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101.
Gillian R. Hayes Sen Hirano Gabriela Marcu Mohamad Monibi David H. Nguyen Michael Yeganyan 《Personal and Ubiquitous Computing》2010,14(7):663-680
Interventions to support children with autism often include the use of visual supports, which are cognitive tools to enable learning and the production of language. Although visual supports are effective in helping to diminish many of the challenges of autism, they are difficult and time-consuming to create, distribute, and use. In this paper, we present the results of a qualitative study focused on uncovering design guidelines for interactive visual supports that would address the many challenges inherent to current tools and practices. We present three prototype systems that address these design challenges with the use of large group displays, mobile personal devices, and personal recording technologies. We also describe the interventions associated with these prototypes along with the results from two focus group discussions around the interventions. We present further design guidance for visual supports and discuss tensions inherent to their design. 相似文献
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104.
Lilioara Surdu Ovidiu Iordache Elena Manaila Gabriela Craciun Laurentia Alexandrescu 《纺织学会志》2013,104(11):1426-1433
This paper presents the improvement of the resistance to fungi of some cotton textile materials by treating in the manufacturing process with oxygen plasma and chitosan. Thus, after the weaving and preliminary finishing, the fabrics were cleaned in oxygen plasma atmosphere and after dyeing, have been treated with chitosan solution with concentrations of 1 or 5 g/l, in order to confer them antimicrobial properties. The antimicrobial tests were performed with two fungi: Candida albicans and Tricophyton interdigitale. The obtained antimicrobial effect was considerably higher compared to that of the raw fabrics. The colour resistance of dyed fabrics was not significantly influenced by applying the treatment-based chitosan. 相似文献
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106.
The solid state reaction Cu + Cu2+ → 2Cu+ in CsCuCl3 was studied at 499 K using a cell in which the Cu(II) sample was put between two copper discs. Mass changes, thickness of the product layer and the total electrical resistance of the cell were measured as a function of time, both with and without (spontaneous) applied voltage. 相似文献
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108.
Liviu Sacarescu Mihaela Simionescu Gabriela Sacarescu Valeria Harabagiu 《Journal of Inorganic and Organometallic Polymers and Materials》2013,23(3):621-628
This work presents a solution-phase approach for the “one pot” synthesis of polysilane-gold nanorods. The process starts by the reduction of HAuCl4 to Auo with a solution of poly[diphenylsilane-co-methyl(H)silane] cooled to 4 °C. The formed small Au nanoparticles (5–15 nm diameter) serve further as seeds for the heterogeneous nucleation and anisotropic growth that takes place at 25 °C and yields crystalline needle-like polymer–gold nanostructures. The evolution of the small spherical nanoparticles to nanorods with length/width aspect ratios up to 103 has been proved by UV–Vis spectroscopy, polarized light microscopy and AFM. Further insights on the growth mechanism were obtained by SEM, DLS and TEM. 相似文献
109.
Gabriela E. Viacava Sara I. Roura Mar��a Victoria Ag��ero 《Food Analytical Methods》2011,4(3):307-312
When determining the water status of leafy vegetables with oven-drying techniques, consumption of time and resources is inevitable.
The aim of this work was to evaluate the performance of both relative water content (RWC) and free water and bound water content
(FW–BW) techniques to obtain the water content index (WC) of different leafy vegetables in order to dispense with the traditional
methodology for water content determination. By doing this, not only consumption of time is reduced, but also skilled labor
and laboratory resources. Butterhead lettuces harvested at different growing stages and stored at different postharvest conditions
were evaluated. In all cases, water content values obtained with RWC technique were statistically equivalent to those obtained
with the traditional methodology. Instead, water content values obtained with FW–BW technique were considerably higher than
the original WC. Consequently, using RWC technique data to obtain water content, the time required to determine water status
in butterhead lettuce is reduced by 25%. In addition, fresh plants of swiss chard, akusay (chinese cabbage), and romaine lettuce
were evaluated in order to validate the simplified methodology. Results obtained were similar to those observed for butterhead
lettuce. 相似文献
110.
Magdalena Graczyk-Zajac Gabriela Mera Jan Kaspar Ralf Riedel 《Journal of the European Ceramic Society》2010,30(15):3235-3243
The electrochemical behavior of poly(phenylvinylsilylcarbodiimide)-derived SiCN ceramics as anode material for lithium-ion batteries is reported here for the first time. The novel carbon-rich silicon carbonitride (SiCN) ceramics have been synthesized by the thermal treatment of poly(phenylvinylsilylcarbodiimide) under argon atmosphere at five temperatures, namely 1100, 1300, 1500, 1700 and 2000 °C. The SiCN electrodes were prepared without any conducting additives and were tested in electrochemical two electrodes cell using cyclic voltammetry and galvanostatic techniques. The capacity of the carbon-rich SiCN samples was found to be stable upon galvanostatic cycling and reaches almost 300 mAh/g for the sample prepared at 1300 °C with oxygen as the impurity. The dependence of the microstructure, especially of the crystallinity of the segregated carbon phase and of the oxygen impurities on the electrochemical behavior of the SiCN material, was analysed. At all temperatures of thermolysis, the free carbon phase has been identified as “soft carbon”. 相似文献