In this work, quantitative structure-retention relationship (QSRR) approaches were applied for modeling and prediction of the retention index of 282 amino acids (AAs) and carboxylic acids (CAs). Descriptors that were used to encode structural features of molecules in a data set were calculated by using the Dragon software. The genetic algorithm (GA) and stepwise multiple linear regression (MLR)...

In three experiments, we investigated the role of transfer-appropriate processing and elaborative processing in the testing effect In Experiment 1, we examined whether the magnitude of the testing effect reflects the match between intervening and final tests by factorially manipulating the type of intervening and final tests. Retention was not enhanced for matching, relative to mismatching, int...

Gas chromatographic measurements of the relative retention times of alkyl-substituted arenes and phenols on capillary columns at temperatures of 125 ̊C 140 ̊C have shown that logarithms of retention times increase bi-linearly with the number of carbon atoms in the molecule. It was found that in a high density stationary phase, the longer alkyl side chains of compounds in question are subject to c...

The addition of 2 and 5 wt% piassava fiber, a natural lignocellulosic fiber extracted from Brazilian palm tree botanically named Attallea funifera, into cement-based matrix composites was investigated. Both alkali-treated fibers by NaOH non-treated were embedded in Portland cement, lime, sand to fabricate mortars intended for civil construction. non-aged fresh tested paste consistency, water re...

Leaching losses of nitrogen (N) from soil and atmospheric N deposition have led to widespread changes in plant community and microbial community composition, but our knowledge of the factors that determine ecosystem N retention is limited. A common feature of extensively managed, species-rich grasslands is that they have fungal-dominated microbial communities, which might reduce soil N losses a...