Experimental and theoretical investigations of the role of (Co–Ti) in the modification of the functional properties of nanocrystalline Ni–Zn ferrites

2022 ◽  
Vol 137 (1) ◽  
Author(s):  
K. E. Rady ◽  
E. M. Farag ◽  
K. M. El-Shokrofy ◽  
R. A. Elsad
2021 ◽  
Vol 866 ◽  
pp. 158982
Author(s):  
Sourabh Wajhal ◽  
S.K. Mishra ◽  
A.B. Shinde ◽  
P.S.R. Krishna ◽  
R. Mittal

Biochemistry ◽  
2001 ◽  
Vol 40 (17) ◽  
pp. 5243-5248 ◽  
Author(s):  
Karim S. Echtay ◽  
Martin Bienengraeber ◽  
Martin Klingenberg

2017 ◽  
Vol 36 (4) ◽  
pp. 309-325 ◽  
Author(s):  
Wangzhong Mu ◽  
Pär Göran Jönsson ◽  
Keiji Nakajima

AbstractIntragranular ferrite (IGF), which nucleates from specific inclusion surfaces in low alloy steels, is the desired microstructure to improve mechanical properties of steel such as the toughness. This microstructure is especially important in the coarse grain heat affected zone (CGHAZ) of weldments. The latest review paper focusing on the role of non-metallic inclusions in the IGF formation in steels has been reported by Sarma et al. in 2009 (ISIJ int., 49(2009), 1063–1074). In recent years, large amount of papers have been presented to investigate different issues of this topic. This paper mainly highlights the frontiers of experimental and theoretical investigations on the effects of inclusion characteristics, such as the composition, size distribution and number density, on the IGF formation in low carbon low-alloyed steels, undertaken by the group of Applied Process Metallurgy, KTH Royal Institute of Technology. Related results reported in previous studies are also introduced. Also, plausible future work regarding various items of IGF formation is mentioned in each section. This work aims to give a better control of improving the steel quality during casting and in the heat affected zone (HAZ) of weldment, according to the concept of oxide metallurgy.


2021 ◽  
Vol 39 (2) ◽  
pp. 147-157
Author(s):  
Susie Crow

The ballet class is a complex pedagogical phenomenon in which an embodied tradition is transmitted in practice from one generation to the next, shaping not just the dancing but the attitudes and perceptions of dancers throughout their careers. This paper emerges from observations and experience of recent and current ballet class practice, and theoretical investigations into embodied learning in the arts. It outlines the influential role of large hegemonic institutions in shaping how ballet is currently taught and learned; and the effect of this on the class's evolving relation to ballet's repertoire of old and emerging dances as artworks. It notes the increasing importation into ballet pedagogy of thinking rooted in sports science, engendering the notion of the dancer as athlete; and of historic attitudes which downplay the agency of the dancer. I propose an alternative model for understanding the nature of learning in the ballet class, relating it to what Donald Schön calls ‘deviant traditions of education for practice’ in other performing and visual arts ( Schön 1987 p16). I look at the dancer's absorption via the class of ballet's danse d’école, its core technique of academic dance content. I suggest how this process might more constructively be understood through the lens of craft learning and the development of craftsmanship via apprenticeship, the dancer learning alongside the teacher as experienced artist practitioner who models behaviours that foster creativity.


Nanoscale ◽  
2021 ◽  
Author(s):  
Mahdi Zeidi ◽  
Chun Il Kim ◽  
Chul B B. Park

Interface plays a crucial role on the physical and functional properties of polymer nanocomposites, yet its effects have not been fully recognized in the setting of classical continuum-based modeling. In...


2016 ◽  
Vol 28 (6) ◽  
pp. 4914-4924 ◽  
Author(s):  
Tapati Sarkar ◽  
Sergey A. Ivanov ◽  
Elena A. Fortalnova ◽  
Ekaterina D. Politova ◽  
Marina G. Safronenko ◽  
...  

2017 ◽  
Vol 31 (06) ◽  
pp. 1750039 ◽  
Author(s):  
Wentao Lee ◽  
Haixiang He ◽  
Maodu Chen

Employing the state-to-state time-dependent quantum wave packet method, the Au[Formula: see text]H2 reactive scattering with initial states [Formula: see text], [Formula: see text] and 1 were investigated. Total reaction probabilities, product state-resolved integral cross-sections (ICSs) and differential cross-sections (DCSs) were calculated up to collision energy of 4.5 eV. The numerical results show that total reaction probabilities and ICSs increase with increasing collision energies, and there is little effect to the reactive scattering processes from the rotational excitation of H2 molecule. Below collision energy of around 3.0 eV, the role of the potential well in the entrance channel is significant and the reactive scattering proceeds dominantly by an indirect process, which leads to a nearly symmetric shape of the DCSs. With collision energy higher than 4.0 eV, the reactive scattering proceeds through a direct process, which leads to a forward biased DCSs, and also a hotter rotational distributions of the products. Total ICS agrees with the results by the quasi-classical trajectories theory very well, which suggests that the quantum effects in this reactive process are not obvious. However, the agreement between the experimental total cross-section and our theoretical result is not so good. This may be due to the uncertainty of the experiment or/and the inaccuracy of the potential energy surface.


Sign in / Sign up

Export Citation Format

Share Document