Search results for "MEDIATION"

Evidence for shifts in the structure and abundance of the microbial community in a long-term PCB-contaminated soil under bioremediation.

2011

International audience; Although the impact of bioremediation of PCB-contaminated sites on the indigenous microbial community is a key question for soil restoration, it remains poorly understood. Therefore, a small-scale bioremediation assay made of (a) a biostimulation treatment with carvone, soya lecithin and xylose and (b) two bioaugmentation treatments, one with a TSZ7 mixed culture and another with a Rhodococcus sp. Z6 pure strain was set up. Changes in the structure of the global soil microbial community and in the abundances of different taxonomic phyla were monitored using ribosomal intergenic spacer analysis (RISA) and real-time PCR. After an 18-month treatment, the structure of th…

Biofilms: Applications in Bioremediation

2012

Bioremediation uses microorganisms to remove, detoxify, or immobilize pollutants, and does not require addition of harmful chemicals. Bioremediation is particularly suitable for large areas where contaminant concentrations are relatively low and the hydrology of the soil does not support an aggressive chemical remediation strategy. In the last few years, researchers have described the mechanisms of bioremediation for numerous priority pollutants, including chlorinated hydrocarbons, polyaromatic hydrocarbons, and heavy metals. However, most studies published to date have dealt with planktonic cultures grown under controlled laboratory conditions. Microorganisms in the environment occur mostl…

PREPARATION AND CHARACTERIZATION OF BIOPOLYMERIC POROUS STRUCTURES FOR ADVANCED APPLICATIONS

Porous biopolymers received an increasing academic and industrial interest finding application in several fields such as tissue engineering, bioprocess intensification and waste removal. Tissue engineering combines the knowledge of materials science and bioengineering in order to develop structures able to substitute and restore the normal function of injured or diseased tissues. In this context, polymeric 3D or 2D scaffolds are widely investigated as temporary cell guidance during the tissue restore. Porous biomaterials can offer a versatile and cost effective way for immobilization of filamentous microorganisms in submerged fermentation processes for the production of biologically active …

Evaluation in microcosm of biostimulation and bioaugmentation efficacy on diesel-contaminated soil

2021

Bioremediation is a promising technology for the treatment of hydrocarbon (HC) contaminated soils that is based on the biodegradation capacities of native or introduced microbial populations. Biotractability tests are essential for choosing the optimal bioremediation treatment. For this purpose, multiple microcosm tests, based on biostimulation by landfarming or bioventing and addition of nutrients, were conducted for 120 days on a soil contaminated by diesel, after assessing its intrinsic catabolic potential. An additional bioaugmentation treatment was performed for further 60 days by inoculating selected HC degrading bacteria. HC (C10-C40) concentration was monitored by GC-FID analysis an…

The bioremediation potential of the Priolo Harbour (SR, Italy): isolation, identification and catabolic ability of hydrocarbonoclastic bacteria

2013

The petrochemical site of Priolo-Augusta-Melilli (Sicily, Italy), is a Site of National Interest (SIN) due to high levels of contamination of the coastline and its remediation is urgently needed. Successful remediation strategies relying on the catabolic potential of marine hydrocarbonoclastic bacteria (HCB) have been described. HCB are specialised hydrocarbon (HC)-degrading marine bacteria that use HC almost exclusively as unique carbon and energy source and become dominant in oil-impacted environments. In order to identify the key hydrocarbon degraders and explore the natural bioremediation potential of the contaminated area, sediment cores and sea water were collected inside the Priolo H…

Isolation of Local Shewanella sp. Strain from Vezjolka River at Belgorod District in Belgorod Region, Russia

2019

Challenges and directions for Blockchain technology applied to Demand Response and Vehicle-to-Grid scenarios

2021

Abstract Nowadays, Blockchain is considered a consolidated technology supporting many different applications that integrate well with Artificial Intelligence and the Internet of Things, and supports the creation of Decentralized Autonomous Organizations. Within this wider framework, the energy blockchain applications are now deserving more and more attention, since blockchain architectures, on one hand, provide transparency and solve the information asymmetry problem, on the other, provide disintermediation. In this way, the dream of an energy market closer to end-users becomes a reality, although, still, the regulatory framework is not clear, especially for what concerns the tokenization o…

Scientific communication in museums through presential mediation : Case study le Pavillon des Sciences

2014

In science museums and science centers, "presential" mediation positioning a mediator and the public in the co-presence of objects within a dedicated environment, remains relatively unknown. From a Communication Science perspective, analyzing actual situations transcends the simple provision of information, and focuses on the significance of third party forms within the construction of meaning. Presential communication is transient and centered on the words and gestures of an embodied third party. It provides a greater potential for interactions around practical situations, unlike other media (i.e. an exhibition). The purpose of this research is to question the rightful place of these speci…

Adolescents' school-related self-concept mediates motor skills and psychosocial well-being.

2014

Background The health benefits of exercise participation and physical activity for mental health and psychosocial well-being (PSWB) have been shown in several studies. However, one important background factor, that is, motor skills (MSs), has largely been ignored. In addition, most of the existing research focuses on poor MSs, that is, poor MSs are often connected to poorer PSWB. The mechanism linking MSs and PSWB is unclear. However, a preliminary suggestion has been made that self-worth or self-perceptions might mediate the association between MSs and PSWB. Aim We investigated whether the self-concepts (SCs) of school-related physical education (SCPE), reading (SCR), and mathematics (SCM)…

L'assistente alla comunicazione nella scuola è solo un mediatore linguistico? Problemi, specificità, formazione di una nuova figura professionale.

2009

In seguito all’applicazione della L.104/92 sull’integrazione dei soggetti in situazione di handicap, sono presenti nelle scuole italiane gli “assistenti alla comunicazione” per gli alunni sordi: si tratta di una nuova figura professionale che, all’interno dei servizi educativi, si propone di far da ponte tra sordi e udenti, in quanto esperto delle principali problematiche degli alunni sordi ed esperto nella LIS (Lingua dei Segni Italiana). Ma di che tipo di mediazione si tratta? Quali problemi solleva e quali riflessioni dal punto di vista pedagogico, sociale, linguistico e antropologico? Questi i principali ambiti di riflessione trattati all’interno dell’articolo, in termini problematici e…