scholarly journals Microstructure analysis of polyurethane based polishing materials

2021 ◽  
pp. 3-6
Author(s):  
D. I. Terashkevich ◽  
E. S. Bokova ◽  
A. S. Ginzburg ◽  
G. M. Kovalenko
Keyword(s):  
Porous Structure ◽  
Structure Analysis ◽  
Microstructure Analysis ◽  
Planarization Process

This paper presents the results of porous structure analysis of polishing materials based on polyurethanes used in chemicalmechanical planarization process of IC layers.

Effects of vacuum soaking on the hydration, steaming, and physiochemical properties of japonica rice

2021 ◽  
Vol 85 (3) ◽  
pp. 634-642
Author(s):  
Qiuyun Li ◽  
Sen Li ◽  
Xiao Guan ◽  
Kai Huang ◽  
Fengbo Zhu
Keyword(s):  
Porous Structure ◽  
Water Absorption ◽  
Microstructure Analysis ◽  
Japonica Rice ◽  
Starch Granules ◽  
Gelatinization Temperature ◽  
Relative Crystallinity ◽  
Physiochemical Properties ◽  
Essential Step ◽  
Density Of Water

ABSTRACT Soaking is an essential step in the processing of various rice products. In this study, the influences of vacuum soaking on hydration, steaming, and physiochemical properties of rice were investigated. Results showed that vacuum soaking accelerated water absorption as well as affected the mobility and density of water protons inside rice during soaking. Vacuum soaking could considerably shorten the optimal steaming time from 58 to 32 min and reduce the adhesiveness of steamed rice. Microstructure analysis of rice revealed that porous structure was formed on rice surface and the arrangement of starch granules became loosened after vacuum soaking. Moreover, vacuum soaking slightly reduced the relative crystallinity of rice starches without altering the crystalline type. The gelatinization temperature as well as the peak and trough viscosity was also decreased after vacuum soaking. Our study suggested that vacuum soaking was conducive to improve the soaking and steaming properties of rice.

200kv superconducting cryo electron microscope

1987 ◽  
Vol 45 ◽  
pp. 642-643
Author(s):  
M. Iwatsuki ◽  
Y. Kokubo ◽  
Y. Harada ◽  
J. Lehman
Keyword(s):  
Electron Microscope ◽  
Structure Analysis ◽  
Organic Materials ◽  
Strong Interactions ◽  
Specimen Preparation ◽  
Great Effort ◽  
Electron Microscopic ◽  
Crystal Fields ◽  
Special Skill ◽  
Long Time

In recent years, the electron microscope has been significantly improved in resolution and we can obtain routinely atomic-level high resolution images without any special skill. With this improvement, the structure analysis of organic materials has become one of the interesting targets in the biological and polymer crystal fields.Up to now, X-ray structure analysis has been mainly used for such materials. With this method, however, great effort and a long time are required for specimen preparation because of the need for larger crystals. This method can analyze average crystal structure but is insufficient for interpreting it on the atomic or molecular level. The electron microscopic method for organic materials has not only the advantage of specimen preparation but also the capability of providing various information from extremely small specimen regions, using strong interactions between electrons and the substance. On the other hand, however, this strong interaction has a big disadvantage in high radiation damage.

The Russian ruble crisis of December 2014

2016 ◽  
pp. 66-86
Author(s):  
A. Obizhaeva
Keyword(s):  
Microstructure Analysis ◽  
Future Market ◽  
Effective Response ◽  
Large Order ◽  
Short Period ◽  
The Face ◽  
Front Running ◽  
Futures And Options

The paper presents a microstructure analysis of the crash of the Russian ruble in mid-December 2014. The author shows that the market break probably happened due to the execution of a large order that converted Russian rubles into U.S. dollars over a short period of a few days. Expirations of futures and options as well as possible front-running could have exacerbated the collapse of the Russian currency. The paper discusses measures taken by the Moscow Exchange and Bank of Russia during the episode and makes several recommendations to prevent a repetition of the similar events and provide an effective response in the face of future market breaks.

RETRIEVE – a system for XRPD phase and structure analysis

2009 ◽  
Vol 2009 (30) ◽  
pp. 209-214 ◽  
Author(s):  
P. S. Dubinin ◽  
I. S. Yakimov ◽  
O. E. Piksina ◽  
Y. I. Yakimov ◽  
A. N. Zaloga
Keyword(s):  
Structure Analysis
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