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This work describes a method to study glass transition on native starch powders, based on dynamical mechanical thermal analysis using compression tests, and was applied to wheat flour (13.5% water content). This method will allow the determination of Tg in native (unprocessed) starchy materials, with minimal disturbance of the natural structures. The influence of the test conditions (heating rate, frequency and strain) on the glass transition measurements was determined using factorial designs. The values of Tg determined as the maxima of the energy dissipation (peaks in E″) of native flour and of freeze-dried pre-gelatinized flour were not statistically different (around 64 °C). The heating rate did not affect the measurements in the range tested (0.25 to 1 °C min−1). An interactive effect of the strain amplitude and the frequency was detected. The significance of this interaction can be caused by differences in mechanical energy dissipation, which would indicate that not only temperature but also the total energy input may affect this transition. Slight effects of phase separation between gluten and starch were found on native flour.

The protein adsorption capacity of different materials was evaluated to assess their potential efficacy as alternative adsorbents for the removal of proteins from wines, with the purpose of finding suitable low-swelling materials that could be used in a percolated bed. The adsorbents tested were thermally treated sodium bentonite, low-swelling adsorbing clays, ion exchange resins and other protein adsorbents (silica gel, hydroxyapatite and alumina). The materials were evaluated by analysing both the capacity to stabilize untreated white wines, according to a heat test, and by characterizing the adsorption isotherms of bovine serum albumin (BSA) in a model wine (water, ethanol and K-bitartrate). Breakthrough curves in a packed bed were determined experimentally for some materials, showing the influence of the adsorption isotherm shape. Some ion-exchange resins showed a favourable behaviour and have good potential as alternative adsorbents.

The inactivation kinetics of horseradish peroxidase were determined at several values of pH (3, 4, 7, 9 and 10), temperature (40 to 70 °C) and pressure (7, 8 and 9 kbar). The data were obtained by taking samples from the moment that pressure inside the hydrostatic high pressure vessels reached the value specified, and therefore relate to isothermal and isobaric conditions. The inactivation kinetics were non‐log linear and could be individually well described by the conventional two‐fraction model, but the overall consistency of the kinetic parameters of this model was poor and the model was clearly not robust. Inversely, the kinetic model based on the Weibull probability distribution function yielded good individual fits and also a good overall consistency of the kinetic parameters. The whole set of 327 data points could be well described by an overall model considering that the shape parameter (ß) varied with pressure but not with temperature and that the rate parameter (1/α) varied with temperature according to an Arrhenius law, with a pressure‐independent activation energy, and varied exponentially with pressure. The activation energy and the pressure‐sensitivity parameter did not vary with pH up to pH 9. The results suggested a discontinuity of the kinetic behaviour at pH 10, with a different inactivation mechanism prevailing.

Adsorption of wine proteins is an essential step in the production of white and rosé wines. In order to develop environmentally friendly adsorption processes, non-swelling adsorbents are required. The performance of selected non-swelling ion-exchange resins (Macro-Prep™ 50S and Streamline® SP) was studied by describing the process kinetics of the adsorption of BSA in a model wine solution. The process was assumed to be diffusion controlled and a shrinking core model was applied. Experiments were performed in the 5–35°C temperature range and with different equilibrium partition coefficients. The results obtained with the shrinking core model were theoretically consistent and the apparent diffusivity values correlated very well with theoretically estimated effective diffusivities combined with a linear dependence of porosity with temperature. Separating the temperature effect on porosity, the apparent diffusivity followed an Arrhenius type dependency with temperature with 16.9 kJ/mole activation energy.

This paper shows how mathematical concepts can be displayed on World Wide Web pages. A few of the most interesting solutions are outlined although a few others are missing and a few more will be invented very soon. It is for authors to decide which system is the most suitable for their purposes.

The kinetics of thermal degradation of ascorbic acid was studied in a Maltodextrin matrix at different temperatures between 75 and 140 °C. Isothermal experiments were performed with samples earlier equilibrated in environments of known aw at 4 °C, enclosed in hermetically sealed vials, with water contents (w) between 0.17 and 1.68 g water/g solids. Sampling times were selected according to an optimal experimental design in terms of minimum confidence regions of the parameters estimated, using the Bigelow model and estimates from preliminary experiments. The results showed a quadratic dependence of the reference D-value and linear dependence of the z-value with moisture content: Dr(140 °C) = 150.07 − 290.73w + 269w2 (min); z = 12.14 + 22.99w (°C) and showed the applicability of D-optimal designs for determining kinetic parameters in complex situations, with limited experimental requirements. The dependence of the rate constants with water content could not be described by the WLF model in qualitative terms, although in absolute values this model could be used with constants similar to those expected from glass transition theory. The thermodynamic analysis of the results showed a good application of the compensation theory in the whole range of water contents.

Cross-cultural adaptation and validation of measures are necessary to provide evidence-based educational intervention services among children with autism spectrum disorder (ASD) across countries. Language plays an integral role in the cross-cultural adaptation and validation process of measures. Currently, there are limited validated tools in Chinese available to assess special education teachers' skills in functional behavior assessments and interventions in Mainland China to effectively support students with ASD. This study aimed to validate a Chinese version of the Skills and Needs Inventories in Functional Behavior Assessments and Interventions (SNI-FBAI-CN) in mainland China. The SNI-FBAI, originally developed and validated in Singapore, in the English language, was translated, culturally adapted, and then administered to 239 special education teachers in two schools for children with ASD in China. Results show that the SNI-FBAI-CN has a three-factor structure (i.e., skills in behavioral assessment, skills in behavioral interventions, and needs for training) that fits the data well, with good reliability for the overall scale, as well as the three subscales. Partial measurement invariance was established between the Chinese and the original Singapore samples, providing additional construct validity evidence for this tool. Limitations of this study and directions for future research are discussed.

The philosophy of Rudolf Steiner’s Anthroposophy, fundamental to Waldorf education, provides an alternative view on education to that in the non-western world. The article illustrates a rhizomatic, informal diffusion of ‘alternative education’ in contrast to ‘policy borrowing’ in education, reporting how Waldorf education and Anthroposophy are regarded and operated in an East Asian context. An initial exploratory study of this provides insider perspectives of ‘knowledgeable’ practitioners in Waldorf early childhood centres in East Asia, regarding their understanding and practices of Anthroposophy and its three key concepts: the Four Temperaments; the Seven-Year [development] cycle; and the Twelve Senses. Participants identified key features of Waldorf education: holistic development of the child; nature relatedness; modelling and imitation; and contextualisation and localisation. Many features of Waldorf education ran counter to significant values and practices in schooling in the local culture. The paper indicates how to reconcile these, and makes recommendations for further research.

This study examines how specific variables such as age, first language, nationality, school grade and socioeconomic status (SES) affect the comprehensibility of second language (L2) speech in 92 second/non-native language learners. Comprehensibility refers to the degree of speech understanding. Fluency, rhythm, grammatical features and word stressing are concurrent factors for the listening comprehension (and the listener comprehensibility) mainly in L2 context. Research evidence focused the quality and differences of speech samples produced by the L2 learners and the comprehensibility rated by native speakers. In reverse scenario there is less evidence on the judgment of L2 learners for speech samples produced by native speakers. In this study we analysed if the comprehensibility ability of 92 young Portuguese L2 learners differ in the following conditions: age, nationality, home language, school grade, proficiency and socioeconomic status. Speech (one text) was recorded by a native speaker and was judged by L2 speakers using 1-5 Likert scale for comprehension difficulty. Main results showed that neither age nor home language had influence for comprehensibility, but socioeconomic, nationality and grades accounted for statistical differences between the groups tested. Also, data suggested that phonetic features are more likely important for the beginner in second language learning compared to the semantic features of speech that heavily depend on vocabulary domain.

本文梳理聖多瑪斯去世至1323年列聖品之間，發生的圍繞其思想權威性的爭議與演變。在這近五十年中，多瑪斯思想的權威性在不斷的爭議與回應中逐漸形成，其中尤其針對他運用亞里士多德的哲學來闡釋天主啟示，及對貧窮勸諭的理解所衍生的論辯。作者指出，以道明會會士為 主的神學家致力於以多瑪斯思想為基點，回應各種反對多瑪斯思想的挑戰，過程中逐漸形成了具有統一性的多瑪斯學派，加以教會內各種歷史性因素，都促成了多瑪斯在1323年7月的亞維農被列入聖品。