Zhong-xu Wang

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Current frequency allocation scheme results in poor spectrum utility. In some frequency bands, the spectrum may not be fully utilized either on geographical or at temporal level. In addition, on some hot spot business frequency bands, spectrum resources become in short supply. Many papers discuss the new spectrum management policies, and the focus is(More)
OBJECTIVE To investigate the work-related musculoskeletal disorders among automobile assembly workers, to discusses the related risk factors and their relationship. METHOD The selected 1508 automobile assembly workers from a north car manufacturing company were regarded as the study object. The hazard zone jobs checklist, Nordic musculoskeletal symptom(More)
OBJECTIVE To investigate the association between polymorphisms of metabolic enzyme genes and chromosomal damage risk in peripheral blood lymphocytes among coke oven workers. METHODS One hundred and fourty-nine coke oven workers and 24 referents without occupational polycyclic aromatic hydrocarbons (PAH) exposure were recruited in this study. Urinary(More)
OBJECTIVE To investigate DNA and chromosome damage in peripheral blood lymphocyte of coke oven workers exposed to polycyclic aromatic hydrocarbons (PAHs). METHODS One hundred and thirty-seven coke oven workers and 50 controls without occupational PAHs exposure were investigated. Comet assay and cytokinesis-block micronucleus (CBMN) detection were used to(More)
OBJECTIVE To investigate the relationship between lymphocyte DNA damage and polycyclic aromatic hydrocarbons (PAHs) exposure in coke oven workers. METHODS Two hundred and thirty-five coke oven workers and 30 controls were selected in this study. Alkaline single-cell gel electrophoresis was used to evaluate the lymphocyte DNA damage, HPLC was employed to(More)
OBJECTIVE To investigate the relationship between the urinary 1-hydroxypyrene level and cytokinesis-block micronucleus and the olive moment of comet assay in peripheral blood lymphocyte in coke oven workers. METHODS One hundred and thirty-three workers from a coke plant and 28 referents without occupational PAH exposure were recruited in this study.(More)
OBJECTIVE To study the distribution of the direct medical cost for the pneumoconiosis and provide a clue for the compensation. METHODS According to the electronic records for the medical cost of pneumoconiosis, 237 patients were investigated with questionnaires. Their medical cost was described by disability levels, types of work, the categories of(More)
OBJECTIVE To study the distribution of the direct medical cost for the pneumoconiosis and to provide the clue for the trauma insurance. METHODS 936 cases including 109,530 records were divided into several groups by the stages of pneumoconiosis and categories of the cost. The groups (stage I, stage II, stage I with tuberculosis and stage II with(More)
OBJECTIVE To investigate the sensitivity to bleomycin (BLM) in peripheral blood lymphocytes (PBL) among coke-oven workers. METHODS Ninty-four coke-oven workers with exposure to a high level of polycyclic aromatic hydrocarbons and 64 non-coke-oven workers (control) were recruited into this study. PBL was challenged by 8 microg/ml BLM, a known carcinogen,(More)