Reducing grain damage in naked oat through gentle harvesting

Selostus: Paljasjyväisen kauran hellävarainen sadonkorjuu

Harvesting strategy and N fertilization influence ¹³⁴Cs uptake by forage plants

Selostus: Korjuuaika ja typpilannoitus vaikuttavat rehukasvien radiocesiumpitoisuuteen

Effects of three harvesting work methods on Harwarder productivity in final felling

Abstract

Long-term impacts of forest harvesting related soil disturbance on log product yields and economic potential in a New Zealand forest

Abstract

Harvesting and transport of root biomass from fast-growing poplar plantations

Abstract

Evaluation of the multicriteria approval method for timber-harvesting group decision support

Abstract

Bayesian estimation of diameter distribution during harvesting

Abstract

Time consumption analysis of the mechanized cut-to-length harvesting system

[Abstract]

Energy harvesting methods for wireless sensor nodes in heavy-duty vehicles

The number of autonomous wireless sensor and control nodes has been increasing rapidly during the last decade. Until recently, these wireless nodes have been powered with batteries, which have lead to a short life cycle and high maintenance need. Due to these battery-related problems, new energy sources have been studied to power wireless nodes. One solution is energy harvesting, i.e. extracting energy from the ambient environment. Energy harvesting can provide a long-lasting power source for sensor nodes, with no need for maintenance. In this thesis, various energy harvesting technologies are studied whilst focusing on the theory of each technology and the state-of-the-art solutions of published studies and commercial solutions. In addition to energy harvesting, energy storage and energy management solutions are also studied as a subsystem of a whole energy source solution. Wireless nodes are also used in heavy-duty vehicles. Therefore a reliable, long-lasting and maintenance-free power source is also needed in this kind of environment. A forestry harvester has been used as a case study to study the feasibility of energy harvesting in a forestry harvester’s sliding boom. The energy harvester should be able to produce few milliwatts to power the target system, an independent limit switch.