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Himeji, Japan

Tohoku Electric Power Co., Himeji Ecotech Co. and Kanae Corporation | Date: 2011-03-02

Provided is foreign-object offshore processing system, including foreign-object inflow prevention devices configured to prevent inflow of foreign object into water intake and provided at interval. Each device includes: collecting pontoon serving as inlet of foreign object and provided to float on sea surface of pool defined by curtain wall, the pool being for drawing cooling sea water from sea toward water intake; bottom net spreading toward sea bottom on upstream side of water intake channel in triangular shape with collecting pontoon as vertex; longitudinal net fixed to two floating chains in suspended manner to spread out in surface area of sea, the two floating chains extending on sea surface from collecting pontoon in correspondence with two sides extending from vertex of triangular shape forming bottom net; and lateral net spreading between bottom net and at least portion of longitudinal net, wherein horizontal net cover covers interval between adjacent devices.

Suzuki K.S.,Japan Central Research Institute of Electric Power Industry | Yasuda A.,Ocean Planning Co. | Yasuda A.,Tokai Marinos Technology Co. | Murata Y.,Ocean Planning Co. | And 6 more authors.
Hydrobiologia | Year: 2015

Blooms of moon jellyfish Aurelia aurita s.l. occur in various vertical distribution patterns within the water column. Reasons for these distribution patterns have remained obscure. To quantify the influence of pycnocline and low dissolved oxygen (DO) on the vertical distribution of A. aurita aggregations, we investigated temperature, salinity, DO, and observed densities of A. aurita at 1–2 m depth intervals via video camera in a eutrophicated, enclosed bay, Mikawa Bay, Japan, for 3 years. During the observed period, stratification and hypoxic status of the bay varied seasonally and interannually due to climatic events, such as rainy season and typhoon passage. Both sharp pycnocline and low DO limited A. aurita vertical distribution. The more strongly stratified the water column, the more the upper boundary of A. aurita distribution was restricted. Bottom hypoxic water limited the lower boundary of A. aurita distribution. The DO threshold for in situ distribution was estimated to be ~2.5 mg l−1, which is much higher than the experimentally obtained, sublethal values identified in previous studies. Our results show that climatic events affect A. aurita vertical distribution through changes in the physical characteristics of the water column. © 2015 Springer International Publishing Switzerland

Takamura H.,Okayama University | Kikuchi T.,Okayama University | Endo N.,Himeji EcoTech Co. | Fukuda Y.,Himeji EcoTech Co. | Kadota I.,Okayama University
Organic Letters | Year: 2016

The first total syntheses of sarcophytonolide H and the originally proposed and correct structures of isosarcophytonolide D have been achieved via transannular ring-closing metathesis (RCM). These total syntheses culminated in the stereostructural confirmation of sarcophytonolide H and the reassignment of isosarcophytonolide D, respectively. The antifouling activity of the synthetic sarcophytonolide H and its analogues was also evaluated. © 2016 American Chemical Society.

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