Le concept de crise psychotique et son traitement psychanalytique

Les concepts de crise, d'intervention de crise, de centre de crise demeurent imprécis en ce qui concerne les psychoses. L'auteure souligne que, contrairement au champ psychiatrique qui vise la réduction des symptômes, la psychanalyse ne s'attarde pas à la phénoménologie de la psychose mais plutôt à la structure qui la sous-tend. Elle veut montrer, dans cet article, ce que le point de vue psychanalytique peut apporter de nouveau au concept même de crise et proposer un mode d'intervention spécifique à la situation de crise.With regard to psychoses, the notions of crisis, crisis intervention and crisis centres are somewhat ill-defined. The author emphasizes that, contrary to the psychiatric field which aims to reduce symptoms, psychoanalysis does not attempt to examine the phenomenology of a psychosis, but rather focus on the structure that underlies it. The author gees on to show in what way the psychoanalytic viewpoint can help to define the notion of crisis and suggests an intervention method designed specifically for crisis situations

Justice coopérative et gratuité des transports en commun

Cooperative Justice and Free Public Transit - Urban transportation is a central issue for theories of urban justice. The current car culture is unjust because it discriminates against those who cannot afford to be a part of it, and it is inefficient because it creates a collectively disadvantageous situation. In this paper, I will first argue that public policies should encourage a modal transfer from car to public transit. Drawing on a theory of cooperative justice, I will then argue that free public transit is mutually advantageous and can be defended from both the perspectives of equality and efficiency

La petite enfance comme catégorie d’expérience et comme catégorie cognitive

International audienceThis presentation proceeds from the perspective of a reflexive sociology whose task is to bring to light the analytical categories it uses in its daily work ; thus, by introducing a distinction between categories of daily experience of life, administrative categories and cognitive categories. What does this mean with regard to early childhood? Category of knowledge or category of experience connected with the everyday life? Here is a first distinction about which it will be necessary to reflect; and reflect about it within the framework of its universal generalization, at least in western societies. If we follow Prout ( 2005 ), there are 3 main processes of social maturation: early childhood, childhood, adolescence. Conventional outline! For its part, Pasquier (2005) offers a finer outline: infant, toddler, child, preteen, etc.) that subsumes under the "social evolution of ages", which are institutionalized. Moreover, they would run across social classes and give rise to particular forms of socialization according to age groups. We are already in the cognitive. How does it work?Cette présentation se situe dans la perspective d’une sociologie réflexive qui se donne pour tâche de porter au jour les catégories analytiques qu’elle emploie dans son travail quotidien ; et ce, en introduisant une distinction entre catégories d’expérience de la vie quotidienne, catégories administratives et catégories de connaissance (ou cognitives). Qu’est-ce à dire eu égard à la petite enfance ? Catégorie de connaissance ou catégorie d’expérience reliée à la vie quotidienne ? Voilà une première distinction sur laquelle il faudra réfléchir ; et y réfléchir dans le cadre d’une hypothèse quant à sa généralisation universelle, du moins dans les sociétés occidentales. Si on suit Prout (2005), il existe 3 principaux processus de maturation sociale : la petite enfance, l’enfance, l’adolescence. Découpage classique ! De son côté, Pasquier (2005) propose un découpage plus fin : nourrisson, petit enfant, enfant, pré-adolescent, etc.) qu’il subsume sous l’appellation « l’évolution sociale des tranches d’âge », lesquelles sont institutionnalisées. Elles seraient de surcroît transversales entre classes sociales et donnent lieu à des formes particulières de socialisation selon les tranches d’âge. Nous sommes déjà dans le cognitif. Comment opère-t-il

La RSE et l'industrie des gaz de schiste au Québec : l'histoire d'une naissance prématurée

Suite à une importante vague d’opposition contre l’exploration et l’exploitation du gaz de schiste au Québec, un quasi-moratoire sur les nouvelles technologies d’extraction a été promulgué par le gouvernement de la province. Cet article exposera comment l’application des concepts de responsabilité sociale des entreprises (RSE) aurait pu jouer en faveur de l’industrie dans le développement de cette activité peu règlementée au Québec. Dans un premier temps, un portrait de l’évolution du concept de RSE sera dressé. L’accent sera alors mis sur les concepts de consultation, de transparence et de collaboration avec les communautés affectées par une activité d’extraction. Par la suite, un portrait détaillé des événements ayant menés à l’adoption d’un quasi-moratoire dans la province sera dressé afin de comprendre comment l’industrie aurait pu agir autrement afin d’arriver à ses fins avec l’aval de la population et du gouvernement.Following a wave of opposition against the exploration and exploitation of shale gas in Quebec, a quasi-moratorium on new extraction technologies has been promulgated by the provincial government. This article will explain how the application of corporate social responsibility (CSR) concepts could have potentially benefitted the industry in the development of this loosely regulated activity in Quebec. Initially, this article will explore the evolution of CSR. Emphasis will be placed on the concepts of consultation, transparency and collaboration with communities affected by the extraction. Subsequently, a detailed picture of events that led to the adoption of this quasi-moratorium in the province will be to be deployed to better understand how the industry could have acted differently to achieve the same ends, however with the approval of the people and government

Chloroplast DNA sequence of the green alga <it>Oedogonium cardiacum </it>(Chlorophyceae): Unique genome architecture, derived characters shared with the Chaetophorales and novel genes acquired through horizontal transfer

<p>Abstract</p> <p>Background</p> <p>To gain insight into the branching order of the five main lineages currently recognized in the green algal class Chlorophyceae and to expand our understanding of chloroplast genome evolution, we have undertaken the sequencing of chloroplast DNA (cpDNA) from representative taxa. The complete cpDNA sequences previously reported for <it>Chlamydomonas </it>(Chlamydomonadales), <it>Scenedesmus </it>(Sphaeropleales), and <it>Stigeoclonium </it>(Chaetophorales) revealed tremendous variability in their architecture, the retention of only few ancestral gene clusters, and derived clusters shared by <it>Chlamydomonas </it>and <it>Scenedesmus</it>. Unexpectedly, our recent phylogenies inferred from these cpDNAs and the partial sequences of three other chlorophycean cpDNAs disclosed two major clades, one uniting the Chlamydomonadales and Sphaeropleales (CS clade) and the other uniting the Oedogoniales, Chaetophorales and Chaetopeltidales (OCC clade). Although molecular signatures provided strong support for this dichotomy and for the branching of the Oedogoniales as the earliest-diverging lineage of the OCC clade, more data are required to validate these phylogenies. We describe here the complete cpDNA sequence of <it>Oedogonium cardiacum </it>(Oedogoniales).</p> <p>Results</p> <p>Like its three chlorophycean homologues, the 196,547-bp <it>Oedogonium </it>chloroplast genome displays a distinctive architecture. This genome is one of the most compact among photosynthetic chlorophytes. It has an atypical quadripartite structure, is intron-rich (17 group I and 4 group II introns), and displays 99 different conserved genes and four long open reading frames (ORFs), three of which are clustered in the spacious inverted repeat of 35,493 bp. Intriguingly, two of these ORFs (<it>int </it>and <it>dpoB</it>) revealed high similarities to genes not usually found in cpDNA. At the gene content and gene order levels, the <it>Oedogonium </it>genome most closely resembles its <it>Stigeoclonium </it>counterpart. Characters shared by these chlorophyceans but missing in members of the CS clade include the retention of <it>psaM</it>, <it>rpl32 </it>and <it>trnL</it>(caa), the loss of <it>petA</it>, the disruption of three ancestral clusters and the presence of five derived gene clusters.</p> <p>Conclusion</p> <p>The <it>Oedogonium </it>chloroplast genome disclosed additional characters that bolster the evidence for a close alliance between the Oedogoniales and Chaetophorales. Our unprecedented finding of <it>int </it>and <it>dpoB </it>in this cpDNA provides a clear example that novel genes were acquired by the chloroplast genome through horizontal transfers, possibly from a mitochondrial genome donor.</p

L’intégration d’un traitement psychologique en réadaptation cardiaque à l’Hôpital Montfort : une diminution des risques associés aux maladies cardiaques

Les buts de cette étude étaient l’intégration et la mise à l’épreuve d’un traitement psychologique au sein du Service de réadaptation cardiaque à l’Hôpital Montfort. Des patients (hommes et femmes), âgés entre 35 et 85 ans, avec une maladie cardiaque et qui se plaignaient de symptômes d’anxiété et de dépression ont participé à cette étude. Les résultats suggèrent que la thérapie cognitivo-comportementale (TCC) peut réduire de façon significative les symptômes de dépression et d’anxiété chez les patients cardiaques. Dans notre échantillon (N = 11), les patients ayant suivi au moins dix séances de traitement ont présenté une diminution importante de leurs symptômes, et personne ne répondait aux critères d’un diagnostic de dépression ou d’anxiété après l’intervention.The goals of the study were to introduce and test a psychological treatment at the Montfort Hospital’s Cardiac Rehabilitation Service. The participants were male and female patients between the ages of 35 and 85 with heart disease who reported symptoms of anxiety and depression. The results suggest that cognitive-behavioural therapy (CBT) may significantly reduce symptoms of depression and anxiety in cardiac patients. In our sample (N = 11), patients completing at least 10 treatment sessions showed a significant decrease in their symptoms, and none met the criteria for a diagnosis of depression or anxiety after the treatment

Saisonnalité du transport de carbone organique dissous dans le ruisseau de l'Hermine, un bassin versant de tête de réseau du Bouclier Canadien

Nous avons étudié la variabilité saisonnière de la relation entre les fluctuations des concentrations en carbone organique dissous (COD) dans le ruisseau de l'Hermine (Québec, Canada) et les changements du débit (Q). Un total de 93 événements hydrologiques échantillonnés de 1994 à 2003 et regroupés sur une base saisonnière (hiver-printemps, été, automne) a été analysé. Le modèle de régression linéaire est utilisé afin de déterminer, pour chaque événement, la pente de la relation entre la concentration en COD dans le ruisseau et le débit. Ces pentes sont regroupées par saison et selon un seuil arbitraire de un qui permet de contraster les conditions hydrologiques et climatiques initiales des événements répertoriés. Les résultats du test de Kruskal-Wallis, visant la comparaison entre les événements de pentes supérieures et inférieures à un, montrent clairement la saisonnalité de la relation entre le COD et le débit. La saisonnalité de la relation COD/Q est ensuite mise en relation avec des variables climatiques et hydrologiques susceptibles de conditionner le transport du COD dans le bassin de l'Hermine. Les résultats montrent que les changements saisonniers des conditions climatiques et hydrologiques dans le bassin versant ont un impact significatif sur la relation entre le COD et le débit. Ainsi, le volume de précipitation tombé durant l'événement, la température moyenne de l'air et la température du sol régissent significativement (p =0,041; 0,001 et 0,009 respectivement) le transport du COD pour la période hiver-printemps. Les basses températures du sol et l'apport élevé en eau via les précipitations et la fonte favorisent le lessivage intense du COD soluble déjà limité par les basses températures. Au cours de l'été, l'état initial d'humidité du bassin est le principal facteur contrôlant l'évolution des concentrations de COD lors d'une crue; les fortes relations avec le pourcentage d'humidité des sols et le débit total 24 h avant l'événement le prouvent (p =0,039 et 0,0003 respectivement). Les changements les plus prononcés du COD surviennent, au cours de l'été, suite à une période prolongée de sécheresse. À l'automne, le transport du COD est influencé par le volume de précipitation tombé durant l'événement (p =0,031) et la température du sol (p =0,042). La modélisation de la relation COD/Q par les variables hydro-climatiques montre que 40% de la relation COD/Q s'explique par la température du sol durant la période d'hiver-printemps. Durant l'été, les conditions initiales d'humidité du bassin, traduites par le débit 24 h avant l'événement, expliquent à 51% la relation COD/Q. À l'automne, la relation COD/Q est gouvernée à 50% à la fois par le volume de précipitation tombé durant l'événement et la température du sol. L'analyse de ces données établit clairement la saisonnalité de la relation COD/Q et que des variables climatiques et hydrologiques permettent de quantifier ces fluctuations saisonnières.The terrestrial organic carbon (C) pool, estimated to 1.5 x 1015 kg C for the first meter of soil (Amundson, 2001), represents a major terrestrial elemental stock for which the recycling rate and the response to perturbations are still unknown. Under the present changing climatic conditions, C fluxes in terrestrial ecosystems could be significantly disturbed during the next decades. Indeed, the multi-annual changes in temperature and precipitation are likely to have a major impact on the net primary production and on organic matter decomposition in soils. This situation influences the production of the dissolved organic carbon (DOC) in soils, its transport to surface waters and hence, water quality. In this context, a better knowledge of the climatic and hydrologic factors influencing seasonal variations in DOC export is crucial to improve our understanding of the potential transformation of carbon stocks and fluxes in terrestrial ecosystems.The objectives of the present study were 1) to evaluate the seasonality in the relationship between dissolved organic carbon (DOC) concentrations in the stream and streamflow (Q) and 2) to quantify the impact of seasonal changes in climatic and hydrological conditions in the watershed on the DOC/Q relationship.The Hermine catchment is located about 80 km north of Montréal, Québec, Canada. An intermittent first-order stream drains the 5.1 ha catchment. Soils are Orthic and Gleyed Humo-Ferric and Ferro-Humic Podzols. The stream water was sampled daily, from 1994 to 2003, with an automatic sampler. The stream discharge was calculated from the water level above a 90º V-notch weir using a Global level sensor bubbler. Soil organic C content was analysed by the modified Walkley-Black method. Because of the high cost of DOC analysis for numerous samples, the DOC content was estimated by the relationship obtained between eight stream water samples analysed with a Shimadzu TOC analyser (Shimadzu, Kyoto, Japan) and the corresponding absorbance measured at 254 nm. From the initial year of the project, 1994, the regression used was Y=-0.05 + 32.60 X with an r2 value of 0.58 and a precision of 0.05 mg·L-1.The relationship between the DOC concentration and Q at the Hermine was positive and significant (p < 0.01) when all data were considered (n=1960). Because of the weakness of this relation (r2 =0.12), the stream samples, from 1994 to 2003, were seasonally split into 93 distinct hydrological events: 33 for winter-spring, 34 for summer and 26 for fall. A linear regression model was used to determine, for each event, the slope of the relationship between the DOC concentrations in the stream and Q. To contrast the antecedent conditions of the Hermine watershed, the events from a given season were divided into two groups. The Kruskal-Wallis test was then used to establish the link between the slope of the DOC/Q relationships on the one hand, and the environmental watershed conditions on the other hand: the climatic variables (volume of precipitation during event, mean air and soil temperatures) and the hydrological variables (stream discharge 24 h before the event, soil moisture, and ground water level).The DOC concentrations in the stream varied on an annual, a seasonal and an event basis. For the period 1994 to 2003, the annual mean concentrations, calculated from daily samples, varied from 2.0 to 2.5 mg DOC·L-1. On a seasonal basis, mean daily DOC was higher during the summer and the fall (2.9 and 2.8 mg DOC·L-1 respectively), and lower in the winter-spring (2.1 mg DOC·L-1). The relation between DOC concentrations and Q fluctuated as a function of the seasonal evolution of climatic and hydrological conditions in the Hermine catchment. For winter-spring events, 79% of the events had a DOC/Q slope lower than one. This period was characterised by high streamflow levels and high total DOC fluxes even though the daily mean DOC concentrations were low (2.1 mg DOC·L-1). The volume of precipitation during the event (p =0.041), the mean air temperature (p =0.001) and the soil temperature (p =0.009) were significantly related to the difference between events with slopes lower and higher than one. Indeed the slope of the relation increases when soil temperatures are elevated. When the temperatures are higher, DOC export increases and subsurface flow in soil horizon is enriched in DOC. Under colder temperature, the DOC production is limited and the soluble organic substances stored in soils are leached out the catchment with the high volume of precipitation and with the water coming from the snowmelt. For the summer period, there were 20 events with slopes greater than one against 14 with slopes lower than one. The soil humidity (p =0.039) and the total streamflow 24 h before the event (p=0.0003), were the two variables that significantly distinguished both slope groups. Rapid changes in DOC concentration occur during hydrological events following a long drought period. Under dry conditions, the subsurface flow in soil horizons rich in organic matter, the re-hydration of bed sediments and the hydrophobic behaviour of soil particles can all contribute to the export of very high DOC concentrations, even during small events. The relationships between DOC and Q, for the fall season, were significantly influenced by the volume of precipitation during the event (p =0.031) and the mean soil temperature (p =0.042). The events with the lower slopes showed the highest volume of precipitation during event and the lowest soil temperature. For these events occurring under wet conditions, the water originates essentially from the B and C horizons, and DOC fluctuations are then limited because of the low concentrations of the DOC in these horizons (anionic sorption of soluble organic substances by iron oxides).Best-fit from multiple regressions indicated that 40% of the link between DOC and Q was explained by the soil temperature during the winter-spring period (p =0.0001). For summer, the streamflow 24 h before events accounted for 51% of the variation in DOC/Q relationships (p =0.00001). For the fall period, the volume of precipitation during event and the soil temperature both contributed equally to the DOC/Q relationships (p =0.001). From these results, obtained from a multi-year project, it is clear that the relation between DOC and Q is a function of the variability in the climatic and hydrological watershed conditions. In a context of global warming, it is possible that warmer air temperatures have an effect on soil temperature. Thus, during winter-spring and fall periods, the duration and the intensity of the DOC production in soils will increase and the export of DOC from the watershed to other surface water system could become more important under equivalent or higher streamflow. Higher air temperature also means higher evapotranspiration by the forest during the summer period, and consequently dryer watershed conditions. A low streamflow and a low soil humidity level could be expected and then, brief rain events will sporadically flush the soluble organic carbon accumulated in the soil. The DOC export would be insignificant for that period, but the DOC would reach the highest annual level. The new knowledge on the DOC/Q relationships, at the hydrological event scale, will be added to the accumulated data on the possible effects of global warming on the carbon cycle in forested ecosystems

Phylogeny of Prokaryotes and Chloroplasts Revealed by a Simple Composition Approach on All Protein Sequences from Complete Genomes Without Sequence Alignment

The complete genomes of living organisms have provided much information on their phylogenetic relationships. Similarly, the complete genomes of chloroplasts have helped to resolve the evolution of this organelle in photosynthetic eukaryotes. In this paper we propose an alternative method of phylogenetic analysis using compositional statistics for all protein sequences from complete genomes. This new method is conceptually simpler than and computationally as fast as the one proposed by Qi et al. (2004b) and Chu et al. (2004). The same data sets used in Qi et al. (2004b) and Chu et al. (2004) are analyzed using the new method. Our distance-based phylogenic tree of the 109 prokaryotes and eukaryotes agrees with the biologists tree of life based on 16S rRNA comparison in a predominant majority of basic branching and most lower taxa. Our phylogenetic analysis also shows that the chloroplast genomes are separated to two major clades corresponding to chlorophytes s.l. and rhodophytes s.l. The interrelationships among the chloroplasts are largely in agreement with the current understanding on chloroplast evolution