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Thermo-Mechanical, Physico-Chemical, Morphological, and Fire Characteristics of Eco-Friendly Particleboard Manufactured with Phosphorylated Lignin Addition

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Journal of Renewable Materials 2024年第7期12卷 1311-1341页

作者： Apri Heri Iswanto Harisyah Manurung Asma Sohail Lee Seng Hua Petar Antov Deded Sarip Nawawi Sarah Latifah Dewi Shafa Kayla Sukma Surya Kusumah Muhammad Adly Rahandi Lubis Linda MakovickáOsvaldová MohdHazwan Hussin Rangabhashiyam Selvasembian Lum Wei Chen Puji Rahmawati Nurcahyani Nam hun kim Widya Fatriasari Department of Forest Products Faculty of ForestryUniversitas Sumatera UtaraKampus USU Padang BulanMedanNorth Sumatra20155Indonesia Department of Chemistry Lahore College for Women UniversityLahore4444Pakistan Department of Wood Industry Faculty of Applied SciencesUniversiti Teknologi MARA(UiTM)Cawangan Pahang Kampus JengkaShah Alam26400Malaysia Faculty of Forest Industry University of ForestrySofia1797Bulgaria Department of Forest Product Faculty of Forestry and EnvironmentIPB UniversityBogor16680Indonesia Research Center for Biomass and Bioproducts National Research and Innovation Agency(BRIN)Cibinong16911Indonesia Department of Forest Engineering Faculty of Security EngineeringUniversity of ZilinaZilina01001Slovakia Materials Technology Research Group(MaTReC) School of Chemical SciencesUniversiti SainsMalaysiaMindenPenang11800Malaysia Department of Environmental Science and Engineering School of Engineering and SciencesSRM University-APAmaravatiAndhra Pradesh522240India Department of Bio and Natural Resources Faculty of Bioengineering and TechnologyUniversitiMalaysia KelantanJeliKelantan17600Malaysia Department of Forest Biomaterials Engineering College of Forest and Environmental SciencesKangwon National UniversityChuncheon24341Republic of Korea

Lignin,lignosulfonate,and synthesized phosphorylated lignosulfonate were introduced as greenﬁllers in citric acid-sucrose adhesives for bonding particleboard fabricated from areca leaf sheath(ALS).The characteristics of particleboards were compared to that of ultralow emitting formaldehyde(ULEF-UF).Theﬁllers derived from Eucalyptus ***-lignin were added forﬂame retardancy enhancement.10%of each lignin and modiﬁed lig-nin was added into the ULEF-UF and citric acid-sucrose bonded *** applied to particle-boards included thermal characteristics,X-ray diffraction analysis(XRD),morphological properties,Fourier transform infrared spectroscopy(FTIR),as well as physical,mechanical,andﬁre resistance characteristics of the laboratory-fabricated *** and modiﬁed lignin resulted in improved thermal stability of the composites bonded with ULEF-UF while the improvement in the particleboard bonded with citric acid-sucrose was not signiﬁ*** introduction ofﬁller exerted a higher inﬂuence on the UF-bonded particleboards compared to composites fabricated with citric ***,the presence of lignin,lignosulfonate,and phosphorylated lignosulfonate enhanced the mechanical strength of the ULEF-bonded particleboards,although their dimensional stability has ***,the use of lignin and lignosulfonate enhanced theﬁre resis-tance of the particleboards produced with lower observed weight *** laboratory particleboards exhibited satisfactoryﬁre resistance,attaining a V-0 rating in according to the UL-94 standard.

关键词： Modiﬁed lignin eco-friendly particleboard ﬁre and thermal properties citric acid-sucrose ultralow-emitting urea-formaldehyde resin

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Integrated guidance and control for damping augmented system via convex optimization

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Chinese Journal of Aeronautics 2022年第7期35卷 30-39页

作者： Bong-Gyun PARK Tae-hun kim The 1^(st)R&D Institute-4 Agency for Defense DevelopmentDaejeon 34186Republic of Korea

In this paper,an integrated guidance and control approach is presented to improve the performance of the missile *** approach includes damping augmented system with attitude rate feedback to decrease the oscillation during the homing phase for missiles with low *** addition,physical constraints,which can affect the performance of the missile interception,such as acceleration limit,seeker’s look angle,and look angle rate constraints are *** integrated guidance and control problem is formulated as a convex quadratic optimization problem with equality and inequality constraints,and the solution is obtained by a primal–dual interior point *** performance of the proposed method is verified through several numerical examples.

关键词： Convex optimization Damping augmented system Integrated guidance and control Physical constraint Primal-dual interior point method

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Ultrasensitive and Highly Stretchable Multiple‑Crosslinked Ionic Hydrogel Sensors with Long‑Term Stability

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Nano-Micro Letters 2023年第4期15卷 85-96页

作者： Jin‑Young Yu Seung Eon Moon Jeong hun kim Seong Min Kang Department of Mechanical Engineering Chungnam National UniversityDaejeon 34134Korea Emerging Nano‑Materials Research Section Electronics and Telecommunications Research InstituteDaejeon 305‑700Republic of Korea

Flexible hydrogels are receiving significant attention for their application in wearable ***,most hydrogel materials exhibit weak and one-time adhesion,low sensitivity,ice crystallization,water evaporation,and poor self-recovery,thereby limiting their application as *** issues are only partly addressed in previous ***,a multiplecrosslinked poly(2-(methacryloyloxy)ethyl)dimethyl-(3-sulfopropyl)ammonium hydroxide-co-acrylamide)(P(SBMA-co-AAm))multifunctional hydrogel is prepared via a one-pot synthesis method to overcome the aforementioned ***,ions,glycerol,and 2-(methacryloyloxy)ethyl)dimethyl-(3-sulfopropyl)ammonium hydroxide are incorporated to reduce the freezing point and improve the moisture retention *** proposed hydrogel is superior to existing hydrogels because it exhibits good stretchability(a strain of 2900%),self-healing properties,and transparency through effective energy dissipation in its dynamic crosslinked ***,2-(methacryloyloxy)ethyl)dimethyl-(3-sulfopropyl)ammonium hydroxide as a zwitterion monomer results in an excellent gauge factor of 43.4 at strains of 1300-1600%by improving the ion transportability and achieving a strong adhesion of 20.9 kPa owing to the dipole-dipole *** proposed hydrogel is promising for next-generation biomedical applications,such as soft robots,and health monitoring.

关键词： Hydrogel sensors Biocompatibility Multifunction High-sensitivity sensors Multiple-crosslink association

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Challenges for clinicians treating autoimmune pancreatitis:Current perspectives

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World Journal of Clinical Cases 2023年第1期11卷 30-46页

作者： Seong-hun kim Yun Chae Lee Hyung Ku Chon Division of Gastroenterology Department of Internal MedicineJeonbuk National University Medical SchoolJeonju 54907South Korea Department of Internal Medicine Institution of Wonkwang Medical ScienceWonkwang University School of Medicine and HospitalIksan 54538South Korea

Autoimmune pancreatitis(AIP)is a rare disease clinically characterized by obstructive jaundice,unintentional weight loss,acute pancreatitis,focal pancreatic mass,and *** is classified into two subtypes-type 1 and type 2-according to pathological findings,clinical features,and serology test results,but some cases may be defined as type not otherwise in the absence of pathological findings and inflammatory bowel *** address the differences in diagnostic criteria by country,standard diagnostic criteria for AIP were proposed in 2011 by an international consensus of expert *** diagnosis of AIP from pancreatic ductal adenocarcinoma is important but remains challenging for ***,all subtypes of AIP show dramatic response to steroid *** review discusses the current perspectives on the diagnosis and management of AIP in clinical practice.

关键词： Autoimmune pancreatitis Pancreatic cancer International consensus diagnostic criteria Steroid

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Long-lasting,reinforced electrical networking in a high-loading Li_(2)S cathode for high-performance lithium–sulfur batteries

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Carbon Energy 2023年第8期5卷 1-14页

作者： hun kim Kyeong-Jun Min Sangin Bang Jang-Yeon Hwang Jung Ho kim Chong SYoon Yang-Kook Sun Department of Energy Engineering Hanyang UniversitySeoulRepublic of Korea Department of Materials Science and Engineering Chonnam National UniversityGwangjuRepublic of Korea Institute for Superconducting&Electronic Materials(ISEM) Australian Institute of Innovative Materials(AIIM)University of WollongongNew South WalesNorth WollongongAustralia Department of Materials Science and Engineering Hanyang UniversitySeoulRepublic of Korea

Realizing a lithium sulfide(Li_(2)S)cathode with both high energy density and a long lifespan requires an innovative cathode design that maximizes electrochemical performance and resists electrode ***,a high-loading Li_(2)S-based cathode with micrometric Li_(2)S particles composed of two-dimensional graphene(Gr)and one-dimensional carbon nanotubes(CNTs)in a compact geometry is developed,and the role of CNTs in stable cycling of high-capacity Li–S batteries is *** a dimensionally combined carbon matrix,CNTs embedded within the Gr sheets create robust and sustainable electron diffusion pathways while suppressing the passivation of the active carbon *** a unique point,during the first charging process,the proposed cathode is fully activated through the direct conversion of Li_(2)S into S_(8) without inducing lithium polysulfide *** direct conversion of Li_(2)S into S_(8) in the composite cathode is ubiquitously investigated using the combined study of in situ Raman spectroscopy,in situ optical microscopy,and cryogenic transmission electron *** composite cathode demonstrates unprecedented electrochemical properties even with a high Li_(2)S loading of 10 mg cm^(–2);in particular,the practical and safe Li–S full cell coupled with a graphite anode shows ultra-long-term cycling stability over 800 cycles.

关键词： carbon nanotubes electrical network high energy high loading Li_(2)S cathode lithium-sulfur batteries

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Network Intrusion Detection in Internet of Blended Environment Using Ensemble of Heterogeneous Autoencoders(E-HAE)

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Computer Systems Science & Engineering 2023年第9期46卷 3261-3284页

作者： Lelisa Adeba Jilcha Deuk-hun kim Julian Jang-Jaccard Jin Kwak ISAA Lab. Department of AI Convergence NetworkAjou UniversitySuwon16499Korea ISAA Lab. Institute for Information and CommunicationAjou UniversitySuwon16499Korea Department of Computer Science and Information Technology Massey UniversityAuckland0745New Zealand Department of Cyber Security Ajou UniversitySuwon16499Korea

Contemporary attackers,mainly motivated by financial gain,consistently devise sophisticated penetration techniques to access important information or *** growing use of Internet of Things(IoT)technology in the contemporary convergence environment to connect to corporate networks and cloud-based applications only worsens this situation,as it facilitates multiple new attack vectors to emerge *** such,existing intrusion detection systems suffer from performance degradation mainly because of insufficient considerations and poorly modeled detection *** address this problem,we designed a blended threat detection approach,considering the possible impact and dimensionality of new attack surfaces due to the aforementioned *** collectively refer to the convergence of different technology sectors as the internet of blended *** proposed approach encompasses an ensemble of heterogeneous probabilistic autoencoders that leverage the corresponding advantages of a convolutional variational autoencoder and long short-term memory variational *** extensive experimental analysis conducted on the TON_IoT dataset demonstrated 96.02%detection ***,performance of the proposed approach was compared with various single model(autoencoder)-based network intrusion detection approaches:autoencoder,variational autoencoder,convolutional variational autoencoder,and long short-term memory variational *** proposed model outperformed all compared models,demonstrating F1-score improvements of 4.99%,2.25%,1.92%,and 3.69%,respectively.

关键词： Network intrusion detection anomaly detection TON_IoT dataset smart grid smart city smart factory digital healthcare autoencoder variational autoencoder LSTM convolutional variational autoencoder ensemble learning

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Classification of hepatobiliary scintigraphy patterns in segmented gallbladder according to anatomical discordance

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World Journal of Clinical Cases 2023年第11期11卷 2423-2434页

作者： Yun-Chae Lee Won-Sik Jung Chang-hun Lee Seong-hun kim Seung-Ok Lee Division of Gastroenterology Department of Internal MedicineJeonbuk National University Medical SchoolJeonju 54907JeonbukSouth Korea Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital Jeonju 54907JeonbukSouth Korea

BACKGROUND Hepatobiliary scintigraphy(HBS)is a useful diagnostic imaging technique that uses radiotracers to evaluate the function of the gallbladder(GB)and biliary *** segmented GB,some HBS images reveal a discordant GB boundary as compared to anatomical *** To evaluate the characteristics of HBS in segmented GB and determine the clinical relevance according to HBS *** A total of 268 patients with chronic cholecystitis,gallstones,or biliary colic symptoms who underwent HBS between 2011 and 2020 were *** GB was defined as segmental luminal narrowing of the GB body on computed tomography(CT)or magnetic resonance(MR)images,and HBS was examined 1 mo before or after CT or *** GB was classified into 3 types based on the filling and emptying patterns of the proximal and distal segments according to the characteristics of HBS images,and GB ejection fraction(GBEF)was identified:Type 1 was defined as a normal filling and emptying pattern;Type 2 was defined as an emptying defect on the distal segment;and Type 3 was defined as a filling defect in the distal *** Segmented GB accounted for 63 cases(23.5%),including 36 patients(57.1%)with Type 1,18 patients(28.6%)with Type 2,and 9 patients(14.3%)with Type 3 emptying ***,approximately 43%of HBS images showed a discordant pattern as compared to anatomical imaging of segmented *** there were no significant differences in clinical symptoms,rate of cholecystectomy,or pathological findings based on the type,most gallstones occurred in the distal *** GBEF was 62.50%±24.79%for Type 1,75.89%±17.21%for Type 2,and 88.56%±7.20%for Type *** 1 showed no difference in reported GBEF compared to the non-segmented GB group(62.50%±24.79%vs 67.40%±21.78%).In contrast,the reported GBEF was higher in Types 2 and 3 with defective emptying and filling when compared to Type 1(80.11%±15.70%vs 62.57%±24.79%;P=0.001).CONCLUSION In segmented GB,discordance i

关键词： Gallbladder Segmented Gallbladder emptying Radionuclide imaging Misdiagnosis Cholecystitis

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Morbidity analysis of left hepatic trisectionectomy for hepatobiliary disease and live donor

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Hepatobiliary & Pancreatic Diseases International 2022年第4期21卷 362-369页

作者： Young-In Yoon Sung-Gyu Lee Deok-Bog Moon Shin Hwang Ki-hun kim Hui-Ju kim Ki-Hoon Choi Division of Hepatobiliary Surgery and Liver Transplantation Department of SurgeryAsan Medical CenterUniversity of Ulsan College of Medicine388-1 Poongnap-dongSongpa-guSeoul 138-736Korea Department of Surgery Gold Coast University HospitalSouthportQLD 4215Australia

Background:Despite remarkable advances in surgical techniques and perioperative management,left hepatic trisectionectomy(LHT)remains a challenging procedure with a somewhat high postoperative morbidity rate compared with less-extensive *** study aimed to analyze the short-and long-term outcomes of LHT and identify factors associated with the postoperative morbidity of this technically demanding surgical ***:The medical records of 53 patients who underwent LHT between June 2005 and October 2019 at a single institution were retrospectively *** independent prognostic factor of postoperative morbidity was analyzed using the logistic regression ***:Hepatocellular carcinoma was the most common indication for surgery(n=21),followed by hilar cholangiocarcinoma(n=14),intrahepatic cholangiocarcinoma(n=10),and other pathologies(including colorectal liver metastasis,hepatolithiasis,gallbladder cancer,living donor,hemangioma,and multilocular biliary cyst;n=8).The rates of postoperative morbidities of Clavien-Dindo grade 3 or higher and 90-day mortality were 39.6% and 1.9%,*** 1-,3-,and 5-year overall survival rates were 81.1%,61.4%,and 44.6%,*** analysis revealed that preoperative jaundice[hazard ratio(HR)=6.15,95%confidence interval(CI):1.57-24.17,P=0.009]and operative time>420 min(HR=4.66,95%CI:1.27–17.17,P=0.021)were independent predictors of postoperative ***:The in-hospital mortality of LHT surgery can be minimalized by a reliable preoperative evaluation of liver function and selection of the dominant anatomic features of right posterior sector,active and appropriate preoperative management for obstructive cholangitis and compensatory hypertrophy of the future remnant posterior sector,and the experience of the surgeon.

关键词： Left hepatic trisectionectomy Major hepatectomy Liver neoplasms Survival rate Morbidity

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Regression of gastric endoscopic submucosal dissection induced polypoid nodular scar after Helicobacter pylori eradication:A case report

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World Journal of Clinical Cases 2022年第34期10卷 12793-12798页

作者： Byung Chul Jin Ae Ri Ahn Seong-hun kim Seung Young Seo Department of Internal Medicine Jeonbuk National University Medical SchoolResearch Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University HospitalJeonju 54907South Korea Department of Pathology Jeonbuk National University Medical SchoolResearch Institute of Clinical Medicine of Jeonbuk National UniversityBiomedical Research Institute of Jeonbuk National University Hospitaland Research Institute for Endocrine SciencesJeonju 56445South Korea

BACKGROUND Endoscopic submucosal dissection(ESD)is the treatment of choice for early gastric cancer and premalignant gastric *** some cases,ESD induced ulcer heals as a polypoid nodular scar(PNS).These scars may make the physicians raise several clinical implications such as post-ESD neoplastic *** SUMMARY We described a case of gastric ESD induced PNS which is regressed after Helicobacter pylori(***)eradication.A 58-year-old male patient was referred to the outpatient clinic for evaluation and treatment of gastric low-grade dysplasia(LGD).ESD was performed.A PNS was developed at the ESD *** endoscopic biopsy was done and there was no histological evidence of remnant tumor or recurrence but a hyperplastic mucosal *** PNS showed increase in size in follow-up endoscopy,and the biopsy specimen demonstrated *** *** eradication was done and the PNS was *** *** eradication is considerable for the regression of PNS if *** infesta tion is confirmed.

关键词： Polypoid nodular scar Helicobacter pylori Endoscopic submucosal dissection Case report

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MXene-based hybrid materials for electrochemical and photoelectrochemical H_(2) generation

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Journal of Energy Chemistry 2024年第6期93卷 111-125,I0004页

作者： Jun Young kim Seung hun Roh Chengkai Xia Uk Sim Jung Kyu kim School of Material Science and Engineering North University of ChinaTaiyuan 030051China School of Chemical Engineering Sungkyunkwan University(SKKU)2066Seobu-roJangan-guSuwon 16419Republic of Korea Hydrogen Energy Technology Laboratory Korea Institute of Energy Technology(KENTECH)NajuJeollanamdo 58330Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University(SKKU)2066Seobu-roJangan-guSuwon 16419Republic of Korea

The conversion of solar energy to produce clean hydrogen fuel through water splitting is an emerging strategy for efficiently storing solar energy in the form of solar *** aligns with the increasing global demand for the development of an ideal energy alternative to fossil fuels that does not emit greenhouse ***(EC) and photoelectrochemical(PEC) water splitting technologies have garnered significant attention worldwide for advanced hydrogen solar fuel production in recent *** achieve sustainable green H_(2) production,it is essential to create efficient catalyst materials that are low-cost and can replace expensive noble metal-based *** characteristics make them an ideal catalyst material for the ***-dimensional MXenes with M_(n+1)X_(n) structure have been identified as a promising option for EC and PEC water splitting due to their superior hydrophilicity,metal-like conductivity,large surface area,and adjustable surface ***,we present a summary of recent advancements in the synthesis and performance enhancement methods for MXene hybrid materials in hydrogen production through EC and PEC water ***,we examine the challenges and insights associated with the rational design of MXene-based hybrid materials to facilitate efficient water splitting for sustainable solar fuel production.

关键词： MXene Hybrid materials EC PEC HER OER Water splitting

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