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1876 - 1900 of 10,910
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CreatorTitleDescriptionSubjectDate
1876Morse, Michael DavidDispersed fluorsecence spectroscopy of AINi, NiAu, and PtCuDispersed fluorescence studies of AlNi, NiAu, and PtCu have been performed, providing spectroscopic information about the ground and low-lying excited electronic states. Vibrational frequencies are reported for the ground X 2?5/2 state of all three molecules. In the case of AlNi, fluorescence to all...2003
1877Morse, Michael DavidDispersed fluorsecence spectroscopy of jet-cooled AgAu and Pt?Dispersed fluorescence spectroscopy has been used to study jet-cooled AgAu and Pt2 . Fluorescence resulting from the excitation of five bands of the A?X 1?+ system of AgAu was dispersed, and 51 measured ground state vibrational levels were fit to provide ground state vibrational constants of ?"e=198...2001
1878Miller, Jan D.Dispersed oil impact on froth stability in flotationFoam stability in flotation has been studied for more than half of the last century, however, the mechanisms responsible for the defoaming action of many presently used reagents are not completely understood. This research presents oil flotation data, which may be used in the evaluation of aqueous ...froth control; foam control; oil flotation; polyoxyethylene 10 lauryl ether (C12E 10); isobutylcarbinol (MIBC)2001
1879Christensen, Douglas A.Dispersion effects in fiber optic interferometryAn extended analysis of the effects of uncompensated fiber dispersion on the fringe visibility of a fiber optic interferometer is developed, with particular emphasis on stellar interferometry. Both material and waveguide dispersion for single-mode, polarization-preserving fibers are considered. It...Stellar interferometry; Fiber optics; Statistical optics1997
1880Vardeny, Zeev Valentine; Ehrenfreund, Eitan A.Dispersion of resonant Raman scattering in ∏-conjugated polymers: role of the even parity excitonsResonant Raman scattering dispersion of the most strongly coupled phonon frequencies with the excitation laser photon energy is measured in terms of a dispersion rate parameter D and quantified in a variety of p conjugated polymer films. D was found to be large in nonluminescent polymers and small i...Resonant raman scattering; Even parity excitons1997-09
1881Evans, DavidDisplay of complex three dimensional finite element modelsComplex three dimensional models can be displayed after an automatic generation of a finite element (panel) mapping. although this automatic generation algorithm fails at certain levels of model complexity, the elimination of these failures can be accomplished through user interaction. This report p...Three dimensional models; Finite element models1978
1882Coley, Phyllis D.Disponibilidad de recursos y defensas de las plantas frente al herbivorismoEl grado de herbivorismo y la eficacia de las defensas muestran amplias variaciones en las especies de plantas. La disponibilidad de recursos en el ambiente se propone como el mayor determinante de la cantidad y tipo de defensas de las plantas. Cuando los recursos son limitados, las plantas de cre...Defensas; Plantas; Herbivorismo2007
1883Capecchi, Mario R.; Mansour, Suzanne L.; Thomas, Kirk R.Disruption of the proto-oncogene int-2 in mouse embryo-derived stem cells: a general strategy for targeting mutations to non-selectable genes.Gene targeting--homologous recombination of DNA sequences residing in the chromosome with newly introduced DNA sequences--in mouse embryo-derived stem cells promises to provide a means to generate mice of any desired genotype. We describe a positive nd negative selection procedure that enriches 2,00...Animals; Clone Cells; Restriction Mapping; Stem Cells1988-11-24
1884Armentrout, Peter B.Dissociative charge transfer reactions of Ar+, Ne+, and He+ with CF4 from thermal to 50 eVGuided ion-beam techniques are used to measure the cross sections for reaction of CF4 with Ar+, Ne+, and H e + from thermal to 50 eV. Dissociative charge transfer followed by successive loss of F atoms are the major processes observed. Only CFx+ (x = 1,2,3) products are observed in the reactions of ...Ion-molecule reactions; Transfer reactions; Carbon tetrafluoride; Rare gas ions; Exothermic reactions; Endothermic reactions; Plasma systems1990
1885Couldwell, William T.Distal ventriculoperitoneal shunt failure secondary to Clostridium Difficile ColitisDistal ventriculoperitoneal shunt obstruction is typically associated with cerebrospinal fluid (CSF) infection, fluid pseudocysts, bowel obstruction, bowel perforation, or improper shunt placement in the abdomen. We describe a unique etiology for distal shunt obstruction secondary to Clostridium dif...Shunt Failure2005-03
1886Couldwell, William T.; Gottfried, Oren N.Distal ventriculoperitoneal shunt failure secondary to clostridium difficile colitisDistal ventriculoperitoneal shunt obstruction is typically associated with cerebrospinal fluid (CSF) infection, fluid pseudocysts, bowel obstruction, bowel perforation, or improper shunt placement in the abdomen. We describe a unique etiology for distal shunt obstruction secondary to Clostridium di...2005-01-01
1887Yamaguchi, AyakoDistinct neural control of vocal phases in frog callsThis poster describes how the connections within the central vocal pathways of African clawed frogs are responsible for coordinating distinct part of their calls.Vocalizations; Central pattern generators, Motor programs2013
1888Olivera, Baldomero M.Distinction among neuronal subtypes of voltage-activated sodium channels by μ-conotoxin PIIIAThe functional properties of most sodium channels are too similar to permit identification of specific sodium channel types underlying macroscopic current. Such discrimination would be particularly advantageous in the nervous system in which different sodium channel family isoforms are coexpressed i...Conotoxins; m-conotoxin2000
1889Sanchez, Thomas W.Distinguishing city and suburban movers: evidence from the American Housing SurveyA significant amount of research has concentrated on the process of urban decentralization. Resulting patterns of urban development have far-reaching effects on land use, transportation, regional fiscal structure, public services and facilities, economic development, and social equity. Because plann...Location; Mobility; Suburban; Urban2001
1890Zimmer, ZacharyDistinguishing the spending preferences of seniorsOne thousand, four hundred and six seniors were asked about their consumer spending preferences. While some could name a product spending preference, others could not. This study examines the characteristics that best distinguish those elders who are uninterested in spending on consumer products fro...Spending preferences; seniors1996
1891Peterson, John W.Distributed computation for computer animationComputer animation is a very computationally intensive task. Recent developments in image synthesis, such as shadows, reflections and motion blur enhance the quality of computer animation, but also dramatically increase the amount of CPU time needed to do it. Fortunately, the computations involved w...Distributed computation1987
1892Gardner, Reed M.Distributed Data Base and Network for ICU MonitoringBiomedical Informatics1984
1893Parker, Steven G.; Hansen, Charles D.Distributed interactive ray tracing for large volume visualizationWe have constructed a distributed parallel ray tracing system that interactively produces isosurface renderings from large data sets on a cluster of commodity PCs. The program was derived from the SCI Institute's interactive ray tracer (*-Ray), which utilizes small to large shared memory platforms, ...Ray tracing; Volume rendering; Large data; Cluster computing; Distributed shared memory2003
1894Warner, Homer R.The Distribution and Disposal of Cortisol in HumansBiomedical Informatics1964
1895Durrant, Stephen D.The distribution and taxonomy of Kangaroo rats (genus dipodomys) of UtahThe first comprehensive work on the mammals of Utah was published by Barnes in 1922. In this work (Barnes 1922:86-87) only two kangaroo rats were known from the confines of the state. They were known at that time as Perodipus montcmus utahensis and Perodipus longipes. In Barnes revised edition (1927...1945-06-30
1896Miller, Jan D.; Deo, Milind; Lin, Chen-LuhDistribution of multiphase fluids in porous media: comparison between lattice Boltzmann modeling and micro-x-ray tomographyA parallel implementation of the three-dimensional Shan-and-Chen multicomponent, multiphase lattice Boltzmann method (LBM) was used to simulate the equilibrium distributions of two immiscible fluids in porous media. The simulations were successfully validated against cone-beam x-ray microtomographi...Multiphase fluid flow; porous media; X-ray microtomography2008-02
1897Flynn, John J.Distributive justice: some institutional implication of Rawls' Theory of JusticeDistributive justice combines Philosophy;, economics, and jurisprudence in an attempt to establish the fundamental theory by which wealth and resources are allocated among the members of a society. The need for a rationally based distributive system to allocate resources in an organized society aris...Justice, theory; Philosophy;, Law; Jurisprudence; Economics1975
1898Flynn, John J.District of Columbia juvenile delinquency proceddings; apprehension to dispositionWhile all agencies connected with the dentention and treatment of juveniles in the District of Columbia issue annual reports which are available to the public, indications are that a widespread unawareness exists in both bar and judiciary as to the nature, purpose and efffectiveness of the socio-leg...District of Columbia; Juvenile detention (U.S)1960
1899Downes, Stephen M.Disunity of science (book review)Review of the book `The Disunity of Science: Boundaries, Contexts, and Power,' edited by Peter Galison and David J. StumpBooks; Science; Disunity2001-09-24
1900Shapiro, Michael D.Divergence, convergence, and the ancestry of feral populations in the domestic rock pigeonStringham, Sydney A.; Mulroy, Elisabeth E.; Xing, Jinchuan; Record, David; Guernsey, Michael W.; Aldenhoven, Jaclyn T.; Osborne, Edward J.
1876 - 1900 of 10,910