5 research outputs found
Development of a glass-ceramic glaze formulated from industrial residues to improve the mechanical properties of the porcelain stoneware tiles
In this research a mixture of 90%wt of industrial residues (recycled soda-lime glass and ashes from a coalpower thermal plant) have been vitriïŹed for their use as ââsecondary raw materialâ. Then, a glaze suspen-sion was prepared to be applied on the porcelain stoneware tile. The tested pieces have been ïŹred by aconventional porcelain cycle at 1180 °C of maximum temperature. The XRD, XRF, SEM/EDS and thedilatometric analysis have been the instrumental techniques used to characterize the material. Finally,an ecological glass-ceramic glaze perfectly ïŹtting on porcelain ceramic tile has been produced, exhibitinga unique phase, anorthite, which ensures a high ïŹexural strength (around 96 MPa) and a signiïŹcantVickers microhardness of 250 GPa, improving the mechanical properties of a conventional the porcelainceramic tile
Corpora as open educational resources for language teaching
Corpora, large electronic collections of texts, have been used in language teaching for several decades. Also known as DataâDriven Learning (DDL), this method has been gaining popularity because empirical research has consistently shown its effectiveness for learning. However, corpora are still underutilized, especially with learners of languages other than English, at lower proficiency levels, and in nonâuniversity contexts. This is regrettable because DDL has a great potential for developing modular flipped content, especially for hybrid, remote, and online courses. This article first provides an overview of DDL applications and findings of empirical research. Next, it outlines obstacles to wider DDL implementation as well as available and possible solutions. Corpus user guides and exercise collections tied to specific corpora are discussed as one promising direction, and an example of such new open educational resources for teaching German is presented. The article concludes with a discussion of implications and future directions