منابع مشابه
Genesis revisited
December 2 of this year became a memorable day in human history when NASA held a press conference to declare an epoch-making finding. Felisa Wolfe-Simon, a NASA astrobiologist at the US Geological Survey, led a team investigating a bacterium that can sustain its growth by replacing phosphorus with arsenic, an element generally harmful to living organisms. Her report was published online in the ...
متن کاملThe genesis of a virtual world ? revisited
Constructing a v irtual world requires certain technical skills and the ability to make difficult decisions regarding how the world will look and feel. However, the most difficult aspect of building a virtual world has less to do with the building of the virtual spaces and more to do the conceptualisation of how teaching and learning will occur in this new type of environment. This paper examin...
متن کاملQUICKSELECT Revisited
We give an overview of the running time analysis of the random divide-and-conquer algorithm FIND or QUICKSELECT. The results concern moments, distribution of FIND’s running time, the limiting distribution, a stochastic bound and the key: a stochastic fixed point equation.
متن کاملPENDRED\'S SYNDROME REVISITED
Pendred's syndrome is defined as a triad of congenital perceptive hearing loss, goiter, and abnormal perchlorate test. Three brothers with Pendred's syndrome [P.S.] are reported. The oldest brother has hearing loss (he has been deaf and mute since childhood) and has a large goiter. A thyroid scan revealed euthyroid multinodular goiter and a perchlorate test was performed, and reported abno...
متن کاملUSHER\'S SYNDROME REVISITED
Usher's syndrome is a genetically inherited autosomal recessive disorder resulting in the double handicap of deafness and progressive blindness, known as retinitis pigmentosa. The disease is also associated with psychoses, mental retardation, and other major neurophysiological changes. It appears to be more common among Jewish individuals and consanguinous marriages. While it is rare in th...
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ژورنال
عنوان ژورنال: Journal of Periodontal & Implant Science
سال: 2010
ISSN: 2093-2278,2093-2286
DOI: 10.5051/jpis.2010.40.6.255