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Showing 13 to 24 of 258 entries
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Forward scattering from the sea surface and the van Cittert-Zernike theorem.

The Journal of the Acoustical Society of America

Dahl PH.
PMID: 15000171
J Acoust Soc Am. 2004 Feb;115(2):589-99. doi: 10.1121/1.1635417.

The van Cittert-Zernike theorem is used to generate models for the spatial coherence of a sound field that has been forward scattered from the sea surface. The theorem relates the spatial coherence of an observed wave field to the...

Ocean dynamics and acoustic fluctuations in the fram strait marginal ice zone.

Science (New York, N.Y.)

Dyer I, Baggeroer AB, Mikhalevsky PN, Dahl PH.
PMID: 17817129
Science. 1987 Apr 24;236(4800):435-6. doi: 10.1126/science.236.4800.435.

Acoustic waves transmitted over a 100-kilometer path in the Fram Strait marginal ice zone undergo Doppler shifts and fluctuations around these shifts, the former due to quasi-steady motion of both acoustic source and receiver and the latter to unsteady...

Time-lapse STM studies of diastereomeric cinchona alkaloids on platinum metals.

The journal of physical chemistry. B

Wahl M, von Arx M, Jung TA, Baiker A.
PMID: 17064139
J Phys Chem B. 2006 Nov 02;110(43):21777-82. doi: 10.1021/jp0628941.

The adsorption of cinchonidine (CD) and cinchonine (CN) on Pt(111) and Pd(111) single crystals has been investigated by means of scanning tunneling microscopy (STM) in an ultrahigh vacuum system. In time-lapse series the mobilities of different adsorption species have...

Fluorescence lifetime correlation spectroscopy.

Journal of fluorescence

Kapusta P, Wahl M, Benda A, Hof M, Enderlein J.
PMID: 17171439
J Fluoresc. 2007 Jan;17(1):43-8. doi: 10.1007/s10895-006-0145-1. Epub 2006 Dec 14.

This article explains the basic principles of FLCS, a genuine fusion of Time-Correlated Single Photon Counting (TCSPC) and Fluorescence Correlation Spectroscopy (FCS), using common terms and minimum mathematics. The usefulness of the method is demonstrated on simple FCS experiments....

Haematological disorders and lung alveolar macrophage function following total parenteral nutrition in rats.

Clinical nutrition (Edinburgh, Scotland)

Dahl PE, Osterud B, Kjæve JC.
PMID: 16840008
Clin Nutr. 1992 Oct;11(5):269-76. doi: 10.1016/0261-5614(92)90003-9.

Alterations in haematological parameters have been reported both clinically and experimentally following administration of total parenteral nutrition (TPN). Fat emulsions also affect function of the mononuclear phagocytic system. We have examined haematological parameters and pulmonary alveolar macrophages in rats...

Analysis of fluorescence anisotropy decays by a least square method.

Biophysical chemistry

Wahl P.
PMID: 16997211
Biophys Chem. 1979 Jul;10(1):91-104. doi: 10.1016/0301-4622(79)80009-5.

A method of fluorescence anisotropy decay analysis is described in this work. The transient anisotropy r(ex)(t) measured in a photocounting pulsefluorimeter is fitted by a non linear least square procedure to the ratio of convolutions of the apparatus response...

Vector-entropy optimization-based neural-network approach to image reconstruction from projections.

IEEE transactions on neural networks

Wang Y, Wahl FM.
PMID: 18255703
IEEE Trans Neural Netw. 1997;8(5):1008-14. doi: 10.1109/72.623202.

In this paper we propose a multiobjective decision making based neural-network model and algorithm for image reconstruction from projections. This model combines the Hopfield's model and multiobjective decision making approach. We develop a weighted sum optimization based neural-network algorithm....

Coating of LaCoO3 thin film with sol-gel dip coating method.

Journal of nanoscience and nanotechnology

Okuyucu H, Dahl PI, Einarsrud MA.
PMID: 18464392
J Nanosci Nanotechnol. 2008 Feb;8(2):685-8. doi: 10.1166/jnn.2008.a052.

LaCoO3 thin film was coated on Al2O3 single crystal by sol-gel route. Appropriate composition of precursors, chelating agents and the solvent put together into a flask and magnetically stirred on a magnetic stirrer. After having the red transparent solution,...

The division of labor: genotypic versus phenotypic specialization.

The American naturalist

Wahl LM.
PMID: 18707504
Am Nat. 2002 Jul;160(1):135-45. doi: 10.1086/340601.

A model of the division of labor in simple evolving systems is explored to compare two strategies evident in natural populations: phenotypic specialization (such as differentiation by regulated gene expression) and genotypic specialization (such as co-infection by complementary covirus...

Differential influence of levodopa on reward-based learning in Parkinson's disease.

Frontiers in human neuroscience

Graef S, Biele G, Krugel LK, Marzinzik F, Wahl M, Wotka J, Klostermann F, Heekeren HR.
PMID: 21048900
Front Hum Neurosci. 2010 Oct 14;4:169. doi: 10.3389/fnhum.2010.00169. eCollection 2010.

The mesocorticolimbic dopamine (DA) system linking the dopaminergic midbrain to the prefrontal cortex and subcortical striatum has been shown to be sensitive to reinforcement in animals and humans. Within this system, coexistent segregated striato-frontal circuits have been linked to...

Observations and modeling of angular compression and vertical spatial coherence in sea surface forward scattering.

The Journal of the Acoustical Society of America

Dahl PH.
PMID: 20058954
J Acoust Soc Am. 2010 Jan;127(1):96-103. doi: 10.1121/1.3268594.

Measurements and modeling of spatial coherence and related angular spreading associated with forward scattering from the sea surface are presented. The measurements were taken in waters 80 m deep off the New Jersey coast in August 2006. Acoustic signals...

DISPOSAL OF MANURE.

American journal of public health (New York, N.Y. : 1912)

Hall PM.
PMID: 18008976
Am J Public Health (N Y). 1914 Jan;4(1):38-42. doi: 10.2105/ajph.4.1.38.

No abstract available.

Showing 13 to 24 of 258 entries