Results 251 to 260 of about 583,669 (295)

Radial voidage variation in CFB risers

The Canadian Journal of Chemical Engineering, 2001
AbstractA new correlation for estimating local voidage in CFB risers is provided based on data obtained in a riser of diameter 76 mm and height 6 m using FCC particles at superficial gas velocities between 4 and 8 m/s and solids circulation fluxes up to 425 kg/m2s.
Allan S. Issangya, John R. Grace, Dingrong Bai, Jingxu Zhu   +3 more
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Radial porosity variations in packed beds

AIChE Journal, 1958
AbstractThe radial variation of void fraction in randomly packed beds of spheres, cylinders, Raschig rings, and Berl saddles was investigated. After packing, the beds were filled with paraffin, which was then allowed to solidify. Slabs were cut from the bed, and annular rings were removed by two different experimental techniques.
L. H. S. Roblee, R. M. Baird, J. W. Tierney   +2 more
openaire   +1 more source

Bilateral variation in radial bone speed of sound

European Radiology, 2004
The aims of this study were to: (a) examine differences in speed of sound (SOS) between the right (SOS(R)) and left (SOS(L)) radius; (b) detect bone loss following proximal forearm fracture by SOS measurement at the radius; and (c) compare SOS(L) and bone mineral density (BMD) of one-third, mid-distal, ultra-distal and total region of the left radius ...
H, Vrahoriti, J, Damilakis, G, Papadokostakis, A, Hadjipavlou, N, Gourtsoyiannis   +4 more
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Corneal thickness variation during eight-incision radial keratotomy

Journal of Cataract and Refractive Surgery, 1997
To determine the degree of corneal thickness variability that may be encountered during routine radial keratotomy (RK) surgery.Office refractive surgical suite. Laurel Eye Clinic, Brookville, Pennsylvania.This study statistically analyzed variability in corneal thickness measured at the optical zone in 140 consecutive eight-incision RK cases ...
L D, Nichamin, M G, Raanan
openaire   +2 more sources

Diurnal Variation of Corneal Topography After Radial Keratotomy

Archives of Ophthalmology, 1992
A computerized videokeratography system was used to evaluate diurnal changes in corneal curvature of both untreated and surgically treated eyes of 11 patients who had undergone unilateral radial keratotomy. The mean postoperative interval was 34.5 months.
S, Kwitko, D C, Gritz, J J, Garbus, W J, Gauderman, P J, McDonnell   +4 more
openaire   +2 more sources

Variation of Radial Elasticity in Multiwalled Carbon Nanotubes

Nano Letters, 2007
Correlations between the local diameter and local radial elastic modulus in multiwalled carbon nanotubes (MWNTs) were investigated via ultrasonic force microscopy. Spatial cross-correlation analysis showed that local radial modulus variations were inversely correlated with local diameter gradients ("bamboo" structures) in MWNTs grown via chemical vapor
Lata, Muthaswami, Yuegui, Zheng, Robert, Vajtai, G, Shehkawat, Pulickel, Ajayan, Robert E, Geer   +5 more
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Radial Velocity Variations of HR 6684

Publications of the Astronomical Society of the Pacific, 1974
Photometric and spectroscopic observations of HR 6684 confirm the photometric period of 0.139890 day and show a well-defined velocity variation with an amplitude of 11.3 km sec-1 in the same period.
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Radial Velocity Variations in Cool Supergiants

International Astronomical Union Colloquium, 1984
AbstractA survey of F, G, and W supergiants has been carried out with the DAO radial velocity spectrometer, an efficient instrument for detecting low-amplitude velocity variations in cool stars. Observations of 78 stars over five seasons show generally good agreement with OORAVEL results for spectroscopie binaries.
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Variations of Origin of Radial Artery

Introduction: Radial artery is the smaller terminal branch of brachial artery arising in the cubital fossa, at the level of the neck of radius. This artery is commonly used to do coronary artery angiography, canulation. Aim: To study variations in the origin of radial artery. Various variations in the origin of radial artery were reported earlier, high
P. Nikhila Ratna, T. Neeraja, S. Suneetha, S. Ravindrakishore, D. Radhika   +4 more
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Radial variation of lunar crater rim topography

Icarus, 1977
The paper presents results of determinations of variations of rim topography as a function of range from the crater rim for a group of morphologically fresh craters. It is found that the rate at which exterior crater topography converges with the surrounding surface is highly variable among different radial directions at individual craters as well as ...
Mark Settle, James W. Head
openaire   +1 more source