نتایج جستجو برای: repose angle
تعداد نتایج: 131357 فیلتر نتایج به سال:
Wind blowing over sand on Earth produces decimeter-wavelength ripples and hundred-meter– to kilometer-wavelength dunes: bedforms of two distinct size modes. Observations from the Mars Science Laboratory Curiosity rover and the Mars Reconnaissance Orbiter reveal that Mars hosts a third stable wind-driven bedform, with meter-scale wavelengths. These bedforms are spatially uniform in size and typi...
The study diagnosed engineering properties on varying moisture content of sunflower seed and kernel from 7.6 to 25% (wet basis). On increasing moisture, dimensional values increased for both seed and kernel. Bulk density, true density and porosity were found higher for kernel as compared to seed at each moisture content. On increasing the moisture content from 7.6 to 25%, true density, porosity...
The objective of the study was to determine geometric, gravimetric, aerodynamic, and frictional properties maize grain as affected by varietal differences moisture content. Honampa, Omankwa, Abontem, Timtim, Obatanpa were five varieties studied. Moisture content, geometric properties, gravimetric aerodynamic mean diameters ranged between 6.65 7.55 mm, while projected areas 52.98 73.12 m2. surfa...
Discrete element method (DEM) simulation is widely used to calculate the flow characteristics of particles under certain conditions. DEM input parameters are prerequisite for accurate modeling and particles. In order explore mechanical properties breaking behavior gluten pellets, pellet material property, interaction pellet–stainless steel pellet–pellet (multi-spheres autofill model), bonding (...
This paper considers the segregation of a granular mixture in a rotating drum. Extending a recent kinematic model for grain transport on sandpile surfaces to the case of rotating drums, an analysis is presented for radial segregation in the rolling regime, where a thin layer is avalanching down while the rest of the material follows rigid body rotation. We argue that segregation is driven not j...
The present study envisages formulation of wax microparticulate drug delivery system. The objective of the present study was to minimise the unwanted side effects of Ketoprofene drug formulated by Congealable disperse encapsulation method using biodegradable waxes such as beeswax, ceresin wax microspheres using a wetting agent. Solid, discrete, reproducible free flowing microspheres were obtain...
We develop a continuum description for the axial segregation of granular materials in a long rotating drum based on the dynamics of the thin near-surface granular flow coupled to bulk flow. The equations of motion are reduced to the one-dimensional system for two local variables only, the concentration difference and the dynamic angle of repose, or the average slope of the free surface. The par...
Abstarct: This study was carried out to compare the binding effects of rice and wheat starches with that of the official starch; maize starch BP. Granule properties such as angle of repose, moisture content, bulk and tapped densities, Hausner’s ratio, Carr’s index and tablet properties which included weight uniformity, friability, disintegration times, and dissolution rates using standard metho...
from powder characterisation and how the data correlates to process performance and drug product quality in solid dosage form develop ment projects. Data from two development studies will be shown. The development and manufacturing of solid dosage forms relies heavily on powder material. API and tablet excipients are most often handled as a granular material. The powders are mixed and compresse...
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