Abstract: A new system for negative pressure wound therapy is described. The system includes a patient tube set connecting the wound dressing to the suction container. The patient tube set provides separate channels for applying suction to the wound site and sensing the therapeutic pressure at the wound site. A restrictor valve may also be included in order to introduce a small air leak into the system to prevent occlusions in the patient tube set.

Abstract: A new system for negative pressure wound therapy is described. The system includes a patient tube set connecting the wound dressing to the suction container. The patient tube set provides separate channels for applying suction to the wound site and sensing the therapeutic pressure at the wound site. A restrictor valve may also be included in order to introduce a small air leak into the system to prevent occlusions in the patient tube set.

Abstract: A new system for negative pressure wound therapy is described. The system includes a patient tube set connecting the wound dressing to the suction container. The patient tube set provides separate channels for applying suction to the wound site and sensing the therapeutic pressure at the wound site. A restrictor valve may also be included in order to introduce a small air leak into the system to prevent occlusions in the patient tube set.

Abstract: Techniques involving the generation of signals at particular frequencies are disclosed. For instance, an apparatus may include an oscillator module, a synthesizer module, and a control module. The oscillator module produces an oscillator signal having a first frequency. From the oscillator signal, the synthesizer module produces an output signal having a second frequency. A frequency multiplier corresponds to the first and second frequencies. The control module selects the first frequency and the frequency multiplier such that a difference between the second frequency and a nearest integer multiple of the first frequency is greater than a predetermined threshold. As a result, reductions in spurious outputs may be achieved.

Abstract: Techniques involving the generation of signals at particular frequencies are disclosed. For instance, an apparatus may include an oscillator module, a synthesizer module, and a control module. The oscillator module produces an oscillator signal having a first frequency. From the oscillator signal, the synthesizer module produces an output signal having a second frequency. A frequency multiplier corresponds to the first and second frequencies. The control module selects the first frequency and the frequency multiplier such that a difference between the second frequency and a nearest integer multiple of the first frequency is greater than a predetermined threshold. As a result, reductions in spurious outputs may be achieved.

Abstract: A method of removing metal from a metal-containing substrate is provided. The method comprises (1) providing modified plants having an improved metal accumulating capability compared to unmodified plants by virtue of an increase in the concentration of histidine within the modified plants and (2) maintaining at least one such modified plant on the metal containing substrate under conditions such that the modified plant accumulates the metal from the substrate. The modified plant can be genetically engineered so as to be capable of increased production of histidine. Further, the increase in histidine concentration within the modified plants can also be achieved by administering a formulation comprising an effective concentration of histidine to the plants. A recombinant vector capable of transforming selected plant cells to augment the concentration of histidine in the plant cell, and a plant cell, plant cell culture or transgenic plant transformed with such a vector is also disclosed.

Abstract: Materials and methods for removing metal pollutants from metal-containing substrates, particularly soil environments, using plants modified so as to contain an increased concentration of the amino acid histidine responsible for metal uptake and tolerance.