Abstract: A system for treating wastewater including at least one water-treatment pathway having at least one wastewater inlet, at least one oxygen-permeable, water-impermeable wall, separating an interior of the pathway from outside air, and at least one treated wastewater outlet and arranged for at least aerobic treatment of the wastewater as it flows from the at least one wastewater inlet to the at least one treated wastewater outlet, at least one wastewater supply conduit, supplying the wastewater to the at least one wastewater inlet of the water-treatment pathway and at least one treated wastewater conduit, supplying treated wastewater from the at least one treated wastewater outlet of the at least one water-treatment pathway.

Abstract: A bacterial fuel cell including a plurality of anodes and a plurality of cathodes in liquid communication with a liquid to be purified, the plurality of anodes and the plurality of cathodes each including a metal electrical conductor arranged to be electrically coupled across a load in an electrical circuit and an electrically conductive coating at least between the metal electrical conductor and the liquid to be purified, the electrically conductive coating being operative to mutually seal the liquid and the electrical conductor from each other.

Abstract: A method of processing a signal pertaining to at least one electrical property of an organ of a subject is disclosed. The method comprises determining a physiological condition of the subject, selecting a frequency band, filtering the signal according to the frequency band, and dynamically adapting the frequency band in response to a change in the physiological condition.

Abstract: A bacterial fuel cell including at least one anode and at least two cathodes in liquid communication with a liquid to be treated, the at least one anode being separated from the at least two cathodes by at least first and second electrically insulating spacers and the at least one anode and the at least two cathodes being electrically connected across an external load and the at least one anode and the at least two cathodes being wound together generally in a spiral configuration together with at least a third electrically insulating spacer.

Abstract: A system for treating wastewater including at least one water-treatment pathway having at least one wastewater inlet, at least one oxygen-permeable, water-impermeable wall, separating an interior of the pathway from outside air, and at least one treated wastewater outlet and arranged for at least aerobic treatment of the wastewater as it flows from the at least one wastewater inlet to the at least one treated wastewater outlet, at least one wastewater supply conduit, supplying the wastewater to the at least one wastewater inlet of the water-treatment pathway and at least one treated wastewater conduit, supplying treated wastewater from the at least one treated wastewater outlet of the at least one water-treatment pathway.

Abstract: A bacterial fuel cell including a plurality of anodes and a plurality of cathodes in liquid communication with a liquid to be purified, the plurality of anodes and the plurality of cathodes each including a metal electrical conductor arranged to be electrically coupled across a load in an electrical circuit and an electrically conductive coating at least between the metal electrical conductor and the liquid to be purified, the electrically conductive coating being operative to mutually seal the liquid and the electrical conductor from each other.

Abstract: A method of processing a signal pertaining to at least one electrical property of an organ of a subject is disclosed. The method comprises determining a physiological condition of the subject, selecting a frequency band, filtering the signal according to the frequency band, and dynamically adapting the frequency band in response to a change in the physiological condition.

Abstract: A method of diagnosis is disclosed. The method comprises: acquiring an absolute component and a phase component of an input signal indicative of an impedance of an organ of a subject; determining baseline blood flow of the subject based on the phase component; determining transient changes in blood flow based on at least the absolute component; and displaying the baseline blood flow and the transient changes in blood flow.

Abstract: A method for diagnosis includes acquiring a physiological signal from a patient (22) during a period of sleep, and segmenting the signal to define a time sequence of quasi-stationary segments, each of the segments having a respective frequency spectrum. Respective levels of membership of the segments in a plurality of frequency states are computed responsively to the respective frequency spectrum. Based on the respective levels of membership, a sleep quality indicator is determined and displayed, responsively to a statistical characteristic of the segments.

Abstract: A method for removal of foam from at least one foam accumulation region in a wastewater treatment facility, the method including causing the foam to flow from the at least one foam accumulation region into at least one foam collector and removing the foam from the at least one foam collector.

Abstract: The present invention provides substances, devices, methods, and kits for photo-sterilization of a root canal, prior to and when performing endodontics, as well as periodically as post-endodontic prophylactic measures. The root-canal filling includes a light-transmitting element, operative as a diffuser, and methods are provided for communicating light to the diffuser, for disinfecting the walls of the root canals, by photo sterilization. The diffuser may be formed of silicone polymers, synthetic fused silica, quartz or the like, and may be surrounded by a light-transmitting sealer. The diffuser may be incorporated with an endodontic post, or a specially designed post, which may be transparent and (or) hollow. In a preferred embodiment, the diffuser is formed of a light transmitting conical shell of Cyclic Olefin Copolymers (COC), filled with a fluid such as air, distilled water, or silicone oil.

Abstract: A method and apparatus for retrofitting existing waste water treatment facilities having at least one existing basin including installing generally vertical partitions at spaced locations in the existing basin in order to divide the existing basin into a plurality of treatment stage regions, installing at least one air lift in each of the plurality of treatment stage regions, loading each treatment stage regions with a quantity of floatable porous particles, supplying waste water to at least one of the plurality of treatment stage regions and allowing the waste water, but generally not the particles, to flow from the plurality of treatment stage regions to at least another of the plurality of treatment stage regions and operating the air lift in each of the plurality of treatment stage regions to provide aerobic waste water flow therein in operative engagement with the floatable porous particles.

Abstract: Methods and systems that (a) adaptively segment a raw data stream(s) of different type biomedical signals; (b) assign attribute values to each segment; (c) determine an attribute domain based on a point corresponding to said segment attribute value; (d) generate a cluster set(s) in said attribute domain that includes a combination of points; (e) obtain a probability of order of appearance of each cluster point, according to its property value; (f) use said probability to update each point's property value; (g) repeat (d) through (f) while varying combinations of points in clusters according to their most updated property values and points derived from additional raw data stream adaptive segmentations; (h) associate at least one updated cluster with a normal/abnormal physiological state based on reference clusters in said domain; and (i) obtain the change probability between normal/abnormal physiological states using said probability of the order of appearance.

Abstract: There is disclosed to a surgical instrument and methods for its use, for cutting tissue that has a positioning tube having a longitudinal axis, a cutting blade, that is at least substantially continuous, typically a ring, and a shaft. The shaft includes a distal end, that typically extends into the cutting blade, and engages the cutting blade in a rotational engagement, so as to confine its position while allowing it to rotate, upon the shaft rotating. At least a portion of the shaft is housed within the positioning tube. A frame is configured for receiving the proximal end of the shaft such that the shaft can rotate while being held in the frame. This reception and retention of the shaft by the frame is such that movement of the frame along the longitudinal axis moves the shaft and the cutting blade along the longitudinal axis. The cutting blade typically includes a sharpened edge, typically at its proximal end.

Abstract: There is disclosed to a surgical instrument and methods for its use, for cutting tissue that has a positioning tube having a longitudinal axis and a distal end including a portion of preset curvature, a cutting blade, that is at least substantially continuous, typically a ring, and a shaft. The shaft includes a distal end, that typically extends into the cutting blade, and engages the cutting blade in a rotational engagement, so as to confine its position while allowing it to rotate, upon the shaft rotating. At least a portion of the shaft is housed within the positioning tube. A frame is configured for receiving the proximal end of the shaft such that the shaft can rotate while being held in the frame. This reception and retention of the shaft by the frame is such that movement of the frame along the longitudinal axis moves the shaft and the cutting blade along the longitudinal axis. The cutting blade typically includes a sharpened edge, typically at its proximal end.

Abstract: A process has been developed to reduce or relieve prostatic obstruction. The steps involved in the TUVOR Process include: 1. Transurethral Incision; 2. De-bulking and Intra-Prostatic Volume Reduction; 3. Intra-prostatic void exclusion and space filling with adhesive and/or therapeutic polymeric materials, alone or in combination with bioactive agents and/or mechanical means for closure; 4. Endourethral compression and prostatic mass remolding; 5. Endourethral Polymer Liner Layer. This liner formed from structurally supportive, yet eventually biodegradable, polymers further bolsters and supports the urethra and peri-urethral tissue during healing, eliminating the need for post-procedure catheter drainage. This step may be optional in specific clinical circumstances. The process is designed to allow outpatient treatment under local anesthesia for BPH.

Abstract: A process has been developed to reduce or relieve prostatic obstruction. The steps involved in the TUVOR Process include: 1. Transurethral Incision; 2. De-bulking and Intra-Prostatic Volume Reduction; 3. Intra-prostatic void exclusion and space filling with adhesive and/or therapeutic polymeric materials, alone or in combination with bioactive agents and/or mechanical means for closure; 4. Endourethral compression and prostatic mass remolding; 5. Endourethral Polymer Liner Layer. This liner formed from structurally supportive, yet eventually biodegradable, polymers further bolsters and supports the urethra and peri-urethral tissue during healing, eliminating the need for post-procedure catheter drainage. This step may be optional in specific clinical circumstances. The process is designed to allow outpatient treatment under local anesthesia for BPH.