marine environment Articles
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Durability of hybrid FRP reinforcing bars in concrete structures exposed to marine environments
To solve the brittle failure of existing FRP rebar, we developed hybrid FRP rebar that has more than 3% strain and plastic deformation like a steel reinforcement. So, the developed hybrid FRP rebar has emerged as one of the most promising and affordable solution to the brittle failure problem of existing FRP rebar in concrete structures. In this study, the durability of hybrid FRP rebar exposed ...
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Book Review: Protecting the Marine Environment from Land-Based Sources of Pollution: Towards Effective International Cooperation by Daud Hassan
Protecting the Marine Environment from Land-Based Sources of Pollution: Towards Effective International Cooperation, by Daud Hassan. Hampshire, UK, Ashgate, 2006. ISBN: 0-7546-4601-7 Keywords: book review ...
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Failure analysis showing the effect of sulphur content in stainless steel on the resistance to stress corrosion cracking in marine environments at ambient temperatures
The risk of environmentally assisted cracking in downhole components is high due to sour conditions, i.e. the presence of hydrogen sulphide. Therefore a range of materials possessing excellent corrosion resistance are employed. However, corrosion is not only downhole related but is also a common problem on the platform deck itself due to airborne salts from ocean spray. For this reason the ...
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Choice of biotests and bioindicators for evaluation of the quality of the marine environment
Approaches to the analysis of marine environmental conditions using the embryos, larvae and juveniles of marine invertebrates are discussed. A general approach to the choice of biotests and bioindicators is described.Keywords: bioindicator, biotest, cadmium, chiton, copper, detergent, marine (sea) pollution, sea urchin, ...
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Climate change and CO2 in the oceans and global oceans governance
This paper describes some of the effects climate change is having on the oceans and some of the resulting implications for international oceans governance. It describes short- and medium-term measures that could be taken to meet the challenges posed by a changing climate, while sustaining the vitality of the marine environment and protecting the lives and livelihoods of humans dependent on the ...
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Stability and aggregation of silver and titanium dioxide nanoparticles in seawater: Role of salinity and dissolved organic carbon
The behavior and fate of nanoparticles (NPs) in the marine environment is largely unknown and has the potential to have important environmental and human health implications. The aggregation and fate of NPs in the marine environment is greatly influenced by their interactions with seawater and dissolved organic carbon (DOC). In this study, the stability and aggregation of 30 nm‐diameter silver ...
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Aiming to Improve Local Marine Conditions
Surface water measurements in the Stockholm archipelago Waxholmsbolaget Shipping Company assists the entrepreneurially lead Baltic Deepwater Life Organisation to make high-resolution surface water measurements in the Stockholm Archipelago. The goal is to map model the driving factors behind excess nutrients in the marine environment. Learn more about the products and systems used to assess the ...
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Underwater interpretative trail: guidance to improve education and decrease ecological damage
Studies of environmental education on trails in the sea and their impact are scarce, especially as regards the Brazilian coast. Herein is analysed an implemented model of an interpretative guided underwater trail (free diving), undertaken in the Anchieta Island's Park, southeast Brazil. The activity consisted of a preparatory lecture, followed by a 350 m trail along the rocky shore. The results ...
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Geo-engineering, the Law of the Sea, and Climate Change
Plans to address climate change increasingly include proposals for geo-engineering projects, whose effects are likely to be global, at best only partly predictable, not necessarily wholly benign, and extend beyond their objective. Geo-engineering proposals should receive detailed, precautionary scrutiny by the international community, which requires sophisticated international legal instruments ...
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Structural performance evaluation of heavily deteriorated RC members based on simplified inspection results
Port and harbour structures are generally affected by harsh marine environmental actions. Material deterioration and damage to structural components are likely to occur throughout structure's service period. In order to select suitable methods of countermeasures for such structures, structural evaluation by using simplified inspection results shall be necessary. The methodology and accuracy of ...
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Environment Northern Seas
This paper is based on a keynote speech given by Prime Minister Brundtland of Norway at Environment Northern Seas, Stavanger, August 1991. She emphasised the shared social responsibility of industrial nations in seeking cost-effective solutions to global environmental problems, and identified the crucial role of industry as a partner. International cooperation between the North Sea States showed ...
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Human pharmaceuticals in the marine environment: Focus on exposure and biological effects in animal species
Marine waters have been poorly investigated for the occurrence of pharmaceutical contamination. Recent data confirm that pharmaceuticals widely occur in marine and coastal environments; therefore assessment of potential risk to marine species needs further efforts. The present paper represents the first extensive review of pharmaceutical contamination in marine environments addressing the ...
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The marine environment and ballast water management law
This article contains a study of international and national measures dealing with the potential threat of pollution and the introduction of alien species that may come from the discharge of improperly treated ballast water. Ballast water management policy, law and coastal biosecurity strategies are considered. There are challenges to achieving the ideals of ballast water laws, as correctly ...
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Key Technology of Unmanned Underwater Vehicle
1. Overall Technology Underwater UAV is a highly technology-intensive and systematic project, involving dozens of professional disciplines. Each discipline restricts each other. Purely pursuing a single technical index, one will lose sight of the other. To solve these contradictions, we need to strengthen coordination in addition to a strong system concept. On the premise of meeting the overall ...
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Raising environmental awareness in the Baltic Sea area: results and experience gained from the SPA Project
In the 1990s, the countries in the Baltic Sea catchment area were undergoing many changes on the political, economic, social and cultural levels. The development of democracy in the previous Eastern Block countries and the enlargement of the European Union to include Sweden and Finland have also created a new framework for international, regional and sub-regional cooperation in the field of ...
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210 Pb in marine salt consumed by the inhabitants of Recife, Brazil
210 Pb is widely distributed in the marine environment. The aim of this research, therefore, was to determine 210 Pb concentrations in marine salt consumed by the population of Recife and calculate the ingestion dose of 210 Pb due to marine salt consumption. The ion exchange resin method was used. The concentration of 210 Pb varied from 4 to 365 Bq kg –1 in fresh weight. The ...
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Environmental problems in Russia affecting the Black and Baltic Seas
This paper addresses problems of marine environment protection in Russia, with an emphasis on the legislative and institutional basis for protecting the seas from oil pollution. The status of the Black and Baltic Seas is described, together with the relevant technical, organisational, and economic elements. As an example of a comprehensive approach for tackling the problems under consideration, ...
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Marine phanerogams as a tool in the evaluation of marine trace-metal contamination: an example from the Mediterranean
New ways of evaluating the quality of the coastal marine environment in a practical, dependable and cost-efficient manner are continually sought. It would thus appear of some value to make use of bioindicator species that reflect both the average levels and the temporal variations of contaminants at a given site. Owing to their extensive distribution in the littoral zone and the ecological ...
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