Abstract: A power toothbrush (10) is disclosed comprising a motor (12) for driving a brush head (15) of the power toothbrush and a controller (20) responsive to an operating mode selection signal and arranged to control said motor. The controller comprises a timer (22) for timing a total duration of a tooth brushing session with said power toothbrush and is adapted to, in a feedback mode of operation, calculate an average total duration of a tooth brushing session based on stored prior tooth brushing session times; define a target value based on the calculated average total duration and cause the generation of a sensory output during a tooth brushing session upon its duration reaching the target value to encourage the user to carry on brushing. Also disclosed is a method of evaluating tooth brushing session data generated by such a power toothbrush, a computer program product for implementing such a method, an electronic device adapted to implement such a method and an oral hygiene kit.

Abstract: The invention provides cropping systems for managing weeds in crop environments. The cropping systems comprise, in one embodiment, transgenic plants that display tolerance to an auxin-like herbicide such as dicamba. Method for minimizing the development of herbicide resistant weeds are also provided.

Abstract: The invention provides cropping systems for managing weeds in crop environments. The cropping systems comprise, in one embodiment, transgenic plants that display tolerance to an auxin-like herbicide such as dicamba. Method for minimizing the development of herbicide resistant weeds are also provided.

Abstract: The invention provides cropping systems for managing weeds in crop environments. The cropping systems comprise, in one embodiment, transgenic plants that display tolerance to an auxin-like herbicide such as dicamba. Method for minimizing the development of herbicide resistant weeds are also provided.