Abstract: Disclosed is a sensor for identifying the presence of a biological material in a sample, the sensor comprising: an antenna apparatus for transmitting and receiving microwave electromagnetic (EM) signals; a signal transmitter apparatus coupled to the antenna apparatus and arranged to transmit a microwave-frequency output signal to the antenna apparatus for emission therefrom as an output electromagnetic (EM) signal for reflection at a said sample and to receive a microwave-frequency return signal from the antenna apparatus in response to a return electromagnetic (EM) signal received thereat by reflection from a said sample; a signal processor arranged to calculate a complex-valued reflection coefficient, comprising a real component and an imaginary component, according to said return signal and said output signal, and to detect the presence of said biological material in said sample according to both the real component and the imaginary component of said reflection coefficient.

Abstract: A linking list transmit queue system includes a queue, packet buffer and buffer tag with one-to-one mapping between them. The packet buffer stores packet data, the buffer tag stores packet data length and the queue stores a linking list of addresses corresponding to the packet data in the order in which the packet data was received from a transmitting network node. The system transmits the stored packet data in the order it was received from the transmitting network node to a destination network node.

Abstract: A thin client computer comprises a machine body and a base. The machine body has a motherboard mounted therein. The motherboard has a base connector on one side for exposing to the outside of the machine body. The base has an opposite connector for coupling with the base connector of the motherboard and several peripheral connection ports for coupling with several peripherals. The machine body can be coupled with the opposite connector of the base via the base connector so that the peripherals can be coupled with the peripheral connection ports of the base for further providing the machine body with more available functions.

Abstract: A linking list transmit queue system includes a queue, packet buffer and buffer tag with one-to-one mapping between them. The packet buffer stores packet data, the buffer tag stores packet data length and the queue stores a linking list of addresses corresponding to the packet data in the order in which the packet data was received from a transmitting network node. The system transmits the stored packet data in the order it was received from the transmitting network node to a destination network node.

Abstract: A multi-functional portable information learning device comprises a seat, a machine body, a circuit control unit. The seat is installed with a receptacle for being connected to a connector at a bottom of the machine body. The tilt portion receptacle is connected to a connecting seat. The connecting seat is connected to a computer through a universal series bus transmission line. The machine body is installed with a operation key set, a lateral key set, a liquid crystal window, a multimedia memory extension slot. A circuit control unit is installed within the machine body. The circuit control unit is connected to a connector, a liquid crystal window, a operation key set, a lateral key set, and the multimedia memory extension slot. Thereby, the voice and text are displayed synchronously and text or music is uploaded or downloaded or synchronously for enhancing language learning effect and extending memory.