Recension av Andkjær, Søren, Bentsen, Peter & Ejbye-Ernst, Niels (2009) ”Friluftsliv: Natur, samfund og pædagogik” : Ambitiöst om friluftsliv i Danmark – kanske alltför ambitiöst...

Friluftsliv uppvisar ett uppsving som för många säkert är oväntat men som nog till stor del är i samklang med den skandinaviska tidsandan. Visserligen är det ett i huvudsak urbant fenomen, de senaste årens fokus på fysisk aktivitet, konditionsträning och fitness, aktiviteter som dessutom ofta äger rum inomhus i speciella kommersiellt drivna träningshallar – där är luften inte fri! – men trenden tar sig också uttryck i löpning eller joggning i urbana parkområden eller i lagom tuktad natur i anslutning till städer. Man kan tänka att steget inte skulle vara långt till verkliga naturupplevelser, och, som sagt, det finns ett uppsving. Det nymornade intresset för autentiska naturupplevelser kan säkert också bottna i en civilisationskritisk trend i det tidiga tredje millenniet, vars beståndsdelar spretar på ett sätt som gör det omöjligt att närmare skärskåda företeelsen i detta sammanhang. Istället konstaterar vi att forskningen varit kvick att fånga upp friluftsintresset, vilket inte minst märks i recensionsfloran på den här webbplatsen, som denna gång utvidgas med en recension av Friluftsliv: Natur, samfund og pædagogik av Peter Bentsen, Søren Andkjær och Niels Ejbye-Ernst (Munksgaard Danmark). Erik Backman, som disputerat i ämnet, har läst och recenserar, och han bjuder redaktörerna på många tips till förbättringar inför nästa upplaga av boken.

Ivar Refsdals skoleatlas. Atlasets innhold og betydning for samtiden

Ivar Refsdal’s school atlases were the most used school atlases in Norway for most of the 20th century. The article shows that his maps where highly appreciated by his contemporary citizens as a new mean for geography education in Norwegian schools. Making maps always means choices of content and mapmaking technique. Therefor the article is discussing some of the map making choices made by Refsdal to display the world for the students.

Om kategorisering og symbolskmagtudøvelse i det sociale arbejde : Myten om de ressourcestærke forældre til børn medneuro-psykiatriske diagnoser

On categorization and symbolic power in social work: The myth of the resourceful parents to children with neuro-psychiatric diagnoses Social workers often use the term resourceful about a certain group of parents to children with neuro-psychiatric diagnoses, e.g. autism spectrum disorder and ADHD. This paper discusses the consequences of this sort of stereotyping/categorization with particular regard to the collaboration between these parents and the social workers as they meet in the social services system, when the parents apply for help for their children. Drawing upon Pierre Bourdieu, it is suggested that the categorization resourceful is not only overly simplistic and a myth, but is straight out misguiding and complicates the interaction – in fact it represents an act of symbolic power. Based upon a six months long sociological field-work study it is shown, that even though social workers seem to acknowledge the difficult and grueling life-situation of the parents, they are first and foremost perceived as resourceful and knowledgeable but hence also as annoying, insufferable, demanding and basically unjustified, even though they have obvious legal rights. Parents and social workers alike described the collaboration as being conflictual and a struggle and the complex power-relations are discussed in the light of Bourdieu.

Validação de metodologia para a determinação simultânea dos antioxidantes sintéticos em óleos vegetais, margarinas e gorduras hidrogenadas por CLAE/UV

The use of antioxidants either to prevent or retard food's lipids oxidation was approved after inquires that verified their security within a daily intake limit. In this study, the methodology was developed and validated for the analysis of synthetic antioxidants: propylgallate (PG), tert-butylhydroquinone (TBHQ), butylhydroxyanisole (BHA), octylgallate (OG) and butylhydroxytoluene (BHT) in vegetables oils, margarine and hydrogenated fats by high performance liquid chromatographic. The methodology revealed itself efficient, with recovery rates above 90% for all antioxidant substances, besides good linearity in concentration range of 40-240 mg kg-1 (r = 0,999), repeatability with CV < 3,7% and limit of quantification 16.55, 10.32, 1.40, 3.76 and 9.30 mg/kg for BHT, BHA, PG, OG and TBHQ, respectively.

Licenças medicas de professores de educação fisica : expressando especificidades em estudo na Rede Municipal de Ensino, Campinas - SP

Universidade Estadual de Campinas . Faculdade de Educação Física

Clinical evaluation of desensitizing treatments for cervical dentin hypersensitivity

The aim of this study was to compare different treatments for dentin hypersensitivity in a 6-month follow-up. One hundred and one teeth exhibiting non carious cervical lesions were selected. The assessment method used to quantify sensitivity was the cold air syringe, recorded by the visual analogue scale (VAS), prior to treatment (baseline), immediately after topical treatment, after 1 week, 1, 3 and 6 months. Teeth were randomly assigned to five groups (n = 20): G1: Gluma Desensitizer (GD); G2: Seal&Protect (SP); G3: Oxa-gel (OG); G4: Fluoride (F); G5: Low intensity laser-LILT (660 nm/3.8 J/cm²/15 mW). Analysis was based on the non-parametric Kruskal-Wallis test that demonstrated statistical differences immediately after the treatment (p = 0.0165). To observe the individual effects of each treatment, data was submitted to Friedman test. It was observed that GD and SP showed immediate effect after application. Reduction in the pain level throughout the six-month follow-up was also observed. In contrast, LILT presented a gradual reduction of hypersensitivity. OG and F showed effects as of the first and third month respectively. It can be concluded that, after the 6-month clinical evaluation, all therapies showed lower VAS sensitivity values compared with baseline, independently of their different modes of action.

A new approach to heart valve tissue engineering: mimicking the heart ventricle with a ventricular assist device in a novel bioreactor

The `biomimetic` approach to tissue engineering usually involves the use of a bioreactor mimicking physiological parameters whilst supplying nutrients to the developing tissue. Here we present a new heart valve bioreactor, having as its centrepiece a ventricular assist device (VAD), which exposes the cell-scaffold constructs to a wider array of mechanical forces. The pump of the VAD has two chambers: a blood and a pneumatic chamber, separated by an elastic membrane. Pulsatile air-pressure is generated by a piston-type actuator and delivered to the pneumatic chamber, ejecting the fluid in the blood chamber. Subsequently, applied vacuum to the pneumatic chamber causes the blood chamber to fill. A mechanical heart valve was placed in the VAD`s inflow position. The tissue engineered (TE) valve was placed in the outflow position. The VAD was coupled in series with a Windkessel compliance chamber, variable throttle and reservoir, connected by silicone tubings. The reservoir sat on an elevated platform, allowing adjustment of ventricular preload between 0 and 11 mmHg. To allow for sterile gaseous exchange between the circuit interior and exterior, a 0.2 mu m filter was placed at the reservoir. Pressure and flow were registered downstream of the TE valve. The circuit was filled with culture medium and fitted in a standard 5% CO(2) incubator set at 37 degrees C. Pressure and flow waveforms were similar to those obtained under physiological conditions for the pulmonary circulation. The `cardiomimetic` approach presented here represents a new perspective to conventional biomimetic approaches in TE, with potential advantages. Copyright (C) 2010 John Wiley & Sons, Ltd.

Unifying principles in terrestrial locomotion: Do hopping Australian marsupials fit in?

Mammalian terrestrial locomotion has many unifying principles. However, the Macropodoidea are a particularly interesting group that exhibit a number of significant deviations from the principles that seem to apply to other mammals. While the properties of materials that comprise the musculoskeletal system of mammals are similar, evidence suggests that tendon properties in macropodoid marsupials may be size or function dependent, in contrast to the situation in placental mammals. Postural differences related to hopping versus running have a dramatic effect on the scaling of the pelvic limb musculoskeletal system. Ratios of muscle fibre to tendon cross-sectional areas for ankle extensors and digital flexors scale with positive allometry in all mammals, but exponents are significantly higher in macropods. Tendon safety factors decline with increasing body mass in mammals, with eutherians at risk of ankle extensor tendon rupture at a body mass of about 150 kg, whereas kangaroos encounter similar problems at a body mass of approximately 35 kg. Tendon strength appears to limit locomotor performance in these animals. Elastic strain energy storage in tendons is mass dependent in all mammals, but exponents are significantly larger in macropodid. Tibial stresses may scale with positive allometry in kangaroos, which result in lower bone safety factors in macropods compared to eutherian mammals.

Effect of a highly concentrated lipopeptide extract of Bacillus subtilis on fungal and bacterial cells

Lipopeptides produced by Bacillus subtilis are known for their high antifungal activity. The aim of this paper is to show that at high concentration they can damage the surface ultra-structure of bacterial cells. A lipopeptide extract containing iturin and surfactin (5 mg mL-1) was prepared after isolation from B. subtilis (strain OG) by solid phase extraction. Analysis by atomic force microscope (AFM) showed that upon evaporation, lipopeptides form large aggregates (0.1-0.2 mu m2) on the substrates silicon and mica. When the same solution is incubated with fungi and bacteria and the system is allowed to evaporate, dramatic changes are observed on the cells. AFM micrographs show disintegration of the hyphae of Phomopsis phaseoli and the cell walls of Xanthomonas campestris and X. axonopodis. Collapses to fungal and bacterial cells may be a result of formation of pores triggered by micelles and lamellar structures, which are formed above the critical micelar concentration of lipopeptides. As observed for P. phaseoli, the process involves binding, solubilization, and formation of novel structures in which cell wall components are solubilized within lipopeptide vesicles. This is the first report presenting evidences that vesicles of uncharged and negatively charged lipopeptides can alter the morphology of gram-negative bacteria.

Recuperação do isopentano da gasolina leve

Mestrado em Engenharia Química

Magnesium, insulin resistance and body composition in healthy postmenopausal women

Objective: This study was conducted to determine the association between magnesium (Mg), body composition and insulin resistance in 136 sedentary postmenopausal women, 50 to 77 years of age. Methods: Diabetics, hypertensives and women on hormonal replacement therapy were excluded and the remaining 74 were divided according to BMI≥25 (obese: OG) and BMI<25 kg/m2 (non-obese: NOG). Nutritional data disclosed that intakes were high for protein and saturated fat, low for carbohydrates, polyunsaturated fat and Mg and normal for the other nutrients, according to recommended dietary allowances (RDA). Mg values in red blood cells (RBC-Mg) and plasma (P-Mg), were determined, as were fasting glucose, and insulin levels, Homeostasis Model Assessment (HOMA), body mass index (BMI), body fat percent (BF %), abdominal fat (AF) and free fat mass (FFM). Results: RBC-Mg values were low in both groups when compared with normal values. There were significant differences in body composition parameters, HOMA and insulin levels, with higher basal insulin levels in OG. RBC-Mg was directly correlated with insulin, HOMA and FFM in both groups, according to Pearson correlations. HOMA in OG was also directly correlated with BMI, FFM and AF. In NOG, HOMA was only correlated with FFM. The low RBC-Mg levels observed were probably due to low Mg intake and to deregulation of factors that control Mg homeostasis during menopause. Conclusions: Both Mg deficit and obesity may independently lead to a higher risk for insulin resistance and cardiovascular disease.

Estudo retrospectivo terapêutico da neurocriptococose em 112 aidéticos ou não

Cento e doze aidéticos ou não com neurocriptococose, admitidos no Hospital Emílio Ribas - São Paulo, Brasil, receberam anfotericina B (AMB) - grupo III ou a associação AMB/ 5 fluorcitosina (5FC): grupos I e II. Testes de Goodman aplicados revelaram: 1. leuco e glicorraquia semelhantes nos três grupos eproteinorraquia inferior a 85mg/dlapós 1, 5g/AMB; 1. a coloração pelo método da tinta da China e a cultura para Cryptococcus neoformans, positivas até l,Og/AMB; 3. hipocalemia na monoterapia, hipo e hipercalemia durante a associação; 4. as reações adversas mais evidentes a > 0,7gAMB/250g 5FC; 5. óbitos (precoce e tardio) frequentes no grupo 1 e nos grupos I e III entre 2,5 a 4,0g de AMB; 6. remissão e morte semelhantes nos grupos. A associação terapêutica iniciale amanutençãopelo AMB conduziram à recaída tardia

Degradação fotocatalítica de petróleo e seus derivados através da utilização de nanopartículas de dióxido de titânio puro e misturado com óxido de grafeno reduzido

Dissertação de mestrado integrado em Engenharia de Materiais

Danmarks fauna; illustrerede haandbøger over den danske dyreverden...

Bd.23 (Fugle: 1.Andefugle og Hønsefugle)

Danmarks fauna; illustrerede haandbøger over den danske dyreverden...

Bd.8 (Guldsmede, Døgnfluer, Slørvinger og Copeognather)