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Clinical usefulness of ankle brachial index and brachial-ankle pulse wave velocity in patients with ischemic stroke

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The Journal of Biomedical Research 2016年第4期30卷 285-291页

作者： hyung-Suk lee Hye Lim lee Ho-seong Han Minju Yeo Ji Seon Kim sung-hyun lee Sang-Soo lee Dong-Ick Shin Department of Neurology Yuseong Sun General Hospital Daejeon 34084 Korea Department of Neurology Chungbuk National University College of Medicine Chungbuk National University Hospital Cheongju 28644 Korea

Ankle brachial index （ABI） and brachial-ankle pulse wave velocity （baPWV） are widely used noninvasive modalities to evaluate atherosclerosis. Recently, evidence has increased supporting the use of ABI and baPWV as markers of cerebrovascular disease. This study sought to examine the relationship between ABI and baPWV with ischemic stroke. This study also aimed to determine which pathogenic mechanism, large artery disease （LAD） or small vessel disease （SVD）, is related to ABI or baPWV. Retrospectively, 121 patients with ischemic stroke and 38 subjects with no obvious ischemic stroke history were recruited. First, ABI and baPWV were compared between the groups. Then, within the stroke group, the relevance of ABI and baPWV with regard to SVD and LAD, which were classified by brain magnetic resonance image （MRI） and magnetic resonance angiography （MRA） or computed tomography angiography （CTA） findings, was assessed. The baPWV was higher in the stroke group than non-stroke group （1,944.18±416.6 cm/s vs. 1,749.76±669.6 crn/s, P 〈 0.01）. Regarding LAD, we found that mean ABI value was lower in the group with extracranial large artery stenosis （P 〈 0.01）, and there was an inverse linear correlation between ABI and the grade of extracranial large artery stenosis （P〈 0.01）. For SVD, there was a significant correlation between SVD and baPWV （2,057.6±456.57 cm/s in the SVD （＋） group vs. 1,491±271.62 cm/s in the SVD （-） group; P 〈 0.01）. However, the grade of abnormalities detected in SVD did not correlate linearly with baPWV. These findings show that baPWV is a reliable surrogate marker ofischemic stroke. Furthermore, baPWVand ABI can be used to indicate the presence of small vessel disease and large arterial disease, respectively.

关键词： ABI baPWV small vessel disease intracranial artery stenosis extracranial artery stenosis

Effects of Angelica sinensis on longitudinal bone growth rate in adolescent female rats

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中国药理学与毒理学杂志 2015年第S1期29卷 103-103页

作者： Hai-ling GUO Donghun lee Young-Sik KIM Jung-bin SONG hyun Soo KIM hyun Jung lee sung hyun lee Juyeon PARK Hocheol KIM Department of Herbal Pharmacology College of Korean Medicine Kyung Hee University Seoul Kirea Korea Institute of Science and Technology for Eastern Medicine NeuMed Inc. Seoul Korea

OBJECTIVE To investigate the effect of *** on longitudinal bone growth rate in adolescent female *** *** was extracted with 30% EtOH for 3h at 90℃in a reflux *** Sprague-Dawley rats(33d-old)were randomly divided into three groups:control(vehicle),recombinant human growth hormone(rhGH;20μg·kg-1·d-1),and ***(300mg·kg-1·d-1).*** extracts or vehicle was administered orally twice daily for *** bone growth rate in newly synthesized bone was observed using tetracycline labeling(20mg·kg-1,intraperitoneally).RESULTS *** significantly increased longitudinal bone growth rate in adolescent female rats at 300mg·kg-1(6.1%,357.34±32.67μm·d-1)compared to control group(336.80±14.47μm·d-1).CONCLUSION *** extract significantly increased longitudinal bone growth rate and growth plate height in adolescent female *** results suggest that *** could be helpful for increasing bone growth rate in children who have growth retardation.

关键词： Angelica sinensis longitudinal bone growth rate he

Evaluation of Patient-Specific Quality Assurance for Carbon Ion Radiotherapy Using Full Energy Scanning Method at QST Hospital

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2022年第4期11卷 200-209页

作者： Asami Inomata Masashi Katsumata sung hyun lee Yui Suzuki Takeo Nakajima Wataru Furuichi Keishi Yamaoka Atsushi Yamamoto Hideyuki Mizuno Ryosuke Kohno Accelerator Engineering Corporation Chiba Japan Department of Accelerator and Medical Physics National Institutes for Quantum and Radiological Science and Technology Chiba Japan Department of Heavy Particle Medical Science Graduate School of Medical Science Yamagata University Yamagata Japan QST Hospital National Institutes for Quantum and Radiological Science and Technology Chiba Japan Department of Radiological Sciences International University of Health and Welfare Tochigi Japan

Purpose: Patient-specific QA (PSQA) measurements for carbon ion radiotherapy (CIRT) are critical components of processes designed to identify discrepancies between calculated and delivered doses. We report the results of PSQA conducted at the QST Hospital during the period from September 2017 to March 2018. Methods: We analyzed PSQA results for 1448 fields for 10 disease sites with various target volumes, target depths and number of energy layers. For the PSQA, all the planned beams were recalculated on a water phantom with treatment planning software. The recalculated dose distributions were compared with the measured distributions using a 2D ionization chamber array at three depths, including 95% of the area of the prescription dose. These recalculated dose distributions were evaluated using the 3%/3mm gamma index with a passing threshold of 90%. Results: The passing rates for prostate, head and neck, and bone and soft tissue were 96.8%, 99.3%, and 91.7%, respectively. Additionally, 94.7% of lung plans with low energy beams passed. Overall, the CIRT in the QST Hospital reached a high passing rate of more than 95%. Although the remaining 5% failed to pass, there was no dependence between measurement depth and disease sites in these failures. Conclusion: Using PSQA measurements, we confirmed consistency between the planned and delivered doses for CIRT using the full energy scanning method.

关键词： Carbon Ion Radiotherapy Full Energy Scanning Patient-Specific Quality Assurance Gamma Index

Estimation of marine winds in and around typhoons using multi-platform satellite observations: Application to Typhoon Soulik (2018)

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Frontiers of Earth Science 2022年第1期16卷 175-189页

作者： Seung-Woo lee sung hyun NAM Duk-Jin KIM School of Earth and Environmental Sciences College of Natural SciencesSeoul National UniversitySeoul 08826Republic of Korea Research Institution of Oceanography College of Natural SciencesSeoul National UniversitySeoul 08826Republic of Korea

Estimating horizontal winds in and around typhoons is important for improved monitoring and prediction of typhoons and mitigating their ***,we present a new algorithm for estimating typhoon winds using multiple satellite observations and its application to Typhoon Soulik(2018).Four kinds of satellite remote sensing data,along with their relationship to typhoon intensity,derived statistically from hundreds of historical typhoon cases,were merged into the final product of typhoon wind(MT wind):(1)geostationarysatellite-based infrared images(IR wind),(2)passive microwave sounder(MW wind),(3)feature-tracked atmospheric motion vectors,and (4)scatterometer-based sea surface winds(SSWs).The algorithm was applied to two cases(A and B)of Typhoon Soulik and validated against SSWs independently retrieved from active microwave synthetic aperture radar(SAR)and microwave radiometer(AMSR2)images,and vertical profiles of wind speed derived from reanalyzed data and dropsonde *** Case A(open ocean),the algorithm estimated the realistic maximum wind,radius of maximum wind,and radius of 15 m/s,which could not be estimated using the reanalysis data,demonstrating reasonable and practical ***,for Case B(when the typhoon rapidly weakened just before making landfall in the Korean Peninsula),the algorithm significantly overestimated the parameters,primarily due to the overestimation of typhoon *** study highlights that realistic typhoon winds can be monitored continuously in real-time using multiple satellite observations,particularly when typhoon intensity is reasonably well predicted,providing timely analysis results and products of operational importance.

关键词： sea surface wind multi-platform satellites Typhoon Soulik(2018)

Self-motivated,thermally oxidized hematite nanoflake photoanodes:Effects of pre-polishing and ZrO_(2) passivation layer

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Journal of Energy Chemistry 2022年第2期31卷 415-423页

作者： Love Kumar Dhandole hyun Hwi lee Weon-Sik Chae Jum Suk Jang Jae sung lee Department of Energy Engineering School of Energy and Chemical EngineeringUlsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea Division of Biotechnology College of Environmental and Bioresource SciencesChonbuk National UniversityIksan 54596Republic of Korea Pohang Accelerator Laboratory Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Daegu Center Korea Basic Science InstituteDaegu 41566Republic of Korea

High-temperature thermal oxidation of an Fe foil produces a high-quality,crystalline hematite nanoflake suitable as a photoanode for the photoelectrochemical(PEC)water *** pre-polishing of the foil surface has a profound effect in the formation of a vertically-aligned nanoflakes of hematite phase with extended(110)planes by removing the loosely-bonded oxide *** the surface of the photoanode is modified with a ZrO_(2) passivation layer and a cobalt phosphate co-catalyst,the charge recombination at the photoanode-electrolyte interface is greatly suppressed to improve its overall PEC *** a result,the photocurrent density at 1.10 VRHE under 1 sun condition is enhanced from 0.22 mA cm^(-2) for an unmodified photoanode to 0.59 mA cm^(-2) for the fully modified photoanode,and the photocurrent onset potential is shifted cathodically by 400 ***,the photoanode demonstrates outstanding stability by showing steady production of H_(2) and O_(2) gases in the stoichiometric ratio of 2:1 in a continuous PEC operation for 10 h.

关键词： Fe foil Thermal oxidation Nanoflakes Photoelectrochemical water splitting Surface modifications

Cortical activation pattern during shoulder simple versus vibration exercises： a functional near infrared spectroscopy study

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Neural Regeneration Research 2017年第8期12卷 1294-1298页

作者： sung Ho Jang Sang Seok Yeo Seung hyun lee Sang hyun Jin Mi Young lee Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University Daegu Republic of Korea Department of Physical Therapy College of Health Science Dankook University Cheonan-si Republic of Korea Robot System Research Division Daegu Gyeongbuk Institute of Science & Technology Daegu Republic of Korea Department of Physical Therapy College of Health and Therapy Daegu Haany University Gyeongsan-si Republic of Korea

To date, the cortical effect of exercise has not been fully elucidated. Using the functional near infrared spectroscopy, we attempted to compare the cortical effect between shoulder vibration exercise and shoulder simple exercise. Eight healthy subjects were recruited for this study. Two different exercise tasks（shoulder vibration exercise using the flexible pole and shoulder simple exercise） were performed using a block paradigm. We measured the values of oxygenated hemoglobin in the four regions of interest： the primary sensory-motor cortex（SM1 total, arm somatotopy, and leg and trunk somatotopy）, the premotor cortex, the supplementary motor area, and the prefrontal cortex. During shoulder vibration exercise and shoulder simple exercise, cortical activation was observed in SM1（total, arm somatotopy, and leg and trunk somatotopy）, premotor cortex, supplementary motor area, and prefrontal cortex. Higher oxygenated hemoglobin values were also observed in the areas of arm somatotopy of SM1 compared with those of other regions of interest. However, no significant difference in the arm somatotopy of SM1 was observed between the two exercises. By contrast, in the leg and trunk somatotopy of SM1, shoulder vibration exercise led to a significantly higher oxy-hemoglobin value than shoulder simple exercise. These two exercises may result in cortical activation effects for the motor areas relevant to the shoulder exercise, especially in the arm somatotopy of SM1. However, shoulder vibration exercise has an additional cortical activation effect for the leg and trunk somatotopy of SM1.

关键词： nerve regeneration functional near infrared spectroscopy cortical activation shoulder vibrationexercise flexible pole neural regeneration

Innovative strategies toward challenges in PV-powered electrochemical CO_(2)reduction

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Journal of Energy Chemistry 2021年第9期30卷 410-416页

作者： Siraj Sultan Jin hyun Kim Seung Hyeon Kim Youngkook Kwon Jae sung lee Department of Energy Engineering School of Energy and Chemical EngineeringUlsan National Institute of Science and Technology(UNIST)Ulsan 44919South Korea

The solar energy-driven electrochemical CO_(2)reduction to value-added fuels or chemicals is considered as an attractive path to store renewable energy in the form of chemical energy to close the carbon ***,CO_(2)reduction suffers from a number of challenges including slow reaction rates,low selectivity,and low energy conversion ***,innovative strategies have been developed to mitigate this *** the development of flow cell reactors with a gas diffusion electrode,ionic liquid electrolytes,and new electrocatalysts have dramatically improved the reaction rates and selectivity to desired *** this perspective,we highlight the key recent developments and challenges in PVpowered electrochemical CO_(2)reduction and propose effective strategies to improve the reaction kinetics,to minimize the electrical energy losses,and to tune the selectivity of the catalysts for desired products,and then suggest future direction of research and development.

关键词： Electrochemical CO_(2)reduction Photovoltaic cell Ionic liquid electrolytes Flow cell electrolyzers Gas diffusion electrode

Semantics-oriented approach for information interoperability and governance:towards user-centric enterprise architecture management

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第4期11卷 227-240页

作者： Imran GHANI Choon Yeul lee sung hyun JUHN Seung Ryul JEONG School of Business IT Kookmin University

Enterprise architecture (EA) efforts focus on business, technology, data, and application architecture, and their integration. However, less attention has been given to one of the most critical EA elements, i.e., users (EA audiences). As a result, existing EA management systems (EAMS) have become old, large, content-centric document-repositories that are unable to provide meaningful information of use to the enterprise users and aligned with their needs and functional scope. We argue that a semantic technology based mechanism focusing on enterprise information and user-centricity has the potential to solve this problem. In this context, we present a novel ontology-based strategy named the user-centric semantics-oriented EA (U-SEA) model. Based on this model, we have developed a user-centric semantics-oriented enterprise architecture management (U-SEAM) system. Our approach is generic enough to be used in a wide variety of user-centric EAM applications. The results obtained show computational feasibility to integrate and govern enterprise information and to reduce complexity with respect to interoperability between enterprise information and users.

关键词： Enterprise architecture management system (EAMS) Ontology Recommender system User-centric Semantic Web Framework

Hyperoxia accelerates progression of hepatic fibrosis by up-regulation of transforming growth factor-β expression

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World Journal of Gastroenterology 2014年第11期20卷 3011-3017页

作者： Sang Hwa lee sung-Im Do hyun-Soo Kim Department of Pathology Aerospace Medicine Research CenterAerospace Medical CenterRepublic of Korea Air ForceChungcheongbuk-do 363-849South Korea Department of Pathology Kangbuk Samsung HospitalSungkyunkwan University School of MedicineSeoul 110-746South Korea

AIM: To investigate the effect of hypoxia or hyperoxia on the progression of hepatic fibrosis and to examine the role of transforming growth factor-β (TGF-β) in the livers of rats exposed to hypoxic or hyperoxic con... 详细信息

关键词： Hepatic fibrosis, Cirrhosis, Hypoxia, Hyperoxia, Transforming growth factor-β