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Schottky barrier modulation of bottom contact SnO_(2) thin-film transistors via chloride-based combustion synthesis

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Journal of Materials Science & Technology 2023年第17期148卷 199-208页

作者： Bongho jang Junhee Lee Hongki Kang Jaewon jang Hyuk-Jun Kwon Department of Electrical Engineering and Computer Science DGISTDaegu 42988South Korea School of Electronic and Electrical Engineering Kyungpook National UniversityDaegu 41566South Korea School of Electronics Engineering Kyungpook National UniversityDaegu 41566South Korea Convergence Research Advanced Centre for Olfaction DGISTDaegu 42988South Korea

The enhanced carrier flow at the interface between Au and SnO_(2)semiconductors,which initially form Schottky contacts,is realized using chloride-based combustion ***-based combustion sys-tems can achieve chlorine(Cl)doping effects as well as conversion to crystalline SnO_(2)films at clearly lower temperatures(∼250℃)than conventional *** to the Cl doping effect,the high carrier concentration can induce thin potential barriers at the metal/semiconductor(MS)junctions,resulting in carrier injection by *** a result,compared to conventional SnO_(2)thin-film transistors,the de-vices fabricated by combustion synthesis exhibit significantly improved electrical performance with field-effect mobility of 6.52 cm 2/Vs(∼13 times),subthreshold swing of 0.74 V/dec,and on/offratio of∼10^(7)below 300℃.Furthermore,because of the enhanced tunneling carriers induced by the narrowed barrier width,the Schottky barriers are significantly reduced from 0.83 to 0.29 eV(65%decrease)at 250℃and from 0.42 to 0.17 eV(60%decrease)at 400℃.Therefore,chloride-based combustion synthesis can con-tribute to developing SnO_(2)-based electronics and flexible devices by achieving both high-quality oxide films and improved current flow at the MS interface with low-temperature annealing.

关键词： SnO_(2) Combustion Sol-gel Schottky contact Thin-film transistors

An insert in the Hpy region of hscp in Hefiothis virescens （Lepidoptera： Noctuidae） reveals a possible CORE-SINE of insects

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Insect Science 2009年第3期16卷 219-226页

作者： Sujin Park Thomas M. Brown Sam-Kyu Kim Chunkeun Lim jang Hyun Hur yong Chul Park Saeyoull Cho Life Science Institute University of Michigan Ann Arbor M148109 USA Genectar Corn LLC 539 Kafispell Ave. Whitefish MT 59937-2743 USA Division of Biological Environment College of Agriculture and Life Science Kangwon National University Chuncheon 200-701Korea Department of Appfied Biology Division of Bio-resource of Technology College of Agriculture and Life Science Kangwon National University Chuncheon 200-701 Korea Department of Plant Biotechnology Program Division of Biotechnology School of BiotechnologyInstitute of Bioscience and Biotechnology Kangwon National University Chuncheon 200-701 Korea

A new putative transposon was identified in the tobacco budworm, Helio- this virescens. This transposon was characterized as a full length CORE-SINE （65 bp of ＂CORE＂ core specific nucleotide short interspersed elements） that resembled sequences from three other lepidopterans and humans. In particular, the A-box and B-box regions of this sequence most closely conformed to the signature of CORE-SINEs from widely divergent species. This CORE-SINE was present as a polymorphism in a hypervariable region of the gene hscp, which is the target of pyrethroid insecticides and other xenobiotics in the nerve axon. We described this new putative transposon as Noct-1 due to its presence in a noctuid moth. This is the first description of a full-length CORE-SINE with the A-box, B-box, target site duplication, and candidate core domain from an insect.

关键词： A-box B-box CORE-SINE Heliothis virescens Noct-1 target site duplication

锌诱导对香菇菌丝生长速度及金属硫蛋白含量的影响

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中国无机分析化学 2024年第1期14卷 18-25页

作者：姜海云孙振英刘贵巧邯郸市食品药品检验中心河北邯郸056002 河北工程大学生命科学与食品工程学院河北邯郸056038

金属硫蛋白(Metallothionein)对镉、铜和锌等多种元素有高度亲和性,具有重金属解毒的功能。选取食用菌中的香菇(Mushrooms)作为代表菌种,在固体培养基中添加了不同浓度梯度的元素锌盐溶液,每天测定不同锌浓度作用下香菇的生长速度;培养... 详细信息

金属硫蛋白(Metallothionein)对镉、铜和锌等多种元素有高度亲和性,具有重金属解毒的功能。选取食用菌中的香菇(Mushrooms)作为代表菌种,在固体培养基中添加了不同浓度梯度的元素锌盐溶液,每天测定不同锌浓度作用下香菇的生长速度;培养结束,测定菌丝体内锌含量和金属硫蛋白含量。结果表明,培养环境中锌浓度越高,菌丝体内富锌量越多。通过一系列元素吸附和金属硫蛋白含量相关性分析,发现元素锌含量与香菇中金属硫蛋白含量呈正相关性,锌含量越高,金属硫蛋白含量也越高。实验结果为香菇及其他食用菌富集元素锌机理提供参考,还为食用菌安全问题的解决提供一定参考依据。

关键词：香菇菌丝金属锌吸附金属硫蛋白

Pain Efficacy of a Home-Based Low-Intensity Continuous Ultrasound Stimulator for Knee Arthritis: A Single-Arm, Open-Label, Prospective Clinical Trial

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Health 2024年第7期16卷 703-716页

作者： Md. Habibur Rahman Yeon-Gyu jang Johny Bajgai Subham Sharma Kchorng Vira Abdul-Nasir Sofian Seong Hoon Goh Yundeok Kim Cheol-Su Kim Doo-Sup Kim Kyu-Jae Lee Department of Convergence Medicine Wonju College of Medicine Yonsei University Wonju Republic of Korea Department of Neurosurgery Wonju Severance Christian Hospital Wonju College of Medicine Yonsei University Wonju Republic of Korea Department of Global Medical Science Wonju College of Medicine Yonsei University Wonju Republic of Korea Department of Internal Medicine Division of Hematology-Oncology Wonju Severance Christian Hospital Wonju Republic of Korea Department of Orthopaedic Surgery Wonju College of Medicine Yonsei University Wonju Republic of Korea

1) Background: Osteoarthritis (OA) is defined as a degenerative joint disease that mainly affects the bone. This study aims to evaluate the effect of low-intensity continuous ultrasound (LICUS) treatment on the knee of osteoarthritis patients through home-based intervention using the LICUS medical device. 2) Methods: The clinical trials were designed in a single-arm, open-label, and intervention study. Thirty-five participants, including those who dropped out (12%), were screened and enrolled. The patients received LICUS (1.1 MHz, 1.5 W/cm2, collimated beams) on the knee by the instructions of the investigator at home (5 min/session, 3 times/day, for four-weeks). Outcome measures were assessed using the Visual Analog Scale (VAS) as a primary endpoint and the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) as a secondary endpoint to evaluate pain relief and functional recovery of the knee between pre-treatment (baseline) and post-treatment (four-weeks). 3) Results: Knee pain scores measured using the VAS and WOMAC indices were significantly reduced after a four-week treatment with LICUS compared to baseline. Knee stiffness and functional capacity were significantly reduced after the LICUS application. In addition, there were no reports of adverse effects during the study period. 4) Conclusion: Long-term and home-based application of LICUS can be recommended as an alternative option for the treatment of OA patients, as evidenced by the effect of pain relief and knee function recovery.

关键词： Knee Osteoarthritis Low-Intensity Continuous Ultrasound Stimulator Clinical Trial Visual Analogue Scale Western Ontario and McMaster Universities Osteoarthritis Index

Graphene and MXene-based porous structures for multifunctional electromagnetic interference shielding

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Nano Research 2023年第1期16卷 1387-1413页

作者： Xi Shen jang-Kyo Kim Department of Aeronautical and Aviation Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 999077China School of Mechanical and Manufacturing Engineering University of New South WalesSydneyNSW 2052Australia The Research Institute for Sports Science and Technology The Hong Kong Polytechnic UniversityHung HomHong Kong 999077China

Electrically conductive porous structures are ideal candidates for lightweight and absorption-dominant electromagnetic interference(EMI)*** this review,we summarize the recent progress in developing porous composites and structures from emerging two-dimensional(2D)graphene and MXene nanosheets for EMI shielding *** properties contributing to various energy loss mechanisms are probed with a critical discussion on their correlations with EMI shielding *** approaches to constructing bulk porous structures,such as 2D porous films,three-dimensional(3D)aerogels and foams,and hydrogels,are compared to highlight important material and processing parameters required to achieve optimal microstructures.A comprehensive comparison of EMI shielding performance is also carried out to elucidate the effects of different assembly techniques and *** multifunctional applications in adaptive EMI shielding,mechanical force attenuation,thermal management,and wearable devices are introduced,underlining the importance of unique compositions and microstructures of porous *** process–structure–property relationships established in this review would offer valuable guidance and insights into the design of lightweight EMI shielding materials.

关键词： porous composite graphene MXene electrical conductivity electromagnetic interference(EMI)shielding

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天津艺术文化与中外审美融合的服装设计应用

针织工业 2024年第4期 71-74页

作者：许君田萌蒋蕾姜亚明天津工业大学纺织科学与工程学院天津300387 天津工业大学中华优秀传统文化与技艺国际传承创新基地天津300387 天津工业大学国际教育学院天津300387

为深入理解天津艺术文化元素在服装设计上的再创新及其创新设计表达方式,文章采用问卷调查方法,收集来自不同文化背景的人群对艺术文化创新形式、服装款式、色彩搭配和图案运用的看法和偏好。将不同文化背景的人群对时尚的感受转化为服... 详细信息

为深入理解天津艺术文化元素在服装设计上的再创新及其创新设计表达方式,文章采用问卷调查方法,收集来自不同文化背景的人群对艺术文化创新形式、服装款式、色彩搭配和图案运用的看法和偏好。将不同文化背景的人群对时尚的感受转化为服装设计的具体指标,并将其与天津艺术文化元素相结合,旨在通过服装设计探索文化交流的新方式。该研究不仅挖掘了富有文化底蕴的服装设计表达方法,也为将天津艺术文化的精髓融入现代时尚服装设计提供了实践案例和发展路径。

关键词：天津艺术文化问卷调查艺术元素提取服装设计

Enhancing ammonia production rates from electrochemical nitrogen reduction by engineering three-phase boundary with phosphorus-activated Cu catalysts

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Journal of Energy Chemistry 2023年第9期84卷 394-401页

作者： Jeehye Kim Cho Hee Lee yong Hyun Moon Min Hee Lee Eun Hyup Kim Sun Hee Choi Youn Jeong jang Jae Sung Lee School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea Department of Chemical Engineering Hanyang UniversitySeoul 04763Republic of Korea Pohang Accelerator Laboratory(PAL) Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea

Electrochemical N_(2) reduction reaction(eNRR) over Cu-based catalysts suffers from an intrinsically low activity of Cu for activation of stable N_(2) molecules and the limited supply of N_(2) to the catalyst due to its low solubility in aqueous ***,we propose phosphorus-activated Cu electrocatalysts to generate electron-deficient Cu sites on the catalyst surface to promote the adsorption of N_(2) *** eNRR system is further modified using a gas diffusion electrode(GDE) coated with polytetrafluoroethylene(PTFE) to form an effective three-phase boundary of liquid water-gas N_(2)-solid catalyst to facilitate easy access of N_(2) to the catalytic *** a result,the new catalyst in the flow-type cell records a Faradaic efficiency of 13.15% and an NH_(3) production rate of 7.69 μg h^(-1) cm^(-2) at-0.2 V_(RHE),which represent 3.56 and 59.2 times increases from those obtained with a pristine Cu electrode in a typical electrolytic *** work represents a successful demonstration of dual modification strategies;catalyst modification and N_(2) supplying system engineering,and the results would provide a useful platform for further developments of electrocatalysts and reaction systems.

关键词： Electrochemical nitrogen reduction reaction Ammonia production Phosphorous modified copper electrodes Gas diffusion electrodes Three-phase boundary PTFE coating

Segmented tomographic evaluation of structural degradation of carbon support in proton exchange membrane fuel cells

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Journal of Energy Chemistry 2022年第11期31卷 359-367,I0010页

作者： Jung A.Hong Min-Hyoung Jung Sung yong Cho Eun-Byeol Park Daehee Yang Young-Hoon Kim Sang-Hyeok Yang Woo-Sung jang Jae Hyuck jang Hyo June Lee Sungchul Lee Hu Young Jeong Young-Min Kim Department of Energy Science Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Fuel Cell Core Parts Development Cell Hyundai Mobis Co.Ltd.Uiwang 16082Republic of Korea Electron Microscopy&Spectroscopy Team Korea Basic Science Institute(KBSI)Daejeon 34133Republic of Korea Graduate School of Semiconductor Materials and Devices Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea

The variation of the three-dimensional(3D)structure of the membrane electrode of a fuel cell during proton exchange cycling involves the corrosion/compaction of the carbon *** increasing degradation of the carbon structure continuously reduces the electrocatalytic performance of proton exchange membrane fuel cells(PEM-FCs).This phenomenon can be explained by performing 3D tomographic analysis at the ***,conventional tomographic approaches which present limited experimental feasibility,cannot perform such evaluation and have not provided sufficient structural information with statistical significance thus ***,a reliable methodology is required for the 3D geometrical evaluation of the carbon ***,we propose a segmented tomographic approach which employs pore network analysis that enables the visualization of the geometrical parameters corresponding to the porous carbon structure at a high *** approach can be utilized to evaluate the 3D structural degradation of the porous carbon structure after cycling in terms of local surface area,pore size distribution,and their 3D *** geometrical parameters of the carbon body were demonstrated to be substantially reduced owing to the cycling-induced *** information enables a deeper understanding of the degradation phenomenon of carbon supports and can contribute to the development of stable PEM-FC electrodes.

关键词： Electron tomography Fuel cell Proton exchange membrane Membrane electrode assembly Carbon corrosion

Recovery mechanisms of somatosensory function in stroke patients: implications of brain imaging studies

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Neuroscience Bulletin 2013年第3期29卷 366-372页

作者： Sung Ho jang Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University

Somatosensory dysfunction is associated with a high incidence of functional impairment and safety in patients with stroke. With developments in brain mapping techniques, many studies have addressed the recovery of various functions in such patients. However, relatively little is known about the mechanisms of recovery of somatosensory function. Based on the previous human studies, a review of 11 relevant studies on the mecha- nisms underlying the recovery of somatosensory function in stroke patients was conducted based on the fol- lowing topics：（1） recovery of an injured somatosensory pathway, （2） peri-lesional reorganization, （3） contribu- tion of the unaffected somatosensory cortex, （4） contribution of the secondary somatosensory cortex, and （5） mechanisms of recovery in patients with thalamic lesions. We believe that further studies in this field using combinations of diffusion tensor imaging, functional neuroimaging, and magnetoencephalography are needed. In addition, the clinical significance, critical period, and facilitatory strategies for each recovery mechanism should be clarified.

关键词： stroke somatosensory recovery brain mapping brain plasticity