Research on classification method of public hazard levels for natural gas well involving hydrogen sulfide;

Study on Classification Method of Rock Slope Stability in Highway Construction in Mountainous Region;

This paper is mainly about classification for burning behavior of building materials, including differences between the new classification method and the former one.

The article overview the people of the past study the phosphoric ratings method and results,analyses limitations on the tra- ditional soil phosphorus fractionation scheme,points out the function of the studies result that assessment of soil phosphorus fertility.

The study for the effect of resistance appraisal to cercospora black spot by different grade methods in sweet potatoes;

The normal distribution curve grade method of forest tree seeds was suggested in this paper, that is determine the rate of every grade according to the requirement from production, management and user of forest tree seeds, and determine the specific indexes of every grade by using the normal distribution value formula u=(x- x )/s .

Theoretical analysis of estimating data at fitting for grading method;

Introduced several separation methods on lignin in wheat straw material,residual lignin in the pulp,dissolved lignin in the liquid;detailed discussed the application of the UV、IR、NMR spectroscopy in the study of lignin structure.

The effects of some operational factors, such as mononuclear cell separation methods, CB plasma, inoculum density, osmotic pressures , and the preservation of cytokines, on the CB stem/progenitor cell cultures ex vivo were investigated.