Search results for "laboratory"

Enterobacter cloacae administration induces hepatic damage and subcutaneous fat accumulation in high-fat diet fed mice.

2018

Accumulating evidence indicates that gut microbiota plays a significant role in obesity, insulin resistance and associated liver disorders. Family Enterobacteriaceae and especially Enterobacter cloacae strain B29 have been previously linked to obesity and hepatic damage. The underlying mechanisms, however, remain unclear. Therefore, we comprehensively examined the effects of E. cloacae subsp. cloacae (ATCC® 13047™) administration on host metabolism of mice fed with high-fat diet (HFD). C57BL/6N mice were randomly divided into HFD control, chow control, and E. cloacae treatment groups. The E. cloacae treatment group received live bacterial cells in PBS intragastrically twice a week, every ot…

Experimental investigation on the role of vegetation on sediment transport mechanism: review of recent results

2012

Data from: Sex-specific effects of natural and sexual selection on the evolution of life span and ageing in Drosophila simulans

2015

1. Variation in the strength of age-dependent natural selection shapes differences in ageing rates across species and populations. Likewise, sexual selection can promote divergent patterns of senescence across the sexes. However, the effects of these processes on the evolution of ageing have largely been considered independently, and interactions between them are poorly understood. 2. We use experimental evolution to investigate how natural and sexual selection affect life span and ageing in Drosophila simulans. 3. Replicate populations were evolved under lifetime monogamy (relaxed sexual selection) or lifetime polyandry (elevated sexual selection) and at one of two temperatures, 25 °C (rel…

Inquiry-Based Laboratory e formazione dei futuri docenti di sostegno. Apprendere per competenze nel laboratorio di “Didattica speciale: codici del li…

2022

L’Unione Europea ha più volte sottolineato l’urgenza di un rinnovamento nell’educazione e sollecitato gli Stati membri ad intervenire con iniziative atte a migliorare i sistemi di formazione degli insegnanti (Pascucci, 2014). In tale contesto gli Atenei, in accordo ai decreti ministeriali, predispongono i relativi percorsi formativi, diversificati per gradi di istruzione e introducendo l’obbligatorietà di frequenza dei laboratori. Il termine stesso laboratorio rimanda al concetto di “lavoro attivo”, un luogo dove è possibile mantenere e legittimare il divenire della professionalizzazione docente. Il laboratorio, dunque, promuove nello studente un apprendimento significativo ovvero in grado …

Collaborative Design Rational and Social Creativity in Cultures of Participation

2011

The rise in social computing has facilitated a shift from consumer cultures, focused on producing finished media to be consumed passively, to cultures of participation, where people can access the means to participate actively in personally meaningful problems. These developments represent unique and fundamental opportunities and challenges for rethinking and reinventing design rationale and creativity, as people acclimate to taking part in computer-mediated conversations of issues and their solutions. Grounded in our long-term research exploring these topics, this paper articulates arguments, describes and discusses conceptual frameworks and system developments (in the context of three cas…

Student experiences of project-based learning in an analytical chemistry laboratory course in higher education

2020

Abstract This study describes students’ experiences in project-based learning (PjBL) incorporated as part of a revised undergraduate analytical chemistry laboratory course. We examined which phases were the easiest as well as the most challenging and what student skills developed during the research project. The research data were collected between 2016 and 2018 via two questionnaires. They were analyzed both quantitatively and qualitatively. One questionnaire focused on the whole course (in 2016–2018, n = 127) of which only the answers on the research project questions were analyzed. The other questionnaire focused on only the research project (in 2018, n = 42). Based on the results of our…

Jerzego Grotowskiego podróż Do wnętrza, czyli jak w PRL-u stworzyć teatralne laboratorium (i przetrwać)

2020

The purpose of my research is to demonstrate how and why Grotowski was involved with the politics and political system in Communist Poland – not only to what extent he was compromised but to what extent he compromised the authorities. I am especially concerned with determining the levels of risk, professional and personal, to which Grotowski was exposed, and what extent the Polish Secret Police and Communist Party were involved. Many people has been writing and a lot has been written on Grotowski’s theatre in general, but not about Grotowski’s theatre as an institution. The author has discovered some rare and precious materials. These are some interesting secret police files discovered in I…

Confocal laser scanning microscopy for the study of the morphological changes of the postextraction sites

2012

A better understanding of the remodeling process of postextraction sockets is essential in dental treatment planning. The aim of this study was to evaluate whether confocal laser scanning microscopy (CLSM) can be applied to imaging contour changes of postextraction sites, as well as to its quantification with image analysis of obtained three-dimensional images. This work describes a new application of the CLSM technique. The system used was the OLS3100-USS, LEXT model (Olympus((R))). CLSM was used for the surface analysis of the extraction site. The measurements taken with CLSM were: (1) mesio-distal distance, (2) alveolar ridge thickness, and (3) vestibular and lingual alveolar ridge heigh…

Data from: Parasitic wasp-associated symbiont affects plant-mediated species interactions between herbivores

2018

Microbial mutualistic symbiosis is increasingly recognised as a hidden driving force in the ecology of plant–insect interactions. Although plant‐associated and herbivore‐associated symbionts clearly affect interactions between plants and herbivores, the effects of symbionts associated with higher trophic levels has been largely overlooked. At the third‐trophic level, parasitic wasps are a common group of insects that can inject symbiotic viruses (polydnaviruses) and venom into their herbivorous hosts to support parasitoid offspring development. Here, we show that such third‐trophic level symbionts act in combination with venom to affect plant‐mediated interactions by reducing colonisation o…

Heterozygote advantage and pleiotropy contribute to intraspecific color trait variability

2022

The persistence of intrapopulation phenotypic variation typically requires some form of balancing selection because drift and directional selection eventually erode genetic variation. Heterozygote advantage remains a classic explanation for the maintenance of genetic variation in the face of selection. However, examples of heterozygote advantage, other than those associated with disease resistance, are rather uncommon. Across most of its distribution, males of the aposematic moth Arctia plantaginis have two hindwing phenotypes determined by a heritable one locus-two allele polymorphism (genotypes: WW/Wy = white morph, yy = yellow morph). Using genotyped moths, we show that the presence of o…