A vehicular antenna device capable of preventing reception trouble in a radio, a TV receiver, or the like due to noise by suppressing electromagnetic noise radiated from an electronic device or the like is provided. A vehicular antenna device is equipped with an antenna base 2 which is fixed to a vehicle body via an attaching member, an antenna case which covers the antenna base, and an antenna element 5 and a camera module 10 as an electronic device which are disposed in an internal space surrounded by the antenna base 2 and the antenna case. A camera module case 40 surrounds a circuit board 50 of the camera module 10 and thereby shields it.

Apparatus and methods for facilitating an intramolecular reaction that occurs in single collisions of CO.sub.2 molecules (or their derivatives amenable to controllable acceleration, such as CO.sub.2.sup.+ ions) with a solid surface, such that molecular oxygen (or its relevant analogs, e.g., O.sub.2.sup.+ and O.sub.2.sup.? ions) is directly produced are provided. The reaction is driven by kinetic energy and is independent of surface composition and temperature. The methods and apparatus may be used to remove CO.sub.2 from Earth's atmosphere, while, in other embodiments, the methods and apparatus may be used to prevent the atmosphere's contamination with CO.sub.2 emissions. In yet other embodiments, the methods and apparatus may be used to obtain molecular oxygen in CO.sub.2-rich environments, such as to facilitate exploration of extraterrestrial bodies with CO.sub.2-rich atmospheres (e.g. Mars).

A photovoltaic (PV) system can include strings of PV collection devices. A positive parallel bus can be coupled to positive terminals of first and second strings and a negative parallel bus can be coupled to negative terminals of first and second strings.

A connector housing apparatus includes a main body section that has a plurality of connectors confronting a plurality of external connectors of an external housing and a moving guide section that guides movement of the main body section toward the external housing. The moving guide section has a latching section that latches the moving guide section on the external housing. The main body section is connected to the moving guide section so as to be movable in a fitting direction of the plurality of connectors. The latching section latches the moving guide section on a position at which the plurality of connectors are fitted to the plurality of external connectors. The main body section moves along the moving guide section in the fitting direction of the plurality of connectors, and thereby the plurality of connectors are fitted to the plurality of external connectors.

A connector housing apparatus includes a main body section that has a plurality of connectors confronting a plurality of external connectors of an external housing and a moving guide section that guides movement of the main body section toward the external housing. The moving guide section has a latching section that latches the moving guide section on the external housing. The main body section is connected to the moving guide section so as to be movable in a fitting direction of the plurality of connectors. The latching section latches the moving guide section on a position at which the plurality of connectors are fitted to the plurality of external connectors. The main body section moves along the moving guide section in the fitting direction of the plurality of connectors, and thereby the plurality of connectors are fitted to the plurality of external connectors.

An over-voltage protection system for an accelerator can include: a plurality of DC power supplies configured to provide a plurality of voltage levels up to a desired voltage level; and an acceleration tube electrically connected to the plurality of DC power supplies and configured to accelerate a charged particle. The acceleration tube can include a plurality of stages. Each stage can include a plurality of electrodes and a plurality of varistors configured to discharge energy in response to an overvoltage event. One electrode of the plurality of electrodes can be electrically coupled to a voltage level of the plurality of voltage levels. The plurality of electrodes and the plurality of varistors can be electrically coupled to each other and arranged in an alternating fashion.

A hinge mechanism includes a hinge base and rotating support mechanisms respectively connected to two opposite sides of the hinge base. The rotating support mechanism includes a rotating shaft, a hinge rotating plate and a hinge moving plate. The hinge rotating plate is rotatably connected to the hinge base through the rotating shaft, has a first end adjacent to the rotating shaft and provided with an accommodating groove. The rotating shaft has a speed reducer with a rotating output portion which can rotate along with the rotating shaft. A rotating speed of the rotating output portion is lower than that of the rotating shaft, and the rotating output portion and the hinge moving plate are rotatably connected to each other. The hinge moving plate includes a second support portion, and the second support portion is at least partially located in the accommodating groove.