Occupational hazard risk assessment with Singapore exposure semi -quantitative evaluation methods in energy -saving lamp industry / 预防医学

Objective To explore and establish an appropriate occupational risk assessment model for energy -saving lamp industry in China,and further to provide reference for risk management.Methods Based on actual conditions on site of 3 different scale energy -saving lamp manufacture factories,Singapore exposure semi -quantitative evaluation methods was used to analyze and evaluate the harm of the work sites contacted with chemical factors,according to which can provide a proposal for risk management.Results The primary occupational chemical hazards in these 3 factories include carbon monoxide,carbon dioxide,aluminium oxide dust,butyl acetate,mercury metal(vapor)and cement dust(free SiO2 <10%).Mercury -injecting of the big scale one has medium risk besides all work sites have low risks or below.Conclusion This methods has confirmed the actual risk levels of the work sites,using the test data in work place,but has a shortage while the sites contacted with physical agents such as noise and heat.

Sulfation of naringenin by Mucor sp / 中国中药杂志

Naringenin (1) was transformed to three metabolites (2-4) by Mucor sp. Based on LCMS(n)-IT-TOF and NMR spectroscopic data, 2-4 were identified as naringenin-7-O-sulphate, naringenin-4'-O-sulphate, and naringenin-5-O-sulphate, respectively. These results might provide hints to the mammalian/human metabolism of naringenin.

Diversity and in vitro antitumnor activity of endophytic fungi from mangrove plants Xylocarpus / 中国中药杂志

A total of 24 biologically pure entophytic fungal strains were isolated from stems, leaves, and seed coats of Xylocarpus plants by repeated purification, and identified with Internal Transcribed Spacer (ITS) rDNA molecular method, which belonging to 14 genera, 11 families, 9 orders and 3 classes. There were differences in genus and species levels among three plant materials from different habitats and species, and it was found that the strains of Phomopsis and Colletotrichum existed in all three plant materials. In vitro assay of antitumor activity by MTT method revealed that the EtOAc extracts of 15 strains exhibited potent antitumor activity. These results suggest that it is of value for further investigation on the above fungal strains.

Basic Principles of Developing Electronic Medical Tag System / 医疗卫生装备

Objective To develop electronic medical tag system on scientifically,rationally,orderly and efficiently.Methods By analyzing total goals of system development and application requirement of military medical logistics to design rational-ly system function,scan carefully and examine application technology,insist on the independent development and innova-tion,focus on the standardization of equipment and information.Results Through the various tests of the system,the per-formance of the whole system can be met the requirements of tactical specification and perfect effect.Conclusion The de-velopment of equipment must be grasped the military requirements and the technical and non-technical component ele-ment,focus on the technical breakthrough and follow standardization requirements,then the quality of equipment can be guaranteed,and the task of serving for medical support can be accomplished.