BACKGROUND/AIMS To identify prodromal Alzheimer's disease (AD) subjects using a data-driven approach to determine cognitive profiles in mild cognitive impairment (MCI). METHODS A total of 881 MCI subjects were recruited from 20 memory clinics and followed for up to 5 years. Outcome measures included cognitive variables, conversion to AD, and biomarkers (e.g. CSF, and MRI markers). Two hierarc...

The chemical composition and physicochemical properties of hexane ethyl acetate extracts skin, juice, seeds Opuntia dillenii fruit collected from three Moroccan regions (Oujda, Nador, Essaouira) were studied. study revealed that the seed oil presented highest yield 13.12%, followed by skin fraction (1.77%) juice extract (0.49%). evaluation fatty acid compositions using GC-MS analysis presence l...

Premise of research. Geochemical fingerprinting fossil plants is a relatively new research field complementing morphological analyses and providing information for paleoenvironmental interpretations. Ginkgoales contains single extant species but was diverse through the Mesozoic an excellent target biochemical analyses.Methodology. Cuticles derived from fresh fallen autumn leaves Ginkgo biloba s...

Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Provided Data Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Exercise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Fourteen commercial soft drinks have been analyzed using colorimetric sensor arrays made from a set of 25 chemically responsive dyes printed on a hydrophobic membrane. Digital imaging of the dye array before and after immersion provides a color change profile as a unique fingerprint for each specific analyte. The digital data library generated was analyzed with statistical and chemometric metho...

Logistics Network Infrastructure (LNI) is an important area of Logistics Infrastructure Capability (LIC). The connotation of LNI is analyzed in this paper. Compared with the extensive research on LNI in developed world, empirical work is still rare in China. In this paper the theory of LNI is firstly overviewed. Then a new evaluation index system for LNI evaluation is set up which contains fact...

Previous studies have determined biomass burning as a major source of air pollutants in the ambient Thailand. To analyse impacts meteorological parameters on variation carbonaceous aerosols and water-soluble ionic species (WSIS), numerous statistical models, including apportionment analysis with assistance principal component (PCA), hierarchical cluster (HCA), artificial neural networks (ANNs),...

Abstract. Particulate matter (PM) largely consists of secondary organic aerosol (SOA) that is formed via oxidation biogenic and anthropogenic volatile compounds (VOCs). Unambiguous identification SOA molecules their assignment to precursor vapors are challenges have so far only succeeded for a few marker compounds, which now well characterized (partly) available as authentic standards. In this ...