ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
ABSTRACT In this paper, we describe how to use multi-variable decision analysis to facilitate offshore oil and gas platform decommissioning. We implemented decision analysis as a software tool (PLATFORM) to clarify and evaluate decommissioning alternatives against a comprehensive set of objectives, ...
ABSTRACT A flexible riser at that end of its service life in the Gulf of Mexico was planned for decommissioning, and was found via positive pressure annulus testing to have a breached outer sheath in the splash zone region. The decommissioning plan included abandonment of the riser from hang-off to ...
ABSTRACT Wave elevation around a cage array used in aquacultural engineering with different levels of biofouling are numerically investigated. The porous-media fluid model is introduced to model both the clean and the biofouled netting. An oscillating-boundary method is used to generate waves at one ...
ABSTRACT With conventional sources of uranium forecasted to be depleted within the century, research into the harvesting of uranium from seawater, which is estimated to contain 1000 times more uranium than land, is crucial to determining the continued viability of nuclear power generation. Recent studies ...
ABSTRACT Large-scale kelp raft culture system is under combination action of wind, wave and current. The safety and reliability of the facility directly affect the whole aquaculture production. In this paper, the calculation and analysis are based on hanging culture form of a kelp raft culture system. ...
ABSTRACT Fish cages in the open sea are exposed to cycle wave loads during their service life, and thus the fatigue reliability of mooring chains should be re-assessed to ensure the safety status. A numerical model was adopted to calculate the tension force of mooring chains. A nonlinear contact finite ...
ABSTRACT In this study, the k-ω SST model is applied to analyze the vortex structure around the net cage in current. To validate the numerical simulation, a series of physical model tests were conducted. The results indicate the numerical model can accurately simulate the flow field around the net ...
ABSTRACT In this study, the behavior of the coupled mooring system and floating multibody body is analyzed. The equations of motions for multibody and mooring line are introduced. To formulate combined equations of motion, the concept of the constrained force is applied. The combined equations of motion ...
ABSTRACT Background: Achieving nutritional goals of infants and young children while maintaining the intake of local and culture-specific foods can be a daunting task. Diet optimisation using linear goal programming (LP) can effectively generate optimal formulations incorporating local and culturally ...
Carotenoids are organic lipophilic yellow to orange and reddish pigments of terpenoid nature that are usually composed of eight isoprene units. This group of secondary metabolites includes carotenes and xanthophylls, which can be naturally obtained from photosynthetic organisms, some fungi, and bacteria. ...
Porphyrins bearing formyl or vinyl groups have been explored as starting materials to prepare new compounds with adequate features for different applications. In this review it is discussed mainly synthetic strategies based on the reaction of meso-tetraarylporphyrins bearing those groups at β-pyrrolic ...
In the past decade, marine protected areas (MPAs) have become an increasingly used tool for science-based conservation and adaptive management of marine biodiversity and related natural resources. In this review paper, we report on rather complete time-course series (55 years uninterrupted) focusing ...
The extinct group of the Pycnodontiformes is one of the most characteristic components of the Mesozoic and early Cenozoic fish faunas. These ray-finned fishes, which underwent an explosive morphological diversification during the Late Cretaceous, are generally regarded as typical shell-crushers. Here ...
Streptococcus suis serotype 2 is an important porcine bacterial pathogen and emerging zoonotic agent mainly responsible for sudden death, septic shock, and meningitis. However, serotype 2 strains are genotypically and phenotypically heterogeneous. Though a multitude of virulence factors have been described ...
The anchovy genus Encrasicholina is an important coastal marine resource of the tropical Indo-West Pacific (IWP) region for which insufficient comparative data are available to evaluate the effects of current exploitation levels on the sustainability of its species and populations. Encrasicholina currently ...
In conservation prioritisation, it is often implicit that representation targets for individual habitat types act as surrogates for the species that inhabit them. Yet for many commercially and ecologically important coral reef fish species, connectivity among different habitats in a seascape may be ...
Double digest restriction site-associated DNA sequencing (ddRADseq) and target capture sequencing methods are used to explore population and phylogenetic questions in non-model organisms. ddRADseq offers a simple and reliable protocol for population genomic studies, however it can result in a large ...
The structure and regeneration of the digestive system in the crinoid Himerometra robustipinna (Carpenter, 1881) were studied. The gut comprises a spiral tube forming radial lateral processes, which gives it a five-lobed shape. The digestive tube consists of three segments: esophagus, intestine, and ...
Fish oil supplies worldwide have declined sharply over the years. To reduce the use of fish oil in aquaculture, many studies have explored the effects of fish oil substitutions on aquatic animals. To illustrate the effects of dietary lipids on Chinese mitten crab and to improve the use of vegetable ...
Rationale: Docosahexaenoic acid (DHA) in cell membrane may influence breast cancer (BC) patients' prognosis, affecting tumor cells sensitivity to chemo- and radio-therapy and likely modulating inflammation. The possibility of identifying BC patients presenting with low DHA levels and/or low ability ...