Results 241 to 250 of about 2,434,328 (286)

Historical variation of the geomagnetic axial dipole

Physics of the Earth and Planetary Interiors, 2008
Abstract The geomagnetic axial dipole (hereinafter denoted g 1 0 ) is the largest component of our planet’s magnetic field. Its magnitude determines the morphology of solar-terrestrial electrical current systems and it is the most fundamental diagnostic property of the core-generated geodynamo. Elucidating past and future variations of
Christopher C Finlay
exaly   +2 more sources

Imbibition in geometries with axial variations

Journal of Fluid Mechanics, 2008
When surface wetting drives liquids to invade porous media or microstructured materials with uniform channels, the penetration distance is known to increase as the square root of time. We demonstrate, experimentally and theoretically, that shape variations of the channel, in the flow direction, modify this ‘diffusive’ response.
Reyssat, Mathilde, Courbin, Laurent, Reyssat, Etienne, Stone, Howard A.   +3 more
openaire   +4 more sources

Pulsewidth Variation of an Axial Vircator

IEEE Transactions on Plasma Science, 2010
The KALI-1000 pulse power system has been used to generate single-pulse nanosecond-duration high-power microwaves from an axial virtual cathode oscillator. The typical electron beam parameters were 250 kV, 15 kA, and 100 ns, with a current density of a few hundreds of amperes per square centimeter. The shot-to-shot variation of the microwave pulsewidth
Amitava Roy, Sandeep Kumar Singh, Rakhee Menon, D Senthil Kumar, Saket Khandekar, Vijay Bhaskar Somu, Susant Chottray, P C Saroj, K V Nagesh, K C Mittal, D P Chakravarthy   +10 more
openaire   +1 more source

Variation in Axial Length and Anatomical Landmarks in Strabismic Patients

Ophthalmology, 1991
The authors calculated axial length measurements in 185 consecutive patients undergoing strabismus surgery and found a mean measurement of 21.98 +/- 1.59 mm (range, 18.75-25.37 mm). Although significant correlation between axial length, refractive error, and age was found, wide variation was present, which indicates that age and refractive error could ...
B J, Kushner, N J, Lucchese, G V, Morton
openaire   +2 more sources

Variation of multifocal electroretinogram with axial length

Ophthalmic and Physiological Optics, 2003
Abstract Introduction: The first‐order kernel response of multifocal electroretinogram (mfERG) decreases in myopia. A recent study indicates that the flash ERG is also reduced with increased axial length.
H L, Chan, N, Mohidin
exaly   +3 more sources

Zero axial irradiance by annular screens with angular variation

SPIE Proceedings, 1990
For optical alignment, it may be convenient to use a three-dimensional diffraction pattern with zero irradiance along the optical axis. This pattern is created here by using annular screens in the form of a phase daisy, a daisy flower, or a pie, with an even number of slices of an equal central angle and with every other slice with a phase retardation ...
J, Ojeda-Castañeda, P, Andrés, M, Martínez-Corral   +2 more
openaire   +2 more sources

Axial variation in the threespine stickleback: relationship to Hox gene expression [PDF]

Development Genes and Evolution, 1999
Despite mounting evidence that key developmental regulator genes are involved in significant macroevolutionary changes, there have been few studies demonstrating the functional significance of variation in such genes for the generation of population-level variation.
Greg Gibson
exaly   +4 more sources

Capillary Displacement of Viscous Liquids in Geometries with Axial Variations

Langmuir, 2016
Axial variations in geometry and presence of viscous displaced fluid are known to alter the diffusive-dynamics of capillary imbibition of a wetting liquid. We here show that the coupled effect of axially varying capillary geometry and finite viscosity of the displaced fluid can lead to significant variations in both short and long time dynamics of ...
Aditya, Budaraju, Jyoti, Phirani, Sasidhar, Kondaraju, Supreet Singh, Bahga   +3 more
openaire   +2 more sources

Axial variation in the threespine stickleback: genetic and environmental factors

Evolution & Development, 1999
Subtle differences in the pattern of arrangement of types of vertebrae and associated median skeletal structures between a benthic and limnetic species pair of threespine stickleback from Paxton Lake, British Columbia, are typical of those found throughout the range of theGasterosteus aculeatusspecies complex.
D G, Ahn, G, Gibson
openaire   +2 more sources

Axial pulmonary trunk diameter variations during the cardiac cycle

Surgical and Radiologic Anatomy, 2020
Previous studies have shown a correlation between axial pulmonary trunk diameter (PTD) on chest computed tomography (CT) and pulmonary artery pressure. However, it is not known whether the PTD slices measured on chest CT have been recorded during the systolic or diastolic phase.
Yasin Sarıkaya, Sevtap Arslan, Onur Taydaş, Yasin Erarslan, Orhan Macit Arıyürek   +4 more
openaire   +3 more sources