ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
Archaeology provides few examples of large-scale fisheries at the frontier between catching and farming of fish. We analysed the spatial organization of earthen embankments to infer the functioning of a landscape-level pre-Columbian Amazonian fishery that was based on capture of out-migrating fish after ...
Somatic cell nuclear transfer (SCNT) is a very promising cloning technique for reconstruction of endangered animals. The aim of the present research is to implement the interspecific SCNT (iSCNT) technique to sturgeon; one fish family bearing some of the most critically endangered species. We transplanted ...
The experimental set-up of this study mimicked recirculating aquaculture systems (RAS) where water quality parameters such as dissolved oxygen, pH, temperature, and turbidity were controlled and wastes produced by fish and feeding were converted to inorganic forms. A key process in the RAS was the conversion ...
Background The study aimed to analyze the nutritional status of Filipino children ages 0–60 months (0–5.0 years old) and 61–120 months (5.08–10.0 years old) in households headed by fisherfolks. Methods The 8th National Nutrition Survey (NNS) data collected by the Food and Nutrition Research Institute, ...
Abstract National law, National Oil Companies (NOC) codes of practice and environmental authority Health, Safety, Environmental Impact Assessment (HSEIA) Instruction stipulate the requirement for waste management, physical environmental damage limitation and anti-pollution procedures. These requirements ...
The Shetland Gas Plant (SGP) is a large gas processing site built in a very fragile ecosystem (blanket bog) at Sullom Voe on the Shetland Islands. There are multiple environmental designations in the surrounding environment (RAMSAR, SSSI - Site of Special Scientific Interest, MPA, …). The site processes ...
ABSTRACT The corrosion and fouling of steel surfaces are major problems affecting the infrastructure of most industries, especially the oil and gas industries. The application of barrier coatings is one of the most widely used methods for mitigating these metal-loss causing problems. In particular, ...
ABSTRACT The silicon iron anodes used in impressed current cathodic protection are manufactured using three different casting methods: The centrifugal method, the die-cast method, and the sand-cast method. The sand-cast method is restricted to the production of stick anodes; therefore, for the purposes ...
ABSTRACT Cu-based alloys are frequently used for seawater pipings because of their resistance to chloride pitting as well as anti-fouling characteristics. One of the variations of Cu based alloys, 90-10 Cu-Ni alloy, which is 10 mass % of Ni alloyed to Cu, is often a very attractive choice for seawater ...
ABSTRACT One of the most common problems when dealing with bolted joints in the oil and gas industry is corrosion; corrosion damage can affect the stability of the clamping force and it accelerates mechanical failures such as thread stripping and fatigue. Coatings are the most popular solution to protect ...
ABSTRACT Thermal Spray Aluminum (TSA) can be used to reduce anode demand or to extend anode life on projects with long design lives (i.e., 40 to 50 years). However, for subsea structures, TSA has not been used to replace the functionality of sacrificial anodes. In conventional CP design, TSA should ...
ABSTRACT Polysiloxane is an inorganic polymer chemistry with superior properties including temperature tolerance and UV resistance in comparison to organic type polymer chemistries. New R&D efforts in ambient cure, third generation, polysiloxane technology eliminate existing issues of post cure polysiloxane ...
ABSTRACT Sacrificial coatings such as thermally sprayed aluminium (TSA) have been used in offshore oil and gas platforms for decades. They provide a barrier layer when intact and cathodic protection when damaged or in the presence of surface-connected porosity. The damage tolerance of these coatings ...
ABSTRACT This paper discusses a comparative evaluation of the performance of various types of protective coatings available for the corrosion protection of structural steel components located in marine environments. The study is based on accelerated testing conducted at the Corrosion Research Laboratory ...
ABSTRACT The performance of bolts in drilling and production systems is determined by many parameters, such as the bolting material structure and properties, metallic and non-metallic coatings, installation factors (e.g., torque), and operational factors (cathodic polarization, etc.). The acceptance ...
ABSTRACT Thermal spraying of zinc and zinc alloys is a well-established process which is used for long-time corrosion protection of steel structures in maritime surrounding conditions and for offshore structures since decades. The paper summarizes the actual arguments to use long-time cathodic corrosion ...
ABSTRACT In the coatings industry, the development of a durable water repellent / superhydrophobic coating is of high interest to provide greater protection from water/moisture, therefore reducing steel corrosion especially for offshore applications. This study reports the performance of a volumetric ...
ABSTRACTBACKGROUND ASTM D610 “Evaluating Degree of Rusting on Painted Steel Surfaces” ASTM D714 “Evaluating Degree of Blistering of Paints” ASTM D1654 “Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments” (for creepage at an intentional scribe)
ABSTRACT In the present context of oil price down turn and enhanced competitiveness, cost saving becomes more important than ever. As part of cost reduction solutions in offshore projects, it may be envisaged to leave field joints bare on subsea pipelines instead of applying a field anticorrosion coating ...
Abstract Since the discovery of red fluorescence in fish, much effort has been invested to elucidate its potential functions, one of them being signaling. This implies that the combination of red fluorescence and reflection should generate a visible contrast against the background. Here, we present ...