95/00162 Role of overpressures and in situ stresses in fault-controlled hydrocarbon migration: A case study

1995 ◽  
Vol 36 (1) ◽  
pp. 10
Keyword(s):  
Hydrocarbon Migration ◽  
In Situ Stresses

scholarly journals Stoichiometry and disorder influence over electronic structure in nanostructured VOx films

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
A. D’Elia ◽  
S. J. Rezvani ◽  
N. Zema ◽  
F. Zuccaro ◽  
M. Fanetti ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Distorted Octahedral Geometry ◽  
Edge Structure ◽  
Distorted Octahedral ◽  
X Ray Absorption ◽  
Complex Matter ◽  
Nanometric Size

AbstractWe present and discuss the role of nanoparticles size and stoichiometry over the local atomic environment of nanostructured VOx films. The samples have been characterized in situ using X-ray absorption near-edge structure (XANES) spectroscopy identifying the stoichiometry-dependent fingerprints of disordered atomic arrangement. In vanadium oxides, the ligand atoms arrange according to a distorted octahedral geometry depending on the oxidation state, e.g. trigonal distortion in V2O3 and tetragonal distortion in bulk VO2. We demonstrate, taking VO2 as a case study, that as a consequence of the nanometric size of the nanoparticles, the original ligands symmetry of the bulk is broken resulting in the coexistence of a continuum of distorted atomic conformations. The resulting modulation of the electronic structure of the nanostructured VOx as a function of the oxygen content reveals a stoichiometry-dependent increase of disorder in the ligands matrix. This work shows the possibility to produce VOx nanostructured films accessing new disordered phases and provides a unique tool to investigate the complex matter.

Facilitating Sports and University Study: The Case of a Dual Career Development Environment in Sweden

2020 ◽  
Vol 4 (1) ◽  
pp. 95-107
Author(s):  
Lukas Linnér ◽  
Natalia Stambulova ◽  
Louise Kamuk Storm ◽  
Andreas Kuettel ◽  
Kristoffer Henriksen
Keyword(s):  
Career Development ◽  
Dual Career ◽  
Development Environment ◽  
Career Support ◽  
Whole Person ◽  
Support Team ◽  
Performance Development

This case study of a dual career development environment (DCDE) was informed by the holistic ecological approach (HEA) and aimed at (a) providing a holistic description of a DCDE at university level in Sweden and (b) investigating the perceived factors influencing the environment’s effectiveness in facilitating the development of student-athletes. The authors blended in situ observations, interviews, and document analysis to explore the case, and HEA-informed working models were transformed into empirical models summarizing the case. Findings show a well-coordinated DCDE with the key role of coaches in daily dual career support and how efforts were integrated through a dual career-support team sharing a philosophy of facilitating healthy performance development and life balance, with a whole-person and empowerment approach. This study adds to the literature by identifying features of a successful DCDE, and insights from the case can be useful for practitioners in their quest to optimize their DCDEs and support.

Age-Segregated and Gated Retirement Communities in the Third Age: The Differential Contribution of Place — Community to Self-Actualization

2002 ◽  
Vol 29 (3) ◽  
pp. 371-396 ◽  
Author(s):  
Ivan J Townshend
Keyword(s):  
The Elderly ◽  
Retirement Communities ◽  
Community Structures ◽  
Indicator Variables ◽  
Residential Context ◽  
Self Actualization ◽  
Potential Contributor

The author focuses on the role of place-based community both in in-situ aging and in age-segregated (often gated and walled) retirement villages within cities as a potential contributor towards self-actualization. Elderly individuals in a case study in Calgary, Alberta, were measured on the short index of self actualization and a series of multivariate ‘structures’ of place — community associated with behavioral, cognitive, and affective features of community derived from a principal components analysis of community indicator variables. Self-actualization tendencies were not found to differ by residential context. Multiple regression models showed a similar overall contribution of all community structures to self-actualization in the different residential contexts, but different sets of community structures were identified as unique and significant predictors of self-actualization in the two residential settings. This differential impact may signal that a variety of forms and structures of person–environment congruence amongst the elderly yield similar psychological outcomes.

scholarly journals Finite Element Modelling of Coupled Fluid-Flow and Geomechanical Aspects for the Sustainable Exploitation of Reservoirs: The Case Study of the Cavone Reservoir

Geosciences ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 213
Author(s):  
Elena Benvenuti ◽  
Giulia Maurillo
Keyword(s):  
Finite Element ◽  
Fluid Flow ◽  
Computational Models ◽  
In Situ Stress ◽  
Stress Fields ◽  
Flow Equations ◽  
Coupled Problem ◽  
In Situ Stresses

The study of the seismogenic mechanical effects induced by oil & gas activities is a socially impacting issue of environmental engineering as well as a challenging task in computational geomechanics. It requires the solution of a coupled problem governed by poroelastic and fluid flow equations in a faulted domain in the presence of in situ stress fields. As a viable alternative to state-of-the-art academical computational models, the present study contributes a simplified methodology based on a commercial Finite Element multiphysics software. The focus is on the evaluation of the link between the oil & gas activities of the Cavone oilfield reservoir, located in North Italy and adjacent to the Mirandola fault, and the recent seismic sequence that struck Emilia in May 2012. An operational coupled fluid-geomechanical procedure is developed where the Cavone reservoir is subjected to the typical in situ stresses, and the nearby Mirandola fault is modelled as an impervious thin layer.

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