As a high-power laser is focused on a target, high energy electrons, protons and even positrons are produced. These contribute to the transport of energy from the laser into the matter. Lasers can deposit a large amount of energy in the matter. At pressures exceeding 1 Mbar, the energy density becomes comparable to that of an electron in the hydrogen atom. Quantum effects must be accounted for - a new state of matter is reached.
Prof Gregori research interests cover laboratory astro-particle physics with high power lasers, dense plasmas as found in interior of stars and planets, and inertial confinement fusion ICF energy. He was a post-doctoral researcher from to and then appointed as staff scientist. Gregori Robustness of raman plasma amplifiers and their potential for attosecond pulse generation James D.
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A non-LTE plasma atomic physics, kinetics and lineshape package E. View All Most Downloaded Articles. Calculations of photoionization and radiative recombination in warm dense plasmas by average-atom method M. Overview and opportunities for laboratory astrophysics A.
View All Most Cited Articles. Counter-propagating radiative shock experiments on the Orion laser and the formation of radiative precursors T. Robustness of raman plasma amplifiers and their potential for attosecond pulse generation James D. Investigation of jet formation from the blast wave of a locally heated laser-irradiated target H. Most Cited Articles The most cited articles published since , extracted from Scopus. The Plum Print next to each article shows the relative activity in each of these categories of metrics: Captures, Mentions, Social Media and Citations.
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Go here to learn more about PlumX Metrics. Spatial and temporal plasma evolutions of magnetic reconnection in laser produced plasmas.
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Transition from coherent to incoherent acceleration of nonthermal relativistic electron induced by an intense light pulse. If the State is most often viewed as a target of protest movements, some research If the State is most often viewed as a target of protest movements, some research focuses on how state interventions may contribute not only to the development and success of voluntary groups but also constrain their room to maneuver, pushing them to soften their claims, their identities and their repertoires of action.
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The authors also address a less often explored dimension of the effect of State funding, that is, how, in the case under study, it has contributed to shaping the social and legal forms of same-sex politics and coproduced social norms of contemporary homosexuality. State funding is viewed less as a factor of transformation of movements, in its effects of acting as a brake on or a facilitator of action by mobilized groups, and more in the way it has become involved in a process of coproduction of social norms along with social movements. Are such transitions turning points? Horat, Disclosing homosexuality, disclosing seropositivity.
The purpose of the study was to analyze the different ways of revealing or not HIV-positive status and homosexuality by a sample of Swiss HIV-positive gay and bisexual men. Given that these two aspects of social identity are often Given that these two aspects of social identity are often linked to stigmatization and rejection, three main questions were investigated: For both aspects, for whom is the disclosure meant and in what order are disclosures made?
On what kind of social structures family, affective, professional, etc. How does one manage these two aspects of social identity, according to his own social characteristics? Self-administered questionnaires sent in summer to volunteers and ex-volunteers of eight local groups of the Swiss Aids Federation and seven gay associations. Ayoub , Gallardo Lucille , and Aymon Kreil.
Special Issue Journal Name: Critique internationale Publication Date: Nov Publication Name: Olivier Fillieule, Camille Masclet, We want to explore if the irruption of new We want to explore if the irruption of new ideas put forward by feminist women and homosexuals did provoke a not so silent revolution within the party, generating internal debates around the divide between the politicization of intimacy and sexuality, the unequal division of activist work at all levels, etc.
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The answer is clearly no. First, we explore the process of unveiling of the oppression of women and homosexuals in the party and the effects it had at a meso level on the party organization creation of the National Commission homosexuality - CNH, in , on strategic choices, and even more subtly on inner conflicts and power relations. To do this we use several types of data: These unpublished archives, that were recently opened to us, contain handwritten notes of meetings of the CNH, exchanges of letters, original typescripts.
Second, we explore at a life-course micro level, how the activists involved in the struggle for feminist and homosexual agenda within the party did experience alienation in LCR, hence their subsequent life course. Some elements of an analysis of activists's careers and gender more.
Paper prepared for the third session of the research seminar on "Emerging Issues in Social Sciences: In France, participation in vaccine trials is necessarily a personal act that is not intended to be made public. It does not involve any direct act of solidarity nor does it require any protest or demanding behavior. On the contrary, it On the contrary, it requires unconditional compliance with the research protocols.
The uniqueness of the network facilitates the distribution of volunteers between trials for the varying needs of the protocols while reinforcing a sense of integration intended to maintain their motivation. For this, we thank them warmly. The research consisted of an exploration of 2 connected aspects: In this case, the corpus of initial application letters offers the possibility of comparing one population of applicants with the people who were eventually included in the network and distinguishing those who dropped out or refused to be included.
Les logiques de l'engagement dans les essais vaccinaux ANRS.
Volunteers in preventive HIV vaccine trials. Motivations, determinants and biographical consequences in a longitudinal perspective France, AIDS world conference, , Bangkok more. This is achieved through an analysis of entry and exit flows between and , secondly through a study of the This is achieved through an analysis of entry and exit flows between and , secondly through a study of the structure of the group in terms of socio-biological characteristics and of proximity to AIDS before involvement.
Thirdly the range of motives invoked by the volunteers has been addressed. An analysis of the reasons given by volunteers in order to explain their leaving the organization is the fourth part of that assessment.
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Not only current volunteers were contacted questionnaires, returned, We can study the structure of the group over each year because the questionnaires refer to dates of arrival in the organization and the dates of leaving it. Graph 1 presents the contribution of each generation to the yearly composition of the organization. Graph 2 shows entry and exit for each year as well as stable volunteers, i. Starting in , the number of arrivals has not matched the number of people leaving, leading to a drastic reduction in the total number of volunteers involved.
Although the duration of members' commitment gradually decreased as early as the beginning of , one can demonstrate that the introduction of HAART marked an acceleration of this process.
Olivier Fillieule | University of Lausanne - ramadelavena.tk
Socio-biological characteristics Since the first years, the development of the organization shows quite a dramatic transformation of the membership structure in terms of age, occupation, sex and sexual orientation table 1. The share of the year olds has remained important during the whole history of the organization, and a slow but continued increase of younger membership is to be seen between and White collars workers and middle level executives see their relative share increase over the years.
Volunteers are mostly middle class and lower middle class, with a large proportion of members who work in the public sector. Among middle level executives, members working in the health care and social services sectors make up for a significant share of membership. As a result, homosexual men and heterosexual women are quantitatively the two dominant socio-sexual categories at AIDES.
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Belin, collection "Sociologiquement", , p. Its aim is to Its aim is to evaluate the involvement of militancy at Act Up in a comparative perspective-in time and in multi-organisational space-and to answer the following questions: Methods A self-administered questionnaire was sent to the subscribers of the monthly newsletter published by Act Up-Paris Action and handed out at weekly meetings in By reason of the varying degrees of militant involvement, three categories were set out: All together those categories make the Act Up " mobilization potentials ". An inquiry made in by AIDES on a population of its volunteers helps to outline some comparative lines.
The results presented here constitute the first part of an ongoing research whose goal is to analyse the involvement in Act Up and at AIDES in a longitudinal perspective.
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