Study of Properties for Ca (a, n)Ti Reactions and n-Yield for Ca Isotopes (A=41-50)

In this study, (44Ti – 53Ti) isotopes for one of intermediate elements (A>40) from Ca (?, n)Ti reactions with alpha energy from (10 to 50) MeV are used according to the available data of reaction cross sections obtained from Lab (TENDL-2012). The more recent cross sections data of Ca (?, n)Ti reaction is reproduced in fine steps of (0.5MeV), by using (MATLAB R2008b) program. These cross sections together with the stopping powers which calculated from the Zeigler formula by using SRIM-2013 have been used to calculate the n-yield for reaction by depend on Ca isotopes (41Ca – 50Ca) as targets, and then clarify the behavior between the energies which corresponding to these cross sections and neutron yield for isotopes, and then we drowned the relationship between the n-yield for these reactions and symmetry at these energies. Was obtained on mathematical formulas and find constants those equations and these equations were calculated yield neutron and comparing with theoretical values ??also studying the properties of these isotopes, calculated binding energy and reduced mass and also were calculated Q- value and threshold energy for each reaction and the relative abundance of the isotopes of entering and leaving for alpha reactions. And then drawing scheduled and discusses the results. Keyword: Binding energy, Cross-Section, Neutron Yield, stopping power, Asymmetry and empirical formula.

Genotyping of PPAR-γ gene polymorphism in Egyptian neonates affected with sepsis disease and its severity

Background: Peroxisome Proliferator-Activated Receptor gamma (PPARγ) is a ligand-dependent transcription factor involved in inflammatory process. PPAR-γ gene was mentioned as having a modulating role in the pathological status of sepsis. The present study aimed to make a correlation between The Pro12Ala polymorphism in PPAR-γ gene and occurrence of neonatal sepsis and its severity among a sample of Egyptian neonates suffering sepsis.Subjects and methods: This case-control study included 30 neonates (11 females and19 males) newly admitted with neonatal sepsis at the intensive care unit (NICU) (mean age 10.3 days ± 6.23). The control group included 50 age and sex matched neonates (23 females and 27 males) (mean age 10.20 days ± 5.36 days). All the neonates (preterm and full term) included were with clinical signs and laboratory data consistent with neonatal sepsis. Genotyping for PPARc gene region harboring the Pro12Ala variant locus were carried out using Tetra ARMS technique.Results: About 56.7% of the patients group was homozygote (GG) for polymorphic locus (coding for Alanine/Alanine) while 30% was heterozygote for polymorphic locus (CG) (coding for Proline/Alanine) and up to 13.3% was homozygote for the polymorphic locus (CC) (coding for Proline/Proline). Compared to the control group where homozygotes for CC were the most prevalent (90%) and the CG were 10% with absence of GG genotypes. There was a strong  statistical significant difference between patients and the normal control group as regards  prevalence of PPAR-γ gene  polymorphism in occurrence of neonatal sepsis and its severity. Also, there were strong relation between genotype GG and low birth weight, neonatal fever, prematurity and depressed neonatal reflexes.Conclusion: PPAR-γ gene has been suggested to be a candidate gene for neonatal sepsis. Therefore, Pro12Ala polymorphism might be useful in predicting the risk factor of neonatal sepsis and its severity

Prevalence and behavioral risk factors for STIs/HIV among attendees of the Ministry of Health hospitals in Saudi Arabia

Introduction: Sexually transmitted infections (STI) are a major public health, social, and economic problem leading to morbidity, mortality, and stigma. This study was conducted to determine the prevalence of STIs, investigate behavioral risk factors and the relationship between the STIs/HIV and demographic factors. Methodology: A cross-sectional survey was conducted between 2013 and 2014 among attendees of the Ministry of Health hospitals. Results: The total number of participants was 3,994 (2,441 males and 1,553 females), with a mean age of 31.95 ± 9.45 years (range 12 to 77 years). The prevalence of STIs and HIV was 6.2% and 0.05% respectively. The mean age for infected people with STIs was 29.42 ± 7.51, vs. 32.12 ± 9.55 for non infected (p < 0.05). There was no diffference between infected and non infected people regarding gender, occupation and marital status. The prevalence of STIs was more commonly reported among non-Saudi (10.9%). Drug use (OR = 4.74; 95%; CI: 3.47–6.48), intravenous drug use (OR = 4.51; 95% CI: 1.45–13.12), illegal sex (OR = 10.7; 95% CI: 7.62–13.32), sex for money (OR = 6.36; 95% CI: 4.52–8.93), sex for pleasure (OR=9.76; 95% CI: 7.29–13.07) were significantly associated with STIs. Conclusion: The prevalence of STIs including HIV in Saudi Arabia is low compared to other countries in the region and globally

Seismic Anisotropy and Subduction-Induced Mantle Fabrics beneath the Arabian and Nubian Plates Adjacent to the Red Sea

For most continental areas, the mechanisms leading to mantle fabrics responsible for the observed anisotropy remain ambiguous, partially due to the lack of sufficient spatial coverage of reliable seismological observations. Here we report the first joint analysis of shear-wave splitting measurements obtained at stations on the Arabian and Nubian Plates adjacent to the Red Sea. More than 1100 pairs of high-quality splitting parameters show dominantly N-S fast orientations at all 47 stations and larger-than-normal splitting times beneath the Afro-Arabian Dome (AAD). The uniformly N-S fast orientations and large splitting times up to 1.5 s are inconsistent with significant contributions from the lithosphere, which is about 50–80 km thick beneath the AAD and even thinner beneath the Red Sea. The results can best be explained by simple shear between the lithosphere and the asthenosphere associated with northward subduction of the African/Arabian Plates over the past 150 Ma

Spectral-Domain Optical Coherence Tomography of Preclinical Chloroquine Maculopathy in Egyptian Rheumatoid Arthritis Patients

Purpose. To evaluate the role of spectral-domain optical coherence tomography (SD-OCT) in early detection of Chloroquine maculopathy in rheumatoid arthritis (RA) patients. Methods. 40 left eyes of 40 female rheumatoid arthritis patients who received treatment chloroquine for more than one year were recruited in the study. All patients had no symptoms or signs of Chloroquine retinopathy. They were evaluated using SD-OCT, where the Central Foveal Thickness (CFT), parafoveal thickness and perifoveal thickness, average Retinal Nerve Fiber Layer (RNFL) thickness, and Ganglion Cell Complex (GCC) measurements were measured and compared to 40 left eyes of 40 normal females. Results. The mean CFT was found to be thinner in the Chloroquine group (238.15 µm ± 22.49) than the normal controls (248.2 µm ± 19.04), which was statistically significant (p value = 0.034). The mean parafoveal thickness was lesser in the Chloroquine group than the control group in all quadrants (p value 0.05) in all quadrants. No significant difference was detected between the two groups regarding RNFL, GCC, or IS/OS junction. Conclusions. Preclinical Chloroquine toxicity can lead to early thinning in the central fovea as well as the parafoveal regions that is detected by SD-OCT

Density waves in dry granular media falling through a vertical pipe

We report experimental measurements of density waves in granular materials flowing down in a capillary tube. The density wave regime occurs at intermediate flow rates between a low density free fall regime and a high compactness slower flow.Comment: LaTeX file, 17 pages, 6 EPS figures, Phys.Rev.E (Feb.1996

Study The Proton Momentum Distribution of The 51V (γ,p)50Ti Reaction at Energy of 59.2 Mev

The technique developed by Findlay and Owens for the extraction of a consistently effective momentum distribution from the 51V (γ,p)50Ti reaction data is applied to the cross sections obtained for each of the discrete low lying excited states ( 0.0 , 1.6 , 2.7 , 3.2 , 3.8 , 4.4 and 6.0 ) MeV ,respectively.The momentum density and momentum mismatch have been calculated using the method of Findlay and Owens for each excited state. This program has been written for this purpose using Fortran-77 language.The momentum scaled distribution would illustrate that the simple Direct Knockout Model (DKM) behavior observed in the (γ,p) reaction could be regarded as evidence for the importance of the DKM process in the (γ,p) reaction. Clearly the application of the procedure given by Findlay and Owens leads to a more consistent momentum distributio

Micro Vascular and Macro Vascular Disease in Systemic Hypertension: The Role of Cardiac Imaging and Nitric Oxide Synthase Gene Polymorphism

Systemic Hypertension (HTN) accounts for the largest amount of attributable Cardiovascular (CV) mortality worldwide. There are several factors responsible for the development of HTN and its CV complications. Multicenter trials revealed that risk factors responsible for Micro Vascular Disease (MVD) are similar for those attributable to Coronary Artery Disease (CAD) which include tobacco use, unhealthy cholesterol levels, HTN, obesity and overweight, physical inactivity, unhealthy diet, diabetes, insulin resistance, increasing age and genetic predisposition. In addition, the defective release of Nitric Oxide (NO) could be a putative candidate for HTN and MVD. This study reviewed the risk stratification of hypertensive population employing cardiac imaging modalities which are of crucial importance in diagnosis. It further emphasized the proper used of cardiac imaging to determine patients at increased CV risk and identify the management strategy. It is now known that NO has an important eff ect on blood pressure, and the basal release of endothelial Nitric Oxide (eNOS) in HTN may be reduced. Although there are diff erent forms of eNOS gene allele, there is no solid data revealing the potential role of the polymorphism of the eNOS in patients with HTN and coronary vascular diseases. In the present article, the prevalence of eNOS G298 allele in hypertensive patients with micro vascular angina will be demonstrated. This review provides an update on appropriate and justified use of non-invasive imaging tests in hypertensive patients and its important role in proper diagnosis of MVD and CAD. Second, eNOS gene allele and its relation to essential hypertension and angina pectoris are also highlighted