Zong Baihua’s aesthetic character and the creative philosophy of small poems are integrated and intertwined with each other,with distinctive aesthetic characteristics and unique artistic concepts.Whether it is his“r...Zong Baihua’s aesthetic character and the creative philosophy of small poems are integrated and intertwined with each other,with distinctive aesthetic characteristics and unique artistic concepts.Whether it is his“rounded and integrated aesthetics centered on Chinese art”,“vivid and charming natural cosmology”,or“personality aesthetics that mutually mirrors with the nature universe”,they all have extraordinary inspirations and guidance for us today to explore the reform of new literature and art,the reform of new poems,and even the contemplation of the cosmos,society,and life,with positive and profound significance.展开更多
The bioavailability of five divalent cationic heavy metals （Pb, Cd, Cu, Zn and Ni） in 10 superficial sediment samples from Baihua Lake was assessed based on the molar ratio of simultaneously extracted metals （SEMs...The bioavailability of five divalent cationic heavy metals （Pb, Cd, Cu, Zn and Ni） in 10 superficial sediment samples from Baihua Lake was assessed based on the molar ratio of simultaneously extracted metals （SEMs） to acid volatile sulfide （AVS）. Atomic absorption spectrometry （AAS） and X-ray powder diffraction （XRD） were used to determine the heavy metal concentrations and examine the mineralogy of the crystalline phases, respectively. The AVS loadings in sediments from Baihua Lake ranged from 64.30 to 350.08 ~rnol/g （dry weight）. The corresponding SEM levels for the sampling sites varied from 1.770 to 14.660 vrnol/g. The molar ratio of SEMs to AVS ranged from 0.014 to 0.084 with a mean value of 0.034. The XRD analysis also confirmed the presence of some metal sulfides in sediments from Baihua Lake. The SEMs/AVS ratios for all sampling sites were significantly lower than 1.0, indicating that AVS in the sediments was sufficient to bind the five heavy metals; thus, these heavy metals are currently not significantly bioavailable to benthic organisms. Comparing the SEMs results to published guideline values for metal toxicity to benthic organisms in sediments, however, suggests that Zn and Ni pose a risk at some sampling locations in Baihua Lake.展开更多
[Objectives]The study aimed to evaluate the safety of Tongchui Baihua capsule.[Methods]Long-term toxicology experiment was adopted,the rats were randomly divided into control group and administration group according t...[Objectives]The study aimed to evaluate the safety of Tongchui Baihua capsule.[Methods]Long-term toxicology experiment was adopted,the rats were randomly divided into control group and administration group according to the gender of male and female;the drug administration group was given different doses of Tongchui Baihua capsules,and the drug was administered by continuous gavage for 13 weeks;the general conditions,haematological indexes,blood biochemical indexes and visceral coefficients of the rats were detected at the 13th week and 4 weeks after the drug withdrawal respectively,and the toxic symptoms were observed.[Results]The rats were given Tongchui Baihua capsule in different doses by gavage for 13 weeks,and no obvious toxicity was observed in weight,haematological indexes,blood biochemical indexes and histopathology.[Conclusions]Under the condition of long-term toxicity experiment,Tongchui Baihua capsule was safe for rats.展开更多
Water quality of Lake Baihua was found worsening in the autumn of l994. Studieshave shown that the decomposition of organic matter in the upper-level sediments resulted inseasonal anoxia with the release of P, Mn, and...Water quality of Lake Baihua was found worsening in the autumn of l994. Studieshave shown that the decomposition of organic matter in the upper-level sediments resulted inseasonal anoxia with the release of P, Mn, and S2- from the sediments to the overlying watercolumn, and the increase of NO-2 concentration led to blackening of the water column, death offishes and secondary Mn pollution.展开更多
文摘Zong Baihua’s aesthetic character and the creative philosophy of small poems are integrated and intertwined with each other,with distinctive aesthetic characteristics and unique artistic concepts.Whether it is his“rounded and integrated aesthetics centered on Chinese art”,“vivid and charming natural cosmology”,or“personality aesthetics that mutually mirrors with the nature universe”,they all have extraordinary inspirations and guidance for us today to explore the reform of new literature and art,the reform of new poems,and even the contemplation of the cosmos,society,and life,with positive and profound significance.
基金Supported by the National Natural Science Foundation of China(No.20967003)the Project of the Government of Guiyang City(No.[2010]5-2)
文摘The bioavailability of five divalent cationic heavy metals （Pb, Cd, Cu, Zn and Ni） in 10 superficial sediment samples from Baihua Lake was assessed based on the molar ratio of simultaneously extracted metals （SEMs） to acid volatile sulfide （AVS）. Atomic absorption spectrometry （AAS） and X-ray powder diffraction （XRD） were used to determine the heavy metal concentrations and examine the mineralogy of the crystalline phases, respectively. The AVS loadings in sediments from Baihua Lake ranged from 64.30 to 350.08 ~rnol/g （dry weight）. The corresponding SEM levels for the sampling sites varied from 1.770 to 14.660 vrnol/g. The molar ratio of SEMs to AVS ranged from 0.014 to 0.084 with a mean value of 0.034. The XRD analysis also confirmed the presence of some metal sulfides in sediments from Baihua Lake. The SEMs/AVS ratios for all sampling sites were significantly lower than 1.0, indicating that AVS in the sediments was sufficient to bind the five heavy metals; thus, these heavy metals are currently not significantly bioavailable to benthic organisms. Comparing the SEMs results to published guideline values for metal toxicity to benthic organisms in sediments, however, suggests that Zn and Ni pose a risk at some sampling locations in Baihua Lake.
文摘[Objectives]The study aimed to evaluate the safety of Tongchui Baihua capsule.[Methods]Long-term toxicology experiment was adopted,the rats were randomly divided into control group and administration group according to the gender of male and female;the drug administration group was given different doses of Tongchui Baihua capsules,and the drug was administered by continuous gavage for 13 weeks;the general conditions,haematological indexes,blood biochemical indexes and visceral coefficients of the rats were detected at the 13th week and 4 weeks after the drug withdrawal respectively,and the toxic symptoms were observed.[Results]The rats were given Tongchui Baihua capsule in different doses by gavage for 13 weeks,and no obvious toxicity was observed in weight,haematological indexes,blood biochemical indexes and histopathology.[Conclusions]Under the condition of long-term toxicity experiment,Tongchui Baihua capsule was safe for rats.
文摘Water quality of Lake Baihua was found worsening in the autumn of l994. Studieshave shown that the decomposition of organic matter in the upper-level sediments resulted inseasonal anoxia with the release of P, Mn, and S2- from the sediments to the overlying watercolumn, and the increase of NO-2 concentration led to blackening of the water column, death offishes and secondary Mn pollution.
