Results 241 to 250 of about 73,121 (297)

Upper lip elevation in autonomous maximal smile: A three-dimensional facial imaging study. [PDF]

Korean J Orthod
Ren R, Zhang X, Chen Y, Zheng W, Li Y.
europepmc   +1 more source

Polymeric Matrix Mini-Tablets Based on Eudragit^® S 100 and HPMC for Controlled Release of Pantoprazole. [PDF]

Pharmaceutics
Pardo H, Peña MÁ, Martínez-Alonso B, Torrado-Salmerón C, Guarnizo-Herrero V.   +4 more
europepmc   +1 more source

Relaxation at the Angle of Repose

Physical Review Letters, 1989
We have investigated the distribution of avalanches which occur when the slope of a sandpile exceeds the metastable slope given by the angle of repose. In contradiction to recent models by Bak, Tang, and Wiesenfeld for the dynamics of granular systems, we do not observe power-law distributions. We also find that the slope of a sandpile decays as $log(t)
, Jaeger, , Liu, , Nagel
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Angles of repose that exceed modern angles

Geology, 1990
Angles of repose for naturally occurring materials are known to be a function of, among other geologic parameters, the acceleration of gravity and cohesion between particles. Thus, steeper angles may have been recorded in ancient sediments because Earth9s acceleration of gravity was less than now.
C. John Mann, Sherman P. Kanagy II
openaire   +1 more source

Geometric effect of angle of repose revisited

Granular Matter, 2014
We report on a universal pattern observed in the collapse dynamics of a sand heap. Collapse dynamics of a three-dimensional sand heap were studied through experiments and numerical simulations. A phenomenological law that describes the shape of a collapsed sand heap was found, we call this the geometric constitutive law of friction.
Miki Y. Matsuo, Daisuke Nishiura, Hide Sakaguchi   +2 more
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Flow Rates and Repose Angles of Wet-Processed Granulations

Journal of Pharmaceutical Sciences, 1977
The equation of McDougall and Evans was found not to apply to granulations. The functional relationships among volumetric powder flow rates, angles of repose, and particle size were demonstrated to exhibit maxima (rather than minima) in five common pharmaceutical granulations produced by wet processing.
J T, Carstensen, P C, Chan
openaire   +2 more sources

Measurement of the Repose Angle of aTablet Granulation*

Journal of the American Pharmaceutical Association (Scientific ed.), 1955
In order to study the problem of granulation flow in tableting as it is related to interparticle friction, the response angle of a sulfathiazole granulation was studied as a function of average particle size, presence of lubricants, and admixture of fines.In general, the repose angle increased with decreasing particle size.Talc added to granules in ...
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Angle of repose and internal friction

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1966
Abstract The relation between angle of repose and angle of internal friction in a fragmented mass is discussed, and experiments with crushed rocks are reported. It is concluded that the angle of repose is not generally the angle of internal friction of the material in the pile, but of the same material in a more closely packed condition.
openaire   +1 more source

Angles of repose, angles of shearing resistance and angles of talus slopes

Earth Surface Processes, 1977
Recent arguments that the straight parts of talus slopes stand, in general, at angles less than the angle of repose of the talus material are considered in relation to different test procedures used in the measurement of the repose angle. Observations on coarse, well sorted, angular fragments showed no significant difference between the values for this
openaire   +1 more source