Sea ice melt water and circumpolar deep water(CDW)intrusion have important impacts on the ecosystem of the Amundsen Sea.In this study,samples of nutrients and phytoplankton pigments from nine stations in the eastern A...Sea ice melt water and circumpolar deep water(CDW)intrusion have important impacts on the ecosystem of the Amundsen Sea.In this study,samples of nutrients and phytoplankton pigments from nine stations in the eastern Amundsen Sea were collected during the austral summer.Based on in-situ hydrological observations,sea ice density data from satellite remote sensing,and chemical taxonomy calculations,the relationships between environmental factors and phytoplankton biomass and community structure were studied.The results showed that with increasing latitude,the contribution of sea ice melt water(MW%)and the stability of the water body increased,and the depth of the mixed layer(MLD)decreased.The integrated concentration of chlorophyll a(Chl-a)ranged from 21.4 mg·m^(−2) to 148.4 mg·m^(−2)(the average value was 35.7±53.4 mg·m^(−2)).Diatoms(diatoms-A[Fragilariopsis spp.,Chaetoceros spp.,and Proboscia spp.]and diatoms-B[Pseudonitzschia spp.])and Phaeocystis antarctica were the two most widely distributed phytoplankton groups and contributed 32%±16%and 28%±11%,respectively,of the total biomass.The contributions of Dinoflagellates,Chlorophytes,Cryptophytes,the high-iron group of P.antarctica,and Diatom group A were approximately 17%±8%,15%±13%,9%±6%,5%±9%,and 3%±7%,respectively.The area with the highest phytoplankton biomass was located near the ice-edge region,with a short time lag(T_(lag))between sampling and complete sea ice melt and a high MW%,while the area with the second-highest Chl-a concentration was located in the area affected by the upwelling of CDW,with thorough water mixing.Vertically,in the area with a short T_(lag) and a shallow MLD,the phytoplankton biomass and proportion of diatoms decreased rapidly with increasing water depth.In contrast,in the region with a long T_(lag) and limited CDW upwelling,the phytoplankton community was dominated by a relatively constant and high proportion of micro phytoplankton,and the phytoplankton biomass was low and relatively stable vertically.Generally,the phytoplankton community structure and biomass in the study area showed high spatial variation and were sensitive to environmental changes.展开更多
国际癌症研究机构(International Agency for Research on Cancer,IARC)把镍化合物定为Ⅰ类致癌物。国际劳工组织(International Labour Organization,ILO)也把镍化合物列为职业性癌症的致癌因素。目前我国正在修订《职业病分类和目录》...国际癌症研究机构(International Agency for Research on Cancer,IARC)把镍化合物定为Ⅰ类致癌物。国际劳工组织(International Labour Organization,ILO)也把镍化合物列为职业性癌症的致癌因素。目前我国正在修订《职业病分类和目录》,镍化合物所致癌症也可能列入法定职业病。2022年ILO出版的《职业病诊断与接触标准》对镍化合物的致病特征、职业接触情况、主要健康影响、诊断标准及预防关键措施等内容做了详细论述,本文主要对其内容进行介绍,为我国制定相关标准提供依据。展开更多
Yin-yang theory and Wuxing theory are the core parts of Traditional Chinese Medicine（TCM）. Most of researches on Wuxing theory are based on the paradigm of TCM or Traditional Chinese Culture. It is an evitable chall...Yin-yang theory and Wuxing theory are the core parts of Traditional Chinese Medicine（TCM）. Most of researches on Wuxing theory are based on the paradigm of TCM or Traditional Chinese Culture. It is an evitable challenge to interpret Wuxing theory in the term of biomolecular, biochemistry, stem cell and so on. The oxidation of glucose is the important pathway in cell and there are five basic factors which will be responsible for the undergoing of this reaction. The relationships among these factors are similar to Wuxing theory just like inter-promotion and inter-restraint. So, this understanding on Wuxing theory maybe take some advancement for the modernization of TCM.展开更多
Giving the accurate definition of the core part of Traditional Chinese Medicine(TCM) is another way for the modernization of TCM. Many researchers had launched their original researches on this way and realized that q...Giving the accurate definition of the core part of Traditional Chinese Medicine(TCM) is another way for the modernization of TCM. Many researchers had launched their original researches on this way and realized that qi got some characteristics of energy. In this paper, energy is also thought as having the same characteristics as qi for energy is invisible and filled with cell in different patterns. The movement of qi in cell can be understood as the transformations of the chemical energy. So, cell should be regarded as a device which is organized by biomelocules for the transformation from chemical energy to heat energy.展开更多
基金financially supported by National Polar Special Program “Impact and Response of Antarctic Seas to Climate Change” (Grant nos. IRASCC 02-02, 01-01-02)supported by the National Natural Science Foundation of China (Grant nos. 41976228, 41976227, 41506223)the Scientific Research Fund of the Second Institute of Oceanography, MNR (Grant nos. JG1805, JG2011, JG2013)。
文摘Sea ice melt water and circumpolar deep water(CDW)intrusion have important impacts on the ecosystem of the Amundsen Sea.In this study,samples of nutrients and phytoplankton pigments from nine stations in the eastern Amundsen Sea were collected during the austral summer.Based on in-situ hydrological observations,sea ice density data from satellite remote sensing,and chemical taxonomy calculations,the relationships between environmental factors and phytoplankton biomass and community structure were studied.The results showed that with increasing latitude,the contribution of sea ice melt water(MW%)and the stability of the water body increased,and the depth of the mixed layer(MLD)decreased.The integrated concentration of chlorophyll a(Chl-a)ranged from 21.4 mg·m^(−2) to 148.4 mg·m^(−2)(the average value was 35.7±53.4 mg·m^(−2)).Diatoms(diatoms-A[Fragilariopsis spp.,Chaetoceros spp.,and Proboscia spp.]and diatoms-B[Pseudonitzschia spp.])and Phaeocystis antarctica were the two most widely distributed phytoplankton groups and contributed 32%±16%and 28%±11%,respectively,of the total biomass.The contributions of Dinoflagellates,Chlorophytes,Cryptophytes,the high-iron group of P.antarctica,and Diatom group A were approximately 17%±8%,15%±13%,9%±6%,5%±9%,and 3%±7%,respectively.The area with the highest phytoplankton biomass was located near the ice-edge region,with a short time lag(T_(lag))between sampling and complete sea ice melt and a high MW%,while the area with the second-highest Chl-a concentration was located in the area affected by the upwelling of CDW,with thorough water mixing.Vertically,in the area with a short T_(lag) and a shallow MLD,the phytoplankton biomass and proportion of diatoms decreased rapidly with increasing water depth.In contrast,in the region with a long T_(lag) and limited CDW upwelling,the phytoplankton community was dominated by a relatively constant and high proportion of micro phytoplankton,and the phytoplankton biomass was low and relatively stable vertically.Generally,the phytoplankton community structure and biomass in the study area showed high spatial variation and were sensitive to environmental changes.
文摘国际癌症研究机构(International Agency for Research on Cancer,IARC)把镍化合物定为Ⅰ类致癌物。国际劳工组织(International Labour Organization,ILO)也把镍化合物列为职业性癌症的致癌因素。目前我国正在修订《职业病分类和目录》,镍化合物所致癌症也可能列入法定职业病。2022年ILO出版的《职业病诊断与接触标准》对镍化合物的致病特征、职业接触情况、主要健康影响、诊断标准及预防关键措施等内容做了详细论述,本文主要对其内容进行介绍,为我国制定相关标准提供依据。
基金Project Supported by The National Natural Science Foundation of China(81300302)
文摘Yin-yang theory and Wuxing theory are the core parts of Traditional Chinese Medicine（TCM）. Most of researches on Wuxing theory are based on the paradigm of TCM or Traditional Chinese Culture. It is an evitable challenge to interpret Wuxing theory in the term of biomolecular, biochemistry, stem cell and so on. The oxidation of glucose is the important pathway in cell and there are five basic factors which will be responsible for the undergoing of this reaction. The relationships among these factors are similar to Wuxing theory just like inter-promotion and inter-restraint. So, this understanding on Wuxing theory maybe take some advancement for the modernization of TCM.
基金supported by The National Natural Science Foundation of China(81300302)
文摘Giving the accurate definition of the core part of Traditional Chinese Medicine(TCM) is another way for the modernization of TCM. Many researchers had launched their original researches on this way and realized that qi got some characteristics of energy. In this paper, energy is also thought as having the same characteristics as qi for energy is invisible and filled with cell in different patterns. The movement of qi in cell can be understood as the transformations of the chemical energy. So, cell should be regarded as a device which is organized by biomelocules for the transformation from chemical energy to heat energy.
