Characterization of DC magnetron sputtering deposited thin films of TiN for SBN/MgO/TiN/Si structural waveguide

INTRODUCTION Monocrystalline SBN (Strontium barium nio-bium, SrxBa1?xNb2O6, denoted SBNx?100, where 0.25≤x≤0.75) solid solution, is currently being inves-tigated as potential material for many micro-device applications, such as piezoelectric infrared detectors, piezoelectric, electro-optic modulators, and holo-graphic storage (Koch et al., 1998), because SBN has one of the largest known linear electro-optic coeffi-cients (r33=1300 pm/V for SBN75), two orders of magnitude larger th…     

"用油膜法估测分子的大小"的几点做法

针对“用油膜法估测分子的大小”实验在操作中存在的问题,从器材的选用、制作和实验方法上进行了改进,利用自制的滴管和撒粉器,采用自由滴的方法进行实验,提高了实验的成功率和实验结果的隹确度.     

盐酸头孢他美酯片含量测定方法研究

目的：分析测定盐酸头孢他美酯片的含量。方法：利用高效液相色谱法。结果：该方法在O．04～0．4mg／ml范围内头孢他美酯面积与浓度呈良好的线性关系,线性方程为Y=3．289E-4X＋2．546E—1（r=0．999）。回收率为99．8％,RSD=0．52％。结论：方法简便,快速,准确,适用于该产品质量控制。     

Post Sherlockian Times - Research into the Adaptations of the Novel Sherlock Holmes

Sherlock Holmes, the literary image that Arthur Conan Doyle created in The Adventure of Sherlock Holmes, has undoubt?edly become an iconic figure of detective. For over a century, a number of films and...     

样品的倾斜度对椭偏法测量薄膜参数的影响

为了研究薄膜样品的倾斜程度对椭偏法测量薄膜参数的影响,运用椭偏法测量原理及Matlab软件,分析与计算了薄膜样品的倾斜度对测量薄膜参数的影响程度,结果表明这种影响是很小的,并通过实验验证了理论分析与实验结果是相符的。为迅速调整好椭偏仪提供了理论和实验依据。     

摄影文学还是文学摄影

当前摄影文学讨论中所谓“摄影”、“文学”诸元素经“审美复合”已产生新质的观点值得商榷。因为摄影文学作品中“摄影”是目的 ,是主体 ,“文学”是工具 ,是附庸。它们根本未能化合 ,仍是两张皮。据此 ,“摄影文学”宜更名“文学摄影”。     

论影视艺术的差异性

着重对影视传播媒介、受者的角度、题材选择、叙述方式、审美心理等方面所表现出来的差异性作一些分析,以期使我们对影视的分流和建设有一个参照性的认识和理解。     

Acrylic emulsion paint films: The effect of solution pH,conductivity, and ionic strength on film swelling and surfactant removal

To date, a limited number of aqueous conditions have been tested experimentally as potential cleaning reagents on modern acrylic paint films. Those assessed have tended to extract measurable quantities of paint film components and distort the paint films physically. In this paper the results of a series of experiments designed to examine pH, conductivity, and specific ion effects of potential aqueous cleaning solutions on a series of commercial acrylic paints are reported. A three-dimensional microscopic technique was used to characterize the physical (volume and surface roughness) changes and liquid chromatography-tandem mass spectrometry was used to characterize the chemical (extracted surfactant) changes following paint film exposure to the aqueous solution. The tested paint films in this study clearly exhibit an isotonic point below which swelling and extraction is significant, and above which the swelling and extraction is diminished. Manipulation of conductivity and the ionic species in solution can reduce both the physical film changes and surfactant extraction from acrylic paint films; while pH appears to be of limited use in controlling aqueous cleaning effects. Moreover, there seems to be a specific ion effect for both swelling and de-swelling in acrylic paint films that can be rationalized through the Hofmeister Series.     

甲醇生产废水处理工艺研究

甲醇厂生产废水及生活污水、实验废水混合在一起,在该厂停产检修期间,对原污水处理系统进行改造,采用推流式生化处理系统及紫外线杀菌处理系统,就改造完成后的系统调试和运行中出现的一些问题进行有益的讨论和研究。     

浅谈纪录片创作实践教育的三个方面

纪录片创作的实践教育将成为高校新闻传播教育的重要课题,理念教育建立复杂的真实观、素质教育培养道德修养、技术教育构建职业基础构成了纪录片创作教育的基本要素.