Abstract: A system includes a doorbell at an exterior of a premises comprising a doorbell housing, a button, a doorbell wireless transceiver, and a doorbell speaker and doorbell microphone coupled to the doorbell wireless transceiver. The system also includes a smoke detector at an interior of the premises comprising a smoke detector housing, a smoke detector wireless transceiver, and a smoke detector speaker and smoke detector microphone coupled to the smoke detector wireless transceiver. The smoke detector wireless transceiver is configured to be in two-way audio communication with the doorbell wireless transceiver. The two-way audio communication includes transmitting audio from the doorbell microphone to the smoke detector speaker via the wireless transceivers. The two-way audio communication also includes transmitting audio from the smoke detector microphone to the doorbell speaker via the wireless transceivers. In some systems, a second smoke detector is included and in some systems, a control panel is included.

Abstract: A blood clot retraction assay device and methods of measuring whole-blood clot retractive forces during coagulation are described. When placed in proximity to a micro-beam, a blood droplet attaches thereto, applying a force to the micro-beam during clot formation. Using Piezoresistive micro-beams or other Piezoresistive components disposed upon such micro-beams, the device measures retractive force of a blood droplet based upon changes in resistance. The sensitivity of such measurements allows use of small quantities of blood for measurement, between 15 microliters and 300 microliters. The device further permits continuous measurement of coagulation, allowing measurement of distinct reaction, contraction development, and fibrinolysis phases for each blood sample.

Abstract: A method and apparatus for generating droplets with a high level of uniformity in liquid systems that present a low interfacial tension. This method and apparatus utilize the breakup of the dispersed phase in a controlled fashion by periodically varying the pressure that drives the fluids so as to successfully generate emulsions with a good control over the size. The method and apparatus can be used for the formation of simple emulsion or double emulsion where a larger droplet contains one or more smaller droplets.

Abstract: A blood clot retraction assay device and methods of measuring whole-blood clot retractive forces during coagulation are described. When placed in proximity to a micro-beam, a blood droplet attaches thereto, applying a force to the micro-beam during clot formation. Using Piezoresistive micro-beams or other Piezoresistive components disposed upon such micro-beams, the device measures retractive force of a blood droplet based upon changes in resistance. The sensitivity of such measurements allows use of small quantities of blood for measurement, between 15 microliters and 300 microliters. The device further permits continuous measurement of coagulation, allowing measurement of distinct reaction, contraction development, and fibrinolysis phases for each blood sample.

Abstract: A method and apparatus for generating droplets with a high level of uniformity in liquid systems that present a low interfacial tension. This method and apparatus utilize the breakup of the dispersed phase in a controlled fashion by periodically varying the pressure that drives the fluids so as to successfully generate emulsions with a good control over the size. The method and apparatus can be used for the formation of simple emulsion or double emulsion where a larger droplet contains one or more smaller droplets.

Abstract: A method and apparatus for generating droplets with a high level of uniformity in liquid systems that present a low interfacial tension. This method and apparatus utilize the breakup of the dispersed phase in a controlled fashion by periodically varying the pressure that drives the fluids so as to successfully generate emulsions with a good control over the size. The method and apparatus can be used for the formation of simple emulsion or double emulsion where a larger droplet contains one or more smaller droplets.

Abstract: A method and apparatus for generating droplets with a high level of uniformity in liquid systems that present a low interfacial tension. This method and apparatus utilize the breakup of the dispersed phase in a controlled fashion by periodically varying the pressure that drives the fluids so as to successfully generate emulsions with a good control over the size. The method and apparatus can be used for the formation of simple emulsion or double emulsion where a larger droplet contains one or more smaller droplets.