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Charge virale des papillomavirus et transmission entre partenairesComète, Emilie 08 1900 (has links)
L’histoire naturelle et la progression des infections au VPH (virus du papillome humain) sont bien décrites. Cependant, la dynamique de transmission reste faiblement documentée. Une meilleure compréhension de la dynamique de transmission ainsi que de ses facteurs de risque permettrait d’optimiser les stratégies de prévention afin de réduire la prévalence de ces infections dans la population par la vaccination et les méthodes contraceptives. Notre étude vise à déterminer si la charge virale des infections au VPH influence leur transmission entre les partenaires sexuels. Pour ce faire, l’association entre la charge virale au niveau des organes génitaux et la concordance spécifique de type des infections prévalentes au VPH a été évaluée pour 250 couples hétérosexuels récemment formés. Les charges virales de VPH16 (r = 0.30), de VPH18 (r = 0.50) et de VPH51 (r = 0.19) étaient significativement corrélées (p < 0.05) entre les deux partenaires sexuels, contrairement à celles de VPH31 (r = 0.08) et de VPH42 (r = -0.1). Lorsqu’ajusté en fonction de l’âge des participants, une charge virale élevée augmentait significativement le taux de détection du même type chez le partenaire pour les types 16, 31 et 51. Ainsi, dans les couples hétérosexuels récemment formés, des charges virales élevées sont associées à une détection accrue du même type chez le partenaire sexuel. / The natural history and progression of genital HPV infection are well understood. However, less is known about transmission dynamics of HPV between sexual partners. A better knowledge of risk factors and dynamics of HPV transmission is needed to optimize prevention strategies through vaccination and contraceptive measures. Our study aims to determine if the viral load of HPV infection affects transmission between sexual partners. The association between human papillomavirus (HPV) loads in genital swabs and type-specific concordance of prevalent HPV infection was assessed in 250 heterosexual recently-formed couples to further characterize HPV transmission. Viral loads of HPV16 (r=0.30), HPV18 (r=0.50) and HPV51 (r=0.19) were significantly correlated (p<0.05) between partners in opposite to HPV31 (r=0.08) and HPV42 (r=-0.10). A higher HPV load increased significantly the rate of detection of HPV16, 31 and 51 in sexual partners (age-adjusted odds ratios from 1.64 to 7.71). In recently-formed heterosexual couples, higher HPV16, 31 or 51 load was associated with increased detection of the same HPV type in sexual partners.
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The Cognitive-affective and Behavioural Impact of Emotionally Focused Couple TherapyBurgess Moser, Melissa 21 August 2012 (has links)
Emotionally Focused Couple Therapy (EFT; Johnson, 2004) addresses relationship distress by facilitating the development of new patterns of interaction between partners. These new patterns of interaction are based on partners' vulnerable acknowledgement and expression of attachment needs. Partners' engagement in these new patterns of interaction is thought to improve their relationship-specific attachment bond. Although previous studies have shown EFT to result in excellent relationship satisfaction outcomes (Johnson, Hunsley, Greenberg & Schindler, 1999), research had yet clearly to demonstrate if and how EFT facilitates increases in partners' relationship-specific models attachment security over the course of therapy. To address this research gap, the current study employed Hierarchical Linear Modelling (HLM; Singer & Willet, 2003) to investigate the pattern of change in couples' (n=32) self-reported relationship satisfaction and relationship-specific attachment over the course of EFT. Couples reported significant linear increases in their relationship satisfaction and significant linear decreases in their relationship-specific attachment avoidance over the course of therapy. Couples who completed the blamer-softening therapeutic change event (n=16) demonstrated significant linear decreases in their relationship-specific attachment anxiety after completing this event. Decreases in relationship-specific attachment anxiety predicted increases in couples' relationship satisfaction over the course of therapy. Couples also demonstrated significant increases in the security of their pre-post-therapy relationship-specific attachment behaviour, as coded Secure Base Scoring System (Crowell, Treboux, Gao, Fyffe, Pan & Waters, 2002). The current study also used HLM (Singer & Willet, 2003) to examine how the completion of blamer-softening impacted softened couples' relationship-specific attachment anxiety, and whether the completion of blamer-softening had a similar impact on softened couples' relationship-specific attachment avoidance and relationship satisfaction. Softened couples reported an immediate increase in relationship satisfaction and immediate decrease relationship-specific attachment avoidance at the softening session. Further, softened couples' post-softening decreases in relationship-specific attachment anxiety were initially preceded by an increase at the softening session. These results provided an understanding of how EFT leads to increases in couples' relationship-specific attachment security. These results provide support for the use of attachment theory in the treatment of relationship distress, and also provide an illustration of how attachment can shift over the course of a therapeutic intervention.
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Les facteurs liés à la perception du soutien dans un contexte de douleur chronique : une analyse interprétative phénoménologique auprès de femmes francophonesLaliberté, Geneviève 02 December 2013 (has links)
L’objectif de cette étude a été d’examiner les facteurs liés à la perception du soutien offert de la part de son partenaire, telle que rapportée par des femmes francophones ayant une condition chronique impliquant la douleur comme symptôme primaire. Cinq participantes francophones, âgées de 32 à 66 ans, ont fait partie de l’étude en participant à une entrevue semi-structurée. Les résultats ont été obtenus en utilisant la méthode d’analyse interprétative phénoménologique (Interpretative Phenomenological Analysis, [Smith & Osborn, 2003]). Les analyses ont indiqué 8 sous-thèmes classifiés parmi 3 thèmes superordonnés : 1) la perception du soutien, 2) le concept de soi, et 3) la relation de couple. Ces thèmes, ainsi que les applications empiriques et les retombées cliniques, sont discutés.
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Pastorale studie rakende die inrigting van seksuele intimiteit in die beginfase van die Christelike huwelik / Rineé PretoriusPretorius, Rineé January 2011 (has links)
The research done in preparation for this study illustrated that – although a lot of
research has been done in terms of the impact of intimacy on marriage, Biblical
models for marriage, and the implications of intimacy prior to marriage – few studies
have been done regarding researched Scriptural perspectives and pastoral
guidelines related to sexual intimacy aimed at religious newlywed couples.
The above situation resulted in the main research question:
What pastoral guidelines can be given to a newlywed religious couple regarding
sexual intimacy in the initial stage of their marriage? Further research questions
arose from this research question.
This study was aimed at compiling pastoral guidelines regarding the establishment of
sexual intimacy in the initial stage of the Christian marriage. The method designed
by Zerfass for Practical Theology was used during this study.
During basic theoretical research, as designed in chapter 2, it became clear that
relevant pastoral guidelines regarding the establishment of sexual intimacy in the
Christian marriage can be identified from Scripture. Four guidelines, relevant to this
study, were subsequently formulated.
The practical theoretical research of the neighbouring sciences Psychology and
Sociology in chapter 3 showed that humans are by nature sexual beings and that
this is a need that attention should be given to. Sex inside the marriage is necessary,
good and an important factor in marital happiness. Seeing as marriage is an intimate
and loving relationship, the husband and wife should have each other’s interests and
happiness as priority and not deny each other sex and sexual satisfaction.
An empirical study to determine religious newlywed couples’ perceptions and
attitudes regarding sexual intimacy in the initial stage of the Christian marriage was done in chapter 4. During this qualitative study, seven religious newlywed couples
completed questionnaires, after which semi-structured interviews were conducted
with each individual.
In order to formulate specific practical theoretical pastoral guidelines, the researcher,
in chapter 5, addressed the hermeneutical interaction within the context of religious
newlywed couples. The basic theoretical perspectives arising from Scripture,
practical theoretical perspectives as concluded from neighbouring Sciences, and the
results from the empirical study were processed in order to compile possible
guidelines for pastoral guidance. The aim of this pastoral guidance is the spiritual
growth of both the husband and the wife, and to bring them to a better understanding
of God’s will for sexual intimacy.
The researcher’s final conclusion – as indicated by the central theoretical argument
of this study – is that the compilation of pastoral guidelines regarding the
establishment of sexual intimacy in the initial stage of the Christian marriage can
indeed contribute to a deeper and more intimate marital relationship. / Thesis (M.A. (Pastoral))--North-West University, Potchefstroom Campus, 2011
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La influencia de la relación de pareja en la capacidad funcional en mujeres diagnosticadas de síndrome de fatiga crónica. Un peregrinaje de lo físico a lo psico-socio-físicoBlázquez Montenegro, Alícia 10 June 2011 (has links)
Relacionándolo con las ideas de John Gottman y Robert Levenson, y col. (Gottman, 1993; Levenson y col., 1994), así como otros autores (Smith y Friedermann, 1998; Heffner y col., 2004); en una enfermedad crónica como el síndrome de fatiga crónica (SFC) no sólo el bienestar físico y psicológico están relacionados entre si, sino que las relaciones interpersonales son importantes en el contexto de la salud física y psicológica. Por ello, las relaciones de apoyo cercanas tendrían una influencia sustancial en la adaptación de estos pacientes a su estilo de vida restringido y a la participación en tratamientos concretos (Chowance y Binik, 1982; Radley y Green, 1986, Cordingley y col., 2001).
Características interpersonales (satisfacción en la pareja), así como intrapersonales (personalidad) son importantes en la adaptación a una patología crónica, lo cual tiene una implicación a largo plazo para la salud física (Kiecolt-Glaser y Newton, 2001; Roisman y col., 2007). La capacidad funcional en pacientes con SFC estaría deteriorada y limitaría no sólo la vertiente física sino también aspectos psicológicos y sociales. De igual modo, componentes psicosociales tendrían importancia en el paciente diagnosticado de SFC y podrían, incluso, estar asociados a mayor fatiga y deterioro físico (Silver y col., 2002). En el contexto familiar, el medir de forma más específica en mujeres con SFC estos componentes permitiría ver, no sólo si la pareja influye en la fisiología de la paciente sino también si existe una relación entre parámetros funcionales de la enferma y el bienestar de su entorno inmediato. Se escogió la capacidad funcional medida a través de una prueba de esfuerzo monitorizando la respuesta cardioventilatoria para demostrar esta interacción (Blazquez y col., 2010b; 2020c).
Así pues, el objetivo principal fue confirmar la interrelación entre la capacidad funcional de pacientes con SFC y aspectos psicosociales y llegar a cuantificarla y definirla. Eso justificaría un mayor uso de intervenciones psico-socio-físicas. Teniendo en cuenta que las necesidades expresadas por los pacientes no están sólo relacionadas con la sintomatología física sino principalmente con malestares psicosociales (como, por ejemplo, cambios durante el ciclo vital familiar o la aparición de una disfunción sexual en el subsistema marital), el tratamiento para el SFC debería ser multidisciplinar (Goudsmit y col., 2009; Hurwitz y col., 2010). Entrelazando dichos aspectos quizás se podría aumentar el éxito de los tratamientos no farmacológicos (Powell y col., 2001).
Por ello, una vez confirmada la importancia de incluir un tipo de intervención que contemple lo psico-socio-físico, se propuso la terapia a través de la danza y el movimiento, la cual ya había demostrado su eficacia con pacientes con fibromialgia pero hasta el momento no con SFC (Bojner-Horwitz y col, 2003; Horwitz y col., 2006; Blazquez y col., 2010d).
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A poética do desenho em terapia de casalBorges, André Luiz de Biagi 30 August 2013 (has links)
Couple therapy, influenced by the discourse of social constructionism in its
theorethical multiplicity, emphasizes the use of language as the builder of reality.
However, it typically restricts its interest to the resources of verbal language, devoting
little attention to other linguistic forms. Considering the possibility of contributing to
this knowledge, we propose the inclusion of drawings as a language resource for
therapeutic practices, increasing the understanding of the use of the language in a
responsive-relational joint action for construction of meanings. Thus, this study aims
at understanding the relational processes of meaning co-construction through the
creation of drawings, in the context of Couple Therapy, seeking, in a special way, to
analyze the implications of the use of drawings in the construction of change
narratives of oneself and the marriage relationship. The study was carried out by way
of video recordings of the therapy sessions of three couples, in 10 weekly sessions in
a social clinic context. The analysis of the data, based on the constructionist version
of social poetics, included transcripts of all sessions, followed by readings that
allowed for the identification of different uses of the drawings. From the analysis of the
drawings produced by the three couples, we identified drawing as a creative resource
to: (a) facilitate conversation hampered by tension, (b) signal focus and selection of
oscillatory conversation, (c) explore what has not yet been said in conversation, (d)
strengthen the descriptions and narratives created in conversation and (e) summarize
the assessment process. The detailed analysis of the therapeutic process of one of
the couples, which presented a greater variation of elements referring to individual
and marital aspects, showed that the practice of drawing in marital therapy creates
participatory contexts in which spouses could feel safe to engage in the creative
process, with inventive possibilities of one coming to be desirable and satisfying. In
this way, the drawings became a propitiatory resource in bringing life to the use of the word, as well as promoting other forms of speech, freed from the captivity of the usual
modes, normalized within human relationships. In couple therapy, drawings are
possible as a new part of our language which incorporated with the usual and within
the same, allows for the learning of new gestures and the production of new
meanings. / A terapia de casal influenciada pelo discurso do construcionismo social, em
sua multiplicidade teórica, enfatiza o uso da linguagem como construtora de
realidades, porém, tipicamente, restringe seu interesse aos recursos da linguagem
verbal, dedicando pouca atenção a outras formas linguísticas. Considerando possível
contribuir com esse conhecimento, propomos a inclusão do desenho como recurso
linguístico das práticas terapêuticas, ampliando o entendimento do uso da linguagem
em uma ação conjunta responsiva-relacional de construção de sentidos. Assim, este
estudo tem por objetivo compreender os processos relacionais de coconstrução de
sentidos mediante a criação do desenho, no contexto de Terapia de Casal,
buscando, especificamente, analisar as implicações da utilização do desenho na
construção de narrativas de mudança de si e da relação conjugal. A pesquisa foi
realizada por meio da vídeo-gravação do atendimento de três casais, em 10 sessões
semanais, no contexto de uma clínica social. A análise dos dados, fundamentada na
versão construcionista da poética social, incluiu as transcrições de todas as sessões,
seguidas de leituras que possibilitaram a identificação de diferentes usos do
desenho. A partir da análise dos desenhos produzidos pelos três casais,
identificamos o desenho como recurso criativo para: (a) viabilizar a conversa
dificultada pela tensão; (b) sinalizar o foco e a seleção da conversa oscilatória; (c)
explorar o ainda não dito na conversa; (d) fortalecer as descrições e narrativas
criadas na conversa e (e) sintetizar o processo avaliatório. A análise detalhada do
processo terapêutico de um dos casais, o qual apresentou maior variação de
elementos trabalhados referentes aos aspectos individual e conjugal, mostrou que a
prática do desenho na terapêutica conjugal cria contextos participativos, nos quais os
cônjuges puderam sentir-se seguros para o engajamento no processo criativo, com
possibilidades inventivas de um vir a ser desejável e satisfatório. Dessa forma, o desenho configurou-se em recurso propiciatório para trazer vida ao uso da palavra,
bem como promotor de outras formas de falar libertadoras do cativeiro dos modos
usuais, normatizados dentro das relações humanas. Na terapia de casal, o desenho
é possível como uma nova parte de nossa linguagem que incorporada à usual, dentro
dela, permitirá a aprendizagem de novos gestos e a produção de novos sentidos. / Mestre em Psicologia Aplicada
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[en] THE PROJECT FOR HAVING CHILDREN: THE PERSPECTIVE FOR MEN AND WOMEN / [pt] O PROJETO DE TER FILHOS: DESAFIOS CONTEMPORÂNEOS SOB A ÓTICA DE HOMENS E MULHERESDENISE BERNARDI 28 March 2018 (has links)
[pt] Este trabalho tem como objetivo investigar o adiamento do projeto parental. Levando-se em conta o aumento do número de casais que adiam o projeto de ter filhos, ou optam por não tê-los, e a escassez de estudos acerca da configuração de casais sem filhos por opção, foi realizada uma pesquisa qualitativa da qual participaram cinco homens e cinco mulheres de classe média, membros de casais distintos, com idades entre 33 e 37 anos. Os dados foram obtidos por meio de entrevistas com roteiro semi-estruturado. Os resultados foram analisados de acordo com o método de análise de conteúdo. Verificou-se que existe uma influência de ordem social para que o casal conjugal se torne casal parental. Entretanto, o projeto de ter filhos é cada vez mais um projeto que está sendo repensado. Observou-se que a decisão de ter filhos é uma experiência complexa, que envolve inúmeros fatores, o que contribui para o seu adiamento. Nesse contexto, coloca-se a necessidade de os cônjuges negociarem a opção de quando ter filhos. Os dados sugerem que a negociação da parentalidade ocorre geralmente de modo implícito e não verbalizado, sendo favorecida quando estabelecida explicitamente antes do casamento. Constatou-se, contudo, que a decisão acerca deste projeto é marcada por ambivalência e contradição. Observou-se ainda que, na atualidade, os casais que não têm filhos acreditam ter um nível mais elevado de satisfação no relacionamento conjugal. Conclui-se que, apesar de a sociedade atual aceitar com mais naturalidade a opção daqueles que optam por não ter filhos, ainda assim, há uma cobrança muito grande acerca deste projeto, visto que a escolha de não ter filhos interrompe a continuidade geracional. / [en] This work aims to investigate the postponement of the parental project. Considering the increase in the number of couples who delay the project of having children, or choose not to have them, and the scarcity of studies on the configuration of couples who do not have children by choice, a qualitative research was carried out, in which five middle-class men and five middle-class women, members of distinct couples, aged between 33 and 37 years old, took part. The data were obtained through semi-structured interviews. The results were analyzed according to the content analysis method. It was verified that there is a social influence for the conjugal couple to become a parental one. However, the project of having children is increasingly being reconsidered by the couples. It was observed that the decision to have children is a complex experience and involves many factors, which contributes to its putting off. In this context, the negotiation of having children proves necessary for the couple. The data suggest this is an implicit and non-verbal negotiation, yet, it is favored when pre-established before marriage. It was noted, however, that this decision is marked by ambivalence and contradiction. It was also observed that nowadays, couples who do not have children believe they have a higher level of satisfaction in their marital relationship. Therefore, although today s society accepts more naturally the option of those who choose not to have children, there is still a lot of pressure regarding this project, especially because the choice for not to have children interrupts the generational continuity.
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Transitioning together : narratives of sexuality and intimacy in partners of trans peopleTwist, Jos January 2017 (has links)
Historically trans people have been advised that the gender role transitional process will undoubtedly result in the breakdown of their relationships. Research into trans people's sexuality is growing, yet research into the sexuality of cisgender partners, in the context of their partners' transition, is sparse. This project presents an in-depth narrative analysis of six cisgender women who have been partnered with trans identified individuals. The findings are presented through individual overall impressions of the participants and the collective narratives told. The main story plot that emerged was 'the quest to stay together' which is told through sub plots of identity, the body and invisibility. Further sub plots are offered in regards to the support participants accessed to assist in 'the quest to stay together'. The analysis includes the ways in which narrators drew on, and/or challenged, social discourses of gender and sexuality and also performative aspects of identity. Clinical implications, limitations of the study and future research are also discussed.
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The effect of minor alloying elements (Mg, Ag, Zn) on the nucleation and precipitation behaviour in AlCuLi alloys / L’effet des éléments mineurs (Mg,Ag,Zn) sur la germination et la précipitation de la phase T1 dans des alliages AlCuLiGumbmann, Eva Maria 09 November 2015 (has links)
Les alliages Al-Cu-Li sont particulièrement attractifs pour les applications aéronautiques du fait de leur faible densité, haute limite d'élasticité et bonne ténacité. Ils reçoivent une attention particulièrement importante actuellement, depuis le développement de la troisième génération qui contient des concentrations relativement élevées pour le cuivre et relativement basses pour le Li. Ces nouveaux alliages sont caractérisés par une dureté élevée, une bonne résistance à la fatigue et une bonne stabilité thermique. La phase principale de durcissement est la phase T1 – Al2CuLi qui se présente sous la forme de plaquettes d'environ 1 nm d'épaisseur et 50 nm de diamètre, situées sur les plans {111} de la matrice avec une structure hexagonale. La germination efficace de cette phase durcissante entre en compétition avec d'autres précipités des sous-systèmes constituant ces alliages (comme Al-Cu et Al-Li), et nécessite des conditions particulières, en particulier la présence de dislocations (introduites par pré-déformation) et d'éléments d'alliage mineurs (Mg, Ag, Zn). Bien qu'il soit connu depuis longtemps que l'addition de ces éléments favorise la cinétique de précipitation dans ces alliages et le durcissement associé, leurs mécanismes d'action sont encore très mal compris.Dans ce contexte, l'objectif de la thèse est d'évaluer systématiquement l'effet des additions mineures de Mg, Ag et Zn sur la germination, la cinétique de précipitation et le durcissement correspondant. La caractérisation détaillée de la microstructure est utilisée pour comprendre les mécanismes de modification de la microstructure par les éléments mineurs. Les mesures de la diffusion des rayons X à petits angles et la DSC fournissent respectivement la cinétique de précipitation et la séquence de formation des phases. La microscopie électronique en transmission, utilisée en mode conventionnel, en résolution atomique et en mode de cartographie chimique met en évidence la structure et la distribution spatiale des phases. La dureté donne accès au durcissement. Des matériaux à gradient de concentration ont été élaborés et caractérisés pour évaluer l'effet de la concentration des alliages sur la précipitation et le durcissement.Les résultats mettent en évidence que le Mg est l'élément le plus efficace pour accélérer la cinétique de précipitation et de durcissement. L'addition d'Ag et de Zn augmente également la cinétique de précipitation mais dans une moindre mesure. L'addition de Mg change la séquence de précipitation tout au long de la séquence de vieillissement. La différence principale liée à la présence de Mg pour les premiers stades de traitement thermique est observée par rapport à la précipitation sur les dislocations. Dans les alliages qui contiennent du Mg, les dislocations sont décorées par des phases précurseur contenant de Cu et Mg. Par contre dans les alliages sans Mg celles-ci sont associés à des zones GP qui évoluent ensuite en précipités θ'. Cette différence est attribuée à la germination favorable de T1 sur les phases précurseur de Cu/Mg dans les alliages contenant du Mg, et par la saturation des sites de germination hétérogène par θ' dans les alliages sans Mg.L'augmentation de dureté associée à l'addition d'Ag et Zn est attribuée à une fraction volumique plus élevé de la phase T1. Ag est ségrège à l'interface entre T1 et la matrice et Zn est incorporé dans la structure de T1. Ces résultats suggèrent que les additions de Zn et Ag stimulent la formation de T1.L'influence de la concentration en éléments d'addition mineurs a été caractérisée par une approche résolue en temps et en espace, sur les matériaux contenant un gradient en composition. Cela révèle que l'effet de l'addition de Mg sur la précipitation se produit à une valeur seuil de ~0.1% en poids, suggérant que cela est la concentration nécessaire pour germer des phases précurseur sur les dislocations dans les premiers stades de la précipitation. / Al-Cu-Li alloys are very attractive for aerospace applications alloys due to their low density, high modulus and high strength. They are experiencing a strong interest since the so-called 3rd generation alloys, with relatively high Cu and low Li content, have been developed with high toughness, fatigue resistance and thermal stability. The main precipitating phase in these alloys is the T1-phase which precipitates on {111}Al-planes with a hexagonal structure. It is known that obtaining a fine dispersion of T1, and hence a high strength requires the presence of dislocations as nucleation sites. In addition, commercial Al-Cu-Li alloys contain several minor alloying elements such as Mg, Ag and Zn, which help reaching the desired properties. Although the effect of these minor additions on precipitation of T1 has been characterized, it has not been understood yet.In this context the aim of this thesis is to systematically investigate the effect of minor additions of Mg, Ag and Zn on precipitation nucleation, precipitation kinetics and related strengthening, and to use a detailed characterization of the microstructure to understand the mechanisms by which the modifications induced by these minor additions take place. In-situ Small-Angle X-ray Scattering and Differential Scanning Calorimetry provide the precipitation kinetics and sequence, respectively. Transmission Electron Microscopy, both in conventional mode, atomically-resolved and in chemical mapping mode, reveals the structure and distribution of phases. Hardness gives access to the strengthening. Compositionally gradient materials are fabricated and characterized to evaluate the effect of alloy composition on precipitation and strengthening.The results reveal that Mg is most effective in order to enhance precipitation kinetics and hardening. Additional Ag and Zn further enhance precipitation kinetics but to a lower extent. The addition of Mg changes the precipitation sequence at all times of ageing. The main differences in early aging conditions are observed with respect to precipitation on dislocations. In Mg-containing alloys, dislocations are decorated by Cu-Mg precursor phases, whereas dislocations in Mg-free alloys are mainly associated to GP-zones which evolve subsequently into θ'-phase. In fully precipitated conditions the microstructure of Mg-containing alloys is dominated by the T1 phase, whereas that of Mg-free alloys is dominated by the θ'-phase. This difference is attributed to the favourable nucleation of T1 on Mg-Cu precursor phases in the Mg-containing alloys, and to the consumption of T1-heterogeneous nucleation sites by the θ'-phase in the Mg-free alloys.The increase of hardness associated to the addition of Ag and Zn is associated to a higher volume fraction of the T1-phase. Ag was found to segregate at the T1/matrix interface and Zn was incorporated into the T1-phase, so that it is assumed that their additions stimulate the formation of T1.The influence of the concentration of the minor solute additions has been characterised by combined space and time-resolved experiments on compositionally gradient materials. It reveals that the effect of an Mg addition on precipitation occurs at a threshold level of ~0.1wt%, suggesting that this concentration is that necessary to form the precursor phase at the dislocations during early ageing.
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A review of couple based interventions for PTSD and relational functioning in military populations and their partners (literature review) ; The association between maladaptive emotion regulation and cause of injury type in UK military veterans with co-occurring TBI and PTSD (empirical study)Rose, Mark January 2016 (has links)
Literature review: Background: Military-related stressors can adversely affect veterans’ mental health, in particular PTSD. This can have a detrimental impact on intimate relationships and family adjustment. To date, couple based interventions for PTSD and relational functioning in military couples have not been systematically reviewed. Objectives: This review summarises and synthesises literature investigating couple based interventions for PTSD and relational functioning in military couples. Method: A systematic review of all literature to date across 24 databases using an advanced combination of search terms. Ten studies were included (nine USA; one Australian). Results: A wide range of couple based interventions were identified: complementary and alternative therapies (CAM), sport and recreation programmes, retreats, courses as well as structured disorder focused couple therapies. There was preliminary evidence of support for couple based interventions treating PTSD, with relatively stronger support for disorder focused couple therapies over sports and recreation activities, CAM and retreats/courses. There was relatively little support for improved relational functioning assessed in couple based interventions treating PTSD. However, spouses tended to report a greater degree of improved relational functioning compared to veterans. Conclusions: There was relatively stronger evidence to support disorder focused couple therapies over other treatment modalities. However, there was a lack of robust designs used in effectiveness research of couple based interventions in military populations. There is potential for couple based interventions to be effective in treating PTSD in the UK military. Empirical study: Objective: Deployment to the armed conflicts in Afghanistan (Operation HERRICK/Enduring Freedom) and Iraq (Operation TELIC/Iraqi Freedom) can adversely affect the physical and mental health of those deployed. This study explored the association between traumatic brain injury (TBI), post-traumatic stress disorder (PTSD), the mediating effect of maladaptive emotional regulation strategies (MERS) and the effect of cause of injury (no injury, blunt force related or blast force related) in UK military veterans. Methods: 16 month longitudinal follow-up was conducted on a sample of 123 veterans (Murphy et al., 2015). Regression based secondary data analyses investigated the mediating effects of MERS (n=116) whilst correlational analyses explored the effect of injury mechanism on the relationship between TBI severity and PTSD severity (n=29). Results: Findings revealed support for the role of anger in mediating the effect that TBI severity had on PTSD severity. There was no support that the mechanism of injury was associated with greater reporting of psychological symptoms (anger, alcohol use or PTSD) or that MERS influenced the association between TBI severity and PTSD recovery at 16 month follow-up. Conclusion: Findings contribute to the understanding of how anger may underlie the relationship between TBI severity and PTSD severity, i.e., TBI severity was positively associated with PTSD scores and this effect operated due to increased TBI severity leading to higher rates of expressed anger which in turn increased PTSD symptoms. Future research using larger samples is required to further understand how the complicating factors of MERS and cause of physical injury affect outcome in veterans with co-occurring TBI and PTSD.
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