Search results for "Reel"
showing 10 items of 36 documents
Synthesis of Graphene Nanoribbons by Ambient-Pressure Chemical Vapor Deposition and Device Integration
2016
Graphene nanoribbons (GNRs), quasi-one-dimensional graphene strips, have shown great potential for nanoscale electronics, optoelectronics, and photonics. Atomically precise GNRs can be "bottom-up" synthesized by surface-assisted assembly of molecular building blocks under ultra-high-vacuum conditions. However, large-scale and efficient synthesis of such GNRs at low cost remains a significant challenge. Here we report an efficient "bottom-up" chemical vapor deposition (CVD) process for inexpensive and high-throughput growth of structurally defined GNRs with varying structures under ambient-pressure conditions. The high quality of our CVD-grown GNRs is validated by a combination of different …
Sama koulutus - eri urat : tutkimus Mainzin yliopistossa soveltavaa kielitiedettä vuosina 1965-2001 opiskelleiden suomalaisten urakehityksestä palkka…
2008
The focus of the present study is to describe the connection between the Finnish students’ studies of applied linguistics in the Johannes Gutenberg University, Mainz, Germany, and their later working career. One specific field of competence that all of them have is the skill of German language and the knowledge of German culture. The career development has led some students to become entrepreneurs, some to become freelancers, and some to become salaried employees. The description is longitudinal.Becoming socially aware in a foreign culture is a notable feature in the respondents’ inner growth. This growing awareness is linked as a process to the various stages of their life cycles. By using…
Early life stress stimulates hippocampal reelin gene expression in a sex-specific manner: Evidence for corticosterone-mediated action
2010
Early life stress predisposes to the development of psychiatric disorders. In this context the hippocampal formation is of particular interest, because it is affected by stress on the structural and cognitive level. Since little is known how early life stress is translated on the molecular level, we mimicked early life stress in mouse models and analyzed the expression of the glycoprotein Reelin, a master molecule for development and differentiation of the hippocampus. From postnatal day 1 (P1) to P14, mouse pups were subjected to one of the following treatments: nonhandling (NH), handling (H), maternal separation (MS), and early deprivation (ED) followed by immediate (P15) or delayed (P70)…
Reelin expression in human prostate cancer: a marker of tumor aggressiveness based on correlation with grade
2007
Reelin is a glycoprotein that plays a critical role in the regulation of neuronal migration during brain development and, since reelin has a role in the control of cell migration, it might represents an important factor in cancer pathology. In this study, 66 surgical specimens of prostate cancer were analyzed for reelin expression by immunohistochemical method. The reelin expression was correlated with Gleason score and individual Gleason patterns. Reelin expression was found in 39% prostate cancers. Stromal tissues, normal epithelial cells and prostate intraepithelial neoplasia (PIN) of any grade around and distant from cancer were always negative for reelin. Reelin was found in malignant …
Cajal–Retzius cells: Update on structural and functional properties of these mystic neurons that bridged the 20th century
2014
Cajal-Retzius cells (CRc) represent a mostly transient neuronal cell type localized in the uppermost layer of the developing neocortex. The observation that CRc are a major source of the extracellular matrix protein reelin, which is essential for the laminar development of the cerebral cortex, attracted the interest in this unique cell type. In this review we will (i) describe the morphological and molecular properties of neocortical CRc, with a special emphasize on the question which markers can be used to identify CRc, (ii) summarize reports that identified the different developmental origins of CRc, (iii) discuss the fate of CRc, including recent evidence for apoptotic cell death and a p…
Diritti di partecipazione politica e piattaforme digitali, alcune riflessioni
2022
Questo scritto affronta il tema dell’impatto dei social networks sui diritti di partecipazione politica, con riguardo al diritto all’informazione, al diritto di associarsi in partiti, al diritto di voto come esito di campagne elettorali digitali. Il mutamento della comunicazione politica e del dibattito pubblico refluisce sulla correttezza dei processi democratici; ciò pone l’esigenza della regolazione dei social networks quale spazio mediatico utilizzato dai soggetti politici (individui od organizzazioni) per influenzare la formazione dell’opinione pubblica e costruire il consenso a proprio favore, soprattutto nell’ambito delle campagne elettorali. L’articolo si sofferma, dunque, sui probl…
Reelin and CXCL12 regulate distinct migratory behaviors during the development of the dopaminergic system.
2014
The proper functioning of the dopaminergic system requires the coordinated formation of projections extending from dopaminergic neurons in the substantia nigra (SN), ventral tegmental area (VTA) and retrorubral field to a wide array of forebrain targets including the striatum, nucleus accumbens and prefrontal cortex. The mechanisms controlling the assembly of these distinct dopaminergic cell clusters are not well understood. Here, we have investigated in detail the migratory behavior of dopaminergic neurons giving rise to either the SN or the medial VTA using genetic inducible fate mapping, ultramicroscopy, time-lapse imaging, slice culture and analysis of mouse mutants. We demonstrate that…
Soil quality indicators as affected by a long term barley-maize and maize cropping systems
2011
Most soil studies aim a better characterization of the system through indicators. In the present study nematofauna and soil structure were chosen as indicators to be assess soil health as related to agricultural practices. The field research was carried out on the two fodder cropping systems continuous maize (CM, Zea mays L.) and a 3-year rotation of silage-maize – silage-barley (Hordeum vulgare L.) with Italian ryegrass (R3) and grain-maize maintained in these conditions for 18 years. Each crop system was submitted to two management options: 1) the high input level (H), done as a conventional tillage, 2) the low input level (L), where the tillage was replaced by harrowing and the…
La Dernière Cène du réfectoire du monastère de Santa Cruz de Coimbra par Maître Hodart : considérations préalables sur la place d’une œuvre singulière
2018
Cet article a pour but de traiter d’une question qui hante l’historiographie de la Renaissance portugaise depuis longtemps. Le magnifique groupe de terre cuite grandeur nature représentant la Cène dans le réfectoire du monastère de Santa Cruz de Coimbra est aujourd’hui l’un des chefs-d’oeuvre du musée Machado de Castro de la ville, ainsi qu’encore une énigme. L’identité et le parcours du mystérieux maître Hodart, auquel quelques maigres sources permettent d’attribuer le groupe, restent l’objet de nombreuses spéculations. Ce texte se propose donc de situer cette oeuvre emblématique dans le concert plus large des arts européens du premier quart du XVIe siècle et de reconnaître des liens possi…
L'image documentaire au temps du franquisme
1998
Quelle que soit l'indifférence de NO-DO a l'égard de l'actualité nationale et internationale, il n'en reste pas moins pertinent de déterminer le rôle que les autorités du régime lui conféraient en ce qui concerne la création d'une image (peu importe qu'elle eût été presque intemporelle) de la vie idéale du pays, en accord avec l'idéologie franquiste. 11 n'est pas dû au hasard si NO-DO contribue à bâtir pendant ces années une nouvelle image de Franco et, par là, une nouvelle définition implicite de son régime. Aussi paradoxal que cela puisse paraître, la présence matérielle de Franco en tant que chef d'état augmente â l'intérieur des actualités. Cependant, elle manifeste un virage consistant…