Search results for "Transformation"

Historical Ecology, Archaeology and Biocultural Landscapes: Cross-Disciplinary Approaches to the Long Anthropocene

2022

From the local to the global scale, human impact is the real protagonist of the Anthro- pocene. It is impossible to understand ecosystems and the landscape without considering the long-term processes of anthropic activities. The driving forces in landscape change are strongly related to historical dynamics. Changes in political regimes, social structures, eco- nomic modes of production, cultural and religious influences—which all traditionally fall within the domain of the humanities—are phenomena entangled with many ecological and environmental factors. Thus, understanding landscapes in the Anthropocene is impossible without a cross-disciplinary approach.

Human, Technologies and Quality of Education, 2022: Proceedings of Scientific Papers

2022

Inhibition of expression of natural UAG suppressor glutamine tRNA in HIV-infected human H9 cells in vitro by Avarol.

1988

HTLV-IIIB-infected H9 cells are shown to contain a high level of the natural UAG suppressor glutamine tRNA(UmUG Gln); this tRNA has been demonstrated to be required for the synthesis of Moloney murine leukemia virus (Mo-MuLV)-encoded protease. After cultivation of HTLV-IIIB-infected H9 cells with Avarol at a concentration (1 microgram/ml), previously found to protect the cells against the cytopathic effects of HTLV-III, an almost complete inhibition of the synthesis of the tRNA(UmUG Gln) was observed. Moreover, we obtained some evidence that the processing of the HTLV-III precursor protein p53 to p24 is inhibited by Avarol in infected cells, suggesting that the compound interferes with the …

Industrial Hemp Transformation for Composite Applications: Influence of Processing Parameters on the Fibre Properties

2017

The main objective of this collaborative work is to characterize the influence of the processing stages of industrial hemp on the fibre properties. Transformation processes well suited for composite reinforcing textiles are considered. The work focuses on the different stages along the transformation chain of hemp, from the straw retting to the preform manufacturing. The main highlight is the predominant influence of retting on the tensile properties of individual fibres after their mechanical extraction from the stalks. Regarding the secondary processing, different technologies such as spinning, and use of natural binder systems are also proposed to produce yarns and woven fabrics. The eff…

Riemann surfaces and Teichmüller theory

2017

Riemannin pinnat ja Teichmüller-teoriaa. Tämän työn päämääränä on määritellä Riemannin pintojen Teichmüller-avaruudet sekä tutkia niiden geometrisia ominaisuuksia. Ensin työssä kehitetään peiteavaruuksien ja toimintojen teoriaa, jota sovelletaan Möbius-kuvauksista koostuviin ryhmiin. Tämän jälkeen kvasikonformaalikuvaukset määritellään Riemannin pinnoille ja niiden yhteyttä yhdesti yhtenäisten Riemannin avaruuksien kvasikonformikuvauksiin tutkitaan. Näitä tietoja sekä yhdesti yhtenäisten Riemannin pintojen uniformisaatiolausetta hyödyntämällä todistetaan yleisten Riemannin pintojen uniformisaatiolause. Tämä tulos liittää pinnat Möbius-kuvauksien toimintoihin yhdesti yhtenäisillä Riemannin p…

Controversial issues in soft tissue solitary fibrous tumors: A pathological and molecular review

2019

The clinical evolution of solitary fibrous tumor (SFT) remains unclear. Although various clinical, morphological and molecular criteria may indicate increased risk of malignancy, some SFT can still progress despite having a clearly benign appearance. Various risk stratification systems have been proposed, but unfortunately they are not sufficient to precisely determine the malignant potential. In this review, we discuss current knowledge on SFT, focusing on the following controversial issues: (i) the diverse morphologic spectrum: 'the great simulator;' (ii) malignant transformation or dedifferentiation; (iii) current risk stratification systems; and (iv) molecular factors associated with cl…

Idées pour uné echoppe simple

2006

L’article propose une réflexion sur certaines questions récurrentes dans les villes européennes. Qui concerne la rénovation et les transformations des types de centres historiques et de leurs tissues, relatives aux nouvelles habitudes et aux nouvelles façons de vivre et d'habiter dans les villes. Les limes thèmes d'études liés à ces questions, concernent surtout des notions comme celles de comptabilité, d'adaptation, de mesure, de cohabitation, d'identité. Afin de trouver une nouvelle identité aux échoppes sans ignorer leur hérédité, la stratégie adoptée pour répondre aux questions du concours, se fonde essentiellement sur deux principes: 1) la reconnaissance et 1'adoption d'un système préc…

Raman Intensities of the ν1/ν3 Dyad of 28SiH4

1995

0022-2852; The stimulated Raman spectrum of 28SiH4 has been recorded in the ν1/ν3 region between 2182 and 2190 cm(-1). The intensities of the Raman transitions were modeled using a dyad scheme for the two interacting bands with a first-order polarizability expansion. The involved polarizability parameter; have been adjusted to fit about 800 measured intensities of transitions reaching upper states up to J = 18. The resulting standard deviation is about 10%. (C) 1994 Academic Press, Inc.

Signaling molecules: the pathogenic role of the IL-6/STAT-3 trans signaling pathway in intestinal inflammation and in colonic cancer.

2008

Although the precise etiology of inflammatory bowel diseases (IBD) still remains unclear, considerable progress has been made in the identification of novel signal transduction pathways that elucidate the immunopathogenesis involved in the perpetuation of the inflammatory process. As both ulcerative colitis and Crohn's disease are associated with an increased risk for developing colorectal cancer (CRC) and precancerous dysplastic epithelial changes, further studies have concentrated on finding a common signaling pathway that could serve as a mechanistic link between inflammation and associated colonic cancer in IBD. This review presents the current data concerning the pathogenic role of the…

Socs3 induction by PPARγ restrains cancer-promoting inflammation

2013

The presence of proinflammatory cytokines in the tumor microenvironment can support further growth of established cancers. Docosahexaenoic acid (DHA), a peroxisome proliferator-activated receptor-gamma (PPARγ) ligand, has been shown to suppress inflammation and limit tumor progression in vivo. Are the anticancer properties of DHA relying on its ability to prevent inflammation? If so, what are the molecular links between the anti-inflammatory properties of DHA and its anticancer effects? DHA is an n-3 polyinsaturated fatty acid mainly found in fish oil that was shown to contribute to inflammation resolution by preventing the release of proinflammatory mediators in vivo.1 DHA has also been as…