2,322 research outputs found

    Report on geophysical and geological surveys at Blackmount, Argyllshire

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    Blackmount, on the southern fringe of Rannoch Moor is largely drift covered but, where exposed, the underlying Precambrian Moine psammite contains granitic veins which probably stem from the adjacent (Devonian) Moor of Rannoch granite. These veins are generally pyritiferous and, at one locality, carry small amounts of molybdenite. Blackmount is also traversed by the Ericht-Laidon Fault, which, in theory, and by analogy with a similar fault to the south-east (the Tyndrum Fault), could be a site of significant sulphide mineralisation. Magnetic, very low frequency electro-magnetic (VLF EM), slingram EM and induced polarisation measurements carried out in the area of the veins suggest that the mineralisation has little or no lateral or depth continuation. Similar surveys were successful in locating the Ericht-Laidon Fault beneath drift, but suggest no associated mineralisation down to the\ud greatest depth investigated

    Influence of Foliar Exposure, Adjuvants, and Rain-free Period on the Efficacy of Glyphosate for Torpedograss Control

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    The proportion of torpedograss tissue exposed to glyphosate at application rates of 0.28, 0.56, 1.12, 2.24, and 4.48 kg/ha affected control as measured by regrowth. The effect of tissue exposure was more pronounced as application rate decreased. This study suggests that higher rates of glyphosate need to be used during higher water levels, when less torpedograss tissue is exposed to herbicide spray and lower rates may be used during periods of low water levels. Addition of the water conditioning agent Quest (R) (0.25% v/v) to glyphosate spray mixtures diminished the influence of simulated rain events following glyphosate application. Twelve other adjuvants did not influence the effect of simulated rain events

    Investigation of stratiform sulphide mineralisation at McPhun's Cairn, Argyllshire

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    Youth-identified Considerations for Programming to Support Newcomers’ Healthy Development: A Group Concept Mapping Study

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    Background There is a well-documented need for more responsive promotion and prevention programming for young immigrants and refugees in the context of mental health and healthy development. Incorporating the voice of newcomers in the development of promotion and prevention efforts could assist in producing culturally-relevant materials and improve program outcomes. Objective Our goal was to utilize youth voice to identify considerations for developing programming to support newcomer youths’ healthy development. Methods We employed mixed methods and analyzed data using concept mapping. A total of 37 newcomers between the ages of 14 and 22 participated in focus groups to share their ideas for creating programming that would focus on relationships and well-being. Relevant responses were collated, cleaned, and generated into unique statements, and then sorted individually by 26 youth into thematically similar categories. We used multidimensional scaling and hierarchal cluster analysis to produce a concept map. Results Six concepts, in rank order of importance, emerged as follows: create a space for sharing; discuss relational issues; teach strategies for adjusting to a new country; teach wellness skills; have feel-good activities; and plan for diversity. Conclusions Participants’ lived experience and their own attendance in programming at newcomer organizations assisted them in brainstorming what types of activities, topics, and skills would be helpful for other newcomer youth, as well as considerations for facilitators implementing such programming. Promotion and prevention efforts intended for newcomer youth may benefit by incorporating ideas from the concept map

    Investigation of stratiform sulphide mineralisation at Meall Mor, South Knapdale, Argyll

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    A co-ordinated geochemical-geophysical-geological investigation of copper mineralisation in the Meal1 ?46r area, South Knapdale, Argyll was carried 0th in 1976 and followed by a drilling programme of 3 shallow holes in early 1977. The mineralisation occursin a zone of weak stratiform sulphide mineralisation (the pyrite zone) with a strike length of 1Okm in the Upper &ins Quartz&e of the Middle Dalradian. The geochemical drainage survey showed the existence of a strongly anomalous distribution of Cu and Sb in the Abhainn Srathain draining south from . Meal1 M&- and detailed soil sampling over the pyrite zone outlined a broad area enriched in copper. Deeper soil sampling confirmed the anomalously high copper values and a coincident IP anomaly was found stretching from Meal1 M& south to the old mine workings on Abhainn Srathain, and is probably caused by a local enrichment of pyrite and chalcopyrite within the pyrite zone. Three boreholes were drilled; two on coincident geochemical and geophysical anomalies, and the third beneath the old mines at Abhainn Srathain. Copper values in the first two holes range up to 0.24% Cu over 4.27m, but up to 1.06% Cu over 2.67m in the third and this enrichment may be related to a later remobilisation of the disseminated chalcopyrite. The results of subsequent drilling at two other sites are given in Appendix III

    Feasibility Trial of the School-Based STRONG Intervention to Promote Resilience Among Newcomer Youth

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    There are thousands of refugee students in Canadian schools and many struggle with distress and trauma symptoms. Even those not demonstrating overt distress may face adjustment challenges. This paper describes the pilot of the Supporting Transition Resilience of Newcomer Groups (STRONG) program in ten schools. STRONG is a 10-session, manualized program focused on building skills and helping students process their migration journey. This pilot used a pragmatic mixed-methods approach to evaluate the feasibility of STRONG, with a focus on acceptability, implementation, and perceived utility of the intervention. Clinicians (n = 16) provided data at the training, throughout the intervention and at the end through clinician surveys and focus groups. Clinicians reported high levels of acceptability for the training and program. Implementation challenges included time constraints, external influences, and some challenges with language. Overall STRONG was seen to provide significant positive benefits for students in increasing connectedness, stress management, and coping strategies. Clinicians felt that students developed more positive self-image and had improved optimism. This feasibility trial of the STRONG program indicated the potential utility for promoting resilience and reducing distress among refugee students through a structured, school-based group intervention

    Using Youth Voice to Inform Programs and Services Promoting Newcomers\u27 Healthy Development

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    Effective programs to support the healthy development and well-being of youth who have immigrated to Canada are needed. This integrated-article dissertation accentuated the perspectives of refugee and immigrant youth to identify considerations for programming and strategies to promote their healthy development. The first paper (Chapter Two) utilized focus groups to explore newcomer youths’ experiences relocating to a new country and advice for other youth who have recently arrived in Canada. We identified five overarching themes across groups through thematic analysis: (1) moving to a new county is hard, (2) maintain a healthy mindset, (3) take an active role in the adjustment process, (4) stay true to who you are, and (5) you are not alone. Findings captured the hardships of adapting to a new country while also demonstrating participants’ resilience, coping skills, and strategies to lead meaningful lives. The second paper (Chapter Three) utilized youth voice to identify considerations for developing programming to support newcomer youths’ relationships and well-being. We applied group concept mapping and identified six concepts as follows, in rank order of importance: create a space for sharing; discuss relational issues; teach strategies for adjusting to a new country; teach skills for wellness; have feel-good activities; and plan for diversity. Participants’ lived experience and their own attendance in programming at newcomer-serving organizations provided a basis for them to brainstorm what types of activities, topics and skills they believe would be helpful for other newcomer youth, as well as considerations for facilitators implementing such programming. Finally, the third paper (Chapter Four) evaluated the acceptability of an evidence-informed healthy relationships program with newcomer youth at three newcomer-serving agencies. Using a mixed-methods case study approach, the perspectives of youth participants, program facilitators, and agency administrators suggested the program is promising in terms of fit and acceptability. Stakeholders also identified how facilitators can tailor content and activities to be more accessible and culturally meaningful for immigrants and refugees. Taken together, the findings from these papers highlight the perspectives of newcomer youth and advance understanding of how to support their adjustment and healthy development

    Refraction of Electromagnetic Energy for Wave Packets Incident on a Negative Index Medium is Always Negative

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    We analyze refraction of electromagnetic wave packets on passing from an isotropic positive to an isotropic negative refractive index medium. We definitively show that in all cases the energy is always refracted negatively. For localized wave packets, the group refraction is also always negative.Comment: 5 pages, 3 figure

    Universal Cellular Automata and Class 4

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    Wolfram has provided a qualitative classification of cellular automata(CA) rules according to which, there exits a class of CA rules (called Class 4) which exhibit complex pattern formation and long-lived dynamical activity (long transients). These properties of Class 4 CA's has led to the conjecture that Class 4 rules are Universal Turing machines i.e. they are bases for computational universality. We describe an embedding of a ``small'' universal Turing machine due to Minsky, into a cellular automaton rule-table. This produces a collection of (k=18,r=1)(k=18,r=1) cellular automata, all of which are computationally universal. However, we observe that these rules are distributed amongst the various Wolfram classes. More precisely, we show that the identification of the Wolfram class depends crucially on the set of initial conditions used to simulate the given CA. This work, among others, indicates that a description of complex systems and information dynamics may need a new framework for non-equilibrium statistical mechanics.Comment: Latex, 10 pages, 5 figures uuencode

    Resonant and anti-resonant frequency dependence of the effective parameters of metamaterials

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    We present a numerical study of the electromagnetic response of the metamaterial elements that are usedto construct materials with negative refractive index. For an array of split ring resonators (SRR) we find that the resonant behavior of the effective magnetic permeability is accompanied by an anti-resonant behavior of the effective permittivity. In addition, the imaginary parts of the effective permittivity and permeability are opposite in sign. We also observe an identical resonant versus anti-resonant frequency dependence of the effective materials parameters for a periodic array of thin metallic wires with cuts placed periodically along the length of the wire, with roles of the permittivity and permeability reversed from the SRR case. We show in a simple manner that the finite unit cell size is responsible for the anti-resonant behavior
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