Regulation of the Phase Structure in the Crystallizing Curing System PCL-DGEBA.

Qualitative and quantitative aspects of the formation of various types of phase structures, sizes and compositions were considered. For the studied polycaprolactone-epoxy resin/4,4'-diaminediphenylsulfone system, a phase diagram characterized by amorphous separation with a lower critical solution temperature was constructed and its evolution was traced with increasing conversion degree of epoxy groups. A method is proposed for determining the temperature-concentration parameters that determine the type of phase structure of composite materials, based on the optical interferometry method.

Modification of Epoxy Coatings with Fluorocontaining Organosilicon Copolymers.

Preparation of hydrophobic coatings is still a challenge for researchers in various fields of science. One of the easiest ways consists of the use of special modifiers. However, usually such modifiers are poorly compatible with organic polymeric matrixes, which leads to segregation of modifiers and deterioration of coating properties.

[Neuroimaging of cerebral small vessel disease in mild cognitive impairment in older adults.].

Cerebral small vessel disease (CSVD) - is a clinical and radiological phenomenon characteristic of older adults. Currently, the extent of white matter lesions (WML) in patients with moderate cognitive disorders remains uncertain. Also, the relationship of cognitive impairment with the volume of WML has not been sufficiently studied.

Phase Equilibria, Diffusion and Structure in the Epoxypolycaprolactone System.

Currently, there is no quantitative approach for the phase structure of cured thermoplastic systems modified with thermoplastic predicting. To solve this problem, we carried out the first stage of the study on a model polycaprolactone-epoxy oligomer (PCL-DGEBA) system. Using differential scanning calorimetry (DSC), refractometry and optical interferometry, a phase diagram for PCL-DGEBA mixtures was constructed, and the Flory-Huggins interaction parameters of PCL-DGEBA mixtures were calculated.

Facial shape differences between rats selected for tame and aggressive behaviors.

Domestication has been consistently accompanied by a suite of traits called the domestication syndrome. These include increased docility, changes in coat coloration, prolonged juvenile behaviors, modified function of adrenal glands and reduced craniofacial dimensions. Wilkins et al recently proposed that the mechanistic factor underlying traits that encompass the domestication syndrome was altered neural crest cell (NCC) development.