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Obesity is an important determinant of severity in newly defined metabolic dysfunction-associated fatty liver disease

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Hepatobiliary & Pancreatic Diseases International 2022年第3期21卷 241-247页

作者： Ji Hye Huh Kwang Joon kim Seung Up kim Bong-soo Cha Byung-Wan Lee Division of Endocrinology and Metabolism Department of Internal MedicineHallym University Sacred Heart HospitalAnyang 14068Korea Division of Geriatrics Department of Internal MedicineYonsei University College of MedicineSeoul 03722Korea Division of Endocrinology and Metabolism Department of Internal MedicineYonsei University College of MedicineSeoul 03722Korea Institute of Gastroenterology Department of Internal MedicineYonsei University College of MedicineSeoul 03722Korea

Background: The recently proposed definition of metabolic dysfunction-associated fatty liver disease(MAFLD) is based on the co-existence of hepatic steatosis with other metabolic disorders, including obesity and metabolic risk abnormalities such as hyperglycemia, high blood pressure and dyslipidemia. This study aimed to assess MAFLD severity according to the presence of metabolic abnormalities and obesity. Methods: Using transient elastography, hepatic steatosis and fibrosis severity were assessed by measuring the controlled attenuation parameter and liver stiffness measurement. A total of 1163 patients with MAFLD were categorized into the following four groups according to metabolic risk abnormalities and obesity presence: non-obese without metabolic risk abnormality group(Group 1;reference group);nonobese with metabolic risk abnormality group(Group 2);obese without metabolic risk abnormality group(Group 3);and obese with metabolic risk abnormality group(Group 4). A multiple logistic regression analysis was performed to determine severe hepatic steatosis and fibrosis risk in each group in both unadjusted and adjusted models. Results: In the adjusted model, the odds ratios(ORs) [95% confidence interval(CI)] for severe hepatic steatosis in Groups 2, 3, and 4 were 1.07(0.61-1.88), 2.43(1.44-4.08), and 4.07(2.56-6.48), respectively( P trend < 0.001). For liver fibrosis, compared with Group 1, Group 2 showed no significant increases in OR, whereas Groups 3 and 4(obese groups) showed significant increases(OR = 4.70, 95% CI: 1.24-17.82 and OR = 6.43, 95% CI: 1.88-22.02, respectively). Conclusions: Obesity, rather than metabolic abnormality, is the principal determinant of severe hepatic steatosis and fibrosis in patients with MAFLD.

关键词： Metabolic dysfunction-associated fatty liver disease Metabolically-healthy obesity Liver fibrosis

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The effectiveness of emotion-focused art therapy on the resilience and self-image of emergency physicians

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World Journal of Emergency Medicine 2022年第6期13卷 479-484页

作者： soo Kyung Eo Chanwoong kim Kyung Hye Park Eun Kyung Eo Graduate School of Art Therapy at CHA University Pocheon 11160Republic of Korea Department of Emergency Medicine Chung-Ang University College of MedicineSeoul 06974Republic of Korea Department of Medical Education Yonsei University Wonju College of MedicineWonju 26426Republic of Korea Department of Emergency Medicine Wonju Severance Christian HospitalWonju 26426Republic of Korea Department of Emergency Medicine Soonchunhyang University Bucheon HospitalBucheon 14584Republic of Korea

INTRODUCTION Resilience refers to the quality of being able to overcome adversity.[1]Studies conducted in the United States[2]and China[3]following the 2019 coronavirus disease(COVID-19)pandemic reported reduced resilience levels among medical *** resilience levels are associated with low burnout levels among residents.[4]Physician burnout affects patients’safety and quality of care.[5]In particular,emergency physicians(EPs)are more prone to exhaustion or poor resilience,as their turnover intention tends to be higher.[6]Therefore,improving EPs’resilience is imperative.

关键词： image physician overcome

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Origin of superior low-cycle fatigue resistance of an interstitial metastable high-entropy alloy

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Journal of Materials Science & Technology 2022年第20期115卷 115-128页

作者： Seyed Amir Arsalan Shams Jae Wung Bae Jae Nam kim Hyoung Seop kim Taekyung Lee Chong soo Lee Graduate Institute of Ferrous Technology Pohang University of Science and TechnologyPohang 37673Republic of Korea Department of Materials Science and Engineering Pohang University of Science and TechnologyPohang 37673Republic of Korea School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea

In this study, the deformation behaviors and related microstructural evolutions were investigated in either monotonic or cyclic deformation modes in an interstitial metastable high-entropy alloy. These investigations aimed to reveal the mechanisms underlying the superior low-cycle fatigue(LCF) life of this alloy.A thermomechanical process was applied to induce fine-grained(FG) and coarse-grained(CG) microstructures in Fe–30Mn–10Co–10Cr–0.4C(atomic percentage) alloy. Their superior combination of strength and ductility was attributed to the appearance of deformation-induced ε-martensite and the presence of carbon. The CG alloy showed a greater volume fraction of ε-martensite than the FG alloy in the monotonic deformation mode, and vice versa in the cyclic mode. Such a disparity was interpreted in light of the back-stress effect of the relaxed γ-grain boundaries in the latter mode. Meanwhile, the γ-to-ε phase transformation under cyclic loading at low strain amplitudes(0.4%) barely led to an improved fatigue life as compared with that at higher strain amplitudes(≥ 0.55%). The high reversibility of partial dislocation motions under cyclic loading and delaying the formation of dislocation cells through the martensitic transformation could explain why the alloys investigated in this study exhibited a superior LCF life compared with high-entropy alloys reported in previous studies.

关键词： High-entropy alloy Transformation-induced plasticity Monotonic deformation Cyclic deformation Low-cycle fatigue Stacking faults

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Comparison between sodium iodate and lipid peroxide murine models of age-related macular degeneration for drug evaluation-a narrative review

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Annals of Eye Science 2022年第1期7卷 86-105页

作者： soo-Young kim Haohua Qian Department of Pharmaceutics Department of BiologyVirginia Commonwealth UniversityRichmondVAUSA Center for Nanomedicine Wilmer Eye InstituteDepartment of OphthalmologyJohns Hopkins University of MedicineBaltimoreMDUSA Visual Function Core National Eye InstituteNational Institutes of HealthBethesdaMDUSA

Objective:In this review,non-transgenic models of age-related macular degeneration(AMD)are discussed,with focuses on murine retinal degeneration induced by sodium iodate and lipid peroxide(HpODE)as preclinical study ***:AMD is the most common cause of vision loss in a world with an increasingly aging *** major phenotypes of early and intermediate AMD are increased drusen and autofluorescence,Müller glia activation,infiltrated subretinal microglia and inward moving retinal pigment epithelium(RPE)*** AMD may progress to advanced AMD,characterized by geography atrophy and/or choroidal neovascularization(CNV).Various transgenic and non-transgenic animal models related to retinal degeneration have been generated to investigate AMD pathogenesis and pathobiology,and have been widely used as potential therapeutic evaluation ***:Two retinal degeneration murine models induced by sodium iodate and HpODE are *** pathological features and procedures of these two models are *** addition,practical protocol and material preparation and assessment methods are ***:Retina degeneration induced by sodium iodate and HpODE in mouse eye resembles many clinical aspects of human AMD and complimentary to the existent other animal ***,standardization of procedure and assessment protocols is needed for preclinical *** studies of HpODE on different routes,doses and species will be valuable for the future extensive *** many merits of murine studies,differences between murine and human should be always considered.

关键词： Retina degeneration retinal pigment epithelium(RPE) photoreceptor microglia

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Interfacial Behaviors of Basalt Fiber‑Reinforced Polymeric Composites: A Short Review

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Advanced Fiber Materials 2022年第6期4卷 1414-1433页

作者： Seong‑Hwang kim Jong‑Hoon Lee Jong‑Woo kim Seul‑Yi Lee soo‑Jin Park Department of Chemistry Inha University100 InharoIncheon 22212South Korea

Basalt fibers(BFs)have emerged as a promising thermal insulation material for various applications,such as fireproof clothes/walls and protective equipment in military and civil *** have many desirable characteristics,such as low thermal conductivity,excellent flame resistance,exceptional mechanical strength,facile manipulability,environmental friendliness,and ***,the low intrinsic interfacial properties of BFs due to their chemical inertness and macro-scaled sizes have been a challenge for high performance of BFs-reinforced polymeric composites(BFRPs).Since the mechanical properties of BFRPs significantly depend on the interfacial interaction between the fibers and the matrix,it is critical to understand how incorporating BFs influences the properties of the *** this end,the aim of this review is to report on recent research progress with emphasis on the interfacial behavior in *** relationships between the fiber–matrix interfacial adhesion and the mechanical properties of the BFRPs are briefly described with systematic and up-to-date surface modification techniques summarized into two categories:surface modifications(“wet”and“dry”)and multi-scaled ***,several strategies for increasing the interfacial adhesion of BFs within the polymeric matrix to provide new ideas and insight for future research on the BFRPs are discussed.

关键词： Basalt fibers Polymeric matrix Surface modification Interface

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Preserving finger length in a patient with symmetric digital gangrene under local anesthesia:A case report

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世界临床病例杂志 2023年第27期11卷 6640-6645页

作者： Keun Hyung kim In Chang Ko Hoon kim soo Yeon Lim Department of Plastic and Reconstructive Surgery Konyang University Medical CenterKonyang University of College of MedicineDaejeon 35365South Korea Department of Plastic and Reconstructive Surgery Konyang University HospitalKonyang University of College of MedicineMyunggok Medical Research CenterDaejeon 35365South Korea

BACKGROUND Case reports of symmetric digital gangrene resulting from high-dose vasopressors use in patients with alcoholic ketoacidosis,leading to cardiac arrest,are *** date,no specific treatment method for autolysis or surgical amputation or guidelines for determining the level of amputation have been *** SUMMARY In this case report,we describe a treatment method that effectively preserved the function of fingers by surgical treatment under local anesthesia with a minimum operative time,while also preserving finger length to the maximum possible *** Our approach may contribute to improved postoperative quality of life by preserving finger length.

关键词： Acidosis Disseminated intravascular coagulation Ketosis Purpura fulminans Surgical amputation Case report

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Treatment satisfaction after I year high-power potassiumtitanyl-phosphate photoselective vaporization of the prostate

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Asian Journal of Andrology 2010年第5期12卷 728-734页

作者： Ja Hyeon Ku Min Chul Cho hyeong Seok kim Jae-Seung Paick soo Woong kim Department of Urology Seoul National University Hospital Seoul 100-744 Korea

To investigate the factors that influence treatment satisfaction after high-power potassium-titanyl-phosphate （KTP） laser vaporization of the prostate, we compared the characteristics between patients who were satisfied and those who were not satisfied. In all, 97 patients aged between 53-82 years （median age 67 years） underwent high-power KTP laser vaporization of the prostate for lower urinary tract symptoms due to benign prostatic hyperplasia. At 12 months postoperatively, 60 patients were satisfied with the treatment, whereas 37 were dissatisfied. Although there were no differences in International Prostate Symptom Score （IPSS） values at baseline, the satisfied group scored better in total IPSS at 1, 3, 6, and 12 months postoperatively （P 〈 0.05）. At baseline, the maximum flow rate （Qmax） was lower in the dissatisfied group and remained low throughout the follow-up period, with the exception of 1 month postoperatively （P 〈 0.05）, compared with the satisfied group. There were no differences in other objective data between the two groups, including post-void residual and the number of voids based on the frequency-volume charts. In a multivariate model, a higher bladder contractility index was associated with a greater likelihood of treatment satisfaction 12 months after high-power KTP laser vaporization （odds ratio 1.024, 95% confidence interval 1.001-1.048, P 〈 0.05）. Patients who were not satisfied following the surgery had a smaller improvement in subjective symptoms and Qmax. In addition, our findings suggest that the relative risk of treatment dissatisfaction following high-power KTP laser vaporization was increased in patients with weak detrusor contractility.

关键词： benign prostatic hyperplasia potassium-titanyl-phosphate prostate satisfaction vaporization

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Memristive Devices Based on Two-Dimensional Transition Metal Chalcogenides for Neuromorphic Computing

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Nano-Micro Letters 2022年第4期14卷 29-58页

作者： Ki Chang Kwon Ji Hyun Baek Kootak Hong soo Young kim Ho Won Jang Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoul 08826Republic of Korea Interdisciplinary Materials Measurement Institute Korea Research Institute of Standards and Science(KRISS)Daejeon 34133Republic of Korea Department of Materials Science and Engineering Institute of Green Manufacturing TechnologyKorea UniversitySeoul 02841Republic of Korea Advanced Institute of Convergence Technology Seoul National UniversitySuwon 16229Korea

Two-dimensional(2D)transition metal chalcogenides(TMC)and their heterostructures are appealing as building blocks in a wide range of electronic and optoelectronic devices,particularly futuristic memristive and synaptic devices for brain-inspired neuromorphic computing *** distinct properties such as high durability,electrical and optical tunability,clean surface,flexibility,and LEGO-staking capability enable simple fabrication with high integration density,energy-efficient operation,and high *** review provides a thorough examination of high-performance memristors based on 2D TMCs for neuromorphic computing applications,including the promise of 2D TMC materials and heterostructures,as well as the state-of-the-art demonstration of memristive *** challenges and future prospects for the development of these emerging materials and devices are also *** purpose of this review is to provide an outlook on the fabrication and characterization of neuromorphic memristors based on 2D TMCs.

关键词： Two-dimensional materials Memristors Neuromorphic computing Artificial synapses Transition metal chalcogenides

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Highly Flexible Fabrics/Epoxy Composites with Hybrid Carbon Nanofillers for Absorption-Dominated Electromagnetic Interference Shielding

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Nano-Micro Letters 2022年第11期14卷 307-323页

作者： Jong-Hoon Lee Yoon-Sub kim Hea-Jin Ru Seul-Yi Lee soo-Jin Park Department of Chemistry Inha University100 InharoIncheon 22212Korea Korea Architecture Safety Testing and Research Institute(KASTI) 88 Gasan Digital 1-roSeoul 08590Korea

Epoxy-based nano-composites can be ideal electromagnetic interference(EMI)-shielding materials owing to their lightness,chemical inertness,and mechanical ***,poor conductivity and brittleness of the epoxy resin are challenges for fast-growing portable and flexible EMI-shielding applications,such as smart wristband,medical cloth,aerospace,and military *** this study,we explored hybrid nanofillers of single-walled carbon nanotubes(SWCNT)/reduced graphene oxide(rGO)as conductive inks and polyester fabrics(PFs)as a substrate for flexible EMI-shielding *** highest electrical conductivity and fracture toughness of the SWCNT/rGO/PF/epoxy composites were 30.2 S m^(−1)and 38.5 MPa m^(1/2),which are~270 and 65%enhancement over those of the composites without SWCNTs,*** mechanical durability was demonstrated by stable electrical conductivity retention during 1000 cycles of bending *** EMI-shielding effectiveness of~41 dB in the X-band frequency of 8.2-12.4 GHz with a thickness of 0.6 mm was obtained with an EM absorption-dominant behavior over a 0.7 absorption *** results are attributed to the hierarchical architecture of the macroscale PF skeleton and nanoscale SWCNT/rGO networks,leading to superior EMI-shielding *** believe that this approach provides highly flexible and robust EMI-shielding composites for next-generation wearable electronic devices.

关键词： Conductive polymer composites Fracture toughness Flexible composites Absorption-dominated electromagnetic interference shielding

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Fragmentation stability and retention time-shift obtained by LC-MS/MS to distinguish sialylated N-glycan linkage isomers in therapeutic glycoproteins

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Journal of Pharmaceutical Analysis 2023年第3期13卷 305-314页

作者： Chi soo Park Minju Kang Ahyeon kim Chulmin Moon Mirae kim Jieun kim Subin Yang Leeseul Jang Ji Yeon Jang Ha Hyung kim Department of Global Innovative Drugs Graduate School of Chung-Ang UniversitySeoul06974Republic of Korea

Sialylated N-glycan isomers withα2-3 orα2-6 linkage(s)have distinctive roles in glycoproteins,but are difficult to ***-type(WT)and glycoengineered(mutant)therapeutic glycoproteins,cytotoxic T lymphocyte-associated antigen-4-immunoglobulin(CTLA4-Ig),were produced in Chinese hamster ovary cell lines;however,their linkage isomers have not been *** this study,N-glycans of CTLA4-Igs were released,labeled with procainamide,and analyzed by liquid chromatography-tandem mass spectrometry(MS/MS)to identify and quantify sialylated N-glycan linkage *** linkage isomers were distinguished by comparison of 1)intensity of the N-acetylglucosamine ion to the sialic acid ion(Ln/Nn)using different fragmentation stability in MS/MS spectra and 2)retention time-shift for a selective m/z value in the extracted ion *** isomer was distinctively identified,and each quantity(>0.1%)was obtained relative to the total N-glycans(100%)for all observed ionization *** sialylated N-glycan isomers with onlyα2-3 linkage(s)in WT were identified,and each isomer's sum of quantities was 50.4%.Furthermore,39 sialylated N-glycan isomers(58.8%)in mono-(3 N-glycans;0.9%),bi-(18;48.3%),tri-(14;8.9%),and tetra-(4;0.7%)antennary structures of mutant were obtained,which comprised mono-(15 N-glycans;25.4%),di-(15;28.4%),tri-(8;4.8%),and tetra-(1;0.2%)sialylation,respectively,with onlyα2-3(10 N-glycans;4.8%),bothα2-3 andα2-6(14;18.4%),and onlyα2-6(15;35.6%)linkage(s).These results are consistent with those forα2-3 neuraminidase-treated *** study generated a novel plot of Ln/Nn versus retention time to distinguish sialylated N-glycan linkage isomers in glycoprotein.

关键词： Therapeutic glycoprotein Sialylation Linkage isomer LC-MS/MS

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