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Maruyama, Tsubasa,Kanai, Satoshi,Date, Hiroaki,Tada, Mitsunori Society for Computational Design and Engineering 2016 Journal of computational design and engineering Vol.3 No.3
Owing to our rapidly aging society, accessibility evaluation to enhance the ease and safety of access to indoor and outdoor environments for the elderly and disabled is increasing in importance. Accessibility must be assessed not only from the general standard aspect but also in terms of physical and cognitive friendliness for users of different ages, genders, and abilities. Meanwhile, human behavior simulation has been progressing in the areas of crowd behavior analysis and emergency evacuation planning. However, in human behavior simulation, environment models represent only "as-planned" situations. In addition, a pedestrian model cannot generate the detailed articulated movements of various people of different ages and genders in the simulation. Therefore, the final goal of this research was to develop a virtual accessibility evaluation by combining realistic human behavior simulation using a digital human model (DHM) with "as-is" environment models. To achieve this goal, we developed an algorithm for generating human-like DHM walking motions, adapting its strides, turning angles, and footprints to laser-scanned 3D as-is environments including slopes and stairs. The DHM motion was generated based only on a motion-capture (MoCap) data for flat walking. Our implementation constructed as-is 3D environment models from laser-scanned point clouds of real environments and enabled a DHM to walk autonomously in various environment models. The difference in joint angles between the DHM and MoCap data was evaluated. Demonstrations of our environment modeling and walking simulation in indoor and outdoor environments including corridors, slopes, and stairs are illustrated in this study.
Immune activation and radioprotection by Echinacea purpurea (American herb)
Mishima, Satoshi,Gu, Yeun-Hwa,Saito, Kiyoto,Yamashita, Takenori,Maruyama, Hiroe,Inoue, Makoto,Ahn, Kyoo-Seok Kyung Hee Oriental Medicine Research Center 2004 Oriental pharmacy and experimental medicine Vol.4 No.3
The effect of immune activation by Echinacea purpurea was investigated by measuring total immunoglobulin (Ig) G, IgM. and the radioprotective effect of immune activation by Echinacea purpurea was investigated by measuring T lymphocyte subsets in the peripheral blood of mice following whole body irradiation. Echinacea purpurea activated macrophages to stimulate $IFN-{\gamma}$ production in association with the secondary activation of T lymphocytes, resulting in a decrease in IgG and IgM production. Cytokines released from macrophages in mouse peripheral blood after Echinacea purpurea administration activated helper T cells to proliferate. In addition, activated macrophages in association with the secondary T lymphocyte activation increased $IFN-{\gamma}$ production and stimulated proliferation of cytotoxic T cells and suppressor T cells, indicating the activation of cell-mediated immune responses.
An Approach to Building Factory Scheduling Expert System By Using Model-Based AI tool
Tadashi Maruyama,Satoshi Konno 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
In this paper, we propose a method to manage production system easily for operators when either equipments or products are changed. And we explain the scheduling Al tool which realizes the proposal method. The tool's knowledge expression consists of models, rules. mathematical expression and fuzzy logic. The model expresses the relations between products and manufacture, and properties of products. The models are separated into three type, equipment model, operation model, and product model. These models are classified by applicable fields as the assembly process or continuous plant process. The model expression of each type is based on object oriented paradigm. We report systems utilizing our approach.
( Shuntaro Maruyama ),( Tomohito Gohda ),( Yusuke Suzuki ),( Hitoshi Suzuki ),( Yuji Sonoda ),( Saki Ichikawa ),( Zi Li ),( Maki Murakoshi ),( Satoshi Horikoshi ),( Yasuhiko Tomino ) 대한신장학회 2016 Kidney Research and Clinical Practice Vol.35 No.4
Background: IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis worldwide. Tonsillectomy plus steroid pulse therapy has been able to induce clinical remission in early-stage IgAN. However, its possible effect on systemic and local cytokines and tubular markers has not been fully investigated. Methods: We obtained serum and urine samples from 38 patients just before renal biopsy and third steroid pulse therapy. Markers of tubular damage such as N-acetyl-β- D-glucosaminidase, and kidney injury molecule-1 and inflammation such as interleukin (IL)-6, monocyte chemotactic protein (MCP)-1, intercellular adhesion molecule (ICAM)-1, and vascular cell adhesion molecule (VCAM)-1 were measured by immunoassay. Results: Before renal biopsy, only urinary inflammatory markers, except MCP-1, were associated with glomerular (proteinuria) and/or tubular damage markers. Proteinuria, hematuria, and estimated glomerular filtration rate dramatically improved after therapy. In addition, levels of serum IL-6 and ICAM-1 and all urinary markers declined significantly; however, serum MCP-1 and VCAM-1 levels did not. None of the urinary markers correlated with the serum inflammatory markers. Conclusion: Tonsillectomy plus steroid pulse therapy for patients with IgAN might be useful for improving not only glomerular damage marker but also tubular damage markers through the improvement of local renal inflammation. Copyright ⓒ 2016. The Korean Society of Nephrology. Published by Elsevier. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Inoue Takaki,Maki Satoshi,Furuya Takeo,Okimatsu Sho,Yunde Atsushi,Miura Masataka,Shiratani Yuki,Nagashima Yuki,Maruyama Juntaro,Shiga Yasuhiro,Inage Kazuhide,Orita Sumihisa,Eguchi Yawara,Ohtori Seiji 대한척추외과학회 2023 Asian Spine Journal Vol.17 No.4
Study Design: Retrospective study.Purpose: To compare the radiographic risk factors for decreased cervical lordosis (CL) after laminoplasty, focusing on the difference between cervical spondylotic myelopathy (CSM) and cervical ossification of the posterior longitudinal ligament (C-OPLL).Overview of Literature: A few reports compared the risk factors for decreased CL between CSM and C-OPLL although these two pathologies have their characteristics.Methods: This study included 50 patients with CSM and 39 with C-OPLL who underwent multi-segment laminoplasty. Decreased CL was defined as the difference between preoperative and 2-year postoperative neutral C2–7 Cobb angles. Radiographic parameters included preoperative neutral C2–7 Cobb angles, C2–7 sagittal vertical axis (SVA), T1 slope (T1S), dynamic extension reserve (DER), and range of motion. The radiographic risk factors were investigated for decreased CL in CSM and C-OPLL. Additionally, the Japanese Orthopedic Association (JOA) score was assessed preoperatively and 2 years postoperatively.Results: C2–7 SVA (<i>p</i> =0.018) and DER (<i>p</i> =0.002) were significantly correlated with decreased CL in CSM, while C2–7 Cobb angle (<i>p</i> =0.012) and C2–7 SVA (<i>p</i> =0.028) were correlated with decreased CL in C-OPLL. Multiple linear regression analysis revealed that greater C2–7 SVA (<i>B</i> =0.22, <i>p</i> =0.026) and small DER (<i>B</i> =−0.53, <i>p</i> =0.002) were significantly associated with decreased CL in CSM. By contrast, greater C2–7 SVA (<i>B</i> =0.36, <i>p</i> =0.031) was significantly associated with decreased CL in C-OPLL. The JOA score significantly improved in both CSM and C-OPLL (<i>p</i> <0.001).Conclusions: C2–7 SVA was associated with a postoperative decreased CL in both CSM and C-OPLL, but DER was only associated with decreased CL in CSM. Risk factors for decreased CL slightly differed depending on the etiology of the condition.
Wataru Katagiri,Daisuke Saito,Satoshi Maruyama,Makiko Ike,Hideyoshi Nisiyama,Takafumi Hayashi,Jun-ichi Tanuma,Tadaharu Kobayashi 대한악안면성형재건외과학회 2023 Maxillofacial Plastic Reconstructive Surgery Vol.45 No.-
Background Masticatory muscle tendon-aponeurosis hyperplasia (MMTAH) is a relatively newly identified clinical condition that manifests as trismus with a square-shaped mandible. Herein, we report a case of MMATH that was initially misdiagnosed for polymyositis due to trismus and simultaneous lower limb pain, with literature review. Case presentation A 30-year-old woman had a history of lower limb pain after exertion for 2 years. Initial physical examination had been performed at the Department of General Medicine in our hospital. There was also redness in the hands and fingers. Although polymyositis was suspected, it was denied. The patient visited our department for right maxillary wisdom tooth extraction. Clinical examination revealed that the patient had a square-shaped mandible. The maximal mouth opening was 22 mm. There was no temporomandibular joint pain at the time of opening. Furthermore, there was awareness of clenching while working. Panoramic radiography revealed developed square mandibular angles with flattened condyles. Computed tomography showed enlarged masseter muscles with high-density areas around the anterior and lateral fascia. Magnetic resonance imaging also showed thickened tendons and aponeuroses on the anterior surface and inside bilateral masseter muscles. Finally, the patient was diagnosed with MMTAH. Bilateral aponeurectomy of the masseter muscles with coronoidectomy and masseter muscle myotomy was performed under general anesthesia. The maximum opening during surgery was 48 mm. Mouth opening training was started on day 3 after surgery. Histopathological examination of the surgical specimen showed that the muscle fibers were enlarged to 60 μm. Immunohistochemistry testing for calcineurin, which was associated with muscle hypertrophy due to overload in some case reports, showed positive results. Twelve months after surgery, the mouth self-opening and forced opening were over 35 mm and 44 mm, respectively. Conclusions Herein, we report a case of MMATH. Lower limb pain due to prolonged standing at work and overload due to clenching were considered risk factors for symptoms onset of MMATH.