title: Feasibility of Harvesting Power To Run A Domestic Water Meter Using Streaming Cell Technology

authors: Jones, Mark Hedley

abstract: We investigate the possibility of using streaming cells as a means of harvesting energy from the town water supply. We measure the electrical power developed from streaming cells using tap water as a working fluid. We estimate the amount of energy available from a typical domestic household based on water usage data. We estimate the amount of energy required to operate a simple data logger and transmitter. From these estimates we calculate the required efficiency and physical form of a streaming cell energy converter. We comment on the feasibility of using streaming cell technology as a means of harvesting energy from a domestic water supply.

text: Feasibility of Harvesting Power To Run A Domestic Water Meter Using Streaming Cell Technology We investigate the possibility of using streaming cells as a means of harvesting energy from the town water supply. We measure the electrical power developed from streaming cells using tap water as a working fluid. We estimate the amount of energy available from a typical domestic household based on water usage data. We estimate the amount of energy required to operate a simple data logger and transmitter. From these estimates we calculate the required efficiency and physical form of a streaming cell energy converter. We comment on the feasibility of using streaming cell technology as a means of harvesting energy from a domestic water supply.

year: 2014

title: Influence of Potamogeton crispus growth on nutrients in the sediment and water of Lake Tangxunhu

authors: Mi, W. J.

subjects: submerged macrophyte

abstract: An incubation experiment was performed on Potamogeton crispus (P. crispus) using sediment collected from Lake Tangxunhu in the center of China, in order to determine the effects of plant growth on Fe, Si, Cu, Zn, Mn, Mg, P, and Ca concentrations in the sediments and overlying waters. After 3 months of incubation, Ca, Mg, and Si concentrations in the water column were significantly lower, and P and Cu concentrations were significantly higher than in unplanted controls. The effect of P. crispus growth on sediment pore waters and water-extractable elements varied. Concentrations of Ca, Mg, Si, Fe, Cu, and Zn were significantly higher, and P was significantly lower, than in pore waters of the control. Water-extracted concentrations of Fe, Mg, and Si in the sediments were lower, and P was higher, than in the control. Presence of P. crispus generally enhanced concentration gradients of elements between pore waters and overlying waters but not for P. The growth of P. crispus was associated with an increase in water pH and formation of root plaques, resulting in complex effects on the sediment nutritional status.

text: Influence of Potamogeton crispus growth on nutrients in the sediment and water of Lake Tangxunhu An incubation experiment was performed on Potamogeton crispus (P. crispus) using sediment collected from Lake Tangxunhu in the center of China, in order to determine the effects of plant growth on Fe, Si, Cu, Zn, Mn, Mg, P, and Ca concentrations in the sediments and overlying waters. After 3 months of incubation, Ca, Mg, and Si concentrations in the water column were significantly lower, and P and Cu concentrations were significantly higher than in unplanted controls. The effect of P. crispus growth on sediment pore waters and water-extractable elements varied. Concentrations of Ca, Mg, Si, Fe, Cu, and Zn were significantly higher, and P was significantly lower, than in pore waters of the control. Water-extracted concentrations of Fe, Mg, and Si in the sediments were lower, and P was higher, than in the control. Presence of P. crispus generally enhanced concentration gradients of elements between pore waters and overlying waters but not for P. The growth of P. crispus was associated with an increase in water pH and formation of root plaques, resulting in complex effects on the sediment nutritional status.

year: 2008

title: Maori thinking with a dead white male: Philosophizing in the realm of Novalis

authors: Mika, Carl Te Hira

subjects: Novalis

abstract: In this paper I shall discuss my experiences of referring to Novalis in the context of Maori postcolonialism and metaphysical philosophy. As with other methods of research, from a Maori perspective one always alights on and then carries the effects of the philosopher that stands behind the method, whether the philosopher is silent or explicit. This important onto-epistemological interaction, in a general sense, acknowledges for the indigenous person that one is always ‘within’ the world and not detached from it. The maligned dead white male hence unavoidably becomes the highly constructive, living impulse behind what is to become fresh and innovative indigenous thinking.

text: Maori thinking with a dead white male: Philosophizing in the realm of Novalis In this paper I shall discuss my experiences of referring to Novalis in the context of Maori postcolonialism and metaphysical philosophy. As with other methods of research, from a Maori perspective one always alights on and then carries the effects of the philosopher that stands behind the method, whether the philosopher is silent or explicit. This important onto-epistemological interaction, in a general sense, acknowledges for the indigenous person that one is always ‘within’ the world and not detached from it. The maligned dead white male hence unavoidably becomes the highly constructive, living impulse behind what is to become fresh and innovative indigenous thinking.

year: 2014