Search results for "Hybri"
showing 10 items of 2146 documents
On the Ultrastructure and Function of Rhogocytes from the Pond Snail Lymnaea stagnalis
2015
Rhogocytes, also termed “pore cells”, occur as solitary or clustered cells in the connective tissue of gastropod molluscs. Rhogocytes possess an enveloping lamina of extracellular matrix and enigmatic extracellular lacunae bridged by cytoplasmic bars that form 20 nm diaphragmatic slits likely to act as a molecular sieve. Recent papers highlight the embryogenesis and ultrastructure of these cells, and their role in heavy metal detoxification. Rhogocytes are the site of hemocyanin or hemoglobin biosynthesis in gastropods. Based on electron microscopy, we recently proposed a possible pathway of hemoglobin exocytosis through the slit apparatus, and provided molecular evidence of a common phylog…
Differential expression of mRNA encoding interleukin-12 p35 and p40 subunitsin situ
1994
Interleukin-12 (IL-12) is a heterodimeric cytokine that plays an important role in the regulation of the immune response. For biological activity the expression of both subunits of IL-12, p35 and p40, is required. Moreover, in the mouse the p40 chain of IL-12 specifically inhibits the effects of the IL-12 heterodimer. In the present study we have analyzed by in situ hybridization the expression of the p35 and p40 mRNA in the spleens of BALB/c and mutant (SCID, nude, beige) mice, unstimulated and after in vivo stimulation with lipopolysaccharide (LPS) and with staphylococcal enterotoxin B (SEB). In unstimulated spleens of BALB/c mice p35 and p40 mRNA were only detectable in a few strongly st…
Software/Hardware Issues in Modelling Insect Brain Architecture
2011
The concept of cognitive abilities is commonly associated to humans and animals like mammals, birds and others. Nevertheless, in the last years several research groups have intensified the studies on insects that posses a much simpler brain structure even if they are able to show interesting memory and learning capabilities. In this paper a survey on some key results obtained in a joint research activity among Engineers and Neurogeneticians is reported. They were focussed toward the design and implementation of a model of the insect brain inspired by the Drosophila melanogaster. Particular attention was paid to the main neural centers the Mushroom Bodies and the Central Complex. Moreover a …
Energy and economic assessment of a small domestic wind turbine in Palermo
2016
The cost effectiveness of micro-wind technology is closely linked to the annual energy production plants, which strongly depends on the wind characteristics and on the morphological properties of the installation site. The power curve of a wind turbine, supplied by manufacturers, characterizes the theoretical energy performance that it should have at a particular site. The behavior of a wind turbine in the field is affected by the speed but also by wind direction variations. At each change of direction and speed, the turbine will try to adapt to new conditions and the phase transition negatively influences the energy production. In order to experimentally confirm what above mentioned, the a…
Cultural translationand migration: the literary cases of Jhumpa Lahiri and Leila Aboulela
2011
This article talks about the link between migration and cultural translation within the framework of contemporary immigrant writing - with particular reference to African and Indian literature.
Min-Type Control Strategy of a DC-DC Synchronous Boost Converter
2019
International audience; This paper presents the analysis and design of a min-type strategy to control a synchronous boost converter in continuous conduction mode. The strategy uses a nonlinear switching surface to establish the change of topology in the converter and is analyzed by means of a sliding-mode control approach. Subsequently, the min-type strategy is modified by a hybrid control formulation, which introduces a hysteresis width and a dwell-time to obtain a finite switching frequency in the start-up and steady-state respectively. The hybrid control formulation is implemented digitally by means of a microprocessor which processes the samples of inductor current and capacitor voltage…
Le Navire Night : le mélange des genres et des arts
2016
The works of Marguerite Duras show visible hybridity, broadly understood as a mixture of genres, correspondence of the arts, or intertextuality. Her texts reflect, par excellence, this tendency because they keep departing from classical forms. Conseąuently, the same text can be interpreted as a novel, screenplay, or film. This transgression seemingly results from the versatility of changing artistic interests of Duras, who, while writing, was fascinated by film-making and all possibilities of experimentation. The transgression is confirmed by a kind of polyphony of voices in her works, which makes them both extremely suggestive and open. A prime example of this technique is Le Navire Night.…
Chromosomal imbalances and their target genes in gastrointestinal stromal tumors
2006
Sesonkiyrittäjyys keskisuomalaisten mikroyrittäjien kokemana
2016
Tässä tutkielmassa selvitetään sesonkiyrittäjyyden ominaispiirteitä sekä verrataan sesonkiyrittäjyyttä yrittämisen muotona muihin yrittäjyyden muotoihin. Tutkimuksen aihe valikoitui tutkijoiden yhteisten mielenkiinnon kohteiden ja omakohtaisen yrittäjyyskokemuksien perusteella. Tutkijat kokivat, ettei sesonkiyrittäjyyttä oltu määritelty tarpeeksi riittävästi aiemmassa yrittäjyystutkimuksessa. Tutkimuksessa esitellään eri yrittäjyyden muotoja ja niitä vertaillaan sesonkiyrittäjyyteen. Tutkimus toteutettiin kvalitatiivisena tutkimuksena, jossa aineisto kerättiin puolistrukturoituna teemahaastatteluina. Tutkimukseen osallistui kuusi (6) yrittäjää, jotka kaikki toimivat Keski-Suomen alueella ja…
Simon Starling, A l’ombre du pin tordu
2018
L’exposition consacrée à l’artiste britannique Simon Starling (1967/) à Sérignan témoigne exemplairement du tournant pris depuis les œuvres des années 1990 et 2000 dont l’une, Shedboatshed, lui a valu le prix Turner en 2005. À vrai dire, l’inflexion de son art vers une interrogation portant non sur l’identité, mais sur la présence était sensible dans une précédente exposition dédoublée entre le Mac/Val et le Parc Saint Léger en 2009. Pratiques de la déconstruction et de la reconstruction, le...