Design Concept of the Motor with Gd123 Bulk HTS Pole Field Magnets

This distinctive machine was designed as a propulsion motor for small ships below 500 t. We have applied melt-textured GdBa2Cu3O (Gd-123) HTS bulks as pole-field magnets to the synchronous machine. These bulk HTS can provide a high magnetic field over 3 T at 77 K. The present motor has eight bulk HTS whose sizes are 60 mm in diameter and 20 mm in thickness, fixed on a single rotor plate. They were cooled down below Tc by using a circulation of liquid nitrogen. The structure of our rotor plate,...

Shadows by Ixsea An Example of a Sonar Using the Latest Technologies in Acoustics Positioning Informatics and Web

Abstract This study provides a new system for imaging the sea ground using the newest technologies in acoustics, sonar theory, positioning, informatics, and web techniques. The new side scan sonar called SHADOWS is the first commercially available sonar using the Synthetic Aperture Theory. This principle, introduced in radar since the 1970s, consists of rebuilding a long antenna by adding different contributions along time. In radar, the EM wave speed compared with the speed of the plane or...

Artificial Reefs in Marseille From Complex Natural Habitats to Concepts of Efficient Artificial Reef Design

Charbonnel, Francois Carnus, Sandrine Ruitton, Laurence Le Direac'h, J.-G. Harmelin, and J. Beurois Abstract With the deployment of 27,300 m3 of artificial reefs (AR) and a 6 million budget, the project R cifs PRADO is the largest artificial reef ever realized in the Mediterranean Sea. This large-scale program is dedicated to the restoration of an active artisanal fishery in a zone where Posidonia beds, a highly productive habitat, have previously been destroyed. Marine biologists conceived...

Description of Reef Architecture

The objective is to provide marine plant and animal life with the features of hard substrates, a range of ecological habitats that are as large and diversified as possible (dimen sions of cavities between a few decimeters and a few millimeters) to provide food sources and shelter to all stages of biological cycles of the different species (Tables 1 and 2). Biological effectiveness is provided by the system known as chaotic piles, which has proven to be valuable in the Mediterranean. But the...

Granting Use of Maritime Public Domain Outside of Ports

Described in French as CUDPM (concession d'utilisation du domaine public maritime en dehors des ports), it replaces the containment concession that has existed since 1979.13 Founded in 2004,14 this authorization allows a very broad definition of the concept of use of the MPD (marine public domain), thus opening the door for artificial reefs. The concession is applicable to various forms of work, facilities, and or uses, subject to assigning them to public use, to a public service, or to an...

Oxygen Planar Optode

The two-dimensional oxygen concentration in biotur-bated sediments and overlying water was quantified with semi-transparent oxygen planar optodes. Oxygen concentration measurement was based on the dynamic quenching of oxygen on an immobilized fluorophore. The optical sensor was composed of two thin layers, a transparent polyester support foil ( 150 mm thick), and a sensing layer where the oxygen-quenchable fluoro-phore of platinum (II) mesotetra (pentafluorophenyl) porphyrin (Pt-PFPP) was...

Preface

For a long time, very fruitful dialogues have been established between Japanese and French oceanographers, by means of different kind of contacts. These dialogues and our common scientific meetings are continuing by this Colloque franco-japonais d'Oc anographie. Personally, I have also had the chance to promote these exchanges directly several times with the Soci t franco-japonaise of Japan, especially when I was Director of Maison franco-japonaise (Nichi-Futsu Kaikan) in Tokyo, for 4 years. It...

Sway

Fig. 1 Picture of the micro-acceleration data logger. Arrows along the cross-sectional and the longitudinal directions represent swaying and surging directions, respectively. Gray arrow and white line show the direction of the fish head, 2 cm long Fig. 1 Picture of the micro-acceleration data logger. Arrows along the cross-sectional and the longitudinal directions represent swaying and surging directions, respectively. Gray arrow and white line show the direction of the fish head, 2 cm long...

Polychlorobiphenyl PCB Hydrocarbons

Six levels of the total PCB content (S C118 + C138 + C153 + C180) x 100 41 are identified (cf. Wafo et al. 2005, for the method). The highest value reaches up to 50 mg kg-1 dw. It is considered as the reference for non-polluted waters in the USA, with a temperate climate, but it is not valuable in wet tropical climate conditions. At Mayotte, this reference value is lower, near 30 mg kg-1 dw. Around Mayotte, three shorelines show the highest PCB content (Fig. 5b) eastwards where the urban...

References

Hamano A, Nakamura T, Uchida K (2001) Assessment of artificial reef clusters on fish distribution using G.I.S. techniques. Proceedings of the first international symposium on GIS in Fishery Science, pp 44-50 Hamano A, Tanoue H, Kieser R (2005) Three-dimensional G.I.S. using sonar information for coastal fisheries. ICES Council Meeting 2005 (Session U) 19, pp 1-12 Kakimoto H (1998) Studies on the biological function of artificial fish reefs. Fish Eng 35 1-7 Maclenan DM, Simmonds EJ (1991) Fish...

The Stock Enhancement Programs in Japan

The release of hatchery-reared juveniles into the natural environment as part of stock enhancement programs is very controversial, but still extensively practiced T. Umino (*), E. Blanco Gonzalez, H. Saito, and H. Nakagawa Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, 739-8528, Japan e-mail umino hiroshima-u.ac.jp worldwide to recover depleted fishery stocks. The economic feasibility of the releases and the biological impact on the wild stocks...

Alister Mission Management System

ALISTER Mission Management System (Figs. 7 and 8) is a part of the overall Autonomy mission Planning A Management System, which provides the operating team with a complete set of functions for mission planning, mission monitoring, and mission data post-processing through its two main exploitation interfaces mission screen and Data Vision screen. Mission planning The mission screen offers improved creation of easy-to-use interactive tools for the creation of basic behaviors for AUV (based on...

Specifications of the Motor with Bi2223 HTS Wire Winding Coils

Cryocooler

The prototype of the motor was aimed at the MW class of ship propulsion systems. The vertical-arranged motor (Fig. 3b) is applicable to conventional podded-propulsion systems as well as azimuth thrusters. A coreless field-pole coil of Bi-2223 HTS wire provides a larger output power than the bulk HTS because the total magnetic flux is also larger. A double-pancake coil (DPS)-shaped field-pole coil is 160 mm in diameter and 26 mm thick, including the cooling plates, and is wound by 420 m of...

The Japanese Management Experience with the Service of a Strategy Type ICAM

The Japanese experience is a successful implementation of ICZM facilitated by a mono-actor in regard to the use of resources. The system is very close to the actors (fishermen), and the politicians listening to the social demand for seafood have put in place tools designed by a scientific-technical sector structured in order to conserve and manage the resources and activities that depend on them. Japan is undoubtedly regarded as the world leader in the successful development of the seabed at...

Conclusion

The Thau Lagoon looks, from a biological diversity point of view, like a Japanese island in the very heart of the Mediterranean. In a context of global homogeniza-tion of biodiversity due to biological invasions (Clout 1998 Galil 2000), it could be the harbinger of the next century globalized world ocean. Fig. 2 A sketch of the dominant macrophytes on and beneath Zostera marina, Z. noltii, and Gracilaria spp. are putatively (4 m depth) an oyster table of the Thau Lagoon, in spring. Only native...

Discussion

Knowing the date of the closure of the lagoon is important to gain an understanding of the modifications of the lagoon structure and functioning. The date of the last closure is still uncertain, but can be estimated from sailors' reports and maps. The first map, drawn by Sir Edward Belcher in 1839, showed two passages one at the NE and the other at the SE end of the island. These passages were no longer shown on the maps drawn by Sir Hennig Master in 1849 and Le Coat de Kerveguen in 1858....

Authorization of Marine Culture Exploitation

Used for a long time in the case of artificial reefs, the authorization of marine culture exploitation (farming) has not been feasible since the 2000s. Being relatively old,20 this authorization does not concern, as its name suggests, the immersion of artificial reefs. Its extension to the latter is the result of a flexible interpretation of the definition of the activity of marine culture and its contents. Sensu lato, marine cultures include shellfish farming (oyster and mussel cultures) and...

Toward a Methodological Proposal

However, especially in the context of the Marine Strategy Framework Directive 9388 2 2007 (which recommends achieving good environmental status in the Communitys marine environment by 2020), stakeholders need a way to take maritime issues into account. From the results of this study, three major lines of work have been released. They should constitute bases for the construction of a protocol to improve the consideration of the marine territory biodiversity. Fig. 2 Areas and species subject to...

Results and Discussion

The macrobenthic compositions within mesocosms were compared using the quantitative Sanders coefficient based on the species dominances and the qualitative Sorensen coefficient calculated with the presence absence of the species (Pischedda et al. 2008). Fig. 1 Microcosm experimental set up. Mud sediments from three polluted with oil (BAL 110), three with bioturbation where Aber Benoit were maintained in microscosms at the CEDRE Nereis diversicolor was added, and three subjected to both pollu-...

Assay on the Marine Bacteria Pseudomonas Nautica sp 617

The method for measuring respiration by flow cytom-etry was developed on a mono-specific culture of Pseudomonas nautica sp. 617. The culture is grown at 20 C, under agitation, in an acetate medium. This medium is adequate for FCM analysis as it does not emit any fluorescent background signal that could overlap the signal from the bacteria. The development of the method implies working on homogeneous cells (i.e., same physiological state), and therefore cells were processed when in the...

The Thau Lagoon A Japanese Landscape

In the Thau Lagoon, the dominance coverage, biomass of introduced macrophytes is overwhelming on natural and artificial hard substrates, e.g., oyster tables Figs. 1-3 . They account for 97-99 and 48-95 in spring and autumn, respectively. In contrast, soft substrates are still dominated by putatively native species Fig. 2 , such as Gracilaria spp., Zostera marina Linnaeus, and Z. noltii Horneman. However, it should be pointed out that Z. marina occurs throughout the northern hemisphere, so that...

Catch Bycatch of Sharks and Incidental Catch of Sea Turtles in the Reunion Based Longline Swordfish Fishery Southwest

Abstract Data from voluntary logbooks 5,884 longline sets collected between 1997 and 2000 were analyzed to assess the potential impact of the Reunion-based longline swordfish fishery South West Indian Ocean on sharks and on sea turtle populations. Blue shark Prionace glauca represented between 75 and 88 of the total catches of sharks studied. Bycatch discarding varied with species, ranging from low discards 2.6 for mako shark Isurus sp. to high discards for blue shark 86.5 . Estimation of the...

Takeshi YAMANE

Mathias Girault

Yamanety nara.kindai.ac.jp Goro YOSHIZAKI TUMSAT Tokyo University Marine Science and Technology, 5-7 Konan 4, Minato-ku 108-0024 Tokyo, Japon Prof. Catherine MARIOJOULS AgroParis Tech , Dr. Georges STORA CNRS, Centre d'Oceanologie de Marseille , Mrs Brigitte PANTAT and Mrs Katherine WALCH Reception Committee , Dr. Eric DELORT In Vivo IXSea Dr. Georges STORA, CNRS, Centre d'Oc anologie de Marseille Prof. YAGI Hiroki, Vice-President of SFJO Otaru University of Commerce, Otaru Dr. G rard VERON...