Search results for "colonie"
showing 10 items of 58 documents
Life history evolution in social insects: a female perspective
2016
Social insects are known for their unusual life histories with fecund, long-lived queens and sterile, short-lived workers. We review ultimate factors underlying variation in life history strategies in female social insects, whose social life reshapes common trade-offs, such as the one between fecundity and longevity. Interspecific life history variation is associated with colony size, mediated by changes in division of labour and extrinsic mortality. In addition to the ratio of juvenile to adult mortality, social factors such as queen number influence life history trajectories. We discuss two hypotheses explaining why queen fecundity and lifespan is higher in single-queen societies and sugg…
Imaging Bacterial Colonies and Phage-Bacterium Interaction at Sub-Nanometer Resolution Using Helium-Ion Microscopy
2017
Imaging of microbial interactions has so far been based on well‐established electron microscopy methods. This study presents a new way to study bacterial colonies and interactions between bacteria and their viruses, bacteriophages (phages), in situ on agar plates using helium ion microscopy (HIM). In biological imaging, HIM has advantages over traditional scanning electron microscopy with its sub‐nanometer resolution, increased surface sensitivity, and the possibility to image nonconductive samples. Furthermore, by controlling the He beam dose or by using heavier Ne ions, the HIM instrument provides the possibility to mill out material in the samples, allowing for subsurface imaging and in …
Donne altrove. Viaggi, scrittura periodica e identità nell'Ottocento inglese
2015
The book focuses on the usage and publication of travelogues by 19th century women travellers to the colonies of the Empire as tools for spreading a new female identity based on courage, strenght, adventurous attitudes, in brief, based on all those features on which male identity had governed the economic, social, political and cultural areas, and last but not least, suffocated the so called 'fragile' gender. the travelogue, that is the writing of a a non fictional travel experience by women, to and in place such as the colonies, considered as the uncivilised and dangerous side of the Empire gave women the possibility to develop and perform their own selves as authoritative, mobile and powe…
Populations of breeding birds in Byers Peninsula, Livingston Island, South Shetland Islands
2013
Data about breeding populations of birds in the Antarctica are rare and fragmented. Thus, information about the status of the breeding populations of Antarctic birds is crucial given the current scenario of climate change, which is particularly acute in Antarctica. This paper presents new information about the populations of the Antarctic tern Sterna vittata, the kelp gull Larus dominicanus, the southern giant petrel Macronectes giganteus, the Antarctic skua Catharacta antarctica lonnbergi, the chinstrap penguin Pygoscelis antarctica and the gentoo penguin Pygoscelis papua on Byers Peninsula (Livingston Island, South Shetland Islands). We used line transects counts to estimate both densitie…
Changes of species specific cuticular hydrocarbon profiles in the cockroaches Nauphoeta cinerea and Leucophaea maderae reared in heterospecific groups
1997
0013-8703 (Print) 1570-7458 (Online); The cuticular hydrocarbon profiles of the cockroaches Nauphoeta cinerea and Leucophaea maderae are species-specific when maintained in homospecific rearings. When individuals were reared in mixed species colonies, they initially remained in homospecific groups under different shelters. However, after 14 days they formed one heterospecific group with cuticular profiles showing characteristics of both species. When individuals were returned in monospecific rearings, their cuticular hydrocarbon profiles returned to species-specific ones within 3 weeks.
Crisis, convivencia multicultural y "efectos de barrio". El caso de dos barrios de Valencia
2015
La inserción urbana de los inmigrantes se desestabiliza y se pone a prueba con la crisis y las políticas aplicadas. Si bien en Valencia se mantiene una convivencia tranquila, la situación de los servicios públicos aumenta la competencia por recursos escasos entre vecinos de diferentes orígenes. Este texto presenta, en el marco de la ciudad de Valencia, un análisis comparativo de dos barrios receptores de inmigrantes que presentan fuertes contrastes. Por un lado, Russafa un barrio céntrico popular y en proceso de gentrification; por otro, Els Orriols, un barrio periférico obrero. Aún con muchos rasgos comunes, la intensidad del recelo hacia el inmigrante varía de un barrio a otro en función …
Génesis y resolución de conflictos relacionados con la instalación de mezquitas y oratorios: el caso del oratorio de Singuerlín (Santa Coloma de Gram…
2017
Durante los últimos años, se han sucedido, en diferentes territorios del Estado español, los conflictos relacionados con la instalación de mezquitas y oratorios destinados a la práctica del culto musulmán. Este artículo analiza uno de los conflictos más intensos, el desatado en 2004 ante el intento de apertura del oratorio del barrio de Singuerlín en Santa Coloma de Gramenet. Se estudia su raíz, su evolución y el papel que jugó la mediación intercultural en su gestión. A partir de las entrevistas en profundidad efectuadas con los actores implicados, varios años después, se analizan los elementos estructurales del conflicto y se plantea una reflexión acerca de la forma en la que se ha ido co…
Colonies
2015
The entry discusses David Ricardo's three main analytical arguments related to the colonial issue: i) colonies as a source of new fertile land and therefore as a viable solution to the problem of decreasing returns on domestic land; ii) colonies as possible outlet markets able to absorb domestic excess supply; and, finally, iii) the effects of trade restrictions between a colony and its mother country.
Becoming Politically Active: Life Courses and the Formation of Capitals among Young People of Migrant Origin in Finland
2020
This article focuses on the life courses of young people of migrant origin who are active in civic and political fields in Finland. The aim is to analyse, from the micro-level life course perspective, the issues in their lives that have helped them to become active. The article draws on empirical data collected using participatory methods. Four young people of migrant origin participated in the research process and contributed to the data analysis. The theoretical framework consists of Bourdieusian concepts of political habitus and emotional, cultural and social capital. The article shows that participants gained strong emotional capital during their childhood, which laid the groundwork for…
L'Europe et le monde colonial au XVIIIe siècle
2013
Variant les approches et les contextes, les contributions de ce volume étudient les échanges, les rapports de pouvoir et de domination, les médiations et les transformations, les interactions et les transferts culturels entre les États européens et leurs colonies dans les espaces américains et asiatiques à l'âge des Lumières. Le phénomène colonial a, par son caractère protéiforme, permis de croiser les regards dans un esprit d'interdisciplinarité stimulante et féconde comme en témoigne la nouveauté des perspectives développées ici. Autour de l'idée de représentation - définie comme production d'images et de figures aux sens culturel, identitaire, politique et esthétique du terme - sont réun…