914 resultados para Hand-held cameras


Relevância:

20.00% 20.00%

Publicador:

Resumo:

The Mississippi Valley-type (MVT) Pb-Zn ore district at Mezica is hosted by Middle to Upper Triassic platform carbonate rocks in the Northern Karavanke/Drau Range geotectonic units of the Eastern Alps, northeastern Slovenia. The mineralization at Mezica covers an area of 64 km(2) with more than 350 orebodies and numerous galena and sphalerite occurrences, which formed epigenetically, both conformable and discordant to bedding. While knowledge on the style of mineralization has grown considerably, the origin of discordant mineralization is still debated. Sulfur stable isotope analyses of 149 sulfide samples from the different types of orebodies provide new insights on the genesis of these mineralizations and their relationship. Over the whole mining district, sphalerite and galena have delta(34)S values in the range of -24.7 to -1.5% VCDT (-13.5 +/- 5.0%) and -24.7 to -1.4% (-10.7 +/- 5.9%), respectively. These values are in the range of the main MVT deposits of the Drau Range. All sulfide delta(34)S values are negative within a broad range, with delta(34)S(pyrite) < delta(34)S(sphalerite) < delta(34)S(galena) for both conformable and discordant orebodies, indicating isotopically heterogeneous H(2)S in the ore-forming fluids and precipitation of the sulfides at thermodynamic disequilibrium. This clearly supports that the main sulfide sulfur originates from bacterially mediated reduction (BSR) of Middle to Upper Triassic seawater sulfate or evaporite sulfate. Thermochemical sulfate reduction (TSR) by organic compounds contributed a minor amount of (34)S-enriched H(2)S to the ore fluid. The variations of delta(34)S values of galena and coarse-grained sphalerite at orefield scale are generally larger than the differences observed in single hand specimens. The progressively more negative delta(34)S values with time along the different sphalerite generations are consistent with mixing of different H(2)S sources, with a decreasing contribution of H(2)S from regional TSR, and an increase from a local H(2)S reservoir produced by BSR (i.e., sedimentary biogenic pyrite, organo-sulfur compounds). Galena in discordant ore (-11.9 to -1.7%; -7.0 +/- 2.7%, n=12) tends to be depleted in (34)S compared with conformable ore (-24.7 to -2.8%, -11.7 +/- 6.2%, n=39). A similar trend is observed from fine-crystalline sphalerite I to coarse open-space filling sphalerite II. Some variation of the sulfide delta(34)S values is attributed to the inherent variability of bacterial sulfate reduction, including metabolic recycling in a locally partially closed system and contribution of H(2)S from hydrolysis of biogenic pyrite and thermal cracking of organo-sulfur compounds. The results suggest that the conformable orebodies originated by mixing of hydrothermal saline metal-rich fluid with H(2)S-rich pore waters during late burial diagenesis, while the discordant orebodies formed by mobilization of the earlier conformable mineralization.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Report on a special investigation of certain bank accounts held by the City of Davenport Fire Department for the period January 1, 2009 through October 22, 2014

Relevância:

20.00% 20.00%

Publicador:

Resumo:

We report an experiment where participants observed an attack on their virtual body as experienced in an immersive virtual reality (IVR) system. Participants sat by a table with their right hand resting upon it. In IVR, they saw a virtual table that was registered with the real one, and they had a virtual body that substituted their real body seen from a first person perspective. The virtual right hand was collocated with their real right hand. Event-related brain potentials were recorded in two conditions, one where the participant"s virtual hand was attacked with a knife and a control condition where the knife only struck the virtual table. Significantly greater P450 potentials were obtained in the attack condition confirming our expectations that participants had a strong illusion of the virtual hand being their own, which was also strongly supported by questionnaire responses. Higher levels of subjective virtual hand ownership correlated with larger P450 amplitudes. Mu-rhythm event-related desynchronization in the motor cortex and readiness potential (C3C4) negativity were clearly observed when the virtual hand was threatened as would be expected, if the real hand was threatened and the participant tried to avoid harm. Our results support the idea that event-related potentials may provide a promising non-subjective measure of virtual embodiment. They also support previous experiments on pain observation and are placed into context of similar experiments and studies of body perception and body ownership within cognitive neuroscience.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

At the beginning of the 1990s, the concept of "European integration" could still be said to be fairly unambiguous. Nowadays, it has become plural and complex almost to the point of unintelligibility. This is due, of course, to the internal differentiation of EU membership, with several Member States pulling out of key integrative projects such as establishing an area without frontiers, the "Schengen" area, and a common currency. But this is also due to the differentiated extension of key integrative projects to European non-EU countries - Schengen is again a case in point. Such processes of "integration without membership", the focus of the present publication, are acquiring an ever-growing topicality both in the political arena and in academia. International relations between the EU and its neighbouring countries are crucial for both, and their development through new agreements features prominently on the continent's political agenda. Over and above this aspect, the dissemination of EU values and standards beyond the Union's borders raises a whole host of theoretical and methodological questions, unsettling in some cases traditional conceptions of the autonomy and separation of national legal orders. This publication brings together the papers presented at the Integration without EU Membership workshop held in May 2008 at the EUI (Max Weber Programme and Department of Law). It aims to compare different models and experiences of integration between the EU, on the one hand, and those European countries that do not currently have an accession perspective on the other hand. In delimiting the geographical scope of the inquiry, so as to scale it down to manageable proportions, the guiding principles have been to include both the "Eastern" and "Western" neighbours of the EU, and to examine both structured frameworks of cooperation, such as the European Neighbourhood Policy and the European Economic Area, and bilateral relations developing on a more ad hoc basis. These principles are reflected in the arrangement of the papers, which consider in turn the positions of Ukraine, Russia, Norway, and Switzerland in European integration - current standing, perspectives for evolution, consequences in terms of the EU-ization of their respective legal orders1. These subjects are examined from several perspectives. We had the privilege of receiving contributions from leading practitioners and scholars from the countries concerned, from EU highranking officials, from prominent specialists in EU external relations law, and from young and talented researchers. We wish to thank them all here for their invaluable insights. We are moreover deeply indebted to Marise Cremona (EUI, Law Department, EUI) for her inspiring advice and encouragement, as well as to Ramon Marimon, Karin Tilmans, Lotte Holm, Alyson Price and Susan Garvin (Max Weber Programme, EUI) for their unflinching support throughout this project. A word is perhaps needed on the propriety and usefulness of the research concept embodied in this publication. Does it make sense to compare the integration models and experiences of countries as different as Norway, Russia, Switzerland, and Ukraine? Needless to say, this list of four evokes a staggering diversity of political, social, cultural, and economic conditions, and at least as great a diversity of approaches to European integration. Still, we would argue that such diversity only makes comparisons more meaningful. Indeed, while the particularities and idiosyncratic elements of each "model" of integration are fully displayed in the present volume, common themes and preoccupations run through the pages of every contribution: the difficulty in conceptualizing the finalité and essence of integration, which is evident in the EU today but which is greatly amplified for non-EU countries; the asymmetries and tradeoffs between integration and autonomy that are inherent in any attempt to participate in European integration from outside; the alteration of deeply seated legal concepts, and concepts about the law, that are already observable in the most integrated of the non-EU countries concerned. These issues are not transient or coincidental: they are inextricably bound up with the integration of non-EU countries in the EU project. By publishing this collection, we make no claim to have dealt with them in an exhaustive, still less in a definitive manner. Our ambition is more modest: to highlight the relevance of these themes, to place them more firmly on the scientific agenda, and to provide a stimulating basis for future research and reflection.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

When a rubber hand is placed on a table top in a plausible position as if part of a person"s body, and is stroked synchronously with the person"s corresponding hidden real hand, an illusion of ownership over the rubber hand can occur (Botvinick and Cohen 1998). A similar result has been found with respect to a virtual hand portrayed in a virtual environment, a virtual hand illusion (Slater et al. 2008). The conditions under which these illusions occur have been the subject of considerable study. Here we exploited the flexibility of virtual reality to examine four contributory factors: visuo-tactile synchrony while stroking the virtual and the real arms, body continuity, alignment between the real and virtual arms, and the distance between them. We carried out three experiments on a total of 32 participants where these factors were varied. The results show that the subjective illusion of ownership over the virtual arm and the time to evoke this illusion are highly dependent on synchronous visuo-tactile stimulation and on connectivity of the virtual arm with the rest of the virtual body. The alignment between the real and virtual arms and the distance between these were less important. It was found that proprioceptive drift was not a sensitive measure of the illusion, but was only related to the distance between the real and virtual arms.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

This article provides an in-depth study of long-term female unemployment in Catalonia.Long-term unemployment statistics reveal which social groups are most likely to experience difficulty re-entering the labour market. In this case, we found that women are mainly affected by this type of labour exclusion, in particular poorly qualified, working-class women who are aged over 45 and with family responsibilities.The article aims to explore how the overlapping of factors such as gender, age, social class, origin and the division of work based on gender are related to long-term female unemployment. Moreover, we were able to detect which conceptual tools provide us with the production/reproduction paradigm so as to be able to analyse the future of female unemployment. The methodology we used combines quantitative and qualitative approaches. On the one hand, the analysis of secondary statistical data focusing on Catalonia is useful in understanding the situation from a macro-social perspective. On the other hand, an exploratory discussion group enables us to investigate social imaginary practises among unemployed working class women aged over 45. This discussion group was held in Igualada -capital of the Anoia region - an area of Catalonia deeply affected by unemployment in the current economic crisis.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Hand hygiene compliance of patients receiving hemodialysis treatment is a contemporary discussion topic among health care professionals in the Nephrology Clinic of Helsinki University City Hospital. The purpose of the Final Thesis is to review patient hand hygiene in terms of risks its lack entails and based on the evidence based findings to design an end product as a poster. The poster can be utilised in the Nephrology Clinic's nursing environment to educate and motivate patients to pay specifid attention to the importance of hand hygiene. The method used was a systematic literature review. The most important evidence based findings were extracted from the chosen thirteen scientific articles. All articles were searched from the Cumulative Index to Nursing and Allied Health Literature electronic database. The gathered information was then used to build the content of a patient education tool that for this project was defined as a Poster. The findings in this study showed that transmission of bloodborne infections, like Hepatitis B or C virus can occur through a vascular access and that the consequences of this can be very fatal. Additionally, environmental surfaces such as furniture, door knobs and dialysis machine control knobs were all possible infection sources for the patient receiving hemodialysis treatment. Adherence to good hand hygiene behaviour lowered the risk for infections. The end product of this study is a poster that is targeted to patients undergoing hemodialysis treatment. Using a health promotion agenda in the Poster, it is hoped that patients will pay more attention to the importance of hand hygiene and that they will be more motivated to use aseptic methods such as alcohol based hand rubs in the hemodialysis setting.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

L'idée de complémentarité de certaines épreuves projectives s'est dessinée dès les années 1960, telles que Rorschach - test du Village, Rorschach - CAT et enfin Rorschach - TAT. L'essentiel des dispositifs projectifs mobilise les épreuves de Rorschach et de TAT dont la complémentarité a été largement pointée, notamment, par Anzieu et Chabert (1983), Chabert (1998), Roman (2006, 2007, 2009) et Emmanuelli et Azoulay (2001, 2008, 2009). Les épreuves de Hand-Test, Rorschach et TAT opèrent selon des dynamiques différentes à partir de consignes, sorte d'« injonction à imaginer » (Roman, 2008). Le défi méthodologique et épistémologique est d'envisager une complémentarité entre ces trois épreuves projectives, complémentarité qui ne va pas de soi dans la mesure où le Hand-Test a été pensé à partir du modèle de l'Analyse Structurale, le Rorschach et le TAT dans une perspective psychodynamique. L'enjeu du défi est de parvenir à se dégager du modèle de l'Analyse Structurale, d'une dimension déterministe et inscrire le Hand-Test dans une dimension processuelle d'une part, et de croiser ces trois épreuves afin de parvenir à mettre en avant les ressources du sujet quant à l'émergence de potentialités de transformations bien souvent, trop souvent, reléguées au second plan, voire négligées, lors de la prise en charge institutionnelle d'autre part. Ainsi, l'approche de la complémentarité des épreuves se trouve au service d'une compréhension de l'évolution du rapport à l'agir chez les adolescents. L'écart qui se donne à voir entre la conception des épreuves projectives envisagées dans une perspective psychodynamique et la manière d'appréhender le Hand-Test constitue le défi méthodologique et épistémologique que nous proposons de discuter.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Langerhans' cell histiocytosis (LCH) is a rare and enigmatic clonal disorder that affects mainly children. It is characterized by single or multiple granulomatous mass lesions composed of cells with the Langerhans' cell phenotype. Clinical presentation and behavior are heterogeneous and can range from a solitary lytic bone lesion (i.e., eosinophilic granuloma) with a favorable course to a fatal disseminated leukaemia-like form, with a wide spectrum of intermediate clinical presentations between these two extremes. Although LCH typically involves the bone, lesions can be found in almost all organs. We are reporting the case of a multisystem LCH in a 47-year-old patient who presented with a panhypopituitarism and diabetes insipidus, and who, 5 years later, developed mandibular, mastoid and femoral lesions. The final diagnosis of LCH was made on mandibular biopsy.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Promazine hydrochloride was injected accidentally in the antecubital artery of a 42-year-old woman, resulting in severe ischemia of the second and third fingers of her right hand which lasted for four days before she was hospitalized. Vasodilation by combining axillary plexus block and intravenous sodium nitroprusside did not improve ischemia and local thrombolysis was performed using recombinant tissue-type plasminogen activator (50 mg over 8 hours), resulting in normalization of digital pressure in one of the two affected fingers. The outcome was favourable and amputation could be avoided.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The effects of 0, 30 and 60 mM NaCl and substrates (red peat, sand or 3:1:1 [w/w] mixture of peat, sand, or soil) on vegetative growth of lulo, an Andean fruit species, during 12 weeks were studied. The experiment was carried out by using 2000 cm³ of polypropylene plastic pots under greenhouse conditions. Plant height, number of leaves and nodes, leaf area, total plant dry matter (DM), and shoot/root ratio were evaluated. With the increase of salt concentration, the plant height, the number of leaves and nodes, the leaf areas and plant dry mass DM decreased, whereas shoot/root ratio increased. Sand grown lulo plants were most affected by salinity and presented total mortality at 60 mM NaCl. On the other hand, plants held either in peat or in substrate mixture developed larger height, greater leaf and node numbers, higher leaf area and dry matter content. Shoot/root ratio in control (soil) and sand-grown plants (30 mM NaCl) was lower.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Our body schema gives the subjective impression of being highly stable. However, a number of easily-evoked illusions illustrate its remarkable malleability. In the rubber-hand illusion, illusory ownership of a rubber-hand is evoked by synchronous visual and tactile stimulation on a visible rubber arm and on the hidden real arm. Ownership is concurrent with a proprioceptive illusion of displacement of the arm position towards the fake arm. We have previously shown that this illusion of ownership plus the proprioceptive displacement also occurs towards a virtual 3D projection of an arm when the appropriate synchronous visuotactile stimulation is provided. Our objective here was to explore whether these illusions (ownership and proprioceptive displacement) can be induced by only synchronous visuomotor stimulation, in the absence of tactile stimulation.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

BACKGROUND: Treatment of septic hand tenosynovitis is complex, and often requires multiple débridements and prolonged antibiotic therapy. The authors undertook this study to identify factors that might be associated with the need for subsequent débridement (after the initial one) because of persistence or secondary worsening of infection. METHODS: In this retrospective single-center study, the authors included all adult patients who presented to their emergency department from 2007 to 2010 with septic tenosynovitis of the hand. RESULTS: The authors identified 126 adult patients (55 men; median age, 45 years), nine of whom were immunosuppressed. All had community-acquired infection; 34 (27 percent) had a subcutaneous abscess and eight (6 percent) were febrile. All underwent at least one surgical débridement and had concomitant antibiotic therapy (median, 15 days; range, 7 to 82 days). At least one additional surgical intervention was required in 18 cases (median, 1.13 interventions; range, one to five interventions). All but four episodes (97 percent) were cured of infection on the first attempt after a median follow-up of 27 months. By multivariate analysis, only two factors were significantly associated with the outcome "subsequent surgical débridement": abscess (OR, 4.6; 95 percent CI, 1.5 to 14.0) and longer duration of antibiotic therapy (OR, 1.2; 95 percent CI, 1.1 to 1.2). CONCLUSION: In septic tenosynovitis of the hand, the only presenting factor that was statistically predictive of an increased risk of needing a second débridement was the presence of a subcutaneous abscess. CLINICAL QUESTION/LEVEL OF EVIDENCE: Risk, III.