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Search Results: 1 - 10 of 150795 matches for " H. Etienne Alagnidé "
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Morpho-Physical and Psycho-Social Determinants of Low Back Pain in Midwives Population in Benin  [PDF]
H. Etienne Alagnidé, Natta D. Didier Niama, Herman Azanmasso, M. Germain Houngbedji, E. Eric Dossa, G. Toussaint Kpadonou
Open Journal of Therapy and Rehabilitation (OJTR) , 2017, DOI: 10.4236/ojtr.2017.54010
Abstract: Background: Low back pain is a real public health problem. Lots of studies have been done about it, but not in midwives group. The latter seem to be exposed to low back pain due to morphological, physical and psycho-social factors. We therefore study the place of these factors in the occurrence of low back pain in midwives. Method: Prospective, cross-sectional and analytical study, it is done with 102 midwives of university hospitals in Benin. They were interviewed and examined. An eventual link with their history of low back pain, for at least 3 months during the last 12 months before the study, was checked to their morphological aspects (spinal curvatures, BMI), physical examinations data (strength and muscular flexibility) and psycho-social factors (relationship with colleagues and either, stress, ...). The effect of these factors was assessed using relative risk (RR) with a 95% confidence interval. Results: Different morpho-physical and psychosocial disturbances were observed in midwives. 81% had a history of low back pain. The latter have a statistically significant relationship with the different factors studied. These were mostly exposure factors, but poor midwife relationship with their hierarchical superiors was a protective factor (RR = 0.69 and p = 0.0106). Discussion-Conclusion: In Benin, health workers and especially midwives are very exposed to low back pain. The latter are often associated with different morphological, physical and psycho-social disturbances. The knowledge of those parameters is interesting to reduce this high prevalence of low back pain in midwives.
Usefulness of vitrectomy in the treatment of ocular toxoplasmosis
Etienne H. Bovey
International Journal of Medical Sciences , 2009,
What does the “arrow of time” stand for?  [PDF]
Etienne Klein
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.23033
Abstract: One hundred and thirty years after the work of Ludwig Boltzmann on the interpretation of the irreversibility of physical phenomena, and one century after Einstein's formulation of Special Relativity, we are still not sure what we mean when we talk of “time” or “arrow of time”. We shall try to show that one source of this difficulty is our tendency to confuse, at least verbally, time and becoming, i.e. the course of time and the arrow of time, two concepts that the formalisms of modern physics are careful to distinguish. The course of time is represented by a time line that leads us to define time as the producer of duration. It is customary to place on this time line a small arrow that, ironically, must not be confused with the “arrow of time”. This small arrow is only there to indicate that the course of time is oriented, has a well-defined direction, even if this direction is arbitrary. The arrow of time, on the other hand, indicates the possibility for physical systems to experience, over the course of time, changes or transforma-tions that prevent them from returning to their initial state forever. Contrary to what the ex-pression “arrow of time” suggests, it is there-fore not a property of time itself but a property of certain physical phenomena whose dynamic is irreversible. By its very definition, the arrow of time presupposes the existence of a well- established course of time within which – in addition – certain phenomena have their own temporal orientation. We think that it is worth-while to emphasize the difference between sev-eral issues traditionally subsumed under the label “the problem of the direction of time”. If the expressions “course of time”, “direction of time” and “arrow of time” were better defined, systematically distinguished from one another and always used in their strictest sense, the debate about time, irreversibility and becoming in physics would become clearer.
An Analysis of the Determinants of Arbitrage Spread  [PDF]
Etienne Redor
Theoretical Economics Letters (TEL) , 2019, DOI: 10.4236/tel.2019.93034
Abstract: This study examines the determinants of arbitrage spread of S&P 500 firms between 2004 and 2014. We find that bid hostility, the relative size of the target compared to the potential bidder and the acquisition premium paid by the bidding firm are associated with greater arbitrage spread while the proportion of cash in the offer and target termination fees are associated with smaller arbitrage spread.
Mineral Balance Plasticity of Cloudberry (Rubus chamaemorus) in Quebec-Labrador Bogs  [PDF]
Léon Etienne Parent, Serge-étienne Parent, Valérie Hébert-Gentile, Kristine Naess, Line Lapointe
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.47183

The ionome, or plant elemental signature, is the elemental composition of an organisms, that may vary with genotypic traits and phenotypic plasticity. Cloudberry (Rubus chamaemorus L.) is a circumboreal wild berry naturally growing in oligotrophic oceanic bogs ofQuebecandLabrador. Our objective was to relate cloudberry stand productivity to the ionomes of female ramets and explore the cause of nutrient imbalance in low-performing stands. We analyzed 13 elements in female ramets collected in 86 natural sites where crop productivity varied widely. We computed orthogonally arranged balances reflecting plant stoichiometric rules and soil biogeochemistry. Balances were expressed as isometric log ratios (ilr) between ad hoc sub-compositions. Balances were synthesized into a Mahalanobis distance optimized based on receiving operating characteristics (ROC). The critical Mahalanobis distance was found to be 5.29 for cutoff berry yield of3.8 g.m-2 with test performance of 0.88, as measured by the area under the ROC curve. Although past research on cloudberry focused mainly on the N/P ratio, this exploratory mineral balance analysis indicated that imbalance in the [P,N | S,C] and [Al | Nutrients] partitions appeared to be the factors limiting the most cloudberry productivity

Parents Who Have Lost a Child to Cancer: What Do They Really Need?  [PDF]
Cécile Flahault, Etienne Seigneur, Valérie Laurence, Hélène Pacquement, Sébastien Montel
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.66064
Abstract: In a sample of parents who lost a child to cancer, we investigated their needs before and after their child’s death and how these needs were fulfilled. We met parents of AYA (adolescents and young adults) between 15 and 25 years old, who died in Curie Institute between 2000 and 2003. Twenty-one families agreed to participate in this study between October 2005 and April 2006. When a family agreed to participate, a semi-structured interview was held in the psycho-oncology unit of the Curie Institute. This interview was audiotaped and then retranscribed for analysis. Data were subjected to the Grounded theory method, a systematic and standardized method of semantic data analysis. Three prominent themes emerged from our thematic data analysis: first, the importance of psychological care during the terminal phase of the child’s disease and after the child’s death, reported by 95% of parents; second, the need to be listened to and to be understood by the medical team (97% of parents); third, the need for information from the medical team. A big discrepancy was observed between psychological support expectations and the proportion of parents who actually consulted or participated in bereavement groups. Our study clearly demonstrates that parents who lose a child through cancer have particular needs and therefore deserve special attention.
The Double Pedigree: A Method for Studying Culturally and Genetically Inherited Behavior in Tandem
Etienne Danchin, Benoit Pujol, Richard H. Wagner
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0061254
Abstract: Transgenerational sources of biological variation have been at the center of evolutionary studies ever since Darwin and Wallace identified natural selection. This is because evolution can only operate on traits whose variation is transmitted, i.e. traits that are heritable. The discovery of genetic inheritance has led to a semantic shift, resulting in the tendency to consider that only genes are inherited across generations. Today, however, concepts of heredity are being broadened again to integrate the accruing evidence of non-genetic inheritance, and many evolutionary biologists are calling for the inclusion of non-genetic inheritance into an inclusive evolutionary synthesis. Here, we focus on social heredity and its role in the inheritance of behavioral traits. We discuss quantitative genetics methods that might allow us to disentangle genetic and non-genetic transmission in natural populations with known pedigrees. We then propose an experimental design based on cross-fostering among animal cultures, environments and families that has the potential to partition inherited phenotypic variation into socially (i.e. culturally) and genetically inherited components. This approach builds towards a new conceptual framework based on the use of an extended version of the animal model of quantitative genetics to integrate genetic and cultural components of behavioral inheritance.
Designed Diamond Ground State via Optimized Isotropic Monotonic Pair Potentials
Etienne Marcotte,Frank H. Stillinger,Salvatore Torquato
Physics , 2012, DOI: 10.1063/1.4790634
Abstract: We apply inverse statistical-mechanical methods to find a simple family of optimized isotropic, monotonic pair potentials, under certain constraints, whose ground states for a wide range of pressures is the diamond crystal. These constraints include desirable phonon spectra and the widest possible pressure range for stability. We also ascertain the ground-state phase diagram for a specific optimized potential to show that other crystal structures arise for other pressures. Cooling disordered configurations interacting with our optimized potential to absolute zero frequently leads to the desired diamond crystal ground state, revealing that the capture basin for the global energy minimum is large and broad relative to the local energy minima basins.
Optimized Monotonic Convex Pair Potentials Stabilize Low-Coordinated Crystals
Etienne Marcotte,Frank H. Stillinger,Salvatore Torquato
Physics , 2010,
Abstract: We have previously used inverse statistical-mechanical methods to optimize isotropic pair interactions with multiple extrema to yield low-coordinated crystal classical ground states (e.g., honeycomb and diamond structures) in d-dimensional Euclidean space R^d. Here we demonstrate the counterintuitive result that no extrema are required to produce such low-coordinated classical ground states. Specifically, we show that monotonic convex pair potentials can be optimized to yield classical ground states that are the square and honeycomb crystals in R^2 over a non-zero number density range. Such interactions may be feasible to achieve experimentally using colloids and polymers.
Evolution of Lateritic Soils Geotechnical Parameters during a Multi-Cyclic OPM Compaction and Correlation with Road Traffic  [PDF]
Meissa FALL, Dethie Sarr, Makhaly Ba, Etienne Berbinau, Jean-Louis Borel, Mapathe Ndiaye, Cheikh H. Kane
Geomaterials (GM) , 2011, DOI: 10.4236/gm.2011.13010
Abstract: Gravel lateritic soils are intensively used in road geotechnical engineering. This material is largely representative of engineering soil all around the tropical African Countries [1,2]. Gravel lateritic soils from parts of Burkina Faso and Senegal (West Africa) are used to determine the evolution of the geotechnical parameters from one to ten cycles of modified Proctor compaction. This test procedure is non-common for geotechnical purposes and it was found suitable and finally adopted to describe how these problematic soils behave when submitted to a multi-cyclic set of Modified Proctor compactions (OPM) [3,4]. On another hand, we propose a correlation between the traffic and the cycles of compaction considered as the repeated load. From that, this work shows the generation of active fine particles, the decrease of the CBR index and also the mechanical characteristics (mainly the Young Modulus, E) that contribute at least to the main deformation of the road structure.
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