A multi-core cable includes a plurality of coaxial wires, each coaxial wire including a center conductor whose sectional area is 0.0005 mm.sup.2 to 0.0039 mm.sup.2. The multi-core cable includes a resin tape wrapped around the coaxial wires so that all of the plurality of coaxial wires are included therein, a shield layer being made of metal and covering the resin tape, and a sheath covering the shield layer and arranged at an outermost layer of the multi-core cable. The sheath is made of thermoplastic vulcanizate or tetrafluoroethylene-propylene-based fluorine containing rubber.

A double skin façade (DSF) for a building is disclosed. The DSF has a first façade, a second façade, and a gap extending therebetween. Movement of air is driven in an upward direction toward an upper end of the DSF, causing movement of air contaminants from a lower end of the DSF to the upper end of the DSF, and thereby enhancing the air quality of the street canyon by removing air contaminants from a street level adjacent the building. Also disclosed is a building having a DSF, and a method of enhancing air quality in a street canyon by constructing a DSF on a building.

An arrangement (100) for underwater activities includes a reservoir (101), which reservoir includes a wall (102) securing a space inside the reservoir (101) to be filled at least partially with water (103). The arrangement has also an opening (104a, 104b) for entering the reservoir, and a container (105) to be filled at least partially with water (103). The container receives the reservoir (101) so that the lower portion of the reservoir including at least one opening (104a) is located under the water surface level (103). The lower portion of the reservoir when introduced with the container is securing together with the container's (105) wall an upper portion (107) of the container, which upper portion (107) supports via the opening (104a) the pressure difference between the upper portion (107) of the container (105) and the space inside the reservoir (101), when water (103) is introduced into the space inside the reservoir.

Waterborne data center facility systems and methods comprising a purpose-built marine vessel, a pre-fabricated data center facility structure, a plurality of computer systems, a plurality of energy-efficient water-based heat exchange systems, a plurality of energy efficient closed loop cooling systems, a plurality of data center modules and a plurality of electrical power generators. Described systems and methods may be employed to quickly deploy an energy-efficient waterborne data center facility. Described waterborne data center facility is transportable and may be moved to areas where data center facility and data center type services are needed. Water-based heat exchange and closed-loop cooling system enable energy-efficient cooling to data center facility and the plurality of computing systems therein. Power generators may be used to provide power to data center facility. Waterborne data center facility may prove helpful in areas following natural disasters or for military purposes where data center services are needed but not readily available.

A floating construction comprising a container filled fully or partially with water, the lower portion of the container being located within a surrounding body of water and the water surface level of the surrounding body of water being substantially lower than the water surface level inside the container, the container comprising transparent walls or walls with transparent sections and at least one open opening for entering the container, which at least one open opening is located below the surface level of the surrounding body of water, and which floating construction comprises space for spectators observing activities taking place inside the container, wherein the floating construction comprises at least one ballast tank, which ballast tank is connected to the container with a controllable pressure connection, and which ballast tank has controllable water connection to the surrounding body of water.

A structure comprises at least one outer wall having an internal wall section and an outer wall section with an air flow passage therebetween. A circulation system circulates air through the flow passage to inhibit moisture accumulation and mold growth. A sensing system determines the presence of moisture in the flow passage and generates a signal in response thereto. A controller receives the signal from the sensing system and controls the circulation system to maintain a predetermined temperature and relative humidity in the flow passage.

A device may receive a power demand for a load and a weather forecast for a time period. The device may determine a first supply of power available from a photo-voltaic (PV) installation for the time period based on the weather forecast. The device may determine a power deficit for the time period based on the power demand and the first supply of power. The device may determine a first cost associated with utilizing a second supply of power available from a battery and a second cost associated with utilizing a third supply of power available from an engine for the time period. The device may determine a power source to overcome the power deficit based on the first cost and the second cost and may cause the PV installation and the power source to supply power to satisfy the power demand for the load.

An improved solar heater and ventilator device is disclosed. In one embodiment, the solar heater and ventilator system is a multi-functional device that can be used in a variety of ways to provide heat, produce and store electricity, and provide natural ventilation. In one embodiment, the device is comprised of a main frame, multiple columns of interconnected movable cubes and a distributor panel. Through the interconnected movable cubes, the solar heater and ventilator system can easily switch functionalities between a solar heater and a ventilator and cooling system. The device is easy and inexpensive to operate, as it does not require any external electricity, and its functionalities can be changed with simple touches of buttons

A sustainable floating and land application community based on a mass-produced modular, pre-fabricated kit of parts referred to as floating modular units (FMU) or land module units (LMU). Both modular units are designed to allow for various needs while remaining simple to deliver and assemble by hand in remote destinations prone to volatile shifts in water levels and currents. Both floating and land module units can be erected for use on land and bodies of water.

A T-shaped shear wall module including a straight pattern plate, two L-shaped pattern plates with a same structure, and connectors. Each of the two L-shaped pattern plates includes a first pattern plate and a second pattern plate which are perpendicular to each other. In a direction perpendicular to the straight pattern plate, the two first pattern plates are arranged in parallel to each other and both extend in a direction away from the straight pattern plate, and a plurality of connectors are rigidly arranged between two first pattern plates. Along a direction parallel to the straight pattern plate, two second pattern plates are coplanar and extend in opposite directions, and a plurality of connectors are rigidly arranged between the straight pattern plate and the two second pattern plates. The present application also provides a shear wall and a construction method thereof.