- 著者
- 松沼 瑞樹 山川 武 星野 和夫
- 出版者
- 一般社団法人 日本魚類学会
- 雑誌
- 魚類学雑誌 (ISSN:00215090)
- 巻号頁・発行日
- pp.19-003, (Released:2019-07-24)
- 参考文献数
- 18
Previous Japanese records of Chelidoperca margaritifera Weber, 1913 (Perciformes: Serranidae) were reviewed, and all available Japanese specimens previously reported as that species found to be either C. santosi Williams and Carpenter, 2015 or C. tosaensis Matsunuma, Yamakawa and Williams, 2017. No evidence was found of C. margaritifera occurring in Japanese waters, the species instead being known solely from the holotype, collected off New Guinea. Chelidoperca santosi is characterized by three scale rows between the lateral line and middle of the spinous dorsal-fin base; two pairs of dark spots on the snout; a pair of dark spots on the lower jaw tip; the interorbital scales just reaching or extending slightly beyond mid-orbit but not reaching level with the posterior nasal pores; scales on the mandibular ventral surface extending anteriorly onto the dentary; and enlarged canine-like teeth on both jaws, thereby being distinguished from all Japanese congeners [C. hirundinacea (Valenciennes in Cuvier and Valenciennes, 1831), C. pleurospilus (Günther, 1880) and C. tosaensis]. The standard Japanese name “Minamihimekodai” should be applied to C. santosi.
1 0 0 0 OA 九州北東部におけるシマドジョウ属魚類の分布パターンとその成立過程に関する考察
- 著者
- 星野 和夫
- 出版者
- 社団法人日本鉄鋼協会
- 雑誌
- 鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)
- 巻号頁・発行日
- vol.69, no.8, pp.998-1005, 1983-06-01
- 被引用文献数
- 1 3
The flow stress (σ) of unstable austenitic stainless steels is studied by comparing stable austenitic and martensitic stainless steels. (1) The root of dislocation density (√<ρ>) obtained by X-ray analysis in stable γ-phase increases with strain (ε) and the expression of ε as a function of √<ρ> is parabolic. √<ρ> of γ phase mixed with deformation-induced martensite (α′) increases with the root of α′ phase volume fraction (V_<α′^<1/2>>) in addition to the above relation. (2) σ of unstable steels is intermediate of the values caluculated by "equal stress model" and "equal strain model" and it becomes to take the values estimated by equal strain model with increase of α′-phase. In this case, the higher the strength of α′ phase is and the larger the volume of α′ phase is, the higher is the ununiformity of strain between γ and γ′ phase. In the case that the strength of α′phase is almost the same, the smaller the volume of γ′ phase is, the smaller is the ununiformity of strain between γ and α′phase. (3) σ is affected not only by the volume but also by the strength of α′ phase and inversely plastic flow depresses α′-transformation to inhibit the enhancement of higher σ values due to high strength of α′-phase.