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浅色化
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  light-colored
     Study on Light-colored Technology of Polymerized Rosin Glyceride
     聚合松香甘油酯浅色化技术的研究
短句来源
  “浅色化”译为未确定词的双语例句
     Decolorization of Residual Lignin of Na_2SO_3 Treatment through H_2O_2 Bleaching
     木素H_2O_2漂白的浅色化效果
短句来源
     Study on Decolorization of Rosin Using Decoloring Agent PS-10
     浅色剂PS-10用于松香浅色化的研究
短句来源
     STUDY ON MECHANISM OF DECOLORIZATION OF ROSIN BY PS-10
     PS-10对松香的浅色化作用机理初探
短句来源
     The colour and pH value of tannin extract are decreased by treating with 3%-4% decolouring agent XK in 40% ethanol (weight of tannin extract ,respectively) at 85~90℃.
     用占栲胶重量的3%~4%XK(浅色化试剂)和40%乙醇在85~90℃条件下同栲胶分子结构中A或B环上酚羟基反应,以浅化栲胶颜色及降低栲胶pH值。
短句来源
     Residual lignin resulted from Na2SO3 treatment was bleached with H2O2. Decolorization of the residual lignin (UBTL) was studied quantitively.
     对经Na2SO3处理的不溶木素(UTL)进行H2O2漂白,定量研究漂后不溶木素(UBTL)中色团含量及其浅色化行为发现:H2O2漂白一定程度地破坏了由Na2SO3处理引入的发色基团,但漂后色团含量仍高于未经Na2SO3处理的磨木木素;
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  相似匹配句对
     Study of Light Color Phenolic Formaldehyde Resin
     酚醛树脂的浅色研究
短句来源
     Study on Synthesis of Light Colored Rosin Modified Phenolic Resin
     松香改性酚醛树脂的浅色研究
短句来源
     Frenzied Survival
     狂欢生存
短句来源
     It also inquires into principles to correct them.
     感 原则;
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     Study on light colour assistant reagent of rubber
     浅色橡胶助剂的研究
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  light-colored
By contrast, the Broad-Complex (Br-C) locus, which normally produce a dark puff in the 2B region of the X chromosome, forms a typical light-colored puff when transferred to the 99B region of chromosome 3R using P[hs-BRC-z1].
      
In control material, iron cores of ferritin and phytosiderin were more light-colored and 2-3 times smaller in size than in the experimental treatment.
      
The concentrations of 137Cs in the dark-colored particles were up to 400 times higher than those in the light-colored particles.
      
The reasons for the formation of light-colored acid eluvial horizons in the soil profile
      
Concepts concerning the origin of light-colored acid eluvial horizons within the soil profiles are considered.
      
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The colour and pH value of tannin extract are decreased by treating with 3%-4% decolouring agent XK in 40% ethanol (weight of tannin extract ,respectively) at 85~90℃. The colour is lightened about 30%~50%,pH decreased to normal standard and the grade of tannin extract can be raised for one order. The acting mechanism of XK was proposed to be reaction between XK and phenolic hydroxy groups of A, B ring in the tannin molecule. This method has been utilized in Nanjing Chemistry Plant of Forest Products , Fujian...

The colour and pH value of tannin extract are decreased by treating with 3%-4% decolouring agent XK in 40% ethanol (weight of tannin extract ,respectively) at 85~90℃. The colour is lightened about 30%~50%,pH decreased to normal standard and the grade of tannin extract can be raised for one order. The acting mechanism of XK was proposed to be reaction between XK and phenolic hydroxy groups of A, B ring in the tannin molecule. This method has been utilized in Nanjing Chemistry Plant of Forest Products , Fujian to produce pale colour tannin extract and lighten the deep colour tannin extract.

用占栲胶重量的3%~4%XK(浅色化试剂)和40%乙醇在85~90℃条件下同栲胶分子结构中A或B环上酚羟基反应,以浅化栲胶颜色及降低栲胶pH值。浅化率达30%~50%,pH值降低幅度为20%~30%,提高了产品的等级,具有经济效益。南靖林化厂已采用本技术方法工业化生产浅色栲胶及深色栲胶的回釜复制。

Residual lignin resulted from Na2SO3 treatment was bleached with H2O2. Decolorization of the residual lignin (UBTL) was studied quantitively. H2O2 bleaching destroyed some of the chromophores, but catechol content still remained intact. Decolorization of the lignin was mainly attibuted to the removal of Oquinone. If adequate amounts of metal ions are present in the system,chelating of catechols with the metalions may turn out to be the major cause of poor decololrization. O-quinone exerts strong chromophoric...

Residual lignin resulted from Na2SO3 treatment was bleached with H2O2. Decolorization of the residual lignin (UBTL) was studied quantitively. H2O2 bleaching destroyed some of the chromophores, but catechol content still remained intact. Decolorization of the lignin was mainly attibuted to the removal of Oquinone. If adequate amounts of metal ions are present in the system,chelating of catechols with the metalions may turn out to be the major cause of poor decololrization. O-quinone exerts strong chromophoric effect, any residual O-quinone in lignin could be another key factor for poor decolorization. Conjugated carbonyls play minor roles as far as the original lignin colour and the decolorization of the lignin are concerned.

对经Na2SO3处理的不溶木素(UTL)进行H2O2漂白,定量研究漂后不溶木素(UBTL)中色团含量及其浅色化行为发现:H2O2漂白一定程度地破坏了由Na2SO3处理引入的发色基团,但漂后色团含量仍高于未经Na2SO3处理的磨木木素;H2O2漂白木素的浅色化效果主要来源于邻醌结构的破坏,但残余邻醌仍为漂后木素颜色的主要来源;漂白前后邻酚含量基本保持不变,其铁螯合物存在于木素中,严重地降低了H2O2漂白对木素的浅色化效果;共轭羰基既不构成木素颜色的主要来源,对木素浅色化的贡献也不大。

The quantitative study on coloring effect of chromophores of the undissolvedlignins by Na2SO3-treatment and H2O2-bleaching was completed by analysing theirabsorption at 457nm. It was showed that o-quinone and catechol-metal ion chelatedetermined the coloring effect of the undissolved lignins. 39% and 40% of deep coloringeffect of the undissolved Na2SO3-treated lignin (UTL) came from o-quinone and catechol-Fe3+ chelate, respectively, and they made 49% and 33% of contribution to the UTL color.Although decolorization...

The quantitative study on coloring effect of chromophores of the undissolvedlignins by Na2SO3-treatment and H2O2-bleaching was completed by analysing theirabsorption at 457nm. It was showed that o-quinone and catechol-metal ion chelatedetermined the coloring effect of the undissolved lignins. 39% and 40% of deep coloringeffect of the undissolved Na2SO3-treated lignin (UTL) came from o-quinone and catechol-Fe3+ chelate, respectively, and they made 49% and 33% of contribution to the UTL color.Although decolorization of H2O2-bleaching to lignin was attributed to decrease of the coloringeffect of o-quinone, it still made 37% of contribution to the coloring effect of undissolvedH2O2-bleached lignin. Conjugated carbonyls had little influence on the deep coloring effectand decolorization of lignin. Na2SO3-treatment made the chromophoric behavior of ligninmore complicated. Some change in lignin structure system at which chromophores werepresent took place during Na2SO3-treatment and H2O2-bleaching.

本文定量研究了木质素色团在Na2SO3处理及H2O2漂白中的颜色效果。研究发现,邻醌和邻酚金属资合物既是Na2SO3处理水质素深色化效果的主要来源,又是影响H2O2漂白木质素浅色化效果的决定因素;共轭羰基对木质素颜色不构成主要影响;Na2SO3处理对木质素引入了相当量的未知颜色源,使木质素发色行为变得更为复杂。

 
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