154 research outputs found

    Museum object handling groups in older adult mental health inpatient care

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    Emerging evidence indicates that museum object handling sessions offer short-term benefits to healthcare participants. This study aimed to further understand psychological and social aspects of object handling in mental health inpatients. Older adults (N ¼ 42) from a psychiatric inpatient ward with diagnoses of depression or anxiety took part in a series of object handling group sessions with 5–12 participants per group. Session audio recordings were subjected to thematic analysis. Five main themes were identified: ‘responding to object focused questions’, ‘learning about objects and from each other’, ‘enjoyment, enrichment through touch and privilege’, ‘memories, personal associations and identity’ and ‘imagination and storytelling’. The first four were congruent with literature associated with positive wellbeing and engagement outcomes but the fifth was a new finding for group contexts. Limitations include the relatively small sample and variable week-to-week group attendance. Audio recordings did not provide information on non-verbal communication and how objects were handled. Future studies should control for attendance and examine effects of multiple sessions over time, ideally with video recording. This study offers preliminary support for museum object handling as a group intervention in mental health care with potential to develop therapeutic aspects of the sessions. Findings indicate that object handling is a novel yet effective intervention with potential for conferring additional advantages by conducting sessions in group settings

    Drawdown prepreg coating method using epoxy terminated butadiene nitrile rubber to improve fracture toughness of glass epoxy composites

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    Laminates of fibre-reinforced prepreg have excellent in-plane mechanical properties, but have inadequate performance in the through thickness direction. Here, we address this issue by application of epoxy-terminated butadiene nitrile (ETBN) liquid rubber between the prepreg laminae using an automatic draw bar coating technique. Test results reveal that by adding ETBN in small quantities in the range of 9.33–61.33 g/m2, the interlaminar critical energy release rates (GIc and GIIc) are improved by up to 122% in mode-I and 49% in mode-II. Moreover, this finding is further supported by the dynamic mechanical analysis thermograms that clearly indicate that coating has not altered the Tg of ETBN-coated samples. Scanning electron microscopic analysis of fracture surfaces showed that rubber particles formed micro cavitations in the epoxy, causing localised rubber rich regions. These resin-rich regions require more energy to fracture, resulting in increased toughness of the glass epoxy prepreg systems. </jats:p

    Evolution of helicity in NOAA 10923 over three consecutive solar rotations

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    We have studied the evolution of magnetic helicity and chirality in an active region over three consecutive solar rotations. The region when it first appeared was named NOAA10923 and in subsequent rotations it was numbered NOAA 10930, 10935 and 10941. We compare the chirality of these regions at photospheric, chromospheric and coronal heights. The observations used for photospheric and chromospheric heights are taken from Solar Vector Magnetograph (SVM) and H_alpha imaging telescope of Udaipur Solar Observatory (USO), respectively. We discuss the chirality of the sunspots and associated H_alpha filaments in these regions. We find that the twistedness of superpenumbral filaments is maintained in the photospheric transverse field vectors also. We also compare the chirality at photospheric and chromospheric heights with the chirality of the associated coronal loops, as observed from the HINODE X-Ray Telescope.Comment: 8 pages, 4 figure

    Polaronic Heat Capacity in The Anderson - Hasegawa Model

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    An exact treatment of the Anderson - Hasegawa two - site model, incorporating the presence of superexchange and polarons, is used to compute the heat capacity. The calculated results point to the dominance of the lattice contribution, especially in the ferromagnetic regime. This behavior is in qualitative agreement with experimental findings.Comment: 9 pages, Revtex, 4 postscript figure

    Core excitation in Coulomb breakup reactions

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    Within the pure Coulomb breakup mechanism, we investigate the one-neutron removal reaction of the type A(a,bγ\gamma)X with 11^{11}Be and 19^{19}C projectiles on a heavy target nucleus 208^{208}Pb at the beam energy of 60 MeV/nucleon. Our intention is to examine the prospective of using these reactions to study the structure of neutron rich nuclei. Integrated partial cross sections and momentum distributions for the ground as well as excited bound states of core nuclei are calculated within the finite range distorted wave Born approximation as well as within the adiabatic model of the Coulomb breakup. Our results are compared with those obtained in the studies of the reactions on a light target where the breakup proceeds via the pure nuclear mechanism. We find that the transitions to excited states of the core are quite weak in the Coulomb dominated process as compared to the pure nuclear breakup.Comment: Revtex format, five postscript figures included, to appear in Phys. Rev.

    Geopolitics at the margins? Reconsidering genealogies of critical geopolitics

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    Critical geopolitics has become one of the most vibrant parts of political geography. However it remains a particularly western way of knowing which has been much less attentive to other traditions of thinking. This paper engages with Pan-Africanism, and specifically the vision of the architect of post-colonial Tanzania, Julius Nyerere, to explore this overlooked contribution to critical engagements with geopoli- tics. Pan-Africanism sought to forge alternative post-colonial worlds to the binary geopolitics of the Cold War and the geopolitical economy of neo-colonialism. The academic division of labour has meant that these ideas have been consigned to African studies rather than being drawn into wider debates around the definitions of key disciplinary concepts. However Nyerere’s continental thinking can be seen as a form of geopolitical imagination that challenges dominant neo-realist projections, and which still has much to offer contemporary political geography

    Kaluza-Klein Type Robertson Walker Cosmological Model With Dynamical Cosmological Term Λ\Lambda

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    In this paper we have analyzed the Kaluza-Klein type Robertson Walker (RW) cosmological models by considering three different forms of variable Λ\Lambda: Λ(a˙a)2\Lambda\sim(\frac{\dot{a}}{a})^2,Λ(a¨a)\Lambda\sim(\frac{\ddot{a}} {a}) and Λρ\Lambda \sim \rho. It is found that, the connecting free parameters of the models with cosmic matter and vacuum energy density parameters are equivalent, in the context of higher dimensional space time. The expression for the look back time, luminosity distance and angular diameter distance are also derived. This work has thus generalized to higher dimensions the well-known results in four dimensional space time. It is found that there may be significant difference in principle at least, from the analogous situation in four dimensional space time.Comment: 16 pages, no figur
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