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Showing 13 to 24 of 403 entries
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Light echoes from ancient supernovae in the Large Magellanic Cloud.

Nature

Rest A, Suntzeff NB, Olsen K, Prieto JL, Smith RC, Welch DL, Becker A, Bergmann M, Clocchiatti A, Cook K, Garg A, Huber M, Miknaitis G, Minniti D, Nikolaev S, Stubbs C.
PMID: 16372003
Nature. 2005 Dec 22;438(7071):1132-4. doi: 10.1038/nature04365.

The light from historical supernovae could in principle still be visible as scattered-light echoes centuries after the explosion. The detection of light echoes could allow us to pinpoint the supernova event both in position and age and, most importantly,...

Mechanisms of H2 dissociative adsorption on the Pt(211) stepped surface.

The Journal of chemical physics

McCormack DA, Olsen RA, Baerends EJ.
PMID: 16161607
J Chem Phys. 2005 May 15;122(19):194708. doi: 10.1063/1.1900087.

We utilize classical trajectory calculations to study the reaction dynamics of the dissociative adsorption of H2 on the stepped Pt(211) surface. The potential-energy surface has been obtained through an accurate interpolation of density-functional theory data at the generalized gradient...

Modeling chlorite-iodide reaction dynamics using a chlorine dioxide-iodide reaction mechanism.

The journal of physical chemistry. A

Jowza M, Sattar S, Olsen RJ.
PMID: 16833519
J Phys Chem A. 2005 Mar 10;109(9):1873-8. doi: 10.1021/jp0457895.

The mechanism of Lengyel, Li, Kustin, and Epstein (J. Am. Chem. Soc. 1996, 118, 3708) for the oscillatory chlorine dioxide-iodide reaction accurately models the reaction in closed and open systems. We investigated whether this mechanism minus the single reaction...

Comparison of methods for finding saddle points without knowledge of the final states.

The Journal of chemical physics

Olsen RA, Kroes GJ, Henkelman G, Arnaldsson A, Jónsson H.
PMID: 15549851
J Chem Phys. 2004 Nov 22;121(20):9776-92. doi: 10.1063/1.1809574.

Within the harmonic approximation to transition state theory, the biggest challenge involved in finding the mechanism or rate of transitions is the location of the relevant saddle points on the multidimensional potential energy surface. The saddle point search is...

Development of pure culture biofilms of P. putida on solid supports.

Biotechnology and bioengineering

Shrove GS, Olsen RH, Vogel TM.
PMID: 18600638
Biotechnol Bioeng. 1991 Mar 15;37(6):512-8. doi: 10.1002/bit.260370604.

Pseudomonas putida biofilms were developed on and biofilm accumulation rate data were obtained for the following two classes of support materials: charged surfaces and noncharged hydrophobic and hydrophilic surfaces. The effects of surface roughness and porosity on the rate...

Cloud droplet deposition in subalpine balsam fir forests: hydrological and chemical inputs.

Science (New York, N.Y.)

Lovett GM, Reiners WA, Olson RK.
PMID: 17770164
Science. 1982 Dec 24;218(4579):1303-4. doi: 10.1126/science.218.4579.1303.

Subalpine forests of the northern Appalachians are subject to significant deposition of water and chemicals via cloud droplet impaction. This deposition has been estimated by a method linking micrometeorological measures of turbulent transfer, a detailed representation of canopy structure,...

Generating controllable atom-light entanglement with a Raman atom laser system.

Physical review letters

Haine SA, Olsen MK, Hope JJ.
PMID: 16711985
Phys Rev Lett. 2006 Apr 07;96(13):133601. doi: 10.1103/PhysRevLett.96.133601. Epub 2006 Apr 05.

We introduce a scheme for creating continuous variable entanglement between an atomic beam and an optical field, by using squeezed light to outcouple atoms from a Bose-Einstein condensate via a Raman transition. We model the full multimode dynamics of...

Distribution of thermophilic marine sulfate reducers in north sea oil field waters and oil reservoirs.

Applied and environmental microbiology

Nilsen RK, Beeder J, Thorstenson T, Torsvik T.
PMID: 16535321
Appl Environ Microbiol. 1996 May;62(5):1793-8. doi: 10.1128/aem.62.5.1793-1798.1996.

The distribution of thermophilic marine sulfate reducers in produced oil reservoir waters from the Gullfaks oil field in the Norwegian sector of the North Sea was investigated by using enrichment cultures and genus-specific fluorescent antibodies produced against the genera...

Penetration of Sulfate Reducers through a Porous North Sea Oil Reservoir.

Applied and environmental microbiology

Beeder J, Nilsen RK, Thorstenson T, Torsvik T.
PMID: 16535415
Appl Environ Microbiol. 1996 Sep;62(9):3551-3. doi: 10.1128/aem.62.9.3551-3553.1996.

The presence of mesophilic benzoate-degrading sulfate-reducing bacteria in the water systems of three Norwegian oil platforms was investigated. Strain 4502 was isolated from the injection water system, and specific antibodies were produced against this isolate. It was present in...

The identification of GABA receptor binding sites in insect ganglia.

Neurochemistry international

Lunt GG, Robinson TN, Miller T, Knowles WP, Olsen RW.
PMID: 20492983
Neurochem Int. 1985;7(5):751-4. doi: 10.1016/0197-0186(85)90028-2.

The binding of [(3)H]muscimol to membrane fractions from central nervous tissue from fly (Musca domestica) and locust (Schistocerca gregaria) was measured. Specific saturable binding was observed with K(d)s of 10 nM (locust) and 40 nM (fly) and B(max) values...

A note on the vibrational efficacy in molecule-surface reactions.

The Journal of chemical physics

Díaz C, Olsen RA.
PMID: 19275417
J Chem Phys. 2009 Mar 07;130(9):094706. doi: 10.1063/1.3080613.

The effectiveness of vibrational energy in promoting dissociation of molecules colliding with surfaces can be measured through the so-called vibrational efficacy. It is thought by many to be a pure "energetic" measure and therefore believed to be limited from...

Diffractive and reactive scattering of H2 from Ru(0001): experimental and theoretical study.

Physical chemistry chemical physics : PCCP

Nieto P, Farías D, Miranda R, Luppi M, Baerends EJ, Somers MF, van der Niet MJ, Olsen RA, Kroes GJ.
PMID: 21487588
Phys Chem Chem Phys. 2011 May 14;13(18):8583-97. doi: 10.1039/c0cp02425b. Epub 2011 Apr 12.

We present a combined experimental and theoretical study of the diffraction of H(2) from Ru(0001) in the incident energy range 78-150 meV, and a theoretical study of dissociative chemisorption of H(2) in the same system. Pronounced out-of-plane diffraction was...

Showing 13 to 24 of 403 entries