A new gravitational N-body simulation algorithm for investigation of cosmological chaotic advection

Recently alternative approaches in cosmology seeks to explain the nature of dark matter as a direct result of the non-linear spacetime curvature due to different types of deformation potentials. In this context, a key test for this hypothesis is to examine the effects of deformation on the evolution of large scales structures. An important requirement for the fine analysis of this pure gravitational signature (without dark matter elements) is to characterize the position of a galaxy during its trajectory to the gravitational collapse of super clusters at low redshifts. In this context, each element in an gravitational N-body simulation behaves as a tracer of collapse governed by the process known as chaotic advection (or lagrangian turbulence). In order to develop a detailed study of this new approach we develop the COsmic LAgrangian TUrbulence Simulator (COLATUS) to perform gravitational N-body simulations based on Compute Unified Device Architecture (CUDA) for graphics processing units (GPUs). In this paper we report the first robust results obtained from COLATUS.Comment: Proceedings of Sixth International School on Field Theory and Gravitation-2012 - by American Institute of Physic

Isolation of Clostridium perfringens from swine carcasses and feces

Bacterial hazards are the major concern in the production of food of animal origin. Clostridium perfringens is a common cause of food-borne illness. The illness is characterized by profuse diarrhea and acute abdominal pain. At this study 30 carcass swabs from dorsal area and 30 fecal samples from a swine abattoir were analyzed over C. perfringens presence

The Long-Term Impact of the COVID-19 Pandemic on Loneliness in People Living With Disability and Visual Impairment

Background: There has been growing concern about the impact of restrictions put in place to contain the coronavirus pandemic on loneliness, particularly in individuals with disabilities. This study explored the longitudinal impact of the pandemic on loneliness in these individuals, with a focus on those living with visual impairment (VI). Methods: An online survey was conducted in April-2020 and repeated in March 2021 to explore current life circumstances, health-related behaviours, sleep (Pittsburgh Sleep Quality Index) and social well-being, including state anxiety (State-Trait Anxiety Index) and loneliness (UCLA Loneliness scale). A convenience sample of 602 participants completed the first survey. Participants who agreed to be re-contacted were invited to take part in the follow-up survey. Results: Data is presented for the 160 participants who completed both timepoints. At both timepoints, median loneliness was significantly higher in participants with disabilities and those with VI than in participants with no disabilities. While there was no significant change in loneliness in any of the three subgroups, participants with VI experienced the largest increase in median loneliness. Loneliness was associated with having a mental health condition and higher levels of state anxiety at both timepoints. Conclusions: Individuals with disabilities such as VI experienced consistently higher levels of loneliness than those with no disabilities throughout the pandemic. While loneliness remained relatively stable in individuals with no disabilities, it increased, albeit to a non-significant level, in those with disabilities and particularly those with VI. Interventions designed to alleviate loneliness may benefit from addressing state anxiety

New Molecular Markers Distinguishing Fonsecaea Agents of Chromoblastomycosis

Contains fulltext : 207327.pdf (publisher's version ) (Open Access

Proteomic profile of culture filtrate from the Brazilian vaccine strain Mycobacterium bovis BCG Moreau compared to M. bovis BCG Pasteur

<p>Abstract</p> <p>Background</p> <p>Bacille Calmette-Guerin (BCG) is currently the only available vaccine against tuberculosis (TB) and comprises a heterogeneous family of sub-strains with genotypic and phenotypic differences. The World Health Organization (WHO) affirms that the characterization of BCG sub-strains, both on genomic and proteomic levels, is crucial for a better comprehension of the vaccine. In addition, these studies can contribute in the development of a more efficient vaccine against TB. Here, we combine two-dimensional electrophoresis (2DE) and mass spectrometry to analyse the proteomic profile of culture filtrate proteins (CFPs) from <it>M. bovis </it>BCG Moreau, the Brazilian vaccine strain, comparing it to that of BCG Pasteur. CFPs are considered of great importance given their dominant immunogenicity and role in pathogenesis, being available for interaction with host cells since early infection.</p> <p>Results</p> <p>The 2DE proteomic map of <it>M. bovis </it>BCG Moreau CFPs in the pH range 3 - 8 allowed the identification of 158 spots corresponding to 101 different proteins, identified by MS/MS. Comparison to BCG Pasteur highlights the great similarity between these BCG strains. However, quantitative analysis shows a higher expression of immunogenic proteins such as Rv1860 (BCG1896, Apa), Rv1926c (BCG1965c, Mpb63) and Rv1886c (BCG1923c, Ag85B) in BCG Moreau when compared to BCG Pasteur, while some heat shock proteins, such as Rv0440 (BCG0479, GroEL2) and Rv0350 (BCG0389, DnaK), show the opposite pattern.</p> <p>Conclusions</p> <p>Here we report the detailed 2DE profile of CFPs from <it>M. bovis </it>BCG Moreau and its comparison to BCG Pasteur, identifying differences that may provide relevant information on vaccine efficacy. These findings contribute to the detailed characterization of the Brazilian vaccine strain against TB, revealing aspects that may lead to a better understanding of the factors leading to BCG's variable protective efficacy against TB.</p

Dispersive analysis of K_{L mu3} and K_{L e3} scalar and vector form factors using KTeV data

Using the published KTeV samples of K_L --> pi^{\pm} e^{\mp} nu and K_L --> pi^{\pm} mu^{\mp} nu decays [1], we perform a reanalysis of the scalar and vector form factors based on the dispersive parameterization [2,3]. We obtain phase space integrals I^e_K = 0.15446 \pm 0.00025 and I^{mu}_K = 0.10219 \pm 0.00025. For the scalar form factor parameterization, the only free parameter is the normalized form factor value at the Callan-Treiman point (C); our best fit results in ln C = 0.1915 \pm 0.0122. We also study the sensitivity of C to different parametrizations of the vector form factor. The results for the phase space integrals and C are then used to make tests of the Standard Model. Finally, we compare our results with lattice QCD calculations of F_K/F_pi and f_+(0).Comment: 9 pages, 3 figures, to be published in PR

Alternative communication technology applied inlaryngectomized people due to head and neck cancer

Study design: Integrative literature review. Aims: To summarize the main results of research and publications related to the use of alternative communication technologies for people with restrictions on their communication skills, particularly those laryngectomized with head and neck cancer. Method: This study was based on bibliographic research in electronic databases: PubMed, LILACS, SCIELO and CINAHL through the use of the following descriptors: “Head and Neck Neoplasms”, “Head and Neck Cancer”, “Quality of Life” and “Communication” , their corresponding in Portuguese and their crosses. Results: Selected 14 articles published in the period from 2004 to 2014, categorized into two units of analysis: I: Illness and treatment impact on quality of life and physical aspects, functional and symptoms (N = 5), II: Psychosocial aspects related to the treatment of head and neck cancer (N = 9). The articles indicated that the disease and the treatment of cancer cause body changes, at times traumatic, with important impacts on the functional and esthetic aspects, with speech, nutrition and physical appearance alterations, besides affecting the psychological factors. The laryngectomy is highly stressing and compromises the communication and social interactions, particularly in relation to their families and the health team. The consequences are manifested in everyday life of these subjects, including emotional responses ranging in a singular way to each individual. The use of alternative communication resources can encourage active social participation by people with communication difficulties and favor therefore their quality of life (QoL). Conclusion: The use of alternative resources for communication, by partial or total laryngectomized favors the exercise of the autonomy, maintaining communication skills, active social participation and improves QoL in person’s with cancerModelo do estudo: Revisão Integrativa da Literatura. Objetivo: sintetizar os principais resultados de pesquisas e publicações relacionados ao uso de tecnologias de comunicação alternativa por pessoas com restrições de sua capacidade de comunicação, particularmente daquelas laringectomizadas por câncer de cabeça e pescoço. Método: estudo baseado em levantamento bibliográfico nas bases de dados eletrônicas: PubMed, LILACS, SCIELO e CINAHL, através do uso dos descritores: “Head and Neck Neoplasms”, “Head and Neck Cancer”, “Quality of Life” e “Communication”, seus correspondentes em português e seus cruzamentos. Resultados: Foram selecionados 14 artigos, publicados no período de 2004 à 2014, categorizados em duas unidades de análise: I: Impacto do adoecimento e do tratamento na qualidade de vida e aspectos físicos, funcionais e sintomas (N=5), II: Aspectos psicossociais relacionados ao tratamento de câncer de cabeça e pescoço (N=9). Os artigos indicaram que o adoecimento e o tratamento do câncer causam alterações corporais, por vezes traumáticas, com impactos importantes sobre os aspectos funcionais e estéticos, com alterações da fala, da alimentação e aparência física, além de afetar fatores psicológicos. A laringectomia é altamente estressante e compromete a comunicação e as interações sociais, particularmente em relação a seus familiares e equipe de saúde. Essas consequências manifestam-se na vida cotidiana desses sujeitos, incluindo respostas emocionais que variam de forma singular a cada individuo. O uso de recursos de comunicação alternativa pode favorecer a participação social ativa por parte de pessoas com dificuldades de comunicação e favorecer, assim, sua qualidade de vida (QV). Conclusão: O uso de recursos alternativos para a comunicação, por parte de laringectomizados parciais ou totais, favorece o exercício da autonomia, a manutenção da capacidade de comunicação, a ativa participação social e melhora da QV da pessoa com cânce

Caregivers burden in people in palliative care: an integrative literature review

Modelo do estudo: Revisão Integrativa da Literatura. Objetivo: sintetizar os principais resultados de pesquisas e analisar criticamente as evidências científicas relativas ao tema da sobrecarga de cuidadores de pessoas em Cuidados Paliativos. Método: Busca bibliográfica nas bases de dados MEDLINE, LILACS, CINAHL e na biblioteca virtual SciELO, com os cruzamentos entre os descritores: “Caregivers”, “Palliative Care”, “Terminal Care”, “Hospice Care”, e as palavras-chave “Burden”, “Supportive Care”. Resultados: Foram selecionados 23 artigos publicados em periódicos internacionais, no período de janeiro de 2004 a junho de 2014. Foram categorizados em três unidades de análise: a tarefa de cuidar e as consequências para a vida do cuidador (N=7); a sobrecarga do cuidador diante da proximidade da morte (N=8); programas e serviços de apoio aos cuidadores (N=8). Os artigos indicaram que a sobrecarga do cuidador varia de acordo com sua vivência da tarefa de cuidar e a evolução da doença da pessoa cuidada; o cuidador necessita ser acolhido em suas necessidades e ter acesso a recursos da comunidade e serviços de saúde para diminuir a sobrecarga e melhorar tanto sua qualidade de vida, quanto da pessoa cuidada. Porém, as evidências científicas são consideradas fracas, com níveis 4 (65,2%) e 5 (21,8%) e apenas 13% dos estudos apresentam evidências consideradas fortes. Conclusão: O tema da sobrecarga de cuidadores de pessoas em Cuidados Paliativos é relevante para a pesquisa e para a prática clínica, mas há necessidade de estudos com melhor qualidade metodológica e evidências científicas que alicercem o cuidado a essa populaçãoStudy design: Integrative literature review. Objective: To summarize the main research findings and critically analyze the evidence on the burden of caregivers of people in Palliative Care. Method: Bibliographic search in the electronic databases: MEDLINE, LILACS, CINAHL and the virtual library SciELO, with crosses between the descriptors: “Caregivers”, “Palliative Care”, “Hospice Care”, “Terminal Care” and the keywords “Burden”, “Supportive Care”. Results: 23 articles were selected, having been published in journals between January 2004 and June 2014, categorized into three units of analysis: 1. the task of caring and the consequences to the life of the caregiver (N=7); 2. the caregiver burden before the approach of death (N=8); 3. programs and support services to caregivers (N=8). The articles indicate that the caregiver burden varies according to their experience of care task and the evolution of the cared person’s illness; the caregiver needs to be received on your needs and have access to reduce the burden and improve both caregiver’s quality life as the assisted one. However, scientific evidence is considered fragile, with levels 4 (65.2%) and 5 (21.8%) and only 13% of studies present evidence considered strong. Conclusion: The issue of burden of caregivers of people in palliative care is relevant for research and for clinical practice, but there is need for studies with better methodological quality and scientific evidence to support the care for this populatio

State Anxiety in People Living with Disability and Visual Impairment during the COVID-19 Pandemic

There has been growing recognition of the impact of COVID-19 and the restrictions implemented to contain the virus on mental health. This study provides a preliminary assessment of the longitudinal impact on state anxiety in individuals with disabilities and a subsample of individuals with visual impairment (VI). Two surveys were conducted in April–May 2020 (T1) and March 2021 (T2) to explore state anxiety (State-Trait Anxiety Inventory). Participants who consented to being re-contacted were invited to take part in T2. A total of 160 participants completed T1 and T2. There were no significant group differences in median anxiety at T1; however, at T2 anxiety was significantly higher in those with disabilities and there was a trend towards being higher in participants with VI compared to those with no disabilities. While not statistically significant within any of the three subgroups, state anxiety decreased slightly in those with no disabilities. The absence of a disability affecting mobility, experiencing loneliness, and poorer sleep quality predicted state anxiety at both timepoints. While anxiety appeared to decrease in individuals with no disabilities, it remained comparatively stable, and higher in those with disabilities. Loneliness and poor sleep may need to be addressed to alleviate feelings of anxiety

A preliminary investigation of the well-being of visually impaired ex-service personnel in the UK

Research has shown that visual impairment may impact daily functioning, health, and well-being negatively for adults of all ages. Ex-service personnel (‘veterans’) too may be at risk of poor health and well-being outcomes associated with post-military life, and this may be exacerbated by the presence of visual impairment. Despite this, research considering the experience of blind veterans has been limited and has not yet assessed well-being for these individuals across a broad spectrum of life domains. Rather, it has highlighted poor mental health and psychological well-being in working-age visually impaired veterans. However, the experiences of older visually impaired veterans (who make up the majority of visually impaired veterans in the United Kingdom) have been poorly represented in the literature. This pilot study aimed to provide a preliminary assessment of holistic well-being in an adult sample of 97 UK blind veterans, predominantly composed of older age veterans (majority over 80 years). Cross-sectional well-being data were collected using a validated measure of well-being (the Well-Being Inventory [WBI]). Results suggest that members of Blind Veterans UK are functioning well and are satisfied across four life domains (vocation, finances, health, and social relationships). Lower health satisfaction was identified, particularly in blind veterans with comorbid mental health conditions. Results are discussed in relation to the older age of the sample, the limitations of face-to-face survey administration, and the applicability of the WBI finance domain in this age cohort. Recommendations are made for future research in this population