查询词典 furaldehyde

This might be due to the dehydration reactions causing sugars to become unsaturated and highly reactive; the hexose reducing sugars are partially converted to 2-furaldehyde and 5-hydroxymethyl-2-furaldehyde[14], which might remain undetected in a reducing sugar test.

这可能是由于脱水反应导致糖成为饱和，高活性；己糖还原糖被部分转化为呋喃、5-hydroxymethyl-2-furaldehyde[14]，它可能仍然在一个还原糖含量测试。

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。

Objective:To develop a Triton X-100 solubilization spectrophotometric method for the determination of furaldehyde in the air of workplace.

目的：研究曲拉通100增溶苯胺分光光度法测定作业场所空气中糠醛的方法。

The bio-oil was composed of acetic acid, hydroxyacetaldehy, acetol, levoglucosan, furaldehyde, and a small quantity of phenols.

结果表明，热解温度为460~520℃时热解油产率最大，主要有醋酸、羟基乙醛、羟基丙酮、左旋葡聚糖、糠醛，油热值为17.0MJ.kg-1；热解气主要为CO2和CO，还含有少量H2、CH4和C2~C4的烯烃。

Synthesized three new dithiocarbohydrazones: 1, 5-bis (4-methoxybenzaldehyde) dithiocarbohydrazone (1), 1, 5-bis (p-dimethyl aminobenzaldehyde) dithiocarbohydrazone (2), 1, 5-bis (2-furaldehyde) dithiocarbohydrazone (3), and initially reported the 〓C NMR data of the dithiocarbohydrazones.

合成了3—（谷氨酮—1—基）—4—氨基—5—巯基—1，2，4—均三唑新的中间体化合物，以元素分析，IR，NMR，MS实验技术对其结构进行了表征，研究其NMR波谱特征，并以〓H-〓H COSY，〓C-〓H COSY，COLOC二维NMR技术对其〓H，〓C NMR的谱峰进行了全归属。

In this paper, a novel surfactant-free microemulsion is reported, which is composed of furaldehyde, water and ethanol without a traditional surfactant of the amphiphilic molecular structure.

本文报道了一种不含表面活性剂的微乳液体系，由呋喃甲醛，水和乙醇三组分构成，不含传统的表面活性剂。

Amount of 2 furaldehyde were increased with the increase of acetic acid aqueous solution concentration from 0 to 3%,and almost constant from 3% to 30%.

当醋酸浓度从0至3%时，糠醛的收量随着增加，但是当醋酸浓度从3%增至30%时，其收量却几乎不变。

Two novel SFME systems are found fo the first time consisting of furaldehyde/DMF/water and furaldehyde/ethanol/water.

发现了两个SFME体系：呋喃甲醛/DMF/水和呋喃甲醛/乙醇/水体系。

The volume ratio of furaldehyde to acetic anhydride is 1∶2; the mole ratio of furaldehyde with anhydrous potassium carbonate is 1.00∶0.54. The best phase transfer catalyst is PEG1000, the mass ratio of PEG1000 with furaldehyde is 4.3%, the reaction time is 11 min, the reaction power of microwave is 260 W. The yield ofα-furanacrylicacid is up to 72.3% under these reaction conditions.

研究结果表明：在微波辐射功率为260 W、微波反应时间为11 min、以聚乙二醇1 000(PEG1000)为相转移催化剂，糠醛与乙酐的体积比为1∶2，糠醛与无水碳酸钾的量比为1.00∶0.55时，α-呋喃丙烯酸的产率为72.3%。

The Ni-Fe and Mg-Al-Fe-LDH show paramagnetism at normal temperature, the calcined samples of LDHs show super-paramagnetism. The magnetization increases with the higher Fe~(3+) content and is independent of the crystal structure of LDHs. Magnetization of the calcinates of Ni-Fe-LDHs is higher than the Mg-Al-Fe-LDHs.3. Two novel SFME systems were found for the first time, that is furaldehyde/DMF/water and furaldehyde/ethanol/water system.

结果表明，Ni-Fe和Mg-Al-Fe型LDHs本身及其煅烧产物在常温下均呈现顺磁性，其煅烧产物均呈现超顺磁性；同类LDH中其煅烧产物的磁性大小与Fe~(3+)含量成正比而与LDH的晶体结构无关，Ni-Fe LDHs及其煅烧产物的磁性强于Mg-Al-Fe LDHs及其煅烧产物，。3。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了