594 research outputs found
Ethopoetische Funktion des Stils um 1750. Rhetorik (Gottsched) â Poetik (Breitinger) â Ăsthetik (Baumgarten)
Um 1750 gelangt die ethopoetische Funktion des Stils in den Fokus verschiedener Autoren, welche die Kategorie in Rhetorik, Poetik und Ăsthetik neu vermessen. Johann Christoph Gottscheds Rhetorik weiĂ den Stil als Ăbung zu nutzen, um Empfinden und Denken der SchuÌler zu trainieren. Der Charakter der SchuÌler resultiert somit aus einem Ausbildungsprogramm, das vom Spracherwerb bis zum Verfassen von Reden reicht. Johann Jacob Breitinger erlĂ€utert in seiner Poetik, wie die Sprache auf einer semiotischen Ebene auf verschiedene Arten Kraft ausuÌbt, um das GemuÌt zu bewegen und damit sinnliche Erkenntnisse zu generieren. Stil als Ăbung und Stil als Darstellungsverfahren vereint Alexander Gottlieb Baumgarten in seiner Wissenschaft der sinnlichen Erkenntnis, die sowohl eine Vervollkommnung des sinnlichen Erkennens anstrebt als auch die Verfahren beleuchtet, die fuÌr die Darstellung der sinnlichen Erkenntnis verantwortlich sind
E2E Program
United States Department of Homeland Security
University of Alaska Anchorag
La cuestiĂłn del tropo en los relieves de guerra del Reino Antiguo
This paper presents a discussion of the repeated topos of the Libyan enemy in Old Kingdom royal depictions. The presence of this one common enemy ofEgypt within repeated written and pictorial sources from the Old Kingdom parallels indicates a nationalist feeling, one connected to the self-identity of theEgyptians, can be traced to a very early time in history. The fact that this âthemeâ persists throughout Egyptian history is of great importance. Libyan-Egyptianrelations must be seen as not merely hostile in attitude from a primordial era, but also as a theme that could be re-used over and over to magnify the kingsâmilitary performances.Este trabajo presenta una discusiĂłn sobre el repetido topos del enemigo libio en las representaciones reales del Reino Antiguo. La presencia recurrente de este enemigo comĂșn de Egipto en fuentes pictĂłricas y escritas equivalentes del Reino Antiguo, indica que un sentimiento nacionalista conectado con la autoidentificaciĂłn de los egipcios puede ser rastreado hasta una Ă©poca muy temprana de la historia. De gran importancia es el hecho de que este âtemaâ persiste a lo largo de la historia egipcia. Las relaciones entre egipcios y libios deben ser vistas no solamente como actitudes hostiles desde una Ă©poca pri- mordial sino tambiĂ©n como un tema que podĂa ser re una y otra vez para magnificar las actividades militares de los reyes
Clinical presentation of celiac disease and the diagnostic accuracy of serologic markers in children
There has been growing recognition of a changing clinical presentation of celiac disease (CD), with the manifestation of milder symptoms. Serologic testing is widely used to screen patients with suspected CD and populations at risk. The aim of this retrospective analysis was to evaluate the clinical presentation of CD in childhood, assess the diagnostic value of serologic tests, and investigate the impact of IgA deficiency on diagnostic accuracy. We evaluated 206 consecutive children with suspected CD on the basis of clinical symptoms and positive serology results. Ninety-four (46%) had biopsy-proven CD. The median age at diagnosis of CD was 6.8years; 15% of the children were <2years of age. There was a higher incidence of CD in girls (pâ=â0.003). Iron deficiency and intestinal complaints were more frequent in children with CD than those without CD (61% vs. 33%, pâ=â0.0001 and 71% vs. 55%, pâ=â0.02, respectively), while failure to thrive was less common (35% vs. 53%, pâ=â0.02). The sensitivity of IgA tissue transglutaminase (IgA-tTG) was 0.98 when including all children and 1.00 after excluding children with selective IgA deficiency. The specificity of IgA-tTG was 0.73 using the recommended cut-off value of 20IU, and this improved to 0.94 when using a higher cut-off value of 100IU. All children with CD and relative IgA deficiency (IgA levels that are measurable but below the age reference [nâ=â8]) had elevated IgA-tTG. In conclusion, CD is frequently diagnosed in school-age children with relatively mild symptoms. The absence of intestinal symptoms does not preclude the diagnosis of CD; many children with CD do not report intestinal symptoms. While the sensitivity of IgA-tTG is excellent, its specificity is insufficient for the diagnostic confirmation of a disease requiring life-long dietary restrictions. Children with negative IgA-tTG and decreased but measurable IgA values are unlikely to have C
The adaptive potential of a plant pathogenic fungus, Rhizoctonia solani AG-3, under heat and fungicide stress
The ability to improve fitness via adaptive evolution may be affected by environmental change. We tested this hypothesis in an in vitro experiment with the plant pathogen Rhizoctonia solani Anastomosis Group 3 (AG-3), assessing genetic and environmental variances under two temperatures (optimal and higher than optimal) and three fungicide concentrations (no fungicide, low and high concentration of a copper-based fungicide). We measured the mean daily growth rate, the coefficient of variation for genotypic (I G) and environmental variance (I E) in growth, and broad-sense heritability in growth. Both higher temperature and increased fungicide concentration caused a decline in growth, confirming their potential as stressors for the pathogen. All types of standardized variances in growthâI G, phenotypic variance, and I E as a trendâincreased with elevated stress. However, heritability was not significantly higher under enhanced stress because the increase in I G was counterbalanced by somewhat increased I E. The results illustrate that predictions for adaptation under environmental stress may depend on the type of short-term evolvability measure. Because mycelial growth is linked to fitness, I G reflects short-term evolvability better than heritability, and it indicates that the evolutionary potential of R. solani is positively affected by stres
Snowier Winters Extend Autumn Availability of High-quality Forage for Caribou in Arctic Alaska
Caribou (Rangifer tarandus) rely on the short Arctic growing season to restore body condition, support the demands of lactation, and prepare for the long arctic winter, making them susceptible to even small changes in forage availability or quality. Body condition in the summer and autumn is linked to winter survival rates and fecundity in cows, critical factors in the productivity of caribou populations. Climate change predictions of warmer and wetter northern winters suggest increased snowfall over Alaskaâs North Slope, which has recently been verified between 1995 and 2017. However, a comprehensive analysis of how deeper snow will affect caribou forage quality is absent across Alaska. In this study, we quantify how snow depth alters the quality and seasonality of caribou forage using a long-term (24 yr) International Tundra Experiment snow depth manipulation to evaluate how winter climate change scenarios may affect tussock tundra systems in northern Alaska. Deeper snow in prior winters leads to increases in growing season leaf N and digestible protein (DP) in deciduous shrubs (and Betula spp.) and graminoids (Carex spp. and Eriophorum spp.), but not evergreen dwarf shrubs (Rhododendron spp. and Vaccinium spp.). Dry matter digestibility varied among species with small differences (\u3c5%) associated with snow depth. Most striking was the discovery that deeper snow in the prior winter increased the duration of DP levels above the minimum threshold for protein gain in caribou by as much as 25 d in Salix pulchra and 6â9 d in Betula nana and Carex bigelowii in late summer and early autumn. Consequently, deeper winter snow may provide an extended window of opportunity for foraging and the accumulation of lean body mass and fat reserves which promote winter survival and successful calving the following spring and potentially improve the productivity of caribou in northern Alaska
Molecular and Histological Profiling Reveals an Innate-Shaped Immune Microenvironment in Solitary Juvenile Polyps.
INTRODUCTION
Solitary juvenile polyps (JP) are characterized by a benign disease course with low recurrence rate but present with signs of intestinal inflammation. To better understand the underlying pathogenesis, we performed histological and molecular evaluation targeting distinct immune mechanisms.
METHODS
Pediatric patients with JP (n = 12), with treatment-naĂŻve inflammatory bowel disease (IBD; [n = 41]) as inflammatory control, and non-IBD controls (n = 14) were investigated. For a comparative analysis of infiltrating immune cells, a next-generation tissue microarray of biopsies was assembled, immunostained, and scored. Targeted transcriptional profiling was performed using a customized immunology panel.
RESULTS
In JP, a predominant accumulation of neutrophils and eosinophils was observed. RNA expression profiles revealed increased levels of CXCL8, CXCL5, and CCL11 transcripts in JP, indicating an enhanced recruitment of neutrophils and eosinophils. Moreover, messenger RNA levels of the proinflammatory cytokine IL1b and the inflammation-amplifying receptor TREM1 were higher in JP, whereas we could not find signs of a functionally polarized Tcell response in JP when compared with IBD.
DISCUSSION
Patients with JP and patients with treatment-naĂŻve IBD have distinct cell infiltrates during active disease. The ample presence of eosinophils in JP supports neutrophil accumulation, which is responsible for the elevated release of calprotectin. Intriguingly, however, we were not able to identify a functionally polarized T-cell response in JP, which indicates that during the acute onset of inflammation in JP, a potent adaptive immune memory is not established. This may explain the low reoccurrence rate of JP
Crohn's disease: loss of tolerance or a disorder of autophagy?
Crohn's disease (CD) is characterized by a breakdown of the intestinal epithelial barrier function leading to an uncontrolled immune response to bacterial antigens. Available data demonstrate that appropriate response and early host defense against invading bacteria are crucial to maintain tolerance towards commensal bacteria. When the mechanisms of early removal of invading bacteria are disturbed, a loss of tolerance and a full-blown adaptive immune reaction, which is mounted against the usually harmless commensal flora, are induced. Dysfunction of autophagy caused by genetic variations within CD susceptibility genes, such as ATG16L1 and IRGM, results in defective handling of intracellular and invading bacteria and causes prolonged survival and defective clearance of those microbes. Dysfunction of ATG16L1 and IRGM has also been shown to cause aberrant Paneth cell function and uncontrolled secretion of proinflammatory cytokines finally resulting in increased susceptibility to bacterial infection and the onset of colitis. Interestingly, autophagy can also be regulated by other CD susceptibility genes, such as NOD2 (nucleotide oligomerization domain 2) or PTPN2 (protein tyrosine phosphatase nonreceptor type 2) and the presence of the CD-associated variations within these genes results in similar effects. Taken together, more and more evidence suggests a close functional correlation between loss of tolerance and defective autophagy in CD patients. Therefore, most likely, the onset of CD is triggered by both a loss of tolerance as well as a dysfunction of autophagy, which finally results in the onset of chronic intestinal inflammation
Growth of Infants Fed Formula with Evolving Nutrition Composition: A Single-Arm Non-Inferiority Study.
The nutritional composition of human milk evolves over the course of lactation, to match the changing needs of infants. This single-arm, non-inferiority study evaluated growth against the WHO standards in the first year of life, in infants consecutively fed four age-based formulas with compositions tailored to infants' nutritional needs during the 1st, 2nd, 3rd-6th, and 7th-12th months of age. Healthy full-term formula-fed infants (n = 32) were enrolled at â€14 days of age and exclusively fed study formulas from enrollment, to the age of four months. Powdered study formulas were provided in single-serving capsules that were reconstituted using a dedicated automated preparation system, to ensure precise, hygienic preparation. The primary outcome was the weight-for-age z-score (WAZ) at the age of four months (vs. non-inferiority margin of -0.5 SD). Mean (95% CI) z-scores for the WAZ (0.12 (-0.15, 0.39)), as well as for the length-for-age (0.05 (-0.19, 0.30)), weight-for-length (0.16 (-0.16, 0.48)), BMI-for-age (0.11 (-0.20, 0.43)), and head circumferencefor-age (0.41 (0.16, 0.65)) at the age of four months, were non-inferior. Throughout the study, anthropometric z-scores tracked closely against the WHO standards (within ±1 SD). In sum, a fourstage, age-based infant formula system with nutritional compositions tailored to infants' evolving needs, supports healthy growth consistent with WHO standards, for the first year of life
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