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Towards a Common Principle of Biological Control
Hidenori Kimura,Shingo Shimoda,Lu Gaohua,Reiko J. Tanaka 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper reviews the interplay between biology and control theory as a typical example of trans disciplinary knowledge integration. Control is a fundamental function of the living or ganism that works in all a spects of the life. Various control mechanisms are ubiquitously built-inatall levels of body structures of living or ganisms and work all the time to support the life. They are diversely different from one to an other with different material bases and structures, but there are many reasons to think that have some common ground and design principles. It is argued that a unified approach is exploited by focusing on a biological way of dealing with environmental changes to invest igatevarious controle chanisms of living or ganisms. The notion of compound control is proposed as a common principle of biological control based on the trans disciplinary nature of control theory.
Tamaki Tanaka,Kazuhiro Takehara,Natsumi Yamashita,Mika Okazawa-Sakai,Kazuya Kuraoka,Norihiro Teramoto,Kenichi Taguchi,Katsushige Yamashiro,Hidenori Kato,Tomoya Mizunoe,Rie Suzuki,Dan Yamamoto,Arisa Ue 대한부인종양학회 2022 Journal of Gynecologic Oncology Vol.33 No.5
Objective: To clarify the frequency of deficient mismatch repair (dMMR) in Japanese ovarian cancer patients, we examined microsatellite instability (MSI) status and immunohistochemistry (IHC) subtypes, including endometrioid carcinoma (EMC), clear cell carcinoma (CCC), or a mixture of both (Mix). Methods: We registered 390 patients who were diagnosed with EMC/CCC/Mix between 2006 and 2015 and treated at seven participating facilities. For 339 patients confirmed eligible by the Central Pathological Review Board, MSI, IHC, and MutL homolog 1 methylation analyses were conducted. The tissues of patients with Lynch syndrome (LS)-related cancer histories, such as colorectal and endometrial cancer, were also investigated. Results: MSI-high (MSI-H) status was observed in 2/217 CCC (0.9%), 10/115 EMC (8.7%), and 1/4 Mix (25%). Additionally, loss of MMR protein expression (LoE-MMR) was observed in 5/219 (2.3%), 16/115 (14.0%), and 1/4 (25%) patients with CCC, EMC, and Mix, respectively. Both MSI-H and LoE-MMR were found significantly more often in EMC (p<0.001). The median (range) ages of patients with MMR expression and LoE-MMR were 54 (30–90) and 46 (22–76) (p=0.002), respectively. In the multivariate analysis, advanced stage and histological type were identified as prognostic factors. Conclusion: The dMMR rate for EMC/CCC was similar to that reported in Western countries. In Japan, it is assumed that the dMMR frequency is higher because of the increased proportion of CCC.
Natural History of Chronic Intestinal Pseudo-obstruction and Need for Palliative Care
Kosuke Tanaka,Hidenori Ohkubo,Atsushi Yamamoto,Kota Takahashi,Yuki Kasai,Anna Ozaki,Michihiro Iwaki,Takashi Kobayashi,Tsutomu Yoshihara,Noboru Misawa,Akiko Fuyuki,Shingo Kato,Takuma Higurashi,Kunihiro 대한소화기 기능성질환∙운동학회 2023 Journal of Neurogastroenterology and Motility (JNM Vol.29 No.3
Background/AimsNatural history of chronic intestinal pseudo-obstruction (CIPO), a rare disease characterized by episodes of non-mechanical obstruction, is unclear in adults. This study evaluates the clinical course of CIPO and palliative care needs of patients. MethodsFrom October 2010 to September 2021, 74 patients who underwent cine MRI and had a definitive diagnosis of CIPO were prospectively included. We investigated disease etiology and outcomes, age at onset, nutritional status at consultation (body mass index and serum albumin), hydrogen breath test results, and total parenteral nutrition (TPN) during the disease course. ResultsForty-seven patients (64%) were women, with a mean age of 44 years at onset and 49 years at diagnosis. Primary CIPO was observed in 48 patients (65%). Secondary CIPO was observed in 26 cases (35%), of whom 18 (69%) had scleroderma. The mean body mass index, serum albumin level, and hydrogen breath test positivity rate were 17 kg/m2, 3.8 mg/dL, and 60%, respectively. TPN and invasive decompression therapy were required by 23 (31%) and 18 (24%) patients, respectively. Intestinal sterilization was performed in 51 (69%) patients and was effective in 33 (65%); of these, 28 (85%) were taking metronidazole. Seven (9%) patients used opioids. There were 9 deaths (12%), including 5 (56%) from infection and 2 (22%) from suicide. Of the deaths, 6 (67%) and 4 (44%) underwent TPN management and decompression therapy, respectively. Fifty-one patients (69%) wanted palliative care. ConclusionCIPO is a rare, severe, and under-recognized disease. Standardization of treatment strategies, including palliative care and psychiatric interventions, is desired.
Effect of Compost Application on Soil Temperature in Bare Andisol
Shin Deguchi,Hidenori Kawamoto,Osamu Tanaka,Akihide Fushimi,Sunao Uozumi 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
Soil temperature is an important factor influencing crop growth. Within limits, a higher soil temperature will promote crop growth, especially in cool climate regions. Compost application can increase soil temperature, however the mechanism of increasing soil temperature remains unclear. We conducted a pot experiment to examine the effects of compost application on soil temperature and evaporation in a bare Andisol. Pots with compost (16㎏ m?²) had a higher soil temperature and less evaporation than pots without compost. The decrease in evaporation and the increase in soil temperature by compost application were significantly correlated. We conclude that compost application increases soil temperature by decreasing evaporation from the soil surface.
( Hiroharu Kawakubo ),( Yuichiro Tanaka ),( Nanae Tsuruoka ),( Megumi Hara ),( Koji Yamamoto ),( Hidenori Hidaka ),( Yasuhisa Sakata ),( Ryo Shimoda ),( Ryuichi Iwakiri ),( Motoyasu Kusano ),( Kazuma 대한소화기기능성질환·운동학회 2016 Journal of Neurogastroenterology and Motility (JNM Vol.22 No.2
Background/Aims Upper gastrointestinal symptoms are more frequent and severe in female than in male outpatients in Japan. This study compared the upper gastrointestinal symptoms between healthy male and female young adult volunteers using a questionnaire. Methods In total, 581 third-grade medical students at Saga Medical School aged 22 to 30 years underwent upper gastrointestinal endoscopy and completed a questionnaire (frequency scale for symptoms of gastroesophageal reflux disease) from 2007 to 2013. Of these 581 students, 298 who were negative for Helicobacter pylori infection and had no particular lesions on endoscopic examination were enrolled in the present evaluation. A symptom was defined as positive when the subject evaluated the frequency of the symptom as sometimes, often, or always. Results The subjects comprised of 163 males (average age, 23.7 years) and 135 females (average age, 23.1 years). Upper gastrointestinal symptoms were more frequent in the females (75 of 135, 55.6%) than males (69 of 163, 42.3%; P < 0.05), with a high score for 4 symptoms (bloated stomach, heavy feeling in the stomach after meals, subconscious rubbing of the chest with the hand, and feeling of fullness while eating meals). Of the 144 subjects (69 males and 75 females) who complained of these symptoms, the females complained of dysmotility symptoms more often than did the males, but this was not true for reflux symptoms. Conclusions This study suggests that females develop upper gastrointestinal symptoms more frequently than do males among the young healthy Japanese population. (J Neurogastroenterol Motil 2016;22:248-253)
PROPAGATION PROCESSES OF NEWLY DEVELOPED PLASMA JET IGNITER
Ogawa, Masaya,Sasaki, Hisatoshi,Yosgida, Koji,Shoji, Hideo,Tanaka, Hidenori The Korean Society of Automotive Engineers 2002 International journal of automotive technology Vol.3 No.1
In plasma jet ignition, combustion enhancement effects occur toward the plasma jet issuing direction. Therefore, when the igniter is attached at the center of a cylindrically shaped combustion chamber, plasma jet should issue toward the round combustion chamber wall. The plasma jet igniter that had an annular circular orifice has been developed. The purpose of this study is to elucidate the relationship between the newly developed plasma Jet igniter configuration and combustion enhancement effects. In this newly developed plasma Jet igniter, flame front wrinkle appears on the flame front and flame propagates rapidly. Plasma Jet influences on the flame propagation far long period when the plasma jet igniter has issuing angle 90 degrees and large cavity volume, because the plasma jet only lasts several ms. However, in the early stage of combustion, flame front area of issuing angle 45 degrees is larger than that of 90 degrees, because the initial flame kernel is formed by the plasma jet.
PROPAGATION PROCESSES OF NEWLY DEVELOPED PLASMA JET IGNITER
Masaya Ogawa,Hisatoshi Sasaki,Koji Yoshida,Hideo Shoji,Hidenori Tanaka 한국자동차공학회 2002 International journal of automotive technology Vol.3 No.1
In plasma jet ignition, combustion enhancement effects occur toward the plasma jet issuing direction. Therefore, when the igniter is attached at the center of a cylindrically shaped combustion chamber, plasma jet should issue toward the round combustion chamber wall. The plasma jet igniter that had an annular circular orifice has been developed. The purpose of this study is to elucidate the relationship between the newly developed plasma jet igniter configuration and combustion enhancement effects. In this newly developed plasma jet igniter, flame front wrinkle appears on the flame front and flame propagates rapidly. Plasma jet influences on the flame propagation for long period when the plasma jet igniter has issuing angle 90 degrees and large cavity volume, because the plasma jet only lasts several ms. However, in the early stage of combustion, flame front area of issuing angle 45 degrees is larger than that of 90 degrees, because the initial flame kernel is formed by the plasma jet.<br/>
Jiamtae Pakanan,Hashiguchi Takuyu,Pongpiyapaiboon Sorawich,Lelapiyamit Intouch,Tanaka Hidenori,Hashiguchi Masatsugu,Akashi Ryo 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.4
Soybean is a major crop that is rich in proteins, lipids, and isofavones. Although the seeds are widely used for food and industrial purposes, soybean is recognized as a crop that does not store well, as storage conditions greatly afect seed quality. In this study, we selected 10 recombinant inbred lines (RILs) of soybean that are either sensitive or tolerant to storage, and examined the biochemical characteristics of the lines and their parents under storage-related stresses. The germination rates of all of the lines in the tolerant group were higher than those of the sensitive group for all storage conditions. Malondialdehyde (MDA) content was higher in the sensitive group than in the tolerant group, with the MDA content typically increasing under long-term storage conditions. Superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) activities were also more afected by long-term storage, but not by higher temperatures. Isofavones were also assayed and it was found that the aglycones (except glycitein) increased with an increase of storage temperature. Malonyl isofavone glucosides tended to decrease under long-term storage and high temperature conditions, suggesting that malonyl glucosides are converted to their aglycones. These results illustrate the mechanisms underlying storage-related stresses and the importance of screening for lines that can tolerate environmental stresses.
Hirosato Tamari,Shiro Oka,Takahiro Kotachi,Hajime Teshima,Junichi Mizuno,Motomitsu Fukuhara,Hidenori Tanaka,Akiyoshi Tsuboi,Ken Yamashita,Ryo Yuge,Yuji Urabe,Yasuhiko Kitadai,Koji Arihiro,Shinji Tanak 대한위암학회 2023 Journal of gastric cancer Vol.23 No.4
Purpose: Dental floss clip (DFC) traction-assisted endoscopic submucosal dissection (ESD) is widely performed owing to its simplicity. This study aimed to clarify the appropriate indications for the DFC traction method in early gastric cancer when ESD is performed by less-experienced endoscopists. Methods and Methods: We retrospectively analyzed 1,014 consecutive patients who had undergone gastric ESD performed by less-experienced endoscopists between January 2015 and December 2020. Gastric ESD was performed without DFC in all cases before December 2017 [DFC (−) group, 376 cases], and ESD was performed with DFC in all cases after January 2018 [DFC (+) group, 436 cases]. The procedure time and rates of en bloc resection, complete resection, and adverse events of the groups were compared. Results: The procedure time did not differ significantly between the 2 groups. However, when comparing lesions >20 mm, the procedure time in the DFC (+) group was significantly shorter than that in the DFC (−) group (95±46 vs. 75±31, P<0.01). The procedure time for lesions located in the greater curvature of the upper or middle stomach and lesions >20 mm located in the lesser curvature side of the stomach in the DFC (+) group was significantly shorter than that in the DFC (−) group. Conclusions: The indications for DFC during gastric ESD by less-experienced endoscopists include lesions located in the greater curvature of the upper or middle stomach, and lesions >20 mm located in the lesser curvature of the stomach.