Search results for "197"
showing 10 items of 197 documents
Stabilizing selection on microsatellite allele length at arginine vasopressin 1a receptor and oxytocin receptor loci
2017
The loci arginine vasopressin receptor 1a ( avpr1a ) and oxytocin receptor ( oxtr ) have evolutionarily conserved roles in vertebrate social and sexual behaviour. Allelic variation at a microsatellite locus in the 5′ regulatory region of these genes is associated with fitness in the bank vole Myodes glareolus . Given the low frequency of long and short alleles at these microsatellite loci in wild bank voles, we used breeding trials to determine whether selection acts against long and short alleles. Female bank voles with intermediate length avpr1a alleles had the highest probability of breeding, while male voles whose avpr1a alleles were very different in length had reduced probability of …
Temperature and pH define the realised niche space of arbuscular mycorrhizal fungi
2021
Made available in DSpace on 2021-06-25T11:52:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-03-04 European Regional Development Fund (Centre of Excellence EcolChange) University of Tartu (Estonian Research Council ) Moscow State University Natural Sciences and Engineering Research Council of Canada Discovery Grant Russian Science Foundation Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Swedish Research Council (Vetenskapsradet) The arbuscular mycorrhizal (AM) fungi are a globally distributed group of soil organisms that play critical roles in ecosystem function. However, the ecological niches of individual AM fungal taxa are poorly understood. We collected > 300 s…
Creiximent de la població, mortalitat, natalitat i migracions a les comarques de Tarragona (1700-1860)
2018
Genetic regulation and function of epidermal growth factor receptor signalling in patterning of the embryonicDrosophilabrain
2016
The specification of distinct neural cell types in central nervous system development crucially depends on positional cues conferred to neural stem cells in the neuroectoderm. Here, we investigate the regulation and function of the epidermal growth factor receptor (EGFR) signalling pathway in early development of theDrosophilabrain. We find that localized EGFR signalling in the brain neuroectoderm relies on a neuromere-specific deployment of activating (Spitz, Vein) and inhibiting (Argos) ligands. Activated EGFR controls the spatially restricted expression of all dorsoventral (DV) patterning genes in a gene- and neuromere-specific manner. Further, we reveal a novel role of DV genes—ventral …
Photocrosslinked Dextran-Based Hydrogels as Carrier System for the Cells and Cytokines Induce Bone Regeneration in Critical Size Defects in Mice
2018
Modified biomaterials have for years been the focus of research into establishing new bone substitutes. In our preceding in vitro study employing different cell cultures, we developed chemically and mechanically characterized hydrogels based on photocrosslinkable dextran derivatives and demonstrated their cytocompatibility and their beneficial effects on the proliferation of osteoblasts and endothelial cells. In the present in vivo study, we investigate photocrosslinked dextran-based hydrogels in critical size defects in mice to evaluate their potential as carrier systems for cells or for a specific angiogenesis enhancing cytokine to induce bone formation. We could demonstrate that, with op…
Interactions between the sexual identity of the nervous system and the social environment mediate lifespan in Drosophila melanogaster
2018
Sex differences in lifespan are ubiquitous, but the underlying causal factors remain poorly understood. Inter- and intrasexual social interactions are well known to influence lifespan in many taxa, but it has proved challenging to separate the role of sex-specific behaviours from wider physiological differences between the sexes. To address this problem, we genetically manipulated the sexual identity of the nervous system—and hence sexual behaviour—in Drosophila melanogaster, and measured lifespan under varying social conditions. Consistent with previous studies, masculinization of the nervous system in females induced male-specific courtship behaviour and aggression, while nervous system f…
E. Esposito, Tra filologia e grammatica. Ricerche di papirologia e lessicografia greca
2018
La fortificación del Reino de Valencia en la década de1640 a la luz de la revolución militar
2019
This article proposes a study of the traditions in defensive architecture that concurred in the projects designed by Spanish military engineers for the fortification of the Valencian frontier in 1648 and 1649, in the context of the War of Catalonia (1640-1652). For this it is essential to follow the route of the Valencian adaptations to the military revolution in the matter of fortifications throughout the sixteenth century and compare them with those brought to Valencia in 1641 by the Marquis of Leganes and his engineers from the school of Milan.
« La notion de cultures sportives populaires envisagée au travers du quotidien de sociétés sportives ouvrières (1945-années 1970) »
2005
Käymme yhdessä ain, käymme aina rinnakkain : analyysi kuntaliitosretoriikan käsitteistön muuttumisesta 1960- luvulta 2000-luvulle
2010
Tutkimukseni aiheena on selvittää kuntaliitoskeskusteluun kuuluvien käsitteiden vaikutusta kuntaliitosten toteuttamiseen ja kuinka käsitteet ovat vaikuttaneet poliittiseen diskurssiin ja toimintaan kuntaliitoksissa viimeisen noin 40 vuoden aikana virallisten tahojen ja tekstien kautta. Tutkimuksessa kuntaliitoskeskustelua tarkastellaan 1960-luvulta 2000-luvulle. Varsinainen analyysi jakautuu kolmeen päälukuun. Ensimmäinen käsittää ajanjakson 1960- ja 1970-luvut, toinen 1980-luvun ja osan 1990-luvusta. Kolmannessa luvussa käsitellään edellisten vuosikymmenten keskustelujen vaikutuksia kahden kuntaliitoksen toteutumisen 2000-luvulla. Tutkimuksessa kysytään miten käsitteet ovat muuttuneet tai …