Abstract: A wireless communication device includes a host and a protective jacket. The host has a connector. The protective jacket includes a jacket and a cap. The jacket has a receiving space and an opening that communicates with the receiving space and the outside of the jacket. The cap is configured in the receiving space and opposite to the opening. The wireless communication device is placed in the receiving space and is in a first state or a second state relative to the jacket. When the wireless communication device is in the first state, the cap covers the connector. When the wireless communication device is in the second state, the connector passes through the opening and protrudes from the jacket.

Abstract: A battery car anti-theft device, which is mainly characterized in utilizing an electronic control circuit to control the external power supply state of a battery, and when set in the anti-theft state, if it is detected that the supply current is greater than a preset value, then the entire external power supply of the battery is immediately cut off, thus, there is no power supply to start the engine to enable the car thief to drive the vehicle away, thereby achieving the objective of preventing the vehicle from being stolen.

Abstract: A method for analyzing development data of an airport city is provided. First, a construct collecting database including a plurality of construct classes is provided, wherein each of the construct classes is corresponding to at least one keyword. Then, a text analysis is executed to the development data of the airport city to divide the development data into a building phase and an operating phase, and a plurality of construct messages is respectively captured from the development data of the building phase and the development data of the operating phase according to the keywords in the construct collecting database. Next, each of the construct messages is linked to a corresponding object according to the corresponding construct class and an occurrence time of the construct message. Finally, relations between the objects are established according to a construct relation data.

Abstract: A rotational retaining mechanism for storage devices allows storage devices to be unlocked quickly in a rotatable way thereby enlarging the operating space in a housing. The rotational retaining mechanism includes a housing, a modular frame for receiving storage devices and a retaining buckle. The housing has a bottom board, a stopping part protruded upwardly from the bottom board, and a front board. The front board has a receiving entry and a pair of pivotal parts respectively formed at two sides thereof. The module frame has a pair of pivotal parts for mounting pivotally with the pivotal parts of the housing, a holding tab, and a clipping part. The holding tab is held by the stopping part of the housing, when the module frame is opened. The retaining buckle is positioned on the housing and clipped with the clipping part when the modular frame is closed.

Abstract: A quaternary ammonium salt antibacterial is provided, which has a structural formula as follows: in which M represents, for example, Si; R represents a single bond or a C1-C4 alkyl group; R1-R3 are the same or different to each other and represent a C3-C18 alkyl group, respectively; R4 represents a C1-C8 alkyl group or hydrogen; R5-R6, are the same or different to each other and represent a C1-C8 alkyl group, alkoxy group, or hydroxyl group, respectively; and X represents halogen.

Abstract: A retaining modular mechanism for a hard disk and a modular frame thereof simplifies the conventional process of locking and unlocking a hard disk and reduces assembly time. Fixing holes are applied on two sides of a hard disk that includes a receiving housing and a modular frame. The receiving housing has a bottom board and a side board. The modular frame has a base positioned on the bottom board, a locking part and an elastic element positioned between the base and a locking part. The locking part has a bottom wall slidably mounted on the base, and a sidewall positioned on the side board of the receiving housing. The base has a fixing sidewall opposite the sidewall of the locking part. The fixing sidewall and the sidewall of the locking part are respectively formed with a plurality of fixing pins. The fixing pins insert into the fixing holes.

Abstract: A rotational retaining mechanism for storage devices allows storage devices to be unlocked quickly in a rotatable way thereby enlarging the operating space in a housing. The rotational retaining mechanism includes a housing, a modular frame for receiving storage devices and a retaining buckle. The housing has a bottom board, a stopping part protruded upwardly from the bottom board, and a front board. The front board has a receiving entry and a pair of pivotal parts respectively formed at two sides thereof. The module frame has a pair of pivotal parts for mounting pivotally with the pivotal parts of the housing, a holding tab, and a clipping part. The holding tab is held by the stopping part of the housing, when the module frame is opened. The retaining buckle is positioned on the housing and clipped with the clipping part when the modular frame is closed.

Abstract: A retaining modular mechanism for a hard disk and a modular frame thereof simplifies the conventional process of locking and unlocking a hard disk and reduces assembly time. Fixing holes are applied on two sides of a hard disk that includes a receiving housing and a modular frame. The receiving housing has a bottom board and a side board. The modular frame has a base positioned on the bottom board, a locking part and an elastic element positioned between the base and a locking part. The locking part has a bottom wall slidably mounted on the base, and a sidewall positioned on the side board of the receiving housing. The base has a fixing sidewall opposite the sidewall of the locking part. The fixing sidewall and the sidewall of the locking part are respectively formed with a plurality of fixing pins. The fixing pins insert into the fixing holes.