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Entomotaxonomia 2019年第2期41卷 89-95页

作者： Zhen LIU Shihong JIANG College of Agriculture South China Agricultural UniversityGuangzhouGuangdong 510642China School of Applied Chemistry and Biological Technology Postdoctoral Innovation Practice BaseShenzhenPolytechnicShenzhenGuangdong 518055China

Ohirathous emarginatus sp. nov. is described and illustrated from China. A key and a checklist of the known species in this genus, together with a distribution map of two Ohirathous species, are provided.

关键词： Elateroidea taxonomy key

A Scientometric Study of Digital Literacy,ICT Literacy,Information Literacy,and Media Literacy

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Journal of Data and Information Science 2021年第2期6卷 116-138页

作者： Hyejin park han Sung Kim han Woo park Educational Theory&Practice University at AlbanyState University of New York1400 Washington AvenueAlbanyNew York 12222USA Software Policy and Research Institute 22Daewangpangyo-ro 712beon-gilBundang-guSeongnam-siGyeonggi-do 13488Korea Media&Communication Interdisciplinary Program of Digital Convergence BusinessYeungnam University280 Daehak-RoGyeongsanGyeongsangbuk-do 38541Korea

Purpose:Digital literacy and related fields have received interests from scholars and practitioners for more than 20 years;nonetheless,academic communities need to systematically review how the fields have *** study aims to investigate the research trends of digital literacy and related concepts since the year of 2000,especially in ***/methodology/approach:The current study analyzes keywords,co-authorship,and cited publications in digital literacy through the scientometric *** journal articles have been retrieved from the WoS(Web of Science)using four keywords:"Digital literacy,""ICT literacy,""information literacy,"and"media literacy."Further,keywords,publications,and co-authorship are examined and further classified into clusters for more in-depth ***:Digital literacy is a multidisciplinary field that widely embraces literacy,ICT,the Internet,computer skill proficiency,science,nursing,health,and language *** participants,or study subjects,in digital literacy research range from primary students to professionals,and the co-authorship clusters are distinctive by countries in America and *** limitations:This paper analyzes one fixed chunk of a dataset obtained by searching for all four keywords at *** studies will retrieve the data from diverse disciplines and will trace the change of the leading research themes by time *** implications:To shed light on the findings,using customized digital literacy curriculums and technology is critical for learners at different ages to nurture digital literacy according to their learning *** need to cultivate their understanding of the social impact of exploiting technology and computational *** increase the originality of digital literacy-related studies,researchers from different countries and cultures may collaborate to investigate a broader range of digital literacy ***/value:The present study reviews

关键词： Digital literacy ICT literacy,Information literacy Media literacy Scientometrics

ΔN-Bcl-xL, a therapeutic target for neuroprotection

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Neural Regeneration Research 2017年第11期12卷 1791-1794页

作者： han-a park Elizabeth A.Jonas Department of Human Nutrition and Hospitality Management College of Human Environmental ScienceThe University of Alabama Department of Internal Medicine Section of EndocrinologyYale University

The B-cell lymphoma-extra large （Bcl-xL） is a mitochondrial anti-apoptotic protein that plays a role in neuroprotection. However, during excitotoxic stimulation, Bcl-xL undergoes caspase-dependent cleavage and produces a fragmented form, △N-Bcl-xL. Accumulation of △N-Bcl-xL is associated with mitochon- drial dysfunction and neuronal death. Therefore, strategies to inhibit the activity or formation of △N-Bcl- xL protect the brain against excitotoxic injuries. Our team found that the pharmacological inhibitor △BT- 737 exerts dose dependent effects in primary neurons. When primary hippocampal neurons were treated with 1 μM ABT-737, glutamate-mediated mitochondrial damage and neuronal death were exacerbated, whereas 10 nM △BT-737, a 100-fold lower concentration, protected mitochondrial function and enhanced neuronal viability against glutamate toxicity. In addition, we suggested acute vs. prolonged formation of △N-Bcl-xL may have different effects on mitochondrial or neuronal functions. Unlike acute production of △N-Bcl-xL by glutamate, overexpression of △N-Bcl-xL did not cause drastic changes in neuronal viability. We predicted that neurons undergo adaptation and may activate altered metabolism to compensate for △N-Bcl-xL-mediated mitochondrial dysfunction. Although the detailed mechanism of ABT-mediated neurotoxicity neuroprotection is still unclear, our study shows that the mitochondrial membrane protein △N-Bcl-xL is a central target for interventions.

关键词： B-cell lymphoma-extra large △N-Bcl-xL mitochondria ABT-737

Mitochondrial membrane protein Bcl-xL, a regulator of adult neuronal growth and synaptic plasticity: multiple functions beyond apoptosis

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Neural Regeneration Research 2014年第19期9卷 1706-1707页

作者： han-a park Elizabeth A.Jonas Department of Internal Medicine Section of EndocrinologyYale University

The B-cell lymphoma 2 （Bcl2） family of proteins participates in cell death or survival through a mitochondrial pathway. The pro-apoptotic members of the Bcl2 family such as Bim, Bid, Bax and Bak trigger cell death by contributing to the enhancement of mitochondrial outer membrane permeabil- ity to pro-apoptotic factors such as cytochrome c, with the subsequent activation of caspases. The anti-apoptotic mem- bers, such as B-cell lymphoma-extra large （Bd-xL）, block the pro-apoptotic Bcl2 members and prevent cell death. Bcl-xL is abundantly expressed during development and in mature neurons, suggesting that it plays a role in protection from death from untoward events occurring in adult life such as ischemia, inflammation or trauma. When these neurotoxic in- sults occur, Bcl-xL translocates to mitochondria and prevents activation and homo-oligomerization of pro-apoptotic family members such Bax and Bak. Numerous studies have shown pro-survival roles for Bcl-xL in adult neurons using various models; nevertheless, the role of Bcl-xL outside of the field of neuronal death, i.e., in adult neuronal growth, excitability or synaptic plasticity, has not been studied in depth.

关键词： Mitochondrial membrane protein Bcl-xL a regulator of adult neuronal growth and synaptic plasticity RNAi Bax

Oxidative stress battles neuronal Bcl-xL in a fight to the death

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Neural Regeneration Research 2021年第1期16卷 12-15页

作者： han-a park Katheryn Broman Elizabeth A.Jonas Department of Human Nutrition and Hospitality Management College of Human Environmental SciencesThe University of AlabamaTuscaloosaALUSA Department of Internal Medicine Section of EndocrinologyYale UniversityNew HavenCTUSA

Bcl-xL is a pro-survival protein of the Bcl2 family found in the mitochondrial ***-xL supports growth,development,and maturation of neurons,and it also prevents neuronal death during neurotoxic *** article reviews the mechanisms and upstream signaling that regulate the activity and abundance of *** team and others have reported that oxidative stress is a key regulator of intracellular Bcl-xL balance in *** stress regulates synthesis,degradation,and activity of Bcl-xL and therefore neuronal *** apoptosis,pro-apoptotic Bcl2 proteins such as Bax and Bak translocate to and oligomerize in the mitochondrial *** of oligomers causes release of cytochrome c and activation of caspases that lead to neuronal ***-xL binds directly to pro-apoptotic Bcl2 proteins to block apoptotic *** anti-apoptotic roles of Bcl-xL have been well documented,an increasing number of studies in recent decades show that protein binding partners of Bcl-xL are not limited to Bcl2 ***-xL forms a complex with F1Fo ATP synthase,DJ-1,DRP1,IP3R,and the ryanodine *** proteins support physiological processes in neurons such as growth and development and prevent neuronal damage by regulating mitochondrial ATP production,synapse formation,synaptic vesicle recycling,neurotransmission,and calcium ***,under conditions of oxidative stress,Bcl-xL undergoes proteolytic cleavage thus lowering the abundance of functional Bcl-xL in ***,oxidative stress alters formation of Bcl-xL-mediated multiprotein complexes by regulating post-translational ***,oxidative stress regulates transcription factors that target the Bcl-x gene and alter accessibility of microRNA to mRNA influencing mRNA levels of *** this review,we discussed how Bcl-xL supports the normal physiology of neurons,and how oxidative stress contributes to pathology by manipulating the dynamics of Bcl

关键词： ATP Bcl-xL F1Fo ATP synthase mitochondria neuroprotection oxidative stress

Fabrication and Mechanical Properties of Sm2O3 Doped CeO2 Reinforced Ti3AlC2 Nano Composite

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Journal of Rare Earths 2004年第Z2期22卷 85-88页

作者： Jae Ho han Sang Whan park Young Do Kim Division of Materials Science & Engineering Hanyang UniversitySeoul133-791Korea Korea Institute of Science and TechnologyMulti-Functional Ceramics Research CenterSeoul136-791Korea Division of Materials Science & EngineeringHanyang UniversitySeoul133-791Korea

The fabrication process of Sm2O3 doped CeO2 reinforced Ti3AlC2 nano composites including the nano particle dispersion process by a hetero-coagulation process was developed using in-situ synthesis and densification process of Ti3AlC2. The effects of Sm2O2 doped CeO2 nano particles on mechanical properties of Ti3AlC2 were investigated. It was found that the presence of 20SDC nano particles in Ti3AlC2 was very effective to improve the mechanical properties of Ti3AlC2 without spoiling the unique characteristics of Ti3AlC2temary carbide.

关键词： nano ceramic composite Ti3AlC2 CeO2 fabrication rare earths

Effects of Liuwei Dihuang Decoction(Yukmijihwang-tang)on Physical Fatigue by Regulating Neurotransmitters in Brain

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Chinese Journal of Integrative Medicine 2020年第11期26卷 839-844页

作者： Ji-Ye Kee Seung-Heon Hong Jin-han park department of oriental pharmacy college of pharmacywonkwang-oriental medicines research institutewonkwang universityjeonbuk(54538)republic of korea division of bio-tech no logy and con verge nee daegu hanny un iversitygyeongbuk(8578)republic of korea

Objective:To study the effect of Liuwei Dihuang Decoction(六味地黄汤)or Yukmijihwangtang(YJT)on endurance exercise by in vivo ***:ICR mice were randomly divided into the control group(distilled water)and the YJT groups(1,10,100 mg/kg),5 animals per *** and distilled water were orally *** anti-fatigue effect of YJT was evaluated by open fifiled test(OFT),forced swimming test(FST),and tail suspension test(TST).Results:In the OFT,YJT signifificantly increased the total movement distance in a dose-dependent ***,treatment with YJT signifificantly decreased immobility time in the FST and the *** neurotransmitters such as norepinephrine(NE),serotonin(5-HT),dopamine(DA)levels were increased by *** of YJT down-regulated the expression levels of NE,5-HT,5-hydroxyindole-acetic acid(5-HIAA),and DA in the brain stem and hypothalamus of ***,protein expression of HSP70 in mice liver and heart muscles was signifificantly increased in the YJT ***:YJT could ameliorate fatigue and enhance exercise tolerance through suppressing of brain monoamines including NE,5-HT,5-HIAA,and DA in FST mice model.

关键词： Yukmijihwang-tang Liuwei Dihuang Decoction fatigue forced swimming test HSP70 neurotransmitter Chinese medicine

Fingerprint inspired advanced end-effector and its applications

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Friction 2022年第10期10卷 1739-1750页

作者： Sung Ho LEE Hyo Sung KIM han Jun park Moon Kyu KWAK Department of Electrical Engineering and Computer Science University of MichiganAnn Arbor 48109USA Department of Mechanical Engineering Kyungpook National UniversityDaegu 41566Republic of Korea

The human fingertip consists of a fingerprint with many micro-grating *** main roles of the fingerprint could be divided into two purposes,namely,the enhancement of the frictional force and the effective transmittance of the *** this study,we present the fingerprint-inspired end-effector that has not only admirable frictional force but also electric *** end-effector is composed of fluorocarbon rubber,one of the famous materials to achieve high frictional force and *** various experiments,the novel performance of micro structured fluorocarbon rubber end-effector(MSFE)is characterized by comparing with a macroscale patterned sample(MPS),which has been already used in real industrial *** results are analyzed ***,as feasible applications,we suggest two applications based on the role of the *** is the conductive astronaut glove with high frictional force,and the other one is a non-slip pad for the next-generation glass transfer *** these experiments,we successfully observe the enhanced system performance and confirm the possibility of using the MSFE as feasible *** believe that the MSFE could be a useful and powerful alternative as an end-effector,not only in the aerospace industry but also in display manufacturing processes.

关键词： fingerprint end-effector fluorocarbon rubber(FKM) glass transfer system spacesuit

A nanofilter composed of carbon nanotube-silver composites for virus removal and antibacterial activity improvement

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Journal of Environmental Sciences 2016年第4期28卷 275-283页

作者： Jun Pyo Kim Jae Ha Kim Jieun Kim Soo No Lee han-Oh park Nano Development Team Bioneer Corporation Daejeon 306-220 Republic of Korea

We have developed a new nanofilter using a carbon nanotube-silver composite material that is capable of efficiently removing waterborne viruses and *** nanofilter was subjected to plasma surface treatment to enhance its flow rate,which was improved by approximately 62%.Nanoscale pores were obtained by fabricating a carbon nanotube network and using nanoparticle fixation technology for the removal of *** pore size of the nanofilter was approximately 38 nm and the measured flow rate ranged from 21.0 to 97.2 L/（min·m^2）under a pressure of 1–6 kgf/cm^2 when the amount of loaded carbon nanotube-silver composite was 1.0 mg/cm^*** nanofilter was tested against Polio-,Noro-,and Coxsackie viruses using a sensitive real-time polymerase chain reaction assay to detect the presence of viral particles within the *** trace of viruses was found to flow through the nanofilter with carbon nanotube-silver composite loaded above 0.8 mg/cm^***,the surface of the filter has antibacterial properties to prevent bacterial clogging due to the presence of 20-nm silver nanoparticles,which were synthesized on the carbon nanotube surface.

关键词： Carbon nanotube Silver nanoparticle Virus removal Nanofilter Water purification

Autopilot Control Synthesis for Path Tracking Maneuvers of Underwater Vehicles

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China Ocean Engineering 2011年第2期25卷 237-249页

作者： Sam-Sang YOU Hyeung-Sik CHOI Hwan-Seong KIM han-Il park School of Mechanical and Energy Systems Engineering Korea Maritime University Department of Logistics System Engineering Korea Maritime University Department of Ocean Engineering Korea Maritime University

This paper is concerned with the robust control synthesis of autonomous underwater vehicle （AUV） for general path following maneuvers. First, we present maneuvering kinematics and vehicle dynamics in a unified framework. Based on H∞ loop-shaping procedure, the 2-DOF autopilot controller has been presented to enhance stability and path tracking. By use of model reduction, the high-order control system is reduced to one with reasonable order, and further the scaled low-order controller has been analyzed in both the frequency and the time domains. Finally, it is shown that the autopilot control system provides robust performance and stability against prescribed levels of uncertainty.

关键词： underwater vehicle path following 2-DOF control synthesis H∞ loop-shaping plant uncertainty model reduction