Educational Linguistics, its Origin, Definitions and Issues it Accounts for
Ahmed Mohammed Saleh Alduais
International Journal of Education , 2012, DOI: 10.5296/ije.v4i4.2437
Abstract: Purpose: To present argumentatively Spolsky’s proposed idea of exempting the field of applied linguistics from his proposed field educational linguistics and Hult’s view that only the history of educational linguistics can be inextricably linked to applied linguistics. Method: Accounting for the history of educational linguistics in terms of its origin, definitions, and issues it accounts for. Besides, the author presents his own proposed models for the field of educational linguistics to be discussed against those models proposed by Spolsky (the father of educational linguistics). Results and conclusions: Whether applied linguistics and educational linguistics are the same remains a controversial issue, but it is very clear that applied linguistics could include educational linguistics but not vice versa.
Concentrating Solar Power to Be Used in Seawater Desalination within the Gulf Cooperation Council
Mohammed Saleh Al. Ansari
Energy and Environment Research , 2012, DOI: 10.5539/eer.v3n1p10
Abstract: The research discussed in this paper is intended to shed some light on the potential that exists when concentrating technology of solar thermal energy for use in Gulf Cooperation Council Countries, or most commonly referred to as GCC. The research provides the opportunity to study the technologies related to the concentration of solar power technologies along with water desalination demands and fresh water availability, which in turn leads to the jeoparadization of water resources that are derived from the ground. Desalination plants that are solar powered, within the Gulf Cooperation Council countries comprise of Qatar, Saudi Arabia, Kuwait, Oman, UAE, and Bahrain. The study recognizes that a political structure is required for introducing the premier foundation of solar power and desalination as well as ensuring comprehension of the proposal. The study evaluates solar energy accessible resources and the costs of integrating this alternative energy source, desalination of water, long standing scenarios of integrating power production technologies into the water sectors, and quantifying the socio-economic and environmental impacts of this alternative energy notion.
An Investigation into Substation Grounding and Its Implementation on Gaza Substation  [PDF]
Ahmed Hammuda, Hassan Nouri, Mohammed Saleh Al-Ayoubi
Energy and Power Engineering (EPE) , 2011, DOI: 10.4236/epe.2011.35074
Abstract: An investigation into the optimal design of a substation grounding system for the transmission substation in Gaza City, Palestine has been carried out. A research into the most influential parameters on the effectiveness of the substation grid system has been performed and its results have been incorporated into the Gaza case study. Through modelling and simulating the power station in Gaza while considering some field data, an optimal substation grounding grid has been designed and has shown complete conformance to safety. It is thus considered that such a design will protect personnel in any area of the substation in addition to the installed machinery if the largest possible fault current was to traverse the earth.
Biosynthesis of Silver Nanoparticles from Allium ampeloprasum Leaves Extract and Its Antifungal Activity  [PDF]
Samiyah Saeed Al-Zahrani, Saleh Mohammed Al-Garni
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2019, DOI: 10.4236/jbnb.2019.101002
Abstract: Development of natural based nanomaterial immense interest of researchers involved in eco-friendly biosynthesis of nanoparticles. This research set out to investigate the potential of Allium ampeloprasum leaves extract to synthesize silver nanoparticles (AgNPs), and evaluate their antifungal activity against some toxigenic strains of Aspergillus isolates. In order to achieve this, AgNPs were prepared using plant extracts at room temperature and the formation of AgNPs was visually detected after the color changed to dark brown within few minutes. The biosynthesized AgNPs were characterized using the UV-vis spectroscopy, which confirmed the formation of AgNPs with a maximum peak at 437 nm due to the Plasmon resonance. The main active reduction agents were detected by Fourier Transmission infrared spectroscopy (FTIR). Also, the nanoparticles were characterized using Scanning electron microscope (SEM). The antifungal activity of AgNPs was investigated by agar well diffusion method, which revealed inhibition zones of 8 mm, 10 mm, 11 mm, 11 mm and 14 mm against Aspergillus flavus 1, A. parasiticus, A. flavus 2, A. ochraceus, and A. niger. The minimum inhibition concentration (MIC) was determined using micro broth dilution method. MIC values of AgNPs ranged from 652 - 2500 μg/ml. The fungi treated with AgNPs, were examined with (SEM), it was observed that the treated fungi were damaged. These results suggest that AgNPs have the potential to be used as an ideal eco-friendly approach to control toxigenic fungi.
Practical Study for the Effect of Speed, Direction of Acceleration and Type of Machine on Vibrations Transferred to the Steering Wheel Horticulture Tractor Type (Goldoni)  [PDF]
Ghazwan Ahmed Dahham, Saad Tawfik Muhamed, Shamel Mohammed Saleh
Engineering (ENG) , 2019, DOI: 10.4236/eng.2019.111005
Abstract: Field an experiment was carried out in the farms of Agriculture and forestry academy at University in Nineveh. The research was conducted to investigate a practical study for the effect of four forward speeds (1.9, 2.6, 3.8 and 4.7 km/hr.) and three acceleration direction of axes lateral, longitudinal and vertical, and two types machines control (Mower and Rotovators) on the vibrations transferred to the steering wheel horticulture tractor type (Goldoni). The vibration points on the handgrip were calculated and tested. Root mean square acceleration (RMS), given in m/sec2, was calculated. Results showed increased acceleration vibration of the three directions (longitudinal, lateral and vertical) transferred to the steering wheel tractor by increased forward speed. The Mower score recorded the highest acceleration vibration for the three directions of Rotovators. The levels of vibration emitted from tractor to hand an operator during the experiment was high comparing with standard mechanical vibration. Handgrip vibration intensity in the vertical direction is bigger than the lateral and longitudinal direction. The total vibration evaluating was denoted as the square root mean of the three sum value (lateral, longitudinal and vertical) directions. The paper purpose was measuring and analyzing vibration level transferred to the steering wheel and reduces the machine vibration. This paper is helpful for design in order to increase the develop safety systems in easy and economical way.
Type-2 Fuzzy Logic Controllers Based Genetic Algorithm for the Position Control of DC Motor  [PDF]
Mohammed Zeki Al-Faiz, Mohammed S. Saleh, Ahmed A. Oglah
Intelligent Control and Automation (ICA) , 2013, DOI: 10.4236/ica.2013.41015
Abstract:

Type-2 fuzzy logic systems have recently been utilized in many control processes due to their ability to model uncertainty. This research article proposes the position control of (DC) motor. The proposed algorithm of this article lies in the application of a genetic algorithm interval type-2 fuzzy logic controller (GAIT2FLC) in the design of fuzzy controller for the position control of DC Motor. The entire system has been modeled using MATLAB R11a. The performance of the proposed GAIT2FLC is compared with that of its corresponding conventional genetic algorithm type-1 FLC in terms of several performance measures such as rise time, peak overshoot, settling time, integral absolute error (IAE) and integral of time multiplied absolute error (ITAE) and in each case, the proposed scheme shows improved performance over its conventional counterpart. Extensive simulation studies are conducted to compare the response of the given system with the conventional genetic algorithm type-1 fuzzy controller to the response given with the proposed GAIT2FLC scheme.

Evolution and Role of Intraoperative Neurophysiological Monitoring in Intramedullary Spinal Cord Surgery: A 2-Year Series from Saudi Arabia  [PDF]
Saleh Baeesa, Emmanuel Labram, Mohammed Bin Mahfoodh, Mohammed Khalid, Youssef Al-Said
World Journal of Neuroscience (WJNS) , 2014, DOI: 10.4236/wjns.2014.44037
Abstract:

Introduction: Despite recent advances in neuroimaging and microsurgical techniques, surgical resection of spinal cord tumours remains a challenge. However, the evolution with advances and refinement of neurophysiological equipment and methodologies, intra-operative neurophysiolo- gical monitoring (IONM) is now regarded as an essential adjunct to the surgical management of intramedullary spinal cord tumours. This study aims to report our preliminary experience with IONM and emphasise its effective role of achieving maximum tumour resection and minimising neurological injury. Methods: This is a retrospective study performed at our institution between July 2012 and August 2013. It included a cohort of 6 consecutive patients presented with intramedullary spinal cord tumours. Their mean age was 26 years (range, 4 months - 37 years), all were males, and the mean follow up was 11.6 months. Results: We combined the use of somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs) in spinal cord surgery. SSEPs are monitored during the incision of the dorsal midline of the spinal cord and this was used in two of our patients and MEPs were used as an essential monitoring during the tumour resection. In addition, we used free-running electromyography (EMG) and muscle MEPs (mMEPs) during tumour resection. Four of our patients (two with ependymoma, one with ganglioglioma, and one with pilocytic astrocytoma) had complete tumour resection and two patients (pilocytic and diffuse astrocytoma) had IONM changes during surgery and had partial tumour resection. At 6-month follow up all our patients had made a good recovery with no new neurological sequelae. Conclusion: This small series and literature review is presented to add and improve the understanding of IONM in intramedullary spinal cord procedures and to reinforce the importance of IONM in optimising tumour resection and neurological outcome. Our series confirm that without D-wave monitoring, free-running EMG and MEP monitoring during tumour resection remain an important adjunct. We also draw attention to the fact that changes in the free-running EMG occur before any changes in the MEPs are noted.

 

Synthesis of Fluorinated Heterobicyclic Nitrogen Systems Containing 1,2,4-Triazine Moiety as CDK2 Inhibition Agents  [PDF]
Mohammed Saleh Tawfik Makki, Reda Mohammdy Abdel-Rahman, Faisal Mohammed Aqlan
International Journal of Organic Chemistry (IJOC) , 2015, DOI: 10.4236/ijoc.2015.53020
Abstract: New fluorine substituted heterobicyclic nitrogen system as imidozolopyrimidines (2,3), pyrimido- 1,2,4-triazinones (4-7), 1,2,4-triazinyl-1,2,4-triazine (12-16), 1,2,4-triazinyl-1,2,4-triazinones (14-17) and substituted thiobarbituric acids (19-20), have been synthesized using the reaction of 3- amino-5,6-di (4'-fluorophenyl)-1,2,4-triazine (1) with α,β–bifunctional compounds. Structures of the title compounds were characterized by UV, IR, 1H/13C-NMR and mass spectrometric method. The studied compounds were tested for CDK2 inhibiting activity in DNA damage, as well as in vitro anti-tumor activity.
A Review of Optimal Designs in Relation to Supply Chains and Sustainable Chemical Processes
Mohammed Saleh Al.Ansari
Modern Applied Science , 2012, DOI: 10.5539/mas.v6n12p74
Abstract: With the emerging importance of balancing environmental, social, and economic objectives within a company setting, growing awareness of planning of supply chains and sustainable optimal design has been brought into perspective. An immense amount of research has been devoted to this sector, in hopes of capturing these objectives to ensure long term sustainability. Among some of the approaches that have been developed, product design, inventory management, product recovery, production planning with an emphasis on remanufacturing, reverse logistics, and supply chains that are closed-looped have been given additional attention in various pieces of literature. We will review and analyze some of the research that has surfaced in regards to sustainable chemical processes along with supply chain design. Focus will be given to three main areas, (i) waste management and energy sufficient sustainable supply chains, (ii) sustainable supply chains and their effect on the environment, (iii) sustainable water management principals. The challenges that these three sectors face have been summarized, and all future opportunities have been highlighted. Environmental sustainability is an issue that receives a lot of attention in the press, journals, and media. Most of the discussions surrounding this debate focus on the environmental impacts that organizational supply chains have on the environment. The goal of this paper is to further investigate the environmental impact concerns, and how these concerns are impacting the operational and strategic management of company supply chains. The research we have complied is intended to give an overview of the practices that companies have adopted and to clarify that further research is still in the midst of being conducted.
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