In the present work, the drying of calcium carbonate in a batch spouted bed dryer with inert particles has been investigated experimentally. The effect of several operating parameters including air temperature (90, 100, and 110 ˚C), air velocity (Ums, 1.2 Ums, and 1.5 Ums), and dry solid mass (5, 10, 20 g) has been studied. The Taguchi method has been applied to determine the optimal parameters...

convulsion is one of the most common problems in children and hypocalcemia is one the most frequent etiological items in children’s convulsion. corrected qt (qtc) in ekg is prolonged in hypocalcemia, so it can be a useful tool for evaluation of serum ionized calcium. in three groups (first seizure, multiple seizures, without seizure or control ) every 25 cases, qtc, serum ionized ca, total ca, ...

Encapsulation of probiotic bacteria with a matrix can increase their survival rate by protecting them from adverse conditions and at the same time without affecting the production of metabolites. An effort has been made to encapsulate the probiotic Lactobacillus plantarum using calcium alginate. Box-Behnken model of response surface methodology (RSM) was employed in the optimization of major en...

Algorithmic skeletons correspond to a high-level programming model that takes advantage of nestable programming patterns to hide the complexity of parallel/distributed applications. Programmers have to: define the nested skeleton structure, and provide the muscle (sequential) portions of code which are specific to a problem. An inadequate structure definition, or inefficient muscle code can lea...

the in vitro dissolution of plasma-sprayed hydroxyapatite (pha) coatings with different characteristics, produced by various spraying conditions, in a tris-buffered solution at ph 7.4 was experimentally studied through the measurement of calcium ions release with inductively coupled plasma atomic emission spectroscopy (icp-aes), and then modeled. three coating characteristics, the crystallinity...

Adseverin is a member of the calcium-regulated gelsolin superfamily of actin-binding proteins. Here we report the crystal structure of the calcium-free N-terminal half of adseverin (iA1-A3) and the Ca(2+)-bound structure of A3, which reveal structural similarities and differences with gelsolin. Solution small-angle X-ray scattering combined with ensemble optimization revealed a dynamic Ca(2+)-d...

Optimization of an acidic calcium phosphate cement with enhanced radiopacity. INTRODUCTION: Calcium phosphate cements (CPCs) are commonly used in biomedical applications due to their resemblance to the mineral phase of bone. However, due to this resemblance the radiopacity of CPC is very similar to that of bone. The inorganic radiopacifiers (e.g. ZrO 2 and BaSO 4) commonly used in non degradabl...