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Meningioma originating from the superior petrosal vein without dural attachment:A case report

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World Journal of Clinical Cases 2024年第17期12卷 3156-3160页

作者： Yeong-Jin Kim Shin Jung Tae-Young Jung Kyung-Sub moon In-Young Kim Department of Neurosurgery Chonnam National University Medical SchoolChonnam National University Hwasun HospitalHwasun 58128South Korea

BACKGROUND Meningioma in the cerebellopontine angle(CPA)without dural attachment is extremely *** report a unique case of meningioma derived from the superior petrosal vein without dural *** SUMMARY A 44-year-old right-handed woman presented with a two-month history of headache and *** magnetic resonance imaging showed a well-defined contrast-enhancing lesion in the right CPA without a dural tail *** resection was performed using a right retro sigmoid approach.A dural attachment was not seen at the tentorium or posterior surface of the petrous *** tumor was firmly adherent to the superior petrosal *** origin site was cauterized and resected with the preservation of the superior petrosal vein.A diagnosis of meningothelial meningioma was *** patient’s headache and tinnitus gradually disappeared,and a recurrence was not observed five years after the *** The rare occurrence of meningioma without dural attachment makes it difficult to determine dural attachment before *** absence of dural attachment makes it easy to completely resect such *** related to tumors should be removed carefully,considering the possible presence of tumor stem cells in the microvessels.

关键词： Meningioma Dura mater Superior petrosal vein Tumor stem cell Case report

机器人食管裂孔疝修补手术的优势、难点及对策

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中国实用外科杂志 2024年第4期44卷 411-414页

作者：李晨田文中国人民解放军总医院第一医学中心普通外科医学部甲状腺(疝)外科北京100853

机器人手术是外科领域巨大的进步,基于其具有裸眼3D成像、7个自由度的仿真手腕系统、人体力学设计等方面的优势,有助于提高食管裂孔疝修补术中游离膈肌脚、关闭食管裂孔、放置补片以及缝合胃底折叠等手术操作的精准性及安全性。尽管在... 详细信息

机器人手术是外科领域巨大的进步,基于其具有裸眼3D成像、7个自由度的仿真手腕系统、人体力学设计等方面的优势,有助于提高食管裂孔疝修补术中游离膈肌脚、关闭食管裂孔、放置补片以及缝合胃底折叠等手术操作的精准性及安全性。尽管在机器人食管裂孔疝修补手术中同样存在巨大裂孔疝手术操作难度大、医生培训周期长、治疗费用高等难点及不足,但相信未来通过加强规范训练、降低机器人使用成本等,机器人手术系统将在食管裂孔疝修补手术领域更加安全及广泛开展,发挥出越来越重要的应用价值。

关键词：食管裂孔疝机器人手术系统胃食管反流病多学科综合治疗协作组

Robust vision-based displacement measurement and acceleration estimation using RANSAC and Kalman filter

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Earthquake Engineering and Engineering Vibration 2023年第2期22卷 347-358页

作者： Jongbin won Jong-Woong Park Min-Hyuk Song Youn-Sik Kim Dosoo moon Department of Civil and Environmental Engineering Chung-Ang UniversityDongjakSeoul 06974Korea Department of Smart Cities Chung-Ang UniversityDongjakSeoul 06974Korea R&D Division Tantan Safety co.LtdSeongdongSeoul 04798Korea Department of Civil and Environmental Engineering University of Hawaii at ManoaHonolulu 96822USA

Computer vision(CV)-based techniques have been widely used in the field of structural health monitoring(SHM)owing to ease of installation and cost-effectiveness for displacement *** paper introduces computer vision based method for robust displacement measurement under occlusion by incorporating random sample consensus(RANSAC).The proposed method uses the Kanade-Lucas-Tomasi(KLT)tracker to extract feature points for tracking,and these feature points are filtered through RANSAC to remove points that are noisy or *** the filtered feature points,the proposed method incorporates Kalman filter to estimate acceleration from velocity and displacement extracted by the *** validation,numerical simulation and experimental validation are *** the simulation,performance of the proposed RANSAC filtering was validated to extract correct displacement out of group of displacements that includes dummy displacement with noise or *** the experiment,both RANSAC filtering and acceleration measurement were validated by partially occluding the target for tracking attached on the *** results demonstrated that the proposed method successfully measures displacement and estimates acceleration as compared to a reference displacement sensor and accelerometer,even under occluded conditions.

关键词： computer vision structural displacement structural acceleration RANSAC Kalman filter

Experimental study and field application of calcium sulfoaluminate cement for rapid repair of concrete pavements

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Frontiers of Structural and Civil Engineering 2017年第3期11卷 338-345页

作者： Yanhua GUAN Ying GAO Renjuan SUN moon C. won Zhi GE Department of Transportation Engineering School of Civil Engineering Shandong University Jinan 250061 China Department of Civil Environment and Construction Engineering Texas Tech University TX 79409-1023 USA

The fast-track repair of deteriorated concrete pavement requires materials that can be placed, cured, and opened to the traffic in a short period. Type III cement and Calcium Sulfoaluminate （CSA） cement are the most commonly used fast-setting hydraulic cement （FSHC）. In this study, the properties of Type III and CSA cement concrete, including compressive strength, coefficient of thermal expansion （CTE） and shrinkage were evaluated. The test results indicate that compressive strength of FSHC concrete increased rapidly at the early age. CSA cement concrete had higher early-age and long term strength. The shrinkage of CSA cement concrete was lower than that of Type III cement concrete. Both CSA and Type III cement concrete had similar CTE values. Based on the laboratory results, the CSA cement was selected as the partial-depth rapid repair material for a distressed continuously reinforced concrete pavement. The data collected during and after the repair show that the CSA cement concrete had good short-term and long-term performances and, therefore, was suitable for the rapid repair of concrete pavement.

关键词： Calcium Sulfoaluminate (CSA) cement Type III cement coefficient of thermal expansion (CTE) shrinkage,rapid repair

Absorption characteristics of new solvent based on a blend of AMP and 1,8-diamino-p-menthane for CO_2 absorption

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Journal of Environmental Sciences 2012年第5期24卷 897-902页

作者： Sang-Sup Lee seong-Man Mun won-Joon Choi Byoung-Moo Min Sang-won Cho Kwang-Joong Oh Department of Environmental Engineering Chungbuk National University Department of Environmental Engineering Pusan National University Corporate R&D Institute Fuel Cell System Development Team Doosan Heavy Industries & Construction Greenhouse Gas Research Center Korea Institute of Energy Research Department of Energy and Environment Korea Polytechnic VII College

Aqueous 1,8-diamino-p-menthane （KIER-C3） and commercially available amine solutions were tested for CO2 absorption. A 2-amino-2-methyl-1-propanol （AMP） solution with an addition of KIER-C3 showed 9.3% and 31.6% higher absorption rate for CO2 than the AMP solution with an addition of monoethanolamine （MEA） and ammonia （NH3）, respectively. The reaction rate constant for CO2 absorption by the AMP/KIER-C3 solution was determined by the following equation： k2,AMP/C3 = 7.702×106 exp （-2248.03/T）. A CO2 loading ratio of the AMP/KIER-C3 solution was also 2 and 3.4-times higher than that of the AMP/NH3 solution and the AMP/MEA solution, respectively. Based on the experimental results, KIER-C3 may be used as an excellent additive to increase CO2 absorption capability of AMP.

关键词： carbon dioxide absorption rate and capacity 1 8-diamino-p-menthane 2-amino-2-methyl-1-propanol

Grade-4 commercially pure titanium with ultrahigh strength achieved by twinning-induced grain refinement through cryogenic deformation

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Journal of Materials Science & Technology 2021年第7期66卷 193-201页

作者： seong-Woo Choi Jae Sukjeong Jong Woo won Jae Keun Hong Yoon Suk Choi Titanium Department.Korea Institute of Materials Science Changwon51508Republic of Korea School of Materials Science and Engineering Pusan National UniversityPusan.46241Republic of Korea Materials and Manufacturing Development Team Doosan Heavy Industries and ConstructionChangwon51711Republic of Korea

The yield strength of commercially pure(CP) Ti of ASTM grade 4, the strongest among all the CP-Ti grades, is too low for structural applications that require high-strength materials. Here, we demonstrate the strengthening of grade-4 CP Ti by cryogenic-temperature rolling(CTR), which enables deformation twinning in grade-4 CP Ti to achieve twinning-induced grain refinement. CTR activated {11.22} twinning and {10.12} twinning, which are the most common twinning systems in pure Ti, whereas room-temperature rolling(RTR) did not activate any twinning system. CTR with imposing an area reduction of just 30% significantly increased the yield strength of the CP Ti to 946 MPa, which is not achievable through typical processes performed at or above room temperature and is comparable to that of commercial Ti-6 Al-4 V. The significant increase in strength was due to microstructural strengthening caused by twinning-induced grain refinement, combined with dislocation accumulation. In contrast to RTR, CTR greatly increased the stress concentration at grain boundaries(GBs), which caused the unusual activation of twinning in the grade-4 CP Ti by facilitating twin nucleation at GBs. The stress concentration increased because CTR activated the slip to a lesser extent compared to RTR, thereby reducing the strain compatibility between neighboring grains. These results will contribute to development of ultrahigh-strength CP Ti and may thereby extend its use to structural applications that require high-strength materials.

关键词： Titanium Twinning Cryogenic deformation Grain refinement Tensile properties

表面展示非洲猪瘟病毒p54蛋白细菌样颗粒的构建及其对小鼠免疫原性评价

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中国动物传染病学报 2024年

作者：黄京山高天琦 Assad moon 吴红霞仇华吉孙元吉林农业大学动物医学院中国农业科学院哈尔滨兽医研究所动物疫病防控全国重点实验室黑龙江八一农垦大学动物科技学院

非洲猪瘟（African swine fever， ASF）的流行极大地影响了我国养猪业的发展，且我国目前尚无安全有效的ASF疫苗。为了提供ASF疫苗研发的新策略，本研究构建了表面展示非洲猪瘟病毒p54蛋白的细菌样颗粒。通过构建重组质粒pCold-TF-p54... 详细信息

非洲猪瘟（African swine fever， ASF）的流行极大地影响了我国养猪业的发展，且我国目前尚无安全有效的ASF疫苗。为了提供ASF疫苗研发的新策略，本研究构建了表面展示非洲猪瘟病毒p54蛋白的细菌样颗粒。通过构建重组质粒pCold-TF-p54-PA，将重组质粒转化大肠杆菌Rosetta(DE3)，获得重组菌pCold-TF-p54-PA/Rosetta，并将食品级乳酸乳球菌NZ3900用热和酸处理后得到仅含肽聚糖的细菌样颗粒（Bacterium-like particles， BLPs），用处理后的BLPs与经诱导表达的pCold-TF-p54-PA/Rosetta裂解液共孵育制备了表面锚定展示p54蛋白的BLPs。将BLPs-p54对小鼠进行灌胃及肌注免疫，结果表明，肌注组小鼠在二免后7 d产生了高水平的血清特异性IgG抗体，口服组小鼠在二免后7 d，2/5的小鼠血清特异性IgG抗体转阳。上述结果表明，BLPs-p54具有良好的免疫原性，是一种有前途的ASF疫苗候选策略。

关键词：非洲猪瘟细菌样颗粒 p54蛋白免疫原性

Ischemic colitis after mesotherapy combined with anti-obesity medications

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World Journal of Gastroenterology 2010年第12期16卷 1537-1540页

作者： Jong Bin Kim won moon Seun Ja Park Moo In Park Kyu-Jong Kim Jae Nam Lee seong Joo Kang Lee La Jang Hee Kyung Chang Department of Internal Medicine Kosin University College of Medicine Department of Pathology Kosin University College of Medicine

Mesotherapy and anti-obesity medications are gradually gaining worldwide popularity for purposes of body contouring and weight *** adverse effects are various,but there is a tendency to disregard *** colitis is one of the most common diseases associated with non-obstructive blood vessel ***,there have been no case reports about the adverse effects resulting from mesotherapy only or in combination with anti-obesity *** report on an interesting case of ischemic colitis after mesotherapy combined with anti-obesity medications in a 39-year-old female who had no risk factors.

关键词： Mesotherapy Anti-obesity medications Adverse effects Ischemic colitis

Zircon U-Pb ages and O-Hf isotopes of Quaternary trachytes from the East Sea:Implications for the genesis of low-δ^(18)O magmas

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Geoscience Frontiers 2024年第2期15卷 41-54页

作者： Hyun-Ok Choi Jihye Oh Chang Hwan Kim Soon Young Choi won Hyuck Kim Chan Hong Park Dokdo Research Center East Sea Research InstituteKorea Institute of Ocean Science and TechnologyUljin 36315Republic of Korea Deep-Sea and Seabed Mineral Resources Research Center Korea Institute of Ocean Science and TechnologyBusan 49111Republic of Korea Division of Science Education Kangwon National University1 Gangwondaehak-gilChuncheon-siGangwon-do 24341Republic of Korea

Quaternary intraplate magmatism formed several volcanic islands and seamounts,including Dokdo(DD),Ulleungdo(UD),Simheungtack(ST),Anyongbok,and Isabu in the southwest of the East Sea back-arc *** this study,we present whole-rock geochemical,zircon U–Pb age,and in situ O–Hf isotope data for the submerged volcanic rocks from DD,UD,and ST to provide new insights into the eruption timing of these volcanoes and constrain the magma evolution *** samples used in this study were trachytes and exhibited ferroan,alkalic,and metaluminous to weakly peraluminous *** showed light rare earth element(REE)-enriched patterns with(La/Yb)N ratios of 25.3–31.7 and mostly negative Eu anomalies in a chondrite-normalized REE *** addition,they were enriched in large-ion lithophile elements and high field strength elements;they exhibited positive Pb anomalies and strongly negative Ba,Sr,P,and Ti *** zircons yielded a weighted-mean 206Pb/238U age of 2.61,0.348–0.704,and 2.76–2.94 Ma for the DD,UD,and ST trachytes,*** zircons exhibited lowerδ^(18)O values than normal depleted mantle values,regardless of the crystallization age and spatial distribution of ***δ^(18)O values showed no correlation with U contents or Th/U ratios,indicating that the lowδ^(18)O signatures were of primary magmatic *** Hf isotopic compositions of the zircons were relatively heterogeneous but predominately characterized by positive eHf *** O–Hf mixing modeling revealed that low-δ^(18)O rocks with positive eHf values from the UD and ST volcanoes were derived from a hybrid source of recycled juvenile crustal materials with low-δ^(18)O and positive eHf signatures and an enriched mantle source with normalδ^(18)O and negative eHf *** juvenile oceanic crust in the source was likely metasomatized by seawater at high temperatures prior to *** contrast,the felsic magma that formed the DD volcanoes may have assimilated with regional

关键词： Quaternary intraplate volcanism East Sea Zircon O-Hf isotopes Low-δ^(18)O magma Recycled juvenile oceanic crust