苎麻

For the DPPH free radical scavenging, their EC50 values are 19.05 mg/ml and 15.61 mg/ml respectively, but their anti-oxidant capacities are 40 to 60 % higher than fresh ones. Hot water extracts of Boehmeria nivea root experienced sun dry treatment have a better ability to scavenging ABTS free radical (EC50=34.16 μg/ml)when compared to that of fresh root, which only have one tenth anti-oxidant ability left.

经冷冻乾燥和日晒乾燥的苎麻叶热水萃取物其抗氧化成分较新鲜者低约55至67 %，而对DPPH自由基清除能力其EC50分别为19.05 mg/ml和15.61 mg/ml，相对其抗氧化能力却较新鲜者为高约40至60%；经日晒乾燥苎麻根热水萃取物其清除ABTS自由基能力(EC50=34.16 μg/ml)明显较新鲜者为高，显示其清除自由基能力只剩1/10。

The first part of this research was to investigate anti-oxidant abilities of Boehmeria nivea leaf and root. Different extraction methods, drying conditions as well as far infrared were applied to measure their effects on anti-oxidant abilities of Boehmeria nivea leaf and root. Results showed that 95% ethanol extracts of fresh leaves and roots demonstrate the highest anti-oxidant components(total contents of phenol compounds and flavonoids)and scavenging abilities free radical scavengingABTS(2,2'-azinobis［3-ethylbenzothiazoline-6- sulfonic acid］and DPPH (α,α-diphenyl-β-picrylhydrazyl) free radical , followed by hot water and cold water extraction.

本研究第一部份拟针对苎麻叶与根探讨其抗氧化能力，并以不同萃取方法、不同乾燥处理方式及经远红外线照射对其抗氧化能力之影响，研究结果显示，在不同萃取方法中，新鲜苎麻叶与根皆以95%乙醇萃取物的抗氧化成分及抗氧化能力清除ABTS(2，2'-azinobis［3-ethylben-zothiazo-line-6

The repeatability and reproducibility of microwave testing chemical composition of ramie were studied. Five microwave ovens were applied in this experiment to test ceride, hydrotrope, pectin and hemicellulose in raw ramie samples .

摘要研究了苎麻化学成分微波检测法的重复性和再现性，试验采用苎麻原麻样品在5台不同的微波炉上提取测定脂蜡、水溶物、果胶及半纤维素。

The repeatability and reproducibility of microwave testing chemical composition of ramie were studied. Five microwave ovens were applied in this experiment to test ceride, hydrotrope, pectin and hemicellulose in raw ramie samples .

研究了苎麻化学成分微波检测法的重复性和再现性，实验采用苎麻原麻样品在5台不同的微波炉上提取测定脂蜡、水溶物、果胶及半纤维素。

The results indicated that the cross sections of fibers were porous and the surface had many cross markings, endwise lines. The FT-IR of the three fibers were basically similar. Ramie fiber accorded to the character of cellulose I, and with the highest crystallinity.

实验结果表明，这三种纤维的截面内均有孔隙，同时表面具有横节竖纹；它们的红外光谱图基本相似；苎麻纤维符合纤维素I的特征，且结晶度最高；黄麻的耐热性能最好，其次是苎麻。

About the studis on sexual determination of ramie, the gynandrous primordium was formed firstlyduring sex differentiation in male flower.

关于苎麻性别决定的研究，前人观察表明苎麻雄花序分化过程中先形成雌雄蕊原始体，然后雌蕊退化形成雄花。

New planted ramie often have defects of fewer efficient plant numbers, many of high-branches, difficult to peel bast, low yield, bad fiber quality and so on. Aiming at all these shortages, the cuttage breeding technology of fine varieties and high-yield and good-quality cultivating method, breeding Cutting seedling with several low-branches, planting deeply appropriately, ridging to foster rootstocks when intertilling, was brought forward.

针对苎麻新麻有效株少、高位分枝多、韧皮剥制难、原麻产量低、纤维品质差等问题，提出了培育携带多个低位分枝的扦插苗，麻苗移栽时适当深植，辅以新麻中耕时起垄培蔸的苎麻良种扦插繁殖新技术与新麻高产优质栽培方法。

Fiber harvest rates for ramie, flax and sabaigrass are the industrial scale results while those for kenaf bark and wheat straw are imitating trial results. 2 Harvest rates of CKs are the standard value of respective industry Even if the tested harvest rate is less than the standard value under the

48.0 1 苎麻、亚麻原茎、龙须草的制成率为课题组收集工厂化生产试验结果，红麻韧皮和麦草制成率为模拟试验结果；2对照制成率取行业通用数值（同等条件下比较试验结果低于通用数值，如苎麻化学脱胶制成率仅为62.5

As to the characteristics of high concentration, high alkalinity, complicated constituents and organics, the traditional technological design is difficult to be degraded in ramee retting wastewater.

苎麻化学脱胶废水具有浓度高、色度高、碱度高和水温高等特点，其成分复杂，并含有大量难降解的有机物。传统的工艺设计不能满足苎麻化学脱胶废水处理的要求。

This article had carried on the transformation to the ramee retting wastewater processing project which mainly used the method of "the transformation-biological chemistry" for the polymerization iron sulfate or the polymerization aluminum chloride.

对苎麻脱胶废水处理工程进行了改造，采用了&物化－生物化&组合工艺和企业锅炉烟气对苎麻脱胶废水进行中和处理，以废治废；采用硫酸亚铁、聚合硫酸铁或聚合氯化铝为絮凝脱色剂，去除大量的非溶解性污染物。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。