Abstract: Device for assisting crawling of an infant (2) on a training surface comprising: - a platform (1) comprising a chest supporting surface for supporting a chest of the infant (2) resting on the platform (1) in a prone position, and - rolling elements (9) rotatably mounted on the platform in such a way they can rotate 360 degrees (1) and arranged to be located between the platform (1) and the training surface, wherein the platform (1) is shaped so that, when the rolling elements (9) are in contact with the training surface, the chest supporting surface of the platform (1) is inclined relative to the training surface, so that the pelvis and the legs of the infant (2) are in contact with the training surface.

Abstract: Device for assisting crawling of an infant (2) on a training surface comprising: —a platform (1) comprising a chest supporting surface for supporting a chest of the infant (2) resting on the platform (1) in a prone position, and —rolling elements (9) rotatably mounted on the platform in such a way they can rotate 360 degrees (1) and arranged to be located between the platform (1) and the training surface, wherein the platform (1) is shaped so that, when the rolling elements (9) are in contact with the training surface, the chest supporting surface of the platform (1) is inclined relative to the training surface, so that the pelvis and the legs of the infant (2) are in contact with the training surface.

Abstract: This invention offers an effective method of inhibiting the growth of toxic bloom algae caused by cyanobacteria Mycrocystis aeruginosa in freshwater environments comprising administering an effective amount of 5,6-dichlorogramine to the freshwater. Also, the invention offers an effective method of inhibiting the growth of toxic bloom algae caused by M. aeruginosa comprising administering an effective amount of 5,6,7-trichlorogramine to the freshwater. Both compounds, 5,6-dichlorogramine and 5,6,7-trichlorogramine, may be administered individually or in combination to the freshwater. Both compounds are individually very potent and only need to be administered at a very low concentration to be effective at inhibiting the growth of M. aeruginosa in freshwater environments. Both 5,6-dichlorogramine and 5,6,7-trichlorogramine are each individually effective at inhibiting M. aeruginosa at low concentrations, between about 0.01 mg/L and about 0.05 mg/L, or more specifically at a concentration of about 0.03 mg/L.