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Stable immobilization of lithium polysulfides using three-dimensional ordered mesoporous Mn2O3 as the host material in lithium-sulfur batteries

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Carbon Energy 2024年第6期6卷 99-112页

作者： Sung Joon Park Yun Jeong Choi Hyun-seung Kim Min Joo Hong Hongjun Chang Janghyuk Moon young-Jun Kim Junyoung Mun Ki Jae Kim Department of Energy Science Sungkyunkwan UniversitySuwonGyeonggi-doRepublic of Korea Department of Energy Engineering Konkuk UniversitySeoulRepublic of Korea Advanced Batteries Research Center Korea Electronic Technology InstituteSeongnamRepublic of Korea Department of Future Energy Engineering Sungkyunkwan UniversitySuwonRepublic of Korea Department of Energy Systems Engineering Chung-Ang UniversitySeoulRepublic of Korea SKKU Advanced Institute of Nanotechnology Sungkyunkwan UniversitySuwonGyeonggi-doRepublic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Korea School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySuwonRepublic of Korea

Lithium-sulfur batteries(LSBs)have drawn significant attention owing to their high theoretical discharge capacity and energy ***,the dissolution of long-chain polysulfides into the electrolyte during the charge and discharge process(“shuttle effect”)results in fast capacity fading and inferior electrochemical *** this study,Mn_(2)O_(3)with an ordered mesoporous structure(OM-Mn_(2)O_(3))was designed as a cathode host for LSBs via KIT-6 hard templating,to effectively inhibit the polysulfide shuttle ***-Mn_(2)O_(3)offers numerous pores to confine sulfur and tightly anchor the dissolved polysulfides through the combined effects of strong polar-polar interactions,polysulfides,and sulfur chain *** OM-Mn_(2)O_(3)/S composite electrode delivered a discharge capacity of 561 mAh g-1 after 250 cycles at 0.5 C owing to the excellent performance of OM-Mn_(2)O_(3).Furthermore,it retained a discharge capacity of 628mA h g-1 even at a rate of 2 C,which was significantly higher than that of a pristine sulfur electrode(206mA h g-1).These findings provide a prospective strategy for designing cathode materials for high-performance LSBs.

关键词： host material lithium-sulfur battery ordered mesoporous structure shuttle effect transition-metal oxides

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Semantic Segmentation by Using Down-Sampling and Subpixel Convolution: DSSC-UNet

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Computers, Materials & Continua 2023年第4期75卷 683-696页

作者： young-Man Kwon Sunghoon Bae Dong-Keun chung Myung-Jae Lim Department of Medical IT Eulji University553Sanseong-daeroSujeong-guSeongnam-siGyeonggi-do13135Korea

Recently, semantic segmentation has been widely applied toimage processing, scene understanding, and many others. Especially, indeep learning-based semantic segmentation, the U-Net with convolutionalencoder-decoder architecture is a representative model which is proposed forimage segmentation in the biomedical field. It used max pooling operationfor reducing the size of image and making noise robust. However, instead ofreducing the complexity of the model, max pooling has the disadvantageof omitting some information about the image in reducing it. So, thispaper used two diagonal elements of down-sampling operation instead ofit. We think that the down-sampling feature maps have more informationintrinsically than max pooling feature maps because of keeping the Nyquisttheorem and extracting the latent information from them. In addition,this paper used two other diagonal elements for the skip connection. Indecoding, we used Subpixel Convolution rather than transposed convolutionto efficiently decode the encoded feature maps. Including all the ideas, thispaper proposed the new encoder-decoder model called Down-Sampling andSubpixel Convolution U-Net (DSSC-UNet). To prove the better performanceof the proposed model, this paper measured the performance of the UNetand DSSC-UNet on the Cityscapes. As a result, DSSC-UNet achieved89.6% Mean Intersection OverUnion (Mean-IoU) andU-Net achieved 85.6%Mean-IoU, confirming that DSSC-UNet achieved better performance.

关键词： Semantic segmentation encoder-decoder U-Net DSSC-UNet subpixel convolution down-sampling

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Anti-anger Effects of Herbal Medicine:A Mini-Review of Rat Studies

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Chinese Journal of Integrative Medicine 2022年第3期28卷 263-271页

作者： Chan-young Kwon Hyo-Weon Suh Jong Woo Kim Sun-Yong chung Department of Oriental Neuropsychiatry Dong-eui University College of Korean MedicineBusan(47227)Republic of Korea Department of Neuropsychiatry Kyung Hee University KoreanMedicine Hospital at Gangdong892 Dongnam-roGangdong-guSeoul(05278)Republic of Korea

Objective:To analyze the available data on the anti-anger effects of herbal medicines(HMs)as well as their underlying mechanisms in rat ***:From 6 electronic databases[PubMed,EMBASE,China National Knowledge Infrastructure(CNKI),Wanfang,Oriental Medicine Advanced Searching Integrated System(OASIS),and Research Information Sharing Service(RISS)],relevant animal experiments were searched by using"anger,""rats,"and"animal"as search *** last search was conducted on November 22,2019,and all experiments involving rat models of anger and treatment using HMs published until the date of the search were ***:A total of 24 studies with 16 kinds of HMs were *** studies have used the tail irritating method and"social isolation and resident intruder"method to establish anger *** to the included studies,the therapeutic mechanisms of HMs for anger regulation and important herbs by their frequency and/or preclinical evidence mainly incladed regulation of hemorheology(Bupleuri Radix,Paeoniae Radix Alba,and Glycyrrhizae Radix),regulation of sex hormones(Bupleuri Radix,Cyperi Rhizoma,and Paeoniae Radix Alba),regulation of neurotransmitters(Cyperi Rhizoma),regulation of anger-related genes(Bupleuri Radix,Glycyrrhizae Radix,and Paeoniae Radix Alba),and other ***,Liver(Gan)qi-smoothing herbs including Bupleuri Radix and Cyperi Rhizoma were the most frequently ***:This review found the frequent methods to establish an anger model,and major mechanisms of anti-anger effects of ***,some Liver qi-smoothing herbs have been frequently used to investigate the anti-anger effects of *** findings provide insight into the role and relevance of HMs in the field of anger management.

关键词： anger anger management therapy herbal medicine Korean traditional medicine

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Rationally designed graphene channels for real-time sodium ion detection for electronic tongue

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InfoMat 2023年第7期5卷 43-58页

作者： chung Won Lee Sang Eon Jun Seung Ju Kim Tae Hyung Lee Sol A.Lee jin Wook Yang jin Hyuk Cho Shinyoung Choi Cheol-joo Kim Soo young Kim Ho Won Jang Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulRepublic of Korea Department of Materials Science and Engineering Korea UniversitySeoulRepublic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)PohangRepublic of Korea Advanced Institute of Convergence Technology Seoul National UniversitySuwonRepublic of Korea

Monitoring taste-inducing ions and molecules continuously in liquids or solutions is of great considerable matter for the realization of the electronic tongue(E-tongue).Particularly from the five major tastes,the highly selective,sensitive detection of Na^(+)in real-time is *** is due to the saltiness of food is the key ingredient in most ***,existing Na^(+)detecting devices have relatively low performances of selectivity,sensitivity,and lack of on–off ***,conventional devices significantly deteriorate in capac-ity due to repetitive usage or lifetime shortage by degradation of the sensing ***,a graphene-based channel was rationally designed by the facile decoration of Calix[4]arene and Nafion to address this *** act as a receptor and a molecular sieve,respectively,to enhance selectivity and sensitivity and elon-gate the life expectancy of the *** device was merged with a microfluidic channel to control the injection and withdrawal of solutions to fulfill dynamic on–off *** fabricated device has highly selective,sensitive Na^(+)detection properties compared to other 10 molecule/ionic *** on–off functions of the device were available,also possesses a long lifespan of at least 220 ***,it can precisely discriminate real beverages containing Na^(+),which can be observed by principal component analysis *** features offer the possibility of ascending to a platform for E-tongues in near future.

关键词： electronic tongue graphene microfluidic channels Na^(+)sensors solution-gated field-effect transistors

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Metformin booster adipocyte-targeted gene therapy for the treatment of obesity and related metabolic syndromes

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Science China Chemistry 2022年第4期65卷 796-809页

作者： Jie Chen Jee young chung Huapan Fang Lin Lin Yong-Hee Kim Huayu Tian Xuesi Chen Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Department of Bioengineering Institute for Bioengineering and Biopharmaceutical ResearchBK 21 Plus Future Biopharmaceutical Human Resources Training and Research TeamHanyang University133-791 SeoulRepublic of Korea

Obesity has become an important public problem that endangers human conditions and urgently needs to be solved. However,most weight-loss drugs on the market have little effect and are accompanied by adverse effects such as strokes and heart ***, we construct an adipocyte-targeting polypeptide-based gene carrier consisting of an adipocyte-targeting peptide and ptoluylsulfonyl arginine-modified polylysine(ATS-PLL-RT), which can specifically bind to the prohibitin of mature *** further construct a short hairpin RNA(shRNA) to simultaneously silence fatty acid binding proteins 4 and 5(shFABP4/5).FABPs are molecular chaperones for fatty acid metabolism and storage in cells. Moreover, we introduce metformin for combined therapy. First, the metformin combination can effectively improve the efficiency of gene transfection. In addition, metformin itself has an alleviating effect on diet-induced obesity and relevant metabolic diseases. The combination treatment of obese mice with ATS-PLL-RT/shFABP4/5 and metformin achieves body weight reduction and metabolic recovery. This study provides a potentially effective strategy for the clinical treatment of obesity as well as mitigating obesity-induced metabolic syndromes.

关键词： FABP4/5 gene therapy insulin resistance metformin obesity

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Predicted pro-inflammatory hs-CRP score and non-alcoholic fatty liver disease

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Gastroenterology Report 2023年第1期11卷 462-468页

作者： Akinkunmi Paul Okekunle Jiyoung Youn Sihan Song Goh Eun chung Sun young Yang young Sun Kim Jung Eun Lee Department of Food and Nutrition College of Human EcologySeoul National UniversitySeoulKorea Research Institute of Human Ecology Seoul National UniversitySeoulKorea Healthcare System Gangnam Center Healthcare Research InstituteSeoul National University HospitalSeoulKorea

Background:Non-alcoholic fatty liver disease(NAFLD)is a major contributor to liver diseases globally,yet there are limited studies investigating the impact of diet and lifestyle factors on its *** study aimed to examine the association between the prevalence of NAFLD and predicted pro-inflammatory high-sensitivity C-reactive protein(hs-CRP)***:We included 1,076 Korean adults who underwent a medical examination at the Seoul National University Hospital Gangnam Healthcare Center in Korea between May and December 2011 and updated in *** predicted pro-inflammatory hs-CRP score was derived from pro-inflammatory demographic,lifestyle,dietary,and anthropometric factors,and NAFLD was diagnosed using liver ***-adjusted odds ratios(ORs)and 95%confidence intervals(CIs)of NAFLD odds according to predicted pro-inflammatory hs-CRP score were estimated using logistic regression at a two-sided P<***:Among the 1,076 participants,320 had *** multivariable-adjusted ORs and 95%CIs for NAFLD by tertiles of predicted pro-inflammatory hs-CRP score were 1.00,3.30(2.06,5.30),18.25(10.47,31.81;P<0.0001)in men and women combined,1.00,1.77(1.10,2.84),and 3.26(2.02,5.28;P<0.0001)among men only,and 1.00,3.03(1.39,6.62),and 16.71(7.05,39.63;P<0.0001)among women ***:Predicted pro-inflammatory hs-CRP score was associated with higher odds of *** dietary and lifestyle changes related to lower inflammation might be a valuable strategy for preventing NAFLD.

关键词： non-alcoholic fatty liver disease fatty liver high-sensitivity C-reactive protein pro-inflammation

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Sprayable nanomicelle hydrogels and inflammatory bowel disease patient cell chips for development of intestinal lesion-specific therapy

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Bioactive Materials 2022年第12期7卷 433-445页

作者： Hyo-jin Yoon Songhyun Lee Tae young Kim Seung Eun Yu Hye-Seon Kim young Shin chung Seyong chung Suji Park Yong Cheol Shin Eun Kyung Wang Jihye Noh Hyun Jung Kim Cheol Ryong Ku Hong Koh Chang-Soo Kim Joon-Sang Park young Min Shin Hak-Joon Sung Department of Medical Engineering Yonsei University College of MedicineSeoul03722Republic of Korea School of Electrical and Electronic Engineering Yonsei UniversitySeoul03722Republic of Korea Department of Obstetrics and Gynecology Institution of Women’s Life Medical ScienceSeverance HospitalYonsei University College of MedicineSeoul03722Republic of Korea Department of Biomedical Engineering The University of Texas at AustinAustinTX78712USA Department of Internal Medicine EndocrinologyInstitute of Endocrine ResearchYonsei University College of MedicineSeoul03722Republic of Korea Department of Pediatrics GastroenterologySeverance HospitalYonsei University College of MedicineSeoul03722Republic of Korea Department of Computer Engineering Hongik UniversitySeoul04066Republic of Korea Institute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonan31116Republic of Korea Numais Co. Ltd.Korea Seoul 04799Republic of Korea

All-in-one treatments represent a paradigm shift in future *** example,inflammatory bowel disease(IBD)is mainly diagnosed by endoscopy,which could be applied for not only on-site monitoring but also the intestinal lesion-targeted spray of injectable ***,molecular conjugation to the hydrogels would program both lesion-specific adhesion and drug-free *** study validated this concept of all-in-one treatment by first utilizing a well-known injectable hydrogel that underwent efficient solution-to-gel transition and nanomicelle formation as a translatable *** properties enabled spraying of the hydrogel onto the intestinal walls during ***,peptide conjugation to the hydrogel guided endoscopic monitoring of IBD progress upon adhesive gelation with subsequent moisturization of inflammatory lesions,specifically by *** peptide was designed to mimic the major component that mediates intestinal interaction with Bacillus subtilis flagellin during IBD ***,the peptide-guided efficient adhesion of the hydrogel nanomicelles onto Toll-like receptor 5(TLR5)as the main target of flagellin binding and *** peptide binding potently suppressed inflammatory signaling without drug loading,where TLR5 and Notch-1 operated collaboratively through downstream actions of tumor necrosis *** results were produced using a human colorectal cell line,clinical IBD patient cells,gut-on-a-chip,a mouse IBD model,and pig experiments to validate the translational utility.

关键词： Nanomicelle Injectable hydrogel Peptide display Theranostic All-in-one treatment Inflammatory bowel disease

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Passivation engineering via silica‐encapsulated quantum dots for highly sensitive photodetection

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Carbon Energy 2023年第9期5卷 49-62页

作者： Ji Yun Chun Byung Gi Kim jin young Kim Woongsik Jang Dong Hwan Wang School of Integrative Engineering Chung‐Ang UniversitySeoulRepublic of Korea

Organometal halide perovskites are promising semiconducting materials for photodetectors because of their favorable optoelectrical *** nanoscale perovskite materials such as quantum dots(QDs)show novel behavior,they have intrinsic stability *** this study,an effectively silane barrier-capped quantum dot(QD@APDEMS)is thinly applied onto a bulk perovskite photosensitive layer for use in ***@APDEMS is synthesized with a silane ligand with hydrophobic CH_(3)-terminal groups,resulting in excellent dispersibility and durability to enable effective *** introduction of the QD@APDEMS layer results in the formation of a lowdefect perovskite film with enlarged *** is attributed to the grain boundary interconnection effect via interaction between the functional groups of QD@APDEMS and uncoordinated Pb^(2+)in grain *** passivating the grain boundaries,where various trap sites are distributed,hole chargecarrier injection and shunt leakage can be ***,from the energy point of view,the deep highest occupied molecular orbital(HOMO)level of QD@APDEMS can work as a hole charge injection *** charge dynamics(generation,transfer,and recombination properties)and reduced trap density of QD@APDEMS are *** this perovskite film is used in a photodetector,the device performance(especially the detectivity)stands out among existing perovskites evaluated for energy sensing device applications.

关键词： grain boundary passivation perovskite quantum dots photodetectors photosensitive layers trap

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A case of unsuspected trans-orbital-cranial penetrating injury by a wooden chopstick in a one-year-old infant

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International Journal of Ophthalmology(English edition) 2022年第3期15卷 523-526页

作者： Yeon Woong chung Soon young Lee Tae Yoon La Department of Ophthalmology St.Vincent’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 16247Korea

Dear Editor,Transorbital penetrating injury is one emergency faced by ophthalmologists during primary care that requires special attention because it can lead to serious ophthalmic and neurological *** all head injuries, intracranial penetrating injuries occur at a low rate of 0.4%[1], and transorbital-cranial penetrating injuries are even more rare, but do occur more frequently in young children than in adults[2-3].

关键词： injuries infant orbital

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Comparison of laser iridotomy using short duration532-nm Nd: YAG laser (PASCAL) vs conventional laser in dark irides

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International Journal of Ophthalmology(English edition) 2015年第2期8卷 288-291页

作者： Hye jin chung Hae-young Park Su-young Kim HanGil Eye Hospital Department of Ophthalmology and Visual Science College of Medicine the Catholic University of Korea

AIM: To evaluate the outcome of laser iridotomy using532-nm Nd: YAG laser(PASCAL) with short pulse duration and Nd: YAG laser compared to conventional combined laser ***: Retrospective, nonrandomized, comparative case series. Forty-five eyes of 34 patients underwent laser iridotomy. Twenty-two eyes underwent iridotomy using short duration PASCAL and Nd: YAG laser, and 23 eyes underwent iridotomy using conventional combined laser method. The average settings of PASCAL were60 μm and 700-900 m W with a short duration of 0.01 s to reduce the total applied energy. The conventional laser was 50 μm and 700-900 m W for 0.1s. After photocoagulation with these laser, the Nd: YAG laser was added in each group. Endothelial cell counts of preiridotomy and 2mo after iridotomy were measured and ***: All eyes completed iridotomy *** total energy used in the PASCAL group was 1.85 ±1.17 J. Compared to conventional laser 13.25 ±1.67 J, the energy used was very small due to the short exposure time of PASCAL. Endothelial cell counts were reduced by0.88% in the PASCAL group and 6.72% in the conventional laser group(P =0.044). The change in corneal endothelial cell counts before and after iridotomy was significant in conventional combined laser iridotomy group(P =0.004).CONCLUSION: Combined PASCAL and Nd:YAG laseriridotomy is an effective and safe technique in the dark brown irides of Asians. Furthermore, the short duration of exposure in PASCAL offers the advantages of reducing the total energy used and minimizing the corneal damage.

关键词： endothelium laser iridotomy 532-nm Nd: YAG laser

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