This study applied for an evaluation of lead in individual samples at Ha Noi. The results showed that 2 of 30 samples (6.7%) have lead contents >0.7Mg/m3. Average, workshop workers are exposed to lead concentration at 2.5 times higher than that of bureau workers
Lead ; Air Pollution

Thousands foundry workers are exposing to lead in Thai Nguyen Industrial zone. Annually, local physician's reports show that the rates of lead poisoning among the foundry workers are 10-20%. Results of an analysis on 36 foundry personal samples showed that the air lead in the foundry area is more than 0.001 mg/m3. Industrial hygiene data also showed a high risk of lead poisoning in Thai Nguyen foundry workers. Recommended measures to reduce the risk are education of lead poisoning and good industrial hygiene practice
Lead ; Lead Poisoning

Recently, air-borne lead sampling by acids and impinge was not reasonable for the personal sample, neither was it for risk assessment of lead poisoning. The application of NMAM for lead exposure dose evaluation deduces that: the personal samples describe well the risk of lead poisoning of the foundry workers. Personal lead samples give mean of 0.012 to 3.460 mg per shift (air borne lead from 0.001 mg/m3 to 0.330 mg/m3). So, the samples are needed and useful for better risk assessment and occupational health care here
Lead ; Lead Poisoning

Water extract of Hypericum patulum Thumb. ex Murr. has been proved to possess the effects of decreasing GPT hepatoyeast and bilirubin, inhibiting anti-cirrhotic, decreasing the amount of colagen by 26.4%, antioxidant, amount of MDA of the treated mice decreased by 22.62%. Water extract of Hypericum patulum Thumb. ex Murr. has chronic anti - inflammatory effect on the model causing experimental granuloma, reducing the mass of tumor by 30.22%. In addition, water extract of Hypericum patulum Thumb. ex Murr. has clearly choleretic activities, increasing the number of producing bile by 78.55% as compared with physiological control group. Water extract of Hypericum patulum Thumb. ex Murr. has promising for a medicament for chronic hepatitis activity.
Plants ; Hepatitis, Chronic ; Plants, Medicinal ; liver ; drugs

Study on the acute toxicity of Hypericum japonicum and Hypericum patulum to determine the ability to treat some diseases of liver. Haft of the upper of Hypericum japonicum Thumb. ex Murr. collected in April, when it having flowers in Ha Tay province. Raw materials have been dried in shade to compound extracts to the experiments. The leaves of Hypericum patulum Thumb. ex Murr. collected in October in Sa Pa. Raw materials have been dried, compounded extracts and mixed the water by this method. Results have shown that at indicated doses, the herbs show no acute toxicity
Toxicity ; Hypericum ; Plant Extracts