ABSTRACT
The distribution characteristics of the content of As, Cr, Cu, Hg, Pb, Zn, and Cd were researched based on the geochemical analysis of 159 surface sediment samples in Haikou Bay, Puqian Bay, Dongzhai Harbor, and Mulan Bay Mathematical statistics methods were used to interpret the sources of heavy metals, and the main controlling factors for heavy metal distribution were confirmed, having been analyzed qualitatively and semi-quantitatively. The results showed that the average contents of As, Cd, Cr, Cu, Hg, Pb, and Zn were 8.40, 0.06, 32.50, 8.32, 0.02, 18.77, and 35.87 µg·g-1, respectively. High contents of Cr, Cu, Hg, Pb, and Zn are mainly distributed in estuaries and harbors. The content of As increased gradually from south to north in the research area, while Cd gathered mainly in Haikou Bay. The source of Cu, Zn, Hg, Pb, Cr, and Cd in sediment was terrestrial input, which was controlled by anthropogenic pollution and migration of weathered products from mother rock. The source of As could be overseas material input. The grain size of sediment was the main factor controlling the contents of Cu, Zn, Hg, Pb, and Cr, and it was found that sediments with a finer grain size have more heavy metals adsorbed. The high As content was controlled mainly by the natural geological background factor, while the content of Cd reflected the difference in regional pollution caused by differing development in cities. Three surface sediment samples were evaluated as class â ¡ of the National Marine Sediment Standard due to the content of As, while six surface sediment samples were evaluated as class â ¡ due to the content of Cr, of which the pollution degree was moderate. The concentrations of Cd, Cu, Hg, Pb, and Zn in all of the 159 sediment samples fall in the â class, of which the pollution degree is low. The degree of pollution for seven heavy metals were arranged in the following order:As > Cr > Pb > Zn > Cu > Cd > Hg. The potential ecological risk assessment results indicated that all heavy metals in surface sediment caused low levels of pollution generally, and that each heavy metal element was at a low ecological risk level. The order for the ecological risk of the seven heavy metals was:As > Hg > Cd > Pb > Cu > Cr > Zn; therefore, As was the main ecological risk factor. In general, the potential ecological risk for heavy metals was low, which illustrated that the marine environment in the study area was excellent.
ABSTRACT
OBJECTIVE: To evaluate the clinical effects of comprehensive therapy of psychological intervention and rehabilitation training on the mental health of the patients with acute stroke. METHODS: A total of 120 patients with acute stroke were randomly divided into trial group and control group. Both groups were given the corresponding drug therapy, medical basic nursing and convention nursing. Besides, psychological intervention and comprehensive rehabilitation training were added to the trial group. SCL-90, Europ stroke scales (ESS) score were assessed with each patient on day 3 for the first time and on day 21 for the second time; Barthel index was assessed on the day 90. RESULTS: After psychological intervention, SCL-90 declined significantly in the trial group comparing with the control group, there were significant differences in the somatization, obsession, depression, anxiety, fear, ESS score, Barthel index and other psychological factors between the trial group and control group (P < 0.05). CONCLUSIONS: Comprehensive therapy of early psychological intervention and rehabilitation training can significantly improve the mental health, limb movement function, stress ability and activity of daily living on the patients with acute stroke.
Subject(s)
Rehabilitation/methods , Stroke Rehabilitation , Stroke/physiopathology , Female , Humans , Male , Middle Aged , Physical Therapy Modalities , Psychological Techniques , Severity of Illness Index , Treatment OutcomeABSTRACT
OBJECTIVE: To evaluate the clinical effects of psychological interventions and drug therapy against peptic ulcer. METHODS: 96 patients with peptic ulcer were divided into control group with Tagamet 800 mg per evening p.o. and trial group with psychological intervention on the basis of drug treatment. RESULTS: There were significant differences between the two groups (P<0.05), the trial group showed that the anxiety and depression cases declined obviously and effective rate of ulcer therapy was much higher than control group. CONCLUSIONS: In sum, psychological intervention combined with drug therapy provides an effective method for ulcer treatment.