Leaf water relations of Eucalyptus cloeziana and Eucalyptus argophloia in response to water deficit

Leaf water relations responses to limited water supply were determined in 7-month-old plants of a dry inland provenance of Eucalyptus argophloia Blakely and in a humid coastal provenance (Gympie) and a dry inland provenance (Hungry Hills) of Eucalyptus cloeziana F. Muell. Each provenance of E. cloeziana exhibited a lower relative water content at the turgor loss point, a lower apoplastic water content, a smaller ratio of dry mass to turgid mass and a lower bulk modulus of elasticity than the single provenance of E. argophloia. Osmotic potential at full turgor and water potential at the turgor loss point were significantly lower in E. argophloia and the inland provenance of E. cloeziana than in the coastal provenance of E. cloeziana. There was limited osmotic adjustment in response to soil drying in E. cloeziana, but not in E. argophloia. Between-species differences in water relations parameters were larger than those between the E. cloeziana provenances. Both E. cloeziana provenances maintained turgor under moderate water stress through a combination of osmotic and elastic adjustments. Eucalyptus argophloia had more rigid cell walls and reached lower water potentials with less reduction in relative water content than either of the E. cloeziana provenances, thereby enabling it to extract water from dryer soils.

Perceptions of evidence-based practice: A survey of Australian occupational therapists

Evidence-based practice (EBP) requires clinicians to access, appraise and integrate research literature with clinical experience and clients' perspectives. Currently, little is known about occupational therapists' attitudes to EBP, their perception of implementation barriers or their educational needs. A questionnaire reflecting these issues was sent to a proportionate random sample of 1491 members of the national professional occupational therapy association, OT AUSTRALIA. The questionnaire was completed by 649 (44%) participants. Occupational therapists were positive about EBP with most (96%) agreeing that EBP is important to occupational therapy. Although 56% used research to make clinical decisions, more relied on clinical experience (96%), information from continuing education (82%) and colleagues (80%). Lack of time, evidence and skills were identified as the main barriers to the implementation of EBP. Over half (52%) expressed strong interest in EBP skills training, and most (80%) indicated an interest in the availability of brief summaries of evidence. Targeted educational initiatives, resources and systems are needed to support EBP in occupational therapy.

Escalation of Drug Use in Early-Onset Cannabis Users vs Co-twin Controls

Context Previous studies have reported that early initiation of cannabis (marijuana) use is a significant risk factor for other drug use and drug-related problems. Objective To examine whether the association between early cannabis use and subsequent progression to use of other drugs and drug abuse/dependence persists after controlling for genetic and shared environmental influences. Design Cross-sectional survey conducted in 1996-2000 among an Australian national volunteer sample of 311 young adult (median age, 30 years) monozygotic and dizygotic same-sex twin pairs discordant for early cannabis use (before age 17 years). Main Outcome Measures Self-reported subsequent nonmedical use of prescription sedatives, hallucinogens, cocaine/other stimulants, and opioids; abuse or dependence on these drugs (including cannabis abuse/dependence); and alcohol dependence. Results Individuals who used cannabis by age 17 years had odds of other drug use, alcohol dependence, and drug abuse/dependence that were 2.1 to 5.2 times higher than those of their co-twin, who did not use cannabis before age 17 years. Controlling for known risk factors (early-onset alcohol or tobacco use, parental conflict/separation, childhood sexual abuse, conduct disorder, major depression, and social anxiety) had only negligible effects on these results. These associations did not differ significantly between monozygotic and dizygotic twins. Conclusions Associations between early cannabis use and later drug use and abuse/dependence cannot solely be explained by common predisposing genetic or shared environmental factors. The association may arise from the effects of the peer and social context within which cannabis is used and obtained. In particular, early access to and use of cannabis may reduce perceived barriers against the use of other illegal drugs and provide access to these drugs.

Dynamics of Gray Matter Loss in Alzheimer's Disease

We detected and mapped a dynamically spreading wave of gray matter loss in the brains of patients with Alzheimer's disease (AD). The loss pattern was visualized in four dimensions as it spread over time from temporal and limbic cortices into frontal and occipital brain regions, sparing sensorimotor cortices. The shifting deficits were asymmetric (left hemisphere >right hemisphere) and correlated with progressively declining cognitive status ( p 15% loss). The maps distinguished different phases of AD and differentiated AD from normal aging. Local gray matter loss rates (5.3 +/- 2.3% per year in AD v 0.9 +/- 0.9% per year in controls) were faster in the left hemisphere ( p < 0.029) than the right. Transient barriers to disease progression appeared at limbic/frontal boundaries. This degenerative sequence, observed in vivo as it developed, provides the first quantitative, dynamic visualization of cortical atrophic rates in normal elderly populations and in those with dementia.

A practical guide to exercise training for heart failure patients

Background: Exercise training has been shown to improve exercise capacity in patients with heart failure. We sought to examine the optimal strategy of exercise training for patients with heart failure. Methods: Review of the published data on the characteristics of the training program, with comparison of physiologic markers of exercise capacity in heart failure patients and healthy individuals and comparison of the change in these characteristics after all exercise training program. Results: Many factors, including the duration, supervision, and venue of exercise training; the volume of working muscle; the delivery mode (eg, continuous vs. intermittent exercise), training intensity; and the concurrent effects of medical treatments may influence the results of exercise training in heart failure. Starting in an individually prescribed and safely monitored hospital-based program, followed by progression to an ongoing and progressive home program of exercise appears to be the best solution to the barriers of anxiety, adherence, and ease of access encountered by the heart failure patient. Conclusions: Various exercise training programs have been shown to improve exercise capacity and symptom status in heart failure, but these improvements may only be preserved with an ongoing maintenance program.

CPR training in households of patients with chest pain

The objectives of this study are to (1) quantify prior cardiopulmonary resuscitation (CPR) training in households of patients presenting to the Emergency Department (ED) with or without chest pain or ischaemic heart disease (IHD); (2) evaluate the willingness of household members to undertake CPR training; and (3) identify potential barriers to the learning and provision of bystander CPR. A cross-sectional study was conducted by surveying patients presenting to the ED of a metropolitan teaching hospital over a 6-month period. Two in five households of patients presenting with chest pain or IHD had prior training in CPR. This was no higher than for households of patients presenting without chest pain or IHD. Just under two in three households of patients presenting with chest pain or IHD were willing to participate in future CPR classes. Potential barriers to learning CPR included lack of information on CPR classes, perceived lack of intellectual and/or physical capability to learn CPR and concern about causing anxiety in the person at risk of cardiac arrest. Potential barriers to CPR provision included an unknown cardiac arrest victim and fear of infection. The ED provides an opportunity for increasing family and community capacity for bystander intervention through referral to appropriate training. (C) 2003 Published by Elsevier Science Ireland Ltd.

Utilisation of outpatient cardiac rehabilitation in Queensland

Objectives: To determine patient participation rates in outpatient cardiac rehabilitation (OCR) programs; ascertain the barriers to participation; and evaluate the quality of OCR programs. Design and setting: Retrospective cohort study of patient separations from selected public and private Queensland hospitals; questionnaire survey of hospitals and all registered OCR programs. Participants: Patients discharged with cardiac diagnoses between 1 July 1999 and 30 June 2000 from 31 hospitals (24 public; 7 private). Main outcome measures: Rates of referral of hospitalised patients to OCR programs; rates of program attendance and completion; barriers to OCR referral and attendance. Results: 15186 patients were discharged with cardiac diagnoses from participating hospitals, of whom 4346 (29%) were referred to an OCR program after discharge, compared with an estimated 59% (8895/15 186) of patients who were eligible for such a program. Proportionately more patients were referred from secondary (38% [1720/4500]) and private (52% [2116/4031]; P < 0.001) hospitals than from tertiary (25% [2626/10 686]) and public (20% [2230/11 155]) hospitals. Patients undergoing coronary revascularisation procedures comprised 35% of discharges, but accounted for 56% of all program attendances. Fewer than a third of all referred patients completed OCR programs, and only 39% of available OCR program places were fully utilised. Catchment populations of programs with unused places had excess coronary mortality. Conclusion: There is significant underutilisation of facility-based OCR programs in Queensland. Procedures are required for identifying and referring eligible patients to existing programs and improving program compliance. Alternative OCR models are also required.

Gene flow in great bustard populations across the Strait of Gibraltar as elucidated from excremental PCR and mtDNA sequencing

Recent advances in molecular biology have made it possible to use the trace amounts of DNA in faeces to non-invasively sample endangered species for genetic studies. Here we use faeces as a source of DNA and mtDNA sequence data to elucidate the relationship among Spanish and Moroccan populations of great bustards. 834 bp of combined control region and cytochrome-b mtDNA fragments revealed four variable sites that defined seven closely related haplotypes in 54 individuals. Morocco was fixed for a single mtDNA haplotype that occurs at moderate frequency (28%) in Spain. We could not differentiate among the sampled Spanish populations of Caceres and Andalucia but these combined populations were differentiated from the Moroccan population. Estimates of gene flow (Nm = 0.82) are consistent with extensive observations on the southern Iberian peninsular indicating that few individuals fly across the Strait of Gibraltar. We demonstrate that both this sea barrier and mountain barriers in Spain limit dispersal among adjacent great bustard populations to a similar extent. The Moroccan population is of high ornithological significance as it holds the only population of great bustards in Africa. This population is critically small and genetic and observational data indicate that it is unlikely to be recolonised via immigration from Spain should it be extirpated. In light of the evidence presented here it deserves the maximum level of protection.

O uso da ren??ncia fiscal na ??rea de museus

O objetivo desse artigo ?? investigar como a ren??ncia fiscal ?? utilizada na ??rea de museus. A fundamenta????o te??rica faz breve apresenta????o da literatura sobre implementa????o e descreve o uso da ren??ncia fiscal na ??rea de museus mediante an??lise de seis vari??veis: incentivos, autonomia, informa????o, apoio institucional, apoio social e etapas e tempo. A metodologia utilizada foi a an??lise documental e entrevistas. A an??lise foi feita com ajuda do programa NVIVO9. As principais conclus??es s??o que embora haja incentivos e autonomia em graus suficientes para permitir boa implementa????o via ren??ncia fiscal, h?? quest??es informacionais e referentes ??s etapas e tempo que dificultam sua implementa????o. Al??m disso, a ren??ncia fiscal ?? concentradora, desigual e apresenta baixa participa????o de empresas do setor privado. Esses problemas parecem diminuir a capacidade de a implementa????o de museus mediante o uso da ren??ncia fiscal alcan??ar os efeitos almejados.

Conselhos locais de saúde : caminhos e (des)caminhos da participação social no Sistema Único de Saúde

A partir da descentralização, novas instâncias de negociação e novas alternativas de ordenamento da estrutura organizacional do Sistema Único de Saúde (SUS) foram criadas. Dentre estas alternativas, podemos citar os conselhos de saúde, importantes canais de participação social. Todavia, frente às limitações destes canais tradicionais de articulação entre Estado e sociedade, destacamos os ideais da gestão participativa e os Conselhos Locais de Saúde (CLS) como alternativa de renovação e criação de instâncias mais flexíveis, porosas e efetivas às complexas demandas sociais. Neste sentido, buscamos analisar o processo de criação e implementação dos CLS do município de Anchieta/ES, a partir de uma abordagem quali-quantativa. Inicialmente, traçamos o perfil socioeconômico e político dos conselheiros eleitos, a partir de um questionário aplicado a uma amostra de 54 conselheiros; dados que foram categorizados e analisados por meio do emprego de estatísticas descritivas. Em seguida, entrevistamos treze conselheiros, de dois conselhos distintos do município, procedendo à análise de conteúdo do material, a partir dos ideais de Bardin (2000). Os resultados demonstraram que os conselhos foram criados a partir da iniciativa da gestão municipal em 2011, e que simplesmente institucionalizá-los como espaço de participação social não foi suficiente para promover a mobilização social e o envolvimento comunitário. Quanto ao perfil dos conselheiros locais, 78% são mulheres, com predominância de raça/cor branca, idade entre os 20 e 39 anos e funcionárias públicas; 57% possuem Ensino Médio e participaram como conselheiro por dois anos, e 60% destes já tiveram outras experiências de participação similares aos CLS. Do material oriundo das entrevistas, emergiram quatro categorias de análise, a saber: 1) Ser ou não ser conselheiro de saúde? Eis a questão!; 2) O não pertencimento e a não-participação; 3) Conselhos Locais de Saúde: elos, meios e mediações; e 4) A exogenia da administração e os obstáculos à participação social. Os entraves ao funcionamento dos conselhos de saúde, mesmo em nível local, ainda são desafios a serem superados, para que estas instâncias sejam mais influentes na gestão pública, conforme os princípios de sua criação. A participação social e a democracia são fundamentais para a construção de políticas de saúde que correspondam às reais demandas da comunidade. Contudo, para garantir a democracia na sociedade não basta promover a descentralização. É necessário que os sujeitos políticos resistam às relações de dominação, opressão e subordinação. Para isso, torna-se imprescindível os programas de educação para cidadania dos sujeitos envolvidos nestes fóruns de participação. O que nos motiva, enfim, é notarmos a existência, entre os conselheiros eleitos, de sujeitos protagonistas de seu próprio devir; sujeitos que atuam como agentes transformadores, motivadores de sonhos e projetos em prol da saúde pública e de sua comunidade.

A formação de educadores e a travessia de cercas invisíveis de acesso/produção de conhecimentos : experiências do MST nas inter-relações com universidades brasileiras /

Este estudo sistematiza e aborda a temática da formação de educadores desenvolvida nas inter-relações entre universidades brasileiras e o Movimento dos Trabalhadores Rurais Sem Terra, especificamente nos cursos de graduação em História na Universidade Federal da Paraíba e de Engenharia Agronômica na Universidade Federal de Sergipe, no período de 2004 a 2008. Tal processo desenvolve-se em um contexto difícil e complexo da luta pela reforma agrária no Brasil, principalmente pelas transformações ocorridas nos últimos anos oriundas da ampliação das lógicas de produção do agronegócio. Esta condição leva o MST a discutir e propor uma nova concepção de reforma agrária que a designa de popular em substituição à proposta de reforma agrária clássica. Por outro lado, apresenta uma visão das universidades brasileiras e dos projetos que são construídos e implementados nos últimos anos, inclusive, observando coincidências com as políticas econômicas gerais para a sociedade. Apresenta uma concepção de formação que vem sendo construída no interior das práticas do MST que também procura as universidades para firmar convênios e desenvolver processos de escolarização/formação de seus militantes educadores. Dentre as dimensões desse processo educativo/formativo, destacam-se: vínculo permanente com os processos orgânicos; a formação como um processo ético, estético, místico que trata das atitudes/comportamentos e como um processo dialógico, crítico e articulado que contempla saberes, experiências, em uma interação que busca superar as monoculturas. Captura por intermédio da pesquisa de campo: estranhamentos, entraves, sentidos da ocupação pedagógica e coletiva, alternativas, legados que permanecem tanto no MST como na universidade e apresenta o resultado do envolvimento e atuação dos egressos de ambos os cursos na atualidade. Aponta também para desafios, possibilidades outras de enfrentar a difícil mas necessária tarefa de formar educadores, militantes capazes de coletivamente levar adiante a luta por um mundo mais justo, solidário e democrático, em que a terra e o conhecimento, juntamente com os demais bens econômicos e culturais sejam profundamente democratizados. Pretende ser uma contribuição para o debate acerca da relevância dessas inter-relações entre universidade e movimentos sociais, em que essas experiências demarcam novas possibilidades de abertura e avanços democráticos e menos elitista da universidade e novos patamares de escolarização/formação para integrantes do Movimento dos Sem Terra.

Silicon in plant disease control

All essential nutrients can affect the incidence and severity of plant diseases. Although silicon (Si) is not considered as an essential nutrient for plants, it stands out for its potential to decrease disease intensity in many crops. The mechanism of Si action in plant resistance is still unclear. Si deposition in plant cell walls raised the hypothesis of a possible physical barrier to pathogen penetration. However, the increased activity of phenolic compounds, polyphenol oxidases and peroxidases in plants treated with Si demonstrates the involvement of this element in the induction of plant defense responses. The studies examined in this review address the role of Si in disease control and the possible mechanisms involved in the mode of Si action in disease resistance in plants.

O aluno com deficiência motora e a acessibilidade arquitectónica no Ensino Básico : um estudo de caso : o concelho de Guimarães

RESUMO:Para que o sucesso educativo se verifique, a escola tem de ajustar a sua prática educativa a todos os alunos, incluindo os que apresentam necessidades educativas especiais (NEE). Portugal dispõe de legislação que assegura o direito à educação e à igualdade de oportunidades, consignados na Constituição da República Portuguesa (artigos 71º, 73º e 74º), em consonância com a Declaração Universal dos Direitos do Homem e na Lei de Bases do Sistema Educativo (artigos 2º, 7º, 17º e 18º). O nosso país subscreveu também a Declaração de Salamanca, a qual reuniu, em 1994, o consenso de noventa e dois governos e de vinte e cinco organizações internacionais, reafirmando o direito à educação para todos. A construção da escola inclusiva passa pela responsabilização da escola por todos os alunos, na perspectiva de educação para todos, exigindo a sua concretização novas estratégias e resposta a novos desafios. Há que alterar práticas para atender à diversidade. Assim, as escolas precisam de estar arquitectonicamente adaptadas às necessidades dos alunos que utilizam a cadeira de rodas como forma de mobilidade, respeitando o direito à diferença e possibilitando, em igualdade de oportunidades, o sucesso escolar e educativo. Levar à prática as medidas previstas na lei portuguesa e implementar, em cada escola, a inclusão do aluno com mobilidade condicionada, implica equipar as escolas com adaptações, meios e recursos educativos facilitadores do seu processo ensino/aprendizagem. A constatação do que efectivamente acontece no terreno educativo no que concerne aos alunos com deficiência motora que usam a cadeira de rodas para se movimentarem assume toda a centralidade da nossa investigação, que tem o cariz de um estudo de caso. Incide sobre a compreensão mais aprofundada de como se processa o acesso arquitectónico nas escolas do Ensino Básico da Zona Norte e mais concretamente do Concelho de Guimarães. Recolhemos dados através de questionários dirigidos aos professores de apoio educativo e coordenadores de escola; ouvimos os alunos com deficiência motora pronunciar-se sobre as dificuldades que sentiam; observámos o seu quotidiano escolar e, finalmente, escutámos as entidades locais, através de uma entrevista realizada à Vereadora da Cultura do Concelho de Guimarães. Os resultados obtidos serão, como foi acordado, divulgados aos intervenientes com responsabilidades directas no campo da educação que se prontificaram a partilhar connosco a sua informação e saber, no sentido de os sensibilizar para a necessidade de rever o aspecto das acessibilidades arquitectónicas nas instituições educativas que servem o seu concelho, pois, como verificámos, muito há ainda a fazer para que o Ensino Básico, universal e obrigatório, se traduza numa igualdade de oportunidades de acesso e sucesso educativo para os alunos que utilizam a cadeira de rodas para se movimentarem no espaço escolar. ABSTRACT: For the educational success of a school it has to adjust its educational practice so that it includes those with special needs. According to the Portuguese law, disabled people have the right to education and equal opportunities, well expressed in the Constitution of the Portuguese Republic (articles 71st, 73rd, and 74th), in consonance with the Universal Declaration of Human Rights, and in the main law the educational system (articles 2nd, 7th, 17th and 18th). Our country has also subscribed the Declaration of Salamanca, which was written in 1994 with the agreement of Representatives from ninety-two governments and twenty-five International Organizations, where was reaffirmed the right of education for all. It is necessary that school increases its responsibility in what concerns the education of all its students. Educating all and every student demands new strategies to face new challenges and so some practices have to be changed to respond to diversity. Schools must be architecturally adapted to give the disabled students, who use a wheel chair, equal opportunities to achieve educational success. Taking the measures foreseen in Portuguese law into practice, and implementing in each school the inclusion of students with conditioned mobility, involves equipping schools with adaptations, equipment and educational resources that facilitate the teaching / learning process. The observation of what actually happens on educative ground, regarding to pupils with motor disabilities who use a wheelchair to move, assumes the centrality of our research, which is a case study. It focuses on the deeper understanding of the way the architectonic access in primary schools of the North, and more specifically the Municipality of Guimarães, is processed. We collected data through questionnaires addressed to educational support teachers and school coordinators; heard students with motor disabilities to comment on the difficulties they felt; observed their daily school life, and finally heard the local authorities, through an interview the Councillor of Culture of the Municipality of Guimarães. As agreed, the results will be communicated to intervenients with direct responsibilities in the field of education who were willing to share with us their information and knowledge in order to raise awareness of the need of looking over the aspect of architectural accessibility in educational institutions that serve their county, because, as noted, much remains to be done so that the basic education, universal and compulsory, will result in equality of educational opportunities in access and success for students who use a wheelchair to move in school space.

Ecological aspects of American cutaneous leishmaniasis: 4. Observations on the endophilic behavior of the sandfly and the vectorial role of Psychodopygus intermedius in the Ribeira Valley region of the S.Paulo State, Brazil

The invasive tendency of Psychodopygus intermedius in the home environment, observed initially by Forattini et al. (1976), has now been confirmed by the demonstration of its high endophilic ability and by the use of human residences for shelter. Populations such as Lutzomyia migonei and Pintomyia fischeri were also present in that environment, though their low densities registered during this investigation could be an indication of their poor ability to overcome the barriers raised by the artificial environment. An objective epidemiological analysis based on the variables here given showed that human infection takes place in the extraforest environment, and the principal vectorial function falls, without doubt, on P. intermedius.

Parental predictors of poor visual outcome with occlusion treatment for unilateral amblyopia

Aim: Visual acuity outcome of amblyopia treatment depends on the compliance. This study aimed to determine parental predictors of poor visual outcome with occlusion treatment in unilateral amblyopia and identify the relationship between occlusion recommendations and the patient's actual dose of occlusion reported by the parents. Methods: This study comprised three phases: refractive adaptation for a period of 18 weeks after spectacle correction; occlusion of 3 to 6 hours per day during a period of 6 months; questionnaire administration and completion by parents. Visual acuity as assessed using the Sheridan-Gardiner singles or Snellen acuity chart was used as a measure of visual outcome. Correlation analysis was used to describe the strength and direction of two variables: prescribed occlusion reported by the doctor and actual dose reported by parents. A logistic binary model was adjusted using the following variables: severity, vulnerability, self-efficacy, behaviour intentions, perceived efficacy and treatment barriers, parents' and childrens' age, and parents' level of education. Results: The study included 100 parents (mean age 38.9 years, SD approx 9.2) of 100 children (mean age 6.3 years, SD approx 2.4) with amblyopia. Twenty-eight percent of children had no improvement in visual acuity. The results showed a positive mild correlation (kappa = 0.54) between the prescribed occlusion and actual dose reported by parents. Three predictors for poor visual outcome with occlusion were identified: parents' level of education (OR = 9.28; 95%CI 1.32-65.41); treatment barriers (OR = 2.75; 95%CI 1.22-6.20); interaction between severity and vulnerability (OR = 3.64; 95%CI 1.21-10.93). Severity (OR = 0.07; 95%CI 0.00-0.72) and vulnerability (OR = 0.06; 95%CI 0.05-0.74) when considered in isolation were identified as protective factors. Conclusions: Parents frequently do not use the correct dosage of occlusion as recommended. Parents' educational level and awareness of treatment barriers were predictors of poor visual outcome. Lower levels of education represented a 9-times higher risk of having a poor visual outcome with occlusion treatment.