A new study published in the journal Current Biology has been able to shed some light on this puzzle of sleep and aging. 发表在现代生物学杂志上的一项新研究,已经能够阐明睡眠与衰老之迷。
They have the characteristics of strong intensity, light material, airtight, anticorrosion, aging resistance, low cost, etc. 具有强度好、质轻、不透气、耐腐蚀、抗老化、价格低等特点。
Effects of Light Stabilizers and Antioxidants on the Photooxidative Aging of High-density Polyethylene 光稳定剂和抗氧剂对聚乙烯老化性能的影响
Used for color fastness-to-light, color fastness-to-whether, color fastness-to-light and sweat and light aging test of various colored textiles and other materials. 用于染色牢度试验中的耐光色牢度及耐气候色牢度试验,也可用于油漆、颜料、涂料、橡胶、塑料以及纸张等其它材料的耐光色牢试验和光老化试验。
The heat stability, thermal decomposition behavior and the effect of light aging on performance of HPVC were studied. 主要研究了高聚合度聚氯乙烯(HPVC)的热稳定性和热分解过程以及光老化对HPVC性能的影响。
Even if the sun will cause limited daily light aging, immune system changes and skin cancer. 哪怕有限的日常日晒也会造成光衰老,免疫系统的变化和皮肤癌。
The results show that the higher the degree of polymerization is, the better heat stability of HPVC resin is, and the better light aging resistance of HPVC is. 结果表明,聚合度越高,树脂的热稳定性越好,HPVC的耐光老化性能明显优于普通聚合度聚氯乙烯(PVC)。
Characters and main use: Soft and light, high water proof and breathability. Good low temperature resistance and anti aging. Suitable for leisure wear and sports wear. 特点及主要用途:柔软轻薄,高防水高透湿,耐低温抗粘连。适合做各种休闲运动装。
Study on light absorption and aging properties of HIPS/ nano-TiO_2 composite HIPS/nano-TiO2复合材料的吸光及光老化性能研究
The effects of some light stabilizers and antioxidants on PE film photooxidation aging are studied, and the cooperation and content of these matters are also discussed. 研究了不同光稳定剂和抗氧剂及其配合使用、光稳定剂含量对聚乙烯薄膜耐光氧老化性的影响。
Results showed that proper additives can improve the resistance to yellowing of polyurethane elastomers, and slow down the speed of light aging, meanwhile, they can affect other performance of elastomers also. 结果表明:添加适量的助剂可提高鞋用聚氨酯弹性体的抗黄变性能,并能有效延缓鞋用聚氨酯弹性体的光老化速度,而对弹性体的其他性能影响极小。
The existence of nano-TiO 2 nanoparticles in composites improves the toughness of HIPS. After accelerated light aging, the mechanical properties of composites, especially toughness, are higher than those of pure HIPS obviously. Nano-TiO 2 can improve the light aging ability of HIPS. 经氙灯加速光老化后,HIPS/纳米TiO2复合材料的力学性能明显优于纯HIPS样品,纳米TiO2可显著提高复合材料的抗光老化能力。
The dispersion of TiO 2 nanoparticles, mechanical properties, light aging properties and light aging mechanism of HIPS/ nano-TiO 2 composites were studied. 研究了纳米TiO2粒子在高抗冲聚苯乙烯(HIPS)/纳米TiO2复合材料中的分散及纳米TiO2对复合材料光老化性能的影响,探讨了复合材料的光老化机理。
Study of light aging on macromolecule compound of anthrone 蒽酮高分子复合物发光体的光老化研究
A sort of light ageing experiment method is introduced which uses flash lamp to exposure silks. Through light ageing experiment for six kinds of silk cloth, aging effect of flashlight for white silks and dyeing silks by vegetable dyes is studied. 介绍使用闪光灯进行丝绸光老化实验的方法,通过对6种丝绸样品的光老化实验,研究闪光灯光照对白色丝绸及植物染料染色的丝绸产生的老化作用。
The more the rice turned aging, the larger the transparency difference ( negative value) absolute value would be. That was, light transparency difference could basically reflect the quality and aging degree of rice. 且随着稻米的陈化程度加剧,其光透差(负值)绝对值变大,即光透过率差基本上能反映稻米的品质和稻米的陈化程度。
Research on Light Aging of Fruit Nursery Paper 育果套袋纸光老化性能的研究
Light-aging experiment on silk 丝绸表面光老化实验研究
The tests and studies on the light aging property of polyethylene jackets 聚乙烯夹克光老化性能的试验研究
Study on dispersion and light aging properties of hips/ nano-tio_2 HIPS/纳米TiO2的分散及光老化性能研究
Data from six building sealant samples after heat ageing tests and xenon-arc light ageing tests by way of aging velocity, aging coefficient, ratio comparison of STDEV and Average, and extrapolation of experiential equation were processed to study its durability. 采用老化速率法、老化系数法、标准偏差与平均值的比值比较法、经验方程外推法等方法对6种建筑密封胶样品经热老化、氙灯老化试验后的试验数据进行处理,以研究其耐久性。
Seen in this light, the aging of the population in Jinhua City increases. 由此看来,金华市人口老龄化加重。
The results also proved that since the hyper-branched polyester-based ferrocene can absorb and shield the ultraviolet light, it will play a important role in inhibiting oxidation of aging. 论文对其抗氧化机理进行了初步探讨,认为超支化聚酯基二茂铁能够吸收和屏蔽紫外光,从而起到抑制氧化的作用。
The first step of light aging tends to be the fade of dyes in the surface of silk cultural relics. And therefore effective actions must be taken to protect the dyes from fading. 丝绸文物的光老化首先体现为表面染料的褪色,因此亟需采取措施来避免其褪色的发生。
As an important measure in the research of yeast aging, the study of chronological lifespan sheds a light on the aging mechanism of both yeast and higher eukaryotes, and therefore has been calling a great deal of attention and enormous research efforts in elucidating its mechanisms. 时序寿命作为研究酵母衰老的一种重要手段,对研究酵母以及高等真核生物的衰老机理具有重要意义,是近年来衰老研究领域中的热门课题。
Conclusion CO2 laser lattice light had an effect on treating facial skin aging, with safety, few side effects and shorted recovery time. 结论CO2点阵激光能有效治疗面部皮肤光老化,且安全性高、不良反应少,恢复时间短。
In this research experiment, the yellow silk sample, brown silk sample and red silk sample discolor easily under light irradiation action; the light aging action of white silk sample is least. 本研究实验中的黄色、茶色和红色丝绸在光照下容易褪色,白色丝绸光老化作用最小。
Wavelength modulation-based fiber Bragg grating sensors, which not only has the general advantages of fiber-optic sensors, but also its measurement signal is not affected by the optical fiber bending loss, connection loss, the light source interference and detector aging and so on. 波长调制型的光纤光栅传感器,除具有传统光纤传感器的优点外,还具有测量信号不受光纤弯曲损耗、连接损耗、光源起伏和探测器老化等因素的影响。
The artificial aging could increase the reflectivity of the yellow ray and the red ray. The color of bronze powder turns from light yellow, yellow to red with higher aging temperature and longer aging time. 人工时效可以提高铜金粉对红光和黄光的反射率,随时效温度的升高和时效时间的增加,铜金粉的颜色呈现由浅黄到黄色,再到红色的变化规律。
Moreover, the carbonyl index, viscosity average molecular weight, crystallinity, tensile strength and elongation at break of the composites were also performed by light aging test in artificial accelerated aging test box. 在人工加速老化实验箱中进行光老化实验,采用羰基指数、粘均分子量、结晶度、拉伸强度和断裂伸长率等对复合材料在光照过程中结构和性能的变化进行了一系列的研究。