title: Simultaneous estimation of chlorophyll a and lipid contents in microalgae by three-color analysis

authors: Su, Chia-Hung

subjects: microalgae

abstract: A method of rapid determination of chlorophyll a and lipid contents of microalgae based on colorimetric analysis of the digital images of the microalgae is proposed. The color variation of microalgae during cultivation is evaluated by the brightness of the three primary colors (red, green, and blue). The brightness values of the three primary colors are modeled as two linear correlation functions (RGB model) for microalgal chlorophyll a and lipid contents, respectively. The chlorophyll a and lipid contents predicted by the proposed model are compared with that determined by the standard methods. The good agreement of the model predictions with experimental results is demonstrated with a squared correlation coefficient (R2) of 0.99 for chlorophyll a and lipid. The reliability of the RGB model was verified in real cultivations of the microalgae in a photobioreactor. Growth dynamics, contents of chlorophyll a and lipid corresponded very well with previously reported studies.

text: Simultaneous estimation of chlorophyll a and lipid contents in microalgae by three-color analysis A method of rapid determination of chlorophyll a and lipid contents of microalgae based on colorimetric analysis of the digital images of the microalgae is proposed. The color variation of microalgae during cultivation is evaluated by the brightness of the three primary colors (red, green, and blue). The brightness values of the three primary colors are modeled as two linear correlation functions (RGB model) for microalgal chlorophyll a and lipid contents, respectively. The chlorophyll a and lipid contents predicted by the proposed model are compared with that determined by the standard methods. The good agreement of the model predictions with experimental results is demonstrated with a squared correlation coefficient (R2) of 0.99 for chlorophyll a and lipid. The reliability of the RGB model was verified in real cultivations of the microalgae in a photobioreactor. Growth dynamics, contents of chlorophyll a and lipid corresponded very well with previously reported studies.

year: 2008

title: Joseph Campbell and his thermo-hyperphoric process

authors: Hart, Philip

abstract: Joseph Campbell was both an Anglican clergyman and a scientist, with a preference for the latter. Actively involved in educating the masses in scientific matters, and particularly those, like miners, with particular problems to overcome, he was a rather shameless self-publicist, insisting that he could solve most things. Sometimes he was correct, and his practical advice was valued, especially in the last phase of his life.
After Alfred Andrew Lockwood developed a method of treating refractory Te Aroha ore, Campbell modified it, naming it the thermo-hyperphoric process. After inspecting Hauraki mines in 1896, he later settled at Te Aroha to test his process on a large scale. Great success was promised, with claims being made that he could save most of the assay value of the ore in a process superior to any other. Other miners along with geologists were critical of his claims and of his understanding of the geology, but he ignored them. The Montezuma Company was formed in London to fund the development of mines mostly between Tui and Te Aroha, and to erect his plant. Despite his promises, his plant failed, to great local disappointment. 
In addition to trialing ore treatment, Campbell also experimented in other areas. After leaving Te Aroha and focusing for a time on being a clergyman, he settled in North Queensland, remaining there until his death trying to solve a variety of problems facing primary producers, sometimes with success. To the end of his life he claimed to be an expert in a myriad of fields, and ignored all his critics.

text: Joseph Campbell and his thermo-hyperphoric process Joseph Campbell was both an Anglican clergyman and a scientist, with a preference for the latter. Actively involved in educating the masses in scientific matters, and particularly those, like miners, with particular problems to overcome, he was a rather shameless self-publicist, insisting that he could solve most things. Sometimes he was correct, and his practical advice was valued, especially in the last phase of his life.
After Alfred Andrew Lockwood developed a method of treating refractory Te Aroha ore, Campbell modified it, naming it the thermo-hyperphoric process. After inspecting Hauraki mines in 1896, he later settled at Te Aroha to test his process on a large scale. Great success was promised, with claims being made that he could save most of the assay value of the ore in a process superior to any other. Other miners along with geologists were critical of his claims and of his understanding of the geology, but he ignored them. The Montezuma Company was formed in London to fund the development of mines mostly between Tui and Te Aroha, and to erect his plant. Despite his promises, his plant failed, to great local disappointment. 
In addition to trialing ore treatment, Campbell also experimented in other areas. After leaving Te Aroha and focusing for a time on being a clergyman, he settled in North Queensland, remaining there until his death trying to solve a variety of problems facing primary producers, sometimes with success. To the end of his life he claimed to be an expert in a myriad of fields, and ignored all his critics.

year: 2016

title: Action for improvement in our own contexts

authors: Bruce Ferguson, Pip

subjects: education

abstract: Discusses: The pedagogy of Paulo Freire – importance of emancipatory, not ‘banking’, education. Who needs emancipatory education in NZ, and why? Consideration of issues affecting Māori success in the New Zealand education system.

text: Action for improvement in our own contexts Discusses: The pedagogy of Paulo Freire – importance of emancipatory, not ‘banking’, education. Who needs emancipatory education in NZ, and why? Consideration of issues affecting Māori success in the New Zealand education system.

year: 2012