Water soluble disperse dyes of either monoazo or anthraquinone types containing the carboxymethylsulfonylgroup（-SO2CH2COOH）were synthesized.Ammonium salts of this type of dyes are more soluble thanother salts.These ...Water soluble disperse dyes of either monoazo or anthraquinone types containing the carboxymethylsulfonylgroup（-SO2CH2COOH）were synthesized.Ammonium salts of this type of dyes are more soluble thanother salts.These dyes are suitable for pad dyeing or printing on polyester fiber and polyester/cottonblends in either weak acid,neutral or weak alkali medium without a dispersing agent.The formation of-SO2CH3 group from -SO2CH2COOH group after fixing on the fiber was proved.展开更多
As a natural macromolecular organic compound,humic acid can promote plant growth.Water soluble humic acid fertilizers refer to liquid or solid water soluble fertilizers made by adding appropriate amounts of nitrogen,p...As a natural macromolecular organic compound,humic acid can promote plant growth.Water soluble humic acid fertilizers refer to liquid or solid water soluble fertilizers made by adding appropriate amounts of nitrogen,phosphorus,potassium macroelements or zinc,boron,iron,molybdenum,manganese,copper and other trace elements or organic matter,based on humic acid in the required proportions for plant growth.In order to verify the application effect of humic acid containing water soluble fertilizer produced by Tai’an Gold Land Chemical Co.,Ltd.,in tomato production in Daiyue District,Tai’an City,a fertilizer effect application experiment of humic acid containing water soluble fertilizer on tomato planting was specially carried out.The results showed that the water soluble fertilizer containing humic acid could obviously improve the agronomic characters of tomato;the yield was significantly increased;the effect of increasing the income of tomato growers was obvious.展开更多
As an important type of emerging pollutants, ecological toxicity and risk of artificial musks are increasingly concerned. Thus, single and joint toxic effects of 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8- hexamethylcyclopenta...As an important type of emerging pollutants, ecological toxicity and risk of artificial musks are increasingly concerned. Thus, single and joint toxic effects of 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8- hexamethylcyclopenta-gamma-2-benzopyran （HHCB） as one of the most widely applied artificial musks and cadmium （Cd） as an toxic metal on zebrafish （Danio rerio） were investigated by the exposure of zebrafish to various concentrations of HHCB or/and Cd in feculent water containing bedloads. The results indicated that the joint effect of HHCB and Cd changed during different exposure times within 120 h. The index of the antioxidant enzyme system including superoxide dismutase （SOD） and perox- idase （POD）, and malondialdehyde （MDA） were sensitive and induced in the zebrafish stressed by Cd, and content of soluble protein （SP） was sensitive to HHCB and could be used as a biomarker for HHCB. Joint effects on antioxidant enzymes depended more on the effect of single Cd in the first one or two days. However, in the rest exposure days, the effect of HHCB began to dominate in the joint effect during the exposure process.展开更多
Using the 3-D sono-elasticity method and the simplified nonstructural mass method,the different dynamic modeling methods of the added water for a single-hull structure are first analyzed in this study.Then,the complet...Using the 3-D sono-elasticity method and the simplified nonstructural mass method,the different dynamic modeling methods of the added water for a single-hull structure are first analyzed in this study.Then,the complete internal flow field method and the simplified nonstructural mass method of the contained water between the double hulls of a double-hull structure are investigated.Finally,based on the calculation and analysis under multiple conditions,a reasonable and simplified dynamic modeling method of added water and contained water is obtained.It is indicated that the mass of added water for a single-hull structure is closely related to the mass of total underwater displacement of the structure.With the increase in the analysis frequency,the mass of added water is characterized by first decreasing rapidly and then decreasing gradually and smoothly.The contained water between the double hulls is distributed to the pressure hull and the light shell based on the ratio of the impedances of the double hulls.The results can basically reflect the acoustic radiation characteristics of the double-hull structure.展开更多
文摘Water soluble disperse dyes of either monoazo or anthraquinone types containing the carboxymethylsulfonylgroup（-SO2CH2COOH）were synthesized.Ammonium salts of this type of dyes are more soluble thanother salts.These dyes are suitable for pad dyeing or printing on polyester fiber and polyester/cottonblends in either weak acid,neutral or weak alkali medium without a dispersing agent.The formation of-SO2CH3 group from -SO2CH2COOH group after fixing on the fiber was proved.
文摘As a natural macromolecular organic compound,humic acid can promote plant growth.Water soluble humic acid fertilizers refer to liquid or solid water soluble fertilizers made by adding appropriate amounts of nitrogen,phosphorus,potassium macroelements or zinc,boron,iron,molybdenum,manganese,copper and other trace elements or organic matter,based on humic acid in the required proportions for plant growth.In order to verify the application effect of humic acid containing water soluble fertilizer produced by Tai’an Gold Land Chemical Co.,Ltd.,in tomato production in Daiyue District,Tai’an City,a fertilizer effect application experiment of humic acid containing water soluble fertilizer on tomato planting was specially carried out.The results showed that the water soluble fertilizer containing humic acid could obviously improve the agronomic characters of tomato;the yield was significantly increased;the effect of increasing the income of tomato growers was obvious.
基金Acknowledgements The authors acknowledge the financial support from the National Natural Science Foundation of China （Grant Nos. 40930739 and 21037002）. The Sino-Russian Joint Research Center on Natural Resources and Eco-Environmental Sciences also gave partial aids in this work.
文摘As an important type of emerging pollutants, ecological toxicity and risk of artificial musks are increasingly concerned. Thus, single and joint toxic effects of 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8- hexamethylcyclopenta-gamma-2-benzopyran （HHCB） as one of the most widely applied artificial musks and cadmium （Cd） as an toxic metal on zebrafish （Danio rerio） were investigated by the exposure of zebrafish to various concentrations of HHCB or/and Cd in feculent water containing bedloads. The results indicated that the joint effect of HHCB and Cd changed during different exposure times within 120 h. The index of the antioxidant enzyme system including superoxide dismutase （SOD） and perox- idase （POD）, and malondialdehyde （MDA） were sensitive and induced in the zebrafish stressed by Cd, and content of soluble protein （SP） was sensitive to HHCB and could be used as a biomarker for HHCB. Joint effects on antioxidant enzymes depended more on the effect of single Cd in the first one or two days. However, in the rest exposure days, the effect of HHCB began to dominate in the joint effect during the exposure process.
基金supported by the National Natural Science Foundation of China(Grant No.51909246)supported by the Nature Science Foundation of Jiangsu Province of China(Grant No.BK20220044).
文摘Using the 3-D sono-elasticity method and the simplified nonstructural mass method,the different dynamic modeling methods of the added water for a single-hull structure are first analyzed in this study.Then,the complete internal flow field method and the simplified nonstructural mass method of the contained water between the double hulls of a double-hull structure are investigated.Finally,based on the calculation and analysis under multiple conditions,a reasonable and simplified dynamic modeling method of added water and contained water is obtained.It is indicated that the mass of added water for a single-hull structure is closely related to the mass of total underwater displacement of the structure.With the increase in the analysis frequency,the mass of added water is characterized by first decreasing rapidly and then decreasing gradually and smoothly.The contained water between the double hulls is distributed to the pressure hull and the light shell based on the ratio of the impedances of the double hulls.The results can basically reflect the acoustic radiation characteristics of the double-hull structure.
