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npj Flexible Electronics 2022年第1期6卷 699-707页

作者： Da Bin Kim Ju han Sun Min Sung Min Seong Kim Bo Kyoung Choi Sung Jun Park Hyae Rim Hong Hong Je Choi Byeong Kon Kim chung Hee Park Jong Hoo Paik Joon-Seok Lee Yong Soo Cho Department of Materials Science and Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Textile Engineering and Technology Yeungnam UniversityGyeongsan 38541Republic of Korea Deparment of Textile Merchandising and Fashion DesignSeoul National UniversitySeoul 08826Republic of Korea Samsung Electro-Mechanics Co.Ltd. Suwon 16674Republic of Korea Ceratorq Inc. Seoul 08511Republic of Korea Electronic Materials and Component Center Korea Institute of Ceramic Engineering and TechnologyJinju 52851Republic of Korea

Wearable pressure sensors having versatile device structures have been extensively investigated to achieve high sensitivity under mechanical ***,we introduce piezoelectric pressure sensors based on fabrics woven using polyvinylidene fluoride(PVDF)weft and polyethylene terephthalate(PET)warp yarns with different weave structures:1/1(plain),2/2,and 3/3 weft rib *** dependence of the pressure-sensing performance on the weave pattern is demonstrated with an actual large-scale fabric up to the~2 m *** optimized pressure sensor with a 2/2 weft rib pattern produced a high sensitivity of 83 mV N−1,which was 245%higher than that of the 1/1 *** detection performance of the optimal fabric was extensively evaluated with a variety of ambient input sources,such as pressing,bending,twisting,and crumpling,as well as various human ***,a large allfabric pressure sensor with arrayed touch pixel units demonstrated highly sensitive and stable sensing performance.

关键词： pattern fluoride piezoelectric

基于Verhulst灰色模型的矿山巷道流变性围岩地质工学参数智能反分析

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Journal of Central South University 2021年第10期28卷 3099-3116页

作者： Un Chol han chung Song CHOE Kun Ui HONG Hyon Il han School of Science and Engineering Kim Chaek University of TechnologyPyongyang 999093Democratic People's Republic of Korea Faculty of Mining Engineering Kim Chaek University of TechnologyPyongyang 999093Democratic People's Republic of Korea

采用基于灰色Verhulst模型(GVM)的智能反分析(IBA)方法确定隧道围岩的岩土参数,并通过对朝鲜“6.13”煤矿−600 m水平主巷道试验验证了该方法的准确性。用于反分析的位移分量为开挖结束时监测到的拱顶沉降和边墙收敛量,以及GVM预测的最... 详细信息

采用基于灰色Verhulst模型(GVM)的智能反分析(IBA)方法确定隧道围岩的岩土参数,并通过对朝鲜“6.13”煤矿−600 m水平主巷道试验验证了该方法的准确性。用于反分析的位移分量为开挖结束时监测到的拱顶沉降和边墙收敛量,以及GVM预测的最终闭合量。利用FLAC3D的人工神经网络(ANN)和Burgers蠕变粘塑性(CVISC)模型,得到了位移与反分析参数之间的非线性关系。然后,利用遗传算法(GA)确定了隧道围岩的最优参数,并利用GVM预测了最终开挖和闭坑时的两组实测位移。采用反分析参数数值模拟的计算位移与原位位移的最大绝对误差(MAE)和标准差(Std)分别小于6 mm和2 mm。结果表明,该方法可用于确定巷道、地下空区、矿山空场和采场的设计参数和稳定性。

关键词：智能反分析(IBA) 灰色Verhulst模型(GVM) 闭合预测矿山巷道 Burger蠕变黏塑性模型

Scalp electroacupuncture at the Baihui acupoint (DU 20) improves functional recovery in rats with cerebral ischemia Association with increased expression of vascular endothelial growth factors

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Neural Regeneration Research 2011年第36期6卷 2822-2828页

作者： Min-Wook Kim You Chul chung Hee Chan Jung Moon-Seo Park Young-Min han Yong-An chung Lee-So Maeng Sang-In Park Jiyeon Lim Seung Chan Kim Woo-Seok Im Jin Young chung Minky Kim Manho Kim Institute of Catholic Integrative Medicine (ICIM) Incheon St. Mary’s Hospital Catholic University of Korea Incheon Korea Department of Rehabilitation Medicine Catholic University of Korea Seoul Korea Department of Neurology Seoul National University Hospital SNUMRC Seoul Korea Department of Biotechnology Yonsei University Seoul Korea Department of Neurology Seoul Medical Center Seoul Korea

In this study, we induced cerebral infarction in rats by occluding the right middle cerebral artery, and tested the effects of electroacupuncture at the Baihui acupoint （DU 20）. Motor and sensory function was tested using Garcia’s scale and motor weakness grading, and the expression of vascular endothelial growth factor in the brain was quantified using immunoblotting and immunohistochemistry. We found that scalp electroacupuncture at DU 20 significantly improved motor performance and sensory function in rats with stroke, and this was accompanied by an increased expression of vascular endothelial growth factor in the ischemic brain tissue and peri-ischemic area. In addition, Pearson correlation analysis showed that the improvements in functional recovery were correlated with the increased expression of vascular endothelial growth factor.

关键词： electroacupuncture cerebrovascular disorder vascular endothelial growth factor Baihui acupoint functional improvement

Ventricular fibrillation and sudden cardiac arrest in apical hypertrophic cardiomyopathy:Two case reports

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World Journal of Clinical Cases 2021年第35期9卷 11102-11107页

作者： Yae Min Park Albert Youngwoo Jang Wook-Jin chung Seung Hwan han Christopher Semsarian In Suck Choi Department ofCardiology Gachon University Gil Medical CenterIncheon 21556South Korea Agnes Ginges Centre for Molecular Cardiology Centenary Institute The University of SydneySydney 21556Australia

BACKGROUND Apical hypertrophic cardiomyopathy(HCM)is considered to have a benign prognosis in terms of cardiovascular *** serial case report aimed to raise awareness of ventricular fibrillation(VF)and sudden cardiac death(SCD)in apical *** SUMMARY Here we describe two rare cases of apical HCM that presented with documented VF and sudden cardiac *** patients were previously not recommended for primary prevention using implantable cardioverter-defibrillator(ICD)therapy based on current ***,both received ICD therapy for the secondary prevention of *** These cases illustrate serious complications including VF and aborted sudden cardiac arrest in apical HCM patients who are initially not candidates for primary prevention using ICD implantation based on current guidelines.

关键词： Apical hypertrophic cardiomyopathy Ventricular fibrillation Implantable cardioverter-defibrillator Case report

Development of a nano-immunomodulator encapsulating R837 and caffeine for combined radio-/immunotherapy against orthotopic breast cancer

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Progress in Natural Science:Materials International 2020年第5期30卷 697-706页

作者： Te-I Liu Yuan-chung Tsai Te-Ming Wang Siou-han Chang Ying-Chieh Yang Hsin-Hung Chen Hsin-Cheng Chiu Department of Biomedical Engineering and Environmental Sciences National Tsing Hua University Department of Radiology National Taiwan University Hospital Hsin-Chu Branch

Immunotherapy is an ascendant approach in cancer treatment. It shows more pronounced effects on killing cancer cells in a specific manner in particular against metastasis more than traditional techniques, such as chemotherapy or surgery. However, tumor immunosuppression limits the response of the immune system to cancer development. In this study, we developed a lipid-based nanocarrier doubly loaded with imiquimod(R837), a toll-like receptor 7 agonist, and caffeine, an adenosine receptor antagonist. This R837/caffeine loaded nanocarrier served as a nano-immunomodulator(RC-n IM) for combination treatment with radiotherapy(RT)against orthotopic breast cancer. RT-induced immunogenic cell death facilitated the production of tumor antigen and elicited the immune response in corporation with R837-medaited activation of antigen-presenting cells(APCs) while RC-n IMs being adopted. Additionally, caffeine, an adenosine analog, can successfully compete with adenosine in the tumor. The tumor-bearing mice that received RT together with RC-n IMs experienced the best antitumor effects and exhibited higher levels of T cells and APCs within the tumor; the growth of secondary tumors was also limited. This work serves as a proof-of-concept study for the development of a new immunotherapy strategy against cancer.

关键词： Radiotherapy Drug delivery Immunomodulation Combination therapy Breast cancer

Effect of liver cirrhosis on long-term outcomes after acute respiratory failure: A population-based study

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World Journal of Gastroenterology 2017年第12期23卷 2201-2208页

作者： Chih-Cheng Lai chung-han Ho Kuo-Chen Cheng Chien-Ming Chao Chin-Ming Chen Willy Chou Department of Intensive Care Medicine Chi Mei Medical Center Departments of Medical Research Chi Mei Medical Center Internal Medicine Chi Mei Medical Center Department of Safety Health and EnvironmentChung Hwa University of Medical Technology Department of Recreation and Health-Care Management Chia Nan University of Pharmacy and Science

AIM To assessed the effect of liver cirrhosis(LC) on the poorly understood long-term mortality risk after firstever mechanical ventilation(1-MV) for acute respiratory *** All patients in Taiwan given a 1-MV between 1997 and 2013 were identified in Taiwan's Longitudinal Health Insurance Database 2000. Each patient with LC was individually matched, using a propensity-score method, to two patients without LC. The primary outcome was death after a *** A total of 16653 patients were enrolled: 5551 LC-positive (LC^([Pos])) patients, including 1732 with cryptogenic LCs and 11102 LC-negative(LC^([Pos])) controls. LC^([Pos]) patients had more organ failures and were more likely to be admitted to medical department than were LC^([Pos]) controls. LC^([Pos]) patients had a significantly lower survival rate(AHR = 1.38, 95%CI: 1.32-1.44). Moreover, the mortality risk was significantly higher for patients with non-cryptogenic LC than for patients with cryptogenic LC(AHR = 1.43, 95%CI: 1.32-1.54) and patients without LC(AHR = 1.56, 95%CI: 1.32-1.54). However, there was no significant difference between patients with cryptogenic and without LC(HR = 1.05, 95%CI: 0.98-1.12).CONCLUSION LC, especially non-cryptogenic LC, significantly increases the risk of death after a 1-MV.

关键词： Liver cirrhosis Mechanical ventilation Outcome

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好氧生物流化床处理抗生素废水的试验研究

工业水处理 2005年第12期25卷 29-33页

作者：杜大恒陈胜孙德智 Jong shik chung 哈尔滨工业大学市政环境工程学院黑龙江哈尔滨150090

采用以新型高分子材料为生物载体的生物流化床工艺处理高浓度的抗生素废水。试验结果表明,该载体挂膜容易,启动快,一个月后载体附着的生物量可达4136mg/L,在载体表观体积为反应器总体积的50%、进水COD容积负荷低于2.5kg/(m3·d)的情况下... 详细信息

采用以新型高分子材料为生物载体的生物流化床工艺处理高浓度的抗生素废水。试验结果表明,该载体挂膜容易,启动快,一个月后载体附着的生物量可达4136mg/L,在载体表观体积为反应器总体积的50%、进水COD容积负荷低于2.5kg/(m3·d)的情况下,COD去除率可达85%以上。该生物流化床对BOD5的去除率平均高达89.21%,与COD的去除率具有同步性。并研究了反应器中悬浮污泥浓度SS和总生物量MLSS在整个实验期间的动态变化,表明稳定运行时SS和总MLSS基本上稳定不变,当系统受到高负荷冲击时,SS降低,总MLSS升高,而且生物活性也大幅度提高,生物膜处在适应期,反应器抗冲击负荷能力增强。

关键词：生物流化床生物载体抗生素废水生物膜

Full-color micro-LED display with high color stability using semipolar(20-21) InGaN LEDs and quantum-dot photoresist

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Photonics Research 2020年第5期8卷 630-636页

作者： SUNG-WEN HUANG CHEN YU-MING HUANG KONTHOUJAM JAMES SINGH YU-CHIEN HSU FANG-JYUN LIOU JIE SONG JOOWON CHOI PO-TSUNG LEE CHIEN-chung LIN ZHONG CHEN JUNG han TINGZHU WU HAO-chung KUO Department of Photonics&Graduate Institute of Electro-Optical Engineering College of Electrical and Computer EngineeringTaiwan Chiao Tung UniversityHsinchu 30010China Institute of Photonic System Taiwan Chiao Tung UniversityTainan 71150China Saphlux Inc. BranfordConnecticut 06405USA Departm ent of Electronic Science Fujian Engineering Research Center for Solid-State LightingXiamen UniversityXiamen 361005China Departm ent of Electrical Engineering Yale UniversityNew HavenConnecticut 06520USA

Red-green-blue(RGB)full-color micro light-emitting diodes(μ-LEDs)fabricated from semipolar(20-21)wafers,with a quantum-dot photoresist color-conversion layer,were *** semipolar(20-21)In Ga N/Ga Nμ-LEDs were fabricated on large(4 in.)patterned sapphire substrates by orientation-controlled *** semipolarμ-LEDs showed a 3.2 nm peak wavelength shift and a 14.7%efficiency droop under 200 A∕cm2injected current density,indicating significant amelioration of the quantum-confined Stark *** of the semipolarμ-LEDs’emission-wavelength stability,the RGB pixel showed little color shift with current density and achieved a wide color gamut(114.4%NTSC space and 85.4%Rec.2020).

关键词： LEDs photoresist sapphire

Low skeletal muscle mass is associated with non-alcoholic fatty liver disease in Korean adults： the Fifth Korea National Health and Nutrition Examination Survey

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Hepatobiliary & Pancreatic Diseases International 2016年第1期15卷 39-47页

作者： hee yeon kim chang wook kim chung-hwa park jong young choi kyungdo han anwar t merchant yong-moon park division of hepatology department of internal medicinecollege of medicinethe catholic university of korea222Banpo-daeroSeocho-guSeou1 06591Republic of Korea department of biostatistics college of medicinethe catholic university of korea222Banpo-daeroSeocho-guSeou1 06591Republic of Korea department of epidemiology and biostatistics arnold school of public healthuniversity of south carolinaColumbiaSC 29208USA epidemiology branch national institute of environmental health sciencesnational institutes of healthdepartment of health and human servicesResearch Triangle ParkNC 27709USA

BACKGROUND： Sarcopenia and non-alcoholic fatty liver dis- ease （NAFLD） share similar pathophysiological mechanisms, and the relationship between sarcopenia and NAFLD has been recently investigated. The study investigated whether low skel- etal muscle mass is differentially associated with NAFLD by gender in Korean adults. METHODS： We conducted a cross-sectional analysis of the data from the Fifth Korea National Health and Nutrition Examination Survey. The skeletal muscle index （SMI） was obtained by the appendicular skeletal muscle mass divided by the weight. NAFLD was defined as a fatty liver index （FLI）〉60 in the absence of other chronic liver disease. RESULTS： Among the included subjects, 18.3% （SE： 1.4%） in men and 7.0% （SE： 0.7%） in women were classified as having FLI-defined NAFLD. Most of the risk factors for FLI-defined NAFLD showed a significant negative correlation with the SMI in both genders. Multiple logistic regression analysis showed that low SMI was associated with FLI-defined NAFLD, inde- pendent of other metabolic and lifestyle parameters in both genders [males： odds ratio （OR）=1.35; 95% confidence inter- val （CI）： 1.17-1.54; females： OR=1.36; 95% CI： 1.18-1.55]. The magnitude of the association between FLI-defined NAFLD and low SMI was higher in middle aged to elderly males （OR-1.50; 95% CI： 1.22-1.84） than in males less than 45 years of age （OR=1.25; 95% CI： 1.02-1.52） and in premenopausal females （OR=l.50; 95% CI： 1.12-2.03） than in postmenopausal females （OR-1.36; 95% CI： 1.20-1.54）.CONCLUSIONS： Low SMI is associated with the risk of FLI- defined NAFLD independent of other well-known metabolic risk factors in both genders. This association may differ ac- cording to age group or menopausal status. Further studies are warranted to confirm this relationship.

关键词： Korea National Health and Nutrition Examination Survey non-alcoholic fatty liver disease sarcopenia skeletal muscle

Measurement of stiffness and damping coefficient of rubber tractor tires using dynamic cleat test based on point contact model

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International Journal of Agricultural and Biological Engineering 2021年第1期14卷 157-164页

作者： Hogil Yoo Jooseon Oh Woo-Jin chung Hyun-Woo han Ji-Tae Kim Young-Jun Park Yoonna Park Department of Biosystems&Biomaterials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea Global Smart Farm Convergence Major College of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Republic of Korea Research Institute of Agriculture and Life Sciences College of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Republic of Korea Research and Development Institute Tongyang Moolsan Co.Ltd.Gongju 32530Republic of Korea

The ride vibration of a tractor is affected mostly by the stiffness and damping coefficient of the seat suspension,cabin suspension,cabin rubber mounts,and rubber ***,in the case of rubber tractor tires,the stiffnesses and damping coefficients have not been researched adequately thus far,and it is not simple to measure these *** this study,a method for measuring and analyzing the stiffnesses and damping coefficients of rubber tractor tires,which were the input parameters for the tractor ride vibration simulation,was *** cleat test,proposed in this study,did not require separate and complicated test equipment,unlike the conventional *** test was conducted simply by measuring acceleration under the driving conditions of the vehicle without detaching tires from the vehicle body or setting up additional test *** on the ground-vertical acceleration data obtained,the stiffness was calculated using the logarithmic decrement method,and the damping coefficient was calculated using least squares exponential curve *** result of the cleat test indicated that the front tires had stiffnesses of 486.08-570.69 kN/m and damping coefficients of 4.02-4.52 kN·s/m;the rear tires had stiffnesses of 409.42-483.79 kN/m and damping coefficients of 2.21-2.67 kN·s/*** the test,40 mm height cleats were installed on the track and the speed of the tractor was set to 7 and 10 km/h,which were the most common speeds during the *** study is meaningful in that it has presented a new method that improves the practicality of results,reduces cost,and simplifies the test process for measuring the stiffnesses and damping coefficients of rubber tractor tires.

关键词： ride vibration rubber tractor tire stiffness damping coefficient cleat test point contact model