High prevalence of double Plasmodium falciparum dhfr mutations at codons 108 and 59 in the Sistan-Baluchistan province, Iran

info:eu-repo/semantics/publishedVersio

Neonatal Seizure: Etiology and Type

ObjectiveNeonates, for many reasons, are at particular risk for the development of seizures, which are a strong predictor of later morbidity and mortality in infants.We undertook this study to determine the incidence, etiologic distribution and neonatal seizure type in neonates with hospital admission over a period of 4 years.Materials and MethodsThis, a retrospective study of newborns admitted in hospital with a diagnosis of neonatal seizures, was conducted over a 4 year period between March 2001 and March 2005.Data were obtained from hospital records was analyzed using the Chi-square test.ResultsOf 4541 newborns, admitted to hospital, during the study period, seizures occurred in 110 neonates. The incidence of neonatal seizures was 2.4%; the causes of neonatal seizure were Hypoxic-Ischemic Encephalopathy (HIE) - 36.4%, infections -19.1%, metabolic abnormalities - 7.3%, Intra Cranial Hemorrhage (ICH) - 2.7%, structural disorders - 1.8% and in 32.7% of cases, the cause was unknown.Subtle seizures (39.1%) were the most common type of seizures; and the other types were myoclonic (17.3%), clonic (10.0%), Tonic (7.3%), Generalized Tonic Clonic Seizures (GTCS) (12.7%) and in 13.6% of cases the type of seizure was not mentioned. Mortality rate was 13.6%.ConclusionHealth care workers and parents need to be made aware of subtle seizures and the importance of timely and appropriate treatment to decrease any further complications

Localization in one-dimensional chains with L\'evy-type disorder

We study Anderson localization of the classical lattice waves in a chain with mass impurities distributed randomly through a power-law relation $s^{-(1+\alpha)}$ with $s$ as the distance between two successive impurities and $\alpha>0$. This model of disorder is long-range correlated and is inspired by the peculiar structure of the complex optical systems known as L\'evy glasses. Using theoretical arguments and numerics, we show that in the regime in which the average distance between impurities is finite with infinite variance, the small-frequency behaviour of the localization length is $\xi_\alpha(\omega) \sim \omega^{-\alpha}$. The physical interpretation of this result is that, for small frequencies and long wavelengths, the waves feel an effective disorder whose fluctuations are scale-dependent. Numerical simulations show that an initially localized wavepacket attains, at large times, a characteristic inverse power-law front with an $\alpha$-dependent exponent which can be estimated analytically

A note on quasi-Gorenstein rings

In this paper, after giving a criterion for a Noetherian local ring to be quasi-Gorenstein, we obtain some sufficient conditions for a quasi- Gorenstein ring to be Gorenstein. In the course, we provide a slight generalization of a theorem of Evans and Griffith.Comment: To appear in Arch. Mat