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ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57

Synergistic Effects of Micro-electrolysis-Photocatalysis on Water Treatment and Fish Performance in Saline Recirculating Aquaculture System

A new physico-chemical process for TAN (total ammonia nitrogen) removal and disinfection is introduced in saline recirculating aquaculture system (RAS), in which the biofilter is replaced with an integrated electrolysis cell and an activated carbon filter. The electrolysis cell which is based on micro ...

MIC Resistant HDPE Lining for Seawater Applications

ABSTRACT Two types of corrosion cause the majority of problems in offshore or seawater applications; aqueous corrosion and microbiologically influenced corrosion (MIC). Aqueous corrosion results from the alkalinity of the seawater itself where MIC degradation stems from microorganisms in the seawater ...

Optimization of CP Design with Consideration of Temperature Variation for Offshore Structure

ABSTRACT Temperature effect on cathodic protection (CP) design current density was examined by electrochemical tests, and a case study of optimized CP design for the FPSO (Floating Production Storage and Offloading) using a computational analysis tool was performed. Electrochemical test results showed ...

Superhydrophobic Coatings and Oil and Water Separation

ABSTRACT Coatings have the function of resistance to environmental attack, i.e. barrier protection, abrasion, chemical, yet a number of them have not been optimized to give high resistance against wetting when it comes to dual or enhanced properties and higher durability. Moreover, the wetting phenomena ...

Reflections on 70 Years of Marine Corrosion Research and Testing Inspired by Francis L. LaQue

ABSTRACT Those presently involved in the marine corrosion field rely on documented historical data and collective experience to address present day needs pertaining to testing, research, and corrosion-control in marine environments. While certainly not the first to recognize or investigate materials ...

Corrosion Performance of Nano-Particle Enriched Epoxy Primer for Marine Highway Bridge Application

ABSTRACT Coatings for structural steel have been developed over the years to extend the service life of highway bridge structures by improving its corrosion durability and minimizing maintenance requirements. Nanoparticles are being considered in the development of durable coating systems due to their ...

Development and Assessment of Environmentally-Friendly Corrosion Stain Remover for Navy Topside Coatings

ABSTRACT The presence of rust staining on surface ship topside and freeboard areas has been a continuing cosmetic problem for the U.S. Naval Fleet. In an effort to maintain the appearance of a well maintained ship, the U.S. Navy is estimated to expend more than $1.0M annually on silicone alkyd topside ...

Interfacial and Corrosion Characterization of Zinc Rich-Epoxy Primers with Carbon Nanotubes Exposed to Marine Bacteria

ABSTRACT Nowadays, it is accepted that in aerobic conditions, marine electroactive biofilms induce faster oxygen reduction on active/passive alloys immersed in seawater. Besides, these alloys undergo a shift of open circuit potentials (OCP) towards noble direction after biofilm settlement, OCP can ...

A Combined Numerical and Experimental Approach to Study the Effect of Water Layer Thickness on the Electrochemical and Corrosion Distributions in the Galvanic Coupling between ...

ABSTRACT Connections between components made from corrosion prone alloys (e.g., precipitation hardened aluminum (Al) alloys) and stainless steel (SS) fasteners are frequently encountered in airframes exposed to an atmospheric marine environment. This exposure results in the formation of thin electrolytes ...

Coatings Cracking in Water Ballast Tanks: A Different Look

ABSTRACT The cracking and subsequent corrosion in water ballast tanks has long been a problem for the maritime industry. The potential damage to ships' hulls from this type of corrosion can be devastating and catastrophic. Consequently, there has been much study into the root causes of coatings cracking ...

Protection of Deep Sea Steel Structures Using Thermally Sprayed Aluminum

ABSTRACT Thermally sprayed aluminum (TSA) has been used to protect offshore structures for decades. Their effectiveness in mitigating corrosion of steel structures in seawater has been demonstrated over the years. However, very little work is reported on the corrosion performance of TSA when damaged. ...

Evaluating Corrosion under Protective Coatings for Steel in Marine Environments

ABSTRACT Protective organic coatings are the primary form of corrosion control for steel structures exposed in a marine environment. For more than fifty years, evaluation of suitable coatings for various service environments has relied substantially on exposure of coated steel panels followed by visual ...

AA5083 and AA6082 Exposed to Seawater – Effect of Potential on Corrosion Behaviour

ABSTRACT Due to its low weight there has been an increased interest for using aluminum in subsea structures in the oil & gas industry during the last years. In the literature, limited information is published about the behaviour of AA5083 and AA6082 under cathodic protection in real seawater. It is ...

Cathodic Protection by Distributed Sacrificial Anodes – A New Cost-Effective Solution to Prevent Corrosion of Subsea Structures

ABSTRACT Sacrificial anodes combined with organic coatings are the main strategy used to prevent corrosion on equipment submerged in seawater. Depending on the design life of the system, the size and complexity of the structure to be protected, and the environmental conditions, the total anode mass ...

Assessment of the Anticorrosion and Antifouling Performances of a Novel Hybrid Epoxy-Siliconized Coating

ABSTRACT Preventing material loss due to corrosion and fouling of steel surfaces is a daunting challenge for the oil and gas industries. The use of protective polymeric coatings containing active biocides is an interesting approach to address this problem. The development of active anticorrosion/antifouling ...

Myelodysplastic syndromes: advantages of a combined cytogenetic and molecular diagnostic workup

In this study we present a new diagnostic workup for the myelodysplastic syndromes (MDS) including FISH, aCGH, and somatic mutation assays in addition to the conventional cytogenetics (CC). We analyzed 61 patients by CC, FISH for chromosome 5, 7, 8 and PDGFR rearrangements, aCGH, and PCR for ASXL1, ...

Comparison of the In Vivo Biotransformation of Two Emerging Estrogenic Contaminants, BP2 and BPS, in Zebrafish Embryos and Adults

Zebrafish embryo assays are increasingly used in the toxicological assessment of endocrine disruptors. Among other advantages, these models are 3R-compliant and are fit for screening purposes. Biotransformation processes are well-recognized as a critical factor influencing toxic response, but major ...

Clinical Benefits of n-3 PUFA and ɤ-Linolenic Acid in Patients with Rheumatoid Arthritis

(1) Background: Marine n-3 polyunsaturated fatty acids (PUFA) and ɤ-linolenic acid (GLA) are well-known anti-inflammatory agents that may help in the treatment of inflammatory disorders. Their effects were examined in patients with rheumatoid arthritis; (2) Methods: Sixty patients with active rheumatoid ...

SmartFluo: A Method and Affordable Adapter to Measure Chlorophyll a Fluorescence with Smartphones

In order to increase the monitoring capabilities of inland and coastal waters, there is a need for new, affordable, sensitive and mobile instruments that could be operated semi-automatically in the field. This paper presents a prototype device to measure chlorophyll a fluorescence: the SmartFluo. The ...

Outdoor Cultivation of Marine Diatoms for Year-Round Production of Biofuels

Biofuel production using microalgae is believed to have the advantage of continuous year-round production over crop plants, which have strong seasonality. However, actual year-round production of microalgal lipids using outdoor mass cultivation has rarely been demonstrated. In our previous study, it ...

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