Abstract: A method of modifying the growth of plant roots is provided in which the roots are grown in proximity to a membrane from which water is released during the growth of the roots, wherein the membrane is a hydrophobic porous membrane or a hydrophilic non-porous membrane. The method may also be used to collect materials exuded from plant roots by growing the plant roots in a growing medium that is surrounded by a membrane so that moisture is released into the growing medium from the membrane while materials exuded from the plant roots are retained within the growing medium by the membrane, wherein the membrane is a hydrophobic porous membrane or a hydrophilic non-porous membrane.

Abstract: The present invention relates to the use of a hydrophilic membrane to provide by the process of pervaporation through the membrane water suitable for agricultural irrigation, industrial use, hydrating or rehydrating of food or agricultural or pharmaceutical compositions. The present invention also relates to a water purification apparatus which includes the hydrophilic membrane, comprising one or more layers of hydrophilic polymers, to purify water which may contain suspended or dissolved impurities and solids, including but not limited to seawater, brackish water and other kinds of polluted water.

Abstract: A safety system for a vehicle has a number of airbags (100-106) typically sited within a recess (108) in paneling of a vehicle (V). To avert the possibility of extensive damage caused by an impact, the airbags are selectively deployed. Each airbag (100-106) has a multi-chambered structure (118-122). The multi-chambered structure of each airbag is further arranged such that the chambers are rupturable separately from one another and are not of a vented type. More preferable, the individual chambers (118-122) are rupturable at different pressures whereby an airbag as a whole provides a cascade of energy absorbing impacts.

Abstract: A display system for motor vehicles provides an array of lamps at the rear of a subject vehicle to provide an indication of the state of motion of the subject vehicle to the driver of a following vehicle. In a first mode of operation, the display indicates a level of warning dependent upon the rate of deceleration of the subject vehicle, the level of warning being determined by deceleration thresholds which are variable in dependence upon the measured speed of the subject vehicle. In a second mode of operation, the lamps provide an indication of the subject vehicle being stationary or near stationary as determined by comparing the measured speed with a threshold speed. An animate display is created by illuminating the lamps and sequentially deactuating selected pairs of lamps to create a pattern cyclically moving semetrically outwardly from the centre of the row. The display is discontinued when the speed of the subject vehicle exceeds a second threshold defined independently of the first threshold speed.

Abstract: The state of motion of a motor vehicle is indicated to a driver of a following vehicle by employing an array of lamps. The state of motion is determined by sensing vehicle velocity, deceleration being measured either directly via a transducer or being derived from measured velocity. When the subject vehicle is determined to be stationary, the lamps are illuminated in a time dependent sequence to produce an animated visual display in which the lamps are illuminated and selected pairs of lamps are sequentially de-actuated to provide a pattern cyclically moving outwardly from the center to both left and right ends of the array. The approach of the following vehicle to within a pre-set distance of the stationary vehicle is sensed and triggers a change in the display to a static visual display in which an outer pair of lamps remain illuminated. During deceleration, the level of deceleration is indicated by illuminating progressively more lamps with increasing deceleration.

Abstract: A display system for motor vehicles provides an array of lamps at the rear of a subject vehicle to provide an indication of the state of motion of the subject vehicle to the driver of a following vehicle. In a first mode of operation, the display indicates a level of warning dependent upon the rate of deceleration of the subject vehicle, the level of warning being determined by deceleration thresholds which are variable in dependence upon the measured speed of the subject vehicle. In a second mode of operation, the lamps provide an indication of the subject vehicle being stationary or near stationary as determined by comparing the measured speed with a threshold speed. An animate display is created by illuminating the lamps and sequentially deactuating selected pairs of lamps to create a pattern cyclically moving semetrically outwardly from the center of the row. The display is discontinued when the speed of the subject vehicle exceeds a second threshold defined independently of the first threshold speed.

Abstract: A vehicle display system has a stationary detector and an indicator, which form a stationary vehicle detection apparatus being operative to produce an indicator signal which is indicative of the vehicle being stationary. The vehicle display system also has a vehicle deceleration detector and an indicator. The vehicle deceleration detector measures the magnitude of deceleration of a vehicle and generates a signal to drive the indicator and thereby generate a display indicative of the magnitude of vehicle deceleration. The vehicle deceleration detector is independent of the vehicle braking system. In one embodiment, the indicator is an array of lamps and the stationary vehicle indicator signal is an inanimate display. One embodiment has an additional ranging device that detects a trailing vehicle within a predetermined distance of the vehicle employing the ranging device. The ranging device may be used to initiate a change of the display generated by the vehicle display system.