oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Search Results: 1 - 6 of 6 matches for " Entisar Alkatheeri "
All listed articles are free for downloading (OA Articles)
Page 1 /6
Display every page Item
Pollution Scenarios through Atmospheric Dispersion Modelling Based on Real Measurements of Selected Urban Areas in Abu Dhabi, UAE  [PDF]
Entisar Alkatheeri, Fadi Al Jallad, Muthanna Al Omar
Atmospheric and Climate Sciences (ACS) , 2012, DOI: 10.4236/acs.2012.23033
Abstract: Power requirements in the city of Al Mirfa in western Abu Dhabi are covered by the Al Mirfa Power and Distillation Plant. Comprehensive emission inventories for 2007-2008 were used to execute an ENVIMAN (OPSIS AB Company, Sweden) Gaussian dispersion model to predict ambient ground level concentrations of nitrogen oxides (NOx), carbon monoxide (CO), particulate matter (PM10) and sulfur dioxide (SO2) at selected receptors considering all emission sources located in the area. Two years of meteorological data was used in conjunction with the dispersion model to compute NOx and SO2 levels in and around the power plant. To validate the model, computed results were compared with the average values measured at a fixed Air Quality Station in Al Mirfa city. The highest hourly, daily and annual ground level concentrations under exiting meteorological conditions were then analyzed. The computed results for the study area revealed that daily, hourly and annual concentration values did not exceed the Federal Environment Agency (FEA) standard, and the contribution of plant emissions to the ground levels pollutants in the surrounded area range from 3.1 to 109 μg/m3 for NO2, and 1.1 to 41.4 μg/m3 for CO. This study can be considered a baseline study for any future expansion in the plant. Based on these results, mitigation strategies are not required.
Literature Review on the Use of First Language During Second Language Writing
Entisar Elsherif
Humanising Language Teaching , 2012, DOI: 17559715
Abstract:
Assessment of Gaseous and Particulate Pollutants in the Ambient Air in Al Mirfa City, United Arab Emirates  [PDF]
Entisar Al Katheeri, Fadi Al Jallad, Muthanna Al Omar
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.37077
Abstract: From 2007-2009, National Energy and Water Research Center (NEWRC) on behalf of Abu Dhabi Water and Electricity Authority (ADWEA) conducted a long term baseline study of nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), ozone (O3) and particulate matter <10 μm in diameter (PM10) using ambient air quality station located in the vicinity of Al Mirfa power plant in Abu Dhabi, United Arab Emirates (UAE).The objective of this study was to establish baseline levels and study the behavior of airborne pollutants from natural as well as anthropogenic origins with temporal variations. The study reveals that the average hourly values for NO2, SO2, and 8 hour average of CO were within the acceptable levels of 400, 300 and 30,000 μg/m3 respectively, whereas the levels of O3 as 8 hour average (<200 μg/Nm3) and PM10 (<150 μg/Nm3) occasionally exceeded the FEA permissible limits during the study period. Seasonal variation based on three years data reveals that the highest concentration of NO2 and SO2 were during winter and for CO and O3 during summer months. Results indicate that the levels of SO2 and CO were significantly controlled and improved while the fuel combustion of Al Mirfa power plant had increased from 2007 to 2009. Dust has significantly impact on the air quality by elevated levels of PM10 exceed in several instances associated with regional sand- storm during the monitoring period.
Anti-Obesity and Antihyperglycemic Effects of Crataegus aronia Extracts: In Vitro and in Vivo Evaluations  [PDF]
Entisar K. Al-Hallaq, Violet Kasabri, Shtaywy S. Abdalla, Yasser K. Bustanji, Fatma U. Afifi
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.49126
Abstract:

Hypocholesterolemic activity of Crataegus aronia L. (Rosaceae) is therapeutically praised. Its potent antiobesity (P < 0.001, n = 6 - 8) as well as marked triacylglycerol-reducing efficacies (P < 0.001, n = 6 - 8) in 10 weeks-high cholesterol diet (HCD) fed rats are demonstrated. Pancreatic triacylglycerol lipase (PL), α-amylase and α-glucosidase are an interesting pharmacological target for the management of dyslipidemia, atherosclerosis, diabetes and obesity. Comparable to acarbose, acute starch induced postprandial hyperglycaemia as well glycemic excursions in normoglycemic overnight fasting rats was highly significantly (P < 0.001) dampened by C. aronia 100, 200 and 400 mg/Kg b.wt aqueous extracts (AE), but not acute glucose evoked postprandial hyperglycaemia increments, unlike diabetes pharmaco-therapeutics metformin and glipizide. C. aronia aerial parts as well as fruits AEs (0.1 - 10 mg/mL) were identified as in vitro dual inhibitors of α-amylase and α-glucosidase with respective IC50 (mg/mL) of 2.1 ± 0.3 and 3.5 ± 0.7. Still, it lacked on in vitro hindrance of glucose movement, dissimilar to guar gum. Equivalent to orlistat (PL IC50 of 0.1 ± 0.0 μg/mL), C. aronia tested AEs and its purified bioactive phytoconstituents; quercetin and rutin, inhibited highly substantially in a dose dependent trend PL in vitro (n = 3), in an ascending order of obtained PL-IC50 (μg/mL): quercetin; 30.1 ± 2.8, rutin; 77.3 ± 11.7, C. aronia aerial parts; 225.2 ± 33.4 and C. aronia fruits; 286.1 ± 37.4. Flavonoid-rich C. aronia, as a functional food and a nutraceutical, modulating gastrointestinal carbohydrate and lipid digestion and absorption, maybe be advocated as an exquisite and potential candidate for combinatorial obesity-diabetes prevention and phytotherapy.

Differential Subordination with Generalized Derivative Operator of Analytic Functions
Entisar El-Yagubi,Maslina Darus
Chinese Journal of Mathematics , 2014, DOI: 10.1155/2014/656258
Abstract: Motivated by generalized derivative operator defined by the authors (El-Yagubi and Darus, 2013) and the technique of differential subordination, several interesting properties of the operator are given. 1. Introduction Let denote the class of functions of the form which are analytic in the open unit disk . Also let be the the subclass of consisting of all functions which are univalent in . We denote by and the familiar subclasses of consisting of functions which are, respectively, starlike of order and convex of order in :. Let be the class of holomorphic function in unit disk . For and we let Let two functions given by and be analytic in . Then the Hadamard product (or convolution) of the two functions , is defined by Recall that the function is subordinate to if there exists the Schwarz function , analytic in , with and such that , . We denote this subordination by . If is univalent in , then the subordination is equivalent to and . Let and be univalent in . If is analytic in and satisfies the (second order) differential subordination then is called a solution of the differential subordination. The univalent function is called a dominant of the solutions of the differential subordination, or more simply a dominant, if for all satisfying (5). A dominant that satisfies for all dominants of (5) is said to be the best dominant of (5) (note that the best dominant is unique up to a rotation of ). In order to prove the original results we need the following lemmas. Lemma 1 (see [1]). Let be a convex function with and let be a complex number with . If and then where The function is convex and is the best dominant. Lemma 2 (see [2]). Let be a convex function in and let where and is a positive integer. If is analytic in and then and this result is sharp. Lemma 3 (see [3]). Let ; if then belongs to the class of convex functions. We now state the following generalized derivative operator [4]: where , for , and is the Pochhammer symbol defined by Here can also be written in terms of convolution as To prove our results, we need the following inclusion relation: where is analytic function given by . 2. Main Results In the present paper, we will use the method of differential subordination to derive certain properties of generalised derivative operator . Note that differential subordination has been studied by various authors, and here we follow similar works done by Oros [5] and G. Oros and G. I. Oros [6]. Definition 4. For , and , let denote the class of functions which satisfy the condition Also, let denote the class of functions which satisfy the condition Remark
Seroepidemiology of hepatitis A virus in Kuwait
Jameela Alkhalidi,Bader Alenezi,Seham Al-mufti,Entisar Hussain
World Journal of Gastroenterology , 2009,
Abstract: AIM: To find the current seroepidemiology of hepatitis A virus (HAV) in Kuwait.METHODS: A total of 2851 Kuwaitis applying for new jobs were screened.RESULTS: HAV-positive cases were 28.8%; 59% were males and 41% were females. The highest prevalence was in the Ahmadi area. High prevalence was among the group of non-educated rather than educated parents. This is the first study in Kuwait demonstrating the shifting epidemiology of HAV.CONCLUSION: This study reflects the need of the Kuwaiti population for an HAV vaccine.
Page 1 /6
Display every page Item


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