Disordered Structure in Crystalline Cyclohexanoxime

Main-chain smectic liquid-crystalline polymers as randomly disordered systems.

We report a high-resolution X-ray lineshape study of main-chain smectic polymers. The results indicate that the layer ordering differs fundamentally from the algebraic decay typical for other smectic liquid-crystalline systems. The lineshapes are best described by broad squared Lorentzians indicating some form of short-range correlations. However, several higher harmonics are observed, which ex...

Electronic Structure of Crystalline Materials

the role of thematic structure in comprehending spoken language

in fact this study is concerned with the relationship between the variation in thematice structure and the comprehension of spoken language. so the study focused on the following questions: 1. is there any relationship between thematic structure and the comprehension of spoken language? 2. which of the themes would have greated thematic force and be easier for the subjects to comprehend? accord...

Phase Transitions and Structure Of Crystalline Polymers

Crystalline polymers build up complex structural entities, which blend amorphous and crystalline domains at a very small scale (≈ 10 nm). The coexistence of domains, which are of molecular, dimensions stems from the fact that the chains tend to fold upon crystallisation: this chain folding is a characteristic feature of polymers, and creates an organisational scale which is unique to polymers. ...

Buckled crystalline structure of mixed ionic salts.

X-ray absorption ne structure (XAFS) measurements of mixed salts Rb x K 1?x Br and RbBr y Cl 1?y at their congruent melting points compositions reveal that their actual structure buckles about the NaCl average structure with an rms angular deviation from collinearity of 7-9. XAFS measures the buckling directly through three body correlations, and veriies the homogene-ity and randomness of the m...