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World Journal of Clinical Cases 2022年第24期10卷 8735-8741页

作者： jeong a yeom You Seon Song In Sook Lee In Ho Han Kyung Un Choi Department of Radiology Pusan National University Yangsan HospitalYangsan 50612South Korea Department of Radiology Pusan National University HospitalBusan 49241South Korea Department of Neurosurgery Pusan National University HospitalBusan 49241South Korea Department of Pathology Pusan National University HospitalBusan 49241South Korea

BACKGROUND A malignant melanotic nerve sheath tumor(MMNST),previously known as a melanotic schwannoma,is a rare variant of a peripheral nerve sheath tumor composed of Schwann cells with melanotic *** a few reports of spinal MMNST have been *** SUMMARY In the first case,a 58-year-old woman presented with a history of low back pain and *** resonance imaging(MRI)and computed tomography(CT)of the lumbar spine revealed an intradural extramedullary mass lesion with amorphous linear *** tumor resection was performed and histological examination revealed a psammomatous melanotic *** the second case,a 72-year-old man presented with low back pain and *** of the thoracolumbar spine revealed an intramedullary mass lesion at the T11 vertebral body *** mass lesion was hypointense on T2WI and hyperintense on *** resection was performed and the histologic result was melanotic *** MMNST should be considered in the differential diagnosis when calcification or melanin is seen in an intradural spinal tumor.

关键词： Nerve sheath neoplasm Extramedullary Malignant Melanotic Magnetic resonance imaging Case reports

Clinical usefulness of transpapillary removal of common bile duct stones by frequency doubled double pulse Nd:YAG laser

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World Journal of Gastroenterology 2008年第18期14卷 2863-2866页

作者： Tae Hyeon Kim Hyo jeong Oh Chang-Soo Choi Dong Han yeom Suck Chei Choi Department of Internal Medicine and Digestive Disease Research Institute Wonkwang University School of Medicine Iksan 570180 Korea

AIM: To study the efficacy and the safety of laser lithotripsy without direct visual control by using a balloon catheter in patients with bile duct stones that could not be extracted by standard technique. METHODS: The seventeen patients (7 male and 10 female; mean age 67.8 years) with difficult common bile duct (CBD) stones were not amenable for conventional endoscopic maneuvers such as sphincterotomy and mechanical lithotripsy were included in this study. Laser wavelengths of 532 nm and 1064 nm as a double pulse were applied with pulse energy of 120 mJ. The laser fiber was advanced under fluoroscopic control through the ERCP balloon catheter. Laser lithotripsy was continued until the fragment size seemed to be less than 10 mm. Endoscopic extraction of the stones and fragments was performed with the use of the Dormia basket and balloon catheter. RESULTS: Bile duct clearance was achieved in 15 of 17 patients (88%). The mean number of treatment sessions was 1.7 ± 0.6. Endoscopic stone removal could not be achieved in 2 patients (7%). Adverse effects were noted in three patients (hemobilia, pancreatitis, and cholangitis). CONCLUSION: The Frequency Doubled Double Pulse Nd:YAG (FREDDY) laser may be an effective and safe technique in treatment of difficult bile duct stones.

关键词： Bile duct stones Frequency doubled double pulse Nd:YAG laser Transpapillary removal Mechanical lithotripsy Balloon catheter

Bimodal grain structures and tensile properties of a biomedical Co-20Cr-15W-10Ni alloy with different pre-strains

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Rare Metals 2021年第1期40卷 20-30页

作者： Cheng-Lin Li Seong-Woo Choi jeong Mok Oh Jae-Keun Hong Jong-Taek yeom Joo-Hee Kang Qing-Song Mei Chan Hee Park Department of Materials Engineering School of Power and Mechanical EngineeringWuhan UniversityWuhan 430072China Advanced Metals Division.Korea Institute of Materials Science Changwon 51508Republic of Korea Materials Testing&Reliability Division Korea Institute of Materials ScienceChangwon 51508Republic of Korea

The influence of pre-strain on the formation of bimodal grain structures and tensile properties of a Co-20 Cr-15 W-10 Ni alloy was *** bimodal grain structures consist of fine grains(FGs;2-3μm in diameter)and coarse grains(CGs;8-16μm in diameter),which can be manipulated by changing the pre-strain(ε=0.3-0.7)and annealing temperatures(1000-1100℃).High pre-strain applied in the samples can intensify the plasticity heterogeneity through increasing the total dislocation density and the local volumes of high-density *** can essentially result in finer FGs,a higher FG volume fraction,and overall grain refinement in the samples after ***-temperature essentially increases both the size and volume fraction of CGs,leading to an increase in the average grain *** tensile test suggests that the bimodal grain structured samples exhibited both high strength and ductility,yield strengths of621-877 MPa and ultimate tensile strengths of1187-1367 MPa with uniform elongations of 55.0%-71.4%.The superior strength-ductility combination of the samples arises from the specific deformation mechanisms of the bimodal grain *** tensile properties strongly depend on the size ratio and volume fraction of FGs/CGs in addition to the average grain size in the bimodal grain *** grain structures can be modified via changing the pre-strain and annealing temperature.

关键词： Biomaterials Bimodal grain structure Deformation heterogeneity Pinning High strength/ductility

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How Do Phytochromes Transmit the Light Quality Information to the Circadian Clock in Arabidopsis？

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Molecular Plant 2014年第11期7卷 1701-1704页

作者： Miii yeom Hyunmin Kim Junhyun Lim Ah- Young Shin Sunghyun Hong jeong-II Kim Hong Gil Nam Division of Molecular and Life Sciences PohangUniversity of Science and Technology Hyojadong Pohang Gyeongbuk 790-784 Republic of Korea Integrative Biosciences & Biotechnology in POSTECH Hyojadong Pohang Gyeongbuk 790-784 Republic of Korea Department of Molecular Biotechnology and Kumho Life Science Laboratory Chonnam National University Gwangju 500-757 Republic of Korea Center for Plant Aging Research Institute for Basic Science Daegu 711-873 Republic of Korea Department of New Biology DGIST Hyeongpoong-Myun Dalsung-gun Daegu 711-873 Republic of Korea

Dear Editor, Plants use light as an environmental signal to coor- dinate diverse physiological and developmental processes, thereby increasing their fitness. Light quality, quantity, and photoperiod change periodically under natural condi- tions of daily and seasonal cycles. Plants have developed a circadian clock to respond to these predictable, periodic environmental changes, providing plants with the ability to anticipate daily and seasonal environmental changes.

关键词： STABILITY PROTEIN COP1

Thermal stability of bimodal grain structure in a cobalt-based superalloy subjected to high-temperature exposure

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Rare Metals 2021年第4期40卷 877-884页

作者： Cheng-Lin Li jeong Mok Oh Seong-Woo Choi Xin-Ming Mei Jae-Keun Hong Jong-Taek yeom Qing-Song Mei Zhen-Tao Yu Chan Hee Park School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China Advanced Metals Division Korea Institute of Materials ScienceChangwon 51508Republic of Korea Institute of Advanced Wear and Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou 510632China

The present work investigates the thermal stability and mechanical properties of a Co-20 Cr-15 W-10 Ni(wt%) alloy with a bimodal grain(BG) *** BG structure consisting of fine grains(FGs) and coarse grains(CGs) is thermally stable under high-temperature exposure treatments of 760℃ for 100 h and 870℃ for 100-1000 *** size of both FGs and CGs remains no significant changes after thermal exposure *** microstructural stability is associated with the slow kinetics of grain growth and the pinning of *** thermal stability enables to maintain the BG structures,leading to the same mechanical properties as the sample without thermal exposure *** particular,the BG alloy samples after thermal exposure treatment exhibit superior mechanical properties of both high strength and high ductility compared to the unimodal grain(UG) structured *** BG structure of the alloy samples after thermal exposure is capable of avoiding severe loss of ductility and retaining high *** specifically,the ductility of the BG alloy samples after thermal exposure treatments of 870℃ for 500-1000 h is ten times higher(44.6% vs.3.5% and 52.6% vs.5.0%) than that of the UG *** finding in the present work may give new insights into high-temperature applications of the Co-20 Cr-15 W-10 Ni alloy and other metallic materials with a BG structure.

关键词： Thermal stability Bimodal grain structure High-temperature exposure Cobalt-based superalloy

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Analysis on sports and recreation activity-related eye injuries presenting to the Emergency Department

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International Journal of Ophthalmology(English edition) 2016年第10期9卷 1499-1505页

作者： Sungbae Moon Hyun Wook Ryoo Jae Yun Ahn Jung Bae Park Kang Suk Seo Sang Do Shin Kyoung Jun Song Kang Hyun Lee In Sool Yoo Jin Seong Cho Hyun Ho Ryu Tae Oh jeong Seok Ran yeom Young Taek Kim Sung Ok Hong Department of Emergency Medicine School of MedicineKyungpook National University Daegu 700-721 Korea Department of Emergency Medicine College of MedicineSeoul National University Seoul 110-799 Korea Department of Emergency Medicine Wonju College of Medicine Yonsei University Wonju Gangwon-do 220-701Korea Department of Emergency Medicine School of MedicineChungnam National University Daejeon 301-747 Korea Department of Emergency Medicine Gachon University Gil Medical Center Incheon 406-799 Korea Department of Emergency Medicine School of MedicineChonnam National University Gwangju 501-746 Korea Department of Emergency Medicine School of MedicineChonbuk National University Jeonju Jeollabuk-do 561-180Korea Department of Emergency Medicine School of MedicinePusan National University Busan 602-739 Korea Korean Centers for Disease Control & Prevention Cheongiu Chungcheongbuk-do 361-951 Korea

AIM：To investigate the incidence and general characteristics of sports-related eye injuries in patients visiting the Emergency Department. METHODS： A cross-sectional,multi-center,observational *** with an injured eye who visited the Emergency Department at one of nine hospitals in Korea were *** data were prospectively collected between March and September 2010 using a *** injuries that occurred during risky sports were examined by gender and ***,the rate of open globe injuries that occurred with and without protective eyewear was examined for each *** variables were compared using Student＇s t-test and categorical variables were compared using Chi-square ***： A total of 446 patients had sports-related eye ***（10-19 years old） and young adults（20-29 years old） had the most eye *** injuries accounted for 0.2% of Emergency Department *** was the most common cause of sports-related eye injuries,followed by soccer and *** gear was worn by 9.4% of all *** that were 30-39 years of age had the highest rate of protective gear use,followed by patients that were 40-49 years of *** proportion of sports-related eye injuries that were open-globe injuries was highest for soccer and ***： Although injuries were most common in patients below the age of 10 years,these patients had the lowest rate of protective eyewear *** in adults over 40 years of age most commonly occurred during hiking,but the rate of protective eyewear use was *** athletes should be educated on and provided with protective eyewear and policies protective gear use should be *** older adults,eye protection should be encouraged,especially during hiking.

关键词： athletic injuries eye injuries protective devices sports.

FPGA Based Signal Processing Module Design and Implementation for FMCW Vehicle Radar Systems

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FPGA Based Signal Processing Module Design and Implementatio...

Repair of heat-induced skin aging by herbal extracts and thermal protection factor(TPF)

2011 CIE International Conference on Radar(RADAR 2011)

作者： Eugin Hyun Sang-Dong Kim Yeong-Hwan Ju Jong-Hun Lee Eung-Noh You jeong-Ho Park Dong-Jin yeom Sang-Hyun Park Seung-Gak Kim Robotics Research Division

In this paper, we design the signal processing module based on FPGA for vehicle FMCW radar systems. We employ the detection algorithms based on two-step FFT （Fast Fourier Transform） using the several fast ramps in order to resolve radar range-velocity ambiguities. We implement the detection algorithms including the first FFT, DBF （Digital Beam Forming）, the second FFT, and CFAR （Constant False Alarm） onto FPGA. In particular, the designed architecture supports multiple-receive channels to estimate target angles. The architecture also digitally generates a transmit wave using a DDS （Digital Direct Synthesizer） device. All algorithms and the controller are implemented into a Xilinx Virtex-5 platform and verified under the test platform.

关键词： FMCW radar vehicle radar detection algorithm two-step FFT

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Repair of heat-induced skin aging by herbal extracts and the...

East Asian VLBI Network observations of active galactic nuclei jets:imaging with KaVA+Tianma+Nanshan

第九届中国化妆品学术研讨会

作者： Hyeon Chung Kim Kuan Chi Hsu Sung Il Park Eui Dong Son Myeong Hoon yeom Dae Jin Min Sang Hoon Han Hak Hee Kang Quen Quen He jeong Cheol Ha Su Sun An Jae Ho Yeon Amorepacific Corporation R&D Center

Long term exposure of skin to high temperature induces activation of transient receptor potential cation channel subfamily V member 1(TRPV-1), as well as increase of matrix metalloprotease 9(MMP-9), which breaks down extracellular matrix in skin. Thus, along with photo-aging, heat also accelerates skin-aging as a long term effect. Here, heat-absorbing substances with heat energy-blocking effects were screened, and the blockage rate was calculated as "Thermal Protection Factor(TPF)". Herbal plant extracts such as Prunus Mume fruit extract and Chamaecyparis Obtusa polysaccharide were able to reduce skin damage by reducing TRPV-1 activation, heat-induced MMP-9 expression and other heat-induced inflammatory responses such as monocyte chemoattractant protein-1(MCP-1) expression. Also, a cream containing heat-absorbing and modulating actives showed statistically significant skin elasticity and redness-controlling effects in a clinical study.

关键词： Heat,skin aging TPF Prunus Mume Chamaecyparis Obtusa TRPV-1

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Research in Astronomy and Astrophysics 2021年第8期21卷 220-234页

作者： Yu-Zhu Cui Kazuhiro Hada Motoki Kino Bong-Won Sohn Jongho Park Hyun-Wook Ro Satoko Sawada-Satoh Wu Jiang Lang Cui Mareki Honma Zhi-Qiang Shen Fumie Tazaki Tao An Ilje Cho Guang-Yao Zhao Xiao-Peng Cheng Kotaro Niinuma Kiyoaki Wajima Ying-Kang Zhang Noriyuki Kawaguchi Juan-Carlos Algaba Shoko Koyama Tomoya Hirota Yoshinori Yonekura Nobuyuki Sakai Bo Xia Yong-Bin Jiang Lin-Feng Yu Wei Gou Ju-Yeon Hwang Yong-Chen Jiang Yun-Xia Sun Dong-Kyu Jung Hyo-Ryoung Kim jeong-Sook Kim Hideyuki Kobayashi Jee-Won Lee jeong-Ae Lee Hua Zhang Guang-Hui Li Zhi-Qiang Xu Peng Li Jung-Hwan Oh Se-Jin Oh Chung-Sik Oh Tomoaki Oyama Duk-Gyoo Roh Katsunori-M.Shibata Wen Guo Rong-Bing Zhao Wei-Ye Zhong Jin-Qing Wang Wen-Jun Yang Hao Yan Jae-Hwan yeom Bin Li Xiao-Fei Li Jian-Ping Yuan Jian Dong Zhong Chen Kazunori Akiyama Keiichi Asada Do-Young Byun Yoshiaki Hagiwara Jeffrey Hodgson Tae-Hyun Jung Kee-Tae Kim Sang-Sung Lee Kunwoo Yi Qing-Hui Liu Xiang Liu Ru-Sen Lu Masanori Nakamura Sascha Trippe Na Wang Xue-Zheng Wang Bo Zhang Department of Astronomical Science The Graduate University for Advanced StudiesSOKENDAI2-21-1 OsawaMitakaTokyo 181-8588Japan Mizusawa VLBI Observatory National Astronomical Observatory of Japan2-12 HoshigaokaMizusawaOshuIwate 023-0861Japan Kogakuin University of Technology and Engineering Academic Support Center2665-1 NakanoHachiojiTokyo 192-0015Japan Korea Astronomy and Space Science Institute Yuseong-guDaejeon 34055Korea Department of Astronomy Yonsei University50 Yonsei-roSeodaemun-guSeoul 03722Korea Department of Astronomy and Space Science University of Science and Technology217 Gajeong-roDaejeonKorea Institute of Astronomy and Astrophysics Academia Sinica645 N Aohoku PIHiloHI 96720USA Graduate School of Sciences and Technology for Innovation Yamaguchi UniversityYoshida 1677-1YamaguchiYamaguchi 753-8512Japan Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Key Laboratory of Radio Astronomy Chinese Academy of SciencesNanjing 210008China Institute of Astronomy The University of Tokyo2-21-1 OsawaMitakaTokyo 181-0015Japan Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomia s/nGranada E-18008Spain Department of Physics Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Center for Astronomy Ibaraki University2-1-1 BunkyoMitoIbaraki 310-8512Japan Space Light Laboratory 77Yangjaedae-ro 86 roadGangdong-guSeoulKorea Massachusetts Institute of Technology Haystack Observatory 99 Millstone RoadWestfordMA 01886USA National Radio Astronomy Observatory 520 Edgemont RdCharlottesvilleVA 22903USA Toyo University 5-28-20 HakusanBunkyo-kuTokyo 112-8606Japan Department of Physics and Astronomy Seoul National UniversityGwanak-guSeoul 08826Korea Max Planck Institute for Radio Astronomy Auf dem hiigel 69Bonn 53121Germany SNU Astronomy Research Center Seoul National UniversityGwanak-guSeoul 08826Korea

The East Asian Very Long Baseline Interferometry(VLBI) Network(EAVN) is a rapidly evolving international VLBI array that is currently promoted under joint efforts among China,Japan and *** aims at forming a joint VLBI Network by combining a large number of radio telescopes distributed over East Asian *** the combination of the Korean VLBI Network(KVN) and the VLBI Exploration of Radio Astrometry(VERA) into Ka VA,further expansion with the joint array in East Asia is actively *** we report the first imaging results(at 22 and 43 GHz) of bright radio sources obtained with Ka VA connected to Tianma 65-m and Nanshan 26-m Radio Telescopes in *** test the EAVN imaging performance for different sources,we observed four active galactic nuclei(AGN) having different brightness and *** a result,we confirmed that the Tianma 65-m Radio Telescope(TMRT) significantly enhances the overall array sensitivity,a factor of 4 improvement in baseline sensitivity and 2 in image dynamic range compared to the case of Ka VA *** addition of the Nanshan 26-m Radio Telescope(NSRT) further doubled the east-west angular *** the resulting high-dynamic-range,high-resolution images with EAVN(Ka VA+TMRT+NSRT),various fine-scale structures in our targets,such as the counter-jet in M87,a kink-like morphology of the 3 C 273 jet and the weak emission in other sources are successfully *** demonstrates the powerful capability of EAVN to study AGN jets and to achieve other science goals in *** expansion of EAVN will further enhance the angular resolution,detection sensitivity and frequency coverage of the network.

关键词： galaxies:active galaxies:jets instrumentation:interferometers radio continuum:galaxies

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骨质疏松导致的椎体压缩骨折的经皮椎体成形术中肺部骨水泥栓塞:发生率、特征及危险因素

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国际医学放射学杂志 2009年第3期 293-293页

作者： Y.J.Kim J.W.Lee K.W.Park J.S.yeom H.S.jeong J.M.Park 宋建军 Department of Radiology Seoul National University Bundang Hospital300 Gumi-dongBundangguSeongnamsiGyeongi-do 463-707South Korea

目的前瞻性地评价骨质疏松导致的椎体压缩骨折(VCFs)行经皮椎体成形术(PVP)中肺部骨水泥栓塞的发生率、特征及危险因素。方法已获得机构审查委员会的批准和病人知情同意。本研究前瞻性地选取了2006年6月—2007年9月的75例病人(女57例,... 详细信息

目的前瞻性地评价骨质疏松导致的椎体压缩骨折(VCFs)行经皮椎体成形术(PVP)中肺部骨水泥栓塞的发生率、特征及危险因素。方法已获得机构审查委员会的批准和病人知情同意。本研究前瞻性地选取了2006年6月—2007年9月的75例病人(女57例,男18例;年龄48～93岁,平均74.78岁)119处骨质疏松导致的椎体压缩骨折进行78次PVP治疗。在PVP术后对胸部和治疗椎体进行CT扫描。在CT上对每例肺部骨水泥栓塞的存在、

关键词：骨水泥丙烯酸脂粘固剂骨质疏松椎体压缩骨折经皮椎体成形术肺部栓塞病理发生率