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Now showing items 11-20 of 44
Surface layer modification of ion bombarded HDPE
(
Elsevier
, 2004 , Article)
Press-moulded, high density polyethylene (HDPE) samples were subjected to ion bombardment and effects of the modification studied. He+ ions of energy 100 keV or Ar+ ions of energy 130 keV were applied in the range of dose ...
Language Learning Strategy Use by Arabic Speaking Students Learning English through Content areas
(
TESOL Arabia International Conference and Exhibition
, 2009 , Book chapter & Conference Proceedings)
The success of learning in any language is usually dependent upon the kinds of learning strategies adopted by the language learner. Research into language learning strategies has thus assumed great importance as more and ...
Temperature and electric field effects on the dielectric dispersion of modified polyvinyl chloride
(
Elsevier
, 2003 , Article)
The effect of electric field on the dielectric dispersion of modified polyvinyl chloride (PVC) has been investigated. The applied direct current (DC) field strength was ranging from 0 to 104 V cm−1. The complex permitivity ...
The effects of ion bombardment of ultra-high molecular weight polyethylene
(
Elsevier
, 2006 , Article)
Ion bombardment is a suitable tool to improve tribological properties of polymers. In this study UHMWPE samples were bombarded with 130keV He ions to the fluences ranging from 1×1014 to 2×1016cm−2. RBS and NRA techniques ...
Ion beam modification of surface properties of polyethylene
(
Elsevier
, 2003 , Conference Paper)
Improvement of polymer tribological properties is an essential issue for their application when used as parts of machines or artificial human joints. Ion implantation is a very promising technique in this respect. This ...
Large sample and bootstrap intervals for the gamma scale parameter based on grouped data
(
Wayne State University
, 2006 , Article)
Interval estimation of the scale parameter of the gamma distribution using grouped data is considered in this article. Exact intervals do not exist and approximate intervals are needed Recently, Chen and Mi (2001) proposed ...
On the Lp boundedness of rough parametric Marcinkiewicz functions
(
Victoria University
, 2007 , Article)
In this paper, we study the Lp boundedness of a class of parametric Marcinkiewicz integral operators with rough kernels in L(log + L)(Sn-1). Our result in this paper solves an open problem left by the authors of ([6]).
Volatile Components of the Phaeophyceae Hormophysa cuneiformis Growing Along Qatar Coasts
(
Qatar University
, 2007 , Article)
The present work deals with the study on volatile compounds from the brown alga Hormophysa cuneiformis collected from the Northwest coast of Qatar on May 2002. Two extraction methods have been used: conventional hydrodistillation ...
Mitochondrial phylogeography illuminates the origin of the extinct caspian tiger and its relationship to the amur tiger
(
Public Library of Science
, 2009 , Article)
The Caspian tiger (Panthera tigris virgata) flourished in Central Asian riverine forest systems in a range disjunct from that of other tigers, but was driven to extinction in 1970 prior to a modern molecular evaluation. ...
On the 'independence of trials-assumption' in geometric distribution
(
Taylor & Francis, Ltd
, 2008 , Article)
In this note, it is shown through an example that the assumption of the independence of Bernoulli trials in the geometric experiment may unexpectedly not be satisfied. The example can serve as a suitable and useful classroom ...