Preliminary Study of the Extent and Progression of Ossification of Posterior Longitudinal Ligament of the Spine and with Nucleotide Pyrophosphatase Gene Polymorphisms;

Henan the second,third land desertification monitoring desertification of land types,the extent of desertification and desertification use types,such as changes in the status quo analysis identified Henan desertification are some of the major issues of governance,then proposes the Henan Province desertification control measure

According to whether to employ the negative words, the negative-responsive sentences are separated into the dominant with negative words and the recessive without negative words, according to the negative extent, separated into the strong, the weak and the general.