Effective valence proton and neutron numbers in transitionalA≊150nuclei from B(E2) andg-factor data

1987 ◽  
Vol 36 (2) ◽  
pp. 851-854 ◽  
Author(s):  
A. Wolf ◽  
R. F. Casten
Keyword(s):  
Effective Valence ◽  
Factor Data ◽  
Valence Proton

Effective valence proton numbers for nuclei withZ∼64

2011 ◽  
Vol 84 (3) ◽  
Author(s):  
G. J. Fu ◽  
H. Jiang ◽  
Y. M. Zhao ◽  
A. Arima
Keyword(s):  
Effective Valence ◽  
Valence Proton

scholarly journals The Impact of Geopolitical Risks on Tourism Supply in Developing Economies: The Moderating Role of Social Globalization

2021 ◽  
pp. 004728752110047
Author(s):  
Giray Gozgor ◽  
Marco Chi Keung Lau ◽  
Yan Zeng ◽  
Cheng Yan ◽  
Zhibin Lin
Keyword(s):  
Fixed Effects ◽  
Capital Investment ◽  
Developing Economies ◽  
Sustainable Tourism ◽  
Global Pandemic ◽  
The Media ◽  
Factor Data ◽  
The Impact ◽  
Moderating Role ◽  
Geopolitical Risks

Capital investment is vital for sustainable tourism growth, particularly in times of geopolitical turmoil. This study examines how tourism investment was influenced by geopolitical risks considering social globalization as a moderating factor. Data were collected from 18 developing economies between 1995 and 2018. The results from the fixed effects and the least squares dummy variable–corrected methods show that the geopolitical risks negatively affect capital investment in tourism, with social globalization playing a moderating role in alleviating the adverse effect. The results were robust to different measures and analyses. The study advances our understanding of sustainable tourism growth amid geopolitical turmoil. Policymakers, especially those from developing economies, are suggested to be vigilant about the media atmosphere of geopolitics and enhancing social globalization as a countermeasure against politically turbulent times. The study also provides implications for alleviating the impact of the global pandemic on tourism investment.

scholarly journals MHD squeezed Darcy–Forchheimer nanofluid flow between two h–distance apart horizontal plates

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 1100-1107
Author(s):  
Ghulam Rasool ◽  
Waqar A. Khan ◽  
Sardar Muhammad Bilal ◽  
Ilyas Khan
Keyword(s):  
Heat Flux ◽  
Fluid Flow ◽  
Velocity Field ◽  
Concentration Distribution ◽  
Numerical Data ◽  
Brownian Diffusion ◽  
Nanofluid Flow ◽  
Viscosity Parameter ◽  
Thermal Distribution ◽  
Factor Data

Abstract This research is mainly concerned with the characteristics of magnetohydrodynamics and Darcy–Forchheimer medium in nanofluid flow between two horizontal plates. A uniformly induced magnetic impact is involved at the direction normal to the lower plate. Darcy–Forchheimer medium is considered between the plates that allow the flow along horizontal axis with additional effects of porosity and friction. The features of Brownian diffusive motion and thermophoresis are disclosed. Governing problems are transformed into nonlinear ordinary problems using appropriate transformations. Numerical Runge–Kutta procedure is applied using MATLAB to solve the problems and acquire the data for velocity field, thermal distribution, and concentration distribution. Results have been plotted graphically. The outcomes indicate that higher viscosity results in decline in fluid flow. Thermal profile receives a decline for larger viscosity parameter; however, Brownian diffusion and thermophoresis appeared as enhancing factors for the said profile. Numerical data indicate that heat flux reduces for viscosity parameter. However, enhancement is observed in skin-friction for elevated values of porosity factor. Data of this paper are practically helpful in industrial and engineering applications of nanofluids.

Chemical Bonds Properties and Spontaneous Polarization of Orthogonal SrBi2Ta2O9 Crystals

2016 ◽  
Vol 848 ◽  
pp. 688-695
Author(s):  
Xiao Hong Xiao ◽  
Shi Chun Li
Keyword(s):  
Spontaneous Polarization ◽  
Cluster Structure ◽  
Chemical Bonds ◽  
Local Cluster ◽  
Valence Electron Density ◽  
Effective Valence ◽  
Individual Bond ◽  
Atomic Coordination ◽  
Experimental Values ◽  
The Individual

The bonds structure, atomic coordination situation and local cluster structure in SrBi2Ta2O9 were analyzed by means of the Atomic Environment Calculation (AEC), and then the SrBi2Ta2O9 crystal was decomposed into 20 pseudo-binary crystals with the crystal decomposition method. The chemical bonds properties, such as effective valence electron density and iconicity of the individual bond were calculated by the dielectric chemical bonds theory. And the correlation between chemical bonds properties and spontaneous polarization of the bismuth layered ferroelectrics was established. Finally, the spontaneous polarization in ferroelectric SrBi2Ta2O9 and other relevant ferroelectrics were calculated, which are in good agreement with the experimental values and other theoretical calculated values.

scholarly journals High-Accuracy PVT Relationships for Compressed Fluids and Their Application to BET-like Modelling of CO2 and CH4 Adsorption

2007 ◽  
Vol 25 (8) ◽  
pp. 543-559 ◽  
Author(s):  
Janina Milewska-Duda ◽  
Jan Tadeusz Duda
Keyword(s):  
State Equation ◽  
High Accuracy ◽  
Theoretical Description ◽  
Theoretical Modelling ◽  
Hard Sphere Model ◽  
Cohesion Energy ◽  
Critical Temperatures ◽  
Compression Factor ◽  
Energy Relationships ◽  
Factor Data

This paper presents a set of high-accuracy formulae enabling the evaluation of the compression factor, activity and cohesion energy of fluids at near-critical and super-critical temperatures, with reduced molar volumes ranging from 0.4. Such data are necessary in BET-like theoretical modelling of adsorption process. The proposed fluid state equation (PVT relationship) combines a theoretical description of the fluid entropy (based on a hard-sphere model) with cohesion energy relationships obtained via high-accuracy approximations of universal compression factor data and vapour-liquid equilibria. The resultant relationships are incorporated into a BET-like description of adsorption in materials of irregular microporous structure (LBET model). The set of formulae gathered together in this paper allows the possible effective calculation of adsorption isotherms at near- and super-critical temperatures relative to the pore structures. A multi-variant fitting of the LBET model to the empirical data is proposed to detect active constraints for multilayer adsorption and, hence, to obtain information on the structure of the pores. Application of the formulae to the analysis of methane and carbon dioxide adsorption onto an active carbon is discussed.

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