Now showing items 31-40 of 106
Gravitational lensing of quasar 0957+561 and the determination of H0
(The American Institute of Physics, 1995-07-01)
We present results of a deep imaging study of the cluster lensing the double quasar Q0957+561. Using data obtained at KPNO and CFHT we have detected distortions in the lensed blue background galaxy population. From these ...
Portable instrument employing a surface acoustic wave sensor with a regenerable reagent coating for direct measurement of 1,3‐butadiene and styrene
(The American Institute of Physics, 1995-01)
The design and preliminary laboratory testing of a prototype portable instrument capable of near‐real‐time measurement of selected airborne olefins and dienes at low‐ and sub‐ppm concentrations is described. The sensor ...
FDG PET imaging of paragangliomas of the neck: comparison with MIBG SPET
(Springer-Verlag, 1995-11)
Two patients with cervical paragangliomas underwent positron emission tomography (PET) with 2-[ 18 F]-fluoro-2-deoxy-D-glucose (FDG). There was marked tumor uptake and retention of FDG. Adjacent salivary gland accumulation ...
Excitonic radiative dynamics in multiple quantum wells
(WILEY-VCH Verlag, 1995-03-01)
The fundamental intrinsic radiative process associated with excitons in semiconductor multiple quantum wells is discussed within the context of exciton polaritons. Multiple quantum wells in which each well is randomly ...
Tsunami generation of the 1993 Hokkaido Nansei-Oki earthquake
(Birkhäuser-Verlag; Birkhäuser Verlag ; Springer Science+Business Media, 1995-09)
Heterogeneous fault motion of the 1993 Hokkaido Nansei-Oki earthquake is studied by using seismic, geodetic and tsunami data, and the tsunami generation from the fault model is examined. Seismological analyses indicate ...
A Monte Carlo investigation of dual-energy-window scatter correction for volume-of-interest quantification in 99Tcm SPECT
(IOP Publishing Ltd, 1995-01-01)
Using Monte Carlo simulation of 99Tcm single-photon-emission computed tomography (SPECT), the authors investigate the effects of tissue-background activity, tumour location, patient size, uncertainty of energy windows, and ...
Femtosecond studies of the iodine–mesitylene charge‐transfer complex
(The American Institute of Physics, 1995-11-08)
Femtosecond laser studies have been performed to investigate the initial photodissociation reactions of I2–mesitylene charge transfer complexes. Photodissociation occurs along both the I2–mesitylene ‘‘bond’’ and the I–I ...
Regular solutions of the Einstein–Yang–Mills equations
(The American Institute of Physics, 1995-08)
It is shown rigorously that any static symmetric solution of the Einstein–Yang–Mills (YM) equations with SU(2) gauge group that is well behaved in the far field is one of three types: black hole, particlelike, or ...
The evolution of texture in thin films and multilayers via synchrotron transmission Laue and grazing-incidence X-ray scattering
(IOP Publishing Ltd, 1995-04-14)
Sputter-deposited films and multilayers are used for a wide variety of applications including protective coatings on turbine engine blades, magnetic recording heads, optical elements, electronic packaging, X-ray filters ...
Laser deposition of diamondlike carbon films at high intensities
(The American Institute of Physics, 1995-11-20)
Unhydrogenated diamondlike carbon (DLC) thin films have been deposited by laser ablation of graphite, using a high power Ti: sapphire solid state laser system. DLC films were deposited onto silicon substrates at room ...