scholarly journals A review of the synthesis of single-crystal 1D perovskite nanostructures by the hydrothermal method

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
O. Kovalenko ◽  
A. Ragulya
Keyword(s):  
Treatment Mode ◽  
One Dimensional ◽  
Structure And Morphology ◽  
Physicochemical Processes ◽  
Synthesis Parameters ◽  
Heat Treatment Mode ◽  
The One ◽  
To Receive ◽  
New Phase ◽  
Ferroelectric Perovskite

Recently, the one-dimensional ferroelectric perovskite nanostructures have been of high interest due to a number of unique properties that allow the improvement of the current ceramic nanotechnologies. In order to receive the nanoparticles of a given structure and morphology it is quite important to expand and summary the knowledge regarding the physicochemical processes of the formation and growth of a new phase. Therefore, in this paper, based on the existing works, an attempt to describe the influence of the crystallization mechanism as well as hydrothermal synthesis parameters (such as the reagent nature, pH, concentration, surfactant, heat treatment mode) on the peculiarities of the anisotropic growth and the formation of the one-dimensional perovskite nanostructures was carried out.

Comparison Between ODT and DNS for Ignition Occurrence in Turbulent Premixed Jet Combustion: Safety-Relevant Applications

2017 ◽  
Vol 231 (10) ◽  
pp. 1709-1735 ◽  
Author(s):  
Abouelmagd Abdelsamie ◽  
David O. Lignell ◽  
Dominique Thévenin
Keyword(s):  
Turbulent Flows ◽  
Reference Data ◽  
Computational Time ◽  
Gas Mixture ◽  
One Dimensional ◽  
Physicochemical Processes ◽  
Numerical Tool ◽  
The One ◽  
Very High ◽  
Turbulent Premixed

Abstract This work investigates the ability of the one-dimensional turbulence model (ODT) to detect, in a predictive manner, occurrence of successful ignition or misfire in a reacting gas mixture subjected to turbulence. Since ODT is computationally very efficient, this significantly aids in the analysis of safety-relevant applications. ODT delivers fast predictions, while still capturing most relevant physicochemical processes controlling ignition. However, ODT contains some empirical parameters that must be set by comparison with reliable reference data. In order to determine these parameters and check the accuracy of resulting ODT predictions, they are compared in this work with reference data from direct numerical simulation (DNS). DNS is recognized as the most accurate numerical tool to investigate ignition in turbulent flows. However, it requires very high computational times, so that it cannot be used for practical safety predictions. It is demonstrated in this article that, thanks to validation and comparison with DNS, ODT realizations can be used to predict correctly the occurrence of ignition in turbulent premixed flames while saving more than 90% of the required computational time, memory and disk space.

Assignment of the deoxyribofuranoside protons in DNA oligomers by the application of relayed coherence transfer two-dimensional nuclear magnetic resonance spectroscopy

1985 ◽  
Vol 63 (11) ◽  
pp. 3133-3139 ◽  
Author(s):  
Donald W. Hughes ◽  
Russell A. Bell ◽  
Thomas Neilson ◽  
Alex D. Bain
Keyword(s):  
Cross Sections ◽  
Chemical Shifts ◽  
Resonance Spectroscopy ◽  
Coherence Transfer ◽  
Dna Oligomers ◽  
One Dimensional ◽  
Phase Cycling ◽  
The One ◽  
P Type ◽  
New Phase

Assignment of the deoxyribofuranose protons in short DNA oligomers by techniques such as homonuclear shift-correlated (COSY) 2-D nmr becomes difficult when there are overlapping diagonal signals. To solve this problem we have applied the method of relayed coherence transfer 2-D nmr to generate cross-peaks between protons such as 1′ and 3′, 3′ and 5′ and 5″ which are not coupled but belong to the same spin system. Plotting cross-sections through the diagonal peaks of the 3′ protons produced completely resolved spectra of the deoxyribofuranoside protons for each nucleotide. Chemical shifts were assigned by comparing each cross-section with the one-dimensional spectrum. A new phase-cycling procedure for the transmitter and receiver was determined and allowed data acquisition with suppression of p-type peaks. This technique is illustrated by the spectra of deoxycytidine and the deoxytriribonucleotide, dCpTpGp.

scholarly journals Obtention of a new phase of the one-dimensional compound TaS3 : X-Ray characterization and electrical measurements

1979 ◽  
Vol 40 (7) ◽  
pp. 157-159 ◽  
Author(s):  
A. Meerschaut ◽  
J. Rouxel ◽  
P. Haen ◽  
P. Monceau ◽  
M. Núñez-Regueiro
Keyword(s):  
Electrical Measurements ◽  
One Dimensional ◽  
X Ray ◽  
The One ◽  
New Phase

Exploring the Multidimensional Facets of Authoritarianism: Authoritarian Aggression and Social Dominance Orientation

2008 ◽  
Vol 67 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Stefano Passini
Keyword(s):  
Social Dominance ◽  
Factor Model ◽  
Three Dimensional ◽  
Social Dominance Orientation ◽  
Model Fit ◽  
Regression Analyses ◽  
One Dimensional ◽  
Confirmatory Factor ◽  
The One ◽  
Better Than

The relation between authoritarianism and social dominance orientation was analyzed, with authoritarianism measured using a three-dimensional scale. The implicit multidimensional structure (authoritarian submission, conventionalism, authoritarian aggression) of Altemeyer’s (1981, 1988) conceptualization of authoritarianism is inconsistent with its one-dimensional methodological operationalization. The dimensionality of authoritarianism was investigated using confirmatory factor analysis in a sample of 713 university students. As hypothesized, the three-factor model fit the data significantly better than the one-factor model. Regression analyses revealed that only authoritarian aggression was related to social dominance orientation. That is, only intolerance of deviance was related to high social dominance, whereas submissiveness was not.

Global Economic Crisis of 2008-2009: Sources and Roots

2009 ◽  
pp. 18-31
Author(s):  
G. Rapoport ◽  
A. Guerts
Keyword(s):  
Oil And Gas ◽  
Trade Deficit ◽  
Developed Countries ◽  
The Other ◽  
Energy Resources ◽  
Market Mechanisms ◽  
Production Output ◽  
The One ◽  
To Receive ◽  
Partial Destruction

In the article the global crisis of 2008-2009 is considered as superposition of a few regional crises that occurred simultaneously but for different reasons. However, they have something in common: developed countries tend to maintain a strong level of social security without increasing the real production output. On the one hand, this policy has resulted in trade deficit and partial destruction of market mechanisms. On the other hand, it has clashed with the desire of several oil and gas exporting countries to receive an exclusive price for their energy resources.

Adiabatic large polarons in anisotropic molecular crystals

2011 ◽  
Vol 35 (1) ◽  
pp. 15-27
Author(s):  
Zoran Ivić ◽  
Željko Pržulj
Keyword(s):  
Energy Transfer ◽  
Effective Mass ◽  
Molecular Crystals ◽  
Single Chain ◽  
Proper Understanding ◽  
One Dimensional ◽  
Interchain Coupling ◽  
Large Polaron ◽  
The One

Adiabatic large polarons in anisotropic molecular crystals We study the large polaron whose motion is confined to a single chain in a system composed of the collection of parallel molecular chains embedded in threedimensional lattice. It is found that the interchain coupling has a significant impact on the large polaron characteristics. In particular, its radius is quite larger while its effective mass is considerably lighter than that estimated within the one-dimensional models. We believe that our findings should be taken into account for the proper understanding of the possible role of large polarons in the charge and energy transfer in quasi-one-dimensional substances.

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