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Hiroshi Shimatani,Ken Norizuki,Akihiro Ito,Masayoshi Kinoshita 한국영어평가학회 2009 영어평가 Vol.3 No.1
This is the fifth report on the research project which compared the older version of the TOEIC?? test with the new one. Through an examination of the ability measures based on the Rasch analysis, it is confirmed that there is a relatively high degree of parallelism between the two versions of the TOEIC?? in terms of examinees’ placement. A close examination of the exceptional measures revealed that 6.6% of the total 136 test takersmight have been misplaced due to personal factors such as lack of test time and lack of interest in answering questions. However, it is still too early to conclude that the observed differences are due to either test format or personal factors, or both.
Katagiri, Nobuko,Shimatani, Yuichi,Katagiri, Yasuo Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
The inverted retina of the Onchidium dorsal eye (DE) is composed only of ciliary-type photoreceptor cells (CC's). The outer segment (OS) of the CC is a concentric lamellar structure consisting of many modified ciliary membranes and stains positively with anti-$\beta$-tubulin antibody. Near the base of the OS there are about 30 basal bodies each connecting individually to a cilium. The cilia are rod-shaped at the base, progressing upwards to a flattened sheet-like shape with increasing surface area. Three-dimensional analysis on serial sections demonstrates the ladle-shape of a modified cilium. Many modified cilia wrap around each other like the leaves of a cabbage. Nine pairs of microtubules (MT's) are located regularly in a ring at the base of the cilium, gradually losing their regular arrangement towards the periphery, where they separate into two subgroups that are contained within two swollen portions of a modified cilium. Within the CC of the Onchidium DE, MT's in the modified cilium exist as two poles extending longitudinally in a thin expanded ciliary membrane. This arrangement may support the photoreceptive OS and serve to maintain its structural integrity.
Mitsuo Tokuhara,Masaaki Shimatani,Kazunari Tominaga,Hiroko Nakahira,Takuya Ohtsu,Katsuyasu Kouda,Makoto Naganuma 대한소화기내시경학회 2023 Clinical Endoscopy Vol.56 No.5
Background/Aims: Endoscopic resection of all colorectal adenomatous lesions with a low complication rate, simplicity, and negativeresiduals is challenging. Hence, we developed a new method called “non-injection resection using bipolar soft coagulation mode(NIRBS)” method, adapted for colorectal lesions. In addition, we evaluated the effectiveness of this method. Methods: We performed NIRBS throughout a 12-month period for all colorectal lesions which snare resection was acceptable withoutcancerous lesions infiltrating deeper than the submucosal layer. Results: A total of 746 resected lesions were included in the study, with a 4.5 mm mean size (range, 1–35 mm). The major pathologicalbreakdowns were as follows: 64.3% (480/746) were adenomas, and 5.0% (37/746) were intraepithelial adenocarcinomas (Tis lesions). Noresiduals were observed in any of the 37 Tis lesions (mean size, 15.3 mm). Adverse events included bleeding (0.4%) but no perforation. Conclusions: NIRBS allowed the resection of multiple lesions with simplicity because of the non-injection and without perforating dueto the minimal burn effect of the bipolar snare set in the soft coagulation mode. Therefore, NIRBS can be used to resect adenomatouslesions easily, including Tis lesions, from small to large lesions without leaving residuals.
Koji Ono,Takafumi Kumasawa,Keiichi Shimatani,Masatoshi Kanou,Ichiro Yamaguchi,Naoki Kunugita 대한방사선방어학회 2022 방사선방어학회지 Vol.47 No.2
Background: The present study investigated the radiation dose distribution of balloon kyphoplasty (BKP) among surgeons and medical staff, and this is the first research to observe such exposure in Japan. Materials and Methods: The study subjects were an orthopedic surgeon (n = 1) and surgical staff (n = 9) who intervened in BKP surgery performed at the National Hospital Organization Disaster Medical Center (Tokyo, Japan) between March 2019 and October 2019. Only disposable protective gloves (0.022 mmPb equivalent thickness or less) and trunk protectors were used, and no protective glasses or thyroid drapes were used. Results and Discussion: The surgery time per vertebral body was 36.2 minutes, and the fluoroscopic time was 6.8 minutes. The average exposure dose per vertebral body was 1.46 mSv for the finger (70 μm dose equivalent), 0.24 mSv for the lens of the eye (3 mm dose equivalent), 0.11 mSv for the neck (10 mm dose equivalent), and 0.03 mSv for the chest (10 mm dose equivalent) under the protective suit.The estimated cumulative radiation exposure dose of 23 cases of BKP was calculated to be 50.37 mSv for the fingers, 8.27 mSv for the lens, 3.91 mSv for the neck, and 1.15 mSv for the chest. Conclusion: It is important to know the exposure dose of orthopedic surgeons, implement measures for exposure reduction, and verify the safety of daily use of radiation during surgery and examination.