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Stretchable and colorless freestanding microwire arrays for transparent solar cells with flexibility

Light(Science & Applications) 2019年第1期8卷 47-59页

作者： Sung Bum Kang Ji-Hwan kim Myeong Hoon Jeong Amit Sanger Chan Ul kim chil-min kim Kyoung Jin Choi Department of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea Department of Emerging Materials Science Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea

Transparent solar cells(TSCs)are emerging devices that combine the advantages of visible transparency and light-toelectricity ***,existing TSCs are based predominantly on organics,dyes,and perovskites;however,the rigidity and color-tinted transparent nature of those devices strongly limit the utility of the resulting TSCs for realworld ***,we demonstrate a flexible,color-neutral,and high-efficiency TSC based on a freestanding form of n-silicon microwires(SiMWs).Flat-tip SiMWs with controllable spacing are fabricated via deep-reactive ion etching and embedded in a freestanding transparent polymer *** light transmittance can be tuned from ~10 to 55% by adjusting the spacing between the *** TSCs,a heterojunction is formed with a p-type polymer in the top portion of the n-type flat-tip *** contact with an indium-doped ZnO film occurs at the bottom,and the side surface has an Al2O3 passivation ***,slanted-tip SiMWs are developed by a novel solventassisted wet etching method to manipulate light ***-difference time-domain simulation revealed that the reflected light from slanted-tip SiMWs helps light-matter interactions in adjacent *** TSC based on the slanted-tip SiMWs demonstrates 8%efficiency at a visible transparency of 10% with *** efficiency is the highest among Si-based TSCs and comparable with that of state-of-the-art neutral-color TSCs based on organic–inorganic hybrid perovskite and ***,unlike others,the stretchable and transparent platform in this study is promising for future TSCs.

关键词： transparent transparency spacing

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Impact of non-Hermitian mode interaction on inter-cavity light transfer

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Photonics Research 2022年第5期10卷 1232-1237页

作者： HYEON-HYE YU SUNJAE GWAK JINHYEOK RYU HYUNDONG kim JI-HWAN kim JUNG WAN RYU chil-min kim CHANG HWAN YI Department of Emerging Materials Science DGISTDaegu 42988Republic of Korea Center for Theoretical Physics of Complex Systems Institute for Basic Science(IBS)Daejeon 34126Republic of Korea

Understanding inter-site mutual mode interaction in coupled physical systems is essential to comprehend large compound systems,as this local interaction determines the successive multiple inter-site energy transfer *** the present study,we demonstrate that only the non-Hermitian coupling can correctly account for the light transfer between two coupled optical *** also reveal that the non-Hermitian coupling effect becomes crucial as the system dimension *** results provide important insight for handling general-coupled devices in the subwavelength regime.

关键词： interaction transfer coupling

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Hybridization of different types of exceptional points

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Photonics Research 2019年第12期7卷 1473-1478页

作者： JINHYEOK RYU SUNJAE GWAK JAEWON kim HYEON-HYE YU JI-HWAN kim JI-WON LEE CHANG-HWAN YI chil-min kim Department of Emerging Materials Science DGISTDaegu 42988South Korea Institut fur Physik Technische Universitat IlmenauD-98693 IlmenauGermany Samsung Electro-Mechanics Suwon 16674South Korea

A large number of different types of second-order non-Hermitian degeneracies called exceptional points(EPs)were found in various physical systems depending on the mechanism of coupling between *** show that these EPs can be hybridized to form higher-order EPs,which preserve the original properties of the initial EPs before *** a demonstration,we hybridize chiral and supermode second-order EPs,where the former and the latter are the results of intra-disk and inter-disk mode coupling in an optical system comprised of two Mie-scale microdisks and one Rayleigh-scale *** high sensitivity of the resulting third-order EP against external perturbations in our feasible system is emphasized.

关键词： exceptional coupling system

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Role of glutathione transferase in phase separation of FUS and TAF15 in neurons

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Neural Regeneration Research 2025年第7期20卷 1999-2000页

作者： Kiyoung kim Department of Medical Science Soonchunhyang UniversityAsanKorea

Amyotrophic lateral sclerosis(ALS)is a progressive neurodegenerative disorder characterized by the degeneration of motor neurons in the brain and spinal cord,leading to muscle weakness,paralysis,and ultimately death(Cleveland and Rothstein,2001).Frontotemporal lobar degeneration(FTLD)is a neurodegenerative disease affecting the frontal and temporal lobes of the brain,leading to changes in behavior,personality,and language(Van Langenhove et al.,2012).Both ALS and FTLD are classified as proteinopathies in which abnormal protein aggregation and accumulation in neurons contribute to the disease *** in sarcoma(FUS)is a DNA/RNA-binding protein involved in various cellular processes,including transcriptional regulation,RNA splicing,and DNA *** in the FUS gene have been linked to familial ALS,highlighting the importance of FUS in the disease pathogenesis(Vance et al.,2009).In ALS and FTLD,aberrant post-translational modifications(PTMs)of FUS,such as phosphorylation,acetylation,and methylation,have been implicated in the promotion of FUS aggregation and neurotoxicity(Choi et al.,2023).Therefore,understanding the regulatory mechanisms of FUS PTMs is crucial for developing targeted therapies against these diseases.

关键词： degeneration FUS aggregation

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Carboplatin restores neuronal toxicity in FUS-linked amyotrophic lateral sclerosis

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Neural Regeneration Research 2025年第8期20卷 2319-2320页

作者： Kiyoung kim Department of Medical Science Soonchunhyang UniversityAsanKorea

Amyotrophic lateral sclerosis(ALS),also known as Lou Geh rig's disease,is a progressive neurodegenerative disorder that affects motor neurons in the brain and spinal *** leads to muscle weakness,paralysis,and ultimate... 详细信息

关键词： paralysis sclerosis respiratory

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Recovery of the injured neural system through gene delivery to surviving neurons in Parkinson’s disease

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Neural Regeneration Research 2025年第10期20卷 2855-2861页

作者： Chanchal Sharma Sehwan kim Hyemi Eo Sang Ryong kim School of Life Science Kyungpook National UniversityDaeguKorea BK21 FOUR KNU Creative BioResearch Group Kyungpook National University DaeguKorea Brain Science and Engineering Institute Kyungpook National UniversityDaeguKorea

A critical unaddressed problem in Parkinson’s disease is the lack of therapy that slows or hampers *** medications effectively manage symptoms,they offer no long-term benefit because they fail to address the underlying neuronal *** highlights that the elusive goals of halting progression and restoring damaged neurons limit the long-term impact of current *** clinical trials using gene therapy have demonstrated the safety of various vector delivery systems,dosages,and transgenes expressed in the central nervous system,signifying tangible and substantial progress in applying gene therapy as a promising Parkinson’s disease ***,at diagnosis,many dopamine neurons remain in the substantia nigra,offering a potential window for recovery and *** propose that modulating these surviving dopamine neurons and axons in the substantia nigra and striatum using gene therapy offers a potentially more impactful therapeutic approach for future ***,innovative gene therapies that focus on preserving the remaining elements may have significant potential for enhancing long-term outcomes and the quality of life for patients with Parkinson’s *** this review,we provide a perspective on how gene therapy can protect vulnerable elements in the substantia nigra and striatum,offering a novel approach to addressing Parkinson’s disease at its core.

关键词： adeno-associated virus gene therapy neuroprotection neurorestoration neurotrophic factor nigrostriatal dopamine pathway pro-survival protein

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High mobility group box 1 in the central nervous system:regeneration hidden beneath inflammation

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Neural Regeneration Research 2025年第1期20卷 107-115页

作者： Hanki kim Bum Jun kim Seungyon Koh Hyo Jin Cho Xuelian Jin Byung Gon kim Jun Young Choi Department of Brain Science Ajou University School of MedicineSuwonSouth Korea Department of Biomedical Sciences Ajou University Graduate School of MedicineSuwonSouth Korea Department of Neurology Ajou University School of MedicineSuwonSouth Korea Department of Geriatrics The Affiliated Suqian First People’s Hospital of Nanjing Medical UniversitySuqianJiangsu ProvinceChina

High-mobility group box 1 was first discovered in the calf thymus as a DNA-binding nuclear protein and has been widely studied in diverse fields,including neurology and ***-mobility group box 1 in the extracellular space functions as a pro-inflammatory damage-associated molecular pattern,which has been proven to play an important role in a wide variety of central nervous system disorders such as ischemic stroke,Alzheimer’s disease,frontotemporal dementia,Parkinson’s disease,multiple sclerosis,epilepsy,and traumatic brain *** drugs that inhibit high-mobility group box 1 as a damage-associated molecular pattern,such as glycyrrhizin,ethyl pyruvate,and neutralizing anti-high-mobility group box 1 antibodies,are commonly used to target high-mobility group box 1 activity in central nervous system *** it is commonly known for its detrimental inflammatory effect,high-mobility group box 1 has also been shown to have beneficial pro-regenerative roles in central nervous system *** this narrative review,we provide a brief summary of the history of high-mobility group box 1 research and its characterization as a damage-associated molecular pattern,its downstream receptors,and intracellular signaling pathways,how high-mobility group box 1 exerts the repair-favoring roles in general and in the central nervous system,and clues on how to differentiate the pro-regenerative from the pro-inflammatory *** targeting high-mobility group box 1 in the central nervous system may benefit from differentiating between the two functions rather than overall suppression of high-mobility group box 1.

关键词： central nervous system damage-associated molecular pattern ethyl pyruvate glycyrhizzin high mobility group box 1 inflammation neural stem cells neurodevelopment oligodendrocyte progenitor cells redox status regeneration

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A New Encryption Mechanism Supporting the Update of Encrypted Data for Secure and Efficient Collaboration in the Cloud Environment

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 813-834页

作者： Chanhyeong Cho Byeori kim Haehyun Cho Taek-Young Youn Department of Cyber Security Dankook UniversityYongin16890Republic of Korea Department of Software Soongsil UniversitySeoul07027Republic of Korea

With the rise of remote collaboration,the demand for advanced storage and collaboration tools has rapidly ***,traditional collaboration tools primarily rely on access control,leaving data stored on cloud servers vulnerable due to insufficient *** paper introduces a novel mechanism that encrypts data in‘bundle’units,designed to meet the dual requirements of efficiency and security for frequently updated collaborative *** bundle includes updated information,allowing only the updated portions to be reencrypted when changes *** encryption method proposed in this paper addresses the inefficiencies of traditional encryption modes,such as Cipher Block Chaining(CBC)and Counter(CTR),which require decrypting and re-encrypting the entire dataset whenever updates *** proposed method leverages update-specific information embedded within data bundles and metadata that maps the relationship between these bundles and the plaintext *** utilizing this information,the method accurately identifies the modified portions and applies algorithms to selectively re-encrypt only those *** approach significantly enhances the efficiency of data updates while maintaining high performance,particularly in large-scale data *** validate this approach,we conducted experiments measuring execution time as both the size of the modified data and the total dataset size *** show that the proposed method significantly outperforms CBC and CTR modes in execution speed,with greater performance gains as data size ***,our security evaluation confirms that this method provides robust protection against both passive and active attacks.

关键词： Cloud collaboration mode of operation data update efficiency

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Comparing vocal structures of the parasitic and nonparasitic groups in Cuculinae

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Avian Research 2017年第4期8卷 238-242页

作者： Heeyoung kim Jin-Won Lee Jeong-chil Yoo Korea Institute of Ornithology and Department of Biology Kyung Hee UniversitySeoul 02447Republic of Korea

Background: Avian brood parasitism is a breeding strategy in which brood parasites lay their eggs in the nest of other *** behavior is closely related to aspects of the biological evolution of the parasitic species such as reduced female body size and plumage color ***,not much is known whether it is associated with the evolution of ***: We collected samples of the typical male calls of 67 species belonging to the sub?family *** the calls,we measured five acoustic parameters for each samples to test the differences in vocal structures between parasitic and nonparasitic *** control for potential phylogenetic effects,we also performed phylogenetic independent contrast ***: We found that vocal structures were relatively similar among the parasitic species with a tendency to simple and low?frequency *** addition,harmonic structures were observed more frequently in the nonparasitic ***: Overall,these results support the idea that brood parasitic behavior with associated ecological condi?tions may play a role in vocal evolution,a better understanding of which may greatly improve our knowledge of vocal diversification in non?oscine birds.

关键词： Brood parasitism Cuculinae Non-oscine bird Vocal evolution

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Therapeutic potential of exercise-hormone irisin in Alzheimer's disease

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Neural Regeneration Research 2025年第6期20卷 1555-1564页

作者： Eunhee kim Rudolph ETanzi Se Hoon Choi Genetics and Aging Research Unit MassGeneral Institute for Neurodegenerative DiseaseDepartment of NeurologyMassachusetts General HospitalHarvard Medical SchoolCharlestownMAUSA McCance Center for Brain Health Massachusetts General HospitalBostonMAUSA

Irisin is a myokine that is generated by cleavage of the membrane protein fibronectin type Ⅲ domain-containing protein 5(FNDC5) in response to physical exercise. Studies reveal that irisin/FNDC5 has neuroprotective functions against Alzheimer's disease, the most common form of dementia in the elderly, by improving cognitive function and reducing amyloid-β and tau pathologies as well as neuroinflammation in cell culture or animal models of Alzheimer's disease. Although current and ongoing studies on irisin/FNDC5 show promising results, further mechanistic studies are required to clarify its potential as a meaningful therapeutic target for alleviating Alzheimer's disease. We recently found that irisin treatment reduces amyloid-β pathology by increasing the activity/levels of amyloid-β-degrading enzyme neprilysin secreted from astrocytes. Herein, we present an overview of irisin/FNDC5's protective roles and mechanisms against Alzheimer's disease.

关键词： Alzheimer's disease exercise fibronectin typeⅢdomain-containing protein 5(FNDC5) irisin

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