2results about How to "Improve technical level" patented technology

A magnetic resonance-compatible programmable synchronized photostimulation system includes a main control unit and a stimulation execution unit. The main control unit is located outside the magnetic resonance scanning room, while the stimulation execution unit is located inside the scanning room and consists only of an LED light panel shielded by a magnetic field. The main control unit is configured to: receive photostimulation sequence parameters configured by the user in a modular manner through a graphical interface; receive a scan trigger signal from the magnetic resonance equipment, and automatically control the start and stop of the photostimulation sequence based on the trigger signal using hardware triggering; thereby achieving high-precision time synchronization between photostimulation and magnetic resonance scanning while maintaining magnetic resonance compatibility. This invention solves electromagnetic compatibility issues through a split architecture, achieves millisecond-level synchronization accuracy through hardware TTL triggering, and enhances experimental paradigm flexibility through modular programmable sequences, making it suitable for neuroscience research fields such as functional magnetic resonance imaging.

This invention discloses a method for preparing a standard decoction of Apocynum venetum leaves and its quality testing, belonging to the field of traditional Chinese medicine quality research technology. The invention includes the following steps: Weigh an appropriate amount of Apocynum venetum leaf slices, place them in a clay pot, and decoct twice. For the first decoction, add 12 times the amount of water, soak for 30 minutes, bring to a boil over high heat, then simmer over low heat for 30 minutes. For the second decoction, add 10 times the amount of water, bring to a boil over high heat, then simmer over low heat for 20 minutes. Filter the decoction through a 200-mesh sieve, cool the filtrate to room temperature in a cold water bath, combine the two filtrates, and concentrate under vacuum at 50°C and an absolute vacuum of 30–40 mbar until a fluid extract with a weight ratio of approximately 1:1 is obtained. Collect the concentrate and freeze-dry to obtain the sample. This invention determines the main content, characteristic chromatograms, and extractives of Apocynum venetum leaves after decoction preparation, and investigates the transfer rate. It provides an objective quality standard to measure the component transfer from the slices to the decoction, ensuring the quality and effectiveness of the decoction.