检索结果-南通市图书馆

Virtual Reconstruction of Long Bone Fracture in Car-to-pedestrian Collisions Using Multi-body System and Finite Element Method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2011年第6期24卷 1045-1055页

作者： HAN Yong YANG Jikuang mizuno Koji State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan UniversityChangsha 410082China Department of Applied Mechanics Chalmers University of TechnologyGothenburg 41296Sweden Department of Mechanical Science and Engineering Nagoya UniversityNagoya 464-8601JapanState

Lower limb injures are frequently observed in passenger car traffic *** studies of the injuries focus on long bone fractures by using either cadaver component tests or simulations of the long bone kinematics,which lack in-depth study on the fractures in stress *** paper aims to investigate lower limb impact biomechanics in real-world car to pedestrian accidents and to predict fractures of long bones in term of stress parameter for femur,tibia,and *** the above purposes,a 3D finite element(FE) model of human body lower limb(HBM-LL) is developed based on human *** model consists of the pelvis,femur,tibia,fibula,patella,foot bones,primary tendons,knee joint capsule,meniscus,and *** FE model is validated by comparing the results from a lateral impact between simulations and tests with cadaver lower limb *** real-world accidents are selected from an in-depth accident database with detailed information about the accident scene,car impact speed,damage to the car,and pedestrian ***-body system(MBS) models are used to reconstruct the kinematics of the pedestrians in the two accidents and the impact conditions are calculated for initial impact velocity and orientations of the car and pedestrian during the *** FE model is used to perform injury reconstructions and predict the fractures by using physical parameters,such as von Mises stress of long *** calculated failure level of the long bones is correlated with the injury outcomes observed from the two accident *** reconstruction result shows that the HBM-LL FE model has acceptable biofidelity and can be applied to predict the risk of long bone *** study provides an efficient methodology to investigate the long bone fracture suffered from vehicle traffic collisions.

关键词： passenger car pedestrian accident lower limb FE model long bone fracture impact biomechanics

A Novel Sterilization Method Using Pulsed Discharge Plasma

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1998年第1期15卷 41-42页

作者： WANG Xi-lu Akira mizuno Shijin Katsura Department of Ecological Engineering Toyohashi University of TechnologyTempaku-choToyohashi441Japan Institute of Electrostatics Northeast Normal UniversityChangchun 130024

Pulsed discharge plasma(PDP)has been used to kill bacteria and the curves of the survival rate of bacteria against treatment time are *** structural change in the cell membrane is caused by PDP and the cell is thus **... 详细信息

关键词： PDP Plasma treatment

A Novel Estimating Method for Steering Efficiency of the Driver with Electromyography Signals

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2014年第3期27卷 460-467页

作者： LIU Yahui JI Xuewu HAYAMA Ryouhei mizuno Takahiro State Key Laboratory of Automotive Safety and Energy Tsinghua University Research and Development Center jtekt co.ltd.

The existing research of steering efficiency mainly focuses on the mechanism efficiency of steering system, aiming at designing and optimizing the mechanism of steering system. In the development of assist steering system especially the evaluation of its comfort, the steering efficiency of driver physiological output usually are not considered, because this physiological output is difficult to measure or to estimate, and the objective evaluation of steering comfort therefore cannot be conducted with movement efficiency perspective. In order to take a further step to the objective evaluation of steering comfort, an estimating method for the steering efficiency of the driver was developed based on the research of the relationship between the steering force and muscle activity. First, the steering forces in the steering wheel plane and the electromyography （EMG） signals of the primary muscles were measured. These primary muscles are the muscles in shoulder and upper ann which mainly produced the steering torque, and their functions in steering maneuver were identified previously. Next, based on the multiple regressions of the steering force and EMG signals, both the effective steering force and the total force capacity of driver in steering maneuver were calculated. Finally, the steering efficiency of driver was estimated by means of the estimated effective force and the total force capacity, which represented the information of driver physiological output of the primary muscles. This research develops a novel estimating method for driver steering efficiency of driver physiological output, including the estimation of both steering force and the force capacity of primary muscles with EMG signals, and will benefit to evaluate the steering comfort with an objective perspective.

关键词： electromyography muscle activity steering efficiency estimating

Optimization of causative factors using logistic regression and artificial neural network models for landslide susceptibility assessment in Ujung Loe Watershed, South Sulawesi Indonesia

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2019年第2期16卷 383-401页

作者： Andang Suryana SOMA Tetsuya KUBOTA Hideaki mizuno Faculty of Forestry Hasanuddin University Faculty of Agriculture Kyushu University

Landslide susceptibility maps(LSMs) play a vital role in assisting land use planning and risk mitigation. This study aims to optimize causative factors using logistic regression(LR) and an artificial neural network(ANN) to produce a LSM. The LSM is produced with 11 causative factors and then optimized using forward-stepwise LR(FSLR), ANN, and their combination(FSLR-ANN) until eight causative factors were found for each method. The ANN method produced superior validation results compared with LR. The ROC values for the training data set ranges between 0.8 and 0.9. On the other hand, validation with the percentage of landslide fall into LSM class high and very high, ANN method was higher(92.59%) than LR(82.12%). FSLR-ANN with nine causative factors gave the best validation results with respect to area under curve(AUC) values, and validation with the percentage of landslide fall into LSM class high and very high. In conclusion, ANN was found to be better than LR when producing LSMs. The best Optimization was combination of FSLR-ANN with nine causative factors and AUC success rate 0.847, predictive rate 0.844 and validation with landslide fall into high and very high class with 91.30%. It is an encouraging preliminary model towards a systematic introduction of FSLR-ANN model for optimization causative factors in landslide susceptibility assessment in the mountainous area of Ujung Loe Watershed.

关键词： Optimized causative factor Landslide, Logistic Regression Artificial neural network Indonesia

Photodimerization and photooxygenation of 9-vinylcarbazole catalyzed by titanium dioxide and magnesium perchlorate

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2010年第3期21卷 365-368页

作者： Hajime Maeda Mio Yamamoto Hideyuki Nakagawa Kazuhiko mizuno Division of Material Sciences Graduate School of Natural Science and TechnologyKanazawa University Department of Applied Chemistry Graduate School of EngineeringOsaka Prefecture University

Photoreaction of 9-vinylcarbazole in acetonitrile in the presence of titanium dioxide and a catalytic amount of magnesium perchlorate gave 3,6-di(9-carbazolyl)-1,2-dioxane as a photooxygenated product via photodimerization of *** photoreaction proceeds via an electron transfer mechanism,where magnesium perchlorate accelerated formation of the photo-oxygenated product.

关键词： Titanium dioxide Magnesium perchlorate 9-Vinylcarbazole Photooxygenation Photodimerization

Semisupervised Deep State-Space Model for Plant Growth Modeling

在线全文

学校读者我要写书评

暂无评论

Plant Phenomics 2020年第1期2卷 122-137页

作者： S.Shibata R.mizuno H.Mineno Graduate School of Integrated Science and Technology Shizuoka University3-5-1 JohokuNaka-kuHamamatsuShizuoka 432-8011Japan College of Informatics Academic InstituteShizuoka University3-5-1 JohokuNaka-kuHamamatsuShizuoka 432-8011Japan JST PRESTO4-1-8 HonchoKawaguchiSaitama 332-0012Japan

The optimal control of sugar content and its associated technology is important for producing high-quality crops more stably and ***-based reinforcement learning(RL)indicates a desirable action depending on the type of situation based on trialand-error calculations conducted by an environmental *** this paper,we address plant growth modeling as an environmental model for the optimal control of sugar *** the growth process,fruiting plants generate sugar depending on their state and evolve via various external stimuli;however,sugar content data are sparse because appropriate remote sensing technology is yet to be developed,and thus,sugar content is measured *** propose a semisupervised deep state-space model(SDSSM)where semisupervised learning is introduced into a sequential deep generative *** achieves a high generalization performance by optimizing the parameters while inferring unobserved data and using training data efficiently,even if some categories of training data are *** designed an appropriate model combined with model-based RL for the optimal control of sugar content using SDSSM for plant growth *** evaluated the performance of SDSSM using tomato greenhouse cultivation data and applied cross-validation to the comparative evaluation *** SDSSM was trained using approximately 500 sugar content data of appropriately inferred plant states and reduced the mean absolute error by approximately 38%compared with other supervised learning *** results demonstrate that SDSSM has good potential to estimate time-series sugar content variation and validate uncertainty for the optimal control of high-quality fruit cultivation using model-based RL.

关键词： Deep sugar optimal

Vulnerable atherosclerotic plaque features:findings from coronary imaging

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2021年第7期18卷 577-584页

作者： Osamu Kurihara Masamichi Takano Yasushi Miyauchi Kyoichi mizuno Wataru Shimizu Cardiovascular Center Chiba Hokusoh HospitalNippon Medical SchoolChibaJapan Mitsukoshi Health and Welfare Foundation TokyoJapan Division of Cardiology Nippon Medical SchoolTokyoJapan

Pathological studies have suggested that features of vulnerable atherosclerotic plaques likely to progress and lead to acute cardiovascular events have specific *** the progress of intravascular coronary imaging technology,some large prospective studies have detected features of vulnerable atherosclerotic plaques using these imaging ***,the rate of cardiovascular events,such as acute coronary syndrome,has been found to be considerably reduced in the limited follow-up period available in the statin ***,not all disrupted plaques lead to thrombus formation with clinical *** sub-occlusive or occlusive thrombus formation does not occur,a thrombus on a disrupted plaque will organize without any symptoms,forming a"healed plaque".Although vulnerable plaque detection using intracoronary imaging is focused on"thin-cap fibroatheroma"leading to plaque rupture,superficial plaque erosion is increasingly recognized;however,the underlying mechanism of thrombus formation on eroded plaques is not well *** of intravascular imaging,optical coherence tomography(OCT)has the highest image resolution and has enabled detailed characterization of the plaque in ***,we reviewed the status and limitations of intravascular imaging in terms of detecting vulnerable plaque through mainly OCT *** suggested that vulnerable plaque should be reconsidered in terms of eroded plaque and healed plaque and that both plaque and circulating blood should be assessed in greater detail accordingly.

关键词： coronary acute superficial

Surpassing 1,000,000 resolving points in chaotic Brillouin sensing

在线全文

学校读者我要写书评

暂无评论

Advanced Photonics 2023年第3期5卷 25-26页

作者： Yosuke mizuno Yokohama National University YokohamaJapan

Optical fiber sensors have played a pivotal role in structural health monitoring for over half a century,owing to their inherent advantages such as lightweight design,compactness,immunity to electromagnetic interference,and their ability to enable distributed sensing.1 Within this diverse range of sensors,Brillouin scattering has emerged as a widely adopted principle for distributed measurements of strain and temperature.

关键词： scattering Brillouin chaotic

Mesenchymal stem cells for cartilage regeneration in dogs

在线全文

学校读者我要写书评

暂无评论

World Journal of Stem Cells 2019年第5期11卷 254-269页

作者： Akari Sasaki Mitsuru mizuno Manabu Mochizuki Ichiro Sekiya Laboratory of Veterinary Emergency Medicine Graduate School of Agricultural and Life Sciences the University of Tokyo Bunkyo-ku Tokyo 113- 8657 Japan Center for Stem Cell and Regenerative Medicine Tokyo Medical and Dental University Bunkyo-ku Tokyo 113-8519 Japan

Articular cartilage damage and osteoarthritis (OA) are common orthopedic diseases in both humans and dogs. Once damaged, the articular cartilage seldom undergoes spontaneous repair because of its avascular, aneural, and alymphatic state, and the damage progresses to a chronic and painful situation. Dogs have distinctive characteristics compared to other laboratory animal species in that they share an OA pathology with humans. Dogs can also require treatment for naturally developed OA;therefore, effective treatment methods for OA are desired in veterinary medicine as well as in human medicine. Recently, interest has grown in regenerative medicine that includes the use of mesenchymal stem cells (MSCs). In cartilage repair, MSCs are a promising therapeutic tool due to their self-renewal capacity, ability to differentiate into cartilage, potential for trophic factor production, and capacity for immunomodulation. The MSCs from dogs (canine MSCs;cMSCs) share various characteristics with MSCs from other animal species, but they show some deviations, particularly in their differentiation ability and surface epitope expression. In vivo studies of cMSCs have demonstrated that intraarticular cMSC injection into cartilage lesions results in excellent hyaline cartilage regeneration. In clinical situations, cMSCs have shown great therapeutic effects, including amelioration of pain and lameness in dogs suffering from OA. However, some issues remain, such as a lack of regulations or guidelines and a need for unified methods for the use of cMSCs. This review summarizes what is known about cMSCs, including their in vitro characteristics, their therapeutic effects in cartilage lesion treatment in preclinical in vivo studies, their clinical efficacy for treatment of naturally developed OA in dogs, and the current limitations of cMSC studies.

关键词： Mesenchymal stem cell Dog Cartilage Osteoarthritis Regenerative medicine Veterinary medicine