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Neglected corticospinal tract injury for 10 months in a stroke patient

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Neural Regeneration Research 2015年第12期10卷 2060-2061页

作者： Sung Ho Jang chul Hoon Chang woo Hyuk Jang Department of Physical Medicine and Rehabilitation College of MedicineYeungnam University Department of Neurosurgery College of MedicineYeungnam University

The corticospinal tract（CST）is an essential motor pathway in the human brain：particularly,it is essential for fine hand movements（Jang,2014）.Stroke patients can show more severe weakness when a partial injury of ... 详细信息

关键词： MCA Neglected corticospinal tract injury for 10 months in a stroke patient CST

Ischemic colitis due to obstruction of mesenteric and splenic veins: A case report

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World Journal of Gastroenterology 2008年第14期14卷 2272-2276页

作者： Seong-Su Hwang woo-chul Chung Kang-Moon Lee Hyun-Jin Kim Chang-Nyol Paik Jin-Mo yang Department of Radiology St. Vincent Hospital the Catholic University Suwon-si Gyeonggi-do 442-723 Korea Department of Internal Medicine St. Vincent Hospital the Catholic University Suwon-si Gyeonggi-do 442-723 Korea

Ischemic injury to the bowel is a well known disease entity that has a wide spectrum of pathological and clinical findings. A sudden drop in the colonic blood supply is essential to its development. We encountered a 41-year-old male patient, who presented with abdominal pain and bloody diarrhea. A colonoscopy showed markedly edematous mucosa with tortuous dilatation of the veins and a deep ulceration at the rectosigmoid junction. On an abdominal computed tomography (CT) scan and CT angiography, the mesenteric and splenic veins were absent with numerous venous collaterals for drainage. The patient gradually responded to oral aminosalicylate therapy, and was in remission after nine months. In most cases, non-occlusive ischemic injury is caused by idiopathic form and occlusive ischemia is caused by abnormalities of arteries and acute venous thrombosis. However, chronic venous insufficiency due to obstruction of macrovascular mesenteric vein rarely causes ischemia of the bowel. This report describes the first case of ischemic colitis caused by obstruction of the mesenteric and splenic veins.

关键词： Ischemic colitis Mesenteric vein Splenic vein

Comparison Study and Forensic Analysis between Experiment and Coupled Dynamics Simulation for Submerged Floating Tunnel Segment with Free Ends under Wave Excitations

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Computer Modeling in Engineering & Sciences 2023年第10期137卷 155-174页

作者： woo chul Chung Chungkuk Jin Moo Hyun Kim Ju-young Hwang Division of Mechanical Engineering Korea Maritime&Ocean UniversityBusanSouth Korea Department of Ocean Engineering and Marine Sciences Florida Institute of TechnologyMelbourneFLUSA Department of Ocean Engineering Texas A&M UniversityCollege StationTXUSA Department of Civil Engineering Dong-Eui UniversityBusanSouth Korea

This paper presents dynamic-behavior comparisons and related forensic analyses of a submerged floating tunnel(SFT)between numerical simulation and physical experiment under regular and irregular *** experiments are conducted in the 3Dwave tank with 1:33.3 scale,and the corresponding coupled time-domain simulation tool is devised for *** entire SFT systemconsists of a long concrete tunnel and 12 tubular aluminummooring *** numerical simulation models,the Cummins equation with 3D potential theory including second-order wave-body interaction effects and the much simpler Morison-equation-based formula with the lumped-massbased line model,are designed and *** analyses for mooring-line adjustments in the simulation are carried out in view of the best representation of the physical *** that,the measured pre-tension distribution and systemstiffness of twelvemooring lines arewell reproduced in the ***,the dynamic responses and mooring tensions of the SFT are compared under regular and irregular *** measured and simulated results coincide reasonably well for both regular-and irregular-wave conditions.

关键词： Submerged floating tunnel comparative study forensic analysis mooring-line modeling dynamic response mooring tension

Traditional Chinese medicine for foot pain in a patient with complex regional pain syndrome: A case report

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World Journal of Clinical Cases 2023年第30期11卷 7424-7431页

作者： woo-chul Shin Hyungsuk Kim Won-Seok Chung Clinical Korean Medicine Graduate SchoolKyung Hee UniversitySeoul 02447South Korea Korean Medicine Kyung Hee UniversitySeoul 02447South Korea

BACKGROUND Complex regional pain syndrome(CRPS)is characterized by pain as well as sensory,motor,and sudomotor ***,it is classified into two types CRPS-I and *** is no single diagnostic test or treatment approach for CRPS,and a multidisciplinary approach is gaining attention to improve patients’symptoms and their quality of *** SUMMARY A 35-year-old woman with an unremarkable medical history sought treatment for CRPS at a hospital of Korean *** her first visit,she was wheelchairbound due to severe pain in her left lower *** had edema and discoloration of the left *** was treated with a combination of traditional Chinese medicine(TCM)approaches,including acupuncture,moxibustion,pharmacopuncture,and herbal decoction,for approximately 20 *** foot and ankle outcome score(FAOS)and visual analog scale(VAS)score for pain were evaluated,along with general signs and *** symptoms,signs,FAOS,and VAS scores improved after treatment,with a significant 7-degree decrease in the VAS score and a 62-point increase in the FAOS ***,the foot swelling and discoloration gradually *** the phone follow-up,5 mo after the last visit,additional improvements in outcomes were *** Combined TCM treatment may be a reasonable and safe option for alleviating symptoms and improving function in patients with CRPS.

关键词： Complex regional pain syndrome Traditional Chinese medicine Acupuncture Moxibustion Herbal medicine Case report

ABA Signaling in Guard Cells Entails a Dynamic Protein-Protein Interaction Relay from the PYL-RCAR Family Receptors to Ion Channels

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Molecular Plant 2013年第2期6卷 528-538页

作者： Sung chul Lee Chae woo Lim Wenzhi Lan Kai He Sheng Luan Department of Plant and Microbial Biology University of California Berkeley CA 94720 USA School of Biological Sciences (BK21 Program) Chung-Ang University Seoul 156-756 Korea Plant Molecular Biology Institute and College of Life Sciences Nanjing University China WCU Program Chonnam National University Gwangju Korea

Plant hormone abscisic acid （ABA） serves as an integrator of environmental stresses such as drought to trig-ger stomatal closure by regulating specific ion channels in guard cells. We previously reported that SLAC1, an outward anion channel required for stomatal closure, was regulated via reversible protein phosphorylation events involving ABA signaling components, including protein phosphatase 2C members and a SnRK2-type kinase （OST1）. In this study, we reconstituted the ABA signaling pathway as a protein-protein interaction relay from the PYL/RCAR-type receptors, to the PP2C-SnRK2 phosphatase-kinase pairs, to the ion channel SLAC1. The ABA receptors interacted with and inhibited PP2C phosphatase activity against the SnRK2-type kinase, releasing active SnRK2 kinase to phosphorylate, and activate the SLAC1 channel, leading to reduced guard cell turgor and stomatal closure. Both yeast two-hybrid and bimolecular fluorescence complementation assays were used to verify the interactions among the components in the pathway. These biochemical assays demonstrated activity modifications of phosphatases and kinases by their interaction partners. The SLAC1 channel activity was used as an endpoint readout for the strength of the signaling pathway, depending on the presence of different combinations of signaling components. Further study using transgenic plants overexpressing one of the ABA receptors demonstrated that changing the relative level of interacting partners would change ABA sensitivity.

关键词： abscisic acid ABA receptor protein kinase protein phosphatase SLAC1.

Symptomatic accessory soleus muscle:A cause for exertional compartment syndrome in a young soldier:A case report

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World Journal of Clinical Cases 2022年第35期10卷 13022-13027页

作者： Inha woo chul Hyun Park Hongfei Yan Jeong Jin Park Department of Orthopaedic Surgery Yeungnam University HospitalDaegu 42492South Korea Department of Orthopaedics Yeungnam University HospitalDaegu 42415South Korea

BACKGROUND Accessory soleus muscle(ASM)is a rare congenital variation that is almost asymptomatic,but several papers have recently described symptomatic *** clinical features of this condition are similar to tarsal tunnel syndrome(TTS)and include pain and numbness around the medial side of the *** commonly originates from the fibula or soleus muscle and inserts into the Achilles tendon or ***,it is identified as posteromedial swelling and definitely diagnosed by magnetic resonance *** most cases,treatment is observation,but surgical excision can be considered if symptoms are *** SUMMARY A 23-year-old male Korean soldier presented with complaints of bilateral foot and ankle pain and a swelling medial to the Achilles tendon that was more pronounced on the right *** first occurred after playing soccer 10 mo before this presentation,worsened after physical exertion,and were relieved by *** had no medical history,and no one in his family had the *** results were *** tests were performed to exclude common diseases such as tumors or ***,MRI revealed a bulky accessory soleus muscle in both feet,though the patient complained of more severe pain on the right side during physical ***,surgical resection was *** surgery,a large accessory soleus muscle was noted anterior to the Achilles tendon with distinctive insertion from a normal soleus *** 12 mo after surgery,there was no pain,numbness,or swelling of the right foot or ankle,no evidence of recurrence,and the patient could do all sports *** Accessory soleus muscle should be added to the list of differential diagnosis if a patient has pain,sole numbness or swelling of the posteromedial ankle.

关键词： Accessory soleus muscle Posteromedial ankle pain Exertional compartment syndrome Tarsal tunnel syndrome Sole numbness Case report

Calcium and Calmodulin-Mediated Regulation of Gene Expression in Plants

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Molecular Plant 2009年第1期2卷 13-21页

作者： Min chul Kim woo Sik Chung Dae-Jin Yun Moo Je Cho Division of Applied Life Science (BK21 Program) Plant Molecular Biology and Biotechnology Research Center and Environmental Biotechnology National Core Research Center Gyeongsang National University Jinju 660-701 Korea

Sessile plants have developed a very delicate system to sense diverse kinds of endogenous developmental cues and exogenous environmental stimuli by using a simple Ca^2＋ ion. Calmodulin （CAM） is the predominant Ca^2＋ sensor and plays a crucial role in decoding the Ca^2＋ signatures into proper cellular responses in various cellular compartments in eukaryotes. A growing body of evidence points to the importance of Ca^2＋ and CaM in the regulation of the transcriptional process during plant responses to endogenous and exogenous stimuli. Here, we review recent progress in the identification of transcriptional regulators modulated by Ca^2＋ and CaM and in the assessment of their functional significance during plant signal transduction in response to biotic and abiotic stresses and developmental cues.

关键词： Abiotic/environmental stress calcium signaling/transport gene expression.

Reduction of chromium ore by recycled silicon cutting sludge waste with carbon addition

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Journal of Iron and Steel Research International 2019年第8期26卷 806-817页

作者： woo-gwang Jung Sakib Tanvir Hossain Fatima Tuz Johra Jong-ho Kim Young-chul Chang School of Materials Science and Engineering Kookmin University Seoul 02707 Korea Department of Materials Science and Engineering Graduate School of Kookmin University Seoul 02707 Korea Advanced Metals Research Group Research Institute of Industrial Science and Technology (RIST) Pohang City 37673 Korea Department of Mechatronics Engineering Korea University of Technology and Education Cheonan-si 31253 Korea

A basic study on the feasibility of producing ferrochrome (silicon) alloys using Si sludge waste collected from the silicon ingot cutting process was carried out, and the effects of the addition of carbon components, reaction time, and reaction temperature on the silicothermic reduction of chromium ore by Si sludge were studied. The cordierite (Mg2Al4Si5O18) phase was generated in the slag, and the Fe-Cr(-Si)-C alloy was formed by the silicothermic reduction. Moreover, the addition of carbon powder lowered the reduction initiating temperature, and the reduction ratio based on the oxygen content was evaluated at around 68-88% at 1573 K, which increased with an increase in carbon. However, it was difficult to find a significant difference in the reduction behavior in response to increasing the holding time. The reduced fer-rochrome (Fe-Cr) metal alloy droplets coalesced more intensively with an increase in reduction temperature, and for manufacturing the Fe-Cr alloy, it is estimated that a temperature of 1773 K or higher is required for good separation of the slag and the metal. Furthermore, the metallization ratio was defined, and higher values are evaluated for Fe than for Cr.

关键词： Chromium ore Ferrochrome alloy Silicon sludge waste Silicothermic reduction Reduction ratio Metallization ratio

Enrichment by air classification of indium components from In-containing scrap powders scraped by sand-blasting chamber shields of sputter coaters

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Rare Metals 2010年第1期29卷 1-8页

作者： Sungkyu Lee Soo-Bok Jeong Hang-chul Jung Hyun Seon Hong Yongseung Yun Sang Mo woo Plant Engineering Center Institute for Advanced Engineering633-2 Goan-ri Baegam-myeon Cheoin-gu Yongin-si Gyeonggi-do 449-863 Korea Division of Chemical and Materials Engineering Ajou University 5 Wonchon Youngtong Suwon Gyeonggi-do 443-749 Korea Minerals and Materials Processing Division Korea Institute of Geo-science and Mineral Resources (KIGAM) 30 Gajeong-dong Yuseong-gu Daejeon 305-350 Korea Plant Engineering Center Institute for Advanced Engineering633-2 Goan-ri Baegam-myeon Cheoin-gu Yongin-siGyeonggi-do 449-863 Korea 9 Digit Co. Ltd. 20BL-10L Namdong Industrial Complex428-9 Nonhyeon-dong Namdong-gu Incheon 405-848 Korea

Raw scrap powders containing 10 wt.% In were recovered by sand-blasting chamber shields of sputter coaters and used as a sole source of indium components for both sieving and air-classification. Sieving was performed first as a feasibility test, and enrichment of indium component was possible up to 19 wt.% with a mesh size of 635. With this experimental basis, the raw scrap powders were air-classified into 12 lots according to the revolution per minute （r/min） of a single horizontally arranged classifying wheel： 4000, 6000, 8000, 10000, 12000, and 14000 r/rain. The particle cut size varied from 56 to 5 μm with turbo wheel speeds corresponding to 4000 to 14000 r/min, respectively, and enrichment of indium component was possible in fine overflow fractions at all turbo wheel speeds while the indium components were not concentrated in all of the coarse underflow fractions. The grade of the indium components became higher with decreasing particle size of the air-classified scrap powders, with the highest grade obtained in the fine overflow fraction with a turbo wheel speed of 14000 r/min. The amount of indium in the fine overflow fractions varied between 15.9 wt.% and 31.5 wt.%. All in all, the grade or purity of the indium component improved rather significantly from 15.9 wt.% to 31.5 wt.% by air-classification, but this also resulted in overall decrease in recovery rate from 99.33% to 49.64%. Therefore, enrichment and separation of indium should be optimized for maximum recovery and grade of the indium components, which can be used as raw materials in the subsequent electro-refining processes.

关键词： indium air-classification recycling indium tin oxide gas-cyclone dry dispersion