scholarly journals The role of the Ti surface roughness in the self-ordering of TiO2 nanotubes: a detailed study of the growth mechanism

2014 ◽  
Vol 2 (24) ◽  
pp. 9067-9078 ◽  
Author(s):  
A. Apolinário ◽  
C. T. Sousa ◽  
J. Ventura ◽  
J. D. Costa ◽  
D. C. Leitão ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Growth Mechanism ◽  
Tio2 Nanotubes ◽  
The Self ◽  
Hexagonal Arrangement

Investigation of the effect of Ti surface roughness on the formation, organization, hexagonal arrangement and length of TiO2 NTs.

scholarly journals Effect of Surface Roughness on Aggregation of Polypeptide Chains: A Monte Carlo Study

Biomolecules ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 596
Author(s):  
Nguyen Truong Co ◽  
Mai Suan Li
Keyword(s):  
Surface Roughness ◽  
Self Assembly ◽  
Molecular Mechanisms ◽  
Monte Carlo Study ◽  
The Self ◽  
Living Organisms ◽  
Polypeptide Chains ◽  
The Impact ◽  
Kinetics Of

The self-assembly of amyloidogenic peptides and proteins into fibrillar structures has been intensively studied for several decades, because it seems to be associated with a number of neurodegenerative diseases, such as Alzheimer’s and Parkinson’s disease. Therefore, understanding the molecular mechanisms of this phenomenon is important for identifying an effective therapy for the corresponding diseases. Protein aggregation in living organisms very often takes place on surfaces like membranes and the impact of a surface on this process depends not only on the surface chemistry but also on its topology. Our goal was to develop a simple lattice model for studying the role of surface roughness in the aggregation kinetics of polypeptide chains and the morphology of aggregates. We showed that, consistent with the experiment, an increase in roughness slows down the fibril formation, and this process becomes inhibited at a very highly level of roughness. We predicted a subtle catalytic effect that a slightly rough surface promotes the self-assembly of polypeptide chains but does not delay it. This effect occurs when the interaction between the surface and polypeptide chains is moderate and can be explained by taking into account the competition between energy and entropy factors.

The role of the self in creative expression

2014 ◽  
Author(s):  
Kristin Donnelly ◽  
Radmila Prislin ◽  
Ryan Nicholls
Keyword(s):  
Creative Expression ◽  
The Self

The role of the self in organizational justice

2007 ◽  
Author(s):  
D. Ramona Bobocel ◽  
Russell E. Johnson ◽  
Joel Brockner
Keyword(s):  
Organizational Justice ◽  
The Self

The role of egocentrism in estimating social evaluations of the self

2004 ◽  
Author(s):  
John Chambers ◽  
Nick Epley ◽  
Paul Windschitl
Keyword(s):  
The Self

From Container to Claustrum: Projective Identification in Couples

2014 ◽  
Vol 4 (2) ◽  
Author(s):  
Tamara Feldman
Keyword(s):  
Psychological Health ◽  
Projective Identification ◽  
The Self ◽  
The Other ◽  
Intimate Partners ◽  
And Control ◽  
The Relationship ◽  
As If

This paper is a contribution to the growing literature on the role of projective identification in understanding couples' dynamics. Projective identification as a defence is well suited to couples, as intimate partners provide an ideal location to deposit unwanted parts of the self. This paper illustrates how projective identification functions differently depending on the psychological health of the couple. It elucidates how healthier couples use projective identification more as a form of communication, whereas disturbed couples are inclined to employ it to invade and control the other, as captured by Meltzer's concept of "intrusive identification". These different uses of projective identification affect couples' capacities to provide what Bion called "containment". In disturbed couples, partners serve as what Meltzer termed "claustrums" whereby projections are not contained, but imprisoned or entombed in the other. Applying the concept of claustrum helps illuminate common feelings these couples express, such as feeling suffocated, stifled, trapped, held hostage, or feeling as if the relationship is killing them. Finally, this paper presents treatment challenges in working with more disturbed couples.

Cartesian Fingerprints in Beckett's Imagination Dead Imagine

2012 ◽  
Vol 21 (2) ◽  
pp. 223-243
Author(s):  
Irit Degani-Raz
Keyword(s):  
The Self ◽  
Levels Of Abstraction ◽  
The Media ◽  
The Mind ◽  
Limiting Case

The idea that Beckett investigates in his works the limits of the media he uses has been widely discussed. In this article I examine the fiction Imagination Dead Imagine as a limiting case in Beckett's exploration of limits at large and the limits of the media he uses in particular. Imagination Dead Imagine is shown to be the self-reflexive act of an artist who imaginatively explores the limits of that ultimate medium – the artist's imagination itself. My central aim is to show that various types of structural homologies (at several levels of abstraction) can be discerned between this poetic exploration of the limits of imagination and Cartesian thought. The homologies indicated here transcend what might be termed as ‘Cartesian typical topics’ (such as the mind-body dualism, the cogito, rationalism versus empiricism, etc.). The most important homologies that are indicated here are those existing between the role of imagination in Descartes' thought - an issue that until only a few decades ago was quite neglected, even by Cartesian scholars - and Beckett's perception of imagination. I suggest the use of these homologies as a tool for tracing possible sources of inspiration for Beckett's Imagination Dead Imagine.

Samuel Beckett's Disruptive Translations of ‘je voudrais que mon amour meure’

2019 ◽  
Vol 28 (2) ◽  
pp. 163-178
Author(s):  
Trask Roberts
Keyword(s):  
Samuel Beckett ◽  
The Self ◽  
Irish Poetry ◽  
Poetic Translation

Self-translators are often granted freedoms in their translations unimaginable for standard translators. Whereas a standard translation usually prizes sameness (or invisibility as Lawrence Venuti argues), the self-translator may instead highlight difference or disruption. A burgeoning subfield of criticism has outlined the ways in which one of the most famous of these self-translators, Samuel Beckett, makes use of his role as translator to further the reach of his work beyond the constraints of a monolingual text. Whereas most of this criticism has taken aim at Beckett's prose and theater, this essay asks what can be gleaned about Beckett's translation style from his early poetry. Here I focus on Beckett's four-line, untitled poem which begins ‘je voudrais que mon amour meure’ (‘I would like my love to die’). Originally published in 1948 in the bilingual journal Transition Forty-eight, this poem would go on to be edited, translated, reedited, and retranslated over the course of nearly thirty years. The various iterations and translations of the poem are not always harmonious and instead force the reader to consider more deeply the themes of the poem and to question the role of translation. I read the poem in light of Beckett's 1934 essay ‘Recent Irish Poetry’ as well as consider it in response to W.B. Yeats' 1899 poem ‘He Wishes His Beloved Were Dead’. By situating the poem in this context, I argue that this poem is a manifestation of Beckett's argument in the essay that poetry must take into account the division between poet and object. His short poem demonstrates this division as well as that between original and translation and thus allows us a window onto his translation project at large. Considering Beckett's poetic translation permits us to consider how a complementarity of intention towards language does not necessarily entail complementary translations.

Chemical Availability of Bromide Dictates CsPbBr3 Nanocrystal Growth

2019 ◽  
Author(s):  
Je-Ruei Wen ◽  
Benjamin Roman ◽  
Freddy Rodriguez Ortiz ◽  
Noel Mireles Villegas ◽  
Nicholas Porcellino ◽  
...  
Keyword(s):  
Reaction Time ◽  
Growth Mechanism ◽  
Chemical Control ◽  
Critical Role ◽  
Phase Evolution ◽  
Detailed Understanding ◽  
Semiconductor Nanocrystal ◽  
Nanocrystal Growth ◽  
Chemical Availability

Lack of detailed understanding of the growth mechanism of CsPbBr3 nanocrystals has hindered sophisticated morphological and chemical control of this important emerging optoelectronic material. Here, we have elucidated the growth mechanism by slowing the reaction kinetics. When 1-bromohexane is used as an alternative halide source, bromide is slowly released into the reaction mixture, extending the reaction time from ~3 seconds to greater than 20 minutes. This enables us to monitor the phase evolution of products over the course of reaction, revealing that CsBr is the initial species formed, followed by Cs4PbBr6, and finally CsPbBr3. Further, formation of monodisperse CsBr nanocrystals is demonstrated in a bromide-deficient and lead-abundant solution. The CsBr can only be transformed into CsPbBr3 nanocubes if additional bromide is added. Our results indicate a fundamentally different growth mechanism for CsPbBr3 in comparison with more established semiconductor nanocrystal systems and reveal the critical role of the chemical availability of bromide for the growth reactions.<br>

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