1.Determination of fatty acid compositions in hydrogenated palm glycerides by gas chromatography
Xinao LIU ; Zhihao LIU ; Li YIN ; Zhengyu LIU ; Chunmeng SUN ; Jiasheng TU
Drug Standards of China 2024;25(5):506-511
Objective:A gas chromatography analysis system for fatty acid compositions of hydrogenated palm glycerides was established to provide a reference for quality standards of hydrogenated palm glycerides.Methods:In this test,a DB-WAX(30 m ×0.53 mm,1.0 μm)strong polarity gas chromatographic column was employed with an injection volume of 1 μL and a split ratio of 120∶1.The initial column temperature was 70℃,sustained for 2 min,ramped up to 230 ℃ at a rate of 5 ℃ per minute,and maintained for 10 min,with the inlet temperature of 250 ℃ and the detector temperature of 250 ℃.Results:In this experiment,the gas chromatograph-ic method was established successfully to determine fatty acid compositions of hydrogenated palm glycerides.The validated results indicated that the method exhibited well-suited system applicability,specificity and precision,and the RSD(%)fulfilled the requirements.The limit of detection(LOD)and limit of quantification(LOQ)values of nine fatty acid methyl esters were defined,and fatty acid compositions of seven batches of samples were checked successfully.Conclusion:The GC methodology developed in this study is suitable for the analysis and determina-tion of fatty acid compositions in hydrogenated palm glycerides,which can serve as a reference for the quality control of this pharmaceutical excipient and the establishment of quality standards.
2.Analysis and suggestion on the construction of naval physiological and psychological training system based on ISD model
Zhihao TU ; Dong JIANG ; Xiaobei JU ; Changhai WANG ; Chengchao ZHU ; Mingfang SONG
Journal of Navy Medicine 2024;45(10):999-1005
At present,there is a lack of basic theoretical framework in the naval physiological and psychological training in PLA,and relevant researches and practices have not been comprehensively carried out.Based on the instructional system design(ISD),the most classic model in the field of training,we reviewed the latest research results on training from five aspects:training needs assessment,training design,training development,training implementation and training evaluation,and put forward targeted suggestion for the research and practice of naval physiological and psychological training in PLA.The main purpose of this paper is to provide assistance for the construction of naval physiological and psychological training system in PLA.

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