Aiming to overcome poly(lactic acid) (PLA) limitations regarding flammability and high costs, a highly refractory clay (RC) was employed produce PLA/RC composites. The composites with contents of 0, 2.5, 10 15 wt% were produced by extrusion, conformed injection molding, characterized thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), mechanical analysis, electron microsc...

Abstract In sheet metal forming processes, friction increases the force parameters of process and produces a deterioration in quality surface components. The basic way to reduce unfavourable impact is lubricate with commercial oils. This article presents results experimental studies analysis variance (ANOVA) DC01 low-carbon steel sheets using strip drawing test. For these tests, special device ...

This study was done in order to evaluate the changes flexural strength and surface roughness dental material restorations after immersion coffee. Bars specimens (2mm x 2mm 25 mm) of Z100 3M/ESPE were made according ISO 4049 using aluminum molds. After curing, then randomly divided into five groups conditioned at 37°C physiological serum. In all groups, except control, samples immersed coffee fo...

the current investigation presents the role of gooseberry (phyllanthus acidus) seeds as an effective biosorbent for remediating chromium (vi)), a toxic heavy metal pollutant commonly found in effluents from tanneries and relevant industries. biosorption was affected by ph, temperature and initial metal concentration. furthermore, there is a need to understand the holistic effect of all variable...

ANOVA tests are the standard tests to compare nested linearmodels fitted by least squares. These tests are equivalent to likelihood ratio tests, so they have high power. However, least squares estimators are very vulnerable to outliers in the data, and thus the related ANOVA type tests are also extremely sensitive to outliers. Therefore, robust estimators can be considered to obtain a robust al...

Unbalanced group-level models are common in neuroimaging. Typically, data for these models come from factorial experiments. As such, analyses typically take the form of an analysis of variance (ANOVA) within the framework of the general linear model (GLM). Although ANOVA theory is well established for the balanced case, in unbalanced designs there are multiple ways of decomposing the sums-of-sq...