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Auditory symptoms and psychological characteristics in adults with auditory processing disorders

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Journal of Otology 2017年第3期12卷 132-137页

作者： Chie Obuchi Sayaka Ogane yuki sato Kimitaka Kaga Department of Speech and Hearing Sciences International University of Health and WelfareTochigi3248501Japan

Most adults with auditory processing disorder(APD) often have trouble at work. It is possible that these listening problems in adults with APD influence their mental health. Thus, we have to take the subject's personality and mental status into consideration when supporting subjects with APD. However, studies on APD in adults are comparatively rare. In this study, we aimed to evaluate the relationships between the results of auditory tests, APD symptoms, and psychological status in subjects with APD. This study included 22 adults who complained of listening problems in everyday life, and they underwent auditory processing tests and were questioned regarding their psychological *** the results of the auditory processing tests, all subjects showed low scores on at least one test; therefore, they were suspected of having APD. Especially, the scores were low on the auditory memory test. Furthermore, subjects with APD show relatively similar psychological characteristics to each other. However, there was no significant relationship between the results of the auditory processing tests and psychological *** have to take notice of a subject's psychological state when they perceive their listening difficulties as a large-scale problem and feel anxious as a result. For this purpose, we should take psychological characteristics into consideration at the time of the medical examination interview before audio-psychological testing.

关键词： Auditory processing disorder Psychological characteristics Egogram Developmental disorder

Step-Loading Characteristics of Gas Engine Cogeneration System Using Doubly-Fed Induction Generator in Stand-Alone Operation

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Journal of Energy and Power Engineering 2014年第3期8卷 530-542页

作者： Tetsuji Daido Yushi Miura Toshifumi Ise yuki sato Division of Electrical Electronic and Information Engineering Graduate School of Engineering Osaka University Osaka565-0871 Japan Energy Technology Laboratory Osaka Gas Co. Ltd. Osaka 554-0051 Japan

Application of a DFIG （doubly-fed induction generator）, which is one of adjustable speed generators, to a gas engine cogeneration system has been investigated. To operate during a blackout as an emergency power supply is one of important roles for the gas engine eogeneration system. In the case of conventional constant speed of synchronous generator, the amount of the allowed step load is limited to around 30% of the rated power. On the other hand, DFIG is expected to increase the amount of step load during the stand-alone operation. In this paper, it has been demonstrated that an increase in the gas engine speed resulted in an increase in the maximum amount of step load using experimental equipment with a real gas engine. It has been concluded that the proposed system can improve the performance of an emergency power supply at step-loading.

关键词： Step load change doubly-fed induction generator gas engine cogeneration system stand-alone operation.

Predictive factors for the failure of endoscopic stent-instent self-expandable metallic stent placement to treat malignant hilar biliary obstruction

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World Journal of Gastroenterology 2017年第34期23卷 6273-6280页

作者： Mitsuru Sugimoto Tadayuki Takagi Rei Suzuki Naoki Konno Hiroyuki Asama Ko Watanabe Jun Nakamura Hitomi Kikuchi Yuichi Waragai Mika Takasumi yuki sato Takuto Hikichi Hiromasa Ohira Department of Gastroenterology Fukushima Medical UniversitySchool of Medicine Department of Endoscopy Fukushima Medical University Hospital

AIM To investigate the factors predictive of failure when placing a second biliary self-expandable metallic stents(SEMSs). METHODS This study evaluated 65 patients with an unresectable malignant hilar biliary obstruction who were examined in our hospital. Sixty-two of these patients were recruited to the study and divided into two groups: the success group, which consisted of patients in whom a stent-in-stent SEMS had been placed successfully, and the failure group, which consisted of patients in whom the stent-in-stent SEMS had not been placed successfully. We compared the characteristics of the patients, the stricture state of their biliary ducts, and the implemented endoscopic retrograde cholangiopancreatography(ERCP) procedures between the two *** The angle between the target biliary duct stricture and the first implanted SEMS was significantly larger in the failure group than in the success group. There were significantly fewer wire or dilation devices(ERCP catheter, dilator, or balloon catheter) passing the first SEMS cell in the failure group than in the success group. The cut-off value of the angle predicting stent-in-stent SEMS placement failure was 49.7 degrees according to the ROC curve(sensitivity 91.7%, specificity 61.2%). Furthermore, the angle was significantly smaller in patients with wire or dilation devices passing the first SEMS cell than in patients without wire or dilation devices passing the first SEMS cell. CONCLUSION A large angle was identified as a predictive factor for failure of stent-in-stent SEMS placement.

关键词： Endoscopic stent-in-stent self-expandable metallic stent placement Predictive factor Endoscopic retrograde cholangiopancreatography Malignant hilar biliary obstruction Self-expandable metallic stent

Non-Axisymmetric Mass Transfer Phenomenon behind an Orifice in a Curved Swirling Flow

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Journal of Flow Control, Measurement & Visualization 2013年第1期1卷 1-5页

作者： Tsuyoshi Takano Takayuki Yamagata yuki sato Nobuyuki Fujisawa Graduate School of Science and Technology Niigata University Niigata Japan Visualization Research Center Niigata University Niigata Japan

The purpose of this paper is to understand the mechanism of non-axisymmetric wall-thinning that caused a pipe break in the pipeline of the Mihama nuclear power plant in 2004. The wall thinning was caused by the flow accelerated corrosion which affects low carbon steel pipelines. The mass transfer rate measurement of the wall thinning behind an office in a curved swirling flow is carried out in a closed-circuit water tunnel using a benzoic acid dissolution method. The experimental results indicate that the high mass transfer rate is observed on one side of the pipe behind the orifice, which is similar to the observation of the wall-thinning rate in the Mihama case. This result suggests that the influence of the secondary flow in the long elbow combined with the swirling flow can produce the non-axisymmetric mass transfer phenomenon behind the orifice.

关键词： Pipe-Wall Thinning Flow Accelerated Corrosion Orifice Mass Transfer Nuclear Power Plant Benzoic Acid

A Modified Methodology to Evaluate Viscosity of Non-Newtonian Liquid Foods with a Flow Channel Instrument

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Journal of Food Science and Engineering 2013年第8期3卷 411-423页

作者： Masanori Yoshida Akimasa Soda Aya Togashi Yuta Egawa yuki sato Department of Applied Sciences Muroran Institute of Technology Muroran 050-8585 Japan Department of Chemistry and Chemical Engineering Niigata University Niigata 950-2181 Japan

Through experimental analysis of the liquid flows in a flow channel instrument, prompt evaluation of the physically defined viscosity of non-Newtonian liquid foods was investigated for development into a structurally simple and easy-to-use viscometer. For Newtonian and non-Newtonian test liquids, a relation between the friction coefficient and Reynolds number, which was dimensionless as derived from an expression of analysis as a gravity current, indicated a condition under which the flow in the instrument was laminar and under which an average shear rate was on the order of less than 1 s~. Prediction organized based on this empirical relation reproduced practically the flow curve determined for the liquid foods using a rotor type viscometer. Utilization of the channel instrument as a viscometer was formulated in terms of physical meanings of measurements such as the flow length and elapsed time.

关键词： Liquid food non-Newtonian viscosity flow channel flow analysis viscometer

Pancreatic stents for the prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis should be inserted up to the pancreatic body or tail

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World Journal of Gastroenterology 2018年第22期24卷 2392-2399页

作者： Mitsuru Sugimoto Tadayuki Takagi Rei Suzuki Naoki Konno Hiroyuki Asama yuki sato Hiroki Irie Ko Watanabe Jun Nakamura Hitomi Kikuchi Yuichi Waragai Mika Takasumi Takuto Hikichi Hiromasa Ohira Department of Gastroenterology School of Medicine Fukushima Medical University Department of Endoscopy Fukushima Medical University Hospital

AIM To investigate the location to which a pancreatic stent should be inserted to prevent post-endoscopic retrograde cholangiopancreatography(ERCP) pancreatitis(PEP).METHODS Over a ten-year period at our hospital, 296 patients underwent their first ERCP procedure and had a pancreatic stent inserted; this study included 147 patients who had ERCP performed primarily for biliary investigation and had a pancreatic stent inserted to prevent PEP. We dividedthese patients into two groups: 131 patients with a stent inserted into the pancreatic head(head group) and 16 patients with a stent inserted up to the pancreatic body or tail(body/tail group). Patient characteristics and ERCP factors were compared between the *** Pancreatic amylase isoenzyme(p-AMY) levels in the head group were significantly higher than those in the body/tail group [138.5(7.0-2086) vs 78.5(5.0-1266.5), P = 0.03] [median(range)]. No cases of PEP were detected in the body/tail group [head group, 12(9.2%)]. Of the risk factors for post-ERCP hyperamylasemia(≥ p-AMY median, 131 IU/L), procedure time ≥ 60 min [odds ratio(OR) 2.65, 95%CI: 1.17-6.02, P = 0.02) and stent insertion into the pancreatic head(OR 3.80, 95%CI: 1.12-12.9, P = 0.03) were identified as independent risk factors by multivariate *** Stent insertion up to the pancreatic body or tail reduces the risk of post-ERCP hyperamylasemia and may reduce the risk of PEP.

关键词： Pancreatic stent Endoscopic retrograde cholangiopancreatography Post-endoscopic retrograde cholangiopancreatography pancreatitis Post-endoscopic retrograde cholangiopancreatography hyperamylasemia Pancreatic body or tail

Biliary metal stents should be placed near the hilar duct in distal malignant biliary stricture patients

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World Journal of Gastroenterology 2022年第17期28卷 1860-1870页

作者： Mitsuru Sugimoto Tadayuki Takagi Rei Suzuki Naoki Konno Hiroyuki Asama yuki sato Hiroki Irie Yoshinori Okubo Jun Nakamura Mika Takasumi Minami Hashimoto Tsunetaka Kato Ryoichiro Kobashi Takumi Yanagita Takuto Hikichi Hiromasa Ohira Department of Gastroenterology Fukushima Medical UniversityFukushima 9601295Japan Department of Endoscopy Fukushima Medical University HospitalFukushima 9601295Japan

BACKGROUND Endoscopic biliary drainage using a self-expandable metallic stent(SEMS)has been widely performed to treat distal malignant biliary obstruction(DMBO).However,the optimal position of the stent remains *** To determine the ideal position for SEMS *** In total,135 DMBO patients underwent SEMS(uncovered or covered)placement over a ten-year period.A total of 127 patients with biliary obstruction between the junction of the cystic duct and Vater’s papilla were *** SEMS was placed through the upper common bile duct 2 cm from the biliary hilar duct in 83 patients(Hilar group)or near the top of the biliary obstruction in 44 patients(Lower group).Technical and functional success,adverse events,and risk factors for SEMS dysfunction were *** The stent patency period was significantly longer in the Hilar group than in the Lower group(P value<0.01).In multivariate analysis,the only statistically significant risk factor for SEMS dysfunction was being in the Lower group(hazard ratio:9.94,95%confidence interval:2.25–44.0,P<0.01).CONCLUSION A longer patency period was achieved by positioning the SEMS near the biliary hilar duct.

关键词： Endoscopic biliary drainage Malignant biliary obstruction Uncovered self-expandable metallic stent Covered self-expandable metallic stent Biliary hilar duct Patency period

Can the wet suction technique change the efficacy of endoscopic ultrasound-guided fine-needle aspiration for diagnosing autoimmune pancreatitis type 1? A prospective single-arm study

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World Journal of Clinical Cases 2020年第1期8卷 88-96页

作者： Mitsuru Sugimoto Tadayuki Takagi Rei Suzuki Naoki Konno Hiroyuki Asama yuki sato Hiroki Irie Ko Watanabe Jun Nakamura Hitomi Kikuchi Mika Takasumi Minami Hashimoto Tsunetaka Kato Takuto Hikichi Kenji Notohara Hiromasa Ohira Department of Gastroenterology Fukushima Medical UniversitySchool of MedicineFukushima 960-1295Japan Department of Endoscopy Fukushima Medical University HospitalFukushima 960-1295Japan Department of Anatomic Pathology Kurashiki Central HospitalKurashiki 710-8602Japan

BACKGROUND Other than surgery,endoscopic ultrasound-guided fine-needle aspiration(EUSFNA)is the only procedure for histologically diagnosing autoimmune pancreatitis(AIP).However,adequate specimens are difficult to ***,more adequate specimens were reported to be obtained with EUS-FNA with a wet suction technique(WEST)than with conventional *** To histologically diagnose AIP by EUS-FNA with a *** Eleven patients with possible type 1 AIP between February 2016 and August 2018 underwent EUS-FNA with a WEST(WEST group),with four punctures by 19 or 22 G *** a historical control,23 type 1 AIP patients who underwent no fewer than four punctures with 19 or 22 G needles were enrolled(DRY group).Patient characteristics and histological findings were compared between the two *** Three histopathological factors according to the International Consensus Diagnostic Criteria were significantly greater in the WEST group than the DRY group[lymphoplasmacytic infiltrate without granulocytic infiltration:9(81.8%)vs 6(26.1%),P=0.003,storiform fibrosis:5(45.5%)vs 1(4.3%),P=0.008,abundant(>10 cells/HPF)IgG4-positive cells:7(63.6%)vs 5(21.7%),P=0.026].Level 1 or level 2 histopathological findings were observed more often in the WEST group than in the DRY group[8(72.7%)vs 3(13.0%),P=0.001].CONCLUSION EUS-FNA with a WEST was more successful than standard EUS-FNA in histologically diagnosing AIP.

关键词： Autoimmune pancreatitis Endoscopic ultrasound-guided fine needle aspiration Wet suction technique

Push vs pull method for endoscopic ultrasound-guided fine needle aspiration of pancreatic head lesions: Propensity score matching analysis

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World Journal of Gastroenterology 2018年第27期24卷 3006-3012页

作者： Mitsuru Sugimoto Tadayuki Takagi Rei Suzuki Naoki Konno Hiroyuki Asama yuki sato Hiroki Irie Ko Watanabe Jun Nakamura Hitomi Kikuchi Yuichi Waragai Mika Takasumi Minami Hashimoto Yuko Hashimoto Takuto Hikichi Hiromasa Ohira Department of Gastroenterology Fukushima Medical UniversitySchool of Medicine Department of Endoscopy Fukushima Medical University Hospital Department of Diagnostic Pathology Fukushima Medical University

AIM To evaluate the efficacy of endoscopic ultrasoundguided fine needle aspiration(EUS-FNA) of pancreatic head cancer when pushing(push method) or pulling the echoendoscope(pull method).METHODS Overall, 566 pancreatic cancer patients had their first EUS-FNA between February 2001 and December 2017. Among them, 201 who underwent EUS-FNA for pancreatic head lesions were included in this study. EUS-FNA was performed by the push method in 85 patients, the pull method in 101 patients and both the push and pull methods in 15 patients. After propensity score matching(age, sex, tumor diameter, and FNA needle), 85 patients each were stratified into the push and pull groups. Patient characteristics and EUSFNA-related factors were compared between the two *** Patient characteristics were not significantly different between the two groups. The distance to lesion was significantly longer in the push group than in the pull group(13.9 ± 4.9 mm vs 7.0 ± 4.9 mm, P < 0.01). The push method was a significant factor influencing the distance to lesion(≥ median 10 mm)(P < 0.01). Additionally, tumor diameter ≥ 25 mm(OR = 1.91, 95%CI: 1.02-3.58, P = 0.043) and the push method(OR = 1.91, 95%CI: 1.03-3.55, P = 0.04) were significant factors contributing to the histological diagnosis of *** The pull method shortened the distance between the endoscope and the lesion and facilitated EUS-FNA of pancreatic head cancer. The push method contributed to the histological diagnosis of pancreatic head cancer using EUS-FNA specimens.

关键词： Endoscopic ultrasound-guided fine needle aspiration Pancreatic head Pancreatic cancer Push method Pull method