Development and progress of aquaculture in Egypt with special reference to cage and pen culture

After a brief review of Egypt's present annual production of wild fish, the idea of increasing this production by means of cage and pen culture is discussed, as it would utilize vast aquatic areas of good water quality. A preliminary experiment on cage culture of the carp, Cyprinus carpio is briefly reported

The Role of the ESP Practitioner as Business English Teacher

Teaching English for specific purposes (ESP) has always been an issue of concern in the field of English as a foreign language (EFL). Due to the increasing demands on ESP classes, especially in higher education, teachers of English for general purposes (EGP) have taken more of an interest in teaching ESP these days; nevertheless, many of them find it an uphill to teach such classes owing to the specificities of the discipline and the special teaching qualities it requires. This paper aims at highlighting some of the issues related to teaching ESP, basically the role of ESP practitioners as business English (BE) teachers. To achieve such a goals, the paper starts with some basic concepts of ESP, discusses BE as a branch of the ESP tree, and sheds light on the fundamental role of needs analysis (NA) in ESP and BE classes. Finally, the article concludes with highlighting the roles the ESP practitioners, particularly BE teachers, are to carry out to ensure a conducive environment for successful ESP classes, especially in a business context

The Middle Atlas Geological karsts forms: Towards Geosites characterization

International audienceRich limestone Jurassic formations and huge water reservoir are natural characteristics of the Middle Atlas Chain in Morocco, which, therefore, offers geodiversity of karst geosystems. The geological, tectonic and hydro-geo-morphological nature of the history of Atlas orogeny has affected the eastern part of the Middle, ensuring the evolution of karst features on various sites of this zone. This study presents some touristic offers specific to the Middle Atlas, particularly in terms of genesis, structures, and functions that could develop and promote public tourism offers. It argues that this development depends on future geological funds identification and classification as Geosites. On the basis of the patrimonial process characterising the Middle Atlas, this study suggests the creation of a Geopark in the Middle Atlas, within the framework of the evaluation criteria of the UNESCO. The implementation of this suggestion would contribute to the socioeconomic development of this region of Morocco

Usefulness of Φ-order kinetics for the investigation, characterisation and quantification of photodegradation processes

Φ-order kinetics has been shown to be the best tool to study photokinetics [1 – 6]. Various species have been studied using this approach including photochromes [1, 2] and drugs [3 – 6]. The unimolecular photodegradation processes of the form AB (1Φ) and photoreversible systems AB (2Φ), where A, the initial species phototransforms into a product B (A→B) which itself can return to A (A→B) via two distinct photoprocesses, each characterized each by an individual efficiency (Φ), have been mathematically described by integrated rate-law equations which express the so called 'Φ-order' kinetics [1 – 6]. The application of this novel approach was found to be useful to determine a number of photoreaction attributes. The reaction's photochemical quantum yield(s), the effects of initial species concentration, or the impact of competitive absorbers on the rate-constant of the photoactive species were all made readily accessible by simple methods. More importantly, the Φ-order kinetics has proven to facilitate the development of a wide range of actinometers from AB (1Φ) and AB (2Φ) systems [2 – 6]. This novel Φ-order kinetic method clearly has the potential for application in various fields including the photodegradation of natural products. The details of Φ-order elucidation kinetic methods will be discussed here and examples of application presented

Evaluation of the Scope, Organization, Effectiveness and Approach of the Work of the United Nations in Mine Action

The objectives of the present evaluation are: to provide member States with an independent perspective on the performance of the United Nations in this area, and to inform the development of a new United Nations Inter-Agency Mine Action Strategy for the period 2011-2015. In carrying out the evaluation, the Inspectors looked into the approach, efficiency, effectiveness and coherence of the work of the United Nations in mine action, as set out in the United Nations Inter-Agency Mine Action Strategy for the period 2006-2010 (the Strategy), identified best practices and lessons learned and formulated recommendations with a view to strengthening the work and coordination among United Nations mine action actors

Field observation on the use of PRID®Delta to induce estrus and ovulation in anestrous mares

To advance the time of the first estrus with ovulation, we administered intravaginally a progesterone-releasing devices PRID® Delta to 42 acyclic Arab-Barb mares for 11 days at different seasons: winter (n = 10), spring (n = 14), summer (n = 9) and autumn (n = 9). Twenty-seven of 39 mares that kept their coils responded to the PRID® Delta treatment with estrus and ovulation during the 42-day observation period, in winter (4/10, 40%) mares, in spring (9/13, 69%), in summer (7/7, 100%) and autumn (7/9, 78%) mares (P <0,05). At Day 2 of PRID® Delta treatment, mean initial of progesterone concentrations was significantly increased in all mares in winter (7.20 ± 0.49 ng mL-1), spring (7.30 ± 0.64 ng mL-1), summer (7.5 ± 0.58 ng mL-1 ) and autumn ( 7.60 ± 0.71 ng mL-1) (P <0,05). Total concentration of progesterone (area under curve (AUC)) during the treatment period revealed highest values in spring (67.95 ± 2.40 ng mL-1h-1) followed by autumn (65.20 ± 1.37 ng mL-1 h-1), winter (54.19 ± 7.00 ng mL-1 h-1) and summer 52.23 ± 3.32 ng mL-1 h-1; P < 0.05). In conclusion, administration of the intravaginal device releasing progesterone PRID® Delta was able to induce estrus and ovulation in mares at different times of the year. However, the efficacy of the treatment was not satisfactory in terms of efficacy compared to the season (low response rate in winter) and synchrony of intervals from removal of PRID® Delta to ovulation