Transparent conductive ZnO films play an important role in nano science and nanotechnology. Many methods have had various successes in preparing ZnO. In this contribution, we present some results from using a pulsed spray method and subsequent annealing in a hydrogen atmosphere for the preparation of transparent conductive ZnO films. The performances of ZnO produced by using various precursors and in various technology conditions were investigated. We attained ZnO films with sheet resistances below 100 Ω and an average transparency of about 80 % in the visible region of the light spectrum. Those values are of the same magnitude as ones prepared by using other methods. The mechanism of annealing effect in a hydrogen environment is discussed.
ESL team teaching (TT) often occurs between native English-speaker (NES) teachers and non-native English-speaker (NNES) teachers in nursery schools and secondary schools in some countries such as Japan, Hong Kong, Taiwan, and Nigeria as a way of bringing authentic language input to EFL classrooms and enhancing the quality of teaching and learning English. Up to now, no research on TT in Vietnam's context has been found. This paper reports on a case study on TT of 3 Vietnamese English teachers teaching a tertiary level English writing class, and its aim is to discover both the students' and the teachers' attitudes towards TT using a combination of qualitative and quanti-UNITAS NGUyeN QUANG TIeN: TeAm-TeAchING hindrances (e.g., inferiority complex, lack of time and commitment, and fear of challenges and judgment). Thus, TT should be implemented on a voluntary basis for the sake of professional development.
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