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

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

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An easily misdiagnosed and rare cause of traumatic back pain: bilateral renal infarction caused by traumatic bilateral renal artery dissection

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World Journal of Emergency Medicine 2023年第2期14卷 155-157页

作者： woo Sung Choi Sung Youl hyun Jae-Hyug woo Jung Han Hwang Yong Su Lim Department of Emergency and Critical Care Medicine Gachon University Gil Medical CenterGachon University College of MedicineIncheon 21565Republic of Korea Department of Traumatology Gachon University Gil Medical CenterGachon University College of MedicineIncheon 21565Republic of Korea Department of Interventional Radiology Gachon University Gil Medical CenterGachon University College of MedicineIncheon 21565Republic of Korea

Dear editor,The incidence of renal infarction in patients admitted to the emergency department(ED) is approximately 0.004%.[1]Among patients with renal infarction, bilateral renal involvement has been reported in 28.6... 详细信息

关键词： traumatic infarction admitted

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Antimicrobial effect of alexidine and chlorhexidine against Enterococcus faecalis infection

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International Journal of Oral Science 2013年第1期5卷 26-31页

作者： hyun-Shik Kim Seok woo Chang Seung-Ho Baek Seung hyun Han Yoon Lee Qiang Zhu Kee-Yeon Kum Department of Conservative Dentistry Dental Research Institute and BK21 ProgramSeoul National University Dental HospitalSeoul National University School of Dentistry Department of Conservative Dentistry School of DentistryKyung Hee University Department of Oral Microbiology and Immunology Dental Research Institute and BK21 ProgramSeoul National University Dental HospitalSeoul National University School of Dentistry Department of Dentistry Wonju College of Medicine Yonsei University Division of Endodontology School of Dental MedicineUniversity of Connecticut Health Center

A previous study demonstrated that alexidine has greater affinity for the major virulence factors of bacteria than *** aim of this study was to compare the antimicrobial activity of 1%alexidine with that of 2%chlorhexidine using Enterococcus faecalis-infected dentin *** bovine dentin blocks were prepared and randomly divided into six groups of 10 *** was inoculated on 60 dentin blocks using the Luppens apparatus for 24 h and then the dentin blocks were soaked in 2%chlorhexidine or 1%alexidine solutions for 5 and 10 min,*** saline was used as a *** antimicrobial efficacy was assessed by counting the number of bacteria adhering to the dentin surface and observing the degradation of bacterial shape or membrane rupture under a scanning electron *** fewer bacteria were observed in the 2%chlorhexidine-or 1%alexidine-soaked groups than in the control group(P0.05).Ruptured or antiseptic-attached bacteria were more frequently observed in the 10-min-soaked chlorhexidine and alexidine groups than in the 5-min-soaked chlorhexidine and alexidine *** conclusion,10-min soaking with 1%alexidine or 2%chlorhexidine can be effective against *** infection.

关键词： alexidine antibacterial effect chlorhexidine Enterococcus faecalis Luppens apparatus root canal soaking scanning electron microscope

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Structural considerations in friction welding of hybrid Al_2O_3-reinforced aluminum composites

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Transactions of Nonferrous Metals Society of China 2011年第A01期21卷 42-46页

作者： In-Duck PARK Choon-Tae LEE hyun-Soo KIM woo-Jin CHOI Myung-Chang KANG Busan Metropolitan City Hall Fundamental Industries Division 2001 Jungang-ro Yeonje-gu Busan 611-735 Korea Department of Automotive & Mechanical Engineering Silla University Research & Development Center Sam-Ho precision 1256-1 Daejeo2-dong Gangseo-gu Busan 618-807 Korea National Core Research Center for Hybrid Materials Solution Pusan National University

Comparative studies on the relationship between the welding parameters and joining efficiency in the friction welding of hybrid Al203-reinforced aluminum composites were conducted. Metal matrix composites （MMCs） with 37% （volume fraction） aluminum particle were joined by friction welding. The results show that the effects of the rotation speed on the reduction rate of particle size are greater than those of the upset pressure, and the area of the MMC weld zone decreases as the joining efficiency increases, while it is considered that the joining efficiency does not increase as the reduction rate of particle size decreases. During the macro-examination of the bonding interlace, a gray discolored region was observed on the bonding interface, and the center of the region was dark gray. After the micro-examination of the bonding interface, base metal made some second particulate formed by condensed alumina particulate but discoloration part distributed minute alumina particulate without second particulate. Consequently, it was also observed that rotational speed of 3 000 r/min and upset pressure of 63.6 MPa showed a very ***.

关键词： friction welding hybrid aluminum composite bonding interface joining efficiency metal matrix composite

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Rapid detection of influenza A(H1N1)virus by conductive polymer-based nanoparticle via optical response to virus-specific binding

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Nano Research 2022年第3期15卷 2254-2262页

作者： Geunseon Park hyun-Ouk Kim Jong-woo Lim Chaewon Park Minjoo Yeom Daesub Song Seungjoo Haam Department of Chemical&Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea Division of Chemical Engineering and Bioengineering College of Art Culture and EngineeringKangwon National UniversityChuncheon-siGangwon-do 24341Republic of Korea Biohealth-machinery Convergence Engineering Kangwon National UniversityChuncheonGangwon-do 24341Republic of Korea College of Pharmacy Korea UniversitySejong 30019Republic of Korea

A recurrent pandemic with unpredictable viral nature has implied the need for a rapid diagnostic technology to facilitate timely and appropriate countermeasures against viral *** this study,conductive polymer-based nanoparticles have been developed as a tool for rapid diagnosis of influenza A(H1N1)*** distinctive property of a conductive polymer that transduces stimulus to respond,enabled immediate optical signal processing for the specific recognition of H1N1 *** poly(aniline-co-pyrrole)-encapsulated polymeric vesicles,functionalized with peptides,were fabricated for the specific recognition of H1N1 *** low solubility of conductive polymers was successfully improved by employing vesicles consisting of amphiphilic copolymers,facilitating the viral titer-dependent production of the optical *** optical response of the detection system to the binding event with H1N1,a mechanical stimulation,was extensively analyzed and provided concordant information on viral titers of H1N1 virus in 15 *** specificity toward the H1N1 virus was experimentally demonstrated via a negative optical response against the control group,***,the designed system that transduces the optical response to the target-specific binding can be a rapid tool for the diagnosis of H1N1.

关键词： influenza A(H1N1)virus conductive polymer optical property rapid detection

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Distribution of electric field for carbon nanotube assembly: Experiments (II)

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Transactions of Nonferrous Metals Society of China 2011年第A01期21卷 121-125页

作者： Soongeun KWON Soo-hyun KIM Kwang-ho KIM Myung-chang KANG hyung-woo LEE Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 305-701 Korea National Core Research Center for Hybrid Materials Solution Pusan National University

The distribution effect of electric field on the alignment and attachment of carbon nanotubes （CNTs） were investigated. The experimental results were compared with the simulation results according to three different shaped electrodes. In previous simulation, the round shaped electrodes were expected to be more effective for aligning and attaching a single CNT between two electrodes than conical or rectangular shaped electrodes. To verify the simulation results, three different shaped electrodes were introduced and a single multi-walled carbon nanotube （MWNT） was attached. The optimal conditions for aligning and attaching MWNTs such as the frequency, applied voltage and concentration of MWNTs solution were investigated. Through repeated experiments, frequency of 100 kHz-10 MHz, applied voltage of 0.3-1.3 V^s/~m, concentration of 5 ktg/mL in MWNTs solution were obtained as a possible condition range to attach MWNTs. Under these conditions, the yield of MWNTs attachment between two electrodes was up to 70%. In previous simulation, furthermore, it was verified that the size of the stable or quasi-stable region made CNTs aligned and attached on different shaped electrodes from the comparison of the experimental and simulation results. Most single MWNT attachment was accomplished on the round shaped electrodes.

关键词： carbon nanotubes dielectrophoresis round shaped electrode simulation

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Does hemispheric lateralization influence therapeutic effects of transcranial direct current stimulation?

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Neural Regeneration Research 2016年第1期11卷 126-129页

作者： Yong hyun Kwon Kyung woo Kang Na Kyung Lee Sung Min Son Department of Physical Therapy Yeungnam University College Department of Physical Therapy College of Rehabilitation Science Daegu University Department of Physical Therapy College of Health Science Cheongju University

This study investigated the effect of transcranial direct current stimulation（t DCS） polarity depending on lateralized function of task property in normal individuals performing visuomotor and simple repetitive tasks. Thirty healthy participants with no neurological disorders were recruited to participate in this study. Participants were randomly allocated into active or control condition. For the active condition, t DCS intensity was 2 m A with stimulation applied for 15 minutes to the right hemisphere（t DCS condition）. For the sham control, electrodes were placed in the same position, but the stimulator was turned off after 30 seconds（sham condition）. The tapping and tracking task tests were performed before and after for both conditions. Univariate analysis revealed significant difference only in the tracking task. For direct comparison of both tasks within each group, the tracking task had significantly higher Z score than the tapping task in the t DCS group（P 〈 0.05）. Thus, our study indicates that stimulation of the right hemisphere using t DCS can effectively improve visuomotor（tracking） task over simple repetitive（tapping） task.

关键词： nerve regeneration transcranial direct current stimulation visuomotor task tracking task task property hemispheric lateralization neural regeneration

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Effect of various red phosphorescent dopants in single emissive white phosphorescent organic light-emitting devices

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Chinese Optics Letters 2017年第5期15卷 53-57页

作者： Jong hyun Lim Jin wook Kim Geum Jae Yoon Ayse Turak woo Young Kim Department of Green Energy & Semiconductor Engineering Hoseo University Asan 31499 Korea R&D Center A-PRO Co. Ltd. Gunpo 15830 Korea Department of Electrical and Electronic Engineering The University of Hong Kong Hong Kong 070 China Department of Engineering Physcis McMaster University Hamilton Ontario L8S 4L7 Canada

In order to realize single emissive white phosphorescent organic light-emitting devices （PHOLEDs） with three color phosphorescent dopants （red, green, and blue）, the energy transfer between the host material and the three dopants, as well as the among the three dopants themselves, should be considered and optimized. To explore the effect of red phosphorescent dopant on the color rendering index （CRI）, the authors investigate the wavelength position of the maximum emission peak from three phosphorescent dopants. The CRI and luminous efficiency of white PHOLED in which Ir（pq）2（acac） acts as the red phosphorescent dopant are found to be greater than those of devices prepared using Ir（piq）3 and Ir（btp）2（acac） as the emission spectrum has a relatively high intensity near the human perception of blue, red, and green wavelengths. Furthermore, we demonstrate that the performance of the three dopants is related to the absorption characteristics of the red phosphorescent dopant. With a maximum emission peak at 600 nm, Ir（pq）2（acac） has a higher intensity in the concave section between 550 and 600 nm seen for red and blue dopants. In addition, the long metal-to-ligand charge transfer （MLCT） absorption tail of Ir（pq）2（acac） overlaps with the emission spectra of the green dopant, enhancing emission. Such energy transfer mechanisms are confirmed to optimize white emission in the single emissive white PHOLEDs.

关键词： Charge transfer Current density Doping (additives) Emission spectroscopy Energy transfer Light emission

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Is effect of transcranial direct current stimulation on visuomotor coordination dependent on task difficulty?

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Neural Regeneration Research 2015年第3期10卷 463-466页

作者： Yong hyun Kwon Kyung woo Kang Sung Min Son Na Kyung Lee Department of Physical Therapy Yeungnam University College Department of Physical Therapy College of Rehabilitation ScienceDaegu University Department of Physical Therapy College of Health Science Cheongju University

Transcranial direct current stimulation （tDCS）, an emerging technique for non-invasive brain stimulation, is increasingly used to induce changes in cortical excitability and modulate motor behavior, especially for upper limbs. The purpose of this study was to investigate the effects of tDCS of the primary motor cortex on visuomotor coordination based on three levels of task difficulty in healthy subjects. Thirty-eight healthy participants underwent real tDCS or sham tDCS. Using a single-blind, sham-controlled crossover design, tDCS was applied to the primary motor cortex. For real tDCS conditions, tDCS intensity was 1 mA while stimulation was applied for 15 minutes. For the sham tDCS, electrodes were placed in the same position, but the stimu- lator was turned off after 5 seconds. Visuomotor tracking task, consisting of three levels （levels 1, 2, 3） of difficulty with higher level indicating greater difficulty, was performed before and after tDCS application. At level 2, real tDCS of the primary motor cortex improved the accurate index compared to the sham tDCS. However, at levels 1 and 3, the accurate index was not significantly increased after real tDCS compared to the sham tDCS. These findings suggest that tasks of mod- erate difficulty may improve visuomotor coordination in healthy subjects when tDCS is applied compared with easier or more difficult tasks.

关键词： neural regeneration transcranial direct current stimulation visuomotor coordination task difficulty primary motor area motor learning neural regeneration

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Effect of Post-Rolling after ECAP on Superplastic Behavior of Commercial Al-Mg Alloy

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Journal of Rare Earths 2004年第z2期22卷 53-56页

作者： Dong Hyuk Shin Byung Du Ahn hyun Soo woo Kyeom Kim Kyung-Tae Park Department of Metallurgy and Materials Science Hanyang UniversityAnsan 425-791Korea Department of Metallurgy and Materials ScienceHanyang UniversityAnsan 425-791Korea Department of Metallurgy and Materials ScienceHanyang UniversityAnsan 425-791Korea Department of Metallurgy and Materials ScienceHanyang UniversityAnsan 425-791Korea Division of Advanced Materials Science & EngineeringHanbat National UniversityTaejon 305-719Korea

A commercial Al-Mg alloy was subjected to equal channel angular pressing of 4 passes with and without postrolling, and the effects of post-rolling on the deformation characteristics of the alloy at 723 K were examined. Post-rolling was found to influence the deformation behavior significantly. The deformation behavior of the alloy processed only by equal channel angular pressing was characterized by (a) localized deformation indicated by severe surface prominence and depression, (b) the strain rate sensitivity of 0.33, and (c) moderate high strain rate superplastic elongations. By contrast, that of the alloy processed by equal channel angular pressing and post-rolling (70 % thickness reduction) was manifested by (a) uniform deformation associated with grain boundary sliding throughout the sample, (b) a sigmoidal behavior showing the strain rate sensitivity of 0.45 at the intermediate strain rates in the logarithmic stress-strain rate curve, and (c) very large high strain rate superplastic elongations.

关键词： high superplasticity equal channel angular pressing rolling deformation mechanisms rare earths

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