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Aims To investigate the association of four single-nucleotide polymorphisms (SNPs) of the IL-6 gene with osteoporosis (OST) susceptibility. Methods PCR restriction fragment length polymorphism (PCR–RFLP) was carried out for SNPs detection. Generalized multifactor dimensionality reduction (GMDR) model and logistic regression model were used to examine the interaction between SNP and obesity on OST...
Researchers pay more attention to the LEO (low earth orbital) collision simulation after the collision of US-Russia satellites this year. In the LEO collision simulation, the positions and the attitudes of LEO satellites and the positions of space debris are simulated, and then the times and the orbital positions of possible collisions are calculated. Since there are large-scale LEO objects, it is...
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