变色性

Approved the substitution effect of 2, 2-diphenylnaphthalinspyran on the phenyl ring, and clarified the property of the compound is not determined only by the pyran planarity and C-O bond, it not only changed the theoretic basis, but also provide a way to find materials with new properties.

经单晶分析证实了2，2-二苯基萘并吡喃的苯基上取代基的种类及其位置对光致变色性质的重要影响，改变了只有吡喃平面性及其C-O影响性质的观点，不仅改变了理论依据，还指导有望开发出新性质材料的方向。

Why wear a radiation suit computer, mobile phone, all kinds of home appliances have become indispensable in our lives as part of computer radiation and electromagnetic waves on the human body can cause the following hazards: 1, dizziness, fatigue, insomnia, neurasthenia syndrome and so on; 2, cardiovascular disease, hypertension, palpitation, autonomic dysfunction; 3, pregnant women, abortion, fetal malformation, discoloration body distortion; 4, female menstrual cycle disorder, male sexual function decline, hair loss and white hair; 5, leukemia ( in particular are more dangerous to children), cancer, Cancer, and harm the body's immune system, a silent harm our health.

电脑、手机、各种家电已成为我们生活中不可少的一部分，电脑的辐射和电磁波对人体会造成如下危害：1、头昏、乏力、失眠、神经衰弱综合症等；2、心血管疾病、高血压、心悸、植物神经功能紊乱；3、孕妇流产、胎儿畸形、变色体畸变；4、女性月经周期紊乱、男性性机能减退、脱发和白发；5、白血病、癌症、肿瘤、并对人体免疫系统造成危害，无声的伤害着我们的健康。

Sub-AS Copy, highlight the Copy of Copy and calibration of three methods, you can respectively and as is the same as the original black and white contrast than the original smirch large and calibration, color photos.

分原样翻拍、突出性翻拍和校正翻拍三种方法，则可分别获得与原样相同，比原件黑白反差大及校正原件污斑、变色的照片。

Conjugated unsaturation of abietic resin acids can be removed through catalytic hydrogenation to overcome the shortcomings of oxidation and color degradation in rosin.

将松香催化加氢可去除枞酸型树脂酸的共轭不饱和性，克服其易于氧化变色的缺点。

In the solvent does not occur in chromotropic, fading, and dry in the system of solvent release.

在相应的溶剂体系中，不会发生变色、褪色现象，且在体系干燥时有着良好的溶剂释放性。

As a result, the pH paper is 7, that is, radiofrequent, keep neutrase gold monlchamus chromotropic.

因此，纸弛的pH值为7，即呈洋性，可以灵验制止金不朱变色。

If glazing products ink for thermotolerance and anti-acid, printing graphics and text will be chromotropic or produce quality wrinkle the skin, and so on.

如果上光产品所用油墨的耐热性和耐酸性差，印品图文就会变色或产生起皱皮等质量故障。

The film should have a good light resistance, low-light long exposure to geometric dimensions that cannot be easily chromotropic, remained stable.

3薄膜应具有良好的耐光性，在光线长时间照射下不易变色，几何尺寸保持稳定。

The chemical properties of gold ink too with acids, alkalis and sulfide contact occur to varying degrees, and that its metallic luster greatly reduced and Kim monlchamus becomes nigrescent, and second, it's easy to gold ink also with air, caused by water vapor chromotropic reactions, so that when you save the Gold Ink containers need to be tightened.

金墨的化学性质不够稳定，跟酸、碱和硫化物接触会发生不同程度的化学变化，而使它的金属光泽性大为降低，金墨就会显得发黑；其次，金墨还很容易跟空气、水蒸气发生化学反应而引起变色，因此，在保存金墨时一定要将容器密封盖严。

The chemical properties of gold ink too with acids, alkalis and sulfide contact occur to varying degrees, and that its metallic luster greatly reduced and Kim monlchamus becomes nigrescent, and second, it's easy to gold ink also with air, caused by water vapor chromotropic reactions, so that when you save the Gold Ink containers need to be tightened.

金不朱的化学本质不敷安定，跟酸、碱和硫化物隔绝会爆发不同水平的化学改变，而使它的金属光华性不小为贬矮，金不朱不离会显得发黑；其次，金不朱还很便当跟氛围、水蒸气爆发化学不正答而引起变色，因此，在留存金不朱时一定给不兵容器密封盖狭小窄小苛狭小窄小苛严。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。