Nanofluids (i.e. nanoparticles dispersed in a fluid) have tremendous potential in a broad range of applications, including pharmacy, medicine, water treatment, soil decontamination, or oil recovery and CO2 geo-sequestration. In these applications nanofluid stability plays a key role, and typically robust stability is required. However, the fluids in these applications are saline, and no stability data is available for such salt-containing fluids. We thus measured and quantified nanofluid stability for a wide range of nanofluid formulations, as a function of salinity, nanoparticle content and various additives, and we investigated how this stability can be improved. Zeta sizer and dynamic light scattering (DLS) principles were used to invest

<p>The speech act of request is face-threatening by nature and an inappropriate request can cause offence to the hearer, particularly when s/he has higher authority (Economidou-Kogetsidis, 2011). E-mail is frequently used to facilitate communication between student and professor in Iraq. Iraqi EFL (English as a foreign language) learners face pragmatic difficulty in making proper requests to individuals of higher authority via e-mail. Some studies have been conducted on Arab EFL learners to uncover the pragmatic behaviour of these learners in real-life requests using elicited data. This research fills a gap in Inter-language Pragmatics (ILP) literature in that it investigates the use of academic request in three diverse imposi

إن تجسيد الشعراء للجمال واقامته تمثالا مصورا مرئيا ، كان الهدف منه اولا اشاعة جو نفسي مريح في مقدمات قصائد المديح ، فهو الجزء البصري الممتع لمدركات حسية اخرى ترافقه، وأما المرامي  الاخرى 

ﻓﮭﻲ إﻣﺘﺎع اﻟﻨﻔﺲ إﻣﺎ ﺑﺎﺳﺘﺮﺟﺎع أﺟﻤﻞ ﺻﻮرة أو أﻧﻤﻮذج ﻗﺎﺋﻢ ﻓﻲ اﻟﺬاﻛﺮة، وﺟﻌﻠﮫ ﯾﺤﯿﺎ ﻣﻦ ﺟﺪﯾﺪ ﻟﺪواﻋﻲ اﻟﺤﻨﯿﻦ للاماكن والازمنة الاثيرة . أو الميل للتعبير عن الوعي الجمالي الذي يتصل بموضوع الج

Background: Bone cutter is widely used in the
Middle east area to cut the prepuce during circumcision.

Results :One hundred twenty one male neonates
were included in this study.The mean operative
time (MOT) was 6 minutes, mean time of
healing (MTH) was 5 days, 7 cases (5.9%)
developed early & late complications, 2 (1.7%)
had bleeding, 3 (2.5%) developed infection, 2
(1.7%) developed late complications in the form
of meatal stenosis.
Settings:Al-Yarmouk Teaching Hospital and a
private surgical clinic.
Aim of the study: To assess the safety of
circumcision using bone cutter.
Methods: Over 6 years period from Jan. 2000
till Dec. 2005, one hundred twenty one male
neonates were circumci

Obesity is an increasing health problem in developing countries and has grown into a major global epidemic. Recent studies suggest that colonization of the stomach with Helicobacter pylori (H. pylori) may affect gastric expression of appetite and satiety-related hormones, finding that patients cured of H. pylori infection have gained weight. Further exploration of the relationship between obesity and H. pylori infection is therefore warranted. The objective of this study was to determine the prevalence of H. pylori infection in a sample of obese patients. A total of 69 obese females and 55 normal-weight females as a control group were included. Body mass indices (BMI) of all females were measured and tests for H. pylori performed. Subjects

Most real-life situations need some sort of approximation to fit mathematical models. The beauty of using topology in approximation is achieved via obtaining approximation for qualitative subgraphs without coding or using assumption. The aim of this paper is to apply near concepts in the -closure approximation spaces. The basic notions of near approximations are introduced and sufficiently illustrated. Near approximations are considered as mathematical tools to modify the approximations of graphs. Moreover, proved results, examples, and counterexamples are provided.

Background: Day case surgery has become widely accepted as a safe alternative to the inpatient care in up to 70% of the cases at a children’s hospital. It has the advantage of minimizing the psychological trauma of hospitalization, decreasing nosocomial infection, less costly and frees up hospital beds.Objectives: To assess the advantages and disadvantages of this type of surgery.Methods: this is a prospective study, in which two hundred thirty childhood tonsillectomies were performed as a day-case in the department of otolaryngology at Al Shaheed Gazi hospital, Medical City Complex during the period from October 2009 to September 2010. The patients age range from 3-12 years (Mean 7.2 years).Results: 46.08% males and 53.91% females wer