Local order level enhancement

Similar linear dependences for SP - OPD with various were obtained in Ref. [7] and they testify to molecular mobility level reduction at decrease and extrapolate to various (nonintegral) values at = 1.0. The comparison of these data with the Eq. (1.5) appreciation shows, that reduction is due to local order level enhancement and the condition = 1.0 is realized at values, differing from 2.0 (as it was supposed earlier in Ref [23]). This is defined by pol5miers sfructure quasiequilibrium state achievement, which can be described as follows [24]. Actually, tendency of thermodynamically nonequilibrium solid body, which is a glassy polymer, to equilibrium state is classified within the fimneworks of cluster model as local order level enhancement or (p j increase [24-26], However, this tendency is balanced by entropic essence straightening and tauting effect of polymeric medium macromolecules, that makes impossible the condition (p j= 1.0 attainment. At fully tauted macromolecular chains = 1.0)

polymer structure achieves its quasiequilibrium state at d various values depending on copolymer type, that is defined by their macromolecules different flexibility, characterized by parameter C. ... 

The results of comparison for HDPE samples with sharp notch and without it show, that notch (stiff macroscopic defect) introduction results to V reduction, that is, local order level enhancement, which is expressed in mechanical vitrification of devitrificated amorphous phase part [59]. This effect defines molecular mobility considerable reduction, expressed by decrease, and reduction. The last factor results to d decrease up to the values typical for quasibrittle fracture, that is, d < 2.5 [6]. 

In order to enhance the secnrity levels, the most obvious step undertaken by the Public Transport Operators (PTOs) and local/national authorities is to increase the spending in security-related technologies, with CCTV being the preferred choice, and manpower. These investments are not cheap - security technologies, more security staff and the necessary training required in either cases - but are necessary... 

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