During the early Silurian, a transgressive and vast shallow sea with flat sea-floor covered the central Tarim Basin (the Tazhong area). The depositional environment of the middle member of the Kalpingtag Formation is ...During the early Silurian, a transgressive and vast shallow sea with flat sea-floor covered the central Tarim Basin (the Tazhong area). The depositional environment of the middle member of the Kalpingtag Formation is controversial. In order to provide a basis for the prediction of reservoir sand, the sedimentary facies are recognized according to abundant core observations and de- scriptions combined with well-log analysis, isograms, seismic interpretations and regional sedimentary background. The middle member of the Kalpingtag Formation, which shows a retrograding sequence, is interpreted as braid-delta deposits influenced by mi- nor tidal reworking. The sources of clasts are from the southern uplift. The subaqueous braid-delta deposits in the study area have some characteristics quite different from the common deltas that generally deposit in marginal seas. Four facies grouped to a delta front association are recognized, ranging from distributary-channel (Facies A), front bar (Facies B), sand sheet (Facies C) and inter- distributary bay (Facies D). The distributary channels construct the sandbody framework of the delta front. Front bar deposits, which are fine-grained with low depositional dips, display a near-continuous sand strip around the entire periphery of the delta. Sand sheet deposits are mainly found in front of Facies B, gradationally contacting with the prodelta. The interdistributary bay is essentially the uppermost unit capping the channel sequence and generally made up of laminated and massive mudstones. The delta front deposits display extensive sheet-like bodies contrasting with the characteristic wedge shapes of common subaqueous delta bodies. The bi- modal cross-stratification and mud drapes in the fine- to medium-grained sandstone in the distal area are inferred to reflect high-energy tidal processes.展开更多
Rapid industrialization in Vietnam has resulted in the difficult task of finding means to properly manage the generation of industrial waste. In an attempt to deal with this problem, the Vietnamese government revised ...Rapid industrialization in Vietnam has resulted in the difficult task of finding means to properly manage the generation of industrial waste. In an attempt to deal with this problem, the Vietnamese government revised the Law on Environmental Protection of 2005, with which it imposed strict regulations on industrial waste generators and the waste they discharge. However, questions remain about the current industrial solid waste management system because of the discrepancy between the ideals embodied in the Law and the actual practices occurring in industry. We report here on the effectiveness of governmental policies, focusing on environmental performance in industrial zones in Ho Chi Minh City （HCMC）, Vietnam. We examined government records, and reports from waste generators, as well as waste treatment methods at sites. In addition, on-site surveys were carried out at 44 companies in HCMC in 2009 and 2010 to obtain a better understanding of the companies＇ handling of and attitude toward the industrial waste they produced. Our results show that the incoherence of the revised Law and regulations in industrial waste management has caused a serious pressure on domestic landfills. We conclude that there is a strong need for change in the current regulatory and management system in order to increase the effectiveness of environmental management for future sustainable development.展开更多
Glutathione S-transferases （GSTs） are phase II enzymes that facilitate the detoxification of xenobioties and play important roles in antioxidant defense. We investigated the expression patterns of seven Venerupis ph...Glutathione S-transferases （GSTs） are phase II enzymes that facilitate the detoxification of xenobioties and play important roles in antioxidant defense. We investigated the expression patterns of seven Venerupis philippinarum GSTs （VpGSTs） and four Mytilus galloprovincialis GSTs （MgGSTs） following exposure to BDE-47. Differential expressions of the seven VpGSTs and four MgGSTs transcripts were observed, with differences between the hepatopancreas and gills. Among these GSTs, the sigma classes （VpGSTS1, VpGSTS2, VpGSTS3, MgGST1, and MgGST3） were highly expressed in response to BDE-47 exposure, demonstrating their potential as molecular biomarkers for environmental biomonitoring studies. We obtained the three-dimensional crystal structures of VpGSTs and MgGSTs by homologous modeling. A model to elucidate the binding interactions between the ligands and receptors was defined by molecular docking, Hydrophobic and n were the most often observed interactions between BDE-47 and the GSTs.展开更多
Objective： To investigate the effects of moxibustion on the serum metabolism in healthy human body based on the 1H nuclear magnetic resonance （1H NMR） metabolomics technology, and to find the differences in metabol...Objective： To investigate the effects of moxibustion on the serum metabolism in healthy human body based on the 1H nuclear magnetic resonance （1H NMR） metabolomics technology, and to find the differences in metabolites, as well as to elucidate the effects of moxibustion on healthy human body from the viewpoint of global metabolism. Methods： Sixty subjects of healthy young men from the enrolled students were randomly divided into a moxibustion group and a control group using random number table, with 30 cases in each group. Subjects in the moxibustion group accepted mild moxibustion on the right Zusanli （ST 36）, once a day, 15 min for each time, and continuous treatment for 10 d; those in the control group did not receive any intervention. There were 28 cases in the moxibustion group and 23 cases in the control group after interventions. On the 2st day, 5th day and lOth day of the intervention, serum samples were collected from subjects of the two groups, and metabolic spectra were obtained by the 1H NMR technology. Results： Before and after the intervention, serum 1H NMR of the moxibustion group was significantly different, while the difference was insignificant in the control group. Metabolite changes in the moxibustion group were mainly in low density lipoprotein （LDL）/very low density lipoprotein （VLDL）, valine, isoleucine, leucine, lactic acid, glutamine, citric acid, polyunsaturated fatty acids, creatine, glycine, glycerol, glucose, tyrosine, histidine, formic acid, alanine, lysine, acetic acid, and glutamic acid. Conclusion： Moxibustion can cause changes of serum metabolic patterns in healthy human by influencing the concentrations of branched-chain amino acids, polyunsaturated fatty acids, and other metabolites to strengthen body＇s metabolisms of amino acids and fatty acid.展开更多
文摘During the early Silurian, a transgressive and vast shallow sea with flat sea-floor covered the central Tarim Basin (the Tazhong area). The depositional environment of the middle member of the Kalpingtag Formation is controversial. In order to provide a basis for the prediction of reservoir sand, the sedimentary facies are recognized according to abundant core observations and de- scriptions combined with well-log analysis, isograms, seismic interpretations and regional sedimentary background. The middle member of the Kalpingtag Formation, which shows a retrograding sequence, is interpreted as braid-delta deposits influenced by mi- nor tidal reworking. The sources of clasts are from the southern uplift. The subaqueous braid-delta deposits in the study area have some characteristics quite different from the common deltas that generally deposit in marginal seas. Four facies grouped to a delta front association are recognized, ranging from distributary-channel (Facies A), front bar (Facies B), sand sheet (Facies C) and inter- distributary bay (Facies D). The distributary channels construct the sandbody framework of the delta front. Front bar deposits, which are fine-grained with low depositional dips, display a near-continuous sand strip around the entire periphery of the delta. Sand sheet deposits are mainly found in front of Facies B, gradationally contacting with the prodelta. The interdistributary bay is essentially the uppermost unit capping the channel sequence and generally made up of laminated and massive mudstones. The delta front deposits display extensive sheet-like bodies contrasting with the characteristic wedge shapes of common subaqueous delta bodies. The bi- modal cross-stratification and mud drapes in the fine- to medium-grained sandstone in the distal area are inferred to reflect high-energy tidal processes.
文摘Rapid industrialization in Vietnam has resulted in the difficult task of finding means to properly manage the generation of industrial waste. In an attempt to deal with this problem, the Vietnamese government revised the Law on Environmental Protection of 2005, with which it imposed strict regulations on industrial waste generators and the waste they discharge. However, questions remain about the current industrial solid waste management system because of the discrepancy between the ideals embodied in the Law and the actual practices occurring in industry. We report here on the effectiveness of governmental policies, focusing on environmental performance in industrial zones in Ho Chi Minh City （HCMC）, Vietnam. We examined government records, and reports from waste generators, as well as waste treatment methods at sites. In addition, on-site surveys were carried out at 44 companies in HCMC in 2009 and 2010 to obtain a better understanding of the companies＇ handling of and attitude toward the industrial waste they produced. Our results show that the incoherence of the revised Law and regulations in industrial waste management has caused a serious pressure on domestic landfills. We conclude that there is a strong need for change in the current regulatory and management system in order to increase the effectiveness of environmental management for future sustainable development.
基金Supported by the National Natural Science Foundation of China(No.21107136)the International Foundation for Science(No.F/5230-1)
文摘Glutathione S-transferases （GSTs） are phase II enzymes that facilitate the detoxification of xenobioties and play important roles in antioxidant defense. We investigated the expression patterns of seven Venerupis philippinarum GSTs （VpGSTs） and four Mytilus galloprovincialis GSTs （MgGSTs） following exposure to BDE-47. Differential expressions of the seven VpGSTs and four MgGSTs transcripts were observed, with differences between the hepatopancreas and gills. Among these GSTs, the sigma classes （VpGSTS1, VpGSTS2, VpGSTS3, MgGST1, and MgGST3） were highly expressed in response to BDE-47 exposure, demonstrating their potential as molecular biomarkers for environmental biomonitoring studies. We obtained the three-dimensional crystal structures of VpGSTs and MgGSTs by homologous modeling. A model to elucidate the binding interactions between the ligands and receptors was defined by molecular docking, Hydrophobic and n were the most often observed interactions between BDE-47 and the GSTs.
基金supported by National Basic Research Program of China 973 Program(No.2015CB554502)National Natural Science Foundation of China(No.81202770+4 种基金No.81574082)Special Research Fund for the Doctoral Program of Higher Education of China for New Teachers(No.20124323120002)Foundation for the Author of Excellent Doctoral Dissertation of Hunan Province(No.YB2013B037)Fund Project of Hunan Province Education Office(No.14B129)2015 Graduate Student Research Innovation Project of Hunan Province(No.CX2015B320)~~
文摘Objective： To investigate the effects of moxibustion on the serum metabolism in healthy human body based on the 1H nuclear magnetic resonance （1H NMR） metabolomics technology, and to find the differences in metabolites, as well as to elucidate the effects of moxibustion on healthy human body from the viewpoint of global metabolism. Methods： Sixty subjects of healthy young men from the enrolled students were randomly divided into a moxibustion group and a control group using random number table, with 30 cases in each group. Subjects in the moxibustion group accepted mild moxibustion on the right Zusanli （ST 36）, once a day, 15 min for each time, and continuous treatment for 10 d; those in the control group did not receive any intervention. There were 28 cases in the moxibustion group and 23 cases in the control group after interventions. On the 2st day, 5th day and lOth day of the intervention, serum samples were collected from subjects of the two groups, and metabolic spectra were obtained by the 1H NMR technology. Results： Before and after the intervention, serum 1H NMR of the moxibustion group was significantly different, while the difference was insignificant in the control group. Metabolite changes in the moxibustion group were mainly in low density lipoprotein （LDL）/very low density lipoprotein （VLDL）, valine, isoleucine, leucine, lactic acid, glutamine, citric acid, polyunsaturated fatty acids, creatine, glycine, glycerol, glucose, tyrosine, histidine, formic acid, alanine, lysine, acetic acid, and glutamic acid. Conclusion： Moxibustion can cause changes of serum metabolic patterns in healthy human by influencing the concentrations of branched-chain amino acids, polyunsaturated fatty acids, and other metabolites to strengthen body＇s metabolisms of amino acids and fatty acid.
