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Search Results: 1 - 10 of 349 matches for " Dehbia Abed-Vieillard "
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Transient and Permanent Experience with Fatty Acids Changes Drosophila melanogaster Preference and Fitness
Justin Flaven-Pouchon, Thibault Garcia, Dehbia Abed-Vieillard, Jean-Pierre Farine, Jean-Fran?ois Ferveur, Claude Everaerts
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0092352
Abstract: Food and host-preference relies on genetic adaptation and sensory experience. In vertebrates, experience with food-related cues during early development can change adult preference. This is also true in holometabolous insects, which undergo a drastic nervous system remodelling during their complete metamorphosis, but remains uncertain in Drosophila melanogaster. We have conditioned D. melanogaster with oleic (C18:1) and stearic (C18:0) acids, two common dietary fatty acids, respectively preferred by larvae and adult. Wild-type individuals exposed either during a transient period of development–from embryo to adult–or more permanently–during one to ten generation cycles–were affected by such conditioning. In particular, the oviposition preference of females exposed to each fatty acid during larval development was affected without cross-effect indicating the specificity of each substance. Permanent exposure to each fatty acid also drastically changed oviposition preference as well as major fitness traits (development duration, sex-ratio, fecundity, adult lethality). This suggests that D. melanogaster ability to adapt to new food sources is determined by its genetic and sensory plasticity both of which may explain the success of this generalist-diet species.
Minimal representations of simple real Lie groups of non Hermitian type - The Fock model
Dehbia Achab
Mathematics , 2011,
Abstract: In the recent paper [AF12], we introduced an analysis of the Brylinski-Kostant model for spherical minimal representations for simple real Lie groups of non Hermitian type. We generalize here that analysis and give a unified geometric realization to a family of unitary irreducible representations of such groups.
Minimal representations of simple real Lie groups of Hermitian type - The Fock model
Dehbia Achab
Mathematics , 2012,
Abstract: In the recent paper [A12], a geometric realization to minimal representations of simple real Lie groups of non Hermitian type is given, based on the geometric setting introduced in [A11] and the analysis of the Brylinski-Kostant model, given in [AF12]. We give in this paper a geometric realization to minimal representations of simple real Lie groups of Hermitian and tube type.
Analysis of the Brylinski-Kostant model for spherical minimal representations
Dehbia Achab,Jacques Faraut
Mathematics , 2011,
Abstract: We revisit with another view point the construction by R. Brylinski and B. Kostant of minimal representations of simple Lie groups. We start from a pair $(V,Q)$, where $V$ is a complex vector space and $Q$ a homogeneous polynomial of degree 4 on $V$. The manifold $\Xi $ is an orbit of a covering of ${\rm Conf}(V,Q)$, the conformal group of the pair $(V,Q)$, in a finite dimensional representation space. By a generalized Kantor-Koecher-Tits construction we obtain a complex simple Lie algebra $\goth g$, and furthermore a real form ${\goth g}_{\bboard R}$. The connected and simply connected Lie group $G_{\bboard R}$ with ${\rm Lie}(G_{\bboard R})={\goth g}_{\bboard R}$ acts unitarily on a Hilbert space of holomorphic functions defined on the manifold $\Xi $
Symptomatic Trigeminal Neuralgia Pain Treatment Options—A Case Report  [PDF]
Abed Rahman
Open Journal of Anesthesiology (OJAnes) , 2015, DOI: 10.4236/ojanes.2015.59038
Abstract: Background: Severe pain is present in trigeminal neuralgia and may be devastating and debilitating. There are multiple modalities of nonsurgical techniques to help with pain and functionality. Patient: 47 year old male with 6 year history of facial pain due to trigeminal neuralgia. Treated at outside institution with medical management. Intervention: Left gasserian ganglion pulsed radiofrequency with acupuncture and biofeedback by pain psychologist. Results: >50% pain relief for greater than 12 months with improved quality of life. Conclusions: Trigeminal neuralgia may be one of the most challenging disorders to treat in the field of pain management due to the refractory and prolonged course of pain. The purpose of this article is to report the difficult treatment requiring true multidisciplinary treat to treat the severity of the patients pain. Due to his young age we opted for the pulsed radiofrequency as opposed to the thermal radiofrequency.
Septic cardiomyopathy
Antoine Vieillard-Baron
Annals of Intensive Care , 2011, DOI: 10.1186/2110-5820-1-6
Abstract: Reversible myocardial depression in patients with septic shock was first described in 1984 by Parker et al. using radionuclide cineangiography [1]. In a series of 20 patients, they reported a 65% incidence of left ventricular (LV) systolic dysfunction, defined by an ejection fraction <45% [1]. In 1990, using transthoracic echocardiography, Jardin et al. reported the same results [2]. In a canine model simulating human septic shock, Natanson et al. demonstrated that intrinsic LV performance was actually depressed in all animals and not corrected by volume expansion [3]. Finally, more recently, Barraud et al. confirmed the presence of severe depressed intrinsic LV contractility using LV pressure/volume loops in lipopolysaccharide-treated rabbits [4]. All of these studies, and many others not cited in this introduction, demonstrate the reality of the impairment of intrinsic LV contractility in septic shock. For many years, septic cardiac dysfunction was largely underestimated because the hemodynamic device used, i.e., the pulmonary artery catheter, was not appropriate for establishing such a diagnosis. Development of new hemodynamic tools at the bedside, such as echocardiography, allowed better characterization of the septic cardiomyopathy [5]. The following review explains the mechanisms of such a depression, its characteristics, incidence, and finally its impact on treatment and prognosis. We decided not to deal with the place and the role of biomarkers, which will be presented in a future review of the journal.Many factors may contribute to cardiac depression during sepsis. Studies performed in humans have ruled out coronary hypoperfusion requiring coronary intervention as a cause of LV systolic dysfunction in sepsis [6,7]. Of course, patients with coronary disease may behave differently.On the other hand, the role of cytokines has been strongly advocated in the genesis of septic cardiomyopathy. In 1985, Parrillo et al. demonstrated in vitro that myocardial cell sho
Teachers Dietary Practices during School Day in Jeddah, Western Saudi Arabia  [PDF]
Balkees Abed Bakhotmah
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.311203
Abstract: The schools teachers dietary practices during the school day should reflect a healthy dietary pattern both in quality and quantity of foods consumed particularly in countries that witness an epidemic of obesity related Type-2 diabetes mellitus. The objective of this study was to identify the local dietary practices of the schools teachers in Jeddah, western Saudi Arabia. A Cross-section observational study using a pre-designed questionnaire to identify the local pattern of dietary practices during school day of a representative sample of schools teachers was conducted in Jeddah. The questionnaire was piloted and administered to a sample of 140 teachers working in 15 schools across Jeddah. A total of 140 Saudi teachers participated. The mean age of the sample was 34.9 ± 6.1 years. Two thirds (66.4%) were females. Overall, 40.5% were overweight and 22.4% were obese. During the school day, tea and Arabic coffee were the commonest daily consumed drinks (67.9%, 65.7% respectively). Almost half of the sample consumed dates on a daily basis (51.4%). Breads and cheese sandwiches were always consumed by 45% and 33.6% respectively. Two thirds of females 67.7% and 55.3% of males were used to have breakfast and/or snack with their colleagues at school. Males preferred to purchase ready-made traditional foods from outside while females preferred the schools canteens. The percentages of overweight and obesity were higher among males compared to females (46.5 versus 37%) and (25.6% versus 20.5%) respecttively. It is concluded that the dietary practices of Saudi school teachers during school day vary according to gender. Findings indicate the need for dietary modification programs directed towards schools teachers in populations which report high prevalence rates of diabetes of similar cultural backgrounds.
Prevalence of Obesity among Type 2 Diabetic Patients: Non-Smokers Housewives Are the Most Affected in Jeddah, Saudi Arabia  [PDF]
Balkees Abed Bakhotmah
Open Journal of Endocrine and Metabolic Diseases (OJEMD) , 2013, DOI: 10.4236/ojemd.2013.31004

Objective: To identify the high risk group for developing obesity among a cohort of Saudi diabetic patients. Methods: A cross sectional study on a random sample of known type 2 diabetic patients who were visiting seven primary health care centers in Jeddah,Saudi Arabiawas conducted. Participants were categorized according to their Body Mass Index BMI into 4 groups. Prevalence of obesity was correlated to patients’ gender, age, smoking, educational level and employment status to identify the significant ones. Results: A total of 723 diabetics were included. Males to females’ ratio were almost equal (50.8% and 49.2% respectively). The mean BMI of group was 29.3 ± 6.1. Only (21.9%) of the studied diabetics were in their ideal range of body weight. The remaining was almost equally categorized as overweight or obese. More than one third (38.3%) were obese; among the obese: 22.4% had mild obesity, and 15.9% severe obesity. Percentage of severely obese females were almost triple that of males. The housewives were the least to have normal BMI ratio (15.2%). According to the calculated BMI it is found that being a non-smoker housewife is the significant predicting factor for being obese p < 0.05. Conclusion: Prevention and educational programs should target non-smokers housewives Saudi diabetic patients who are at higher risk for developing obesity.

Comparative Analysis of TCP-Protocol Operation Algorithms in Self-Similar Traffic  [PDF]
Abed Saif Alghawli
Communications and Network (CN) , 2013, DOI: 10.4236/cn.2013.52016

This paper presents simulation modelling of network under the conditions of self-similar traffic and bottleneck occurrence. The comparative analysis of different TCPs (NewReno, Reno, Tahoe and etc.) has been conducted along with the testing of various algorithms of these protocols activity. The use of TCP Vegas has been proved to be the most effective.

Characteristics and Risk Factors Attributed to Coronary Artery Disease in Women Attended Health Services in Gaza-Palestine Observational Study  [PDF]
Yehia Abed, Amal Jamee
World Journal of Cardiovascular Diseases (WJCD) , 2015, DOI: 10.4236/wjcd.2015.51002
Abstract: Coronary artery disease (CAD) is the leading cause of death in both sexes worldwide, and becomes number one killer in women due to many factors including increase in traditional risk factors, delays in apparition of symptoms, under estimation of diagnosis test and treatment. Our study aims to identify risk factors for coronary artery disease among women with chest pain underwent coronary angiography during years (2010-2013) in cardiology center. The study design is an observational among 688 women-aged 32 - 96 years; the mean age of our study population is 61 years. Risk factors are abstracted from patients’ files. Women with documented coronaries disease tend to be older, have higher, systolic blood pressure, serum level of triglyceride, and impaired clearance creatinine. 59.4% of them are menopause with higher prevalence of hypertension and diabetes (58.6% and 63.6%). Significant positive association is found in women with myocardial infarction, unstable angina, stable angina and presence of obstructive coronary artery disease respectively (89.6%, 82.3%, 59.1%) in opposite women presented with atypical chest pain have high prevalence of normal coronaries (95.7%). About 57.6% have more than three risk factors, and 55.3% are obese or overweight. In addition, 42.1% of them have impaired systolic function. We conclude that cardiovascular risk factors are highly prevalent among Palestinians women in Gaza and the combination of risk factors is common. Interventions to minimize CAD in our population are needed.
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