12,209 research outputs found
Identification of Lactic Acid Bacteria Isolated from Oat Sourdoughs and Investigation of their Potential for the Improvement of Oat Bread Quality
No full textPMSE 428-Experimental approach to investigate the influence of lipid composition on the protein insertion
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Explaining the intention to use digital personal data stores: An empirical study
No full textRecent data leaks such as those involving Dropbox have apparently made Internet users feel less secure than in the past as they face risks when dealing with their digital personal data. However, consumers have increasingly embraced cloud computing empowered Digital Personal Data Stores (DPDSs). To understand this paradox, this study shifts the unit of analysis of DPDSs acceptance from organizations to individuals/consumers and identifies the drivers of adoption of DPDSs (beyond broadly defined cloud computing services). Moreover, it proposes, develops and tests empirically a comprehensive extended version of the Technology Acceptance Model (TAM) in the context of DPDSs, leveraging perceived privacy risks and trust. Using a panel of UK consumers, we find that perceived trust positively influences both usefulness and ease of use. These constructs, in turn, positively affect attitude towards using DPDSs, which ultimately increases the intention to use DPDSs. Privacy risk does not moderate any of the investigated relationships, thus suggesting that trust is a key underlying mechanism enhancing the acceptance of DPDS. Hence, theoretical and managerial implications are discussed
A CALIBRATION OF EK CEPHEI
No full textAbstract EK Cephei (HD 206821) is a unique candidate to test predictions based on stellar evolutionary models. It is a double-lined detached eclipsing binary system with accurate absolute dimensions available, good determination of the metallicity and in particular of the lithium abundance. Most importantly, for our work, its low mass (1.12 M ) component appears to be in the pre-main sequence (PMS) phase, being therefore the rst known solar-type PMS star with a directly determined mass. We have produced detailed evolutionary models of the binary EK Cep using the CESAM stellar evolution code Our results show clearly that EK Cep A is in the beginning of the main sequence, while EK Cep B is indeed a PMS star. We will complement this study by modeling the chemical evolution of the two components given the special relevance of their properties and age for studying this aspect of the evolution. Introduction Modeling a single star is not a closed problem because the number of parameters to be determined is larger than the observational constraints. The parameters of a model of a star are the stellar mass M , the mixing length parameter α, the initial helium abundance Y i , the initial metallicity [Fe/H] i and the model's age t . In most cases, there are only two reliable observables, namely the effective temperature and the luminosity
EK improves lipid accumulation in the liver of high-fat diet-induced C57BL/6 mice.
No full text<p>(A-C): H&E staining (×200) of livers from the standard diet (A), HF diet (B) and HF+EK mice (C). (D-F): Oil red O staining (×400) of the liver sections from the standard diet (D), HF diet (E) and HF+EK mice (F). The sections were counterstained with hematoxylin. The quantitative results of TG (G) and TC (H) content in livers are shown. The mice were fed with a high-fat diet for 5 weeks and EK was powdered and mixed into the diet at 0.05% (wt/wt). The data were presented as mean ± SE. N = 7 for all groups. * P<0.05.</p
Impact of sourdough on buckwheat flour, batter and bread: Biochemical, rheological and textural insights
No full textNutritional properties and ultra-structure of commercial gluten free flours from different botanical sources compared to wheat flours
No full textMagnetic fields on young, moderately rotating Sun-like stars - II. EK Draconis (HD 129333)
No full textThe magnetic fields, activity and dynamos of young solar-type stars can be empirically studied using time series of spectropolarimetric observations and tomographic imaging techniques such as Doppler imaging and Zeeman-Doppler imaging. In this paper, we use these techniques to study the young Sun-like star EK Draconis (SpType: G1.5V, HD 129333) using ESPaDOnS at the Canada-France-Hawaii Telescope and NARVAL at the T ' elescope Bernard Lyot. This multi-epoch study runs from late 2006 until early 2012. We measure high levels of chromospheric activity indicating an active, and varying, chromosphere. Surface brightness features were constructed for all available epochs. The 2006/2007 and 2008 data show large spot features appearing at intermediate latitudes. However, the 2012 data indicate a distinctive polar spot. We observe a strong, almost unipolar, azimuthal field during all epochs, which is similar to that observed on other Sun-like stars. Using magnetic features, we determined an average equatorial rotational velocity, Omega(eq), of similar to 2.50 +/- 0.08 rad d(-1). High levels of surface differential rotation were measured with an average rotational shear, Delta Omega, of similar to 0.27(-0.26)(+0.24) rad d(-1). During an intensively observed 3-month period, from 2006 December until 2007 February, the magnetic field went from predominantly toroidal (similar to 80 per cent) to a more balanced poloidaltoroidal (similar to 40-60 per cent) field. Although the large-scale magnetic field evolved over the epochs of our observations, no polarity reversals were found in our data
Growth Study, Metabolite Development, and Organoleptic Profile of a Malt-Based Substrate Fermented by Lactic Acid Bacteria
No full textThe objective of this study was to investigate the fermentation of barley malt extract by four different lactic acid bacteria (LAB) species and to analyze the effect on biological, physicochemical, and organoleptic attributes of the resulting beverages. Malt and wort were analyzed following the Methodensammlung der Mitteleuropaischen Analysenkommission (MEBAK). Sugars and organic acids were evaluated using HPLC, while aroma compounds and ageing indicators were quantified using a head-space GC-FID. Unhopped wort was able to support the growth of all LAB during the whole experiment time (120 hr), with a cell count increase up to 3.63 log orders. The strain-specific preferences for carbon and nitrogen sources led to significant differences in the accumulation of metabolic byproducts (i.e., organic acids and flavor-active compounds released in the medium). LAB fermentation lowered the amount of some Strecker-aldehydes (2- and 3-methylbutanal and 2-phenylacetaldehyde) carrying "malty" off-flavors and increased dairy-related aroma compounds such as diacetyl and acetoin ("buttery"). The fermented samples were sensorially distinct and described with "bready", "yeasty", "yogurty", or "honey" attributes. In general, LAB fermentation conferred flavor complexity to wort. Forced ageing of the fermented samples led to a large increase of "staling" indicators but these samples improved organoleptic stability compared with the unfermented control
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