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  • Articles  (11)
  • Open Access-Papers  (11)
  • Environment
  • 2005-2009  (11)
  • 1
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    Industrial Environment Dimension in the Process of Sustainable Development in Ivory Coast (2005)
    UNIDO
    Details
    Publication Date: 2021-05-19
    Description: While industrial growth is mainly a function of market forces, governments actively pursue policies and activities to accelerate industrialization. These policies, directly or indirectly, affect the natural environment. Sound industrial and environmental policies are not incompatible, even though it is difficult task either to set and enforce at the same time environmental standard that do not have some negative impact on industrial development options, or to formulate industrial policies that take environmental issues fully into account. The objective of this study is to elaborate a national assessment for the purpose of the industrial environment overview in the process of sustainable development in Côte d’Ivoire which is a part of the systematic assessment of the implementation of Agenda 21 in Côte d’Ivoire
    Description: UNIDO
    Description: Published
    Keywords: Ivory Coast ; Environment ; Industrialization ; Industrialization ; Environments
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 2
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    Environment And Sustainable Development; The Role Of The Engineer (2005)
    Details
    Publication Date: 2021-05-19
    Description: Today when the world stands on the threshold of a new era of ecological awareness and environmental activism it is important to have a clear understanding sustainable development. Different ways of explaining the term, "sustainable development" are discussed. In southern African regions problems of population growth and unbalanced distribution of population are continuously focussing problems to the planners. The impact of sustainability on environment is very well described. In most of urban areas in southern African countries the water is heavily polluted with domestic sewage, industrial effluents and solid wastes. A detailed study in this aspect is made. Rural-urban interface for sustainable development is described with particular relevance southern African regions. A case study of Delhi, Capital City of India is taken for example. Cities grow as fast as they do because of reasons mentioned in the paper. Larger the stock of skilled labour, greater the attraction for investors, greater the employment opportunities and consequently greater the migration from rural to the vicious urban circle. Thus the city expands without check and grows like cancer, exploding in size and in congestion until ultimately it becomes financially, environmentally and humanly unsustainable. Therefore it becomes necessary for habitat redesign for sustainability. Finally attention is focussed on the role engineers towards sustainable development. Many of the aspects of engineering discussed in this article are fundamental to the quality of life of clean and efficient city. No area of human activity will gain more from efficient use materials and reduction of pollution. But this is the time to remember that the objective of cities as of sustainable development, is quality of life and that engineering has an enormous role to play in this vital area.
    Keywords: Sustainable development ; Role of engineers ; Environment ; Rural-urban interface ; Environment ; Sustainable development
    Repository Name: AquaDocs
    Type: Conference Material , Non-Refereed , Paper
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  • 3
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    Enhancing environmental awareness through marine education (2005)
    Details
    Publication Date: 2021-05-19
    Description: Throughout this colloquium reference has been made to a number of environmental problems, most of them due to human activities (e.g. clearing mangrove forests, dynamite fishing, sewage pollution, etc.). While attempts are being made to correct these problems through new legislation and educating adults in more environmentally friendly practices, it is my thesis that we should be putting much more effort into the environmental education of young, school-age children since such efforts will, in the long run, have the greater impact on environmental awareness.
    Description: Published
    Keywords: Education ; Environment ; Marine environment
    Repository Name: AquaDocs
    Type: Working Paper , Non-Refereed
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  • 4
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    Geochemical and environmental studies of recent marine sediments and some hard corals of Wadi El-Gemal area of the Red Sea, Egypt (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: This Journal is published by National Institute of Oceanography and Fishereies, Alexandria, Egypt
    Description: The distribution of (Fe, Mn, Zn, Cu, Pb, Ni, Co and Cd) concentrations were determined in surface marine sediments and coral reefs at Wadi El-Gemal in the Red Sea area. There were significant differences in concentrations of heavy metals in the marine sediments relative to the coral reefs. Some heavy metal concentrations in sediments and coral reefs in the study area are high compared to that in the impact areas of the Egyptian Red Sea coast. The results indicate that the high concentrations of heavy metals in marine sediments and coral reefs are particularly affected by the high contribution of terrigenous materials through the stream of Wadi El-Gemal. Generally, heavy metals concentration in the sediments decreased with increasing distance from the shoreline with the exception of Pb, which increased with increasing distance from the shoreline. On the other hand, Pb concentration in coral reefs is high compared to that in some sediment samples at Wadi El- Gemal area. The grain size, carbonate, organic matter, phosphorus and heavy metals distribution reflect marked changes in lithology, biological activities in the sea and land geology of the study area. Carbonate content mainly of biogenic origin varies from 5.7 –69.5% of the sediments. Organic matter contents of the sediments (1.7 to 6.5%) and phosphorus content (110 to 5097ppm) usually reflect significant terrigenous influences. On the other hand, heavy metals show an increasing tendency in the mud fraction of Wadi El-Gemal area. The present work reflects how much the marine sediments and coral reefs are influenced by natural impacts from this wadi. The collected data will be useful in management and suitable development of the area, beside being helpful as database in the future.
    Description: NIOF
    Description: Published
    Keywords: Hard corals ; Wadi El-Gemal ; Natural impacts ; Heavy metals ; Environment ; Marine ecology ; Environments ; Marine ecology ; Marine pollution ; Sediments ; Coral reefs
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 5
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    Heat and salt storages in the offshore water of the Red Sea (2006)
    Details
    Publication Date: 2021-05-19
    Description: This paper is published by the Egyptian Journal of Aquatic Research National Institute of Oceanography and Fisheries
    Description: The seasonal changes of heat and salt storages in the offshore water of the Red Sea were studied using a historical data collected from different cruises during the period from 1924 to 1998. The heat storage within water column of different depths exhibits a seasonal variability. The heat storage is low during winter and high during summer. Also, the heat storage increases from north to south. The maximum values of heat storage are found in the southern central part of the Red Sea. It reached about 29.9x109 J/m2 within the water column of 300m depth. The seasonal change of heat storage from the annual mean is negative during winter and spring, while it is positive during summer and autumn. It has higher values during winter and summer, while its value decreased during spring and autumn. The salt storage within the water column decreases from north to south. The maximum values are observed at extremely northern Red Sea, while the minimum ones are found at extremely southern Red Sea, near Bab-El-Mandab Strait. The maximum value of salt storage within the water column of 300m depth reaches about 12.59 ton/m2 during summer. The salt storage differs slightly from one season to another. The maximum values of salt storage are observed during summer in the northern regions of the Red Sea, while they are found in the southern regions during winter. The seasonal changes of salt storage from the annual mean vary between -110 kg/m2 and 100 kg/m2.
    Description: NIOF - Alexandria, Egypt
    Description: Published
    Description: Salt, Heat
    Keywords: Physical oceanography ; Environment ; Environments ; Physical oceanography ; Salt water
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 6
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    Polycyclic aromatic hydrocarbons and aromatic plasticiser materials in the sea water of alexandria coastal area (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: This journal is published by NIOF, Alexandria, Egypt
    Description: Polycyclic aromatic hydrocarbons (PAHs), the real contaminants of petroleum, were detected in the surface seawater of Alexandria coastal area in winter and spring seasons of 1995. Their order of predominance, particularly for the individual components were principally due to the processes of input, transport and fluxes. Variation of PAHs was not following seasonal changes but it was slightly affected by partial dissolution of the lowerboiling aromatic hydrocarbons. The most abundant component of aromatic hydrocarbons was pyrene (PAH),112ngI-1 followed by naphthalene(56ngI-1) and its alkylated derivatives (dicyclic), then phenanthrene(14ngI-1) and its methylated derivatives (tricyclic). The potential fish carcinogenic PAH, dibenz [a & c] anthracene was found in extremely trace levels. Most aromatic hydrocarbons present in seawater were arised from combustion of various petroleum and non-petroleum products, while few aromatics were found as a result of petroleum pollution. PAHs were also detected in rain water(25ngI-1). Plasticiser mate rials (phthalates) were determined everywhere at considerable levels in the coastal area of Alexandria; which is the first district in Egypt for producing and recycling polyethylene, plastics and nylons.
    Description: NIOF
    Description: Published
    Description: Polycyclic aromatic hydrocarbons, Sources, Seasonal changes, Natural variation, Plasticizer materials, Rain water
    Keywords: Marine environment ; Environment ; Chemical analysis ; Environments ; Marine environment ; Marine pollution ; Oil pollution
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 7
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    Country Profile On Environment : Kenya (2005)
    JICA
    Details
    Publication Date: 2021-01-30
    Description: Published
    Keywords: Environment ; Environments
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 8
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    Effect of ecological and biological factors on the uptake and concentration of trace elements by aquatic organisms at Edku lake (2006)
    Details
    Publication Date: 2021-05-19
    Description: This journal is published by NIOF, Alexandria, Egypt
    Description: The effect of temperature, pH and trace elements concentration in the ambient water on the uptake and accumulation of Cu, Zn, Ni and Pb in various organs of fish and parts of aquatic plants of Edku Lake were studied. It was found that higher water temperature and lower pH during summer increased the rates of trace metals uptake by the most common fish species Oreochromis niloticus. The concentrations of Cu, Zn, and Ni in the various organs of fish were affected by the concentrations of these elements in the water. Cu, Zn, Ni and Pb attained higher concentrations in the roots of Eichormia crassipes if compared with their concentrations in the other parts of this aquatic plant. Sex of fish can be considered as an important factor affecting the accumulation of trace elements in different organs of fish. The accumulation of Cu, Zn, and Ni in the flesh, liver, gonads and bones of fish were negatively correlated with length of the fish.
    Description: NIOF
    Description: Published
    Keywords: Trace elements ; Fish ; Aquatic plants ; Pollution ; Lake fisheries ; Lakes ; Environment ; Accumulation ; Environments ; Lake fisheries ; Lakes
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 9
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    Pre-concentration and separation of Fe (III), Co (II), Ni (II) and Zn (II) by solid-phase extraction using silica modified with N-propylsalicylaldimine (2006)
    Details
    Publication Date: 2021-05-19
    Description: this paper is published by the Egyptian Journal of Aquatic Research - National Institute of Oceanography and fisheries, Alexandria, Egypt
    Description: N- propylsalicylaldimine based on porous silica, as ion exchanger, was used for the separation and preconcentration of Fe3+, Co2+, Ni2+ and Zn2+ from surface water samples collected from eleven locations at Nile river, Mediterranean and Red seas as well as tap water of Mansoura city. The effects of pH value, time of stirring, concentration of eluting acids and some common ionic species on the separation and preconcentration of the investigated metal ions in synthetic aqueous solutions were studied. The results indicate that the optimum conditions for separation are pH = 9.0-9.5 and time of stirring = 30 min. HCl is better eluent for the investigated metal ions than HNO3 except for Fe3+. Citrate and EDTA gave severe interference on the recovery of the metal ions therefore the water samples were previously oxidized to digest organic matter prior to the application process.
    Description: NIOF-Alexandria
    Description: Published
    Description: seperation, extraction
    Keywords: Copper ; Efficiency ; Environment ; Copper ; Efficiency ; Environments
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 10
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    Ecological and fisheries development of Lake Manzalah (Egypt): hydrography and chemistry of Lake Manzalah (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: This journal is published by the NIOF, Egypt
    Description: Lake Manzalah; the largest delta Lake in Egypt represents a dynamic system that has been undergoing continuous and pronounced changes since long times. In the last year’s this Lake faced drastic problems that retarded its environmental and fisheries development; the most serious one is the discharge of waste water. It is attempted in the present study to investigate the chemical characters of Lake Manzalah water during 2001-2002. Water temperature ranged from an average of 12.35oC in January and 29.14oC in July. Dissolved Oxygen, pH and total dissolved solids were found in ranges optimum for the living of marine and freshwater fish species. The average concentrations of nutrients lied in the following ranges: 1.24 to 4.89 μmol PO4 -3 l-1 , 5.08 to 28.73 μmol SiO4 -2 l-1 and 1.81 to 17.7 μ_mol NO3-1 l-1 The concentrations of phosphorus and nitrogen compounds were found to be relatively higher at the southern regions of the Lake near to the outlets of the drains.
    Description: NIOF
    Description: Published
    Keywords: Hydrography ; Water ; Chemistry ; Chemical composition ; Water content ; Environment ; Chemical composition ; Environments ; Water content ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 11
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    Biologie et exploitation du poulpe Octopus vulgaris (Cuvier, 1797) des côtes mauritaniennes. (2005)
    Details
    Publication Date: 2021-05-19
    Description: L’étude porte sur l’exploitation, la biologie et la dynamique du poulpe (Octopus vulgaris, Cuvier) des eaux mauritaniennes. La répartition spatio-temporelle dans la région du Cap Blanc ne semble être liée ni à la taille, ni au sexe, mais varie au cours de l’année. L’analyse de l’état actuel de la pêcherie basée sur les congélateurs céphalopodiers met en évidence une augmentation de l’effort de pêche et la poursuite de chute des p.u.e. La composition des captures révèle une progression du pourcentage des individus de poids inférieur à 200 grammes (« poulpo »). L’étude biologique montre qu’il existe deux saisons de reproduction par an (mai-juillet et septembre-novembre) qui engendrent deux recrutements, l’un en mai et l’autre à partir de septembre. La croissance pondérale a été obtenue sur les des distributions de fréquences de poids. Une transformation des poids en longueurs a permis de déterminer les paramètres de l’équation de VON BERTALANFFY pour chaque cohorte. Après détermination des coefficients de mortalité naturelle et par pêche, les résultats obtenus par le modèle global et le modèle de RICKER sont discutés. La mise en œuvre d’un modèle global montre que le niveau actuel des captures est proche de la prise maximale équilibrée et que l’effort de pêche ne doit pas être augmenté. //
    Description: This study deals with the exploitation, the biology and the dynamics of common octopus (Octopus vulgaris, Cuvier) in Mauritanian waters. In the Cap Blanc region, the spatio-temporal distribution appears to be independent of the length and sex but variable through the year. The analysis of the present state of the fishery reveals an increase of the fishing effort and continuous decrease of the catch per unit effort. An increase of the small individuals, with weight under 200 g (“poulpo”), can be seen from catches composition. The biological study shows that there are two spawning seasons (May-July and September-November) which allow two recruitments in May and September. The growth parameters of the VON BERTALANFFY equation are calculated from the transformed weights in lengths. The calculated mortality coefficients are used in a RICKER’s model of yield per recruit and the results are discussed. The use of a generalized production model shows that the present catch is very close to the maximum sustainable yield. Therefore, one would aware to prevent an increase of the fishing effort.
    Description: IMROP
    Description: Unpublished
    Keywords: Reproduction ; Common octopus ; Population dynamics ; Environnement ; Dynamique de population ; Exploitation ; Environment ; Poulpe ; ZEE Mauritanienne ; Distribution ; Mauritanian Exclusive Economic Zone ; Biologie ; Croissance ; Growth ; Octopus vulgaris ; Biology ; Octopus fisheries
    Repository Name: AquaDocs
    Type: Theses and Dissertations , Master thesis
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