Search results for "MOBILIZATION"
showing 10 items of 142 documents
Improvement of actinorhodin production yield in Streptomyces coelicolor by immobilized-cell cultivations by using PCL- and PLA-based films
2016
Actinomycetes are Gram-positive bacteria producing most of naturally occurring antibiotics (Donadio et al., 2010). At industrial level, antibiotics are produced by submerged fermentations where the actinomycete filamentous morphology negatively affects bioproductivity (van Dissel et al., 2014). Microporous membranes for bacterial cell-immobilization were already proven increasing bioproductivity in Streptomyces coelicolor, that is a model actinomycete producing the blue pigmented actinorhodin (ACT) antibiotic (Scaffaro et al., 2016). To develop an immobilized-cell bioreactor system, different kinds of polycaprolactone (PCL) and polylactic acid (PLA) films were produced by an electrospinning…
Actinorhodin production intensification by nanofibrous membranes in Streptomyces coelicolor cultures
2016
In this work, electrospun polycaprolactone (PCL) and polylactic acid (PLA) membranes, subjected or not to O2-plasma treatment, werwe used as support for cell-immobilization in S. coelicolor immobilized-cells created a compact biofilm on both kinds of membranes.
Movimento femminile e democrazia in Sicilia: la Consulta regionale femminile del 1977
2021
This chapter aims to reconstruct the history of the political mobilization of Italian women. It focuses on the movement that from the early Seventies involved women active in Sicilian women's associations, political parties, and trade unions and, with them, militants who did not belong to any organization. In particular, the essay analyses the role played by the Italian Communist Party in introducing Italian women to the political arena of democratic Italy. In Sicily, one of the results of this mass mobilization and political participation was the political institutionalization into the Sicilian Regional Women's Council, established on 7 May 1977 with regional law number 272. In this contex…
“Mega-Sports Events, Gentrification and Social Mobilization in Rio de Janeiro” - Experiences from Metrô Mangueira
2017
Master's thesis Development management UT503 - University of Agder 2017 In order to promote gentrification of the city of Rio de Janeiro, the Brazilian government and the municipality of Rio de Janeiro have actively used Mega-Sports Events (MSE) in urban planning. Examples are tax cuts and the legalization of various measures for large-scale urban programs, to prepare the city for hosting these prestigious events. Whilst trying to fulfil the obligations from MSEs, the host city denies its citizens access to democratic participation and thereby their right to the city. The promises made to the international sportive federations regarding upgraded infrastructure, sportive arenas, media covera…
An analysis of the activity in the Polish internet sphere from the angle of social mobilization to perform acts of violence. A case study of the immi…
2019
This article is a case study of the process of mobilization to violence on the internet. The goal of this paper was to identify a select number of factors within the narrative on the topic of modern immigration that can be found on the internet and analyze them using the theoretical constructs that can be found in the literature on this subject. The scientists that study genocide have identified several factors commonly found in historically documented events that must be present in order for genocide to occur. In this paper the author will refer to works of scientists such as Helen Fein, Manus I. Midlarsky, Lech M. Nijakowski. The author of the paper analyzed the content published on the i…
Different Type Clay Amendments for Lead Immobilization in Contaminated Soils
2014
Contamination with lead in soil is a crucial problem in industrial and military sites. Immobilization of lead by natural and modified clay as soil amendment can be an effective solution to this problem. Quaternary and Devonian clays were chosen for modification with NaCl, CaCl2, FeOOH and Ca10(PO4)6(OH)2 in different proportions of Ca/P equimolar ratio to test and compare immobilization efficiency of lead (II) on raw and modified clays by using a batch leaching test. The aim of the study is to compare different types of raw and modified clays as soil amendments by lead immobilization properties.
Immobilised Humic Substances as Low-Cost Sorbents for Emerging Contaminants
2021
Environmental pollution with contaminants of emerging concern (CECs) is a worldwide problem that is receiving increasing attention. Although these substances have been released in the aquatic environment for a long time, wastewater treatment plants are still incapable of removing emerging contaminants completely. Consequently, trace metals, metalloids and pharmaceuticals, as well as surfactant leftovers, are often found in environmental samples. Environmentally friendly and cost-effective sorbents such as humic substances can be used for purification if their sorption properties are increased by immobilization. To our knowledge, immobilized humic substances have not been widely studied as s…
IMPROVED PRODUCTION OF THE ANTIBIOTIC ACTINORHODIN IN STREPTOMYCES COELICOLOR IMMOBILIZED-MYCELIAL CELL CULTIVATIONS
2017
Objectives i) Evaluation of ACT production in Streptomyces coelicolor M145 mycelial cells immobilized on polycaprolactone (PCL) and polylactic acid (PLA) nanofiber membranes, modified or not by an O2- plasma treatment. ii) Identification of gene products associated with the improvement of ACT production.
Porewater pressure control on subglacial soft sediment remobilization and tunnel valley formation: A case study from the Alnif tunnel valley (Morocco)
2014
25 pages; International audience; In the eastern part of the Moroccan Anti-Atlas Mountains, the Alnif area exposes a buried Ordovician glacial tunnel valley (5 km wide, 180 m deep) cut into preglacial marine sediments. The preglacial sedimentary sequence, deposited in a marine environment, is characterized by a typical "layer-cake" configuration of permeable (sand) and impermeable (clays and early-cemented sandstones) layers. At the base of the tunnel valley, a discontinuous and fan-shaped glacial conglomeratic unit 10 to 15 m thick occurs, erosively deposited over preglacial marine sediments. The conglomeratic unit is composed of preglacial intraclasts embedded within a sandy matrix. Both …
Matryoshka enzyme encapsulation: Development of zymoactive hydrogel particles with efficient lactose hydrolysis capability.
2019
This report describes an efficient procedure for enzyme encapsulation and its application for the hydrolysis of lactose. The enzymatic material that has been developed consists of hydrogel particles (ca. 3–4 mm of diameter) composed of either alginate or an alginate-agarose combination, in which bacterial cells loaded with a thermostable β-galactosidase are embedded. The cells were rendered fully permeable to the substrate, either chromogenic p-nitrophenyl galactose or lactose, by thermal treatment at 75 °C. Hydrogel particles made of a mixture of alginate and agarose displayed high catalytic activity (i.e. 1 g of beads hydrolyze the lactose equivalent of 100 mL of milk in 15 min) and therm…