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ObjectiveTo study the ideology within Hazard analysis and critical control point（HACCP） system， the relationship between ideology and HACCP system as well as between those ideologies.MethodsThe discipline idea contained in HACCP system were determined by investigating the connection between HACCP system and disciplines. The top six disciplines related to HACCP system were determined by expert scoring method. The correlation and significance were analyzed by Eviews software to determine significant discipline. The ideas within HACCP system and the relationship between HACCP system ideas were studied through brainstorming method.ResultsThe results showed that the subjects of food， management， mathematics， philosophy， computer and agriculture were correlated to HACCP system. Management， mathematics， philosophy and HACCP system were correlated significantly. Management， as the basis of HACCP system ideological framework， would put more focus on researches based on management theory and method extension. Mathematics， as significant tool of HACCP system research， would put more focus on analysis methods research based on mathematics， such as statistics， probability， model and so on. Philosophy， as ideology framework as HACCP system， would put more focus on ideology and view researches based on philosophy.ConclusionHACCP system contains ideologies of management， mathematics and philosophy. Management is the foundation level as the basic framework of HACCP system. Mathematics is intermediate level， as the basic theory research tool of HACCP system to support further basis research. Philosophy is the highest level as the internalized ideology of HACCP system basis theory， the ideology research of which provides scientific proof for future HACCP system theory and management research.

Ansai oilfield is a typical low-permeability, low pressure, and low productivity reservoir. The new oil well only can be built by fracturing, and most of other wells still need multiple fracturing to improve its productivity. Therefore, the fracturing technology has being actively explored and improved since the 1980s in Ansai oilfield; and has been basically formed two technical systems as "water control" and "volume fracturing". This paper reviews the development of fracturing, analyses the existing technology adapted in Ansai oilfield, and points out developing direction of fracturing technology in order to provide the reference for the similar reservoir. [ABSTRACT FROM AUTHOR]

Objective: To explore the molecular mechanism of a case where RhD genotyping did not match serological results., Methods: The serological results of 8 members from two generations of this family were analyzed. And according to Mendelian law of inheritance, RhD genotyping, zygotic type determination and gene sequencing were performed for the family members., Results: The proband and one of her cousins have the same RhD alleles, both of them have a 336-1G>A intron variant RhD allele and a complete RhD deletion allele. The variant alleles are inherited from two of their parents with blood relationship, while the complete-deleted alleles come from the other. 336-1G>A means that the last base G of the second intron of the RhD gene is mutated to A, which leads to a negative RhD serology and a positive genotype in the proband., Conclusion: There was a rare 336-1G> A intron variant gene (RhD * 01N.25) in this family, which was a recessive gene relative to the RhD gene and resulted in RhD phenotype negative.