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Ninjurin-1: a biomarker for reflecting the process of neuroinflammation after spinal cord injury

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Neural Regeneration Research 2021年第7期16卷 1331-1335页

作者： Poornima d.E.Weerasinghe-Mudiyanselage Jeongtae kim Yuna choi Changjong Moon Taekyun Shin Meejung Ahn department of Veterinary Anatomy College of Veterinary Medicine and Veterinary Medical Research InstituteJeju National UniversityJejuRepublic of Korea department of Veterinary Anatomy College of Veterinary Medicine and BK21 Plus Project TeamChonnam National UniversityGwangjuRepublic of Korea department of Anatomy Kosin University College of MedicineBusanRepublic of Korea department of Animal Science College of Life ScienceSangji UniversityWonjuRepublic of Korea

Previous studies have shown that Ninjurin-1 participates in cell trafficking and axonal growth following central and peripheral nervous system *** its precise roles in these processes and involvement in spinal cord injury pathophysiology remain *** blot assay revealed that Ninjurin-1 levels in rats with spinal cord injury exhibited an upregulation until day 4 post-injury and slightly decreased thereafter compared with sham *** analysis revealed that Ninjurin-1 immunoreactivity in rats with spinal cord injury sharply increased on days 1 and 4 post-injury and slightly decreased on days 7 and 21 post-injury compared with sham ***-1 immunostaining was weak in vascular endothelial cells, ependymal cells, and some glial cells in sham controls while it was relatively strong in macrophages, microglia, and reactive *** findings suggest that a variety of cells, including vascular endothelial cells, macrophages, and microglia, secrete Ninjurin-1 and they participate in the pathophysiology of compression-induced spinal cord *** experimental procedures were approved by the Care and Use of Laboratory Animals of Jeju National University(approval No.2018-0029) on July 6, 2018.

关键词： astrocytes clip compression injury macrophage microglia neuroinflammation Ninjurin-1 rat spinal cord

dIRECT NUMERICAL SIMULATIONS OF THE dYNAMICS OF PARTICLES WITH ARBITRARY SHAPES IN SHEAR FLOWS

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Journal of Hydrodynamics 2010年第4期22卷 456-465页

作者： choi Choeng Ryul kIM Chang Nyung department of Mechanical Engineering Kyung Hee University College of Engineering Kyung Hee University Industrial Liaison Research Institute Kyung Hee University

A fluid-structure interaction method based on the arbitrary Lagrangian-Eulerian method and a dynamic mesh method was developed to simulate the dynamics of a rigid particle in shear *** the method,the governing equations for the fluid flow and particle motion were sequentially solved in a two-way coupling *** mesh system was deformed or re-meshed by the dynamic mesh *** method was employed to simulate the dynamics of a single particle suspended in a flow channel and the dynamics of the particle were *** simulation results show that the angular velocity is not only a function of the inclination angle,is but also influenced by the aspect ratio yielding a hysteresis,while the angular velocity obtained from the keller-Scalak model is a function only of the inclination angle and does not show a *** present simulations clearly demonstrate that the Fluid-Structure Interaction（FSI） module is very stable,accurate and robust.

关键词： particle suspension Fluid-Structure Interaction (FSI) fluid-particle interaction particulate flow

Activity Recognition Based on RFId Object Usage for Smart Mobile devices

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Journal of Computer Science & Technology 2011年第2期26卷 239-246页

作者： Jaeyoung Yang Joonwhan Lee Joongmin choi Human-Computer Interaction Institute Carnegie Mellon University Neowiz Internet Inc. department of Computer Science and Engineering Hanyang University

Activity recognition is a core aspect of ubiquitous computing applications. In order to deploy activity recognition systems in the real world, we need simple sensing systems with lightweight computational modules to accurately analyze sensed data. In this paper, we propose a simple method to recognize human activities using simple object information involved in activities. We apply activity theory for representing complex human activities and propose a penalized naive Bayes classifier for performing activity recognition. Our results show that our method reduces computation up to an order of magnitude in both learning and inference without penalizing accuracy, when compared to hidden Markov models and conditional random fields.

关键词： activity recognition activity theory context-awareness RFId

Priority-based adaptive transmission algorithm for medical devices in wireless body area networks(WBANs)

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Journal of Central South University 2015年第5期22卷 1762-1768页

作者： kIM Jinhyuk SONG Inseong choi Sangbang department of Electronic Engineering Inha University

A wireless body area network offers cost-effective solutions for healthcare infrastructure. An adaptive transmission algorithm is designed to handle channel efficiency, which adjusts packet size according to the difference in feature-point values that indicate biomedical signal characteristics. Furthermore, we propose a priority-adjustment method that enhances quality of service while guaranteeing signal integrity. A large number of simulations were carried out for performance evaluation. We use electrocardiogram and electromyogram signals as reference biomedical signals for performance verification. From the simulation results, we find that the average packet latency of proposed scheme is enhanced by 30% compared to conventional method. The simulation results also demonstrate that the proposed algorithm achieves significant performance improvement in terms of drop rates of high-priority packets around 0.3%-0.9 %.

关键词： wireless body area network channel efficiency quality of service

Visualization of flow structures inside a conical spouted bed by electrical capacitance volume tomography

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Particuology 2019年第1期17卷 15-25页

作者： Hoon Chae Park Hang Seok choi department of Environmental Engineering Yonsei UniversityWonju 26493Republic of Korea

Electrical capacitance volume tomography (ECVT) was conducted to measure instantaneous gas–solid flow structures in a conical spouted bed. The sensor has 24 electrodes/channels and was used to make three-dimensional measurements of the solid volume fraction. Flow structures in the conical spouted bed were analyzed using quantitative ECVT images. Three-dimensional images of gas–solid flow structures and time-averaged vertical and radial solid volume fraction profiles are presented. different fluidization regimes in spouted beds were characterized by analyzing pressure fluctuation signals and ECVT images. ECVT was shown to be robust and powerful for the three-dimensional visualization and quantitative measurement of a gas–solid fluidization system.

关键词： Conical spouted bed Electrical capacitance volume tomography Multiphase flow

Migration of the localization wire to the back in patient with nonpalpable breast carcinoma: A case report

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World Journal of Clinical Cases 2021年第26期9卷 7863-7869页

作者： Young Jin choi department of Surgery Chungbuk National University HospitalChungbuk National University College of MedicineCheongju 28644South Korea

BACkGROUNd due to the increasing number of diagnosed nonpalpable breast cancer cases,wire localization has been commonly performed for surgical guidance to remove nonpalpable breast *** report presents a rare case of localized wire migration to a subcutaneous lesion of the upper back in a breast cancer patient undergoing breast-conserving *** SUMMARY A 48-year-old female was scheduled for breast-conserving surgery for left breast *** guided wire localization was performed intraoperatively by surgeon to localize the nonpalpable breast *** axilla sentinel lymph node biopsy,we realized that the wire was not *** wire was not found in the operation field,including the breast and ***-conserving surgery was performed after wire *** chest posteroanterior view revealed that the wire was located on the level of midaxillary *** days after the operation,a serial simple X-ray revealed that the wire was located on the subcutaneous lesion of the *** wire tip was palpable under the skin of the upper back,and the wire was removed under local *** Hooked wire misplacement can lead to fatal *** must consider the possibility of wire migration during breast cancer surgery.

关键词： Breast carcinoma Hooked wire Migration Nonpalpable breast lesion Wire localization Case report

A digital application for implementing the ICd-11 traditional medicine chapter

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Journal of Integrative Medicine 2020年第6期18卷 455-458页

作者： Seung-hoon choi department of Life Convergence Graduate SchoolDankook UniversityYonginGyeonggi-do 16890Republic of Korea

On May 25,2019,the World Health Assembly approved the eleventh revision of the International Statistical Classification of diseases and Related Health Problems(ICd-11),containing a chapter on traditional *** means that the traditional East Asian medicine(TEAM)is now officially recognized as a part of mainstream medical ***,the patterns presented in the ICd-11 traditional medicine chapter are only the tip of the iceberg of TEAM clinical practice,and it will be necessary to supplement and upgrade the *** order to implement this,objectification and standardization of TEAM must be premised,and grafting with proper modern science and technology is *** Identification and Prescription Expert-11(PIPE-11),which is a TEAM clinical decision support system,adopts vastly from clinical literature on pattern identification and the *** adopting the rule-based reasoning method,the way of diagnosis and prescription by a TEAM practitioner in actual clinical practice is implemented as it ***-11 could support to improve both the accuracy of medical diagnosis and the reliability of the medical treatment of TEAM in clinical *** the field of research,it might facilitate the usage for reliable reference for symptoms and signs retrieval and patient *** the field of education,it can provide a high level of training for learning pattern identification and prescription,and further be used to reinforce skills of diagnosis and prescription by providing self-simulation ***,PIPE-11 as a digital application is expected to support the traditional medicine chapter of ICd-11 to successfully contribute to the improvement of human health.

关键词： ICd-11 PIPE-11 Traditional medicine Clinical decision support system Formula Pattern

Two-dimensional dirac plasmon-polaritons in graphene,3d topological insulator and hybrid systems

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Light(Science & Applications) 2022年第11期11卷 2602-2616页

作者： Chihun In Un Jeong kim Hyunyong choi department of Physics Freie Universitat BerlinBerlin 14195Germany department of Physical Chemistry Fritz-Haber-lInstitute of the Max-Planck-SocietyBerlin 14195Germany department of Physics and Astronomy Seoul National UniversitySeoul 08826Republic of Korea Institute of Applied Physics Seoul National UniversitySeoul 08826Republic of Korea Advanced Sensor Laboratory Samsung Advanced Institute of TechnologySuwonGyeonggido 16419Republic of Korea

Collective oscillations of massless particles in two-dimensional(2d)dirac materials offer an innovative route toward implementing atomically thin devices based on low-energy quasiparticle *** confinement of nearfield distribution on the 2d surface is essential to demonstrate extraordinary optoelectronic functions,providing means to shape the spectral response at the mid-infrared(IR)*** the dynamic polarization from the linear response theory has successfully accounted for a range of experimental observations,a unified perspective was stll elusive,connecting the state-of-the-art developments based on the 2d dirac ***,we review recent works on graphene and three-dimensional(3d)topological insulator(TI)plasmon-polariton,where the mid-IR and terahertz(THz)radiation experiences prominent confinement into a deep-subwavelength scale in a novel optoelectronic *** presenting general light-matter interactions between 2d dirac plasmon and subwavelength quasiparticle excitations,we introduce various experimental techniques to couple the plasmonpolaritons with electromagnetic *** and optical controls over the plasmonic excitations reveal the hybridized plasmon modes in graphene and 3d Tl,demonstrating an intense near-field interaction of 2d dirac plasmon within the highly-compressed *** findings can further be applied to invent optoelectronic biomolecular sensors,atomically thin photodetectors,and laser-driven light sources.

关键词： structure dirac topological

Optimal design of Splitters Attached to Turbo Blower Impeller by RSM

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Journal of Thermal Science 2012年第3期21卷 215-222页

作者： Choon-Man Jang ka-Ram choi Environmental Engineering Research division Korea Institute of Construction Technology

This paper describes the optimization of the impeller having splitters for a turbo *** design variables,chord of splitter and pitch of splitter,are introduced to enhance the blower *** pressure and ef-ficiency are selected as an object function,and the optimization of the blower impeller is performed by a response surface method (RSM).Three-dimensional Navier-Stokes equations are introduced to analyze the internal flow of the blower and to find the value of the object function for each *** the shape optimization of the splitters attached to the impeller in the turbo blower,pressure and efficiency at the design flow condition are suc-cessively increased by 5.9 percent and 17.9 percent respectively based on the reference *** higher blower efficiency obtained by optimization of impeller having splitters is mainly caused by reducing the number of im-peller blades and optimal design of splitters in the blade passage while pressure increase keeps almost the same with the reference *** the object function of pressure,pressure increase is obtained at the design and off-design conditions while efficiency keeps higher compared to the reference *** enhancement of blow-er performance is due to the reduction of reverse and circulation flows in the blade passage.

关键词： Turbo Blower Splitter Numerical Simulation Optimal design Pressure Response Surface Method