scholarly journals Polymers as Natural Nanocomposites. 2. The Comparative Analysis of Reinforcement Mechanisms

2009 ◽  
Vol 3 (3) ◽  
pp. 183-185
Author(s):  
Musa Bashorov ◽  
◽  
Georgiy Kozlov ◽  
Gennady Zaikov ◽  
Abdulakh Mikitaev ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Cluster Model ◽  
Interfacial Adhesion ◽  
Epoxy Polymer ◽  
Amorphous State ◽  
State Structure ◽  
Structure Description ◽  
Adhesion Level

The complete similarity of reinforcement degree behaviour has been shown for nanocomposite epoxy polymer/Na+-montmorillonite and polyarylate, which is considered as the natural nanocomposite. The polyarylate structure description is given within the framework of cluster model of polymers amorphous state structure. The interfacial adhesion level influences strongly the reinforcement degree of indicated materials.

Three paths to e-service availability: a fuzzy set qualitative comparative analysis among the EU member states

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Justine Marienfeldt
Keyword(s):  
Comparative Analysis ◽  
Fuzzy Set ◽  
Qualitative Comparative Analysis ◽  
Service Availability ◽  
State Structure ◽  
Member States ◽  
Content Type ◽  
Eu Member States ◽  
Government Capacity ◽  
Managerial Innovation

PurposeThis study aims to explore under which institutional and organizational conditions the national e-government reform efforts of EU member states lead to very high availability of e-services.Design/methodology/approachFollowing e-government literature of information systems and public administration research, this study applies an analytical framework encompassing characteristics of the national politico-administrative system (state structure, government capacity, managerial innovation orientation and civil service system) to understand why a common policy framework does not lead to convergence but great variety in the degree of e-service availability. A comparative case study approach using fuzzy set qualitative comparative analysis (fsQCA) is applied to systematically compare e-service availability in the former 28 EU member states.FindingsThree configurations of sufficient conditions are identified: government capacity in conjunction with either bureaucratic human resource practices, centralized state structure or managerial innovation orientation. Three country clusters are derived: effective bureaucrats, effective centralists and effective managers.Originality/valueThe results demonstrate the importance of administrative effectiveness for the digital transformation. Rather than mimicking best practices, countries are advised to learn from better performing countries that are most similar in terms of institutional and organizational characteristics of the politico-administrative system.

Interfacial adhesion: improving the mechanical properties of silicon nitride fibre - epoxy polymer composites

2018 ◽  
Vol 26 (3) ◽  
pp. 263-273 ◽  
Author(s):  
Matilda R. Hayward ◽  
James H. Johnston ◽  
Troy Dougherty ◽  
Karnika De Silva
Keyword(s):  
Mechanical Properties ◽  
Silicon Nitride ◽  
Polymer Composites ◽  
Interfacial Adhesion ◽  
Epoxy Polymer

Application of cluster model for the description of epoxy polymer structure and properties

Polymer ◽  
1999 ◽  
Vol 40 (4) ◽  
pp. 1045-1051 ◽  
Author(s):  
G.V. Kozlov ◽  
V.A. Beloshenko ◽  
V.N. Varyukhin ◽  
Yu.S. Lipatov
Keyword(s):  
Cluster Model ◽  
Epoxy Polymer ◽  
Polymer Structure ◽  
Structure And Properties

A cluster model for the polymer amorphous state

2001 ◽  
Vol 171 (7) ◽  
pp. 717 ◽  
Author(s):  
Georgii V. Kozlov ◽  
Viktor U. Novikov
Keyword(s):  
Cluster Model ◽  
Amorphous State

A cluster model for the polymer amorphous state

2001 ◽  
Vol 44 (7) ◽  
pp. 681-724 ◽  
Author(s):  
Georgii V Kozlov ◽  
Viktor U Novikov
Keyword(s):  
Cluster Model ◽  
Amorphous State

Glass Formation and Structure of the Glasses in the MoO3-Nd2O3-Bi2O3 System

2008 ◽  
Vol 39-40 ◽  
pp. 73-76 ◽  
Author(s):  
Reni Iordanova ◽  
Lyubomir Aleksandrov ◽  
Angelina Stoyanova ◽  
Yanko B. Dimitriev
Keyword(s):  
Comparative Analysis ◽  
Spectral Data ◽  
Infrared Spectra ◽  
Glass Formation ◽  
Amorphous State ◽  
Partial Transformation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure Of Glasses ◽  
High Cooling Rates

Low melting glasses in the MoO3-Nd2O3-Bi2O3 system were obtained at slow (102 K/s) and high cooling rates (104-105 K/s). The amorphous state of the samples was proved by X-ray diffraction. Comparative analysis of the infrared spectra of the obtained glasses and other available molybdate spectral data was carried out. The structure of glasses with a high MoO3 content was found to consist of corner shared MoO6 units. The increasing of Nd2O3 and Bi2O3 lead to partial transformation of MoO6 to MoO4 units, due to breaking of Mo-O-Mo linkage.

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