نتایج جستجو برای: kelex 100

تعداد نتایج: 415231  

1996
Matthias Scheffler

Ab initio molecular dynamics calculations of deuterium desorbing from Si(100) have been performed in order to monitor the energy redistribution among the hydrogen and silicon degrees of freedom during the desorption process. The calculations show that part of the potential energy at the transition state to desorption is transferred to the silicon lattice. The deuterium molecules leave the surfa...

2013
Howard Kehrl

Q: How long w i l l i t be before this rou nd o f dow nsiz ing is completed? A: What you arc seeing now is the be g inn ing 'o f the second wave o f downsizing, w h ich really was formalized by the revo lt in Iran. We already had started on the downsiz­ ing. The j cars had already been en­ gineered. We increased the capacity o f those cars — we changed all the plans at that point. W e'll start ...

2015
Xia Wang Sophie Astrof

The chemical and mechanical properties of extracellular matrices (ECMs) modulate diverse aspects of cellular fates; however, how regional heterogeneity in ECM composition regulates developmental programs is not well understood. We discovered that fibronectin 1 (Fn1) is expressed in strikingly non-uniform patterns during mouse development, suggesting that regionalized synthesis of the ECM plays ...

2003
Douglas Kirby Meg Korpi Richard P. Barth Helen H. Cagampang

Family Planning Perspectives riculum of its kind. It is brief and takes up little class time and, given its focus on postponing sex, has broad appeal to parents and schools. Moreover, an Atlanta-based evaluation of the PSI program implemented in combination with a five-session human sexuality course suggested that the curriculum delayed the initiation of first intercourse.2 However, serious que...

2015
Frank Wilczek

Here I indulge in wide-ranging speculations on the shape of physics, and technology closely related to physics, over the next one hundred years. Themes include the many faces of unification, the re-imagining of quantum theory, and new forms of engineering on small, intermediate, and large scales. When Leon Cooper, on behalf of Brown University, asked me to contribute to their 250th anniversary ...

Journal: :JASIST 2015
Lutz Bornmann

Recently, Van Noorden, Maher, and Nuzzo (2014) published a list of papers which are among the 100 most highly cited papers of all time. This letter argues that such a list should not be produced on the base of bare citation counts, but normalized bibliometric indicators – the standard in bibliometrics.

1998
Yasser Hassan Said M Easa Speed

95 THE CANADIAN HIGHWAY NETwork consists mainly of two-lane highways where passing slower cars requires traveling in the lane assigned to the opposite traffic. Therefore, studying the mechanism of the passing maneuver is important for maintaining traffic safety, as well enhancing the highway’s level of service. Models for passing maneuvers are available in the design guides1,2 while different v...

2005
P. L. Lim J. A. Holtzman V. V. Smith K. Cunha

Accurate parallaxes from the Hipparcos catalog have enabled detailed studies of stellar properties. Subgiants are of particular interest because they lie in an area where isochrones are well separated, enabling dependable age determination. We have initiated a project to obtain hires spectra of Hipparcos subgiants in a volume-limited sample within 100 pc. We obtain stellar properties and abunda...

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