oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 60 )

2019 ( 731 )

2018 ( 824 )

2017 ( 762 )

Custom range...

Search Results: 1 - 10 of 462580 matches for " A. Din "
All listed articles are free for downloading (OA Articles)
Page 1 /462580
Display every page Item
Corticosteroids and ICU Course of Community Acquired Pneumonia in Egyptian Settings  [PDF]
Nirmeen A. Sabry, Emad El-Din Omar
Pharmacology & Pharmacy (PP) , 2011, DOI: 10.4236/pp.2011.22009
Abstract: Background: Pneumonia is the most common cause of community-acquired infection requiring ICU admission. 60-87% of patients with severe community acquired pneumonia (CAP) admitted to the ICU develops respiratory failure and require mechanical ventilation (MV). Objectives: To assess the efficacy and safety of adjunctive low dose hydrocortisone infusion treatment in Egyptian ICU patients with CAP. Methods: Hospitalized patients, clinically and radiologically diagnosed with CAP, were randomized to receive hydrocortisone 12.5 mg/h IV infusion for 7 days or placebo, along with antibiotics. The end-points of the study were improvement in PaO2:FIO2 (PaO2:FIO2 > 300 or ≥100 increase from study entry) and SOFA score by study day 8 and the development of delayed septic shock. Results: 80 patients were recruited, 40 of them received hydrocortisone and the remaining 40 received placebo. By study day 8, hydrocortisone treated patients showed a significant improvement in PaO2:FIO2 and chest radiograph score, and a significant reduction in C-reactive protein (CRP) levels, Sepsis-related Organ Failure Assessment (SOFA) score, and delayed septic shock compared to the control group. Hydrocortisone treatment was associated with a significant reduction in the duration of MV. However, hydrocortisone infusion did not show significant difference in the ICU mortality. Conclusions: adjunctive 7-day course of low dose hydrocortisone IV in patients with CAP hastens recovery of pneumonia and prevents the development of sepsis related complications with a significant reduction in duration of the mechanical ventilation.
The Relation between Assertiveness Levels, Locus of Control and Academic Success of Turkish Language Teacher Candidates  [PDF]
Sibel Din?yürek, Ahmet Güneyli, Mehmet ?a?lar
Sociology Mind (SM) , 2012, DOI: 10.4236/sm.2012.21008
Abstract: Before they start their career, candidate teachers must have deep knowledge about the characteristics that a successful teachers should have. The purpose is to create awareness that personal traits of a teacher are critical during education period and to improve and develop these traits. The research is a descriptive one and the basic purpose of this study is to examine the relation between the assertiveness levels and locus of control, on one hand, and academic success, on the other, of senior Turkish teaching students at Eastern Mediterranean University (n = 276). Validity and reliability studies were conducted in order to collect data and “Rathus Assertiveness Schedule” and “Rotter Locus of Control Scale” were used. Percentage- frequency calculations were conducted so as to evaluate the data, cross-reference tables were produced and correlation was examined. In this study, researchers didn’t find any correlation between the assertiveness and academic successes of candidate teachers. Likewise, there isn’t any relation between locus of control and academic success of candidate teachers.
Common Fixed Point Iterations of Generalized Asymptotically Quasi-Nonexpansive Mappings in Hyperbolic Spaces  [PDF]
H. Fukhar-ud-din, A. R. Khan
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.25021
Abstract:

We introduce a general iterative method for a finite family of generalized asymptotically quasi- nonexpansive mappings in a hyperbolic space and study its strong convergence. The new iterative method includes multi-step iterative method of Khan et al. [1] as a special case. Our results are new in hyperbolic spaces and generalize many known results in Banach spaces and CAT(0) spaces, simultaneously.

Identification of various Biomphalaria alexandrina strains collected from five Egyptian governorates using RAPD and species-specific PCR techniques  [PDF]
A. M. Mohamed, A. T. Sharaf El-Din, A. H. Mohamed, M. R. Habib
American Journal of Molecular Biology (AJMB) , 2011, DOI: 10.4236/ajmb.2011.11003
Abstract: The first generation of Biomphalaria snails collected from five Egyptian governorates (Giza, Fayoum, Kafr El-Sheikh, Ismailia and Damietta) were sub-jected to species-specific PCR assays and the results showed that snails collected from the field were B. alexandrina, and there was no evidence for the pres-ence of B. glabrata. The snails were subjected also to RAPD- PCR technique. The results showed that dif-ferent fingerprints with each B. alexandrina strain were produced with varying numbers of bands rang-ing in size from 123.6 to 796.6 bp depending on the snail strain and the primer used. Many specific bands were obtained with the four primers in each strain. Primer OPA-1 amplified the highest number of spe-cific bands (26 bands) and gave the highest poly-morphism among the primers used (100% polymor-phism). The estimated similarity coefficients among B. alexandrina strains based on the RAPD-PCR pro-files ranged from 0.56 to 0.72. The highest similarity coefficient (0.72) was recorded between the strains of Ismailia and Kafr El-Sheikh, while the lowest coeffi-cient (0.56) was reported between the strains of SPSC and Ismailia.
Dermatomal Somatosensory Evoked Potentials: An Indicator of Improvement of Breast Sensibility after Reduction Mammaplasty  [PDF]
Mohammad Abu-Hegazy, Wael Gabr, Hossam El-Din A. Ismail, Ahmad A. Khalil
Neuroscience & Medicine (NM) , 2016, DOI: 10.4236/nm.2016.73012
Abstract: Introduction: Many women think about reduction mammaplasty for different reasons. The effect of surgery on the beast sensibility is one of the greatest concerns after reconstructive reductive breast surgery through its affect on patient’s social life and psychological health. The dermatomal somatosensory evoked potential (D-SEP) is a new method to quantitatively evaluate breast sensibility. Patients and Methods: Twenty-five women enrolled in this study presenting with breast enlargement, underwent mammary reduction by using the inferior pyramidal breast reduction technique using the same operative technique described by Robbins with some modifications. All D-SEP amplitudes and latencies were calculated preoperatively and then were reassessed six and twelve months post-surgery in each breast. Result: The results revealed that there is a significant difference in the D-SEP latency pre- and post-operatively. The statistically significant decrease in latency and the breast size demonstrated indicates that the sensibility improved after breast reduction surgery both at six and twelve months. There is also a significant increase in the D-SEP amplitude pre- and post-operatively. The negative and statistically significant increase in amplitude with the decrease in breast size demonstrated indicates that the sensibility improved after breast reduction surgery both at six and twelve months. Conclusion: This study concluded that breast sensibility will improve after breast reduction as indicated by significant reduction of D-SEP latencies and increase of its amplitudes. Our results confirm an inverse relationship between breast size and sensibility, with improvement in sensibility after breast reduction.
Air Quality Indices, Sources and Impact on Human Health of PM10 and PM2.5 in Alexandria Governorate, Egypt  [PDF]
Ashraf A. Zahran, M. Ismail Ibrahim, Alaa El-Din Ramadan, M. M. Ibrahim
Journal of Environmental Protection (JEP) , 2018, DOI: 10.4236/jep.2018.912078
Abstract: In this study, PM10 and PM2.5 were measured in seven sites representing different activities (the same sites of EEAA monitoring stations) in addition to eighth site that used as a background. All results were higher than AQLs of EEAA, US/EPA, and EC although PM10 and PM2.5 are considered to be a direct cause of cardiovascular diseases as well as lead to death and it may be a reason for a number of chest diseases in short-term as well as long-term. Results were compared to the Air Quality Forecast system which developed by EEAA and AQI which created by US/EPA was calculated for some PM10 and PM2.5. Probable potential anthropogenic sources for such high concentrations of PM included unpaved roads, indiscriminate demolition and construction work, industrial activities, and solid wastes. This study resulted in a number of suggestions and recommendations include: 1) Implementation of integrated ISO 26000 and ISO 14001, 2) EIMP/EEAA monitoring stations need restructuring plan to cover all areas in Alexandria, 3) EIMP/EEAA must be supported with PM2.5 monitors, 4) PM control systems must be used in all industrial activities to reduce PM pollution from the source, 5) AQL of PM2.5 in the ambient environment must be reduced and it must be included in the working environment parameters, 6) Environmental law must be applied strictly, and 7) Multidisciplinary co-operation especially between environment and public health specialists must be increased.
Numerical simulation of tropospheric injection of biomass burning products by pyro-thermal plumes
C. Rio, F. Hourdin,A. Chédin
Atmospheric Chemistry and Physics (ACP) & Discussions (ACPD) , 2010,
Abstract: The thermal plume model, a mass-flux scheme originally developed to represent the vertical transport by convective structures within the boundary layer, is adapted to the representation of plumes generated by fires, with the aim of estimating the height at which fire emissions are actually injected in the atmosphere. The parameterization, which takes into account the excess of near surface temperature induced by fires and the mixing between convective plumes and environmental air, is first evaluated on two well-documented fires. Simulations over Southern Africa performed with the general circulation model LMDZ over one month show that the CO2 can be injected far above the boundary layer height, leading to a daily excess of CO2 in the mid-troposphere of an order of 2 ppmv. These results agree with satellite retrievals of a diurnal cycle of CO2 in the free troposphere over regions affected by biomass burning in the Tropics.
Numerical simulation of tropospheric injection of biomass burning products by pyro-thermal plumes
C. Rio,F. Hourdin,A. Chédin
Atmospheric Chemistry and Physics Discussions , 2009,
Abstract: The thermal plume model, a mass-flux scheme originally developed to represent the vertical transport by convective structures within the boundary layer, is adapted to the representation of plumes generated by fires, with the aim of estimating the height at which fire emissions are actually injected in the atmosphere. The parameterization, which takes into account fire characteristics, the induced excess of near surface temperature and mixing with environmental air, is first evaluated on two well-documented fires. Simulations over Southern Africa performed with the general circulation model LMDZ over one month show that the CO2 can be injected far above the boundary layer height, leading to a daily excess of CO2 in the mid-troposphere of an order of 2 ppmv. These results agree with satellite retrievals of a diurnal cycle of CO2 in the free troposphere over regions affected by biomass burning in the Tropics.
Age of stratospheric air in the ERA-Interim
M. Diallo,B. Legras,A. Chédin
Atmospheric Chemistry and Physics (ACP) & Discussions (ACPD) , 2012, DOI: 10.5194/acp-12-12133-2012
Abstract: The Brewer-Dobson mean circulation and its variability are investigated in the ERA-Interim over the period 1989-2010 by using an off-line Lagrangian transport model driven by analysed winds and heating rates. At low and mid-latitudes, the mean age of air in the lower stratosphere is in good agreement with ages derived from aircraft, high altitude balloon and satellite observations of long-lived tracers. At high latitude and in the upper stratosphere, we find, however that the ERA-Interim ages exhibit an old bias, typically of one to two years. The age spectrum exhibits a long tail except in the low tropical stratosphere which is modulated by the annual cycle of the tropical upwelling. The distribution of ages and its variability is consistent with the existence of two separate branches, shallow and deep, of the Brewer-Dobson circulation. Both branches are modulated by the tropical upwelling and the shallow branch is also modulated by the subtropical barrier. The variability of the mean age is analysed through a decomposition in terms of annual cycle, QBO, ENSO and trend. The annual modulation is the dominating signal in the lower stratosphere and is maximum at latitudes greater than 50° in both hemispheres with oldest ages at the end of the winter. The phase of the annual modulation is also reversed between below and above 25 km. The maximum amplitude of the QBO modulation is of about 0.5 yr and is mostly concentrated within the tropics between 25 and 35 km. It lags the QBO wind at 30 unit{hPa} by about 8 months. The ENSO signal is small and limited to the lower northen stratosphere. The age trend over the 1989–2010 period, according to this ERA-Interim dataset, is significant and negative, of the order of 0.3 to 0.5 yr dec 1, within the lower stratosphere in the Southern Hemisphere and south of 40° N in the Northern Hemisphere below 25 km. The age trend is positive (of the order of 0.3 yr dec 1) in the mid stratosphere but there is no region of consistent significance. This suggests that the shallow and deep Brewer-Dobson circulations may evolve in opposite directions. Finally, we find that the long lasting influence of the Pinatubo eruption can be seen on the age of air from June 1991 until the end of 1993 and can bias the statistics encompassing this period.
In Silico Docking Analysis of Rat γ-Crystallin Surfaces
Alaa El-Din A. Gawad
Journal of Computations & Modelling , 2012,
Abstract: In silico methods are useful for predicting 3D structure of binding sites when experimental information is lack. The complex interaction between γ-crystallins and small ligands is a key element in understanding the lens transparency. In spite of the high sequence similarity of γ-crystallins, different numbers of pockets were automatically identified on their molecular surfaces. γC-crystallin has the largest binding pocket among rat γ-crystallin individuals. The binding affinities of five putative chemical ligands against the active sites of γ-crystallin proteins were determined by Autodock 4.2. Molecular docking indicated multiple binding modes of such ligands into γ-crystallins pockets.
Page 1 /462580
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.