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Review of MXenes as new nanomaterials for energy storage/delivery and selected environmental applications

Nano Research 2019年第3期12卷 471-487页

作者： Byung-Moon jun Sewoon Kim Jiyong Heo Chang Min Park Namguk Her Min Jang Yi Huang Jonghun Han Yeomin yoon Department of Civil and Environmental Engineering University of South Carolina Columbia 300 Main Street SC 29208 USA Department of Civil and Environmerttal Engineering Korea Army Academy at Young-Cheon 495 Hogook-ro Kokyungmeon Young-Cheon Gyeongbuk 38900 Republic of Korea Department of Environmental Engineering Kyungpook National University 80 Daehak-ro Buk-gu Daegu 41566 Republic of Korea Department of Environmental Engineering Kwangwoon University 447-1 Wolgye-Dong Nowon-Gu Seoul 01897 Republic of Korea School of Engineering Institute for Materials & Processes (IMP) The University of Edinburgh Colin Maclaurin Road Edinburgh EH9 3DW Scotland UK

Energy and environmental issues presently attract a great deal of scientific attention. Recently, two-dimensional MXenes and MXene-based nanomaterials have attracted increasing interest because of their unique properties (e.g., remarkable safety, a very large interlayer spacing, environmental flexibility, a large surface area, and thermal conductivity). In 2011, multilayered MXenes (Ti3C2Tx, a new family of two-dimensional (2D) materials) produced by etching an A layer from a MAX phase of Ti3AlC2, were first described by researchers at Drexel University. The term “MXene” was coined to distinguish this new family of 2D materials from graphene, and applies to both the original MAX phases and MXenes fabricated from them. We present a comprehensive review of recent studies on energy and environmental applications of MXene and MXene-based nanomaterials, including energy conversion and storage, adsorption, membrane, photocatalysis, and antimicrobial. Future research needs are discussed briefly with current challenges that must be overcome before we completely understand the extraordinary properties of MXene and MXene-based nanomaterials.

关键词： MXenes MXene-based nanomaterials energy storage environment applications

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Formation of carbon and oxygen rich surface layer on high purity magnesium by atmospheric carbon dioxide plasma

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Journal of Magnesium and Alloys 2023年第1期11卷 88-99页

作者： Gyoung G.Jang Sinchul Yeom Jong K.Keum Mina yoon Harry III Meyer Yi-Feng Su Jiheon jun Manufacturing Science Division Oak Ridge National Laboratory(ORNL)One Bethel Valley RoadPO Box 2008MS6054Oak RidgeTN 37831United States Material Science and Technologies Division Oak Ridge National Laboratory(ORNL)One Bethel Valley RoadOak RidgeTN 37831United States Neutron Scattering Division&Center for Nanophase Materials Sciences ORNLOne Bethel Valley RoadOak RidgeTN 37831United States Chemical Sciences Division ORNLOne Bethel Valley RoadOak RidgeTN 37831United States

Carbon and oxygen-rich corrosion barrier layer formed on Mg by a simple and scalable CO_(2) atmospheric plasma(CO_(2)-AP)*** reactive CO_(2)-AP interacts with the Mg surface and forms a unique layered structure with the top MgCO_(3)/MgO-intermixed particulates pillars and the bottom dense *** surface features were simultaneously formed on the nano-/micro-structured MgO layer by carbonate molecules,plasma-active CO_(2) molecules,and/or other volatile organic compounds on the nano-/micro-structured MgO particle *** resulting surfaces after CO_(2)-AP were either hydrophobic or hydrophilic and exhibited lower anodic current or high resistance for Mg *** the hydrophobic surfaces of CO_(2)-AP treated Mg,molecular dynamic simulations were performed to understand the origin of hydrophobicity and identified that the amorphous carbon layers formed on the Mg surface are the *** environmentally benign abundant-gas-based process enables the cost reduction associated with waste treatment,generation of by-product,and supply of raw material.

关键词： Atmospheric plasma Magnesium Corrosion protection Surface modification

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Fucoidan protects hepatocytes from apoptosis and inhibits invasion of hepatocellular carcinoma by up-regulating p42/44 MAPK-dependent NDRG-1/CAP43

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Acta Pharmaceutica Sinica B 2015年第6期5卷 544-553页

作者： Yuri Cho jung-Hwan yoon Jeong-ju Yoo Minjong Lee Dong Hyeon Lee Eun Ju Cho Jeong-Hoon Lee Su Jong Yu yoon jun Kim Chung Yong Kim Department of Internal Medicine and Liver Research Institute Seoul National University College of Medicine

Fucoidan is a traditional Chinese medicine suggested to possess anti-tumor *** this study the anti-metastatic effects of fucoidan were investigated in vitro in human hepatocellular carcinoma(HCC) cells(Huh-7 and SNU-761) under normoxic and hypoxic conditions and in vivo using a distant liver metastasis model involving injection of MH134 cells into spleen via the portal *** ability to protect hepatocytes against bile acid(BA)-induced apoptosis was investigated in primary *** was found to suppress the invasion of HCC cells through up-regulation of p42/44 MAPKdependent NDRG-1/CAP43 and partly,under normoxic conditions,through up-regulation of p42/44MAPK-dependent VMP-1 *** also significantly decreased liver metastasis in *** regards its hepatoprotective effect,fucoidan decreased BA-induced hepatocyte apoptosis as shown by the attenuation of caspase-8,and-7 cleavages and suppression of the mobilization of caspase-8 and Fas associated death domain(FADD) into the death-inducing signaling *** summary,fucoidandisplays inhibitory effects on proliferation of HCC cells and protective effects on *** results suggest fucoidan is a potent suppressor of tumor invasion with hepatoprotective effects.

关键词： Fucoidan Hepatocellular carcinoma Invasion Hypoxia Hepatoprotective Cultured hepatocyte NDRG-1/CAP43 VMP-1

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Biotechnological valorization of algal biomass:an overview

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Systems Microbiology and Biomanufacturing 2021年第2期1卷 131-141页

作者： A.Naresh Kumar Jeong-jun yoon Gopalakrishnan Kumar Sang-Hyoun Kim School of Civil and Environmental Engineering Yonsei UniversitySeoul 03722Republic of Korea Intelligent Sustainable Materials R&BD Group Korea Institute of Industrial Technology(KITECH)CheonanChungnam 31056Republic of Korea

Algal biomass has significant advantages over terrestrial plants in terms of CO2 sequestration,biomass productivity,waste-water treatment along with multiple biobased products *** versatility and high carbohydrate content of microalgal biomass act as a potential alternative feedstock to fossil resources and contribute towards the biobased economy *** biomass utilization would play a key role to establish sustainable bioprocess development and technology translation to the industrial *** this framework,the present review discusses the renewable resource potential of algal biomass and its complete utilization for multiple biobased products synthesis in a closed-loop biorefinery *** methods are discussed to obtain high biomass growth and pretreatments to obtain the maximum sugars ***,combined bioprocesses were discussed for the production of biohydrogen,biomethane,bioethanol,short-chain fatty acids(SCFA),medium-chain fatty acids(MCFA),and biopolymers in a closed-loop approach.

关键词： Algal biomass Biorefinery Bioeconomy Closed loop Biohydrogen

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Food intolerance and skin prick test in treated and untreated irritable bowel syndrome

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World Journal of Gastroenterology 2006年第15期12卷 2382-2387页

作者： Dae-Won jun Oh-Young Lee Ho-Joo yoon Seok-Hwa Lee Hang-Lak Lee Ho-Soon Choi Byung-Chul yoon Min-Ho Lee Dong-Hoo Lee Sang-Hoen Cho Department of Internal Medicine College of Medicine Hanyang UniversitySeoulKorea Department of Food and Nutrition College of Human Ecology Hanyang UniversitySeoulKorea Department of Internal Medicine College of Medicine Seoul National UniversitySeoulSouth Korea

AIM： To correlate the clinical features of treated and untreated patients with irritable bowel syndrome （IBS） to the results of skin prick test （SPT） for food and inhalant allergens. METHODS： We recruited 105 subjects to form three different target groups： treated group （n=44） undergoing treatment for IBS, untreated group （n =31） meeting the Rome Ⅱ criteria without treatment for IBS, control group （n = 30） with no IBS symptoms. RESULTS： SPT results were different among the three groups in which SPT was positive in 17 （38.6%） treated patients, in 5 （16.1%） untreated patients and in 1 （3.3%） control （P〈0.01）. The number of positive SPTs was greater in the IBS group than in the control group （P〈 0.001）. The number of positive food SPTs was higher in the treated IBS group than in the untreated IBS group （P= 0.03）. CONCLUSION： Positive food SPT is higher in IBS patients than in controls.

关键词： Irritable bowel syndrome Skin prick test Food allergy

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Flower morphology of Allium(Amaryllidaceae)and its systematic significance

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Plant Diversity 2024年第1期46卷 3-27页

作者： Ju Eun Jang Shukherdorj Baasanmunkh Nudkhuu Nyamgerel Seung-yoon Oh jun-Ho Song Ziyoviddin Yusupov Komijlon Tojibaev Hyeok Jae Choi Department of Biology and Chemistry Changwon National UniversityChangwon51140Republic of Korea Department of Forest Biodiversity and Herbarium Korea National ArboretumPocheon11186Republic of Korea Department of Biology Chungbuk National UniversityCheongju28644Republic of Korea International Joint Lab for Molecular Phylogeny and Biogeography Institute of BotanyAcademy of Sciences of UzbekistanTashkent100125Uzbekistan

Allium is a complicated genus that includes approximately 1000 *** its morphology is well studied,the taxonomic importance of many morphological traits,including floral traits,are poorly ***,we examined and measured the floral characteristics of 87 accessions of 74 Allium taxa(belonging to 30 sections and nine subgenera)from Central to Eastern Asian *** then examined the taxonomic relationships between select flower characteristics and a phylogenetic tree based on ITS *** results confirm that floral morphology provides key taxonomic information to assess species delimitation in *** found that perianth color is an important characteristic within the ***,Polyprason,and *** ***,Cepa,and Rhizirideum,significant characteristics include ovary shape,perianth shape,and inner tepal *** species in ***,the key taxonomic character is ovule number(only one ovule in per locule).In the ***,Cepa,Polyprason,and Reticulatobulbosa,which belong to the third evolutionary line of Allium,hood-like appendages occur in the ovary,although these do not occur in *** results also indicated that the flower morphology of several species in some sections are not clearly distinguished,e.g.,***(***)and ***(***).This study provides detailed photographs and descriptions of floral characteristics and information on general distributions,habitats,and phenology of the studied taxa.

关键词： Allium Flower morphology Pistil character Statistical analysis Significant characteristic Species level

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A systematic correlation between morphology of porous carbon cathode and electrolyte in lithium-sulfur battery

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Journal of Energy Chemistry 2021年第10期30卷 561-573,I0014页

作者： Jihyeon Park Seoyoung yoon Seoyeah Oh Jiyoon Kim Dongjun Kim Geonho Kim Jiyeon Lee Myeong jun Song Ilto Kim Kwonnam Sohn Jiwon Kim School of Integrated Technology College of EngineeringYonsei University85 Songdogwahak-roYeonsu-guIncheon 21983Republic of Korea Integrated Science and Engineering Division Underwood International CollegeYonsei University85 Songdogwahak-roYeonsu-guIncheon 21983Republic of Korea Integrated Biotechnology and Translational Medicine Graduate SchoolYonsei University85 Songdogwahak-roYeonsu-guIncheon 21983Republic of Korea LG Chem. LG Science Park30 Magokjungang 10-roGangseo-guSeoul 07796Republic of Korea

Porous carbon has been applied for lithium-sulfur battery cathodes,and carbonized metal-organic framework(MOF)is advantageous in tuning the ***,we have systematically synthesized water-distorted MOF(WDM)derived porous carbon via controlling the proportion of both water in a mixed solvent(dimethylformamide and water)and ligand in MOF-5 precursors(metal and ligand),which is categorized by its morphology(*** stone(closed),Tassel(open)and Intermediate(semi-open)).For example,decrease in water and increase in ligand content induce Cracked stone WDMs which showed the highest specific surface area(2742-2990 m^(2)/g)and pore volume(2.81-3.28 cm^(3)/g)after *** effect of carbonized WDMs(CWDMs)on battery performance was examined by introducing electrolytes with different sulfur reduction mechanisms(***/DME and ACN_(2) LiTFSITTE):Closed framework effectively confines polysulfide,whereas open framework enhances electrolyte *** initial capacities of the batteries were in the following order:Cracked stone>Intermediate>Tassel for DOL/DME and Intermediate>Tassel>Cracked stone for ACN_(2) *** note,Intermediate CWDM exhibited the highest initial capacity and retained capacity after 100 cycles(1398 and 747 mAh/g)in ACN_(2) LiTFSI-TTE electrolyte having advantages from both open and closed *** sum,we could correlate cathode morphology(openness and pore structure)and electrolyte type(*** solubility)with lithium-sulfur battery performance.

关键词： Lithium-sulfur battery Metal-organic framework Hierarchical porous carbon cathode Morphology control Electrolyte Lithium polysulfide solubility

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Clinical outcomes and safety of high-resolution manometry guided superficial partial circular muscle myotomy in per-oral endoscopic myotomy for Jackhammer esophagus: Two cases report

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World Journal of Clinical Cases 2019年第16期7卷 2322-2329页

作者： Youn I Choi Kyoung Oh Kim Dong Kyun Park jun-Won Chung yoon Jae Kim Kwang An Kwon Department of Gastroenterology Gil Medical Center Gachon University

BACKGROUND Jack hammer esophagus is a relatively rare disease and to date,there is no dramatic treatment ***,conventional per-oral endoscopic myotomy (POEM) have expanded their area into Jackhammer ***,several complications such as post procedure motility disorders (e.g.,passage disturbance) are issues after *** overcome these issues,we here introduced high-resolution manometry (HRM)-guided superficial partial circular muscle myotomy,which involves cutting only the superficial layer of the esophageal circular *** SUMMARY We report two cases of patients with Jackhammer esophagus who were treated with HRM-guided extremely superficial partial circular muscle myotomy during *** 1 was a 53-year-old female with medication-refractory odynophagia and case 2 was a 47-year-old man who presented with chest *** were diagnosed with Jackhammer esophagus using HRM,and the hypercontractile segments of the esophagus were ***-guided extremely superficial partial circular muscle myotomy was performed while preserving the lower esophageal ***,the circular and longitudinal muscle layers are preserved but hypercontractile movements are reduced,even after ***’ clinical symptoms dramatically improved right after POEM,and 6-mo follow-up HRM revealed completely resolved *** a 1-year follow-up period,patients were still in good health and remained symptom *** HRM-guided superficial partial circular muscle myotomy may be a promising alternative to conventional POEM for treating Jackhammer esophagus with improved efficacy.

关键词： Jackhammer esophagus Hypercontractile Partial circular muscle myotomy Case report

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Inhibition of CD82 improves colitis by increasing NLRP3 deubiquitination by BRCC3

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Cellular & Molecular Immunology 2023年第2期20卷 189-200页

作者： Jae-Sung Kim Hyo Keun Kim Joongho Lee Sein Jang Euni Cho Seok-jun Mun Seokhyun yoon Chul-Su Yang Department of Bionano Technology Hanyang UniversitySeoul04673Korea Institute of Natural Science&Technology Hanyang UniversityAnsan15588Korea Department of Molecular and Life Science Hanyang UniversityAnsan15588Korea Center for Bionano Intelligence Education and Research Ansan15588Korea Department of Computer Science College of SW ConvergenceDankook UniversityYongin16890Korea Department of Electronics&Electrical Engineering College of EngineeringDankook UniversityYongin16890Korea

CD82 is a transmembrane protein that is involved in cancer suppression and activates immune cells;however, information on the NLRP3 inflammasome is limited. Herein, we show that although CD82 suppressed the activation of the NLRP3 inflammasome in vivo and in vitro, CD82 deficiency decreased the severity of colitis in mice. Furthermore, two binding partners of CD82, NLRP3 and BRCC3, were identified. CD82 binding to these partners increased the degradation of NLRP3 by blocking BRCC3-dependent K63-specific deubiquitination. Previous studies have shown that CD82-specific bacteria in the colon microbiota called Bacteroides vulgatus (B. vulgatus) regulated the expression of CD82 and promoted the activation of the NLRP3 inflammasome. Accordingly, we observed that B. vulgatus administration increased mouse survival by mediating CD82 expression and activating NLRP3 in mice with colitis. Overall, this study showed that CD82 suppression reduced the pathogenesis of colitis by elevating the activation of the NLRP3 inflammasome through BRCC3-dependent K63 deubiquitination. Based on our findings, we propose that B. vulgatus is a novel therapeutic candidate for colitis.

关键词： CD82 NLRP3 BRCC3 Colitis Inflammation

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Early extrahepatic recurrence as a pivotal factor for survival after hepatocellular carcinoma resection:A 15-year observational study

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World Journal of Gastroenterology 2022年第36期28卷 5351-5363页

作者： Jae Hyun yoon Sung Kyu Choi Sung Bum Cho Hee Joon Kim Yang Seok Ko Chung Hwan jun Department of Gastroenterology and Hepatology Chonnam National University Hospital and College of MedicineGwangju 61469South Korea Department of Gastroenterology and Hepatology Hwasun Chonnam National University Hospital and College of MedicineHwasun 58128South Korea Department of Surgery Chonnam National University Hospital and College of MedicineGwangju 61469South Korea Department of Surgery Hwasun Chonnam National University Hospital and College of MedicineHwasun 58128South Korea Department of Internal Medicine Mokpo Hankook HospitalMokpo 58643South Korea

BACKGROUND Surgical resection is one of the most widely used modalities for the treatment of hepatocellular carcinoma(HCC).Early extrahepatic recurrence(EHR)of HCC after surgical resection is considered to be closely associated with poor ***,data regarding risk factors and survival outcomes of early EHR after surgical resection remain *** To investigate the clinical features and risk factors of early EHR and elucidate its association with survival *** From January 2004 to December 2019,we enrolled treatment-naïve patients who were≥18 years and underwent surgical resection for HCC in two tertiary academic *** excluding patients with tumor types other than HCC and/or ineligible data,this retrospective study finally included 779 *** resection of HCC was performed according to the physicians’decisions and the EHR was diagnosed based on contrast-enhanced computed tomography or magnetic resonance imaging,and pathologic confirmation was performed in selected *** Cox regression analysis was performed to identify the variables associated with *** Early EHR within 2 years after surgery was diagnosed in 9.5%of patients during a median followup period of 4.4 *** recurrence-free survival period was 5.2 mo,and the median time to EHR was 8.8 mo in patients with early *** 52.7%of patients with early EHR,EHR occurred as the first recurrence of HCC after surgical *** multivariate analysis,serum albumin100 U/L,surgical margin involvement,venous and/or lymphatic involvement,satellite nodules,tumor necrosis detected by pathology,tumor size≥7 cm,and macrovascular invasion were determined as risk factors associated with early *** sub-categorizing the patients according to the number of risk factors,the rates of both EHR and survival showed a significant correlation with the risk of early ***,multivariate analysis revealed that early E

关键词： Early extrahepatic recurrence Hepatocellular carcinoma Prognosis Surgery Survival

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