Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"ploughs"”.
-
The performance of pipeline ploughs
Pipeline ploughs are commonly used to bury offshore pipelines for their protection from loading by currents, damage from fishing trawler vessels and to provide thermal insulation to the line allowing the product to flow more efficiently. The rate of progress of pipeline ploughs in sand is …
-
The effect of reinforcing soil inclusion on offshore pipeline ploughs
The installation of pipelines on the seabed is a vital part of the oil and gas industry as they allow the safe transfer of oil and gas between oil and gas fields, rigs and countries. It is important to install pipelines as efficiently as possible as it costs hundreds of thousands of pounds per day …
-
Cultivating Treaty Relationships: The Significance of the Cows and Ploughs Clauses for the Numbered Treaties
The modern interpretation and implementation of historic treaty promises is an ongoing opportunity for relationship-building in Canada that includes working to fulfill the spirit and intent of the originating formal agreements between the Crown and First Nations. This thesis analyzes the …
-
The impact of agricultural modernization on women's activities
… possible to open up more land due to the use of ploughs and tractors. This means more time and labour is needed for hoeing, planting, cultivation and harvesting of large fields. In the absence of hired labour, this places more work on women who provide much of the labour needed for these tasks. …
-
The impact of agricultural modernization on women's activities
… possible to open up more land due to the use of ploughs and tractors. This means more time and labour is needed for hoeing, planting, cultivation and harvesting of large fields. In the absence of hired labour, this places more work on women who provide much of the labour needed for these tasks. …
-
Rackwick - A study into its role in the development of contemporary art and culture in Orkney
… including the poem cycle, Fishermen with Ploughs, published in 1971. The painter Sylvia Wishart adopted a home in Rackwick in the early 1960s and produced a series of remarkable paintings over the following decade. The composer Peter Maxwell Davies lived in Rackwick between 1974and 1998, …
-
THREE ESSAYS ON THE ECONOMICS OF SMALLHOLDER AGRICULTURE IN AFRICA: LABOUR ALLOCATION, ADOPTION OF CONSERVATION AGRICULTURE AND CO-OPERATIVE PARTICIPATION
… farm implements, such as controlling ox-drawn ploughs, while women assume manual tasks such as weeding or fertilizer application. Overall, women work more than men, particularly when they are under a female-headed household. These results suggest that social norms are at play. Regarding the …
-
Ironworking in late medieval Ireland, c. AD. 1200 to 1600
… iron. Axes were needed for clearing woodland, ploughs for turning the soil, saws for wooden buildings and hammers and chisels for the stone ones, all of which could not realistically have been made from any other material. The many battles, waged with ever increasingly sophisticated weaponry, …
-
Investigation of the critical specific gravity for cables and pipelines during various backfilling and installation processes
Embedment of pipeline and cables in the seabed is achieved to protect them from issues such as loading by currents, damage from fishing trawler vessels and to provide thermal insulation. Depending on the type of soil and on financial and operational constraints, the embedment of pipelines/cables …