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国外铁道车辆 2010年第2期47卷 41-46页

作者： yasuaki sakamoto 周贤全

介绍了日本使用零相电流控制、具有磁性阻尼功能的线性发电机的研发和试验概况。

关键词：超导磁悬浮线性发电机磁性阻尼日本

Predictive model of risk factors of High Flow Nasal Cannula using machine learning in COVID-19

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Infectious Disease Modelling 2022年第3期7卷 526-534页

作者： Nobuaki Matsunaga Keisuke Kamata Yusuke Asai Shinya Tsuzuki yasuaki sakamoto Shinpei Ijichi Takayuki Akiyama a Jiefu Yu Gen Yamada Mari Terada Setsuko Suzuki Kumiko Suzuki Sho Saito Kayoko Hayakawa Norio Ohmagari AMR Clinical Reference Center National Center for Global Health and MedicineTokyoJapan DataRobot Inc. TokyoJapan Disease Control and Prevention Center National Center for Global Health and MedicineTokyoJapan Biostatistics Division Center for Research Administration and SupportNational Cancer CenterTokyoJapan

With the rapid increase in the number of COVID-19 patients in Japan,the number of patients receiving oxygen at home has also increased rapidly,and some of these patients have *** efficient approach to identify high-risk patients with slowly progressing and rapidly worsening COVID-19,and to avoid missing the timing of therapeutic intervention will improve patient prognosis and prevent medical *** admitted to medical institutions in Japan from November 14,2020 to April 11,2021 and registered in the COVID-19 Registry Japan were *** factors for patients with High Flow Nasal Cannula invasive respiratory management or higher were comprehensively explored using machine ***-specific cohorts were created,and severity prediction was performed for the patient surge *** were able to obtain a model that was able to predict severe disease with a sensitivity of 57%when the specificity was set at 90%for those aged 40e59 years,and with a specificity of 50%and 43%when the sensitivity was set at 90%for those aged 60e79 years and 80 years and older,*** were able to identify lactate dehydrogenase level(LDH)as an important factor in predicting the severity of illness in all age *** machine learning,we were able to identify risk factors with high accuracy,and predict the severity of the *** plan to develop a tool that will be useful in determining the indications for hospitalisation for patients undergoing home care and early hospitalisation.

关键词： COVID-19 Machine learning Severity Risk prediction Japan

基于励磁逆变器的线性电机轨道制动机状态监测方法

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国外铁道机车与动车 2022年第5期 30-36页

作者： [日]yasuaki sakamoto 刘志荣(译) 于伟业(校) 不详

对应用线性感应电机技术的轨道制动机进行了研究。这种制动机能够产生无接触制动力。除了非接触制动外,使用动态制动时,不需要车载电源来激励制动机。为将这种制动机投入使用,需要开发检查装置可靠性的自诊断方法。因此,考虑使用励磁逆... 详细信息

对应用线性感应电机技术的轨道制动机进行了研究。这种制动机能够产生无接触制动力。除了非接触制动外,使用动态制动时,不需要车载电源来激励制动机。为将这种制动机投入使用,需要开发检查装置可靠性的自诊断方法。因此,考虑使用励磁逆变器而不是专用传感器的状态监测方法,并在用轨道轮的试验台上进行了试验。试验结果表明,所设计的方法能够起到自诊断作用。

关键词：轨道制动机线性电机逆变器状态监测

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线性轨道制动机无逆变器励磁方法

国外铁道机车与动车 2023年第5期 27-33页

作者： [日]yasuaki sakamoto 周贤全(译) 于伟业(校) 不详

对应用线性感应电机技术的轨道制动机进行了研究。这种制动机能够产生无接触制动力。除了非接触制动机外,使用动态制动时,不需要车载电源来激励制动机。为降低成本,需要研发一种不使用励磁逆变器的动态制动方法。为此,用感应电机的自励... 详细信息

对应用线性感应电机技术的轨道制动机进行了研究。这种制动机能够产生无接触制动力。除了非接触制动机外,使用动态制动时,不需要车载电源来激励制动机。为降低成本,需要研发一种不使用励磁逆变器的动态制动方法。为此,用感应电机的自励磁现象设计了一种无逆变器励磁方法,并在轨道轮试验台上进行了试验。结果表明,所设计的方法对低成本励磁系统极为有用。

关键词：轨道制动机线性电机励磁系统感应电机电容器自励磁现象

Bicuspidization Using the Open-Sleeve Technique for Congenital Aortic Stenosis during Infancy

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Congenital Heart Disease 2024年第2期19卷 177-183页

作者： Toshi Maeda Hiroki Ito Keiichi Hirose Kisaburo sakamoto Departments of Cardiovascular Surgery Mt.Fuji Shizuoka Children’s HospitalShizuoka420-8660Japan

Congenital aortic stenosis(cAS)frequently requires intervention during the neonatal or infantile ***,surgical repair is challenging because of the narrow surgical *** performed bicuspidization using the open-sleeve technique for cAS with a unicuspid aortic valve in two ***,the patients were doing well without reintervention for the aortic valve for 8 and 6 years,*** aortic annular diameter increased along with somatic *** for neonates or infancy can be performed safely using the open-sleeve technique as its midterm results have been satisfactory.

关键词： Aortic valve repair infant bicuspidization open-sleeve technique

New method of local adjuvant therapy with bicarbonate Ringer’s solution for tumoral calcinosis: A case report

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World Journal of Orthopedics 2024年第3期15卷 302-309页

作者： Takashi Noguchi Akio sakamoto Kensaku Kakehi Shuichi Matsuda Department of Orthopaedic Surgery Graduate School of MedicineKyoto UniversityKyoto 606-8507Japan

BACKGROUND Tumoral calcinosis is a condition characterized by deposits of calcium phosphate crystals in extra-articular soft tissues,occurring in hemodialysis *** phosphate crystals are mainly composed of hydroxyapatite,which is highly infilt-rative to tissues,thus making complete resection *** adjuvant method to remove or resolve the residual crystals during the operation is *** SUMMARY A bicarbonate Ringer’s solution with bicarbonate ions(28 mEq/L)was used as the *** resecting calcium phosphate deposits of tumoral calcinosis as much as possible,while filling with the solution,residual calcium phosphate deposits at the pseudocyst wall can be gently scraped by fingers or gauze in the operative field.A 49-year-old female undergoing hemodialysis for 15 years had swelling with calcium deposition for 2 years in the shoulders,bilateral hip joints,and the right foot.A shoulder lesion was resected,but the calcification remained and early re-deposition was *** the difficulty of a complete rection,we devised a bicarbonate dissolution method and excised the foot *** resection of the calcified material,the residual calcified material was washed away with bicarbonate Ringer’s *** The bicarbonate dissolution method is a new,simple,and effective treatment for tumoral calcinosis in hemodialysis patients.

关键词： Tumoral calcinosis Adjuvant therapy Bicarbonate Ringer’s solution Surgery Case report

Low skeletal muscle mass and high visceral adiposity are associated with recurrence of acute cholecystitis after conservative management:A propensity score-matched cohort study

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Hepatobiliary & Pancreatic Diseases International 2024年第1期23卷 64-70页

作者： Yudai Koya Michihiko Shibata Yuki Maruno Yoshitaka sakamoto Shinji Oe Koichiro Miyagawa Yuichi Honma Masaru Harada Department of Gastroenterology Kyushu Rosai HospitalMoji Medical Center3-1 HigashiminatomachiMoji-kuKitakyushu 801-8502Japan Third Department of Internal Medicine School of MedicineUniversity of Occupational and Environmental HealthKitakyushu 807-8555Japan Department of Surgery Kyushu Rosai Hospital Moji Medical CenterKitakyushu 801-8502Japan

Background:Recurrent acute cholecystitis(RAC)can occur after non-surgical treatment for acute cholecystitis(AC),and can be more severe in comparison to the first episode of *** skeletal muscle mass or adiposity have various effects in several *** aimed to clarify the relationship between RAC and body ***:Patients with AC who were treated at our hospital between January 2011 and March 2022 were *** psoas muscle mass and adipose tissue area at the third lumbar level were measured using computed tomography at the first episode of *** areas were divided by height to obtain the psoas muscle mass index(PMI)and subcutaneous/visceral adipose tissue index(SATI/VATI).According to median VATI,SATI and PMI values by sex,patients were divided into the high and low PMI *** performed propensity score matching to eliminate the baseline differences between the high PMI and low PMI groups and analyzed the cumulative incidence and predictors of ***:The entire cohort was divided into the high PMI(n=81)and low PMI(n=80)*** the propensity score-matched cohort there were 57 patients in each *** Kaplan-Meier analysis,the low PMI group and the high VATI group had a significantly higher cumulative incidence of RAC than their counterparts(log-rank P=0.001 and 0.015,respectively).In a multivariate Cox regression analysis,the hazard ratios of low PMI and low VATI for RAC were 5.250(95%confidence interval 1.083-25.450,P=0.039)and 0.158(95%confidence interval:0.026-0.937,P=0.042),***:Low skeletal muscle mass and high visceral adiposity were independent risk factors for RAC.

关键词： Acute cholecystitis Low skeletal muscle mass Recurrent acute cholecystitis Sarcopenia Visceral adiposity

Investigation of HO_(2) uptake mechanisms onto multiple-component ambient aerosols collected in summer and winter time in Yokohama,Japan

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Journal of Environmental Sciences 2024年第3期137卷 18-29页

作者： Jun Zhou Yukiko Fukusaki Kentaro Murano Tania Gautam Yu Bai Yoshimi Inomata Hiroaki Komatsu Mayuko Takeda Bin Yuan Min Shao Yosuke sakamoto Yoshizumi Kajii Institute for Environmental and Climate Research Jinan UniversityGuangzhou 511443China Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation forEnvironmental Quality Guangzhou 511443China Graduate School of Global Environmental Studies Kyoto UniversityKyoto606-8501Japan Yokohama Environmental Science Research Institute Yokohama Kanagawa 221–0024Japan Department of Chemistry University of AlbertaAlbertaEdmonton T6G 2G2Canada Graduate School of Human and Environmental Studies Kyoto UniversityKyoto 606-8501Japan Kanagawa Environmental Research Center Kanagawa 254-0014Japan Center for Regional Environmental Research National Institute for Environmental StudiesIbaraki305-8506Japan

The heterogeneous loss of HO_(2)radicals onto ambient aerosols plays an important role in tropospheric ***,sparse investigation of the dominating parameters controlling the HO_(2)uptake coefficients onto ambient aerosols(γHO_(2))has largely hindered the application of the measuredγHO_(2)to the global spatial *** we induced an offine method using LFP-LIF technique to measure the kinetics of HO_(2)uptake onto ambient aerosols collected in summertime and wintertime in Yokohama city,a regional urban site near Tokyo,*** controlling the dominating parameters which infuenceγHO_(2),we were able to investigate the detailed HO_(2)uptake *** characterized the chemical composition of the collected ambient aerosols,including organics,inorganics,transition metals ions,*** modeledγHO_(2)using different *** show thatγHO_(2)increased with the increase in RH,and the aerosol states(“dry”or wet/aqueous)have large effects onγHO_(2).With fixed RH and aerosol chemical composition,γHO_(2)was highly dependent on pH and inversely correlated with[HO_(2)]_*** combing the measuredγHO_(2)values with the modeled ones,we found that both the HO_(2)self-reaction and transition metal-catalyzed reactions should be accounted for to yield a single parameterization to predictγHO_(2),and different chemical compositions may have collective effects onγHO_(2).Results may serve for extending theγHO_(2)values measured at one observation site to different environmental conditions,which will help us to achieve more accurate modeling results concerning secondary pollutant formation(i.e.,ozone).

关键词： HO_(2)uptake kinetics Offine method Impacting factors Mechanism

Relationship between nutritional therapy and beneficial bacteria ratio in severe disease

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Journal of Acute Disease 2024年第1期13卷 26-30页

作者： Kento Nakayama Hiroyuki Koami Yuichiro sakamoto Advanced Emergency Care Center Saga University HospitalSaga 849-0851Japan

Objective:To evaluate relationship between changes in the beneficial bacteria in intensive care unit(ICU)patients and nutritional therapy ***:Ten patients aged≥18 years admitted to the ICU between January and December 2020,were *** enteral nutrition was defined as early achievement of target calorie intake through enteral *** ratio of beneficial bacteria at the first and second bowel movements after each patient’s admission was calculated and the patients were classified into the increase or decrease *** all patients,five each were in the increase and decrease *** investigated patient background,changes in sequential organ failure assessment(SOFA)and acute physiology and chronic health evaluation(APACHE)Ⅱscores,nutritional doses or methods,and clinical ***:No relationship was found between changes in the ratio of beneficial bacteria and changes in SOFA/APACHEⅡscores at the time of *** rate of good enteral nutrition was significantly higher in the increase group than in the decrease group(4/5 vs.0/5,P=0.01).Conclusions:An increase in beneficial bacteria may be significantly related to the early establishment of enteral *** the future,accumulating cases may make it possible to establish a new nutritional strategy for critically ill patients from an intestinal microbiota perspective.

关键词： Beneficial bacteria Enteral nutrition Parenteral nutrition Intensive care unit Good enteral nutrition Severe disease Nutritional therapy

Hand Cooling Enhances the Proprioceptive Drift during Rubber Hand Illusion

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Journal of Behavioral and Brain Science 2024年第7期14卷 210-226页

作者： Masanori sakamoto Yuta Akaike Kazuya Tatsumi Hirotoshi Ifuku Division of Health and Physical Education Graduate School of Education Kumamoto University Kumamoto City Japan Lifelong Sports and Welfare Course Faculty of Education Kumamoto University Kumamoto City Japan

Background: The neural representation of the body is easily altered by integrating multiple sensory signals in the brain. The “Rubber Hand Illusion” (RHI) is one of the most popular experimental paradigms to investigate this phenomenon. During this illusion, ownership of a rubber hand is temporarily induced. It was shown that external and continuous cooling of the palm enhanced the RHI, suggesting an association between altered the autonomic nervous system regulation and altered the sense of ownership of a specific limb. Purpose: To investigate whether artificially cooling the entire hand for a short period affects the magnitude of the illusion. Methods: Participants immersed their entire hand in cool, cold, or warm water for 1 min before the RHI procedure. Results: We found that cooling the entire hand enhanced the proprioceptive drift during the RHI but not the subjective feeling of ownership. In contrast, warming and intense cooling of the entire hand did not affect the RHI strength. Conclusion: Our results suggest that transient and moderate cooling of the entire hand was sufficient in enhancing the illusory disembodiment of one’s own hand.

关键词： Hand Temperature Cooling Rubber Hand Illusion Ownership Proprioceptive Drift