糠醛

The decoloration ratio of cornhusk hydrolysate was 92.27%. 75% of furfurol, 53% of 5-hydroxymethyl furfural and 98% of polyphenol compounds were removed, and the loss of total sugar was below 5%.

在此工艺条件下，水解液的脱色率为92.27%，糠醛脱除率75%，5-羟甲基糠醛脱除率53%，多酚类化合物脱除率98%，总糖损失低于5%。

Results show that: the concentration of furfural levels off after a certain period of heating to reach equilibrium.

结果表明，达到平衡时，不同温度下糠醛在油纸中有不同的分配比例；温度升高，糠醛在油中含量减少，有从油中向绝缘纸中转移的趋势。

These have limited the development of furfural production. In this paper, one-stage process was reviewed briefly. Two-step process and current development of furfural production were discussed.

本文在对一步法的生产工艺进行概要介绍的基础上，重点对两步法糠醛生产工艺以及糠醛生产工艺的最新进展进行了讨论。

Therefore, this thesis focuses on the detailed introduction of furfural industry and itsinfluence on the environment at first, and also the probability and feasibility of developmentconcerning the furfural industry in Jilin province is analyzed.

为此，本文首先对糠醛产业及其对环境的影响做出了较为详细的介绍，并结合吉林省具有黄金玉米带的优势，分析了糠醛产业在吉林省发展的可能性和可行性。

Gradual regression analysis through specific mathematical algorithms to achieve automatic data selection and remove useless or even wrong data; The test data analysis revealed: the furfuran content have a very good correlation with polymerization degree of insulation paper, and a correlation model between furfuran content and DP was founded by regression analysis.

逐步回归分析通过偏回归平方和及显著性分析，实现对试验数据的自动分析、筛选，排除无用甚至是错误的数据；本文试验数据逐步分析结果表明：油中糠醛含量对数值与绝缘聚合度相关性最好，与现场实际分析结果一致；通过回归分析建立了绝缘聚合度与糠醛含量对数值的关系模型。

Factor analysis is a very popular multivariate statistical analysis method. It can summarize some unobservable factors from the test results which can summarize most of the observed data. The factor analysis suggest the DP, furfuran and CO_X can be divided into insulation aging factor, while the hydrocarbon gas and hydrogen were divided into another group which can be called insulation fault factor. The result of the factor analysis

因子分析作为一种常用的多元统计分析方法，可从众多可观测变量中，概括和推论出少数不可观测的潜变量，用最少的因子去概括和解释大量的观测事实；本文将试验过程中90℃下油中溶解气体、绝缘聚合度、糠醛等参量进行因子分析，结果表明：绝缘聚合度、糠醛、CO_x被分为一类，代表绝缘老化因子：烃类、氢气、被分为一类，代表绝缘故障因子；因子分析结果与现场经验一致，相互印证，具有重要意义。

The paper studied on the relationships between H–factor and dissolving rates of main saccharides, ratio of total saccharides and pentose to total solid, and concentration of furfural and hydroxymethylfurfural in hot-water pre-extracted liquor of bamboo under different conditions.

本文研究了不同工艺条件下竹子热水预抽提过程中主要的糖类组分溶出率、总糖和戊糖占抽提液中固形物的比例及糠醛、羟甲基糠醛的生成随H因子的变化规律。

Amounts of 2 furaldehyde and 5 hydroxymethyl 2 furaldehyde in wood vinegar from the treated wood were increased,but amounts of carboxylic acids,phenols,pyrocatechol,guaiacols,and maltol were almost constant.

与未处理材相比，处理材木醋液中糠醛及5 羟甲基糠醛的收量增加，而羧酸类、苯酚类、邻苯二酚、愈创木酚类及麦芽酚的收量几乎不变。

Furfural laws to furfural as raw material, derived by oxidation of sodium chlorate.

糠醛法 以糠醛为原料，经氯酸钠氧化而得。

Calibration models were established by the spectral measurement of a set of hydrolyzed standard sugar solutions by treating with concentrated sulfuric acid and a chemometrical software.

其原理是基于样品中的糖经浓硫酸处理后生成有紫外吸收的糠醛和羟甲基糠醛，进行紫外波长吸收测定；通过化学计量学软件，根据一组已知糖浓度标准样品的多波长光谱和所对应组成浓度之间的数学关系，建立校正模型。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。