Reflections as a major socio-pedagogical component to teaching development

Reflective teaching as a bottom-up process of learning teaching is said to be articulated all over the world, but in Algeria. This has led to a fatalistic apathy which has made teachers, in secondary schools, turn nonchalant and perform an insipid teaching. It is believed then that if a teacher never questions the goals of his teaching and never reflects on his teaching practices, can, in no way, achieve positive learning outcomes. It is truism that teaching at the level of secondary schools must be backed up by an instructional methodology which is dished out by managers and teachers have to follow blindly what is imposed on them. However, if they remove themselves from jadedness and make reflections on their daily teaching practices and get rid of awkward ones, their teaching will, by all means, turn to be effective and achieve better results. This paper clearly describes teaching in our secondary schools and highlights the positive effects of the concept of reflection if undertaken by these teachers

Application of Automated Throw Backstripping Method to Characterize Recent Faulting Activity Migration in the Al Hoceima Bay (Northeast Morocco): Geodynamic Implications

This study was supported by projects CGL2016-80687-R AEI/FEDER, P18-RT-3275, B-RNM-301-UGR18 and RNM148 (Junta de Andalucia/FEDER); ALBAMAR JCJC ANR-17-CE030004; the EUROFLEETS program (FP7/2007-2013; no 228344); project FICTS-2011-03-01; and the FPU PhD grant (16/04038), and also by the Spanish Government through the 'Severo Ochoa Centre of Excellence' accreditation (CEX2019-000928-S).The IHS KINGDOM software package was utilized in the present study. We also to the marine surveys, MARLBORO2 and SARAS (https://campagnes.flotteoceanographique.fr/ campagnes/12450090/; https://campagnes.flotteoceanographique. fr/campagnes/12000010/).Automation of the throw backstripping method has proven to be an effective tool for the determination of the evolution of tectonic activity in wide fault zones. This method has been applied to the Al Hoceima Bay (southwesternmost Mediterranean, Alboran Sea) for a time period covering the last 280 kyr on 672 faults imaged on 265 high-resolution seismic reflection profiles. This area was affected by major earthquakes and corresponds to a transtensional basin deformed by growth faults. The automated application of throw backstripping allowed for a faster deciphering of the migration of tectonic activity. Results show a westward migration of the deformation with quickly increasing deformation rates in the most recent time frames near Al Hoceima, one of the most populated cities. This migration is in agreement with the current seismicity, the GPS data, and recent brittle deformation data. Vertical throw rates of up to 0.47 mm/year have been calculated, for the most recent time periods, in segments of the Bokkoya fault zone. The westward migration of the deformation fits with the reconstruction suggested by the westernmost Mediterranean geodynamic models during the Pleistocene epoch, and it might be the consequence of the interaction between the northwest (NW) movement of the South Alboran indenter and the back Rif south-westward displacement. The highly accurate constraints of the evolution of the tectonic activity offered by this automation will substantially improve the seismic hazard assessment.Junta de Andalucia European Commission CGL2016-80687-R AEI/FEDER P18-RT-3275 B-RNM-301-UGR18 RNM148ALBAMAR JCJC ANR-17-CE030004EUROFLEETS program (FP7/2007-2013) 228344German Research Foundation (DFG) 16/04038Spanish Government through the 'Severo Ochoa Centre of Excellence' accreditation CEX2019-000928-SFICTS-2011-03-0

0455 : Relationship of hyperglycemia to the no-reflow phenomenon in ST-elevation myocardial infarction patients treated by primary percutaneous coronary intervention

BackgroundIt has been shown that elevated blood glucose levels on admission are associated with worse outcome in ST elevation myocardial infarction.Impaired microvascular function and no-reflow phenomenon seem to be one of the underlying mechanisms of hyperglycemia deleterious effectsAimTo establish the relationship between hyperglycemia on admission and the no-reflow phenomenonMethodsPatients presenting with acute STEMI who underwent primary percutaneous coronary intervention (PCI) were enrolled. ST segment resolution was evaluated at 90 minutes in the worst lead. No-reflow was defined as a resolution of ST segment less than 50% in the worst lead at 90 minutesResults102 consecutive patients were enrolled (87 men and 15 women) with a mean age of 56.95±12.89 years. The no-reflow phenomenon was observed in 28 (27.45%) patients, their glucose level on hospital admission was significantly higher than in patients whithout no-reflow phenomenon (12.48±7.48 vs. 8.55±2.27 mmol/l; p = 0.01). Multivariate analysis showed that hyperglycemia defined as glycemia >11mmol/L was an independent predictor factor for no-reflow (OR = 2.18, CI = 1.42 – 3.84; p = 0.002)ConclusionHyperglycemia on admission is associated with higher risk of no-reflow in STEMI patients undergoing primary PCI

Lithostratigraphic analysis and characterization of the upper miocene deformation of the Beni Bou Ifroure massif (Jbel Harcha Unit) eastern Rif Morocco

In the eastern Rif the unit of Jbel Harcha which is part of Beni Bou Ifroure massif, the latter belongs to the Rif chain which was formed during the Alpine orogeny. Lithostratigraphic analysis of the geological map and field investigations shows that this unit is constituted by carbonate facies of limestone attributed to the lower and middle Jurassic. At the level of upper Jurassic and Cretaceous we observe metamorphic terms presented by schists. The structural examination allows to distinguish two types of deformation the first one is penetrative which is materialized by a metamorphism of the formations of upper Jurassic and Cretaceous whose direction of the planes of schistosity varies between N125 and N140. This type is linked to a NE-SW shortening, attributed to the Tortonian and materialized by a set of open and normal faults of direction N040 to N045. The second type is generally characterized by brittle structures presented by dextral strike-slip faults of direction N120 to N140 that intersect the ancient accidents. This episode linked to a N-S to NW-SE shortening is responsible for the N070 thrusting of the Jurassic rocks in the study area

Liquid–liquid extraction of thorium(IV) by fatty acids: a comparative study

International audienc

Les structurations post-orogeniques du Rif Oriental: apport des donnees de la cartographie numeriques et de donnees de terrain

Workshop Alboran domain and Gibraltar Arc: geological research and natural hazards, Granada (España), 16-18 octubre (2019

Les structurations post-orogeniques du Rif Nord-Central (Maroc) apport des donnees de la cartographie numeriques

Workshop Alboran domain and Gibraltar Arc: geological research and natural hazards, Granada (España), 16 -18 octubre (2019

Preparation of a novel composite based polyester nonwovens with high mechanical resistance and wash fastness properties

International audienceIn this work, polyester fiber (PET) were functionalized by oxides (Ox) like titanium dioxide (TiO2), zinc oxide (ZnO) and silicon dioxide (SiO2), using polyvinylidene fluoride (PVDF) as binder to obtain a PET-PVDF-Ox material. Chitosan polymer (CT) was further grafted as coating layer to improve the surface compatibility, resulting in the PET-PVDF-Ox-CT composite. The obtained products were thermally pressed and fully characterized. The chemical coatings, physical and thermal properties were investigated. It was found that coated PET nonwoven is highly hydrophobic materials with good diffusion resistance. Incorporation of TiO2, ZnO and SiO2 resulted in the formation of strong cross-linked CT network, producing improved dripping resistance of PET nonwoven. In addition, the modification steps allowed increasing significantly the mechanical resistance. This was explained in terms of improved surface compatibly and interfacial bonding occurred in the matrix. Moreover, soil release tests confirmed the high durability against washing for PET-PVDF-Ox-CT composite. This work allowed developing a facile process for the fabrication of new composite based nonwovens with satisfactory durability and high mechanical resistance

Polyester-supported Chitosan-Poly(vinylidene fluoride)-Inorganic-Oxide-Nanoparticles Composites with Improved Flame Retardancy and Thermal Stability

International audiencePolyester (PET) was pre-activated by atmospheric air plasma and coated by various inorganic oxide nanoparticles (MOx) such as titanium dioxide (TiO2), zinc oxide (ZnO), and silicon oxide (SiO2), using poly(vinylidene fluoride) (PVDF) and chitosan (CT) as binders. The resulting PET-PVDF-MOx-CT composites were thermally compressed and then characterized by scanning electron microscopy, Fourier infrared spectroscopy, thermal gravimetric analysis, and flame retardancy (FR) ability tests. PET modifications resulted in more thermally stable and less harmful composites with weaker hazardous gas release. This was explained in terms of structure compaction that blocks pyrolysis gas emissions. CT incorporation was found to reduce the material susceptibility to oxidation. This judicious procedure also allowed improving flame retardancy ability, by lengthening the combustion delay and slowing the flame propagation. Chitosan also turned out to contribute to a possible synergy with the other polymers present in the synthesized materials. These results provide valuable data that allow understanding the FR phenomena and envisaging low-cost high FR materials from biodegradable raw materials