21 research outputs found
Stepwise strategy based on 1H-NMR fingerprinting in combination with chemometrics to determine the content of vegetable oils in olive oil mixtures
1H NMR fingerprinting of edible oils and a set of multivariate classification and regression models organised in a decision tree is proposed as a stepwise strategy to assure the authenticity and traceability of olive oils and their declared blends with other vegetable oils (VOs). Oils of the âvirgin olive oilâ and âolive oilâ categories and their mixtures with the most common VOs, i.e. sunflower, high oleic sunflower, hazelnut, avocado, soybean, corn, refined palm olein and desterolized high oleic sunflower oils, were studied. Partial least squares (PLS) discriminant analysis provided stable and robust binary classification models to identify the olive oil type and the VO in the blend. PLS regression afforded models with excellent precisions and acceptable accuracies to determine the percentage of VO in the mixture. The satisfactory performance of this approach, tested with blind samples, confirm its potential to support regulations and control bodies
Fox : a un año de la alternancia
Reflexiones crĂticas desde diversas disciplinas de las ciencias sociales acerca del primer año de gobierno de Vicente Fox Quesada. Entre los rubros que se analizan estĂĄn: la polĂtica cultural, el sector rural, los jĂłvenes, los derechos humanos, la cultura indĂgena y la seguridad pĂșblica.ITESO, A.C
Association between markers of glycemia and carotid intima-media thickness: the MARK study
Disciplinary Points of Departure: How Area Studies Librarians Fit Within the Subject Paradigm
Development of Antimicrobial Biodegradable Films Based on Corn Starch with Aqueous Extract of Hibiscus sabdariffa
The Blended Business Librarian: Technology Skills in Academic Business Librarian Job Advertisements
Fox : a un año de la alternancia
Reflexiones crĂticas desde diversas disciplinas de las ciencias sociales acerca del primer año de gobierno de Vicente Fox Quesada. Entre los rubros que se analizan estĂĄn: la polĂtica cultural, el sector rural, los jĂłvenes, los derechos humanos, la cultura indĂgena y la seguridad pĂșblica
A rainfall-manipulation experiment with 517 Arabidopsis thaliana accessions
The gold standard for studying natural selection and adaptation in the wild is to quantify lifetime fitness of individuals from natural populations that have been grown together in a common garden, or that have been reciprocally transplanted. By combining fitness values with species traits and genome sequences, one can infer selection coefficients at the genetic level. Here we present a rainfall-manipulation experiment with 517 whole-genome sequenced natural accessions of the plant Arabidopsis thaliana spanning the global distribution of the species. The experiments were conducted in two field stations in contrasting climates, in the Mediterranean and in Central Europe, where we built rainout shelters and simulated high and low rainfall. Using custom image analysis we quantified fitness- and phenology-related traits for 23,154 pots, which contained about 14,500 plants growing independently, and over 310,000 plants growing in small populations (max. 30 plants). This large field experiment dataset, which associates fitness and ecologically-relevant traits with genomes, will provide an important resource to test eco-evolutionary genetic theories and to understand the potential evolutionary impacts of future climates on an important plant model species