游离基

The absorption of root system was the main sources of nitrogen in the plant.The effects of matrix ventilation on the abaorption,transportion and metabolism of nitrogen in the root system of cucmber were discussed deeply.The results showed that contents of ammonium,nitrate,free amino acids and soluble protein in cucumber roots were higher in G1 treatment.Contents of ammonium,nitrate and free amino acids in cucumber roots were the trend of the dropping after the first rising in F1 treatment,but contents of soluble protein was lower11.03%than that of the control.

根系吸收是植物体内氮素的主要来源，本研究深入探讨了基质通气状况对黄瓜根系氮素吸收、运输和氮代谢的影响，结果表明G1通气处理根系的铵盐、硝酸盐、游离氨基酸和可溶性蛋白含量均较高；非通气处理(F1处理)根系内铵盐、硝酸盐和游离氨基酸含量呈先升高后降低的趋势，而可溶性蛋白含量始终较低，比对照降低11.03%。G1处理根系硝酸还原酶、亚硝酸还原酶、谷草转氨酶、谷丙转氨酶、谷氨酰胺合成酶活性均较高；而F1处理的酶活性在处理末期显著降低，其中谷氨酰胺合成酶活性比对照降低33.33%。

While copper is essential, it is also a potent cytotoxin when allowed to accumulate in excess of cellular needs.

铜离子参与的反应也产生高活性氧包括羟基游离基。

In theory, that electron could end up attached to anearby flavin molecule, creating an unstable arrangement called a radical pair.

理论上看，这个电子最终会附着到邻近的黄素分子上，从而排列成不稳定的游离基对。

However, the valuable reference data have been obtained by study of free group reaction in non-homogeneous phase system of the two kinds of materials, which have been mentioned above.

论文通过对非均相体系游离基反应的研究，得到了非常有价值的参考数据，有的理论和数据已经在生产技术开发中得到很好的应用和实践。

Any free radicals in Martian soil could be taken as presumptive evidence of life there.

火星土壤中的任何游离基将可用来推断火星存在生命。

This enzyme, in contrast to endogenous wheat flour lipoxygenase, releases peroxy radicals which cooxidize carotenoids and other flour constituents.

同内源性小麦面粉脂肪氧合酶相比较，Ⅱ型脂肪氧合酶可以释放出能辅助氧化类胡萝卜素和其它面粉组成的过氧游离基。

During root primordia initiation,large amount of starch depleted,the amount of protein,free amino acids and peroxidase activity increased.

在根原基形成时，淀粉大量消耗，蛋白质和游离氨基酸含量增加，过氧化物酶活性增强；而在根原基形成后根的生长过程中，淀粉含量回升，蛋白质、游离氨基醚含量和过氧化物酶活性下降。

Can mix undisturbedly slow the skin, restore the softness with its youth particular skin and vitality, cellulose of vitaminic E acetic acid conduces to antioxidant the loss that avoids free radical cell, and with other each component is mixed attainments cooperation, in order to retain cutaneous health and vigor.

可以镇静和舒缓皮肤，恢复其青春肌肤独有的柔软和活力，抗氧化剂维他命E醋酸纤维素有助于防止游离基细胞的损伤，并且与其它各成份和诣协作，以保持皮肤的健康和活力。

Sol–gel/diaminobenzoic acid hybrid materials were also generated to be used as the MALDI matrices for the analysis of oligonucleotides. It is because that DABAs have good molar absorptivity at wavelength of 337 nm. Furthermore, two amino functional groups attached to the aromatic ring in DABAs can also suppress the cation adductions of oligonucleotides and leave the protons to the oligonucleotides during MALDI-MS analysis. This matrix system can be used as an alternative for the analysis of oligonucleotides.

本论文也利用双胺基苯甲酸与溶胶凝胶混成产物当做MALDI基质来分析DNA分子，利用双胺基苯甲酸本身具有吸收雷射的特性，且其含胺之官能基可和钠、钾离子竞争DNA上磷酸根的负离子结合部位，因此可和DNA有较强的亲合力，而在脱附游离的过程中并可转移质子给磷酸根，可有效降低盐类的干扰，此一基质系统可取代传统MALDI基质混合胺盐的效果，适合用於DNA样品的分析。

Restrain free radicels, fight against ageing, reserve fiber cell moisture and effectively reduce wrinkle.

抑制游离基、预防衰老，锁定纤维细胞中的水份，有效减退皱纹。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。