One of the key parameters in Fluidized Bed reactors is the control of biofilm thickness and configuration. The effect of upflow velocity on performance and biofilm characteristics of an Anaerobic Fluidized Bed Reactor was studied in treating Currant wastewater at various loading rates. The reactor used this study was made of a plexiglass column being 60 mm diameter, 140 cm height, and a volume ...

OBJECTIVE Numerous calculations routinely used in the intensive care require the knowledge of patients' weight and height, although these measurements are not always made. Estimates by doctors or nurses are often substituted. This study sought to ascertain the accuracy of estimates of weight and height of patients made by intensive care unit (ICU) staff. DESIGN : Prospective clinical study. ...

This study investigates the dynamics of a spherical projectile impact onto granular bed via numerical simulations by discrete element method (DEM). The is modeled as an assembly polydisperse particles and represented rigid sphere. DEM model used to investigate cratering process, including energy transformation dissipation. process illustrated tracking motion in bed. results show that follows ge...

Downfall flows from different outlet hydraulic structures such as culverts and jetsthrowingtothe erodible downstream bed cause scour hole and changes in the downstream bed topography. Therefore,by performing some physical modeling tests on culvert jet flow under different angles, changes in the downstream bed topography under the effect of different parameters such as flow rate, depth of the ta...

We measure shear response in packings of glass beads by pulling a thin, rough, metal plate vertically through a bed of volume fraction φ, which is set, before the plate is pulled, in the range 0.575 to 0.628. The yield stress is velocity independent over 4 decades and increases exponentially with φ, with a transition at φ ≈ 0.595. An analysis of the measured force fluctuations indicates that th...

Intensive greenhouse agriculture annually produces large amounts of residues. The present work focused on the study dynamic adsorption cobalt from aqueous solutions over a vegetal residue intensive cultivation. influence three operating variables, feed-flow rate, inlet concentration and bed height, was analyzed. According to results, variable that particularly affected percentage adsorbed rate....

The rising popularity of incineration of municipal solid waste (MSW) calls for detailed mathematical modelling and understanding of the incineration process. In this paper, governing equations for mass, momentum and heat transfer for both solid and gaseous phases in a moving bed in a solid-waste incineration furnace are described and relevant sub-models are presented. The burning rates of volat...

A 4-year-old girl was brought to our hospital by her parents because of abdominal pain. She had suffered minor trauma after rolling from her standard-height bed 2 days prior. Vital signs were appropriate for age. Physical examination was remarkable for decreased breath sounds to the left side of the chest. A chest radiograph (Figure) demonstrated a large gas-filled structure in the left side of...

Transferring between surfaces is an important part of wheelchair users’ lives and are performed an average of 11 to 20 times each day (Koontz, Bass, & Cooper, 2015). When people think of wheelchair transfers, often what comes to mind are transfers to or from another surface that is similar in height, such as wheelchair-to-bed or wheelchair-to-car transfers. Transfers that are considered less of...

The steady groundwater flow of water to drains on a sloping bed is re-examined. Results from a number of solutions for the maximum watertable height (hm) for flow to drains on slopes are presented and compared with published HeleShaw model results and HYDRUS2D numerical model calculations. Numerical modelling shows that when the length of the slope (L)  < 50 m the ratio L/hm is affected by L (...