the main objective of the present study is to investigate the feasibility of using carboxymethyl chitosan magnetic nanoparticles (ccmn) for the adsorption of cd2+. the study also reports important parameters, which affect the adsorption process, i.e., ph, adsorbent dose, contact time and concentration of cd2+, using box-behnken designs. firstly, functional carboxymethyl chitosan magnetic nanopa...

perlite or pearl stone is a natural glass which has formed by rapid cooling of viscous lava or magma. perlite is mainly composed of silica, aluminum, potassium and sodium. in this experiment, perlite was used as a low-cost source of si and al to synthesis of sodalite zeolite using the alkaline hydrothermal treatment. a statistical taguchi design of experiments was employed to evaluate the effec...

background a potential treatment for healing hepatic tissue is delivering isolated hepatic cells to the site of injury to promote hepatic cells formation. in this technology, providing an appropriate injectable system for delivery of hepatic cells is an important issue. in this regard, fibrin scaffolds were designed with many advantages over other scaffolds like cell delivery vehicles for biode...

Quantitative electron microscopy can benefit from an accompanied statistical experimental design. Using parameter estimation theory, an optimality criterion based on the statistical precision with which parameters of an object can be measured is proposed. It is intended to be objective and it depends on object and electron dose, which are usually not accounted for in the literature. The criteri...

Finding optimal operating conditions fast for process systems is a key competitive factor in fine chemicals and pharmaceutical industrial sectors to increase the value added in many stages of a product/process lifecycle. To deal successfully with noise and bias in experimental optimization a statistical characterization of a local optimum that is more amenable for process outputs rather than nu...

Since the introduction of serial analysis of gene expression (SAGE) as a method to quantitatively analyze the differential expression of genes, several statistical tests have been published for the pairwise comparison of SAGE libraries. Testing the difference between the number of specific tags found in two SAGE libraries is hampered by the fact that each SAGE library is only one measurement: t...

The JQT Editorial Review Board instituted the Lloyd S. Nelson Award recognizing the article in the most recent volume, beginning with Volume 35 (2003), having the "greatest immediate impact to practitioners." The Statistics Division of ASQ, headed by Chair Davis Balestracci, carefully studied the articles appearing in last year’s issues. We greatly appreciate the dedication and effort of Davis ...