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71.
详细叙述了铅釉熔块的配料及熔制过程,按照熔块与Cr2O3的不同比例配制了釉料,通过对铅釉样品的讨论,弄清了Cr2O3在铅釉中的呈色特点,给出了红色铅釉和黄色铜釉的最佳配方。 相似文献
72.
Stabilization of red anthocyanins on the surface of thermally processed red pears (D'Anjou) through complexation with metallic ions and polymerization was investigated. Pears were treated briefly in an aqueous solution containing stannous (Sn) ion, hydrochloric acid, formaldehyde, and tannic acid prior to steaming and canning processes. Polymerization capacity of the treatment solutions was investigated by monitoring the haze formation of the solutions. Aqueous acetone extracts of the peels from fresh and treated pears at major processing steps (pre-treatment, steam-heating, and canning) were subjected to HPLC qualitative analysis on anthocyanins. The total phenolics (TP) and anthocyanin content (ACN) of the peels were measured by Folin-Ciocalteu assay and pH-differential method, respectively. Polymerization capacity of the solution was influenced by the composition, setting-time, and the time of Sn addition into the formulated solutions. The pre-treatment along with steam-heating resulted in stable red pigments on the peels of canned pears. The new pigments are believed to be the complexes of stannous and phenolics, including anthocyanins. No major newly formed anthocyanins or small phenolics were detected in treated pears. Although developed treatment formula did not represent a commercial application yet, this study revealed an effective approach of retaining red anthocyanins on thermally processed fruits. 相似文献
73.
针对无汞荧光灯的工作特点,研制了稀土硼酸盐红粉材料。实验表明,较好的组成式为Y0.50Gd0。45Eu0.05BO3,合成时硼酸过量15%,适宜的灼烧条件为1140℃,保温2h。粉体既有较高的发光强度,又有适宜的粒度及分散性能可满足粉浆配制要求,制得的无汞荧光灯可具有较高的转换效率。 相似文献
74.
王宏宇 《浙江大学学报(工学版)》1988,(6)
本文报导了一种在线或离线测量微血管中红细胞流速的方法,叙述了电视逐行采样法的测试系统和基本原理。文中也给出了简单的模拟校测装置和动物试验的实测结果。 相似文献
75.
2004年对广东部分红壤9种微量元素含量调查结果表明,9种微量元素平均含量为B 41.38 mg kg-1,Mo21.71 mg kg-1,Cu 77.37 mg kg-1,Pb 33.94 mg kg-1,Zn 265.52 mg kg-1,As 19.018 mg kg-1,Hg 0.056 mg kg-1,Cr 248.95mg kg-1,Cd 0.324 mg kg-1。同族微量元素相比,原子量小的元素的含量大于原子量大的元素的含量。母岩、成土风化作用影响这些微量元素在土壤中的含量。 相似文献
76.
根据Flash MX填充特效.绘制立体效果的红星:根据Flash MX的动面遮罩.制作线-线动面遮罩的特效.最终合成熠熠生辉的红星。 相似文献
77.
以热释电红外元件作为传感器组成的电子防盗系统,正在得到越来越广泛的应用。电子防盗报警系统对国家、集体和个人财产安全所起的作用正在日益得到人们的重视。下面介绍一种简单实用的有线电子报警系统。 相似文献
78.
A virtual machine monitor (VMM) allows a single computer to run two or more operating systems at the same time. VMMs are relatively simple and are typically built to high assurance standards, which means that the quality of isolation provided by a virtual machine monitor is usually greater than that which can be achieved with a general-purpose operating system. This paper discusses how the flexibility afforded by multiple OS environments and the robust isolation provided by a virtual machine monitor can be used to improve client PC security. A prototype system is also described.This paper is neither a product announcement nor an official Microsoft position paper, but rather it is a discussion of interesting configuration options that can be constructed using existing Microsoft and third-party products: in this case two or more operating systems running in conjunction with a virtual machine monitor. 相似文献
79.
80.
Y.‐S. Yao Q.‐X. Zhou X.‐S. Wang Y. Wang B.‐W. Zhang 《Advanced functional materials》2007,17(1):93-100
2‐(2‐tert‐Butyl‐6‐((E)‐2‐(2,6,6‐trimethyl‐2,4,5,6‐tetrahydro‐1H‐pyrrolo[3,2,1‐ij]quinolin‐8‐yl)vinyl)‐4H‐pyran‐4‐ylidene)malononitrile (DCQTB) is designed and synthesized in high yield for application as the red‐light‐emitting dopant in organic light‐emitting diodes (OLEDs). Compared with 4‐(dicyanomethylene)‐2‐tert‐butyl‐6‐(1,1,7,7,‐tetramethyljulolidyl‐9‐enyl)‐4H‐pyran (DCJTB), one of the most efficient red‐emitting dopants, DCQTB exhibits red‐shifted fluorescence but blue‐shifted absorption. The unique characteristics of DCQTB with respect to DCJTB are utilized to achieve a red OLED with improved color purity and luminous efficiency. As a result, the device that uses DCQTB as dopant, with the configuration: indium tin oxide (ITO)/N,N′‐bis(1‐naphthyl)‐N,N′‐diphenyl‐1,1′‐biphenyl‐4,4′‐diamine (NPB; 60 nm)/tris(8‐quinolinolato) aluminum (Alq3):dopant (2.3 wt %) (7 nm)/2,9‐dimethyl‐4,7‐diphenyl‐1,10‐phenanthroline (BCP; 12 nm)/Alq3(45 nm)/LiF(0.3 nm):Al (300 nm), shows a larger maximum luminance (Lmax = 6021 cd m–2 at 17 V), higher maximum efficiency (ηmax = 4.41 cd A–1 at 11.5 V (235.5 cd m–2)), and better chromaticity coordinates (Commission Internationale de l'Eclairage, CIE, (x,y) = (0.65,0.35)) than a DCJTB‐based device with the same structure (Lmax = 3453 cd m–2 at 15.5 V, ηmax = 3.01 cd A–1 at 10 V (17.69 cd m–2), and CIE (x,y) = (0.62,0.38)). The possible reasons for the red‐shifted emission but blue‐shifted absorption of DCQTB relative to DCJTB are also discussed. 相似文献