Abstract: A pH-responsive hydrogel, which is synthesized by using mixed pectin and sucralfate treated with a small amount of acid to form a pH-responsive hydrogel. The pH-responsive hydrogel can form a temporary coating on the surface of the gastrointestinal tract to reduce excessive nutrient absorption, and exhibits excellent barrier properties and mucosal adhesion effects, which are useful for reducing blood sugar rise and weight gain, the liver fat accumulation, body fat accumulation and blood low-density lipoprotein that have a significant effect. In addition, the technical principles disclosed in the pH-responsive hydrogel should be applied to other polymer materials to manufacture different pH-responsive hydrogels.

Abstract: The disclosure provides an electronic device, including a circuit board, multiple semiconductor components, a first light reflecting structure, and a second light reflecting structure. The circuit board includes a substrate, and the substrate may have a first surface and at least one side surface. The multiple semiconductor components are disposed on the first surface. The first light reflecting structure is disposed on the first surface. The second light reflecting structure is disposed on the first surface and the at least one side surface.

Abstract: A power-on test system for testing a storage device, the power-on test system includes a computer, a signal microcontroller, a switch unit, and a power source. The computer includes a counter capable of recording the number of power-on times of the storage device. The computer prompts the signal microcontroller to turn on or off the switch unit according to a preset frequency, the power source electrically connects to or disconnects from the storage device through the switch unit, the storage device outputs corresponding power-on status signals and power-off status signals to the computer, and the counter increases by one after each power-on testing.

Abstract: A power-on test system for testing a storage device, the power-on test system includes a computer, a signal microcontroller, a switch unit, and a power source. The computer includes a counter capable of recording the number of power-on times of the storage device. The computer prompts the signal microcontroller to turn on or off the switch unit according to a preset frequency, the power source electrically connects to or disconnects from the storage device through the switch unit, the storage device outputs corresponding power-on status signals and power-off status signals to the computer, and the counter increases by one after each power-on testing.