Abstract: The invention relates to a service device for maintenance of a solar panel arrangement, comprising a service unit for maintenance of at least one surface of the solar panel arrangement, a guiding unit for guiding the service unit with respect to the solar panel arrangement, and a driving unit for moving the service unit with respect to the solar panel arrangement, wherein the service unit comprises a first engagement section and a second engagement section, wherein the guiding unit is attachable to the first engagement section, the guiding unit being configured for direct engagement with an edge of the solar panel arrangement, wherein the driving unit is attachable to the second engagement section, and wherein the second engagement section is displaceable with respect to the first engagement section by the driving unit.

Abstract: The invention relates to a service device for maintenance of a solar panel arrangement, comprising a service unit for maintenance of at least one surface of the solar panel arrangement, a guiding unit for guiding the service unit with respect to the solar panel arrangement, and a driving unit for moving the service unit with respect to the solar panel arrangement, wherein the service unit comprises a first engagement section and a second engagement section, wherein the guiding unit is attachable to the first engagement section, the guiding unit being configured for direct engagement with an edge of the solar panel arrangement, wherein the driving unit is attachable to the second engagement section, and wherein the second engagement section is displaceable with respect to the first engagement section by the driving unit.

Abstract: The system disclosed is used to display multiple activities that act on the same component or set of components, such as walls, slabs, columns in a building etc., in a four dimensional (3D plus time) simulation Abstract of the planned or actual design, procurement and construction schedule. The user is provided with flexibility in assigning different colors and effects to different types of activities required for the design, procurement or construction of projects. These assignments provide the information necessary for 4D models to portray the design, procurement, and construction processes more accurately in a 4D simulation and display these processes in a way that is more easily understood by the viewers of 4D models. In the preferred embodiment, this is done by having the ability to overlay text in 2D or 3D on an animated 4D simulation to give the viewer of the 4D model additional information about the activities that are displayed in 4D simulation.

Abstract: The system disclosed is used to display multiple activities that act on the same component or set of components, such as walls, slabs, columns in a building etc., in a four dimensional (3D plus time) simulation Abstract of the planned or actual design, procurement and construction schedule. The user is provided with flexibility in assigning different colors and effects to different types of activities required for the design, procurement or construction of projects. These assignments provide the information necessary for 4D models to portray the design, procurement, and construction processes more accurately in a 4D simulation and display these processes in a way that is more easily understood by the viewers of 4D models. In the preferred embodiment, this is done by having the ability to overlay text in 2D or 3D on an animated 4D simulation to give the viewer of the 4D model additional information about the activities that are displayed in 4D simulation.

Abstract: A foil for use in the vacuum packaging of an article comprises first and second foil layers, the second foil layer being a plastics matrix incorporating a volatile substance such that in use, after evacuation and closing of the package, the volatile substance slowly diffuses into the package, thereby exerting a beneficial influence on the article, for example protection against corrosion.

Abstract: A drilling device for producing drill holes with undercuts comprises a drill having a drill shaft with extending drill blades, a shoulder projecting from the drill shaft, and a guiding sleeve surrounding the drill shaft between the shoulder and the drill blades, the guiding sleeve having two ends provided with openings of different sizes, the guiding sleeve having a sleeve edge which forms a support for the shoulder and a wall abutment for the collar.

Abstract: A unit dose drug control package is provided for the control and accountability of drugs where there is such a need such as narcotics. The package is foldable into a compact, interlocking package, has a plurality of individually removable and identifiable unit drug dose packages, and has a pocket for a product brochure and for returning a unit drug dose package once it has been separated from the package.