ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
Abstract This paper presents the results of design, manufacturing, testing and validation of a medium and low voltage cable which has been blocked against the ingress of water and gas potentially occurring at water depths up to 3500 meters. Offshore umbilical and deepwater applications are considered. The ...
Given finite resources, intense investment in one life history trait is expected to reduce investment in others. Although telomere length appears to be strongly tied to age in many taxa, telomere maintenance requires energy. We therefore hypothesize that telomere maintenance may trade off against other ...
Data on the extent of the burden due to schistosomiasis is sparse in most Sub-Saharan African countries. However, this data is crucial for triggering medical attention. A review of extent of morbidity and determinants associated with schistosomiasis in Malawi was therefore conducted to quantify the ...
Abstract Objective/Scope This paper reviews the state of Wave Energy Conversion (WEC) technology as it relates to the ASCE COPRI Marine Renewable Energy (MRE) Committee's efforts to study and disseminate information on marine renewable energy facilities. Of particular interest are topics within the ...
In the current cost-saving and high-tech environment, this paper aims at demonstrating that significant business value can be derived from advanced information technology. The objective was indeed to identify and reduce risk in the Drilling and Wells domains using iterative, multi-disciplinary Big Data ...
Organisms can adapt to local environmental conditions as a plastic response or become adapted through natural selection on genetic variation. The ability to adapt to increased water temperatures will be of paramount importance for many fish species as the climate continues to warm and water resources ...
Betanodavirus is a causative agent of viral nervous necrosis syndrome in many important aquaculture marine fish larvae, resulting in high global mortality. The coat protein of Betanodavirus is the sole structural protein, and it can assemble the virion particle by itself. In this study, we used a high-titer ...
Acetylcholinesterase (AChE) is an important enzyme in cholinergic synapses. Most arthropods have two genes (ace1 and ace2), but only one encodes the predominant synaptic AChE, the main target for organophosphates. Resistance towards organophosphates is widespread in the marine arthropod Lepeophtheirus ...
Developing population dynamics models for zebrafish is crucial in order to extrapolate from toxicity data measured at the organism level to biological levels relevant to support and enhance ecological risk assessment. To achieve this, a dynamic energy budget for individual zebrafish (DEB model) was ...
The radiometric calibration of satellite data is critical in many environmental studies and applications that are based on remote sensing data. The Geostationary Ocean Color Imager (GOCI) has suffered from what is called an interslot radiometric discrepancy (ISRD), which creates clear inconsistency ...
Dietary fatty acids have been shown to exert a clear effect on the stress response, modulating the release of cortisol. The role of fatty acids on the expression of steroidogenic genes has been described in mammals, but little is known in fish. The effect of different fatty acids on the release of cortisol ...
Background Microalgae are potential sources of biofuels and high-value compounds. Mixotrophic conditions usually promote growth of microalgae. The pennate diatom Phaeodactylum tricornutum, with its short life cycle, completely sequenced genome, and ease of transformation, can be used as a model for ...
The main objective of the CADDY project is to replace a human buddy diver with an autonomous underwater vehicle and add a new autonomous surface vehicle to improve monitoring, assistance, and safety of the diver's mission. However, the use of robots underwater may also bring additional safety requirements. ...
Underwater environment is characterized by harsh conditions and is difficult to monitor. The CADDY project deals with the development of a companion robot devoted to support and to monitor human operations and activities during the dive. In this scenario the communication and correct reception of messages ...
Diving is a dangerous activity during which diver's safety is significantly compromised, both due to unpredictable environment and dependence on technical systems for life support. Introducing the concept of a cognitive autonomous underwater vehicle (AUV), that is capable of guiding, observing and assisting ...
This paper introduces a visual method for diver detection in the context of Human Robot Interaction (HRI). The detection is treated as a classification problem, where a discriminative model is trained by computing image features of the target (diver) and underwater scenery. This type of scenery poses ...
As part of the EU FP7 project CADDY, an efficient and reliable acoustic communication network is required to connect a diver, autonomous underwater vehicle (AUV) and surface vehicle (ASV) working cooperatively. This paper describes the development of the modulation, receiver algorithms and miniature ...
This paper discusses the problem of passive detection of divers in a shallow water environment. The sound produced due to breathing of the open-circuit divers is prominent in the high frequency range of the data. We formulate a detector to detect the waveforms of a diver's breaths, which occur as periodic ...
Diving as a profession and sport is and will be one of the most dangerous disciplines known by man. Water is not a natural habitat for humans and people need equipment to breathe underwater. Failure in the breathing apparatus, burst eardrum, decompression sickness and nitrogen narcosis are just a couple ...
Cognitive Autonomous Diving Buddy (CADDY) is an FP7 project initiated in February 2014. The key objectives of the project are to develop, implement, and demonstrate in the course of missions at sea the efficacy of a number of innovative systems to assist human divers during the execution of demanding ...