自然老化

皮肤老化包括自然老化与光老化，老化由很多机制共同作用引起。

Skin aging includes intrinsic aging and photoaging .

自然老化会导致复合材料电阻响应程度的下降，但恢复性能显著提高，负蒸气系数效应（NVC）强度减弱。

In addition , natural aging improves the recoverability and decreases the NVC effect of the composites .

聚甲醛自然老化的SEM研究

SEM Study on Natural Weathering of POM

双酚A型聚碳酸酯自然老化的XPS研究

XPS Study on the Natural Weathering of Bisphenol A Polycarbonate

通过测试复合材料自然老化实验前后力学性能的变化，研究了稀土氧化物对聚丙烯（PP）老化性能的影响。

Effects of rare earth oxides on weathering-resistance of PP were studied via the changes in mechanical properties .

MPG母排绝缘热收缩管抗自然老化初探

The anti_natural ageing study of MPG bus bar insulation heat shrinkable tubes

自然老化对SY-1硅橡胶色彩稳定性的影响

Effects of ozone aging on the color stability of SY-1 silicone elastomers

经La（NO3）3处理对自然老化水稻种子活力的提高较人工老化水稻种子明显。

The vigor increase of natural aged seed of rice is greater than that of artificial aged seed with La ( NO 3 ) 3 treatments .

结果表明，PS在海南的自然老化以断链反应为主，分子量的下降与太阳辐照强度密切相关；

The results showed that the nature aging was mainly in the form of chain rupturing reaction , and the degradation of molecular weight was nearly relative with solar radiation intension .

测量了经18年自然老化后的TGS单晶的微分电滞回线，发现回线的形状与未老化的样品类似，故称其为隐性老化。

Differential hysteresis loop of TGS single crystal has been measured . The TGS sample has been stored over 18 years and can be seemed as completely aged .

还发现对于此复合材料存在两个累积辐射剂量的数值界限R1和R2。当累积辐射剂量小于或接近R1时，复合材料的ρ、ε、P和τ的变化趋势与自然老化规律基本相同；

And found two data limit of accumulative radiation dose : R1 and R2 . When accumulative radiation dose is smaller or near R1 , the attenuation rate of ρ, ε, P is the same as it of natural ageing .

本文采用人工老化和自然老化对混合办公废纸脱墨浆H2O2（P）与H2O2-Na2S2O4（PY）漂后返黄进行了研究。

The yellowing of deinked pulps from mixed office wastepaper ( MOW ) bleached with H 2O 2 ( P ) and H 2O 2_Na 2S 2O 4 ( PY ) respectively is studied with natural aging and oven aging in this paper .

将5-羟甲基糠醛（5-HMF）与其他啤酒老化评价方法相比较，考察自然老化啤酒以及外加5-羟甲基糠醛标样啤酒的老化情况，对以5-羟甲基糠醛作为啤酒老化评价指标进行研究。

5-Hydroxymethyl furfural ( 5-HMF ) was compared with other evaluation methods of beer ageing . Research of flavor ageing was done in natural staling beer and 5-HMF added beer .

在此评价方法中建立了单一快速试验环境和复合快速试验环境下FRP名义力学性能衰减模型，在分析快速和自然老化试验结果对应关系时提出并计算了单一和复合加速因子。

The models of nominal mechanical performance of FRP under single and compound accelerated experiments were established for the evaluation method . The single and compound accelerated factors were proposed and calculated when analyzed the relationship between the results of the accelerated and outdoor exposure experiments .

结果表明：0.5%PVA+1.0%KNO3引发自然老化种子1d，1.0%PVA+1.0%KNO3引发人工老化种子1d，显著提高了种子室内发芽率和田间成苗率。

The results showed that , germination percentage in lab and seedling rate in field increased significantly after one day 's solicitation with 0.5 % PVA + 1.0 % KNO3 on naturally aging seeds and 1.0 % PVA + 1.0 % KNO3 on artificially aging seeds .

用不同浓度的PEG、PVA、KNO3、PEG+KNO3、PVA+KNO3对杂交籼稻自然老化和人工老化种子进行引发效果研究，筛选出最佳处理方法，再对经最佳处理引发的种子进行田间成苗试验研究。

The solicitation effects of PEG , PVA , KNO3 , PEG + KNO3 , PVA + KNO3 solutions with different concentrations on naturally aging and artificially aging indica rice seeds were studied . The seedling experiment in field was conducted by using the best treatment screened .

避光保存条件下，SY－l硅橡胶亦出现色彩变化，其变化程度小于自然老化，油画类颜料与无机盐类颜料色彩稳定性优于水粉色系。

Under the time pass condition , all the SY-1 silicone elastomers also underwent color changes but to a lesser degree than the changes under the outdoor weathering condition , and the elastomers stained with oil pigment and inorganic salts possessed better color stabilities than that stained with gouache color .

自然老化对导电硅橡胶线性特性的影响

Influence of natural aging on linear characteristic of conductive silicone rubber

基于长期自然老化的沥青结合料低温抗裂性指标

Anti-cracking indices of asphalt with different aging degree at low temperature

印刷胶片的自然老化与人工老化的关系

Relationship between Natural Ageing and Artificial Ageing of Graphic Arts Films

聚合物基复合材料自然老化寿命预测方法

The estimating method of atmospheric aging age on polymer matrix composites

自然老化硅橡胶材料表面憎水性及耐受特性的研究

Study on Hydrophobicity and Withstand Characteristics of Natural Aging Silicone Rubber

杂交水稻自然老化种子与人工老化种子性能差异研究

Differences in Properties between Naturally and Artificially Aged Hybrid Rice Seeds

种子自然老化时蛋白质类型的变化

The changes in protein type during natural ageing of seeds

复合材料自然老化与使用老化之间的关系

Relation between nature aging and in-service aging for Composites

采用自然老化方式进行实验。

Natural aging model was used in the experiment .

即使储存和使用得当，软管也会自然老化。

Hoses are subject to natural aging even when stored and used properly .

选择与人类更年期综合征病理变化更为近似的自然老化术制备模型。

Naturally aging models similar to human pathological change of climacteric syndrome were chosen .

硫化胶的长期室内自然老化

Long period indoor natural aging of rubber vulcanizates

方法：采用自然老化法建立围绝经期大鼠动物模型。

Methods : The animal model of perimenopause rats was established by unforced aging .