title: Predicting chitosan particle size produced by electrohydrodynamic atomization

authors: Hu, Jung-Feng

subjects: chitosan

abstract: The effect of processing variables on the size of chitosan nanoparticles produced by electrohydrodynamic atomization was investigated. The size was strongly affected by process variables such as surface tension, conductivity and flow rate of chitosan solution, applied voltage and distance between the electrodes. A simple scaling law to quantitatively correlate the droplet size and process variables was developed by dimensional analysis and used to predict the diameter of particles produced under a given set of conditions. The model predictions agreed reasonably well with the experimental results.

text: Predicting chitosan particle size produced by electrohydrodynamic atomization The effect of processing variables on the size of chitosan nanoparticles produced by electrohydrodynamic atomization was investigated. The size was strongly affected by process variables such as surface tension, conductivity and flow rate of chitosan solution, applied voltage and distance between the electrodes. A simple scaling law to quantitatively correlate the droplet size and process variables was developed by dimensional analysis and used to predict the diameter of particles produced under a given set of conditions. The model predictions agreed reasonably well with the experimental results.

year: 2012

title: Zero Waste Education: An evaluation of an environmental education programme

authors: Jones, Benjamin

subjects: environmental

abstract: The Ministry of Education's Guidelines for Environmental Education in New Zealand Schools (1999) names five aims of what environmental education should achieve in New Zealand. These aims are for students to develop: "awareness and sensitivity to the environment and related issues; knowledge and understanding of the environment and the impact of people on it; attitudes and values that reflect feelings of concern for the environment; skills involved in identifying, investigating, and problem solving associated with environmental issues; and a sense of responsibility through participation and action as individuals, or members of groups whanau, or iwi, in addressing environmental issues" (Ministry of Education, 1999, p. 9).
The research reported in this thesis describes the evaluation of the Zero Waste Education (ZWE) programme against these aims, as well as the goals of the programme itself. The ZWE programme is based in Tauranga and operates in primary schools around New Zealand delivering waste education to students. 
This research was conducted within the interpretivist paradigm. Data was collected using the case study method in one school in the Bay of Plenty, New Zealand, through interviews, parent questionnaires, student questionnaires, observations, and a focus group. Participants in this case study were students who had gone through the ZWE programme, their teachers and other members of the school staff, the ZWE educator, and the parents of the students who went through the programme. Data was organised by initially transcribing interview data, entering student questionnaire and parent questionnaire data into MS Excel spreadsheets and typing observational data. The organised data was then coded in a deductive approach based on the desired outcomes of EE and ZWE, and analysed for common themes that emerged in relation to these outcomes. 
The findings of this study indicate that the ZWE programme appears to be meetingits desired goals in general terms, as well as those of environmental education as a whole. The findings appeared to show a raise in student’s knowledge of composting and worms, as well as a raise in attitudes and awareness towards the waste issue. The findings also appeared show a level of intergenerational transfer and action taking occurring, with a few participating households reporting a change in their waste management practices and teachers commenting on observed actions of the students.
One key recommendation to emerge from this study is for ZWE to further tighten its goals and discuss these with educators in order to enhance consistent achievement of the goals. Another recommendation discusses ways to further develop the action taking skills of participating students through the action competence approach and to ensure that these action taking skills have enough of an impact to last in the long term.

text: Zero Waste Education: An evaluation of an environmental education programme The Ministry of Education's Guidelines for Environmental Education in New Zealand Schools (1999) names five aims of what environmental education should achieve in New Zealand. These aims are for students to develop: "awareness and sensitivity to the environment and related issues; knowledge and understanding of the environment and the impact of people on it; attitudes and values that reflect feelings of concern for the environment; skills involved in identifying, investigating, and problem solving associated with environmental issues; and a sense of responsibility through participation and action as individuals, or members of groups whanau, or iwi, in addressing environmental issues" (Ministry of Education, 1999, p. 9).
The research reported in this thesis describes the evaluation of the Zero Waste Education (ZWE) programme against these aims, as well as the goals of the programme itself. The ZWE programme is based in Tauranga and operates in primary schools around New Zealand delivering waste education to students. 
This research was conducted within the interpretivist paradigm. Data was collected using the case study method in one school in the Bay of Plenty, New Zealand, through interviews, parent questionnaires, student questionnaires, observations, and a focus group. Participants in this case study were students who had gone through the ZWE programme, their teachers and other members of the school staff, the ZWE educator, and the parents of the students who went through the programme. Data was organised by initially transcribing interview data, entering student questionnaire and parent questionnaire data into MS Excel spreadsheets and typing observational data. The organised data was then coded in a deductive approach based on the desired outcomes of EE and ZWE, and analysed for common themes that emerged in relation to these outcomes. 
The findings of this study indicate that the ZWE programme appears to be meetingits desired goals in general terms, as well as those of environmental education as a whole. The findings appeared to show a raise in student’s knowledge of composting and worms, as well as a raise in attitudes and awareness towards the waste issue. The findings also appeared show a level of intergenerational transfer and action taking occurring, with a few participating households reporting a change in their waste management practices and teachers commenting on observed actions of the students.
One key recommendation to emerge from this study is for ZWE to further tighten its goals and discuss these with educators in order to enhance consistent achievement of the goals. Another recommendation discusses ways to further develop the action taking skills of participating students through the action competence approach and to ensure that these action taking skills have enough of an impact to last in the long term.

year: 2014

title: Early childhood teachers partnering with teacher educators to connect children to taiao (the natural world) through place-based learning

authors: Postlewaight, Gillian

abstract: Initial cycles of an action research project brought together local early childhood (ECE) teachers, and tertiary ECE teacher educators, to explore possible uses of the Ōtātara Outdoor Learning Centre (ŌOLC), adjoining the campus at Hawke’s Bay’s Te Aho a Maui Eastern Institute of Technology (EIT), Napier, New Zealand. EIT is situated below Ōtātara Pa, a historic site that holds cultural and historical significance for local Māori, specifically Ngati Pārau Hapū and Ngati Kahungunu Iwi. Education in New Zealand is underpinned by commitment to Te Tiriti o Waitangi (Treaty of Waitangi), ensuring that the principles; partnership, participation and protection of kaupapa Māori are supported through bicultural curricula. Māori holistic perspectives strengthen this focus and shifting understanding that place-based learning authenticates environmental approaches to education and cultural knowledge. During the first meeting, participants walked the hillside site and shared group discussions. From these conversations, the teachers identified three main themes: establishing connections between children and the physical place, new opportunities for teacher learning and challenges to implementing spontaneous teaching and learning in this unique environment. Future cycles of the research will focus on workshops for teachers to address these themes for teachers’ working with children in the space.

text: Early childhood teachers partnering with teacher educators to connect children to taiao (the natural world) through place-based learning Initial cycles of an action research project brought together local early childhood (ECE) teachers, and tertiary ECE teacher educators, to explore possible uses of the Ōtātara Outdoor Learning Centre (ŌOLC), adjoining the campus at Hawke’s Bay’s Te Aho a Maui Eastern Institute of Technology (EIT), Napier, New Zealand. EIT is situated below Ōtātara Pa, a historic site that holds cultural and historical significance for local Māori, specifically Ngati Pārau Hapū and Ngati Kahungunu Iwi. Education in New Zealand is underpinned by commitment to Te Tiriti o Waitangi (Treaty of Waitangi), ensuring that the principles; partnership, participation and protection of kaupapa Māori are supported through bicultural curricula. Māori holistic perspectives strengthen this focus and shifting understanding that place-based learning authenticates environmental approaches to education and cultural knowledge. During the first meeting, participants walked the hillside site and shared group discussions. From these conversations, the teachers identified three main themes: establishing connections between children and the physical place, new opportunities for teacher learning and challenges to implementing spontaneous teaching and learning in this unique environment. Future cycles of the research will focus on workshops for teachers to address these themes for teachers’ working with children in the space.

year: 2023-04-27