ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
Background Studies on artificial hybridization of different Anguilla species were conducted recently, i.e. female A. australis with male A. dieffenbachii, and female A. japonica with male A. anguilla. The existence of these artificial hybrids was however not demonstrated by independent genetic methods. ...
ABSTRACT: 90-10 copper-nickel is one of the few engineering alloys available which offer both high resistance to seawater corrosion and biofouling. The alloy is not immune to microfouling but colonization of macrofouling is much restricted. The mechanism is not fully understood and is thought to be ...
ABSTRACT The traditional approach to corrosion modeling is relatively straightforward. Corrosion is expressed as a rate of penetration per year and failure is defined when a critical loss of section is predicted to have occurred. Such an approach is well suited to applications involving ships and pipelines ...
ABSTRACT The present work was carried out with the objectives of supplying to CP designers data collected insitu, in the actual environment in which the protected structure is deployed. Sensors arrays have been deployed at six different sites from 35 m to 900 m depth. The measurements are based on ...
ABSTRACT Hydrostatic pressure testing, or hydrotesting, of oilfield production and storage equipment requires that the damage done to equipment during testing is minimal. In this case study, the storage tanks at a large liquefied natural gas (LNG) terminal were to be hydrotested using the natural brackish ...
ABSTRACT: In a case that coating like heat shrinkable sheet (HSS) or cold tape is detached from buried pipeline surface, cathodic protection current can't penetrate into the pipeline surface enough to polarize cathodically due to the impervious characteristic of outer backing layer. Microbiologically ...
Introduction ABSTRACT: In recent years, there has been much demand for sophisticated marine coatings that comply with the Performance Standard for Protective Coating (PSPC) for dedicated seawater ballast tanks in all type of ships and double-side skin spaces of bulk carriers IMO/MSC/Res.215(82) and ...
ABSTRACT: Many tribological components are exposed to wear in a corrosive environment, these are usually structural elements, also supporting applied static and/or cyclic tensile loading. There are no research and test methodologies available for evaluating the multidegradation mechanisms of such complex ...
ABSTRACT: Ballast tanks on ships are used in various modes - completely filled with seawater, partially filled, or sometimes completely empty. It is the normal practice to coat the interior of the tanks with a suitable coating and also apply cathodic protection (CP). During service, the interiors of ...
INTRODUCTION ABSTRACT: An in situ study of more than 100 ballast tanks of merchant marine vessels looks to the corrosion process in these tanks from another perspective. The developed corrosion model shows major similarities with earlier studies based on laboratory experiments. The field work exposes ...
Background Crustacean moulting is a complex process involving many regulatory pathways. A holistic approach to examine differential gene expression profiles of transcripts relevant to the moulting process, across all moult cycle stages, was used in this study. Custom cDNA microarrays were constructed ...
Background MicroRNAs (miRNAs) play an important role in the regulation of many fundamental biological processes. So far miRNAs have been only identified in a few fish species, although there are over 30,000 fish species living under different environmental conditions on the earth. Here, we described ...
Background Worldwide, the genus Haliotis is represented by 56 extant species and several of these are commercially cultured. Among the six abalone species found in South Africa, Haliotis midae is the only aquacultured species. Despite its economic importance, genomic sequence resources for H. midae, ...
Coral reef ecosystems worldwide are under pressure from chronic and acute stressors that threaten their continued existence. Most obvious among changes to reefs is loss of hard coral cover, but a precise multi-scale estimate of coral cover dynamics for the Great Barrier Reef (GBR) is currently lacking. ...
Sentinel species such as bottlenose dolphins (Tursiops truncatus) can be impacted by large-scale mortality events due to exposure to marine algal toxins. In the Sarasota Bay region (Gulf of Mexico, Florida, USA), the bottlenose dolphin population is frequently exposed to harmful algal blooms (HABs) ...
Superhydrophobic surfaces of plants and animals are of great interest for biomimetic applications. Whereas the self-cleaning properties of superhydrophobic surfaces have been extensively investigated, their ability to retain an air film while submerged under water has not, in the past, received much ...
A device 100 for dispersing fish bait in a body of water. The device 100 has first and second body portions 102, 104 which are able to move relative to one other between first and second positions. The first and second body portions each have a plurality of apertures 106 extending therethrough. In the ...
Background and Objective Systemic chronic inflammation is linked to metabolic syndrome, type-2 diabetes, and heart disease. Lipopolysaccharide (LPS), a Gram negative microbial product, triggers inflammation through toll-like-receptor-4 (TLR-4) signaling. It has been reported that dietary fatty acids ...
The invention relates to a helmet comprising a protective shell. The protective shell consists of an upper part (1) and a lower part (2) extending downwards from the helmet. The upper part is made of a composite material of the sandwich type comprising two skins (12, 13), arranged on either side of ...
Background Worldwide, finfish fisheries are receiving increasing assessment and regulation, slowly leading to more sustainable exploitation and rebuilding. In their wake, invertebrate fisheries are rapidly expanding with little scientific scrutiny despite increasing socio-economic importance. Methods ...