Common crossing rails are subjected Sluice Mat to a rapid deterioration of the rolling surface due to a dynamic loading of trains.The present study is devoted to an experimental study of the displacement and rail strain measurements in the common crossing.The experimental measurements were carried out for two stiff common crossings under the dynami
ABSTRACT Natural communities are dynamic systems in time and space.The spatial distribution of plants and animals tends to coincide with the availability of resources needed for the survival and reproduction of each species.Natural treefall gaps offer a number of resources that influence the distribution of birds within the forest.We compared the u
Large numbers of harbor seals (Phoca vitulina) use habitat in tidewater glaciers in Alaska for pupping, breeding, and molting.Glacial fjords are also popular tourist destinations; Waste Disposer however, visitation by numerous vessels can result in disturbance of seals during critical life-history phases.We explored factors affecting haul-out behav