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无绝缘REBCO饼型线圈变形引起的特性电阻变化

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Acta Mechanica Sinica 2024年第4期40卷 21-26页

作者： So noguchi Hokkaido University Kita 14 Nishi 9Kita-kuSapporo060-0814Japan

近年来稀土钡铜氧化物(REBCO)饼型线圈在高磁场产生中的变形引起了人们的关注.一些考虑线圈变形的电流模拟显示了线圈变形可能影响屏蔽电流分布的可能性.屏蔽电流会产生强大的电磁力,对REBCO饼型线圈造成机械损伤.然而,线圈变形也可能... 详细信息

近年来稀土钡铜氧化物(REBCO)饼型线圈在高磁场产生中的变形引起了人们的关注.一些考虑线圈变形的电流模拟显示了线圈变形可能影响屏蔽电流分布的可能性.屏蔽电流会产生强大的电磁力,对REBCO饼型线圈造成机械损伤.然而,线圈变形也可能影响无绝缘(NI)REBCO饼型线圈的接触电阻,通常称为“特性电阻”.NI特性电阻是NI REBCO饼型线圈稳定性的一个重要因素.因此,有必要研究随着线圈形状变形的NI接触电阻.本文展示了外部场充电和NI线圈充电期间NI特性电阻的变化.

关键词：屏蔽电流接触电阻线圈变形铜氧化物 REBCO 电阻变化机械损伤电磁力

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

Relationship between Nonexercise Activity Thermogenesis and Calf Circumference in Older Women

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Open Journal of Therapy and Rehabilitation 2024年第3期12卷 213-223页

作者： Michio Wachi Takumi Jiroumaru Mika Suzuki Shinichi noguchi Ayako Satonaka Department of Physical Therapy Bukkyo University Kyoto City Japan Department of Physical Therapy Biwako Professional University of Rehabilitation Higashiomi City Japan Graduate School of Medicine Nagoya University Nagoya City Japan Faculty of Health and Medical Science Aichi Syukutoku University Nagakute City Japan

Purpose: Frailty is a state of declined vitality of the body and mind with age in which life functions are impaired. In addition, there is a difference in the susceptibility of older women to frailty compared with that of older men. Therefore, assessing and encouraging physical activity in older adults before they become frail is essential. We aimed to clarify the relationship between calf circumference and body composition and assess the potential association between calf circumference and physical activity indices in older women. Methods: This cross-sectional study included 18 healthy older adults (age 69.0 ± 5.7 years). The physical characteristics, calf circumference, body composition, calf muscle thickness, and physical activity questionnaire that included items on exercise-related activity thermogenesis (EAT) and nonexercise activity thermogenesis (NEAT) were assessed. The association between calf circumference and these additional measures was examined. Results: Positive and significant correlations were found between the calf circumference and body weight, body mass index (BMI), skeletal muscle mass, skeletal muscle mass index, calf muscle thickness, total questionnaire score, and NEAT score (r = 0.66 - 0.87). However, no significant correlations were observed between the calf circumference and EAT scores. Conclusion: Calf circumference in older women may reflect NEAT activity. Improving NEAT activity is an important health-promoting factor in older women.

关键词： Nonexercise Activity Thermogenesis Frailty Calf Circumference Older Women

Nevanlinna theory and Diophantine approximation

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Science China Mathematics 2005年第Z1期48卷 146-155页

作者： Junjiro noguchi Graduate School of Mathematical Sciences University of Tokyo KomabaMeguroTokyo 153-8914Japan

We discuss the analogue of the Nevanlinna theory and the theory of Diophantine approximation, focussing on the second main theorem and abc-conjecture.

关键词： Nevanlinna theory, Diophantine approximation.

Development and evaluation of a general-purpose electric off-road robot based on agricultural navigation

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International Journal of Agricultural and Biological Engineering 2014年第5期7卷 14-21页

作者： Yin Xiang Noboru noguchi School of Agricultural and Food Engineering Shandong University of TechnologyZibo 255049China Bio-production Engineering Graduate School of AgricultureHokkaido UniversityKita-kuSapporo 060-8589Japan

The aim of this study was to develop a general-purpose electric off-road robot vehicle by using automatic control *** vehicle prototype used in this study was a commercially-purchased electricity utility vehicle that was designed originally for manual operations.A manipulating unit,an automatic steering system and a speed control system were developed and integrated into a CAN-bus network for operating on functions(forward,reverse,park or stop),realizing desired steering angles and maintaining a constant speed,respectively,in the mode of *** autonomous navigation system based on RTK-GPS and IMU was used to evaluate the performance of the newly developed off-road *** tests showed that the maximum error in speed control was 0.29 m/s and 0.22 m/s for speed tests and autonomous runs,*** lateral offset was less than 10 cm in terms of straight paths,indicating that the automatic steering control system was of good performance.

关键词： electric off-road robot automatic control automatic steering speed control autonomous navigation system field test

Adaptive turning control for an agricultural robot tractor

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International Journal of Agricultural and Biological Engineering 2018年第6期11卷 113-119页

作者： Hao Wang Noboru noguchi Graduate School of Agriculture Hokkaido UniversityKita 9 Nishi 9SapporoHokkaido065-8589Japan Research Faculty of Agriculture Hokkaido UniversityKita 9 Nishi 9SapporoHokkaido065-8589Japan

An adaptive turning algorithm for a four-wheel robot tractor in the headland is presented in this *** navigation sensors consisted of an inertial measurement unit and a real-time kinematic global positioning system(GPS).An objective function based on weights was used to create the navigation path,connecting by continuous *** asymmetric steering mechanism was then taken into consideration with a vehicle *** follow the path accurately,the slide movement of the robot and the steering rate were taken into account by estimating the turning radius in real *** addition,the vehicle model was tuned based on the results of each ***,the turning control algorithm was optimized on the basis of the specific conditions in the *** experiments showed that the robot tractor approached the next path with an average lateral deviation of 3.9 cm at a speed of 1.2 m/s during a *** to a conventional turning scheme,the time consumption and turning trajectory were decreased by 17%and 21%,respectively.

关键词： autonomous tractor path planning dynamic circle-back turning switch-back turning robot tractor reinforcement learning

Improved inclination correction method applied to the guidance system of agricultural vehicles

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International Journal of Agricultural and Biological Engineering 2020年第6期13卷 183-194页

作者： Ricardo Ospina Noboru noguchi Research Faculty of Agriculture Hokkaido UniversitySapporo 060-8589 HokkaidoJapan

This research introduces a new inclination correction method with increased accuracy applied to the guidance system of an agricultural *** method considers the geometry of a robot tractor and uses an Inertial Measurement Unit(IMU)to correct the lateral error of the RTK-GPS antenna measurements raised by the tractor's inclinations.A parameters optimization experiment and an automatic guidance experiment under real working conditions were used to compare the accuracy of a traditional correction method with the new correction method,by calculating the RMSE of the lateral error and the error reduction *** additional tuned correction method was found by using a simple analytical method to find the optimal variables that reduced the lateral error to a *** results indicate that the new correction method and the tuned correction method display a significant error reduction percentage compared to the traditional correction *** methods could correct the GPS lateral error caused by the roll inclinations in *** resulting lateral deviation caused by the tractor's inclinations could be reduced up to 23%for typical travelling speeds.

关键词： inclination correction method guidance system agricultural vehicles robot tractor IMU RTK-GPS precision farming

MULTIAXIAL CREEP-FATIGUE LIFE EVALUATION UNDER PROPORTIONAL LOADING

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Acta Metallurgica Sinica(English Letters) 2004年第4期17卷 355-360页

作者： Y.noguchi M.Miyahara Corporate Research & Development Laboratories Sumitomo Metal Industries Ltd. Amagasaki Hyogo 660-0891 JapanCorporate Research & Development Laboratories Sumitomo Metal Industries Ltd. Amagasaki Hyogo 660-0891 Japan

A new method was proposed for the multiaxial creep-fatigue life evaluation under proportional loadings. Because this method was derived from the strain range partitioning method with a multiaxiality factor, it was possible to consider the influence of both creep-fatigue interaction and multiaxial stress state on fatigue life. In order to predict the combined axial-torsional fatigue life the damage under combined loading was defined as linear summation of the damages under axial loading and torsional loading. Axial-torsional creep-fatigue tests were carried out using tubular specimens of 316LC austenitic stainless steel and the ferritic rotor steel. This rotor steel was developed for the permanent magnet type eddy current retarder in heavy trucks. Experimentally obtained lives of both steels were well corresponded with the lives predicted by the proposed method. It was found that the proposed method was effective in multiaxial fatigue life evaluation under proportional creep-fatigue loadings.

关键词： multiaxial fatigue creep-fatigue proportional loading life evaluation

Design and performance of a robotic arm for farm use

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International Journal of Agricultural and Biological Engineering 2019年第1期12卷 146-158页

作者： Ali Roshanianfard Noboru noguchi Tatsuki Kamata Department of Biosystems Engineering Faculty of Agriculture and Natural ResourcesUniversity of Mohaghegh ArdabiliArdabilIran Laboratory of Vehicle Robotics Research Faculty of AgricultureHokkaido UniversitySapporo 060-8589Japan

Smart technology which is the backbone of high-efficiency production opens a new horizon in sustainable ***,harvesting the heavy-weight crops is considered an arduous job,specifically in Japan which has faced a serious labor shortage in agricultural *** this study,a development procedure and evaluation of a 4-degrees-of-freedom articulated robotic arm is presented,and it provides an appropriate infrastructure to develop a smart harvesting robotic system for heavy-weight crops such as pumpkin,watermelon,melon,and *** robotic arm designed as an actuating unit of a robot tractor for the agricultural outdoor *** this regard,different degree of freedom was evaluated under consideration of economic and technical indexes to find an optimized *** controlling algorithm of the system was developed by consideration of kinematic and dynamic aspects of the real-world condition.A special harvesting methodology was developed based on optimum harvesting conditions.A controlling unit was developed by using PLC *** performance,accuracy,payload per weight,and repeatability of the system were *** payload per weight,overall average accuracy,and overall average repeatability of the robot were 0.21,1.85 mm,and±0.51 mm,*** results indicated that the developed system had a front access,harvesting length,and workspace volume of 2.024 m,1.36 m,and 8.27 m^(3),*** of the significant advantages of the proposed robotic arm is its capability to use in different industries with minimum modifications.

关键词： agricultural robot robotic arm harvesting modeling simulation design