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An Experiment on Power Properties in a Small-Scaled Wind Turbine Generator

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Journal of Power and Energy Engineering 2013年第7期1卷 6-13页

作者： Jee-Ho Kim hyun-dai yang Kyu-Jin Lee Sung-Do Song Sung-Hoon Park Joong-Ho Shin Department of Mechanical Design & Manufacturing Changwon National University Changwon 641-773 Korea.

This study configures a simple wind tunnel using a blower for generating wind energy, which is equivalent to natural wind, and a test system that measures properties of power. Also, the mechanical and electrical power in a small-scaled wind turbine are empirically measured to analyze the relationship between the mechanical and electrical power.

关键词： Small-Scaled Wind Turbine Vertical Axis Windmill Gearbox Mechanical Power Electrical Power

Kinematical system of breadth cam profile design

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Journal of Central South University 2011年第2期18卷 451-457页

作者： SHIN Joong-ho 李琳 yang hyun-dai KWON Soon-man Department of Mechanical Design & Manufacturing Changwon National University

The design solutions for breadth cam mechanism was presented. The main topics of the shape design for breadth cam was to calculate the coordinate at each contact point to determine the cam profile. The proposed method according to velocity and geometric relationships of instant velocity centers can easily determine each contact point at any instant moment. The cam profile was defined by contouring of the contact points. And also a program was developed by using Microsoft Visual C++ program,which can quickly and easily draw a 2D cam profile through the displacement diagram. Finally,the program was used to confirm the accuracy on the breadth cam profile design by computer animation graphically.

关键词： cam profile breadth cam reciprocating follower oscillating follower instant velocity center

Simultaneous enhancement in electrical conductivity and Seebeck coefficient by single-to double-valley transition in a Dirac-like band

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npj Computational Materials 2022年第1期8卷 2239-2246页

作者： Yu dai Wenjiang Zhou hyun-Jung Kim Qichen Song Xin Qian Te-Huan Liu Ronggui yang School of Energy and Power Engineering Huazhong University of Science and TechnologyWuhanHubei430074China Peter Grünberg Institut and Institute for Advanced Simulation Forschungszentrum Jülich and JARAD-52425JülichGermany Department of Chemistry and Chemical Biology Harvard UniversityCambridgeMA02138USA

SnTe possesses a single-to double-valley transition in the conduction band minimum when a compressive strain is *** a tight-binding analysis,it is shown that the variation of the band structure is attributed to the strain-induced delocalization of both the Sn-5s orbitals and Te-5p orbitals with different angular *** effect can largely increase the electron density of states near the band edge and thus keep the Fermi level of the compressed SnTe closer to it,where the electrons have lower scattering *** strain-induced double valleys lead to simultaneous increases in the electrical conductivity and the Seebeck coefficient and thereby nearly four times the enhancement of the power factor at the doping concentration of 5×10^(19) cm^(–3).This work suggests a feasible concept that can be employed to promote the power factor of a Dirac semiconductor via manipulating the valley degeneracy in the conduction band minimum.

关键词： conductivity double coefficient

Plasma Triggered Grain Coalescence for Self-Assembly of 3D Nanostructures

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Nano-Micro Letters 2017年第3期9卷 33-42页

作者： Chunhui dai Daeha Joung Jeong-hyun Cho Department of Electrical and Computer Engineering University of MinnesotaMN 55455USA

Grain coalescence has been applied in many areas of nanofabrication technology, including modification of thinfilm properties, nanowelding, and self-assembly of nanostructures. However, very few systematic studies of selfassembly using the grain coalescence, especially for threedimensional(3D) nanostructures, exist at present. Here, we investigate the mechanism of plasma triggered grain coalescence to achieve the precise control of nanoscale phase and morphology of the grain coalescence induced by exothermic energy. Exothermic energy is generated through etching a silicon substrate via application of plasma. By tuning the plasma power and the flow rates of reactive gases, different etching rates and profiles can be achieved, resulting in various morphologies of grain coalescence. Balancing the isotropic/anisotropic substrate etching profile and the etching rate makes it possible to simultaneously release 2D nanostructures from the substrate and induce enough surface tension force,generated by grain coalescence, to form 3D *** morphologies of 3D nanostructures have been obtained by the grain coalescence, and a strategy to achieve self-assembly, resulting in desired 3D nanostructures, has been proposed and demonstrated.

关键词： 3D nanostructures Grain coalescence Etching profile Self-assembly

A Low-Complexity Mobile Watermarking Scheme Resisting Scale Distortions

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Journal of Computer and Communications 2014年第4期2卷 77-81页

作者： dai-Kyung hyun Heung-Kyu Lee Department of Computer Science Korea Advanced Institute of Science and Technology Daejeon Korea

In mobile environment, a low-complexity is the significant feature because the mobile device has very limited resources due to power consumption. In this paper, we propose a low-complexity watermarking scheme for mobile device. We apply the minimum average correlation energy Mellin radial harmonic (MACE-MRH) correlation filter to watermark detection. By the scale tolerance property of MACE-MRH correlation filter, the proposed watermark detector can be robust to scaling attacks. Empirical evidence from a large database of test images indicates outperforming performance of the proposed method.

关键词： Low-Complexity Mobile Watermarking MACE-MRH Correlation Filter

Pretreated quercetin protects gerbil hippocampal CA1 pyramidal neurons from transient cerebral ischemic injury by increasing the expression of antioxidant enzymes

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Neural Regeneration Research 2017年第2期12卷 220-227页

作者： Bai Hui Chen Joon Ha Park Ji Hyeon Ahn Jeong Hwi Cho In Hye Kim Jae Chul Lee Moo-Ho Won Choong-hyun Lee In Koo Hwang Jong-dai Kim Il Jun Kang Jun Hwi Cho Bich Na Shin yang Hee Kim Yun Lyul Lee Seung Min Park Department of Histology and Embryology Institute of NeuroscienceWenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Biomedical Science and Research Institute for Bioscience and Biotechnology Hallym UniversityChuncheonSouth Korea Department of Neurobiology School of MedicineKangwon National UniversityChuncheonSouth Korea Department of Pharmacy College of PharmacyDankook UniversityCheonanSouth Korea Department of Anatomy and Cell Biology College of Veterinary Medicineand Research Institute for Veterinary ScienceSeoul National UniversitySeoulSouth Korea Division of Food Biotechnology School of BiotechnologyKangwon National UniversityChuncheonSouth Korea Department of Food Science and Nutrition Hallym UniversityChuncheonSouth Korea Department of Emergency Medicine School of MedicineKangwon National UniversityChuncheonSouth Korea Department of Physiology College of Medicineand Institute of Neurodegeneration and NeuroregenerationHallym UniversityChuncheonSouth Korea Department of Surgery School of MedicineKangwon National UniversityChuncheonSouth Korea Department of Emergency Medicine Sacred Heart HospitalCollege of MedicineHallym UniversityAnyangSouth Korea

Quercetin（QE; 3,5,7,3′,4′-pentahydroxyflavone）, a well-known flavonoid, has been shown to prevent against neurodegenerative disorders and ischemic insults. However, few studies are reported regarding the neuroprotective mechanisms of QE after ischemic insults. Therefore, in this study, we investigated the effects of QE on ischemic injury and the expression of antioxidant enzymes in the hippocampal CA1 region of gerbils subjected to 5 minutes of transient cerebral ischemia. QE was pre-treated once daily for 15 days before ischemia. Pretreatment with QE protected hippocampal CA1 pyramidal neurons from ischemic injury, which was confirmed by neuronal nuclear antigen immunohistochemistry and Fluoro-Jade B histofluorescence staining. In addition, pretreatment with QE significantly increased the expression levels of endogenous antioxidant enzymes Cu/Zn superoxide dismutase, Mn superoxide dismutase, catalase and glutathione peroxidase in the hippocampal CA1 pyramidal neurons of animals with ischemic injury. These findings demonstrate that pretreated QE displayed strong neuroprotective effects against transient cerebral ischemia by increasing the expression of antioxidant enzymes.

关键词： nerve regeneration flavonoids transient cerebral ischemia Cu/Zn superoxide dismutase catalase Mn superoxide dismutase glutathione peroxidase neural regeneration

Neuronal injury and tumor necrosis factor-alpha immunoreactivity in the rat hippocampus in the early period of asphyxia-induced cardiac arrest under normothermia

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Neural Regeneration Research 2017年第12期12卷 2007-2013页

作者： hyun-Jin Tae Il Jun Kang Tae-Kyeong Lee Jeong Hwi Cho Jae-Chul Lee Myoung Cheol Shin Yoon Sung Kim Jun Hwi Cho Jong-dai Kim Ji Hyeon Ahn Joon Ha Park In-Shik Kim Hyang-Ah Lee yang Hee Kim Moo-Ho Won Young Joo Lee Bio-Safety Research Institute College of Veterinary Medicine Chonbuk National University Iksan South Korea Department of Food Science and Nutrition Hallym University Chuncheon South Korea Department of Neurobiology School of Medicine Kangwon National University Chuncheon South Korea Department of Emergency Medicine School of Medicine Kangwon National University Chuncheon South Korea Department of Emergency Medicine Samcheok Medical Center Samcheok South Korea Division of Food Biotechnology School of Biotechnology Kangwon National University Chuncheon South Korea Department of Biomedical Science Research Institute of Bioscience and Biotechnology Hallym University Chuncheon South Korea Department of Obstetrics and Gynecology School of Medicine Kangwon National University Chuncheon South Korea Department of Surgery School of Medicine Kangwon National University Chuncheon South Korea Department of Emergency Medicine Seoul Hospital College of Medicine Sooncheonhyang University Seoul South Korea

Low survival rate occurs in patients who initially experience a spontaneous return of circulation after cardiac arrest（CA）. In this study, we induced asphyxial CA in adult male Sprague-Daley rats, maintained their body temperature at 37 ± 0.5°C, and then observed the survival rate during the post-resuscitation phase. We examined neuronal damage in the hippocampus using cresyl violet（CV） and Fluore-Jade B（F-J B） staining, and pro-inflammatory response using ionized calcium-binding adapter molecule 1（Iba-1）, glial fibrillary acidic protein（GFAP）, and tumor necrosis factor-alpha（TNF-α） immunohistochemistry in the hippocampus after asphyxial CA in rats under normothermia. Our results show that the survival rate decreased gradually post-CA（about 63% at 6 hours, 37% at 1 day, and 8% at 2 days post-CA）. Rats were sacrificed at these points in time post-CA, and no neuronal damage was found in the hippocampus until 1 day post-CA. However, some neurons in the stratum pyramidale of the CA region in the hippocampus were dead 2 days post-CA. Iba-1 immunoreactive microglia in the CA1 region did not change until 1 day postCA, and they were activated（enlarged cell bodies with short and thicken processes） in all layers 2 days postCA. Meanwhile, GFAP-immunoreactive astrocytes did not change significantly until 2 days post-CA. TNF-α immunoreactivity decreased significantly in neurons of the stratum pyramidale in the CA1 region 6 hours post-CA, decreased gradually until 1 day post-CA, and increased significantly again 2 days post-CA. These findings suggest that low survival rate of normothermic rats in the early period of asphyxia-induced CA is related to increased TNF-α immunoreactivity, but not to neuronal damage in the hippocampal CA1 region.

关键词： nerve regeneration post-cardiac arrest syndrome normothermia neuronal damage gliosis tumor necrosis factor-alpha neural regeneration

Neuroprotection of Chrysanthemum indicum Linne against cerebral ischemia/reperfusion injury by anti-inflammatory effect in gerbils

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Neural Regeneration Research 2016年第2期11卷 270-277页

作者： Ki-YeonYoo In Hye Kim Jeong-Hwi Cho li Hyeon Ahn Joon Ha Park Jae-Chul Lee hyun-Jin Tae Dae Won Kim Jong-dai Kim Seongkweon Hong Moo-Ho Won il Jun Kang Department of Oral Anatomy College of Dentistry and Research Institute of Oral Science Gangneung-Wonju National University GangneungRepublic of Korea Department of Neurobiology School of Medicine Kangwon National University Chuncheon Republic of Korea Department of Biomedical Science Research Institute of Bioscience and Biotechnology Hallym University Chuncheon Republic of Korea Department of Biochemistry and Molecular Biology College of Dentistry and Research Institute of Oral Science Gangneung-Wonju NationalUniversity Gangneung Republic of Korea Division of Food Biotechnology School of Biotechnology Kangwon National University Chuncheon Republic of Korea Department of Surgery School of Medicine Kangwon National University Chuncheon Republic of Korea Department of Food Science and Nutrition Hallym University Chuncheon Republic of Korea

In this study, we tried to verify the neuroprotective effect of Chrysanthemum indicum Linne（CIL） extract, which has been used as a botanical drug in East Asia, against ischemic damage and to explore the underlying mechanism involving the anti-inflammatory approach. A gerbil was given CIL extract for 7 consecutive days followed by bilateral carotid artery occlusion to make a cerebral ischemia/reperfusion model. Then, we found that CIL extracts protected pyramidal neurons in the hippocampal CA1 region（CA1） from ischemic damage using neuronal nucleus immunohistochemistry and Fluoro-Jade B histofluorescence. Accordingly, interleukin-13 immunoreactivities in the CA1 pyramidal neurons of CIL-pretreated animals were maintained or increased after cerebral ischemia/reperfusion. These findings indicate that the pre-treatment of CIL can attenuate neuronal damage/death in the brain after cerebral ischemia/reperfusion via an anti-inflammatory approach.

关键词： nerve regeneration transient cerebral ischemia delayed neuronal death pyramidal neurons inflammatory cytokines neural regeneration

Real-world Effectiveness and Tolerability of Interferonfree Direct-acting Antiviral for 15,849 Patients with Chronic Hepatitis C:A Multinational Cohort Study

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Journal of Clinical and Translational Hepatology 2024年第7期12卷 646-658页

作者： Fanpu Ji Sally Tran Eiichi Ogawa Chung-Feng Huang Takanori Suzuki Yu Jun Wong Hidenori Toyoda Dae Won Jun Liu Li Haruki Uojima Akito Nozaki Makoto Chuma Cheng-Hao Tseng Yao-Chun Hsu Masatoshi Ishigami Takashi Honda Masanori Atsukawa Hiroaki Haga Masaru Enomoto Huy Trinh Carmen Monica Preda Phillip Vutien Charles Landis Dong hyun Lee Tsunamasa Watanabe Hirokazu Takahashi Hiroshi Abe Akira Asai Yuichiro Eguchi Jie Li Xiaozhong Wang Jia Li Junping Liu Jing Liang Carla Pui-Mei Lam Rui Huang Qing Ye Hongying Pan Jiajie Zhang Dachuan Cai Qi Wang Daniel Q.Huang Grace Wong Vincent Wai-Sun Wong Junyi Li Son Do Norihiro Furusyo Makoto Nakamuta Hideyuki Nomura Eiji Kajiwara Eileen L.Yoon Sang Bong Ahn Koichi Azuma Kazufumi Dohmen Jihyun An Do Seon Song hyun Chin Cho Akira Kawano Toshimasa Koyanagi Aritsune Ooho Takeaki Satoh Kazuhiro Takahashi Ming-Lun Yeh Pei-Chien Tsai Satoshi Yasuda Yunyu Zhao Yishan Liu Tomomi Okubo Norio Itokawa Mi Jung Jun Toru Ishikawa Koichi Takaguchi Tomonori Senoh Mingyuan Zhang Changqing Zhao Raluca Ioana Alecu Wei Xuan Tay Pooja Devan Joanne Kimiko Liu Ritsuzo Kozuka Elena Vargas-Accarino Ai-Thien Do Mayumi Maeda Wan-Long Chuang Jee-Fu Huang Chia-Yen dai Ramsey Cheung Maria Buti Junqi Niu Wen Xie Hong Ren Seng Gee Lim Chao Wu Man-Fung Yuen Jia Shang Qiang Zhu Yoshiyuki Ueno Yasuhito Tanaka Jun Hayashi Ming-Lung Yu Mindie H.Nguyen Department of Infectious Diseases The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’anShaanxiChina Division of Gastroenterology and Hepatology Department of MedicineStanford University Medical CenterPalo AltoCAUSA Department of General Internal Medicine Kyushu University HospitalFukuokaJapan Hepatobiliary Division Department of Internal MedicineKaohsiung Medical University HospitalKaohsiung Hepatitis Research Center College of Medicine and Center for Liquid Biopsy and Cohort ResearchKaohsiung Medical UniversityKaohsiung Department of Gastroenterology and Metabolism Nagoya City University Graduate School of Medical SciencesNagoyaJapan Gastroenterology&Hepatology Changi General HospitalSinghealthSingapore Singhealth Duke-NUS Medicine Academic Clinical Program Singapore Department of Gastroenterology Ogaki Municipal HospitalOgakiJapan Department of Internal Medicine Hanyang UniversityCollege of MedicineSeoulKorea Hanyang Institute of Bioscience and Biotechnology Hanyang UniversitySeoulKorea Department of Hepatology The Third People's Hospital of Kunming CityKunmingYunnanChina Department of Gastroenterology Internal MedicineKitasato University School of MedicineSagamiharaJapan Gastroenterological Center Yokohama City University Medical CenterYokohamaJapan Division of Gastroenterology and Hepatology Department of Internal MedicineE-Da Cancer HospitalKaohsiung Department of Gastroenterology and Hepatology Nagoya University Graduate School of MedicineNagoyaJapan Division of Gastroenterology and Hepatology Nippon Medical SchoolTokyoJapan Department of Gastroenterology Yamagata University Faculty of MedicineYamagataJapan Department of Transfusion Medicine and Department of Hepatology Osaka Metropolitan University Graduate School of MedicineOsakaJapan San Jose Gastroenterology San JoseCAUSA Gastroenterology&Hepatology Department Clinic Fundeni InstituteBucharestRomania Division of Gastroenterology and Hepatology University of WashingtonSeattleWAUSA Department of

Background and Aims:As practice patterns and hepatitis C virus(HCV)genotypes(GT)vary geographically,a global real-world study from both East and West covering all GTs can help inform practice policy toward the 2030 HCV elimination *** study aimed to assess the effectiveness and tolerability of DAA treatment in routine clinical practice in a multinational cohort for patients infected with all HCV GTs,focusing on GT3 and ***:We analyzed the sustained virological response(SVR12)of 15,849 chronic hepatitis C patients from 39 Real-World Evidence from the Asia Liver Consortium for HCV clinical sites in Asia Pacific,North America,and Europe between 07/01/2014–07/01/***:The mean age was 62±13 years,with 49.6%*** demographic breakdown was 91.1%Asian(52.9%Japanese,25.7%Chinese/Taiwan residents,5.4%Korean,3.3%Malaysian,and 2.9%Vietnamese),6.4%White,1.3%Hispanic/Latino,and 1%Black/***,34.8%had cirrhosis,8.6%had hepatocellular carcinoma(HCC),and 24.9%were treatment-experienced(20.7%with interferon,4.3%with direct-acting antivirals).The largest group was GT1(10,246[64.6%]),followed by GT2(3,686[23.2%]),GT3(1,151[7.2%]),GT6(457[2.8%]),GT4(47[0.3%]),GT5(1[0.006%]),and untyped GTs(261[1.6%]).The overall SVR12 was 96.9%,with rates over 95%for GT1/2/3/6 but 91.5%for ***12 for GT3 was 95.1%overall,98.2%for GT3a,and 94.0%for ***12 was 98.3%overall for GT6,lower for patients with cirrhosis and treatment-experienced(TE)(93.8%)but≥97.5%for tretment-naive patients regardless of cirrhosis *** multivariable analysis,advanced age,prior treatment failure,cirrhosis,active HCC,and GT3/4 were independent predictors of lower SVR12,while being Asian was a significant predictor of achieving ***:In this diverse multinational realworld cohort of patients with various GTs,the overall cure rate was 96.9%,despite large numbers of patients with cirrhosis,HCC,TE,and GT3/***12 for GT3/6 with cirrhosis and TE was lower but st

关键词： Hepatitis C virus Liver cirrhosis Hepatocellular carcinoma Genotype DAA REAL-C