ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
In this paper, we introduce a new estimator for the emission densities of a nonparametric hidden Markov model. It is adaptive and minimax with respect to each state's regularity--as opposed to globally minimax estimators, which adapt to the worst regularity among the emission densities. Our method is ...
Moray eels (Gymnothorax species) from tropical waters have long been known to be high-risk species, and the consumption of particularly the viscera or ungutted eels can result in severe ciguatera (known as Gymnothorax or moray eel poisoning), characterized by prominent neurological features. In this ...
In this work, the issue of hospital and urban wastewater treatment is studied in two different contexts, in Switzerland and in developing countries (Ivory Coast and Colombia). For this purpose, the treatment of municipal wastewater effluents is studied, simulating the developed countries’ context, while ...
Usually, the origin of a within-cohort bimodal size distribution is assumed to be caused by initial size differences or by one discrete period of accelerated growth for one part of the population. The aim of this study was to determine if more continuous pathways exist allowing shifts from the small ...
Background Salmonids are ray-finned fishes which constitute 11 genera and at least 70 species including Atlantic salmon, whitefishes, graylings, rainbow trout, and char. The common ancestor of all Salmonidae experienced a whole genome duplication (WGD) ~80 million years ago, resulting in an autotetraploid ...
The aim of this study was to develop and validate a high resolution melting (HRM) method for the rapid, accurate identification of the various harmful diatom Pseudo-nitzschia species in marine environments. Pseudo-nitzschia has a worldwide distribution and some species are toxic, producing the potent ...
Plant resistance to herbivores is a key component in integrated pest management. In most cases, silicon (Si) amendment to plants enhances resistance to herbivorous insects. The increase of plant physical barrier and altered insect behaviors are proposed as mechanisms for the enhanced resistance in Si-amended ...
Thymol, chemically known as 2-isopropyl-5-methylphenol is a colorless crystalline monoterpene phenol. It is one of the most important dietary constituents in thyme species. For centuries, it has been used in traditional medicine and has been shown to possess various pharmacological properties including ...
The regulation of food intake in fish is a complex process carried out through several different mechanisms in the central nervous system (CNS) with hypothalamus being the main regulatory center. As in mammals, a complex hypothalamic circuit including two populations of neurons: one co-expressing neuropeptide ...
Despite the increasing use of mussels in environmental monitoring and ecotoxicological studies, their genomes and gene functions have not been thoroughly explored. Several cDNA microarrays were recently proposed for Mytilus spp., but putatively identified partial transcripts have rendered the generation ...
ABSTRACT Subsea pipeline free span would pose a threat to its safety. Most of the existing detecting technologies for free span adopt outer pipeline detecting methods whose detecting results are constantly affected by complex submarine environment. Existing inner pipeline detecting technologies cannot ...
ABSTRACT The research on the effect of coastal facilities for protecting an estuary from channel blockage and a coast from beach erosion by waves demands to understand wave propagation, nearshore current and sediment transportation. The purpose of this research is to study the effect of jetty and propose ...
ABSTRACT Offshore exploration and shipping activity related to mining in northern territories are now really active, though these areas are concerned by harsh weather conditions. The offshore structures are subjected to atmospheric and marine icing phenomenon where heavy ice accumulations may increase ...
ABSTRACT We report on recent progress and validation of a 3D hybrid model for naval hydrodynamics problems based on a perturbation method, in which both velocity and pressure are expressed as the sum of an inviscid flow with a viscous perturbation. The far- to near-field inviscid flows can be solved ...
ABSTRACT Antifouling and drag reduction is an important part of ship tribology. During the process of fouling, bacterial biofilms formation is the first step. Algae, barnacles and shells and other large bio fouling organisms attach on the hull because of biofilms. Attachment will be difficult to achieve ...
ABSTRACT The attachment of marine fouling organisms is harmful to any marine structure such as ship hulls, fishing nets, jetties and platforms. The surface microstructure of materials has a great influence on its antifouling performance. The authors' previous study states that shells are a better choice ...
ABSTRACT This research aims to investigate the effect which big coastal facilities exert on coastal erosion due to waves in Khlong Wan Coast and examine some measures. Field surveys and a long-term simulation with the one-line numerical model indicated that the blockage of silt-and-sand supply from ...
ABSTRACT Large size ships have very flexible hulls resulting in low resonance frequencies of their structural eigen-modes. The structure of an ultra large containership is essentially U-shaped with a low shear center. This results in strong coupling between horizontal bending and torsion. A 3D hydroelastic ...
ABSTRACT With the wide use of the high-strength steel and the maximization of container ships, it is evident that stiffness of container vessels decreases sharply, which will cause springing phenomenon, the resulting influence on fatigue strength is inevitable. Firstly hull girder structural mode analysis ...
ABSTRACT During offshore installation and underway replenishment, two vessels are side by side arranged in close proximity. A time domain high order Rankine panel method is developed and applied to analyze hydrodynamic interactions of side by side vessels in waves in the present paper. Radiation and ...