Characterization and Effect of a Nematophagous Fungus sp. nov. for the Biological Control of Corn Cyst Nematode.

The dynamic of plant-parasitic nematode populations in soil is closely related to soil microorganisms. Fungi from cysts were isolated to explore the phenomenon of decline in the population in the soil. Phylogenetic study of partial ITS, , , and gene sequences, in addition to morphological investigations, was utilized to identify a nematode-destroying fungus.

[Precise tooth preparation technique guided by 3D printing guide plate with quantitative hole].

The minimum amount of tooth preparation that can be fully controlled is crucial in achieving long-term, stable, and effective aesthetic restoration, which is also a major difficulty in aesthetic restoration. The tooth preparation can be imple-mented efficiently and accurately through digital technology based on the fixed-deep hole guiding technology. Prior the actual tooth preparation, the technology first designs the virtual contour, layering, and virtual occlusion of the prosthesis on the computer.

[Precise implant insertion technology for measuring dental implant placement].

Identifying the ideal implantation site is important for the long-term stability and effectiveness of follow-up restorations. Implant surgical guide and navigation are used to determine the implantation site in clinic and improve the precision of implantation. However, due to difficulties in digital methods, such as multiple procedures, high cost, and actual accuracy of more than 1 mm, many physicians still prefer to operate with free hand.

Ethyl 5-{[(E)-2-(isonicotinoyl)hydrazinyl-idene]methyl}-3,4-dimethyl-1H-pyrrole-2-carboxyl-ate dihydrate.

In the title compound, C(16)H(18)N(4)O(3)·2H(2)O, the dihedral angle between the pyrrole and pyridine rings in the hydrazone mol-ecule is 7.12 (3)°. In the crystal structure, inter-molecular N-H⋯O, O-H⋯N and O-H⋯O hydrogen bonds link the hydrazone and water mol-ecules into double layers parallel to (101).