Non-fungible token(NFT)emerges with the marvelous explosion of the metaverse.NFT digital works are profoundly impacting the existing copyright system,which needs to be amended and responded to in time.There is a possi...Non-fungible token(NFT)emerges with the marvelous explosion of the metaverse.NFT digital works are profoundly impacting the existing copyright system,which needs to be amended and responded to in time.There is a possibility that it will completely change the distribution pattern of rights and interests in the field of copyright law.Currently,the legal nature of the casting and trading of NFT digital works remains controversial.The liability of NFT digital works creators,as well as service platforms,is required to be further identified.This article starts with an analysis of the right attributes of NFT digital works based on intellectual property law.Subsequently,the related legal issues and countermeasures are discussed,including the exhaustion of the right-holders,the duty of platform management,and the assumption of tort liability arising from the transaction.It is suggested that the NFT digital works should be treated with considerable caution and the legal system of NFT digital works should be constructed in the near future.展开更多
Introduction: Iliac particulate cancellous bone and marrow (PCBM) is commonly used as a high-quality reconstruction material;however, PCBM cannot be extracted in sufficient amounts to meet demand. To determine the app...Introduction: Iliac particulate cancellous bone and marrow (PCBM) is commonly used as a high-quality reconstruction material;however, PCBM cannot be extracted in sufficient amounts to meet demand. To determine the appropriate amount of iliac PCBM to be collected, we used digital technology to measure the volume required for jaw reconstruction before surgery. Clinical Case: The patient, a 23-year-old man, underwent surgery for a calcifying odontogenic cyst. A maxillary cyst occupied the left anterior-premolar region (tooth 21 - 25) and the deciduous canine remained;a permanent canine was included in the cyst. We planned to preserve the teeth except for the impacted canine, completely excise the maxillary cyst, and preserve the alveolar ridge morphology. Preoperative digital imaging was used to determine the amount of alveolar ridge reconstruction required and accordingly determine the amount of iliac cancellous bone to be harvested. We used a titanium mesh tray and grafts of iliac particulate cancellous bone and marrow to reconstruct the alveolar ridge. The amount of iliac cancellous bone that needed to be collected was clarified and the supply amount could be collected in just the right amount;thus, the cortical bone of the iliac inner plate could be preserved. The alveolar bone morphology was reconstructed to allow the placement of dental implants as per the preoperative digital surgery. Three years after the operation, no sign of recurrence has been observed. Conclusion: Minimally invasive surgery was performed by clarifying the amount of iliac cancellous bone graft that needs to be harvested, which improved the accuracy of surgery.展开更多
基金supported by the major project of the National Social Science Foundation“Research on the Social Impact and Governance Path of Internet Platforms”(21&ZD195)
文摘Non-fungible token(NFT)emerges with the marvelous explosion of the metaverse.NFT digital works are profoundly impacting the existing copyright system,which needs to be amended and responded to in time.There is a possibility that it will completely change the distribution pattern of rights and interests in the field of copyright law.Currently,the legal nature of the casting and trading of NFT digital works remains controversial.The liability of NFT digital works creators,as well as service platforms,is required to be further identified.This article starts with an analysis of the right attributes of NFT digital works based on intellectual property law.Subsequently,the related legal issues and countermeasures are discussed,including the exhaustion of the right-holders,the duty of platform management,and the assumption of tort liability arising from the transaction.It is suggested that the NFT digital works should be treated with considerable caution and the legal system of NFT digital works should be constructed in the near future.
文摘Introduction: Iliac particulate cancellous bone and marrow (PCBM) is commonly used as a high-quality reconstruction material;however, PCBM cannot be extracted in sufficient amounts to meet demand. To determine the appropriate amount of iliac PCBM to be collected, we used digital technology to measure the volume required for jaw reconstruction before surgery. Clinical Case: The patient, a 23-year-old man, underwent surgery for a calcifying odontogenic cyst. A maxillary cyst occupied the left anterior-premolar region (tooth 21 - 25) and the deciduous canine remained;a permanent canine was included in the cyst. We planned to preserve the teeth except for the impacted canine, completely excise the maxillary cyst, and preserve the alveolar ridge morphology. Preoperative digital imaging was used to determine the amount of alveolar ridge reconstruction required and accordingly determine the amount of iliac cancellous bone to be harvested. We used a titanium mesh tray and grafts of iliac particulate cancellous bone and marrow to reconstruct the alveolar ridge. The amount of iliac cancellous bone that needed to be collected was clarified and the supply amount could be collected in just the right amount;thus, the cortical bone of the iliac inner plate could be preserved. The alveolar bone morphology was reconstructed to allow the placement of dental implants as per the preoperative digital surgery. Three years after the operation, no sign of recurrence has been observed. Conclusion: Minimally invasive surgery was performed by clarifying the amount of iliac cancellous bone graft that needs to be harvested, which improved the accuracy of surgery.
