Modelling of Microstructural Evolution of Concrete under Work Conditions and in Hardening Process

2009 ◽  
pp. 347-367
Author(s):  
V. Smilauer ◽  
Z. Bittnar
Keyword(s):  
Microstructural Evolution ◽  
Work Conditions ◽  
Hardening Process

Microstructural Evolution in Reduced TiO2

1981 ◽  
Vol 39 ◽  
pp. 74-75
Author(s):  
W. T. Donlon ◽  
S. Shinozaki ◽  
E. M. Logothetis ◽  
W. Kaizer
Keyword(s):  
Microstructural Evolution ◽  
Point Defects ◽  
Extended Defects ◽  
Small Deviations ◽  
Controlled Atmospheres ◽  
Limited Solubility ◽  
Thin Foils ◽  
Heat Treated ◽  
Porous Polycrystalline ◽  
Crystallographic Shear

Since point defects have a limited solubility in the rutile (TiO2) lattice, small deviations from stoichiometry are known to produce crystallographic shear (CS) planes which accomodate local variations in composition. The material used in this study was porous polycrystalline TiO2 (60% dense), in the form of 3mm. diameter disks, 1mm thick. Samples were mechanically polished, ion-milled by conventional techniques, and initially examined with the use of a Siemens EM102. The electron transparent thin foils were then heat-treated under controlled atmospheres of CO/CO2 and H2 and reexamined in the same manner.The “as-received” material contained mostly TiO2 grains (∼5μm diameter) which had no extended defects. Several grains however, aid exhibit a structure similar to micro-twinned grains observed in reduced rutile. Lattice fringe images (Fig. 1) of these grains reveal that the adjoining layers are not simply twin related variants of a single TinO2n-1 compound. Rather these layers (100 - 250 Å wide) are alternately comprised of stoichiometric TiO2 (rutile) and reduced TiO2 in the form of Ti8O15, with the Ti8O15 layers on either side of the TiO2 being twin related.

Conditions for atomic imaging of mullite

1989 ◽  
Vol 47 ◽  
pp. 418-419
Author(s):  
T. A. Epicier ◽  
G. Thomas
Keyword(s):  
Oxygen Vacancies ◽  
High Resolution Electron Microscopy ◽  
Ceramic Materials ◽  
Work Conditions ◽  
Real Space ◽  
Potential Candidate ◽  
Silicate Mineral ◽  
Resolution Electron ◽  
The Subject ◽  
Aluminium Silicate

Mullite is an aluminium-silicate mineral of current interest since it is a potential candidate for high temperature applications in the ceramic materials field.In the present work, conditions under which the structure of mullite can be optimally imaged by means of High Resolution Electron Microscopy (HREM) have been investigated. Special reference is made to the Atomic Resolution Microscope at Berkeley which allows real space information up to ≈ 0.17 nm to be directly transferred; numerous multislice calculations (conducted with the CEMPAS programs) as well as extensive experimental through-focus series taken from a commercial “3:2” mullite at 800 kV clearly show that a resolution of at least 0.19 nm is required if one wants to get a straightforward confirmation of atomic models of mullite, which is known to undergo non-stoichiometry associated with the presence of oxygen vacancies.Indeed the composition of mullite ranges from approximatively 3Al2O3-2SiO2 (referred here as 3:2-mullite) to 2Al2O3-1SiO2, and its structure is still the subject of refinements (see, for example, refs. 4, 5, 6).

HYGIENIC PECULIARITIES OF A SURGEON'S WORK CONDITIONS IN CLINICAL HOSPITAL

2009 ◽  
Vol 2009 (4) ◽  
pp. 16-22
Author(s):  
O.P. Yavorovsky ◽  
◽  
V.I. Zenkina ◽  
Yu.O. Paustovsky ◽  
◽  
...  
Keyword(s):  
Work Conditions ◽  
Clinical Hospital

DRYING-HARDENING PROCESS IN CEMENT PASTES

1970 ◽  
Author(s):  
Marc Z. Jeric ◽  
Herbert B. Nottage
Keyword(s):  
Cement Pastes ◽  
Hardening Process

The relationship between staff organizational loyalty and job satisfaction and enthusiasm

2020 ◽  
Vol 2-3 (20) ◽  
pp. 101-110
Author(s):  
Andrii Trofimov ◽  
◽  
Alina Strymetska ◽  
Keyword(s):  
Job Satisfaction ◽  
Organizational Commitment ◽  
Relationship Satisfaction ◽  
Market Economy ◽  
Significant Relationship ◽  
Work Conditions ◽  
Satisfaction Questionnaire ◽  
Organizational Loyalty ◽  
The Relationship

Introduction. In a market economy, staff organizational loyalty is one of the key challenges. Aim. To explore the relationship between staff organizational loyalty and their job satisfaction and enthusiasm. Methods: J. Meyer and N. Allen Scale of Organizational Loyalty, Utrecht Scale of Work Enthusiasm, and Integral Job Satisfaction questionnaire. Results. There is a statistically significant relationship between staff job satisfaction and organizational loyalty. Overall staff organizational loyalty has been shown to relate with such scales of work enthusiasm as "energy", "commitment", and "general enthusiasm". Conclusions. Staff organizational loyalty significantly correlates with staff job satisfaction (in particular, with such components of job satisfaction as job achievement satisfaction, colleagues relationship satisfaction, and work conditions satisfaction) and work enthusiasm (in particular, with staff organizational commitment).

The influence of Mo/B atomic ratio on microstructural evolution and mechanical properties of Mo2FeB2-based cermets

2019 ◽  
Vol 110 (7) ◽  
pp. 664-671
Author(s):  
Jiajie Zhang ◽  
Yong Zheng ◽  
Wei Zhou ◽  
Guotao Zhang ◽  
Zheng Ke ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Microstructural Evolution ◽  
Atomic Ratio

Results of Estimation of Work Conditions by Different Methods

2019 ◽  
Vol 22 (2) ◽  
pp. 131-133
Author(s):  
T.Yu. Lustgarten ◽  
Keyword(s):  
Work Conditions

A Review on Employee’s Voluntary Turnover: A Psychological Perspective

2020 ◽  
Vol 5 (2) ◽  
pp. 107-112
Author(s):  
Yan Zhen ◽  
Zuraina Dato Mansor
Keyword(s):  
Job Satisfaction ◽  
Turnover Intention ◽  
Turnover Rate ◽  
Psychological Capital ◽  
Voluntary Turnover ◽  
Work Conditions ◽  
Jel Classification ◽  
Mediating Effect ◽  
Psychological Perspective ◽  
The Individual

Objective – High voluntary turnover rate has become the focus of most employers and scholars in related fields. Although employers have attempted to use a variety of retention strategies to retain qualified and skilled employees, the turnover rate remains high in the vast majority of industries around the world. Methodology/Technique – Past studies are concerned mostly with employees’ external demands such as salaries, fringe benefits, work conditions and less focus has been given on the importance of employees’ internal needs based on psychological capital. Therefore, there is a need to perform a study on the turnover from this perspective as it is crucial not only to retain the individual but also to ensure their contentment and satisfaction are fulfilled by their organizations. Findings – This paper undertakes a review of existing literature which specifically addresses the perspectives of individual psychology, and simultaneously explains the relationship between the two psychological factors (namely psychological capital and person-environment fit) and the turnover intention with the mediating effect of job satisfaction. Novelty – The arguments are presented to emphasize the needs to carry out this study. Type of Paper: Review. Keywords: Psychological Capital; Person-organization Fit; Job Satisfaction; Turnover Intention. Reference to this paper should be made as follows: Zhen, Y; Mansor, Z.D. 2020. A Review on Employee’s Voluntary Turnover: A Psychological Perspective, J. Mgt. Mkt. Review 5(2) 107 – 112 https://doi.org/10.35609/jmmr.2020.5.2(3) JEL Classification: M54, Z32.

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