Abstract: A method for removing a heavy metal from water includes subjecting a microbial solution containing a liquid culture of a urease-producing bacterial strain and a reaction solution containing a manganese compound and urea to a microbial-induced precipitation reaction, so as to obtain biomineralized manganese carbonate (MnCO3) particles, admixing the biomineralized MnCO3 particles with water containing a heavy metal, so that the biomineralized MnCO3 particles adsorb the heavy metal in the water to form a precipitate, and removing the precipitate from the water.

Abstract: A memory array and an operation method of the memory array are provided. The memory array includes first and second ferroelectric memory devices formed along a gate electrode, a channel layer and a ferroelectric layer between the gate electrode and the channel layer. The ferroelectric memory devices include: a common source/drain electrode and two respective source/drain electrodes, separately in contact with a side of the channel layer opposite to the ferroelectric layer, wherein the common source/drain electrode is disposed between the respective source/drain electrodes; and first and second auxiliary gates, capacitively coupled to the channel layer, wherein the first auxiliary gate is located between the common source/drain electrode and one of the respective source/drain electrodes, and the second auxiliary gate is located between the common source/drain electrode and the other respective source/drain electrode.

Abstract: Some implementations described herein include systems and techniques for fabricating a wafer-on-wafer product using a filled lateral gap between beveled regions of wafers included in a stacked-wafer assembly and along a perimeter region of the stacked-wafer assembly. The systems and techniques include a deposition tool having an electrode with a protrusion that enhances an electromagnetic field along the perimeter region of the stacked-wafer assembly during a deposition operation performed by the deposition tool. Relative to an electromagnetic field generated by a deposition tool not including the electrode with the protrusion, the enhanced electromagnetic field improves the deposition operation so that a supporting fill material may be sufficiently deposited.

Abstract: A fluorine-containing elastomer composition includes a curable fluorine-containing polymer comprising at least one fluorinated cure site monomer having a cure site; an group IIIB element-containing reinforcing additive in an amount of 8 to 15 weight parts with respect to 100 weight parts of the curable fluorine-containing polymer; and a curative configured for curing the at least one fluorinated cure site monomer.

Abstract: An overvoltage protection circuit protects a portable electronic device against overvoltage. The overvoltage protection circuit includes an input unit for receiving an input voltage supplied by a voltage source; a voltage-divider module for dividing the input voltage and outputting a divided voltage; a voltage-regulator module for comparing a comparison voltage with the divided voltage and generating a first control signal; a first switch unit being controllably switched by the first control signal to a short-circuit state or an open-circuit state and generating a second control signal; and a second switch unit being controllably switched by the second control signal to a circuit state reverse to that of the first switch unit, and stopping supplying the input voltage to the portable electronic device when the input voltage is no less than a rated voltage of the portable electronic device. Therefore, a temperature-independent overvoltage protection can be achieved.

Abstract: A UART interface communication circuit includes a plurality of communication devices, and each includes a UART interface, a selecting apparatus, a CPU, and a multiplexer (MUX). The communication devices connect with each other via the UART interfaces thereof. The selecting apparatus is connected to the CPU for defining one of the communication devices as a master communication device and the rest as slave communication devices. The MUX is connected between the UART interface and the CPU. When the master communication device transmits data carrying an ID to the slave communication devices, a slave communication device corresponding to the ID receives and processes the data, and transmits return data to the master communication device, and then the MUX receives the return data from the slave communication device and passes it to the CPU of the master communication device for processing.

Abstract: A UART interface communication circuit includes a plurality of communication devices, and each includes a UART interface, a selecting apparatus, a CPU, and a multiplexer (MUX). The communication devices connect with each other via the UART interfaces thereof. The selecting apparatus is connected to the CPU for defining one of the communication devices as a master communication device and the rest as slave communication devices. The MUX is connected between the UART interface and the CPU. When the master communication device transmits data carrying an ID to the slave communication devices, a slave communication device corresponding to the ID receives and processes the data, and transmits return data to the master communication device, and then the MUX receives the return data from the slave communication device and passes it to the CPU of the master communication device for processing.