The reality of the importance of measurement and disclosure of environmental performance in the industrial companies: case study of Doplphin Energy company

تهدف هذه الورقة البحثية إلى تقصي واقع أهمية القياس والإفصاح عن الأداء البيئي في المؤسسات الصناعية بصفة عامة وفي القطاع النفطي بصفة خاصة ممثلا في شركة دولفين للطاقة وذلك من خلال ضبط مفهومهما و التعرف على مختلف الجوانب المتعلقة بهما. وتوصلت الدراسة إلى أن هناك وعي لدى مسؤولي وإطارات المؤسسة النفطية محل الدراسة بأهمية القياس والإفصاح عن الأداء البيئي وذلك من خلال نشرها لإحصائيات مهمة حول البيئة لا سيما المتعلقة بحرق الغازات، الانبعاثات الهوائية، إدارة المياه وتدوير النفايات، وينبع هذا الوعي كذلك من التشريعات والقوانين البيئية التي تهدف إلى حماية البيئة من التلوث وبأن المؤسسة تدفع ضرائب ورسوم بيئية في حالة تأثيرها سلبا على البيئة والمجتمع المحيط بها.This study aims to explore the reality of the importance of measurement and disclosure of environmental performance in the industrial institutions in general and in the oil sector, in particular, represented in the Dolphin Energy through adjusting accorded priority under the recognition and various aspects of them. The study found that there is awareness among officials of the tires and the oil corporation to replace the study of the importance of measurement and disclosure of environmental performance through the published statistics of the mission on the environment, particularly relating to the burning of the gases, air emissions, water management, waste recycling, this STEMS also the awareness of environmental legislation and laws aimed at protecting the environment from pollution and that pays taxes and fees in the case of environmental impact negatively on the environment and the surrounding community

Pour une cartographie plurielle des identités culturelles

"Besma MEZIOUD, Doctorante en Science des textes littéraires, présente les différentes étapes de l\u27évolution de la littérature algérienne. Cette évolution est marquée fortement par les périodes postcoloniales, partant de l\u27émergence à la postmodernité. D\u27où une revalorisation du patrimoine identitaire que Besma MEZIOUD explique au sens des ouvrages intitulés "Femme sans Sépulture" et "La Désirante" ayant pour auteurs respectivement Assia DJEBAR et Malika MOKEDDEM

Pour une cartographie plurielle des identités culturelles

L’identité culturelle contemporaine transparaît à travers le tiers-espace la littérature postcoloniale algérienne, comme un monde possible, une alternative imaginaire à la mémoire collective issue de schèmes aliénants. Terre de partage et de refuge, cette production occupe un espace significatif dans le champ des études francophones, qui fait l’objet d’une cartographie plurielle dans le cadre du présent article. Il s’agira, notamment, d’en dresser le paradigme esthétique et politique, grâce à une étude croisée de plusieurs romans algériens d’expression française.Contemporary cultural identity transpires through the third space of Algerian postcolonial literature, as a possible world, an imaginary alternative to the collective memory resulting from alienating patterns. As a territory meant for sharing and sheltering, this production occupies a significant space in the field of francophone studies, which will be studied as the subject of a plural cartography in the present paper. It is a contention of this essay, to establish the corresponding aesthetic and political paradigms, through a cross-literary study of several Algerian novels of French expressio

Methabenzthiazuron degradation with illuminated TiO2 aqueous suspensions Kinetic and reactional pathway investigations.

International audienceThe degradation of the herbicide MBTU [N-(2-benzothiazolyl)-N,N′-dimethylurea] in water was studied under various conditions. TiO2 photocatalysis using UV lamp more effectively degraded MBTU compared to TiO2 alone and photolysis. Photocatalytic degradation (TiO2/UV) was also carried out in different reaction conditions of pH, dissolved oxygen concentration, amount and kinds of TiO2 particles and initial substrate concentration. The photodegradation process followed first order kinetics, t1/2 = 39 min (co = 1.0 × 10−4 mol L−1, TiO2 = 1 g L−1), this is true at different initial concentration of MBTU. The behavior was in good agreement with Langmuir–Hinshelwood (LH) kinetic model. The reaction is favored under an alkaline condition and increases with increasing oxygen concentration. Degussa P25 was more efficient than PC50 and PC500 in spite of a high specific surface of the latter. The degree of MBTU mineralization, decrease of TOC, was about 70% after 48 h under our experimental conditions. The formation of sulphate, nitrate and ammonium as the ultimate oxidation products were analyzed during the reaction. The degradation of MBTU is mainly due to the formation of hydroxyl radicals and leads to several kinds of intermediate products which have been identified byESI–LC–MS analyses and by taking into account the literature results. Based on these results, the privileged sites of the attack of HOradical dot are shown and a mechanism is proposed and discussed

Seismic empirical relations for the Tellian Atlas, North Africa, and their usefulness for seismic risk assessment

Seismic events that occurred during the past half century in the Tellian Atlas, North Africa, are used to establish fundamental seismic empirical relations, tying earthquake magnitude to source parameters (seismic moment, fault plane area, maximal displacement along the fault, and fault plane length). Those empirical relations applied to the overall seismicity from 1716 to present are used to transform the magnitude (or intensity) versus time distribution into (1) cumulative seismic moment versus time, and (2) cumulative displacements versus time. Both of those parameters as well as the computed seismic moment rate, the strain rate along the Tellian Atlas strike, and various other geological observations are consistent with the existence, in the Tellian Atlas, of three distinct active tectonic blocks. These blocks are seismically decoupled from each other, thus allowing consideration of the seismicity as occurring in three different distinct seismotectonic blocks. The cumulative displacement versus time from 1900 to present for each of these tectonic blocks presents a remarkable pattern of recurrence time intervals and precursors associated with major earthquakes. Indeed, most major earthquakes that occurred in these three blocks might have been predicted in time. The Tellian Atlas historical seismicity from the year 881 to the present more substantially confirms these observations, in particular for the western block of the Tellian Atlas. Theoretical determination of recurrence time intervals for the Tellian Atlas large earthquakes using Molnar and Kostrov formalisms is also consistent with these observations. Substantial observations support the fact that the western and central Tellian Atlas are currently at very high seismic risk, in particular the central part. Indeed, most of the accumulated seismic energy in the central Tellian Atlas crust has yet to be released, despite the occurrence of the recent destructive May 2003 Boumerdes earthquake (M (w) = 6.8). The accumulated seismic energy is equivalent to a magnitude 7.6 earthquake. In situ stress and geodetic measurements, as well as other geophysical field data measurements, are now required to practically check the validity of those observations