Stability, stabilizability and exact controllability of a class of linear neutral type systems

Linear systems of neutral type are considered using the infinite dimensional approach. The main problems are asymptotic, non-exponential stability, exact controllability and regular asymptotic stabilizability. The main tools are the moment problem approach, the Riesz basis of invariant subspaces and the Riesz basis of family of exponentials.Comment: Conf\'erence pl\'eni\`er

Progress in genetics of coronary artery disease

No Abstract

Cardiomyopathy in Vici syndrome

No Abstract

Cantu syndrome in an Egyptian child

We report a 3 month old female, third in order of birth of non consanguineous Egyptian parents with the typical features of Cantu syndrome including coarse features, low frontal hairline, hairy forehead, broad flat nasal bridge, anteverted nares, long philtrum, small low set ears, high arched palate, excess hair on the cheeks, short neck and excess hair over extremities and back. The patient had patent ductus arteriosus ligation, and mild pulmonary hypertension. Our patient has an affected mother which is consistent with autosomal dominant inheritance.Keywords: Cantu syndrome, Hypertrichosis, Coarse feature

The Foundation of the Right Bank in Wadi-Zarat Dam

The geotechnical engineering characteristics of a calcareous crust formation are evaluated in order to determine the feasibility of its stability under the right bank of Wadi Zarat Dam. The crust is a rock similar, extremely heterogeneous, material with location of collapsing susceptibility when saturated. The formation is caverned and locally very permeable and can present a risk of losing the reservoir water, dissolution, settlement, and piping. In this case study, several alternatives to treat the crust formation are presented, discussed, and compared. Rational justifications for the adopted solution are given and the predicted performance during operation of the dam is provided in order to be compared with the observed behaviour

Study of quality of life and its determinants in patients after urinary stone fragmentation

<p>Abstract</p> <p>Background</p> <p>This study was designed to evaluate the health-related quality of life (HRQOL) of patients who had undergone lithotripsy for treatment of urinary stones and to identify factors that significantly affect the HRQOL of these patients.</p> <p>Methods</p> <p>A comparative cross-sectional study was performed at the main university and main Ministry of health hospitals in Riyadh, Saudi Arabia. All patients admitted to the urology service and who underwent lithotripsy for urinary stones during a 9-month period were included in the study. An observation period of 3-15 months following the last treatment was allowed before patients completed the QOL questionnaire. Information on socio-demographic, and medical characteristics, and number and type of lithotripsies were collected. The Medical Outcome Study Short-Form 36-item survey (SF-36) was used to assess HRQoL. For comparison, the HRQoL in an equal number of healthy individuals was investigated; multivariate analysis of variance was used for comparisons between groups.</p> <p>Results</p> <p>Compared with healthy subjects, lithotripsy patients had significantly higher mean scores in the different subscales of the SF-36 questionnaire such as physical functioning, vitality, role-physical, role-emotional and mental health, indicating a better HRQOL. Compared with patients who underwent ureteroscopic or extracorporeal shock-wave lithotripsies, those who underwent percutaneous lithotripsy had significantly worse mean scores for all the SF-36 scales, except for body pain. Factors impacting HRQOL of the patients were age, obesity, diabetes mellitus, and stone characteristics such as localization (in the kidney) and recurrence (multiple lithotripsies).</p> <p>Conclusions</p> <p>Post-lithotripsy, patients have a favorable HRQOL compared with healthy volunteers. Further prospective studies are warranted to confirm these results owing to the inherent limitations of the cross-sectional design and backward analysis of this study.</p

Autosomal recessive ichthyosis with limb reduction defect: A simple association and not CHILD syndrome

Ichthyosis is a genetically and phenotypically heterogeneous disease that can be  isolated and restricted to the skin manifestations or associated with extracutaneous symptoms. One of which is limb reduction defect known as CHILD syndrome; a rare inborn error of metabolism of cholesterol biosynthesis that is usually restricted to one side of the body. Here we describe an Egyptian child with generalized lamellar  ichthyosis and limb reduction defect. Most probably this is a simple association and not a rare case of CHILD syndrome with bilateral skin involvement.Keywords: Ichthyosis; Limb reduction; CHILD; Autosomal recessiv

Effect of Temperature and Relative Humidity on the Growth of Helminthosporium fulvum

The effects of temperature and relative humidity on the growth of Helminthosporium fulvum were investigated. Various temperature regimes of 10oC, 15oC, 20oC, 25oC, 30oC, 35oC and 40¢ªC were used to determine the temperature effect on the growth of H. fulvum. Maximum growth of H. fulvum was obtained at 25¢ªC and 30¢ªC temperatures. The fungus was also cultured on 100, 92.5, 85, 74 and 32.5% relative humidity regimes. The fungus showed maximum growth at 92.5 and 100% relative humidity. The growth of the fungus was observed to increase with increase in relative humidity and vice versa. There were significant differences (P¡Â0.05) in the growth of the fungus at different temperature and relative humidity regimes. The implication of these findings were discusse