Search results for " degradi"
showing 10 items of 12 documents
Isolation and characterization of hydrocarbonoclastic bacteria from Algerian coast
2017
Backgrounds The contamination of marine environments by hydrocarbons represents a global concern with consequences on ecosystems and human health. The removal of HC by physical and/or chemical methods is expensive and disrespectful of the environment. The use of HC degrading bacteria is a good alternative for environmental remediation (bioremediation). Objectives The Algerian coastline is exposed to several types of pollutions, including hydrocarbons. The aim was to explore the bioremediation potential of its contaminated harbors for the first time. Methods To identify the hydrocarbon degrading bacteria seawater samples were collected in Sidi fredj harbor (Algeria) and used to enrichment cu…
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…
Defective insulin secretory response to intravenous glucose in C57Bl/6J compared to C57Bl/6N mice
2014
Objective: The C57Bl/6J (Bl/6J) mouse is the most widely used strain in metabolic research. This strain carries a mutation in nicotinamide nucleotide transhydrogenase (Nnt), a mitochondrial enzyme involved in NADPH production, which has been suggested to lead to glucose intolerance and beta-cell dysfunction. However, recent reports comparing Bl/6J to Bl/6N (carrying the wild-type Nnt allele) under normal diet have led to conflicting results using glucose tolerance tests. Thus, we assessed glucose-stimulated insulin secretion (GSIS), insulin sensitivity, clearance and central glucose-induced insulin secretion in Bl/6J and N mice using gold-standard methodologies. Methods: GSIS was measured u…
Life Imprisonment Without Prospect of Release: Comparative Remarks from a Human-Rights Perspective
2019
Life imprisonment without prospect of release is a penalty experiencing remarkable success today, especially in Europe. However, certain human rights bodies have recently begun to assert that this penalty runs counter the so-called ‘right to hope’, derived by way of interpretation from the right not to be subject to inhuman or degrading treatment. The purpose of the present contribution is to shed light on the potential and the limits of such trend by analyzing the case-law of universal (such as the UN system) and regional (the European system, the Inter-American system; the African system) bodies.
Isolation and Characterization of Oil-Degrading Bacteria from Bilge Water
2015
Twenty-one oil-degrading bacteria were isolated from bilge water. Based on a high growth rate on crude oil and on hydrocarbon degradation ability, 7 strains were selected (from 21 isolated) for further studies. 16S rRNA gene sequencing showed that isolated strains were affiliated to Bacillus, Pseudomonas and Halomonas genera; in particular, isolate BW-B12 (Bacillus sp., 99%), BW-C12 (Halomonas boliviensis, 99%) and BW-E12 (Halomonas boliviensis, 98%) were the best crude-oil degraders; after 10 days of cultivation in ONR 7a mineral medium supplemented with crude oil as single carbon source BW-B12, BW-C12 and BW-E12 showed a degradation rate of 80, 60 and 59%, respectively. The strains showed…
Przesłanka eugeniczna (embriopatologiczna) jako przesłanka legalnego przerywania ciąży – glosa do wyroku trybunału konstytucyjnego z 22.10.2020 r. (k…
2020
Eugenic (embryopathological) premise as a premise for legal termination of pregnancy – commentary to the judgment of the Constitutional Tribunal of 22.10.2020 (K 1/20) This study is a gloss to the judgment of the Constitutional Tribunal of October 22, 2020, in which the Tribunal declared the so-called unconstitutional eugenic (embryopathological) premises as a premise for legal termination of pregnancy. The adopted research methodology was as follows. Firstly, it was analyzed whether the right whose infringement is legalized by the ordinary legislator constitutes a constitutional value. Secondly, the problem boiled down to the question of whether the legalization of infringements of this ri…
Blue biotechnology: enhancement of bioremediation using bacterial biofilms on biodegradable scaffolds
2016
Petroleum hydrocarbons are still the most threatening environmental pollutants. A promising non invasive and low-cost technology for the treatment of contaminated sites is based on bioremediation by biodegrading microorganism endowed with catabolic ability towards oil and derivatives. New methods are needed to enhance and optimize natural biodegradation, such as the immobilization of hydrocarbons degraders in many types of supports. We developed a scaffold-bacteria bioremediation system to clean up oil contamination based on degradable 3D scaffolds. The polycaprolactone component is biodegradable, produced in the melt, i.e. at low cost and without the use of toxic solvents. The biofilm is m…
Nessuna speranza senza collaborazione per i condannati all’ergastolo ostativo? Un primo commento a Viola c. Italia (n. 2)
2019
The paper deals with a recent judgment delivered by the European Court of Human Rights dealing with the compatibility of the Italian "ergastolo ostativo" (life imprisonment without parole) with Article 3 of the European Convention on Human Rights.
A New Technique for Implementing ECtHR Judgments: Will It Work? The Corte Costituzionale “Urges” the Houses to Reform the Ergastolo Ostativo
2021
In this much-awaited ruling (Order No. 97 of 15 April 2021), the Corte Costituzionale had to decide on the constitutionality of the existing prohibition on release on parole for life prisoners convicted for Mafia-related crimes, in the absence of any cooperation with justice (ergastolo ostativo). This form of life imprisonment without prospect of release had already been deemed in contrast with Article 3 of the European Convention of Human Rights (echr) in the judgment rendered by the Strasbourg Court in Viola v. Italy (No. 2): on that occasion, the ECtHR invoked a legislative reform of the ergastolo ostativo. In the order at hand, the Corte Costituzionale, instead of formally declaring the…
Blue biotechnology: oil bioremediation using hydrocarbon-degrading bacteria immobilized on biodegradable membranes
2017
A novel bioremediation system to clean up oil contaminated water was developed combining hydrocarbon (HC) degrading bacteria immobilized and polylactic acid (PLA) or polycaprolactone (PCL) membranes prepared by electrospinning. The bioremediation efficiency was tested on crude oil using highly performant HC degrading bacterial strains isolated from marine and soil environments. The membrane morphology, the microbial adhesion and proliferation were evaluated using scanning electron microscopy (SEM). The SEM analysis highlighted that the fibers of the electrospun mats were in nanoscale with a similar diameter size distribution. The electrospun membranes exhibited high oil absorption capacity …