result 25027 件
| JaLCDOI | 10.18926/AMO/45269 |
|---|---|
| FullText URL | 65_2_105.pdf |
| Author | Tsuzuki, Takao| Okada, Hiroyuki| Nasu, Junichiro| Takenaka, Ryuta| Inoue, Masafumi| Kawano, Seiji| Kita, Masahide| Hori, Keisuke| Yamamoto, Kazuhide| |
| Abstract | The objectives of this study were to evaluate the accuracy of endoscopic ultrasonography (EUS) in local and regional staging of early gastric cancer, to analyze the factors influencing the accuracy of EUS, and to reveal the usefulness and problems of EUS in pre-treatment staging of gastric cancer. We examined 105 lesions in 104 patients with histologically confirmed gastric cancer and retrospectively evaluated them with EUS. The diagnostic accuracy, sensitivity, and specificity of EUS were determined by comparing the pre-treatment EUS with the postoperative histopathological findings. The overall diagnostic accuracy of EUS for the depth of cancer invasion was 86%. The overall sensitivity and specificity were 60% and 96%, respectively. The accuracy significantly declined in lesions located in the upper-third of the stomach (70%). Type 0-I lesions tended to be over-staged (12&), and the upper-third lesions tended to be under-staged (23%). The accuracy significantly declined in differentiated adenocarcinoma with massive submucosal invasion (56.5%). EUS is useful for evaluating the depth of gastric cancer invasion which determines the feasibility of endoscopic treatment. However, it is noteworthy that the diagnostic accuracy of the invasion depth diminished for lesions in the upper third of the stomach. |
| Keywords | endoscopic ultrasonography early gastric cancer accuracy sensitivity specificity |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2011-04 |
| Volume | volume65 |
| Issue | issue2 |
| Publisher | Okayama University Medical School |
| Start Page | 105 |
| End Page | 112 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2011 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 21519368 |
| Web of Science KeyUT | 000289818800006 |
| JaLCDOI | 10.18926/AMO/45268 |
|---|---|
| FullText URL | 65_2_97.pdf |
| Author | Tsuchihashi, Yuuki| Yorifuji, Takashi| Takao, Soshi| Suzuki, Etsuji| Mori, Shigeru| Doi, Hiroyuki| Tsuda, Toshihide| |
| Abstract | Seasonal influenza infection is a major challenge in public health. The term "seasonal influenza" refers to the typical increase in the number of influenza patients in the winter season in temperature zones. However, it is not clear how environmental factors within a single flu season affect influenza infection in a human population. Therefore, we evaluated the effects of temperature and humidity in the 2006-7 flu season on the onset of seasonal influenza using a case-crossover study. We targeted patients who attended one pediatric clinic in Okayama city, Japan and who were diagnosed as being infected with the seasonal influenza virus. Using 2 references (time-stratified and symmetric bidirectional design), we estimated the effects of average temperature and relative humidity from the onset day (lag0) to 10 days before (lag10). The total number of subjects was 419, and their onset days ranged from 26 December 2006 to 30 April 2007. While the onset was significantly associated with lower temperature, relative humidity was not related. In particular, temperatures before the 3-day incubation period had higher-magnitude odds ratios. For example, the odds ratio and 95% confidence interval for average temperature at time lag 8 was 1.12 (1.08-1.17) per 1.0℃ decrease. Low environmental temperature significantly increased the risk of seasonal influenza onset within the 2006-7 winter season. |
| Keywords | seasonal influenza in humans temperature humidity case-crossover study |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2011-04 |
| Volume | volume65 |
| Issue | issue2 |
| Publisher | Okayama University Medical School |
| Start Page | 97 |
| End Page | 103 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2011 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 21519367 |
| Web of Science KeyUT | 000289818800005 |
| JaLCDOI | 10.18926/AMO/45267 |
|---|---|
| FullText URL | 65_2_91.pdf |
| Author | Nagamatsu, Tomohiro| Sakoda, Akihiro| Kataoka, Takahiro| Ono, Toshiro| Yamaoka, Kiyonori| |
| Abstract | No research has been conducted on the radiation influence of tobacco on the alimentary system, although there have been some previous works on the respiratory system. In this study, the radioactive concentrations of 210Pb and 40K in a cigarette sample were first measured. The transfer factors of the nuclides from tobacco into smoke and solution (saliva and/or alcohol) were then examined. Moreover, the radiation doses from smoke inhalation were also evaluated. The radioactive concentrations of 210Pb and 40K in the cigarette tobacco were 0.01 and 0.3 Bq/cigarette. Since this 210Pb activity and the 210Po activity previously reported for the same sample were comparable, it can be concluded that there was a radioactive equilibrium between the 2 nuclides. The observed transfer factor of 210Pb (12%) into smoke was almost the same as that of 40K (15%), whereas the reported value for 210Po (60%) was significantly higher. The radiation doses due to inhalation of cigarette smoke varied from organ to organ, depending on the organotropic properties of the nuclide. For example, the kidneys, respiratory tract, and spleen showed relatively high doses from 210Pb and 210Po. The leaching rates indicated an inconsistent tendency related to solution types. This result could suggest that alcohol drinking, which is common in smokers, does not especially enhance the leaching characteristics. |
| Keywords | tobacco radionuclides smoking intake radiation exposure |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2011-04 |
| Volume | volume65 |
| Issue | issue2 |
| Publisher | Okayama University Medical School |
| Start Page | 91 |
| End Page | 95 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2011 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 21519366 |
| Web of Science KeyUT | 000289818800004 |
| JaLCDOI | 10.18926/AMO/45266 |
|---|---|
| FullText URL | 65_2_81.pdf |
| Author | Sasaki, Motofumi| Shikata, Kenichi| Okada, Shinichi| Miyamoto, Satoshi| Nishishita, Shingo| Usui Kataoka, Hitomi| Sato, Chikage| Wada, Jun| Ogawa, Daisuke| Makino, Hirofumi| |
| Abstract | Glomerular hyperfiltration is a common pathway leading to glomerulosclerosis in various kinds of kidney diseases. The 5/6 renal ablation is an established experimental animal model for glomerular hyperfiltration. On the other hand, low-grade inflammation is also a common mechanism for the progression of kidney diseases including diabetic nephropathy and atherosclerosis. Here we analyzed the gene expression profile in the remnant kidney tissues of 5/6 nephrectomized mice using a DNA microarray system and compared it with that of sham-operated control mice. The 5/6 nephrectomized mice showed glomerular hypertrophy and an increase in the extracellular matrix in the glomeruli. DNA microarray analysis indicated the up-regulated expression of various kinds of genes related to the inflammatory process in remnant kidneys. We confirmed the up-regulated expression of platelet factor-4, and monocyte chemoattractant protein-1, 2, and 5 in remnant kidneys by RT-PCR. The current results suggest that the inflammatory process is involved in the progression of glomerulosclerosis and is a common pathway of the pathogenesis of kidney disease. |
| Keywords | kidney inflammation chemokine |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2011-04 |
| Volume | volume65 |
| Issue | issue2 |
| Publisher | Okayama University Medical School |
| Start Page | 81 |
| End Page | 89 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2011 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 21519365 |
| Web of Science KeyUT | 000289818800003 |
| JaLCDOI | 10.18926/AMO/45265 |
|---|---|
| FullText URL | 65_2_71.pdf |
| Author | Sato, Kimiko| Oda, Megumi| |
| Abstract | A questionnaire survey was administered to 317 parents who attended infant health check-ups in City B, Okayama Prefecture between October, 2008 and March, 2009. The questionnaire survey studied 7 factors based on the PRECEDE-PROCEED Model. We analysed factors that affected oral health behaviour and attendance at scheduled dental health check-ups. The survey containing 22 items concerning matters such as 'QOL' and 'health problems' was posted to parents and guardians in advance, and then collected on the day of the medical check-up. The collected data was analysed using the t-test and Pearson's correlation coefficient, following which we conducted a covariance structure analysis. The results showed that dental health behaviour was directly affected by reinforcing factors, and indirectly associated with enabling and predisposing factors influenced by reinforcing factors. It was also shown that predisposing factors and oral health behaviour were associated with attendance at scheduled oral health check-ups. The results indicated that strengthening oral health education by sharing knowledge that acts as predisposing factors and introducing adaptations of oral health behaviour that that fit individual lives will lead to improved attendance at scheduled dental health check-ups. |
| Keywords | PRECEDE-PROCEED model dental check-ups dental health behaviour |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2011-04 |
| Volume | volume65 |
| Issue | issue2 |
| Publisher | Okayama University Medical School |
| Start Page | 71 |
| End Page | 80 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2011 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 21519364 |
| Web of Science KeyUT | 000289818800002 |
| JaLCDOI | 10.18926/AMO/45264 |
|---|---|
| FullText URL | 65_2_63.pdf |
| Author | Mizoguchi, Yoshinori| Suzuki, Etsuji| Tsuchida, Hiroaki| Tsuda, Toshihide| Yamamoto, Eiji| Nakase, Katsumi| Doi, Hiroyuki| |
| Abstract | There have been only 2 reports of a large-scale foodborne outbreak arising from Salmonella enterica serotype Braenderup infection worldwide. On August 9, 2008, an outbreak originating in boxed lunches occurred in Okayama, Japan. We conducted a cohort study of 786 people who received boxed lunches from a particular catering company and collected 644 questionnaires (response rate:82%). Cases were defined as those presenting with diarrhea (≧4 times in 24h) or fever (≧38℃) between 12 am on August 8 and 12 am on August 14. We identified 176 cases (women/men:39/137);younger children (aged＜10 years) appeared to more frequently suffer severe symptoms. Three food items were significantly associated with higher risk of illness;tamagotoji (soft egg with mixed vegetables and meat) (relative risk (RR):11.74, 95% confidence interval (CI):2.98-46.24), pork cooked in soy sauce (RR:3.17, 95% CI:1.24-8.10), and vinegared food (RR:4.13, 95% CI:1.60-10.63). Among them, only the RR of tamagotoji was higher when we employed a stricter case definition. Salmonella Braenderup was isolated from 5 of 9 sampled cases and 6 food handlers. It is likely that unpasteurized liquid eggs contaminated by Salmonella Braenderup and used in tamagotoji caused this outbreak. |
| Keywords | boxed lunch cohort study foodborne diseases Salmonella Braenderup unpasteurized liquid eggs |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2011-04 |
| Volume | volume65 |
| Issue | issue2 |
| Publisher | Okayama University Medical School |
| Start Page | 63 |
| End Page | 69 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2011 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 21519363 |
| Web of Science KeyUT | 000289818800001 |
| Author | 岡山大学環境理工学部| |
|---|---|
| Published Date | 2011-03-18 |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Volume | volume16 |
| Issue | issue1 |
| Content Type | Others |
| Author | 岡山大学環境理工学部| |
|---|---|
| Published Date | 2011-03-18 |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Volume | volume16 |
| Issue | issue1 |
| Content Type | Others |
| Author | 岡山大学環境理工学部| |
|---|---|
| Published Date | 2011-03-18 |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Volume | volume16 |
| Issue | issue1 |
| Content Type | Others |
| Author | 岡山大学環境理工学部| |
|---|---|
| Published Date | 2011-03-18 |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Volume | volume16 |
| Issue | issue1 |
| Content Type | Others |
| Author | 岡山大学環境理工学部| |
|---|---|
| Published Date | 2011-03-18 |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Volume | volume16 |
| Issue | issue1 |
| Content Type | Others |
| JaLCDOI | 10.18926/fest/44792 |
|---|---|
| Title Alternative | Improvement of complementary relationship-based evapotranspiration model |
| FullText URL | fest_016_035_039.pdf |
| Author | Nakamichi, Takeshi| Moroizumi, Toshitsugu| Miura, Takeshi| |
| Abstract | Advection-Aridity(AA) model can calculate actual evapotranspiration by using only meteorological data. However, comparing the model with Penman equation showed that AA model doesn’t properly evaluate evapotranspiration from urban moisture area. In urban area, Actual evaporation from water calculated by AA model(E) are much less than that by Penman equation(Epo). Multiple regression analysis using estimation results indicates that the difference between the models is due to the difference of the sensitivity to vapor pressure deficit between the models. To improve this problem, modification coefficient k, defined as k=a･albedo+b, is suggested. Regression coefficients a, b are determined as satisfying k=Epo/E for water and k=1 for urban surface. By using this coefficient k, evaporation from water is nearly equal to value estimated by Penman equation, while evaporation from urban surface is changeless. |
| Keywords | Complementary relationship Actual evapotranspiration Potential evapotranspiration Water budget |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2011-03-18 |
| Volume | volume16 |
| Issue | issue1 |
| Start Page | 35 |
| End Page | 39 |
| ISSN | 2185-3347 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002949472 |
| JaLCDOI | 10.18926/fest/44791 |
|---|---|
| Title Alternative | The Changes and Problems of Commercial Activities in terms of the Questionnaire Survey in Omote-cho as the Central Shopping Street in Okayama City |
| FullText URL | fest_016_007_033.pdf |
| Author | Han, Jing| Ichiminami, Fumikazu| |
| Abstract | The present study mainly studied some properties of retail stores on the central shopping streets in Okayama City while looking back on the transition of the commerce. Second, we investigated the actual conditions of most retail stores in Omote-cho in terms of the questionnaire survey. Third, we considered the problems and measures on retail stores, a little. The charm of the central shopping streets has decreased relatively in Okayama City due to the advancement of a large-scale stores and the location competition of convenience stores. The number of empty stores has increased and the amount of the pedestrian traffic, the value of sales, and the number of retail stores have shown the decreasing tendency in eight commercial blocs in Omote-cho. Therefore, the unique features in Omote-cho should be polished while esteeming the history and the culture. The charm and/or the atmosphere of traditional commercial blocs is requested to be created while sending new informations that continue to create young person's fashion and culture. |
| Keywords | Retail Stores Central Shopping Street Questionnaire Survey Omote-cho Okayama City |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2011-03-18 |
| Volume | volume16 |
| Issue | issue1 |
| Start Page | 7 |
| End Page | 33 |
| ISSN | 2185-3347 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002949471 |
| JaLCDOI | 10.18926/fest/44790 |
|---|---|
| Title Alternative | Validation of Dollar cost averaging investment method |
| FullText URL | fest_016_001_005.pdf |
| Author | Touji, Masayuki| Fueda, Kaoru| |
| Abstract | As a method of long term investment for private investor, the dollar cost averaging investment method is well known and seems to reduce the purchase cost because we purchase risk assets with same amount of monye every month, then we purchase many assets when the price of assets is low and few assets when the price is high. On the other hand, if the expectation of the return of the risk assets is positive, we have the maximum expectation of return when we purchase the risk assets with all of money to invest. To reduce the risk of investment, diversified investments are effective. However question whehter we use the dollar cost averaging investment method or investe money all at once to well-diversified risk assets remains. In this study, we validate the effecte of the ddollar cost averaging investment method by Monte Carlo simulation. |
| Keywords | Dollar cost averaging investment Monte Carlo simulation Stock price index |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2011-03-18 |
| Volume | volume16 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 5 |
| ISSN | 2185-3347 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002949470 |
| Author | 岡山大学環境理工学部| |
|---|---|
| Published Date | 2011-03-18 |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Volume | volume16 |
| Issue | issue1 |
| Content Type | Others |
| Author | 岡山大学環境理工学部| |
|---|---|
| Published Date | 2011-03-18 |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Volume | volume16 |
| Issue | issue1 |
| Content Type | Others |
| Author | 遊佐 徹| |
|---|---|
| Published Date | 2011-03-31 |
| Publication Title | 岡山大学文学部プロジェクト研究報告書 |
| Volume | volume17 |
| Content Type | Research Paper |
| JaLCDOI | 10.18926/44500 |
|---|---|
| FullText URL | mfe_045_054_059.pdf |
| Author | Nekado, Kenta| Takai, Yusuke| Nogami, Yasuyuki| Morikawa, Yoshitaka| |
| Abstract | Recently, pairing–based cryptographies have attracted much attention. For fast pairing calculation, not only pairing algorithms but also arithmetic operations in extension field should be efficient. Especially for final exponentiation included in pairing calculation, squaring is more important than multiplication. This paper considers squaring algorithms efficient for cubic extension field which is often used for pairing implementaions. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2011-01 |
| Volume | volume45 |
| Start Page | 54 |
| End Page | 59 |
| ISSN | 1349-6115 |
| language | English |
| Copyright Holders | Copyright © by the authors |
| File Version | publisher |
| NAID | 80021759252 |
| JaLCDOI | 10.18926/44499 |
|---|---|
| FullText URL | mfe_045_046_053.pdf |
| Author | Nogami, Yasuyuki| Yanagi, Erika| Izuta, Tetsuya| Morikawa, Yoshitaka| |
| Abstract | Recently, composite order pairing–based cryptographies have received much attention. The composite order needs to be as large as the RSA modulus. Thus, they require a certain pairing–friendly elliptic curve that has such a large composite order. This paper proposes an efficient algorithm for generating an ordinary pairing–friendly elliptic curve of the embedding degree 1 whose order has two large prime factors as the RSA modulus. In addition, the generated pairing–friendly curve has an efficient structure for the Gallant–Lambert–Vanstone (GLV) method. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2011-01 |
| Volume | volume45 |
| Start Page | 46 |
| End Page | 53 |
| ISSN | 1349-6115 |
| language | English |
| Copyright Holders | Copyright © by the authors |
| File Version | publisher |
| NAID | 120002905955 |
| JaLCDOI | 10.18926/44498 |
|---|---|
| FullText URL | mfe_045_036_045.pdf |
| Author | Kanatani, Kenichi| Niitsuma, Hirotaka| |
| Abstract | We present a new method for optimally computing the 3-D rotation from two sets of 3-D data. Unlike 2-D data, the noise in 3-D data is inherently inhomogeneous and anisotropic, reflecting the characteristics of the 3-D sensing used. To cope with this, Ohta and Kanatani introduced a technique called “renormalization”. Following them, we represent a 3-D rotation in terms of a quaternion and compute an exact maximum likelihood solution using the FNS of Chojnacki et al. As an example, we consider 3-D data obtained by stereo vision and optimally compute the 3-D rotation by analyzing the noise characteristics of stereo reconstruction. We show that the widely used method is not suitable for 3-D data. We confirm that the renormalization of Ohta and Kanatani indeed computes almost an optimal solution and that, although the difference is small, the proposed method can compute an even better solution. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2011-01 |
| Volume | volume45 |
| Start Page | 36 |
| End Page | 45 |
| ISSN | 1349-6115 |
| language | English |
| Copyright Holders | Copyright © by the authors |
| File Version | publisher |
| NAID | 80021759250 |
