查询词典 free radical

Symmetry both axial and radical pre-loaded to provide free performance in high speed motion.

对称的轴向和径向预紧保证了在高速连续的运转下的无噪音。

The results showed that the preoxidation of PPESK was a free radicals reaction,which was initiated by the decomposition of proton in aromatic ring and sulfone functional group and the removal of H_2O and SO_2.When the preoxidation temperature was above 460℃,the radical reaction was initiated by the decomposition of ketone functional group and the removal of CO_2.At last,the three-demensional cross-linking structure containing polyaromatic ether and biphenyl was formed.

研究表明，PPESK的预氧化过程是一个自由基反应过程，始终伴随着芳香环质子和砜基官能团的脱除引发的自由基交联反应，脱出H_2O与SO_2；当预氧化温度超过460℃后，随着反应的进行，由羰基官能团分解引发的自由基交联反应开始发生，脱出CO_2，并最终形成了含有大量聚芳醚和联苯结构的稳定的三维空间网状结构，进而完成PPESK由热塑性材料向热固性材料的转化。

This article reports a case of a 61-year-old patient with Soc of tongue who had undergone a left free radial forearm flap reconstruction operation after a partial glossectomy and left modified radical neck dissection. Postoperatively 1 month, the flap had changed color and texture under naked-eye inspection, and resembled the oral mucosa.

虽然此皮瓣已被广泛应用，但对愈合之过程仍有争议及未解之处，过去的研究发现利用游离桡前臂皮瓣重建舌体后，临床追踪发现游离皮办在口内的环境下，其皮瓣的色泽与质感均有改变，且从肉眼上观察具有红化的现象，与正常口腔黏膜相似。

There six chapters in this dissertation: the overview on the study of probing for reactive oxygen species, spin-labelled fluorophore as probe for free radicals, Fe -EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability, study of fluorimetric method for the determination of peroxynitrite, study of spiro-formed rhodamine B hydrazide as a novel fluorescent probe in analytical chemistry, the conclusion and prospect of the present research work.

本论文分六章，包括生物活性氧表征的研究进展、自旋标记荧光探针表征自由基的研究、利用Fe-EDTA引发对苯二甲酸芳环羟基化反应评价抗氧化剂清除羟基自由基能力的研究、荧光法表征过氧亚硝酸根的研究、螺环型罗丹明B酰肼化合物作为新型荧光探针的性质及应用的研究、结论与展望。

The results show that all the fucoidan fractions had scavenging effects on superoxide, hydroxyl radical and hypochlorous acid, except that the high sulfated fractions F-B1 and F-B2 with low molecular weight had little scavenging activities on the three oxygen free radicals.

因低硫组分F一AZ(分子量8.7KD)在体外具有很好的抗氧化活性，因此选用四氯化碳(ee一4)和脂多糖+D一氨基半乳糖造成的急性肝损伤小鼠为模型，研究了F一AZ组分在这两种肝损伤小鼠体内的抗氧化活性和肝损伤的保护之间的关系。

The best way to assure that free speech is not despoiled by hate mongering would be for the campaigns to make a routine, unsensational point of denouncing the ads and their creators for what they are — the product of a radical fringe that has little regard for rational debate.

确保言论自由最好的方法，就是别让具有仇恨意味的宣传品成为竞选活动中的常态，也就是广告中不具有煽动性的攻击观点，让激进的偏激言论者也能对於理性辩论有些许的尊重。

"Radical free thought" is the motto of this school of Monism; at the same time, it disclaims all sympathy with destructive Atheism, Agnosticism, Materialism, and Negativism in general.

"激进自由思考"的座右铭是这个学校的一元；在同一时间，它放弃一切破坏性的同情与无神论，不可知论，唯物主义，并否定一般。

The free hydroxyl radical of greater activity produced in the catalytic ozonization of V is the essence of the catalytic system; and the formed V also contributed greatly to the removal of chemical oxygen demand.

结果表明，催化体系的本质是催化剂中的四价钒催化臭氧分解生成了活性更高的羟基自由基，所生成的五价钒对体系化学耗氧量的去除也有很大的贡献（近10%）。

Abstract］ Objective To sum up the experiences of tongue repair after radical operation of tongue carcinoma with free forearm flap in the last five years.Methods The clinical data of 12 patients underwent forearm free flap grafting for tongue repair from 2000 to 2006 were retrospectively analysed.

目的 探讨臂桡侧游离皮瓣在舌癌切除术后舌再造中的应用方法对南昌学第附属医院2000年以来12例应用前臂桡侧游离皮瓣修复舌癌切除术后舌组织缺损的病例进行临床分析，总结有关处理经验和教训。

A process for making an electronic device which comprises applying a nonaqueous plate-resistant ink by ink jet printing to selected areas of a dielectric substrate, optionally laminated with an electrically conductive metal, exposing the plate resistant ink to actinic and/or particle beam radiation to effect polymerisation, adding one or more metal layers by electrolytic or electroless deposition, the upper layer of which is an etchresistant metal, removing the polymerised plate-resistant ink with alkali and finally removing the electrically conductive metal which are optionally directly laminated to the dielectric substrate and not protected by an upper layer of etch-resistant metal by chemical etching wherein the plate-resistant ink is substantially solvent-free and comprises: A 30 to 90 parts acrylate functional monomers free from acid groups comprising mono- or higher functionality wherein 5 to 95% by weight are mono-functional monomers; B 1 to 30 parts acrylate functional monomer containing one or more acid groups; C 0 to 20 parts polymer or prepolymer; D 0 to 20 parts radical initiator; E 0 to 5 parts colorant; F 0 to 5 parts surfactant; and where the ink has a viscosity of not greater than 30 cPs at 40 DEG C and all parts are by weight.

一种制备电子装置的方法，所述方法包括以下步骤：通过喷墨印刷在任选层压了一种或多种导电金属的介电底材的选定区域涂覆非水的阻沉积油墨，将所述阻沉积油墨暴露在光化辐射和/或微粒束辐射中以完成聚合，通过电解沉积或无电沉积增加一层或多层金属层，其中最上层的金属层为一种或多种阻蚀刻金属，用碱除去聚合的阻沉积油墨，最后通过化学蚀刻将任选直接层压在所述介电底材上并且不被一种或多种阻蚀刻金属的上层保护的导电金属除去，其中所述阻沉积油墨基本不含溶剂，并且包含以下组分：A30-90份不含酸基团的丙烯酸酯功能性单体，所述单体包括单官能或多官能单体，其中5-95％重量为单官能单体；B1-30份包含一个或多个酸基团的丙烯酸酯功能性单体；C0-20份聚合物或预聚物；D0-20份自由基引发剂；E0-5份着色剂；和F0-5份表面活性剂；其中所述油墨的粘度在40℃下不高于30cPs，并且所有的份数以重量计。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。