Magnetic COF on MOF heterojunction assisted surface-enhanced Raman spectroscopy for 17β-estradiol analysis.

17β-estradiol (E2) is a crucial estrogen that significantly influences reproductive biological processes and the development of associated diseases, highlighting the need for effective detection methods. Here, we propose a magnetic hierarchical porous material (Mag MOF@COF-Apt) through the in situ growth of a TAPB-DMTP-COF layer on a magnetic Fe-MOF core for the selective recognition and surface-enhanced Raman scattering (SERS) analysis of E2. The Mag MOF@COF-Apt features the inherent SERS-enhancing properties of Mag MOFs.

Watertight 2-manifold 3D bone surface model reconstruction from CT images based on visual hyper-spherical mapping.

This paper proposes a general algorithm to reconstruct watertight 2-manifold 3D bone surface model from CT images based on visual hyper-spherical mapping. The reconstruction algorithm includes three main steps: two-step thresholding, initial watertight surface reconstruction and shape optimization. Firstly, volume sampling points of the target bone with given narrower threshold range are extracted by thresholding with combination of 3D morphology operation.

Tooth segmentation and gingival tissue deformation framework for 3D orthodontic treatment planning and evaluating.

In this study, we propose an integrated tooth segmentation and gingival tissue deformation simulation framework used to design and evaluate the orthodontic treatment plan especially with invisible aligners. Firstly, the bio-characteristics information of the digital impression is analyzed quantitatively and demonstrated visually. With the derived information, the transitional regions of tooth-tooth and tooth-gingiva are extracted as the solution domain of the segmentation boundaries.

Single-Tooth Modeling for 3D Dental Model.

An integrated single-tooth modeling scheme is proposed for the 3D dental model acquired by optical digitizers. The cores of the modeling scheme are fusion regions extraction, single tooth shape restoration, and single tooth separation. According to the "valley" shape-like characters of the fusion regions between two adjoining teeth, the regions of the 3D dental model are analyzed and classified based on the minimum curvatures of the surface.