The first-order transformation from triangular to collinear antiferromagnetic structure (AF-AF transformation) has been investigated in the Mn3Pt1−xRhx and Mn3+yPt1−y systems by x-ray diffraction and magnetic methods. At the AF-AF transformation temperature Tt a discontinuous change in the lattice parameter is observed with a magnitude depending on concentration but with always the same lattice parameter value of the collinear phase. This implies the existence of a critical lattice parameter value for the AF-AF transformation. Below the Néel temperature TN an anomaly in the thermal expansion occurs indicating exchange interactions dependent on the interatomic separation. This anomaly differs in sign for the collinear-paramagnetic and triangular-paramagnetic transitions. The susceptibility shows an abrupt change at Tt and a maximum at TN in the triangular phase. No maximum occurs for the collinear phase. The observed transition temperatures are in agreement with the earlier neutron diffraction data.
The project MoVe IT! (www.moveit-fp7.eu), funded by the Seventh Framework Programme of the European Union, was focussed on modernisation of inland waterway vessels by retrofitting. In order to stimulate an implementation of the results by the industry, visualization of the positive impacts was realised by a set of vivid demonstrators. In this paper, the demonstrations by simulators for a single screw motor cargo vessel of the type Johann Welker are described.The motion simulations are carried out by a custom made (for inland vessels developed) computer program, which use common naval architect force calculation algorithms and a new approximation theory for added masses.The simulator demonstrations comprise descriptions and visualisations of ship lengthening, application of different rudder and a new propulsion device. Five different cases are examined, the original vessel and four retrofit options.First retrofit variant is the lengthened vessel with original rudder and propeller. Other two analysis are performed changing only the rudder system. In fourth simulator demonstration the original propeller is changed to a pump propeller (a novel propulsion device).The environment are in the simulator demonstrations: constant draught of the vessel, and calm, infinite deep waterway.As results of simulator demonstrations the effects on fuel consumption and manoeuvrability are discussed in the paper.
The project MoVe IT! (www.moveit-fp7.eu), funded by the Seventh Framework Programme of the European Union, aims at a modernisation of inland waterway vessels with focus on retrofitting of existing vessels and technology transfer from new buildings and other transport modes. The topics of the project refer to the improvement of energy efficiency and environmental behaviour of inland waterway vessels, as well as the implementation of alternative energy sources to gasoil. Environmental assessment of various retrofit options is one major objective of the MoVe IT! project. The analysis is carried out for five vessels, comprising a container vessel, three pushers and a motor cargo vessel being operated together with a lighter. In this paper only the analysis of this last vessel is presented. The effects of the different retrofit solutions to be applied in this vessel are taken into account by the resulting reduction of the fuel consumption or directly the respective emissions in per cent. To obtain a wider picture, the emissions referred to tkm are compared with the ones of road transport carried out with trucks complying with emissions standards EURO III up to Euro VI, as well as the East European emission standard (EE).
The reasons for choosing or promoting a certain way of transporting goods are dependent on a multitude of factors. Shippers will be interested in reliable logistics and low cost, while authorities are in general more concerned with relieving congestion and minimizing the environmental impact of transport in general, while accident-free transport is in the interest of all parties involved. Historically, many analysis methods have been developed that include one or more of the above factors, both for transport and non-transport purposes. For the European funded 6th framework project CREATING however, aims to achieve an integrated approach to the assessment of transport, focused on intermodal chains at a micro level, which required highly specific input data which was not readily available from literature. In order to solve this, the authors have joined forces: Delft University developed a model that determines transport cost and emissions related to intermodal transport chains, based on the technical and operational aspects of the transport means utilized, while Budapest University developed a method to measure logistic performance of specific transport chains and the University of Liège developed a multi-criteria decision aiding model that can translate values obtained into a single performance indicator. The approach developed by the authors is demonstrated by means of one of the cases under evaluation in the CREATING project.
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