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Accidental esophageal intubation via a large type C congenital tracheoesophageal fistula:A case report

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World Journal of Clinical Cases 2022年第30期10卷 11198-11203页

作者： seong Min Hwang Myeong Jin kim Sora kim Saeyoung kim Department of Anesthesiology and Pain Medicine School of MedicineKyungpook National UniversityDaegu 41944South Korea

BACKGROUND Tracheoesophageal fistula(TEF)is a congenital anomaly characterized by interruptions in esophageal continuity with or without fistulous communication to the *** management during TEF repair is challenging because of the difficulty of perioperative airway *** is important to determine the appropriate position of the endotracheal tube(ETT)for proper ventilation and to prevent excessive gastric ***,the tip of the ETT should be placed immediately below the fistula and above the *** SUMMARY A full-term,one-day-old,2.4 kg,50 cm male neonate was diagnosed with TEF type *** induction,an ETT was inserted using video laryngoscope and advanced deeply to ensure that the tip passed over the fistula,according to known *** passage of the ETT through the vocal cords was confirmed via video ***,after inflating the ETT cuff,breath sounds were not heard on bilateral lung ***,gastric sounds were *** that a large fistula(approximately 6.60 mm×4.54 mm)located 10.2mm above the carina was confirmed on preoperative tracheal computed tomography,the possibility of unintentional esophageal intubation was highly ***,we decided to uncuff and withdraw the ETT carefully for repositioning,while monitoring auscultation and end-tidal CO2 *** a certain point(9.5 cm from the lip),clear breath sounds and proper end-tidal CO_(2) readings were suddenly achieved,and adequate ventilation was *** Preanesthetic anatomical evaluation with imaging studies in TEF is necessary to minimize complications related to airway management.

关键词： Tracheoesophageal fistula Imaging study Anatomy Intubation Airway management Auscultation Case report

“One stone,two birds”solvent system to fabricate microcrystalline cellulose–Ti_(3)C_(2)T_(x)nanocomposite film as a flexible dielectric and thermally conductive material

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Nano Research 2023年第2期16卷 3240-3253页

作者： Yong-Zhu Yan Shuwei Li Sung Soo Park Wei-Jin Zhang jun Seok Lee jung Rae kim Dong Gi seong Chang-Sik Ha Department of Polymer Science and Engineering School of Chemical EngineeringPusan National UniversityBusan 46241Republic of Korea School of Chemical and Biomolecular Engineering Pusan National UniversityBusan 46241Republic of Korea Division of Advanced Materials Engineering Dong-Eui UniversityBusan 47340Republic of Korea

A strategy for fabricating microcrystalline cellulose–Ti_(3)C_(2)T_(x)(MCC–MXene)nanocomposite films with high relative permittivity,high thermal conductivity,and excellent mechanical properties was *** MCC–MXene nanocomposite film was fabricated by casting a solution containing N,N-dimethylacetamide/lithium chloride(DMAc/LiCl)-soluble MCC and DMAcdispersible MXene nanosheets,followed by humidity control *** MXene nanosheets greatly enhanced the permittivity of the nanocomposite films owing to interfacial ***,the nanocomposite film with 20 wt.%MXene content achieved a desirable permittivity of 71.4 at 102 Hz(a 770%improvement against that of neat cellulose),while the dielectric loss only increased by 1.8 times(from 0.39 to 0.70).The obtained nanocomposite films with 20 wt.%and 30 wt.%MXene exhibited remarkable in-plane thermal conductivities of 8.523 and 9.668 W∙m^(−1)∙K^(−1),respectively,owing to the uniform dispersion and selfalignment of the MXene layered ***,the uniformly dispersed MXene nanosheets in the MCC network with interfacial interaction(hydrogen bonding)and mechanical entanglement endowed the nanocomposite films with excellent mechanical properties and ***,the thermal stability,water resistance,and antibacterial properties of the nanocomposite films were effectively improved with the introduction of ***,using DMAc/LiCl as the solvent system not only improves the compatibility between MCC and MXene but also avoids the problem of easy oxidation of MXene in aqueous *** the high stability of the MCC–MXene solution and enhanced properties of the MCC–MXene films,the proposed strategy manifests great potential for fabricating natural biomass-based dielectric materials.

关键词： Ti_(3)C_(2)T_(x) microcrystalline cellulose flexible dielectric thermally conductive N,N-dimethylacetamide/lithium chloride(DMAc/LiCl) compatibility

Short-Term Wind Power Prediction Using Fuzzy Clustering and Support Vector Regression

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Journal of Energy and Power Engineering 2012年第10期6卷 1605-1610页

作者： In-Yong Seo Bok-Nam Ha Sung-Woo Lee Moon-Jong Jang Sang-Ok kim seong-jun kim KEPCO Research Institute Daejeon 305-380 South Korea Gangneung-Wonju National University Gangneung 210-702 South Korea

A sustainable production of electricity is essential for low carbon green growth in South Korea. The generation of wind power as renewable energy has been rapidly growing around the world. Undoubtedly, wind energy is unlimited in potential. However, due to its own intermittency and volatility, there are difficulties in the effective harvesting of wind energy and the integration of wind power into the current electric power grid. To cope with this, many works have been done for wind speed and power forecasting. In this paper, an SVR (support vector regression) using FCM (Fuzzy C-Means) is proposed for wind speed forecasting. This paper describes the design of an FCM based SVR to increase the prediction accuracy. Proposed model was compared with ordinary SVR model using balanced and unbalanced test data. Also, multi-step ahead forecasting result was compared. Kernel parameters in SVR are adaptively determined in order to improve forecasting accuracy. An illustrative example is given by using real-world wind farm dataset. According to the experimental results, it is shown that the proposed method provides better forecasts of wind power.

关键词：支持向量回归功率预测模糊聚类风电短期风力发电模糊C-均值可持续发展

Controlled afterglow luminescent particles for photochemical tissue bonding

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Light(Science & Applications) 2022年第11期11卷 2755-2765页

作者： seong-Jong kim Minji Choi Guosong Hong Sei Kwang Hahn Department of Materials Science and Engineering Pohang University of Science and Technology(POSTECH)77 Cheongam-roNam-guPohangGyeongbuk 37673Korea Department of Materials Science and Engineering Stanford UniversityStanfordCA 94305USA

Upconversion materials(UCMs)have been developed to convert tissue-penetrating near-infrared(NIR)light into visible ***,the low energy conversion effciency of UCMs has limited their further biophotonic ***,we developed controlled afterglow luminescent particles(ALPs)of ZnS:Ag,Co with strong and persistent green luminescence for photochemical tissue bonding(PTB).The co-doping of Ag^(+) and Co^(2+) ions into ZnS:Ag,Co particles with the proper vacancy formation of host ions resulted in high luminescence intensity and long-term *** addition,the ALPs of ZnS:Ag,Co could be recharged rapidly under short ultraviolet(UV)irradiation,which effectively activated rose bengal(RB)in hyaluronate-RB(HA-RB)conjugates for the crosslinking of dissected collagen layers without additional light *** remarkable PTB of ZnS:Ag,Co particles with HA-RB conjugates was confirmed by in vitro collagen fibrillogenesis assay,in vivo animal wound closure rate analysis,and in vivo tensile strength evaluation of incised skin *** together,we could confirm the feasibility of controlled ALPs for various biophotonic applications.

关键词： bonding fir closure

Finite element analysis using elasto-visco-plastic self-consistent polycrystal model for E-form Mg sheet subjected to bending

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Journal of Magnesium and Alloys 2023年第4期11卷 1393-1407页

作者： Bohye Jeon Min-seong kim Shi-Hoon Choi Youngung Jeong Department of Materials Convergence and System Engineering Changwon National UniversityChangwon-siGyeongnamRepublic of Korea Center for Energy Materials Research Korea Institute of Science and TechnologySeoulRepublic of Korea Department of Advanced Components and Materials Engineering Sunchon National UniversitySuncheon-siJeollanam-doRepublic of Korea School of Materials Science and Engineering Changwon National UniversityChangwon-siGyeongnamRepublic of Korea

The mechanical behavior of a magnesium alloy E-form under bending was investigated using the elasto-visco-plastic polycrystal model(ΔEVPSC) and its finite element(FE) implementation(ΔEVPSC-FE) developed in Jeong et al. and Jeong and Tomé. The crystallographic orientation distribution(COD) obtained from X-ray diffraction was used to represent the initial texture, and the Voce hardening parameters were calibrated by fitting the uniaxial tension and the compression flow stress curves. A quasi-static FE analysis of a miniaturized V-bending operation was conducted using the ΔEVPSC-FE model. The bending induced an inhomogeneous stress response along the through-thickness and the lateral directions, which was well captured by the model. Moreover, the predictive capability of the model was validated by comparing with various experimental results such as(1) force vs. displacement curves;(2) the through-thickness variations in the twin volume fraction;and(3) the changes in crystallographic texture as a function of displacement. Additional bending simulation was performed using an isotropic texture, the result of which suggests that the potential improvement in bendability of the magnesium alloy is attainable by weakening the initial texture. Moreover, the simulation results imply that the crystallographic texture, which may affect the twin activation across the thickness direction, plays a significant role in the shifting direction of the neutral layer.

关键词： FEM Texture V-bending Polycrystal Magnesium Elasto-visco-plasticity

Deep Drawing Process Using a Tractrix Die for Manufacturing Liners for a CNG High-Pressure Vessel(Type Ⅱ)

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Chinese Journal of Mechanical Engineering 2022年第1期35卷 132-143页

作者： Gun‑Young Park Hyo‑Seo Kwak Hyo‑seong Jang Chul kim School of Mechanical Engineering Pusan National UniversityPusan 46241South Korea Department of Mechanical Engineering Dong-eui UniversityPusan 47340Korea.

The liner of a CNG pressure vessel is manufactured by a DDI(deep drawing and ironing)process for the cylinder part,which is a continuous process that includes a drawing process to reduce the diameter of the billet and a subsequent ironing process to reduce the thickness of the billet.A tractrix die used in the 1^(st) deep drawing allows the blank to flow smoothly by decreasing the punch load and radial tensile stress occurring in the *** also increases the draw ratio compared to conventional dies,but it causes forming *** this study,a shape coefficient(S_(c))is proposed for the tractrix die using the blank diameter(D_(0)),inflow diameter of the workpiece(d_(i)),and inflow angle of the workpiece(θ)for design of the tractrix *** effects of the thickness and inflow angle of the workpiece on wrinkling and folding were investigated through ***,a discriminant is proposed for the relative radial stress(σ)generated during the deep drawing process using the tractirx die and used to predict *** on the results,the blank thickness,the draw ratio,and the inflow of the workpiece angle in the 1^(st) deep drawing process are suggested,and the number of operations in the DDI process was reduced from 6 to *** improves the productivity and reduces the manufacturing cost.

关键词： Tractrix die Deep drawing Wrinkling Folding LDR(Limit draw ratio) FEM

Stereotactic body radiation therapy and radiofrequency ablation in patients with hepatocellular carcinoma:not a rival but a partner for the cure

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Hepatobiliary Surgery and Nutrition 2022年第5期11卷 770-772页

作者： Nalee kim Jinsil seong Department of Radiation Oncology Samsung Medical CenterSungkyunkwan University School of MedicineSeoulRepublic of Korea Department of Radiation Oncology Yonsei Cancer CenterYonsei University College of MedicineSeoulRepublic of Korea

Among various liver-directed local treatments for hepatocellular carcinoma(HCC),stereotactic body radiation therapy(SBRT),which delivers a highly ablative dose to the tumor,has increasingly been adopted in clinical practice and demonstrates favorable *** the low priority of SBRT in the current treatment guidelines(1,2),there have been several series comparing SBRT and other local treatments,such as radiofrequency ablation(RFA),transarterial chemoembolization.

关键词： hepatocellular patients clinical

Artifacts Reduction Using Multi-Scale Feature Attention Network in Compressed Medical Images

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Computers, Materials & Continua 2022年第2期70卷 3267-3279页

作者： Seonjae kim Dongsan jun Department of Convergence IT Engineering Kyungnam UniversityChangwon51767Korea

Medical image compression is one of the essential technologies to facilitate real-time medical data transmission in remote healthcare *** general,image compression can introduce undesired coding artifacts,such as blocking artifacts and ringing *** this paper,we proposed a Multi-Scale Feature Attention Network(MSFAN)with two essential parts,which are multi-scale feature extraction layers and feature attention layers to efficiently remove coding artifacts of compressed medical *** feature extraction layers have four Feature Extraction(FE)*** FE block consists of five convolution layers and one CA block for weighted skip *** order to optimize the proposed network architectures,a variety of verification tests were conducted using validation *** used Computer Vision Center-Clinic Database(CVC-ClinicDB)consisting of 612 colonoscopy medical images to evaluate the enhancement of image *** proposedMSFAN can achieve improved PSNR gains as high as 0.25 and 0.24 dB on average compared to DnCNNand DCSC,respectively.

关键词： Medical image processing convolutional neural network deep learning telemedicine artifact reduction image restoration

Brassinosteroids enhance salicylic acid-mediated immune responses by inhibiting BIN2 phosphorylation of clade I TGA transcription factors in Arabidopsis

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Molecular Plant 2022年第6期15卷 991-1007页

作者： Yeong-Woo kim Ji-Hyun Youn Jeehee Roh Jeong-Mok kim seong-Ki kim Tae-Wuk kim Department of Life Science Hanyang UniversitySeoul 04763Republic of Korea Department of Life Science Chung-Ang UniversitySeoul 06973Republic of Korea Research Institute for Convergence of Basic Science Hanyang UniversitySeoul 04763Republic of Korea Hanyang Institute of Bioscience and Biotechnology Hanyang UniversitySeoul 04763Republic of Korea

Salicylic acid (SA) plays an important role in plant immune response, including resistance to pathogens and systemic acquired resistance. Two major components, NONEXPRESSOR OF PATHOGENESIS-RELATED GENES (NPRs) and TGACG motif-binding transcription factors (TGAs), are known to mediate SA signaling, which might also be orchestrated by other hormonal and environmental changes. Nevertheless, the molecular and functional interactions between SA signaling components and other cellular signaling pathways remain poorly understood. Here we showed that the steroid plant hormone brassinosteroid (BR) promotes SA responses by inactivating BR-INSENSITIVE 2 (BIN2), which inhibits the redox-sensitive clade I TGAs in Arabidopsis. We found that both BR and the BIN2 inhibitor bikinin synergistically increase SA-mediated physiological responses, such as resistance to Pst DC3000. Our genetic and biochemical analyses indicated that BIN2 functionally interacts with TGA1 and TGA4, but not with other TGAs. We further demonstrated that BIN2 phosphorylates Ser-202 of TGA4, resulting in the suppression of the redox-dependent interaction between TGA4 and NPR1 as well as destabilization of TGA4. Consistently, transgenic Arabidopsis overexpressing TGA4-YFP with a S202A mutation displayed enhanced SA responses compared to the wild-type TGA4-YFP plants. Taken together, these results suggest a novel crosstalk mechanism by which BR signaling coordinates the SA responses mediated by redox-sensitive clade I TGAs.

关键词： brassinosteroid salicylic acid immune responses BIN2 clade I TGA