查询词典 aging

Presently research and evaluation method on it are very limited. Through bending creep test at 0C and bending test at -10C, this thesis studies the crack resistance at different aging condition. Research shows that the aging procedure will greatly reduce the asphalt mixtures crack resistance.

目前对此的研究和评价方法还较少，本文对短期老化和长期老化后的沥青混合料进行了O℃弯曲蠕变试验和-10℃弯曲试验研究，分析了不同老化状态下沥青混合料的低温抗裂性能。

The 3 order Yeoh constitutive model is used to describe the mechanical behavior of carbon-filled rubbers, the aging deterioration rule of carbon-filled rubber is discussed by thermal aging test, and an incomplete quadratic polynomial model is established by Response Surface method, which can describe the variation of performance with aging time and temperature of aged rubber.

用响应函数法建立了橡胶性能随老化时间、温度变化的二次不完全多项式模型，定量描述了材料热老化性能的变质规律。

So far, the synthesis of facial aging image usually based on a single mode, with no consideration of different aging trajactories for various persons. Although foreign researchers had built aging database with considerable bulk, the facial images are mainly Caucasians, which are not appliable to our yellow race. In the meanwhile, methods based on 3D face models are too complicate and expensive to generalize to real-life applications.

以往对人脸图像的衰老合成通常只是基于单一人脸的信息；或者按单一模式来处理所有人的衰老，并没有考虑不同种类人有着不同的个性化变老途径；虽然国外的学者建立了较大容量的人脸衰老数据库，但它只适合于西方人，并不适用于亚洲人种，且对从青年至老年阶段的衰老究尚不够深入；而基于三维模型的衰老模拟技术目前还存在数据获取及操作不便的缺点，限制了其应用推广。

objective to compare the anti-aging effects of lycium barbarum polysaccharides and tanshinone on the skin of d-galactose-induced mice aging model.methods 60 female mice were randomly divided into 4 groups (n=15):mice in normal control group received subcutaneous injection of normal saline and mice in the other 3 groups received cervicodorsal injection of d-galactose［1000 mg/(kg1·d)］ for 42 d to establish subacute aging model.the experimental groups included agingmodel group,lycium barbarum polysaccharides ［200 mg／group,tanshinone ［1 500 mg／］ group.forty two days later,the dorsal skin samples were collected to determine sod activities、mda and hydroxyproline contents.

目的 比较枸杞多糖与丹参酮对衰老小鼠皮肤的抗衰老作用。方法 60只雌性昆明种小鼠，随机分为4组(n=15)：正常对照组皮下注射生理盐水；其余3组每日颈背部皮下注射 d-半乳糖［1000 mg/］造成小鼠衰老模型，同时各组分别灌胃生理盐水、枸杞多糖［200 mg/］、丹参酮［1 500 mg/］。42 d后，测定小鼠背部皮肤组织匀浆中超氧化物歧化酶活力、过氧化脂质代谢产物丙二醛含量和皮肤羟脯氨酸含量。

objective to compare the anti-aging effects of lycium barbarum polysaccharides and tanshinone on the skin of d-galactose-induced mice aging model.methods 60 female mice were randomly divided into 4 groups (n=15):mice in normal control group received subcutaneous injection of normal saline and mice in the other 3 groups received cervicodorsal injection of d-galactose［1000 mg/(kg1·d)］ for 42 d to establish subacute aging model.the experimental groups included agingmodel group,lycium barbarum polysaccharides ［200 mg／group,tanshinone ［1 500 mg／］ group.forty two days later,the dorsal skin samples were collected to determine sod activities、mda and hydroxyproline contents.

60只雌性昆明种小鼠，随机分为4组(n=15)：正常对照组皮下注射生理盐水；其余3组每日颈背部皮下注射 d-半乳糖［1000 mg/］造成小鼠衰老模型，同时各组分别灌胃生理盐水、枸杞多糖［200 mg/］、丹参酮［1 500 mg/］。42 d后，测定小鼠背部皮肤组织匀浆中超氧化物歧化酶活力、过氧化脂质代谢产物丙二醛含量和皮肤羟脯氨酸含量。

Thermal oxidative aging, thermal oxidative aging kinetics and hygrothermal aging of polypropylene/montmorillonite nanocomposites was especially investigated.

并主要研究了复合材料热氧老化性能、热氧老化动力学以及湿热老化性能。

Pristine Li-Al LDHs are synthesized by hydrothermal process in different reaction conditions by varying the aging time for 1 and 24 hours. Both the Li-Al layered double hydroxides (abbreviated as Li-Al LDH1 and Li-Al LDH24 for aging time 1 hour and 24 hours, respectively) were modified by using sulphanilic acid sodium salt hydrate, modified agent to form modified Li-Al LDH1-SAS and Li-Al LDH24-SAS. The morphology of the pristine layered double hydroxides are investigated by using wide angle X-rays diffraction, scanning electron microscopy and particle size analyzer which indicates that the crystallinity and aspect ratio is increased with increasing the aging time from 1 hour to 24 hours. The particle size of Li-Al LDH24 and Li-Al LDH1 are found to be ~1000 nm and ~250 nm, respectively. Both the pristine and modified LDHs are characterized by XRD, FTIR spectra and thermogravimetric analysis.

本研究目的在於改变长晶时间的长短，合成出同径大小的Li-Al LDHs，再经由改质剂sulphanilic acid sodium salt hydrate将Li-Al LDHs无机层材表面有机官能化制备出改质型Li-Al LDHs-SAS，於是进一步藉由扫描式电子显微镜、射径仪和穿透式电子显微镜等仪器分别观察LDHs改质前和改质后其主层结构型态上的变化；从中可以发现Li-Al LDHs随著长晶时间的增加其径有随之增大的趋势，但经有机化改质后其径会由於改质环境的影响明显低许多，针对此现象本实验将未改质和改质后之Li-Al人工无机层材制备成复材进一步探讨其在热性质和难燃特性上的为表现。

Rubber aging inhibitor 4020 chemical name: N-(1,3-DIMETHYLBUTYL-N'-PHENYL-P-PHENYLENEDIAMINE, like anti-aging agent 4010NA, is of para-phenylene diamine ursol anti-aging agent.

橡胶防老剂4020，化学名称：N－（1，3－二甲基丁基）－N－苯基对苯二胺，与防老剂4010NA同属对苯二胺类防老剂。

The results show that it is possible to improve the properties of low carbonsteel against straining and aging by controlling the hot working conditions andthat the grain size and microstructure of killed steel may vary within fairly widelimits and yet its impact values after strain-aging may still remain within the re-quired standard; whereas strict control of the grain size and microstructure is ne-cessary in order to produce rimming steel of required impact value after strain-aging.

结果示：控制热轧条件可以改进&钢三&的显微结构，从而改善了&钢三&机械时效处理后的变脆倾向，其中镇静钢的显微结构和晶粒度可以在较大的范围内改变而成品均可以达到标准的要求，但沸腾钢则要严格地控制其显微结构和晶粒度才能合格。

Extraction in crustaceans, salmon, shrimp, phosphorus, red algae astaxanthin, and removal of reactive oxygen species inhibit the capacity of the antioxidant power is 10 times more carotene, Q10 150 times, 550 times the vitamin can promote cell regeneration, slow down premature skin aging occur, and add the green tea extract can prevent the skin caused by ultraviolet radiation caused by aging, protecting cells to reduce the damage of UV on cell DNA, is effective against free radicals and prevent skin aging.

效用：萃取於甲壳类、鲑鱼、燐虾、红藻的虾红素，具有抑制及清除活性氧的能力，其抗氧化力是胡萝卜素的10倍、Q10的150倍，维他命的550倍，能促进细胞再生，延缓肌肤老化过早发生，并添加绿茶萃取能防止因紫外线造成所造成的皮肤老化，保护细胞减少紫外线对细胞DNA的伤害，有效对抗自由基，防止肌肤老化。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。