Conservation in perspective – farming

Non-Peer Reviewe

Development and Design of ROV Manipulator

The thesis is carried out in collaboration with the student organization UiS Subsea. The primary objective of this thesis is to design and develop a manipulator for the ROV, named YME, using the product development process (PDP). The end goal is to showcase the final product at the MATE ROV Competition 2023. The importance of sustainability has been highlighted in recent years, and this year, MATE ROV Competition focuses on the United Nations Decade of Ocean Science for Sustainable development (2021-2030), and challenge students to contribute to UNs Sustainability goals by seeking sustainable solutions for their projects. The product development process consisted of four phases: planning, concept development, concept generation, and product concept selection. The planning process focused on resource allocation, declaring a mission statement, and establishing a good foundation for the process ahead. Gathering benchmarking information and establishing target specifications was a crucial part of the concept development phase, prior to the concept generation process, as the information and specifications served as a guidance and outline for the concepts to be generated. By a circular economy approach, the reuse of old components within UiS Subsea was evaluated, and potential components were located. The circular economy approach influenced design decisions, and resulted in cost and timeefficiency, and contribution towards sustainability in engineering practices. Concepts were generated for both the manipulator arm and end-effector, and the most promising ones were selected for further development. Eventually one concept for the arm, and one for the end-effector, was selected and further developed through detailed design. Through detailed design, a complete CAD model of the manipulator was made, also material was selected and necessary calculations were performed. The outcome was a three degree of freedom manipulator arm with a rotating end-effector, pitch function, xv and a telescope function. Through prototyping and extensive testing, the design was evaluated and deemed sufficient according to customer needs and target specifications. The outcome of the project was a fully functional ROV Manipulator able to perform all the required MATE tasks, and contributed greatly towards the successful qualification to the 2023 MATE ROV Competition. However, there was room for further improvement and optimization of both the manipulator and the process, and hopefully the manipulator can serve as a foundation for future UiS Subsea manipulator projects.The thesis is carried out in collaboration with the student organization UiS Subsea. The primary objective of this thesis is to design and develop a manipulator for the ROV, named YME, using the product development process (PDP). The end goal is to showcase the final product at the MATE ROV Competition 2023. The importance of sustainability has been highlighted in recent years, and this year, MATE ROV Competition focuses on the United Nations Decade of Ocean Science for Sustainable development (2021-2030), and challenge students to contribute to UNs Sustainability goals by seeking sustainable solutions for their projects. The product development process consisted of four phases: planning, concept development, concept generation, and product concept selection. The planning process focused on resource allocation, declaring a mission statement, and establishing a good foundation for the process ahead. Gathering benchmarking information and establishing target specifications was a crucial part of the concept development phase, prior to the concept generation process, as the information and specifications served as a guidance and outline for the concepts to be generated. By a circular economy approach, the reuse of old components within UiS Subsea was evaluated, and potential components were located. The circular economy approach influenced design decisions, and resulted in cost and timeefficiency, and contribution towards sustainability in engineering practices. Concepts were generated for both the manipulator arm and end-effector, and the most promising ones were selected for further development. Eventually one concept for the arm, and one for the end-effector, was selected and further developed through detailed design. Through detailed design, a complete CAD model of the manipulator was made, also material was selected and necessary calculations were performed. The outcome was a three degree of freedom manipulator arm with a rotating end-effector, pitch function, xv and a telescope function. Through prototyping and extensive testing, the design was evaluated and deemed sufficient according to customer needs and target specifications. The outcome of the project was a fully functional ROV Manipulator able to perform all the required MATE tasks, and contributed greatly towards the successful qualification to the 2023 MATE ROV Competition. However, there was room for further improvement and optimization of both the manipulator and the process, and hopefully the manipulator can serve as a foundation for future UiS Subsea manipulator projects

Development and Design of ROV Manipulator

The thesis is carried out in collaboration with the student organization UiS Subsea. The primary objective of this thesis is to design and develop a manipulator for the ROV, named YME, using the product development process (PDP). The end goal is to showcase the final product at the MATE ROV Competition 2023. The importance of sustainability has been highlighted in recent years, and this year, MATE ROV Competition focuses on the United Nations Decade of Ocean Science for Sustainable development (2021-2030), and challenge students to contribute to UNs Sustainability goals by seeking sustainable solutions for their projects. The product development process consisted of four phases: planning, concept development, concept generation, and product concept selection. The planning process focused on resource allocation, declaring a mission statement, and establishing a good foundation for the process ahead. Gathering benchmarking information and establishing target specifications was a crucial part of the concept development phase, prior to the concept generation process, as the information and specifications served as a guidance and outline for the concepts to be generated. By a circular economy approach, the reuse of old components within UiS Subsea was evaluated, and potential components were located. The circular economy approach influenced design decisions, and resulted in cost and timeefficiency, and contribution towards sustainability in engineering practices. Concepts were generated for both the manipulator arm and end-effector, and the most promising ones were selected for further development. Eventually one concept for the arm, and one for the end-effector, was selected and further developed through detailed design. Through detailed design, a complete CAD model of the manipulator was made, also material was selected and necessary calculations were performed. The outcome was a three degree of freedom manipulator arm with a rotating end-effector, pitch function, and a telescope function. Through prototyping and extensive testing, the design was evaluated and deemed sufficient according to customer needs and target specifications. The outcome of the project was a fully functional ROV Manipulator able to perform all the required MATE tasks, and contributed greatly towards the successful qualification to the 2023 MATE ROV Competition. However, there was room for further improvement and optimization of both the manipulator and the process, and hopefully the manipulator can serve as a foundation for future UiS Subsea manipulator projects

Effect of BHT (Butylated Hydroxytoluene) on the protein value of herring meal for the young rat

The effect of BHT (butylated hydroxytoluene) on the protein quality of herring meal was studied in nitrogen balance experiments with young rats. BHT at the 0.03% level in the meal improved the protein quality of meals produced from small summer herring when it was added after the drying process but was without any effect when it was added before the drying process. BHT had only little effect on the protein quality of meals produced from winter herring. Different production methods of the meals had little effect on the protein quality. Pelleting of the meals seemed to be no advantage, there were indications that the protein quality might be adversely affected by this process

Effects of Heat Treatment on Composition and Nutritive Value of Herring Meal

1. The effect of heat treatment on quality of herring meal has been investigated using a rotating autoclave operated under variable conditions (meal moisture: 1.1% - 41%; meal temperature: 96° C – 132° C; heating time: 0-2 hrs). 2. In terms of proximate chemical analyses all heat treated meals, containing 82.5-85.0% protein on a dry weight basis, would be considered of a very high grade. 3. Short heat treatments at about 125° C appeared to stabilize the lipid phase towards oxidation during storage: After four weeks an unheated reference meal had a carbonyl number of 323 mmol CO/kg fat whereas heat treated meals had values in the range of 74-91 mmol CO /kg fat. Corresponding iodine numbers were on the average 100 g I2/100 g fat for the unheated meal and 120 g I2/100 g fat for heat treated meals. 4. Analyses indicated some slight decrease in amino acids of the herring meals resulting from the heat treatments. 5. No clear correlation was found between available lysine and conditions of heat treatment, but there was a tendency for availability to decrease with increasing moisture content during prolonged heating of meals. 6. During the heat treatments, pepsin digestibility for dry meals dropped to 66% while that for wet meals dropped at most to about 33% with reference to freeze dried meals. 7. Pepsin digestibility was well correlated with values for nutritive criteria obtained in animal feeding tests. 8. Apparent indigestibility of individual amino acids In two selected meals showed some increase due to heat treatment