Abstract: Techniques for secure communication is provided. The techniques include requesting first smart contract execution by one or more nodes of the communication system to determine permissions for communication; performing communication based on the requested permissions; and requesting second smart contract execution by one or more nodes of the communication system to verify information associated with the communication.

Abstract: Techniques for secure communication is provided. The techniques include requesting first smart contract execution by one or more nodes of the communication system to determine permissions for communication; performing communication based on the requested permissions; and requesting second smart contract execution by one or more nodes of the communication system to verify information associated with the communication.

Abstract: A construction panel comprising a rigid insulation layer having an interior surface and an exterior surface, an outer concrete wythe secured to the exterior surface of the insulation layer, an inner concrete wythe secured to the interior surface of the insulation layer, a grid system which ties the outer concrete wythe to the inner concrete wythe and a capillary tube system located within the construction panel wherein liquid is passed through the tubing in order to increase or decrease the temperature of the construction panel.

Abstract: A construction panel comprising a rigid insulation layer having an interior surface and an exterior surface, an outer concrete wythe secured to the exterior surface of the insulation layer, an inner concrete wythe secured to the interior surface of the insulation layer, a grid system which ties the outer concrete wythe to the inner concrete wythe and a capillary tube system located within the construction panel wherein liquid is passed through the tubing in order to increase or decrease the temperature of the construction panel.

Abstract: A construction panel comprising a rigid insulation layer having an interior surface and an exterior surface, an outer concrete wythe secured to the exterior surface of the insulation layer, an inner concrete wythe secured to the interior surface of the insulation layer, a grid system which ties the outer concrete wythe to the inner concrete wythe and a capillary tube system located within the construction panel wherein liquid is passed through the tubing in order to increase or decrease the temperature of the construction panel.

Abstract: A non-combustion, chemical heat source includes a heat chamber having a closed end and an open end. The heat chamber includes an apertured heat cartridge disposed at the open end of the chamber, an abutment disposed at the closed end of the chamber, an activating solution, a frangible seal separating the activating solution and the heat cartridge. The heat cartridge includes metallic agents that may come in a variety of configurations. The heat source is activated when the heat cartridge is pushed through and breaks the frangible seal allowing contact between the metallic agents and the activating solution. The heat cartridge includes an aperture in the bottom of the cartridge and absorbent paper surrounding the metallic agents, both of which control the transfer of the activating solution into the metallic agents to cause the chemical reaction. The heat sources may be incorporated into smoking articles and may also be used to heat foods or beverages, in hand warmers, and to heat equipment or materials.