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水谷隆(Mizutani,I Takashi) 한국일본문화학회 2017 日本文化學報 Vol.0 No.73
Gon Gitsune, written by Nankichi Niimi, is now adapted in all of the fourth-grade Japanese textbooks. Its story is very familiar to most of us and close analyses of the text are done by lots of scholars. However, the story contains several elements that are not appropriate to close and logical analyses. At the same time it has a tendency to cause a gap between what we get by close analyses and what we understand through instinctive readings. Now that almost a century has passed since Gon Gitsune was published, some parts of the text are difficult to understand without explanations for the children that are supposed to be its readers. Such a work we may not give children as a teaching material to train the reading comprehension as ever, but we may reposition it as a classic juvenile literature. And furthermore I’d like to propose that we should reconsider it as an opportunity to examine our traditional culture.
水谷隆(Mizutani, Takashi) 한국일본문화학회 2018 日本文化學報 Vol.0 No.78
The kotobagaki (prefatory prose statements) for the 31-syllable Japanese poems of the four seasons in Kokinwakashu contain a lot of proper nouns, some of which seem to be unrelated to comprehending the meaning of the poems themselves. These proper nouns can be divided into two groups: utamakura (place names with allegorical resonance) and the names of the royal family members or places in the court. With utamakura, there are a lot of cases where the poets compose poems not only by directly observing scenery but also by imagining the scenery without actually going there. Utamakura were used in the kotobagaki for the poems of the four seasons to indicate whether the poet actually viewed a scene or created it from imagination, and it is supposed that readers of Kokinwakashu gained a greater appreciation for the poems knowing whether they depicted actual or imaginary scenes. However, no such enhanced appreciation comes from including the names of royal family members and places in the court it is supposed surmise that the editors of Kokinwakashu wrote kotobagaki asaway of reporting to the Throne in order to inform the emperor, the first reader of Kokinwakashu, whether a poem concerned the emperor-even if such information was not necessary to understand the poem.
水谷隆(Mizutani, Takashi) 한국일본문화학회 2019 日本文化學報 Vol.0 No.80
In the 31st essay of Tsurezuregusa, Kenko wrote that a person sent him a letter containing the phrase “konoyuki ikaga miru.” Most researchers interpret this phrase as “What do you feel about this snow?” The expression “ikaga miru” is often found in “kotobagaki” in the collections of tanka poems of the Heian era. In almost all cases, the expression is interpreted to demand that the poet compose a poem on a particular theme. Kenko had rich knowledge of Heian-era poems. Therefore, “konoyuki ikaga miru” in Tsurezuregusa should be interpreted as “compose a poem on the theme of this snow.” Kenko also wrote that receiving that letter was a pleasant memory. The phrase “ikaga miru” implying the demand for a poet to compose a poem was already regarded old-fashioned and almost disappeared after the Kamakura era. In Tsurezuregusa, the author often expressed the yearning for the olden days. Interchanging poems by taking advantage of the phrase “ikagamiru” was very desirable for Kenko. I would like to interpret this essay as stated above.
Edible Red Seaweed Hypnea asiatica Ameliorates High-Fat Diet-Induced Metabolic Diseases in Mice
Shigeru Murakami,Chihiro Hirazawa,Toshiki Mizutani,Takuma Ohya,Rina Yoshikawa,Ning Ma,Takahiko Ikemori,Takashi Ito,Chiaki Matsuzaki 한국식품영양과학회 2023 Journal of medicinal food Vol.26 No.11
Metabolic diseases, including obesity, diabetes, and fatty liver disease, are dramatically increasing around theworld. Seaweed is low in calories and rich in many active ingredients that are necessary for maintaining good health, and isexpected to be effective for preventing metabolic diseases. The purpose of this study was to examine the effects of a traditionalJapanese edible seaweed Hypnea asiatica (H. asiatica) on obesity, using a mouse model. H. asiatica was dried andpowdered, mixed with a high-fat diet, and fed to male C57BL/6J mice for 13 weeks. On the last day of the experiment, bloodsamples were collected under anesthesia and biochemical parameters such as lipids and adipokines were measured. Liver andadipose tissue were excised, weighed, and oxidant/antioxidant parameters were measured. Some mice were perfused with afixative solution containing formalin, and tissue specimens were prepared. A glucose tolerance test was used to assess insulinresistance. The inhibition of lipase activity was evaluated in vitro. Thirteen-week supplementation with H. asiatica suppressedbody weight gain, body fat accumulation, and blood glucose levels. H. asiatica also improved fatty liver and hypercholesterolemia,and reduced the oxidant and inflammatory parameters of serum and liver. H. asiatica increased fecal triglycerideexcretion and polyphenol-rich ethanol extract of H. asiatica inhibited lipase activity in vitro. These results suggest thatpolysaccharides and polyphenols in H. asiatica may ameliorate obesity and diabetes by inhibiting intestinal fat absorption andreducing oxidative stress and inflammation. H. asiatica may be useful in preventing metabolic diseases such as obesity,diabetes, and fatty liver.
Daisuke Kudo,Naohisa Miyakoshi,Michio Hongo,Yuji Kasukawa,Yoshinori Ishikawa,Takashi Mizutani,Yoichi Mizutani,Yoichi Shimada 대한골다공증학회 2021 Osteoporosis and Sarcopenia Vol.7 No.1
Objectives: Progressive and generalized loss of skeletal muscle mass (SMM) and strength are characteristics of sarcopenia. However, the impact of appendicular and trunk SMM and back extensor strength (BES) on spinal sagittal alignment remains unclear. Herein, we investigate the relationship between these factors and spinal sagittal alignment. Methods: In total, 202 women without vertebral fractures (median age, 66.9 years; interquartile range, 61.4e71.9 years) were analyzed at an orthopedic outpatient clinic. Pelvic incidence (PI), lumbar lordosis (LL), sagittal vertical axis (SVA), and pelvic tilt (PT) were measured on whole spine radiographs. Body mass index (BMI), appendicular and trunk relative SMM index, and BES were also evaluated. These measurements were compared between spinal sagittal alignment groups using the ManneWhitney U test. Finally, the factors contributing to abnormal alignment were analyzed using multiple logistic regression analysis. Results: BES was significantly lower in all abnormal sagittal alignment groups, as defined by PI-LL ( 10), SVA (4 cm), and PT (20) (all P < 0.001). On multivariate analysis, BES was a contributing factor for abnormal PI-LL (P < 0.001), SVA (P ¼ 0.001), and PT (P < 0.001). Conversely, a decrease in appendicular and trunk relative SMM index did not statistically affect abnormal spinal sagittal alignment. Conclusions: BES was associated with changes in spinal sagittal alignment; however, SMM, which is often used for diagnosing sarcopenia, did not affect spinal sagittal alignment.
한국산 톱다리개미허리노린재 집합페로몬 성분의 조성과 배합비율별 유인력
허혜순,윤지은,박정규,Huh, Hye-Soon,Yun, Ji-Eun,Takashi, Wada,Mizutani, Nobuo,Park, Chung-Gyoo 한국응용곤충학회 2008 한국응용곤충학회지 Vol.47 No.2
톱다리개미허리노린재(Riptortus clavatus Thunberg) (Heteroptera: Alydidae) 수컷 성충은 (E)-2-hexenyl (Z)-3-hexenoate (E2HZ3H), (E)-2-hexenyl (E)-2-hexenoate (E2HE2H) 및 tetradecyl isobutyrate(TI)의 세 성분으로 조성되는 집합페로몬을 분비하고, 그 페로몬에 동종의 암수 성충과 약충을 유인되며, 난기생봉인 Ooencyrtus nezarae (Hymenoptera: Encyrtidae)는 이 페로몬을 기주탐색에 이용한다. 본 연구에서는 한국의 진주와 익산, 일본의 Tsuhba와 Kumamoto지역에서 채집한 톱다리개미허리노린재의 집합페로몬 성분의 조성비를 조사하고, 각 성분의 배합비율별 유인력을 진주와 Kumamoto에서 조사하였다. 진주와 익산계통의 집합페로몬 조성 비율(E2HZ3H:E2HE2H:TI)은 각각 1:1.4:0.2, 1:0.8:0.2였으며, Tsuhba와 Kumamoto계통은 각각 1:2.8:0.2, 1:1.5:0.1이었다. 야외 유인력 검정에서, 1:1:1 (E2HZ3H:E2HE2H:TI=16.7:16.7:16.7mg/고무격막) 또는 1:1:0.5 (E2HZ3H:E2HE2H:TI=20:20:10mg/고무격막)로 배합한 페로몬이 1:5:1 (E2HZ3H:E2HE2H:TI = 7.1:35.7:7.1mg/고무격막)로 배합한 것보다 유인력이 높았다. Male adults of bean bug, Riptortus clavatus Thunberg (Heteroptera: Alydidae), release aggregation pheromone (AP) attracting both sexes of adult and nymphs, which its egg parasite, Ooencyrtus nezarae (Hymenoptera: Encyrtidae) exploits the pheromone to find host. The AP consists of three components; (E)-2-hexenyl (Z)-3-hexenoate (E2HZ3H), (E)-2-hexenyl (E)-2-hexenoate (E2HE2H), and tetradecyl isobutyrate (TI). We analyzed composition of the pheromone components of bean bugs from different geo graphical locations of Korea and Japan. The attractiveness of different blends of AP components to R. clavatus was also tested in the fields in Jinju, Korea and in Kumamoto, Japan. Composition ratios (E2HZ3H: E2HE2H:TI) of the AP of Jinju and Iksan populations were 1:1.4:0.2 and 1:0.8:0.2, and those of Tsukuba and Kumamoto populations were 1:2.8:0.2 and 1:1.5:0.1, respectively. In field tests, traps baited with ratio of 1:1:1 (E2HZ3H:E2HE2H:TI=16.7:16.7:16.7mg/rubber septum) and 1:1:0.5(E2HZ3H:E2HE2H:TI= 20:20:10mg/rubber septum) attracted significantly greater number of adult bugs than that of 1:5:1 (E2HZ3H:E2HE2H:TI=7.1:35.7:7.1mg/rubber septum).
POTENTIAL PROFILE MEASUREMENT OF CARBON NANOTUBE FETs BASED ON THE ELECTROSTATIC FORCE DETECTION
YUKI OKIGAWA,TAKEO UMESAKA,YUTAKA OHNO,SHIGERU KISHIMOTO,TAKASHI MIZUTANI 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2008 NANO Vol.3 No.1
We have measured the potential distribution on carbon nanotube (CNT) field-effect transistors (FETs) using electrostatic force microscopy (EFM) and Kelvin probe force microscopy (KFM). Clearer potential profiles were obtained by EFM than by KFM. When the CNT-FET is in the ON state, the EFM image shows uniform potential distribution along the CNT. In contrast, when the CNT-FET is in the OFF state, nonuniform potential image with dark spots are obtained. The dark spots can be attributed to the defects in the CNTs.