Abstract: The present disclosure discloses an electroencephalogram (EEG) emotion recognition method based on a spiking convolutional neural network. In the present disclosure, after EEG emotion data is preprocessed, a differential entropy feature is extracted and a time window is intercepted, and then a spiking convolutional encoder is configured to encode the EEG emotion data; a spiking convolutional feature extractor extracts a spiking data feature; and a spiking fully connected classifier performs learning and classification. In the present disclosure, a spiking neural network combining a spiking convolutional layer and a spiking fully connected layer is trained directly to achieve an objective of EEG emotion classification.

Abstract: The invention provides a bioactive substance composition, a serum-free medium comprising the composition and the uses thereof. The bioactive substance composition is used for serum-free medium and/or composition and the preparation thereof; The serum-free medium and/or composition can be used for primary culture and secondary culture of cells and/or tissues. The cells are selected from any one or more of tendon and/or ligament derived cells, chondrocytes, meniscus stem cells, mesenchymal stem cells, skeleton stem cells, and muscle stem cells. The tissue is the musculoskeletal system tissue. The bioactive substance composition and/or serum-free medium and/or the composition can be used to prepare drugs for tissue and/or organ injury treatment; The tissue or organ injury is selected from the tissue or organ injury of the musculoskeletal system.

Abstract: An integrally-formed three-dimensional (3D) bio-printing system capable of alternate feeding of multiple materials, comprising: an optical imaging unit and a light path conversion unit, wherein the optical imaging unit comprises an image processing unit and a projection unit, the image processing unit segmenting a 3D modeling graphic of a printed subject to form image information, the projection unit converting the image information into one or more optical images, and the light path conversion unit projects the imaged light paths into bio-ink that can be cured by light, so that the projected image can cure the bio-ink by means of the focus of light.

Abstract: The purpose of the present invention is to provide a light control agent and explore its application, and is expected to improve the tissue binding force and convenience of the existing biological glue material by providing a new reagent or material for biological damage or homeostasis. In one of embodiment, this invention provides an agent for repairing biological damage or homeostasis, wherein the agent comprises a natural biological macromolecule modified by the photo-responsive cross-linking group.

Abstract: The present invention relates to the technical field of silk scaffolds, and in particular, to a silk/pet mix-woven scaffold and a preparation method and use thereof. The silk/PET mix-woven scaffold is formed by weaving silk and PET fibers. Sericin of the silk is removed. The silk and the PET fibers are mixed and knitted. The PET fibers provide reliable fixation in an early stage to maintain the stability of mechanical properties, and the silk degrades gradually in a later stage to promote the growth of new tissues to achieve the integration of the scaffold and the body. When the scaffold is used for artificial tendon/ligament recovery, its overall performance is better than that of pure silk or pure PET fiber scaffolds, and the scaffold has excellent clinical transformation potential.

Abstract: The present invention relates to the technical field of silk scaffolds, and in particular, to a silk/pet mix-woven scaffold and a preparation method and use thereof. The silk/PET mix-woven scaffold is formed by weaving silk and PET fibers. Sericin of the silk is removed. The silk and the PET fibers are mixed and knitted. The PET fibers provide reliable fixation in an early stage to maintain the stability of mechanical properties, and the silk degrades gradually in a later stage to promote the growth of new tissues to achieve the integration of the scaffold and the body. When the scaffold is used for artificial tendon/ligament recovery, its overall performance is better than that of pure silk or pure PET fiber scaffolds, and the scaffold has excellent clinical transformation potential.

Abstract: The purpose of the present invention is to provide a light control agent and explore its application, and is expected to improve the tissue binding force and convenience of the existing biological glue material by providing a new reagent or material for biological damage or homeostasis. In one of embodiment, this invention provides an agent for repairing biological damage or homeostasis, wherein the agent comprises a natural biological macromolecule modified by the photo-responsive cross-linking group.