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Search Results: 1 - 10 of 401180 matches for " Jaafer M. Owaid "
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A study of biochemical polymorphism in Carp (Cyprinus carpio): new alleles in transferring
Talib A. Jaayid,,Muntaha Y. Yousief,,Jaafer M. Owaid,Najim M. Aziz
Research Opinions in Animal & Veterinary Sciences , 2011,
Abstract: The present study was conducted to investigate the existence of polymorphism at transferrin (Tf) locus in the Carp (Cyprinus carpio). A polyacrylamide gel electrophoresis (PAGE) under alkaline condition method was used to distinguish Carp Tf alleles. Analysis of 116 samples revealed that all animals were polymorphic, showing many genotypes with clear biodiversity in the Tf gene. Seven Tf genotypes consisting of 4 homozygote types (CC, DD, FF and GG) and two heterozygote types (CD, DG and FG) were detected. These fractions are controlled by codominant autosomal genes according to the Mendelian laws of inheritance. The highest gene frequencies were calculated such as 0.50 for Tf D, 0.26 for Tf F and 0.12 for C and G. Thus, carp assemblages consistently tended to be more predominant to D allele. Differences between expected number and observed number for transferrin genotypes were no significant. Polyacrylamide electrophoresis, the technique employed in this study, allows rapid and efficient screening for the presence of polymorphism in Tf.
Irritable Bowel Syndrome among Medical and Non-Medical Northern Border University Students, Kingdom of Saudi Arabia: Across Sectional Study  [PDF]
Nagah Mohamed Abo El-Fetoh, Mohamed Mousa Abd El-Mawgod, Nesreen A. Mohammed, Hanan Saleh A. Alruwaili, Entsar Owaid M. Alanazi
Open Journal of Gastroenterology (OJGas) , 2016, DOI: 10.4236/ojgas.2016.66024
Abstract: Background: Irritable Bowel Syndrome (IBS) is a common functional gastrointestinal disorder (FGID), characterized by abdominal pain or discomfort and alteration in bowel habits. Aim of the study: To determine the overall prevalence, prevalence of each type and risk factors of IBS among Northern Border University (NBU) students, Arar, Kingdom of Saudi Arabia. Material and methods: We use cross sectional, descriptive study with multistage cluster probability sample. Using Rome III criteria questionnaire of IBS; which is a self-administrated consists of ten questions assessing the current status of an apparently normal person. The questionnaire is administrated to Northern Border University students. Results: A total of 228 University students of them, 94 (41.2%) males and 134 (58.8%) females were included in the study. The overall prevalence of IBS according to Rome III criteria in northern border University was (32.5%). The disease prevalence was 33.6% in females and 30.9% in males. Among the study participants, the most common type of IBS was the mixed one 12.7%, followed by the constipation predominant type 10.5%, then the diarrhea pre-dominant type 5.7% while the least common was unsubtyped cases (3.5%). Statistically significant increase in prevalence of this disease was found among female students (60.8% vs. 39.2% in males) (p-value < 0.05), the students who experienced psychic stress and irritability (79.7%) (p-value < 0.05) and students who were obese (p-value < 0.001). Conclusion: The results of this study concluded the prevalence rate of 32.5% for IBS among the students studying in Northern Border University. Stress and high body mass index were significantly associated with IBS. In addition, this study concluded that IBS was not significantly associated with socio-demographic characteristics and smoking.
Performance Characteristics of the Minkowski Curve Fractal Antenna
M. Ahmed,Abdul-Letif,M.A.Z. Habeeb,H.S. Jaafer
Journal of Engineering and Applied Sciences , 2012,
Abstract: The performance properties of the Minkowski curve fractal antenna have been investigated and compared with the performance properties of the traditional straight-wire dipole. Numerical simulations were done using NEC4 which is moment-method based software. Results of radiation pattern, voltage standing wave ratio, input impedance, gain and half power beamwidth are provided. The results show that the self similarity properties of the fractal shapes are translated into its multiband behavior. It is concluded that the Minkowski curve fractal can be used to achieve miniaturization in antenna systems while maintening the radiation properties of the traditional straight-wire dipole. Thus this fractal antenna is likely to have a very promising future in portable device applications.
Uso de fósforo 31 ressonancia nuclear magnética para avalia??o da prote??o do miocárdio utilizando cardioplegia sangüínea contínua e normotérmica
Barrozo, Carlos A. M;Ali, Imtiaz S;Panos, Anthony L;Al-Nowaiser, Owaid;Butler, Keith W;Haas, Nicholas;Salerno, Tomás A;Deslauriers, Roxanne;
Revista Brasileira de Cirurgia Cardiovascular , 1992, DOI: 10.1590/S0102-76381992000400010
Abstract: an isolated, blood perfused pig heart model was adapted for metabolic studies using 31 p nmr spectroscopy during continuous normothermic blood cardioplegia (cnbc). the experiment comprised two groups: in group i (n=5) the hearts were subjected to 1 hour of cnbc. in group ii (n=5) a 20 min period of ischemia was introduced in the middle of the period of cnbc. left ventricular function was assessed, in the beating heart, prior to the period of cnbc and after 60 min of cardioplegia, using an intra-ventricular balloon. during the entire period of the experiment, spectra were obtained using a 4.7 t/30 cm bore brukertm biospec 31p nmr spectrometer with 2 min of resolution. at the end of the experiments myocardial biopsies were taken for atp and phosphocreatine (pcr) analyses using high performance liquid chromatography (hplc). atp and pcr were maintained after the period of cardioplegic arrest (group i). however the group ii, complete loss of pcr was shown after 14 ± 2 min of normothermic ischemia, followed by an increase of inorganic phophate (pi) and decrease of intracellular ph. following reperfusion after cnbc, pcr, ph and pi returned normal values in 3 min. left ventricular function, assessed by end-systolic elastance, was maintained at 100±10% of control in group i. in the group ii, left ventricular function was 88 ± 7% (p<0.05) of the control. hplc analyses of the myocardial biopsies showed normal values for group i, atp (24 ± 3 μmol/g dry weight) and pcr (55 ± 14 μmol/g dry weight), but in group ii, despite normal levels of pcr after reperfusion, the atp levels decreased to 21 ± 3 μmol/g dry weight at the end of the experiments. these results showed that cardiac metabolism was seriously compromised after 14 min of normothermic ischemia and left ventricular function had decreased (group ii). however in group i, in which cnbc was used without interruptions, function and metabolism were preserved, suggesting this is the ideal technique to protect the heart during car
TCP Protocol and Red Gateway Supporting the QoS of Multimedia Transmission Over Wireless Networks
Mohammad Al Nabhan,Sufian Yousef,Jaafer AL-Saraireh
Information Technology Journal , 2006,
Abstract: This study presents the adaptation of Random Early Detection (RED) Gateway as an active buffer management algorithm for multimedia traffic in Wireless networks. We studied and modified features of RED algorithm showing that an appropriate RED algorithm can improve multimedia data quality of service by making a better control during congestion. Also we present some enhancements on the TCP protocol for wireless networks adaptation. The main contribution in this research is to propose a new RED gateway scheme that will work efficiently in wireless environments.
An Overview of Video Allocation Algorithms for Flash-based SSD Storage Systems
Jaafer Al-Sabateen,Saleh Ali Alomari,Putra Sumari
International Journal of Advanced Computer Sciences and Applications , 2012,
Abstract: Despite the fact that Solid State Disk (SSD) data storage media had offered a revolutionary property storages community, but the unavailability of a comprehensive allocation strategy in SSDs storage media, leads to consuming the available space, random writing processes, time-consuming reading processes, and system resources consumption. In order to overcome these challenges, an efficient allocation algorithm is a desirable option. In this paper, we had executed an intensive investigation on the SSD-based allocation algorithms that had been proposed by the knowledge community. An explanatory comparison had been made between these algorithms. We reviewed these algorithms in order to building advanced knowledge armature that would help in inventing new allocation algorithms for this type of storage media
An Overview of Video Allocation Algorithms for Flash-based SSD Storage Systems
Jaafer Al-Sabateen,Saleh Ali Alomari,Putra Sumari
Computer Science , 2012,
Abstract: Despite the fact that Solid State Disk (SSD) data storage media had offered a revolutionary property storages community, but the unavailability of a comprehensive allocation strategy in SSDs storage media, leads to consuming the available space, random writing processes, time-consuming reading processes, and system resources consumption. In order to overcome these challenges, an efficient allocation algorithm is a desirable option. In this paper, we had executed an intensive investigation on the SSD-based allocation algorithms that had been proposed by the knowledge community. An explanatory comparison had been made between these algorithms. We reviewed these algorithms in order to building advanced knowledge armature that would help in inventing new allocation algorithms for this type of storage media.
Relationships between clozapine and norclozapine plasma concentrations, clozapine dose, and clinical response in Tunisian patients with schizophrenia-treatment resistance  [PDF]
Aida Taieb, Fatma B’chir, Roland Molinié, José-Edmundo Nava-Saucedo, Jaafer Nakhli, Marc-André Fliniaux, Bechir Ben Hadj Ali, Saad Saguem
Open Journal of Psychiatry (OJPsych) , 2012, DOI: 10.4236/ojpsych.2012.24036
Abstract: The present study investigated relationships between clozapine dose, clozapine and norclozapine plasma concentrations, and clinical responses to clozapine treatment in Tunisian schizophrenics. Fourteen schizophrenia-treatment resistant patients, recruited for this study, were treated with clozapine for 45 days. Patient health improvement was assessed before and after each cycle of two weeks of clozapine therapy, using the Brief Psychiatric Rating Scale (BPRS). Plasma clozapine and norclozapine concentrations were determined by high-performance liquid chromatography (HPLC). No significant correlations between plasma clozapine and norclozapine concentrations and clinical health improvement among our schizophrenic patients were found. However, a significant correlation was observed between clinical health improvement given by BPRS scores and norclozapine plasma concentration to daily clozapine dose ratio (NCZ/D). Despite the small sample size of our study, our findings suggest that the clozapine therapy response variations observed in our patients may be, in part, explained by the interindividual differences in plasma norclozapine concentration to clozapine dose ratio (NCZ/D). So the NCZ/D parameter could be used as a good indicator for adjusting the clozapine dose-adaptation strategy and consequently for improving the clinical psychopathological state of schizophrenia-treatment resistant patients.
Study of Duct Characteristics Deduced from Low Latitude Ground Observations of Day-Time Whistler at Jammu  [PDF]
M. Altaf, M. M. Ahmad
International Journal of Astronomy and Astrophysics (IJAA) , 2013, DOI: 10.4236/ijaa.2013.33032
Abstract:

Propagation characteristics of low latitude whistler duct characteristics have been investigated based on day-time measurements at Jammu. The morphogical characteristics of low latitude whistlers are discussed and compared with characteristics of middle and high latitude whistlers. The Max. electron density (Nm) at the height of the ionosphere obtained from whistler dispersion comes out to be higher than that of the background which is in accordance with the characteristics of whistler duct. The equivalent width is found to be close to the satellite observations and the characteristics of whistler duct in low latitude ionosphere are similar to those in middle and high latitude ionosphere. The width of ducts estimated from the diffuseness of the whistler track observed during magnetic storm is found to lie in the range of 50 - 200 Km.

Review Article: Immobilized Molecules Using Biomaterials and Nanobiotechnology  [PDF]
Magdy M. M. Elnashar
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2010, DOI: 10.4236/jbnb.2010.11008
Abstract: Immobilized molecules using biomaterials and nanobiotechnology is a very interesting topic that touching almost all aspects of our life. It uses the sciences of biology, chemistry, physics, materials engineering and computer science to develop instruments and products that are at the cutting edge of some of today’s most promising scientific frontiers. In this review article, the author based on his experience in this arena has tried to focus on some of the supports for im-mobilization; the most important molecules to be immobilized such as DNA, cells, enzymes, metals, polysaccharides, etc and their applications in medicine, food, drug, water treatment, energy and even in aerospace. He specified a special section on what is new in the arena of supports and technologies used in enzyme immobilization and finally a recommendation by the author for future work with a special attention to up-to-date references.
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