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Search Results: 1 - 10 of 4009 matches for " Zaki Noah Hasan "
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New Combined Scoring System for Predicting Respiratory Failure in Iraqi Patients with Guillain-Barré Syndrome
Zaki Noah Hasan
Brain. Broad Research in Artificial Intelligence and Neuroscience , 2010,
Abstract: The Guillain-Barré syndrome (GBS) is an acute post-infective autoimmune polyradiculoneuropathy, it is the commonest peripheral neuropathy causing respiratory failure. The aim of the study is to use the New Combined Scoring System in anticipating respiratory failure in order to perform elective measures without waiting for emergency situations to occur. Patients and methods: Fifty patients with GBS were studied. Eight clinical parameters (including progression of patients to maximum weakness, respiratory rate/minute, breath holding count (the number of digits the patient can count in holding his breath), presence of facial muscle weakness (unilateral or bilateral), presence of weakness of the bulbar muscle, weakness of the neck flexor muscle, and limbs weakness) were assessed for each patient and a certain score was given to each parameter, a designed combined score being constructed by taking into consideration all the above mentioned clinical parameters. Results and discussion: Fifteen patients (30%) that were enrolled in our study developed respiratory failure. There was a highly significant statistical association between the development of respiratory failure and the lower grades of (bulbar muscle weakness score, breath holding count scores, neck muscle weakness score, lower limbs and upper limbs weakness score , respiratory rate score) and the total sum score above 16 out of 30 (p-value=0.000) . No significant statistical difference was found regarding the progression to maximum weakness (p-value=0.675) and facial muscle weakness (p-value=0.482). Conclusion: The patients who obtained a combined score (above 16’30) are at great risk of having respiratory failure.
Clinical Patterns of Primary Dystonias among Hospitalized Patients in Baghdad and Kut in Iraq  [PDF]
Saadoun Al Ameer, Samer Mohammed Saeed, Bahaa Hassan, Zaki Noah Hasan
World Journal of Neuroscience (WJNS) , 2015, DOI: 10.4236/wjns.2015.55035
Abstract: Aim of study: This study was carried out to describe characteristics of 22 primary dystonic patients and their response to therapy. Patients and method: Twenty-two patients were entered into the study from Baghdad teaching hospital, Al-Kadhymia teaching hospital in Baghdad, privet nursery home teaching hospital in Baghdad, and Alzehraa teaching hospital in Kut south to Baghdad from January 2005 to January 2008. All cases were primary dystonia, secondary dystonia has been excluded from our study. Neuroimiging and slit Lampe examination have been done for all cases, L-Dopa in dose of 10/mg/kg/day for 2 weeks was giving for all patients. Type of study is a retrospective cohort study. All patients were followed in the outpatient clinics of the hospitals mentioned previously with frequent neurological examinations. Results: Out of 22 patients, 15 (68%) patients were females, 7 (32%) were males. According to descriptive classifications of dystonia by age of onset, fourteen patients (64%) were of early onset and eight (36%) being late onset (26 years and older). Three patients had generalized dystonia, 19 patients had focal dystonia {11 (58%) cases were cervical (TORTICOLIS) type, 5 (26%) blepharospasm type and segmental (LIMBES) dystonia 3 (16%)}. All cases were given L-DOPA in dose 10/mg/kg for 2 weeks, only two cases shown clinical response for the drug inform of absence of abnormal movements and improve quality of life. Conclusion: Dystonia is rare; however, early onset dystonia are more common than late onset. Dystonia are more common in females than in males and focal dystonia is more common than generalized dystonia.
Comparison between Metastatic Spinal Tumour of Unknown Primary Tumour with a Known Primary  [PDF]
Wissam Jassim Sagban, S.M.S. Ridha, Zaki Noah Hasan
World Journal of Neuroscience (WJNS) , 2016, DOI: 10.4236/wjns.2016.61002
Abstract: Patients presented with spinal metastases from unknown primary tumours are rare. In this research we evaluated all patients with metastatic spinal tumour of unknown primary tumour, all patients were evaluated pre-operatively and comparison was done to those patients who had known primary tumour the study aimed to compare the group with known primary and the group with the unknown primary regarding the: mean age, gender, duration of symptoms, complication rate, region of the spine affected by metastasis, presence or absence of other skeletal or visceral metastasis, histological cell type and neurological outcome. Method: A retrospective study was performed on 40 patients presented to Neuroscience hospital in Baghdad from January 2010 till January 2014; all patients with metastatic spinal tumour were included in our study. We reviewed all patients’ records including age, sex, primary tumour, duration of their symptoms, neurological out come and complications. Results: Out of the 40 patient who presented with spinal tumours that underwent surgery duo to metastatic spinal tumour, five patients presented with spinal compression duo to metastatic tumour of unknown primary tumour (12.5%). The mean age was 64 years, 4 male and one female. For those with a known primary tumour mean age was 61 year, 22 male 13 female. Duration of symptoms prior to surgery was the same 180 days for those with unknown primary and 190 day for those with known primary tumours. They also had similar neurological outcome (80%) remain the same or improved post operatively for those with unknown primary and (85.7%) for those with a known primary tumour, and a similar complication rate for unknown primary was 25% versus 28% for known. The primary site of metastatic spinal tumour of unknown primary was confirmed after histopathology all shown adenocarcinoma four from the lung (80%) and one from colorectal. While the most common known carcinoma site were the lung 18 patient (51.4%), colorectal 8 (22.8%), breast 7 (20%), and renal 2 (5.71%). All patient who complain from secondary spinal metastasis with unknown primary tumour didn’t show any other skeletal or visceral metastasis, while those with a known primary tumour 6 patient out of 35 (17.1%) shown involvement of other site, the indication of surgery was to remove cord compression and restore neurological deficit. The most common site for metastasis was the dorsal spine for those of an unknown primary tumour 4 out of 5 patients (80%), and for those of a known primary tumour it was the lumbar area 28 out of 35 patient (80%). In conclusion
Hypertension as a Risk Factor: Is It Different in Ischemic Stroke and Acute Myocardial Infarction Comparative Cross-Sectional Study?
Zaki Noah Hasan,Mousa Qasim Hussein,Ghazi Farhan Haji
International Journal of Hypertension , 2011, DOI: 10.4061/2011/701029
Abstract: Objective. To assess differences in age of onset, hypertension duration, type of drug, treatment compliance, and salt-free diet compliance between patients with stroke and myocardial infarction. Patients and Methods. The study was conducted in 3 hospitals in Baghdad between June 2010 and June 2011. First group includes 81 stroke patients (36 females and 45 males), age ranges between (33–82 years). Second group includes 110 myocardial infarction patients (46 females and 64 males), ages ranges from (23–76 years). Results. Salt-free diet noncompliance was seen in 69% and 62% of Myocardial infarction and stroke groups, respectively. Silent hypertension was seen in 6.3% and 19.7% of myocardial infarction and stroke groups, respectively. Noncompliant on antihypertensive therapy was seen in 61%, 71%, and 48% of the total, myocardial infarction, and stroke groups, respectively. The drug type was 24% angiotensin converting enzyme inhibitor, 18.8% combined drugs, 16.2% Beta Blocker, 11% angiotensin 11 receptor blocker, 10.4% calcium channel blocker and 7.3% diuretic. In stroke group, the commonest drug was 23% angiotensin converting inhibitor and the least (5%) was angiotensin receptor blocker. In myocardial infarction group, the commonest drug was 25% Angiotensin Converting Inhibitor and the least (8%) was diuretic. Discussion and Conclusion. Silent hypertension was high in Iraq. Salt-free diet noncompliance was high in both groups; drug noncompliance was significantly higher in patients with myocardial infarction. Angiotensin 11 receptor blocker use was associated significantly with myocardial infarction more than in stroke.
Hypertension as a Risk Factor: Is It Different in Ischemic Stroke and Acute Myocardial Infarction Comparative Cross-Sectional Study?
Zaki Noah Hasan,Mousa Qasim Hussein,Ghazi Farhan Haji
International Journal of Hypertension , 2011, DOI: 10.4061/2011/701029
Abstract: Objective. To assess differences in age of onset, hypertension duration, type of drug, treatment compliance, and salt-free diet compliance between patients with stroke and myocardial infarction. Patients and Methods. The study was conducted in 3 hospitals in Baghdad between June 2010 and June 2011. First group includes 81 stroke patients (36 females and 45 males), age ranges between (33–82 years). Second group includes 110 myocardial infarction patients (46 females and 64 males), ages ranges from (23–76 years). Results. Salt-free diet noncompliance was seen in 69% and 62% of Myocardial infarction and stroke groups, respectively. Silent hypertension was seen in 6.3% and 19.7% of myocardial infarction and stroke groups, respectively. Noncompliant on antihypertensive therapy was seen in 61%, 71%, and 48% of the total, myocardial infarction, and stroke groups, respectively. The drug type was 24% angiotensin converting enzyme inhibitor, 18.8% combined drugs, 16.2% Beta Blocker, 11% angiotensin 11 receptor blocker, 10.4% calcium channel blocker and 7.3% diuretic. In stroke group, the commonest drug was 23% angiotensin converting inhibitor and the least (5%) was angiotensin receptor blocker. In myocardial infarction group, the commonest drug was 25% Angiotensin Converting Inhibitor and the least (8%) was diuretic. Discussion and Conclusion. Silent hypertension was high in Iraq. Salt-free diet noncompliance was high in both groups; drug noncompliance was significantly higher in patients with myocardial infarction. Angiotensin 11 receptor blocker use was associated significantly with myocardial infarction more than in stroke. 1. Introduction Hypertension is a progressive cardiovascular syndrome arising from complex etiologies. Early markers of the syndrome are often present before persistent blood pressure elevation. Progression is strongly associated with functional and structural abnormalities that damage the heart, kidneys, brain, and vasculature [1]. Based on population-based survey conducted in 1979 arterial hypertension comprises 12% of the Iraqi population [2]. After that, there is only small report from selected Primary Health Care Centers in Nasiriya city south of Iraq, reported 46.1% of study population were hypertensive [3]. Hospitals morbidity data provided by Iraqi Ministry of Health in 2004 demonstrates a 65% increase of the hospital admission due to coronary heart disease (CHD) and stroke and more than a fivefold increase in outpatient visits with the same diagnosis between 1989 and 1999. The major antihypertensive drugs are provided to the
Optimized Quality of Service for Real-Time Wireless Sensor Networks Using a Partitioning Multipath Routing Approach
Mohammed Zaki Hasan,Tat-Chee Wan
Journal of Computer Networks and Communications , 2013, DOI: 10.1155/2013/497157
Abstract: Multimedia sensor networks for real-time applications have strict constraints on delay, packet loss, and energy consumption requirements. For example, video streaming in a disaster-management scenario requires careful handling to ensure that the end-to-end delay is within the acceptable range and the video is received properly without any distortion. The failure to transmit a video stream effectively occurs for many reasons, including sensor function limitations, excessive power consumption, and a lack of routing reliability. We propose a novel mathematical model for quality of service (QoS) route determination that enables a sensor to determine the optimal path for minimising resource use while satisfying the required QoS constraints. The proposed mathematical model uses the Lagrangian relaxation mixed integer programming technique to define critical parameters and appropriate objective functions for controlling the adaptive QoS constrained route discovery process. Performance trade-offs between QoS requirements and energy efficiency were simulated using the LINGO mathematical programming language. The proposed approach significantly improves the network lifetime, while reducing energy consumption and decreasing average end-to-end delays within the sensor network via optimised resource sharing in intermediate nodes compared with existing routing algorithms. 1. Introduction A typical sensor network comprises a large number of multifunctional, low-cost, and low-power nodes that are deployed densely and randomly in an environment for monitored sensing to control the environment, perform local processing, and communicate results with a base station that performs most of the complex processing. One of the many challenges concerning wireless sensor networks (WSNs) is how to provide Quality of Service (QoS) parameter guarantees in real-time applications. Several approaches and protocols have been proposed in the literature for QoS parameter support in these types of networks [1, 2]. Energy consumption is considered to be the most important constraint in WSNs because of the low power and the processing factors. These factors reduce the QoS and the lifetime of the network. The primary concern is how to properly use resources (for deriving multimedia content) to provide appropriately shared data among all of the transmission radios while maintaining a proper level of imaging and video data transmission. The main goal is the appropriate use of multimedia resources by properly maintaining a level of optimized QoS, which further depends on the performance of the
Does Pay Disparity Really Hamstring Team Performance? A Study of Professional Ice Hockey Players  [PDF]
Noah Stefanec
Sociology Mind (SM) , 2012, DOI: 10.4236/sm.2012.24058
Abstract: Here, I employ an unbalanced panel of data from the National Hockey League (NHL) to examine the impact of pay disparity on team-cohesiveness. I find evidence to suggest the existence of a negative relationship between higher degrees of within-position pay disparity and team performance; the evidence reported here shows a simple monotonic elasticity of team performance with respect to pay disparity to be roughly 19%.
Land Use and Land Cover Changes in Arid Region: The Case New Urbanized Zone, Northeast Cairo, Egypt  [PDF]
Rafat Zaki, Abotalib Zaki, Saad Ahmed
Journal of Geographic Information System (JGIS) , 2011, DOI: 10.4236/jgis.2011.33015
Abstract: The spatial characteristics of land cover are useful for understanding the various impacts of human activity on the overall ecological conditions of the urban environment. The multi-temporal Landsat images (TM) between the years of 1990 and 2003 were used together with the Geographic Information System (GIS) techniques to evaluate the environmental changes in the area around Gabal El Hamza and the surrounding urban expansion in the new urban cities at the northeast side of the Greater Cairo by using the post classification change detection technique and field investigation. Five major units were determined including: urban, cultivated land, Holocene sand dunes, Oligocene basalt and Miocene–Pleistocene sediments. The cultivated cover changed from 89.6 to 150.4 km2 for the years of 1990 and 2003 respectively. The urban area increased from 49.5 to 120.9 km2 with a great value of change reached 71.3 km2 . The basaltic exposures changed from 3 to 3.75 km2 . The sandy cover decreased from 68.9 to 60.1 km2 and the exposures of the rock units changed from 904.8 to 780.8 km2 with removing 124 km2 in 13 years. The total accuracy of the Landsat-derived land cover data was 95 and 92% for the years 1990 and 2003 respectively. Landsat TM thermal infrared data indicated that the surface temperature was strongly affected by the land cover changes.
Application of Hyperspectral Band Elimination Technique to PVT Images of Composite Structures  [PDF]
Mahmoud Zaki Iskandarani
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.410090
Abstract: A new approach to NDT of composite structures using Band Elimination of the analyzed image index by Hyperspectral image analysis approach is presented and discussed. The matrix Band Elimination technique allows the monitoring and analysis of a components structure based on Filtering of bands and correlation between sequentially pulsed thermal images and their indices. The technique produces several matrices resulting from frame deviation and pixel redistribution calculations for intelligent classification and property prediction. The obtained results proved the technique to be capable of identifying damaged components with ability to model various types of damage under different conditions.
Optical Measurements and Speckle Photography for Thermotropic Liquid Crystals Mixtures  [PDF]
Ayman A. Zaki
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.44073
Abstract:

In this work, an experimental approach of speckle photography was used for measuring birefringence of thermotropic liquid crystals mixtures at different wavelengths in the visible region. Also the dispersion relations were investigated. The values of the refractive indices were measured for these mixtures of thermotropic liquid crystals in isotropic and liquid crystal phase at different wavelengths. The effect of the end group of these LCs used on the values of birefringence was investigated and discussed.

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