Abstract: Memory devices and methods of forming the same are provided. A memory device of the present disclosure includes a bottom dielectric layer, a gate structure extending vertically from the bottom dielectric layer, a stack structure, and a dielectric layer extending between the gate structure and the stack structure. The stack structure includes a first silicide layer, a second silicide layer, an oxide layer extending bet ween the first and second silicide layers, a channel region over the oxide layer and extending between the first and second silicide layers, and an isolation layer over the second silicide layer. The first and second silicide layers include cobalt, titanium, tungsten, or palladium.

Abstract: A primary and subsidiary complex number type A-shaped ladder includes a first handheld ladder and a second handheld ladders pivotally connected together, and at least one first extended ladder and one second extended ladders able to be assembled at the bottom ends of the first and the second handheld ladders. The first and the second extended ladders have their top ends respectively provided with a necking down fitting member, while the first and the second handheld ladders have the bottom ends of their vertical bars respectively provided with a fitting opening for the fitting member to be inserted therein. Thus, respective first extended ladder and respective second extended ladder can be stored or transported independently, or can be respectively assembled at the bottom ends of the first and the second handheld ladders to have the A-shaped ladder extended to a position high enough for use.

Abstract: A constant pressure variable speed inverter control booster pump system including a control unit, an inverter controlled by the control unit to change output frequency subject to the pressure of the water supply pipe, a motor controlled by the inverter to drive a pump, a pressure transmitter installed to detect the pressure in the water supply pipe, and a pump controlled by the motor to pump water through the water supply pipe, wherein the control unit detects the change of pressure in the water supply pipe, and provides an analog signal DC 0V-10V to the inverter subject to the detection result, causing the inverter to change output frequency to the motor, so as to control the speed of the motor under a constant range.