ABSTRACT
ObjectiveTo learn the status quo of pre-job training,on-the-job training and the demands of training among community health service staff,and to provide evidence of continuing education.MethodsInvestigation was made by self-designed questionnaire in 335 community health service staff from ten service centers and seven service stations in four regions of Guangdong province.Results The rate of pre-job training and on-the-job training were lower than the training demands among community health service staff.The content of on-the-job training was varied and could meet the training needs.Training was maily done in superior hospitals and the main form of training was seminars and classroom teaching.ConclusionTraining efforts should be increased to meet the training demands.Training model should be innovated to improve the training effect.Hospital and community exchanges should be strengthened and the training system should be improved.
ABSTRACT
The degradation performance and tissue compatibility of polyphosphazene/polyester or polyanhydride (PGP/PLGA or PGP/PSTP) blend films were investigated in mice. The results showed that the blend degradation rate could be regulated by adjusting PLGA or PSTP content in the blends. For example, the weight loss of PGP/PLGA (70:30 by wt) film was 68.4% after 55 days, whereas that of PGP/PSTP (70:30 by wt) was 88.5% only after 12 days. Also the mechanisms for in vivo degradation of blends of PGP/PLGA and PGP/PSTP were hydrolysed enzymatically and non-enzymatically, respectively. The tissue compatibility of PGP/PLGA was better than that of PGP/PSTP, and an increase of the percentage of PGP in PGP/PSTP blends would help improve the tissue compatibility. These findings suggested that polyphosphazene blends be potential materials applied in medical field.
Subject(s)
Animals , Mice , Biocompatible Materials , Chemistry , Organophosphorus Compounds , Chemistry , Polyesters , Chemistry , Polymers , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To study the respiratory system injury in fur processing environment.</p><p><b>METHODS</b>Environmental fungal survey was conducted in the fur processing procedures. Investigation of respiratory symptoms and chest X-ray examination were also carried out in 138 fur processing workers and 40 control workers. At the same time, the serum antibodies to fungi were analyzed by ELISA.</p><p><b>RESULTS</b>Fungal number(629-3,681 cfu/m3) in fur processing procedures was much higher than those in the control environment. Cladosporium and Alternaria were the leading strains of fungi in fur processing procedures. The rates of respiratory symptoms(cough, sputum, chest tightness, dyspnea, and fever) in fur processing workers were higher than those in the control workers. The rates of the symptoms in female workers were 37.9%, 28.4%, 10.5%, 22.1%, 4.2%, respectively. Abnormalities of chest X ray were found in 7 workers. The serum antibodies to Cladosporium and Alternaria(A450 nm 0.631, 0.724, respectively) in fur workers were significantly higher than those in the control workers(P < 0.05). The positive rates of the antibodies to Cladosporium and Alternaria(44.2%, 42.8%) were significantly higher than those in the control workers(P < 0.01).</p><p><b>CONCLUSION</b>Cladosporium and Alternaria may be the pathogens of occupational respiratory diseases in fur processing workers.</p>