著者

中山 昭彦 Akihiko Nakayama

出版者

学習院大学文学部国語国文学会

雑誌

学習院大学国語国文学会誌 (ISSN:02864436)

巻号頁・発行日

no.65, pp.1-4, 2022-03-15

---

佐々木隆先生古稀記念特輯号

著者

中山 昭彦 久末 信幸

出版者

公益社団法人 土木学会

雑誌

土木学会論文集B1(水工学) (ISSN:2185467X)

巻号頁・発行日

vol.71, no.4, pp.I_577-I_582, 2015 (Released:2016-01-29)

参考文献数

17

被引用文献数

3

---

In order to conduct a Large-Eddy Simulation (LES) of turbulent free-surface flows using a smoothed particle hydrodynamics (SPH) method, models needed to account for the turbulence effects and the motion near solid walls have been studied. A method that employs an eddy viscosity in a realistic viscous stress model and the turbulent wall model based on the wall stress is proposed. The model parameters are verified in laminar and fully developed open channel turbulent flows. The laminar flow is calculated well but the results of the turbulent flow are not as good as those of fixed grid methods. Detailed flow characteristics of turbulent flow of collapsing water column observed experimentally are found to be reproduced very well compared with the results of existing methods that do not consider turbulence or the viscous effects.

著者

中山 昭彦

出版者

日本文学協会

雑誌

日本文学 (ISSN:03869903)

巻号頁・発行日

vol.49, no.11, pp.13-27, 2000-11-10

---

赤木桁平の遊蕩文学批判を契機に巻き起こるこの論争は、当時、隆盛をきわめていた人格主義を、文学作品の評価へと応用する契機となるだけではない。それとともに、当時、売れていると認識されていた長田幹彦らの小説を、枠付け差別化するための基準の"創出"という側面をもっている。そしてそれは、「通俗小説」というジャンルの緩やかな成型を促すとともに、その対極におかれる「芸術小説」の再定義の機会をなすものである。

著者

中山 昭彦 井上 喜洋 田原 陽三 小林 正三 横山 雅仁

出版者

公益社団法人 日本水産学会

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.64, no.4, pp.636-644, 1998-07-15 (Released:2008-02-29)

参考文献数

6

---

It is said that lines could be still made with silk as used to be done in Japan as a countermeasure against pollution by nylon fishing lines. However, it is not clear whether or not silk fishing lines would be decomposed biologically in marine environments. To answer this question, seawater was collected at six stations at the entrance of Tokyo Bay and sterile raw silk threads (27-denier) were added to these seawaters. The final concentrations of raw silk threads in the seawaters were 0.5%. The six seawaters with raw silk threads [silk-decomposing seawater media (SDS media)] were incubated for 2 months at 20°C. The tensile strengths of the raw silk threads in the three SDS media were clearly decreased at least after 2-month incubation. The degree of decomposition of the raw silk threads, which were observed visually, correlated approximately with the ammonia contents of the SDS media. When the incubated raw silk threads were examined microscopically, it was shown that the raw silk threads were split into more and finer filaments after 1-and 2-month incubation. These results suggest the possibility of decomposition of raw silk threads in marine environments.

著者

中山 昭彦

出版者

日本近代文学会

雑誌

日本近代文学 (ISSN:05493749)

巻号頁・発行日

no.43, pp.p1-15, 1990-10