The technology of black coloring for stainless steel by electrochemical method was studied. The optimum bath compositions and operating conditions were obtained as follows: 4050g/L K2Cr2O7 , 1520g/L MnSO4, 1520g/L （...The technology of black coloring for stainless steel by electrochemical method was studied. The optimum bath compositions and operating conditions were obtained as follows: 4050g/L K2Cr2O7 , 1520g/L MnSO4, 1520g/L （NH4）2SO4, 2040g/L H3BO3, 2030 g/L additive A, 2 g/L （NH4）6Mo7O 24 ; time 920 min; temperature 1530℃; potential 3V and current density 12mA/cm 2 . The effects of the compositions of the bath on the quality of black colored film were discussed. The influences of passivation process on the black coloring velocity and performances of black colored film layer were investigated. The results show that the passivation process can improve the corrosion resistance and the stability to bear color-change; （NH4）2SO4 can control the black coloring velocity and prolong black coloring bath life remarkably; and additive A can improve the evenness and compactness of black colored film layer. The results of scanning electron microscopy and energy dispersive spectra show that the microstructure is of cylindrical lump, the filling process can decrease the crackles, and the main elements of black colored film are Fe, Cr, Mn and Ni.展开更多
The River Nyong is situated in Akonolinga (central-south of Cameroon). In order to search for raw materials in ceramic use, samples of alluvium obtained from the deposits in the Nyong River clays have been studied. Th...The River Nyong is situated in Akonolinga (central-south of Cameroon). In order to search for raw materials in ceramic use, samples of alluvium obtained from the deposits in the Nyong River clays have been studied. The results obtained show that, the samples contain important quantity of organic matter and the soil is acidic .These two parameters are necessary to understand the origin of the characteristic color of alluvium and water of the River Nyong.展开更多
From the perspective of black feminism, the feminist consciousness in the novel The Color Purple can be disclosed utterly that Sofia, the supporting role, faces the oppression of the three Giant Mountains, namely, the...From the perspective of black feminism, the feminist consciousness in the novel The Color Purple can be disclosed utterly that Sofia, the supporting role, faces the oppression of the three Giant Mountains, namely, the whites, the black males, and the black females.展开更多
Under tremendous pressure, the heroine Nina of the movie Black Swan transformed from purity to complexity, from depression to release. Her attitude towards art changed from imperfection into perfection. Though she fin...Under tremendous pressure, the heroine Nina of the movie Black Swan transformed from purity to complexity, from depression to release. Her attitude towards art changed from imperfection into perfection. Though she finally gets success for her perfect performance, yet she gets it at the cost of her life. From the standpoints of figurative meanings of, the four main colorsblack, white, pink, grey, this paper tries to analyze the relationship between colors, the connection of their roles, the multiple meanings of black swan and the death of black swan. A conclusion can be reached as follows: white represents purity and innocence of Nina; pink stands for her girlishness and na?ve; grey, the transitional color in movie, represents Thomas and his overwhelmingly primitive temptation; the typical representatives of black are Lily, Beth and changed Nina and it also stands for ferity, release and sexual temptation.展开更多
Written by Alice Walker,one of the most influential African-American woman writers in American literary circle,The Color Purple is an epistolary novel consisting of 92 letters with the life experience of a black woman...Written by Alice Walker,one of the most influential African-American woman writers in American literary circle,The Color Purple is an epistolary novel consisting of 92 letters with the life experience of a black woman named Celie who quests for her identity and independence in a male-dominated society with white supremacy,which embodies the awakening of black female’s self-consciousness both in gender and race.This paper is devoted to analyze how Celie walks out of the traditional ideology and constructs her gender identity and race identity from the perspective of black feminism.展开更多
Chinese Color Words two words have a higher degree turn and turn-grade class degree,they are "white"(white) and "black"(black),these two sets of words are generally located on human color perceptio...Chinese Color Words two words have a higher degree turn and turn-grade class degree,they are "white"(white) and "black"(black),these two sets of words are generally located on human color perception of the system the top three,we believe that the typical basic color terms most likely to turn and turn-grade class,but different history,culture and other aspects of cognition,cross-grammatical category they are different order.Based on this,in English and Chinese Basic Color Terms "Black" and "White" Cognitive Semantic Analysis of the research topic,this in-depth study of this aspect of the study hope to be beneficial to help.展开更多
The Changjiang （Yangtze） Estuary is located in the East China Sea shelf with shallow water. Affected by the tide mixing and the runoff of the Changjiang River and the Qiantang River the turbidity is very high. Gener...The Changjiang （Yangtze） Estuary is located in the East China Sea shelf with shallow water. Affected by the tide mixing and the runoff of the Changjiang River and the Qiantang River the turbidity is very high. Generally, the water-leaving radiance is high in the turbid water because of the large particle scattering. Based on the in-situ data and ocean color remote sensing data of SeaWiFS, it was found that there was a black water region with the normalized water-leaving radiances less than 0.5 mW/（cm2-μm2-sr）. The optical principle of the occurrence of this black water was analyzed by the inherent optical properties and the ocean color components. The results show that black water is caused by the relative low values of the suspended particle matter concentration and the back scattering ratio. In the black water region, the percentage of the phytoplankton absorption was relatively high, and the large size of the phytoplankton caused the low value of the particle backscattering ratio.展开更多
基金Project(04JJ40036) supported by the Natural Science Foundation of Hunan Province
文摘The technology of black coloring for stainless steel by electrochemical method was studied. The optimum bath compositions and operating conditions were obtained as follows: 4050g/L K2Cr2O7 , 1520g/L MnSO4, 1520g/L （NH4）2SO4, 2040g/L H3BO3, 2030 g/L additive A, 2 g/L （NH4）6Mo7O 24 ; time 920 min; temperature 1530℃; potential 3V and current density 12mA/cm 2 . The effects of the compositions of the bath on the quality of black colored film were discussed. The influences of passivation process on the black coloring velocity and performances of black colored film layer were investigated. The results show that the passivation process can improve the corrosion resistance and the stability to bear color-change; （NH4）2SO4 can control the black coloring velocity and prolong black coloring bath life remarkably; and additive A can improve the evenness and compactness of black colored film layer. The results of scanning electron microscopy and energy dispersive spectra show that the microstructure is of cylindrical lump, the filling process can decrease the crackles, and the main elements of black colored film are Fe, Cr, Mn and Ni.
文摘The River Nyong is situated in Akonolinga (central-south of Cameroon). In order to search for raw materials in ceramic use, samples of alluvium obtained from the deposits in the Nyong River clays have been studied. The results obtained show that, the samples contain important quantity of organic matter and the soil is acidic .These two parameters are necessary to understand the origin of the characteristic color of alluvium and water of the River Nyong.
文摘From the perspective of black feminism, the feminist consciousness in the novel The Color Purple can be disclosed utterly that Sofia, the supporting role, faces the oppression of the three Giant Mountains, namely, the whites, the black males, and the black females.
文摘Under tremendous pressure, the heroine Nina of the movie Black Swan transformed from purity to complexity, from depression to release. Her attitude towards art changed from imperfection into perfection. Though she finally gets success for her perfect performance, yet she gets it at the cost of her life. From the standpoints of figurative meanings of, the four main colorsblack, white, pink, grey, this paper tries to analyze the relationship between colors, the connection of their roles, the multiple meanings of black swan and the death of black swan. A conclusion can be reached as follows: white represents purity and innocence of Nina; pink stands for her girlishness and na?ve; grey, the transitional color in movie, represents Thomas and his overwhelmingly primitive temptation; the typical representatives of black are Lily, Beth and changed Nina and it also stands for ferity, release and sexual temptation.
文摘Written by Alice Walker,one of the most influential African-American woman writers in American literary circle,The Color Purple is an epistolary novel consisting of 92 letters with the life experience of a black woman named Celie who quests for her identity and independence in a male-dominated society with white supremacy,which embodies the awakening of black female’s self-consciousness both in gender and race.This paper is devoted to analyze how Celie walks out of the traditional ideology and constructs her gender identity and race identity from the perspective of black feminism.
文摘Chinese Color Words two words have a higher degree turn and turn-grade class degree,they are "white"(white) and "black"(black),these two sets of words are generally located on human color perception of the system the top three,we believe that the typical basic color terms most likely to turn and turn-grade class,but different history,culture and other aspects of cognition,cross-grammatical category they are different order.Based on this,in English and Chinese Basic Color Terms "Black" and "White" Cognitive Semantic Analysis of the research topic,this in-depth study of this aspect of the study hope to be beneficial to help.
基金The National Basic Research and Development Program ("973" Program) of China under contract No2009CB421202the National Natural Science Foundation of China under contract No 40706061the National High Technol-ogy Development Program ("863" Program) of China under contract Nos 2007AA12Z137 and 2008AA09Z104
文摘The Changjiang （Yangtze） Estuary is located in the East China Sea shelf with shallow water. Affected by the tide mixing and the runoff of the Changjiang River and the Qiantang River the turbidity is very high. Generally, the water-leaving radiance is high in the turbid water because of the large particle scattering. Based on the in-situ data and ocean color remote sensing data of SeaWiFS, it was found that there was a black water region with the normalized water-leaving radiances less than 0.5 mW/（cm2-μm2-sr）. The optical principle of the occurrence of this black water was analyzed by the inherent optical properties and the ocean color components. The results show that black water is caused by the relative low values of the suspended particle matter concentration and the back scattering ratio. In the black water region, the percentage of the phytoplankton absorption was relatively high, and the large size of the phytoplankton caused the low value of the particle backscattering ratio.
