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Enhanced quantitative X-ray phase-contrast images using Foucault differential filters

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Chinese Optics Letters 2017年第8期15卷 44-47页

作者： jaeho choi Young-Sung Park Department of Physics Dankook University Division of RI Convergence Research Korea Institute of Radiological and Medical Sciences

Several X-ray phase visualization methods are being real- ized for imaging of phase objects, such as biological and polymeric specimens. Grating-based phase-contrast imaging using a source-grating-attached X-ray tube ... 详细信息

关键词： real Enhanced quantitative X-ray phase-contrast images using Foucault differential filters FDF

A Near Optimal Power Allocation Scheme for Cooperative Relay Networking with NOMA

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China Communications 2019年第3期16卷 122-131页

作者： Haiyang Yu Wei Duan Guoan Zhang Yancheng Ji Xiaojun Zhu jaeho choi The School of Electronics and Information Nantong University Division of Electronics and Information Engineering Chonbuk National University Department of ECE CAIIT Chonbuk National University

In this paper, we propose cooperative relay networks with non-orthogonal multiple access in order to design a near-optimal power allocation strategy. Like other next generation wireless technologies, spatially multiplexed transmissions are achieved by relay nodes which enables decode-and-forward relaying of a new superposition code after reception from the source. It is worth noting that, since it is hard to exactly prove the proposed PA scheme, due the fact that it is one kind of the approximate conjectures. Therefore, mathematical and numerical methods have been used to clarify the feasibility of the proposal. Numerical results indicate that it is able to asymptotically achieve the optimal sum rate at the higher signal-to-noise ratio region with the proposed strategy applied instead of negligible performance loss.

关键词： non-orthogonal multiple access cooperative multi-relay networks decode-and-forward two-stage power allocation

Synergistic stimulation of surface topography and biphasic electric current promotes muscle regeneration

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Bioactive Materials 2022年第5期7卷 118-129页

作者： Indong Jun Na Li Jaehee Shin jaeho Park Young Jun Kim Hojeong Jeon Hyuk choi Jae-Gu Cho Byoung Chan choi Hyung-Seop Han Jae-Jun Song Environmental Safety Group Korea Institute of Science&Technology Europe(KIST-EUROPE)Saarbrücken66123Germany Department of Otorhinolaryngology-Head and Neck Surgery Korea University College of MedicineSeoul02841Republic of Korea Department of Medical Sciences Graduate School of MedicineKorea UniversitySeoul02841Republic of Korea Center for Biomaterials Biomedical Research InstituteKorea Institute of Science&Technology(KIST)Seoul02792Republic of Korea Laser Surface Texturing Group AYECLUSGyeonggi-do14255Republic of Korea

Developing a universal culture platform that manipulates cell fate is one of the most important tasks in the investigation of the role of the cellular *** study focuses on the application of topographical and electrical field stimuli to human myogenic precursor cell(hMPC)cultures to assess the influences of the adherent direction,proliferation,and differentiation,and induce preconditioning-induced therapeutic ***,a topographical surface of commercially available culture dishes was achieved by femtosecond laser *** detachable biphasic electrical current system was then applied to the hMPCs cultured on laser-textured culture ***-textured topographies were remarkably effective in inducing the assembly of hMPC myotubes by enhancing the orientation of adherent hMPCs compared with flat ***,electrical field stimulation through laser-textured topographies was found to promote the expression of myogenic regulatory factors compared with nonstimulated *** such,we successfully demonstrated that the combined stimulation of topographical and electrical cues could effectively enhance the myogenic maturation of hMPCs in a surface spatial and electrical field-dependent manner,thus providing the basis for therapeutic strategies.

关键词： Topography Electrical field stimulation Femtosecond laser Human myogenic precursor cell Cell therapy

Regulation of c-SMAC formation and AKT-mTOR signaling by the TSG101-IFT20 axis in CD4^(+)T cells

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Cellular & Molecular Immunology 2023年第5期20卷 525-539页

作者： Jiung Jeong In Kang Yumin Kim Keun Bon Ku Jang Hyun Park Hyun-Jin Kim Chae Won Kim Jeongwoo La Hi Eun Jung Hyeon Cheol Kim Young Joon choi jaeho Kim Joon Kim Heung Kyu Lee Graduate School of Medical Science and Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Department of Internal Medicine Seoul National University HospitalSeoul 03080Republic of Korea Department of Biological Sciences KAISTDaejeon 34141Republic of Korea Department of Convergent Research of Emerging Virus Infection Korea Research Institute of Chemical TechnologyDaejeon 34114Republic of Korea.

CD4^(+)T cells play major roles in the adaptive immune system,which requires antigen recognition,costimulation,and cytokines for its elaborate *** studies have provided new insight into the importance of the supramolecular activation cluster(SMAC),which comprises concentric circles and is involved in the amplification of CD4^(+)T cell ***,the underlying mechanism of SMAC formation remains poorly ***,we performed single-cell RNA sequencing of CD4^(+)T cells left unstimulated and stimulated with anti-CD3 and anti-CD28 antibodies to identify novel proteins involved in their *** found that intraflagellar transport 20(IFT20),previously known as cilia-forming protein,was upregulated in antibody-stimulated CD4^(+)T cells compared to unstimulated CD4^(+)T *** also found that IFT20 interacted with tumor susceptibility gene 101(TSG101),a protein that endocytoses ubiquitinated T-cell *** interaction between IFT20 and TSG101 promoted SMAC formation,which led to amplification of AKT-mTOR ***,IFT20-deficient CD4^(+)T cells showed SMAC malformation,resulting in reduced CD4^(+)T cell proliferation,aerobic glycolysis,and cellular ***,mice with T-cell-specific IFT20 deficiency exhibited reduced allergen-induced airway ***,our data suggest that the IFT20-TSG101 axis regulates AKT-mTOR signaling via SMAC formation.

关键词： CD4^(+)T cell Intraflagellar transport 20 Tumor susceptibility gene 101 AKT-mTOR signaling Asthma Supramolecular activation cluster

Fermented Lysate of Lactiplantibacillus Isolated From Green Tea Leaves Protects Keratinocytes Against Stress Hormone and Staphylococcus Aureus

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China Detergent & Cosmetics 2021年第3期6卷 54-60页

作者： Kilsun Myoung Eun-Jeong choi Hanbyul Kim Hung Su Baek Hyoung-June Kim Won-Seok Park Hyunhee Kim jaeho Yeon Research and Development Center AmorepacificKorea Amorepacific(Shanghai)R&I Center Co. Ltd.ChinaKilsun

Psychological stress can impair epidermal barrier function by inhibiting the proliferation and differentiation of *** this study,the effect of stress hormone on skin microorganisms was confirmed through an in vitro ***,a typical stress hormone,inhibited the growth of skin microbes,especially Staphylococcus epidermidis,which is a commensal skin *** cortisol enhanced the adhesion of the pathogenic bacterium Staphylococcus aureus to *** fermented lysate of Lactiplantibacillus isolated from green tea leaves(LFL)affected the growth of skin microbes in the opposite manner to cortisol,and increased the expression of a keratinocyte differentiation marker that was suppressed by cortisol and ***,LFL inhibited the adhesion of *** to *** modulating effect of LFL on the growth and adhesion of skin microbes was unaffected by the presence of *** also alleviated cell damage in reconstructed human epidermis caused by *** results suggest that LFL may be useful as a cosmetic ingredient capable of controlling skin microbiome balance and protecting skin health against psychological stress.

关键词： stress hormone skin microbiome lactobacillus ferment lysate