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Innovative technique of needlescopic grasper-assisted single-incision laparoscopic common bile duct exploration:A comparative study

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World Journal of Gastroenterology 2015年第45期21卷 12857-12864页

作者： Say-June kim Kee-Hwan kim Chang-Hyeok An jeong-Soo kim Daejeon St.Mary’s Hospital College of MedicineThe Catholic University of Korea Department of Surgery Uijeongbu St. Mary’s HospitalCollege of MedicineThe Catholic University of Korea

AIM: To investigate the safety and feasibility of needlescopic grasper-assisted single-incision laparoscopic common bile duct exploration(n SIL-CBDE) by comparing the surgical outcomes of this technique with those of conventional laparoscopic CBDE(CL-CBDE).METHODS: We retrospectively analyzed the clinical data of patients who underwent CL-CBDE or n SILCBDE for the treatment of common bile duct(CBD) stones between January 2000 and December 2014. For performing n SIL-CBDE, a needlescopic grasper was also inserted through a direct puncture below the right subcostal line after introducing a single-port through the umbilicus. The needlescopic grasper helped obtain the critical view of safety by retracting the gallbladder laterally and by preventing crossing or conflict between laparoscopic instruments. The gallbladder was then partially dissected from the liver bed and used for retraction. CBD stones were usually extracted through a longitudinal supraduodenal choledochotomy, mostly using flushing a copious amount of normal saline througha ureteral catheter. Afterward, for the certification of CBD clearance, CBDE was performed mostly using a flexible choledochoscope. The choledochotomy site was primarily closed without using a T-tube, and simultaneous cholecystectomies were ***: During the study period, 40 patients underwent laparoscopic CBDE. Of these patients, 20 underwent CL-CBDE and 20 underwent n SIL-CBDE. The operative time for n SIL-CBDE was significantly longer than that for CL-CBDE(238 ± 76 min vs 192 ± 39 min, P = 0.007). The stone clearance rate was 100%(40/40) in both groups. Postoperatively, the n SIL-CBDE group required less intravenous analgesic(pethidine)(46.5 ± 63.5 mg/kg vs 92.5 ± 120.1 mg/kg, P = 0.010) and had a shorter hospital stay than the CL-CBDE group(3.8 ± 2.0 d vs 5.1 ± 1.7 d, P = 0.010). There was no significant difference in the incidence of postoperative complications between the two ***: The results of this study

关键词： Choledocholithiasis Choledochotomy Common bile duc

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Hydrogen spillover in nonreducible oxides:Mechanism and catalytic utilization

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Nano Research 2022年第12期15卷 10357-10365页

作者： Songhyun Lee Hyungjun kim Ryong Ryoo jeong young Park Minkee Choi Charles D.Davidson School of Chemical Engineering Purdue UniversityWest LafayetteIndiana47907USA Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea Department of Chemistry Korea Advanced Institute of Science and TechnologyDaejeon34141Republic of Korea KENTECH Laboratory for Chemical Environmental and Climate TechnologyKorea Institute of Energy Technology(KENTECH)200 Hyeoksin-roNaju58330Republic of Korea Center for Nanomaterials and Chemical Reactions Institute for Basic Science(IBS)Daejeon34141Republic of Korea

Hydrogen(H)spillover in nonreducible oxides such as zeolites and Al2O3 has been a highly controversial phenomenon in heterogeneous *** industrial catalysts are predominantly prepared using these materials as supports,it is important to understand the mechanism and catalytic functions of H spillover on their *** the past decade,fundamental studies on zeolite-encapsulated metal catalysts have revealed that H spillover and reverse spillover can be utilized in the design of hydrogenation and dehydrogenation catalysts with improved *** experimental and theoretical studies have indicated that H spillover can occur in nonreducible oxides when they possess substantial acid sites that aid the surface migration of active *** the present review,we will discuss the possible mechanisms of H spillover in nonreducible oxides and the unique opportunities of using this phenomenon for the design of advanced hydroprocessing catalysts.

关键词： hydrogen spillover nonreducible oxides zeolites hydroprocessing catalysts

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Boost Up the Mechanical and Electrical Property of CNT Fibers by Governing Lyotropic Liquid Crystalline Mesophases with Aramid Polymers for Robust Lightweight Wiring Applications

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Advanced Fiber Materials 2023年第2期5卷 514-526页

作者： Ki‑Hyun Ryu jeong‑Gil kim Dongju Lee Seo Gyun kim Bon‑Cheol Ku Jun yeon Hwang Kwang‑Un jeong Nam Dong kim Dae‑yoon kim Functional Composite Materials Research Center Korea Institute of Science and TechnologyWanju 55324Republic of Korea Carbon Composite Materials Research Center Korea Institute of Science and TechnologyWanju 55324Republic of Korea Department of Polymer‑Nano Science and Technology Department of Nano Convergence EngineeringJeonbuk National UniversityJeonju 54896Republic of Korea Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea

Monofilament type of polyaromatic amide(PA)and carbon nanotube(CNT)composite fibers is presented.A concept of a lyotropic liquid crystal(LLC)constructed via a spontaneous self-assembly is introduced to mitigate the extremely low com-patibility between PA and *** approaches provide an effective co-processing route of PA and CNT simultaneously to fabricate the uniform,continuous,and reliable composite fibers through a ***,the addition of a small amount PA into the dope solution of CNT governs the LLC mesophase not only in a spinneret stage but also in a coagulant ***,the developed PA/CNT composite fibers have the high uniaxial orientational order and the close interfacial packing compared to the pure CNT *** PA/CNT composite fibers achieve the outstanding tensile strength,electrical conductivity,and electrochemical response,while maintaining a *** also exhibit the chemical,mechanical,and thermal *** of these advantages can make flexible,sewable,and washable PA/CNT composite fibers ideal nanocomposite materials for use in next-generation information and energy transporting system by replacing conventional metal electrical conductors.

关键词： Carbon nanotube Aramid polymer Liquid crystal Composite fiber Electrical wire

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Thermally-curable nanocomposite printing for the scalable manufacturing of dielectric metasurfaces

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Microsystems & Nanoengineering 2022年第4期8卷 73-80页

作者： Wonjoong kim Gwanho yoon Joohoon kim Heonyeong jeong yeseul kim Hojung Choi Trevon Badloe Junsuk Rho Heon Lee Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Manufacturing Systems and Design Engineering Seoul National University of Science and TechnologySeoul 01811Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea POSCO-POSTECHRIST Convergence Research Center for Flat Optics and Metaphotonics Pohang 37673Republic of Korea National Institute of Nanomaterials Technology(NINT) Pohang 37673Republic of Korea

Metasurfaces consisting of artificially designed meta-atoms have been popularized recently due to their advantages of amplitude and phase of light ***,the electron beam lithography method for metasurface fabrication has high cost and low throughput,which results in a limitation for the fabrication of *** this study,nanocomposite printing technology is used to fabricate high-efficiency metasurfaces with low *** demonstrate the efficiency of the proposed fabrication method,a metahologram is designed and fabricated using a *** metahologram exhibits conversion efficiencies of 48%and 35%at wavelengths of 532 and 635 nm,*** nanocomposite is composed of polymers with nanoparticles,so durability tests are also performed to evaluate the effects of temperature and humidity on the *** test verifies that at temperatures below the glass transition temperature of the base resin,the nanostructures do not collapse,so the efficiency of the metasurfaces remains almost the *** surrounding humidity does not affect the nanostructures at ***,the durability of the nanocomposite metasurfaces can be further enhanced by replacing the base resin,and this nanocomposite printing method will facilitate practical metasurface use at low cost.

关键词： surfaces durability resin

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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

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Advanced heterolytic H_(2) adsorption of K-added Ru/MgO catalysts for accelerating hydrogen storage into aromatic benzyltoluenes

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Journal of Energy Chemistry 2022年第8期31卷 333-343,I0009页

作者： Tae Wan kim Hwiram jeong yeongin Jo Dongun kim Ji Hoon Park Seok Ki kim young-Woong Suh Department of Chemical Engineering Hanyang UniversitySeoul 04763Republic of Korea Environmental&Sustainable Resources Research Center Korea Research Institute of Chemical TechnologyDaejeon 34114Republic of Korea Department of Chemical Engineering Ajou UniversitySuwon 16499Republic of Korea

Herein,we report a highly active K-added Ru/MgO catalyst for hydrogen storage into aromatic benzyltoluenes at low temperatures to advance liquid organic hydrogen carrier *** hydrogenation activity of Ru/K/MgO catalysts exhibits a volcano-shaped dependence on the K content at the maximum with 0.02 wt%.This is in good agreement with the strength and capacity of H_(2) adsorption derived from basicity,despite a gradual decrease in the textural property and the corresponding increase in the Ru particle size with increasing the K *** functional theory calculations show that heterolytic hydrogen adsorption properties(strength and polarization)are facilitated up to a specific density of K on the Ru–MgO interface and excessive K suppresses heterolytic H_(2) adsorption by direct interaction between K and hydrogen,assuring the hydrogenation activity and H_(2) adsorption capability of Ru/K/MgO ***,the Ru/K/MgO catalyst,when K is added in an optimal amount,is highly effective to accelerate hydrogen storage kinetics at low temperatures owing to the enhanced heterolytic H_(2) adsorption.

关键词： Chemical hydrogen storage Supported Ru catalysts Ru–MgO interface Heterolytic H_(2)adsorption Charge transfer Potassium promotion

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Progress in light-to-frequency conversion circuits based on low dimensional semiconductors

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Nano Research 2021年第9期14卷 2938-2964页

作者： Seung Gi Seo Seung yeob kim Jinheon jeong Sung Hun Jin Department of Electronic Engineering Incheon National UniversityAcademy-ro 119Yeongsu-guIncheon 22012Republic of Korea

As the scaling down of Si devices in the range less than few nm has been expedited up to a physical limit of Si,low dimensional materials have been regarded as one of next generation *** a variety of applications,studies on photodetectors have been actively investigated with their novel optical properties as well as astonishing electrical ***,most of research has focused on single device-type photodetector(i.e.,photo-diode or photo-transistor).Contrary to common photodetector,light-to-frequency circuits(LFCs)are based on frequency reading with photosensitive ring oscillators,which has better noise immunity and reduced system complexity,thus,can be utilized to novel application even in internet of things(loT)and bio&medical *** this review,low dimensional materials based circuit level photodetectors,which are core elements as the form of either inverters or ring oscillators for demonstration of LFCs,are *** with the introduction of low dimensional materials and their optical properties for optoelectronics,a fundamental concept for LFCs is specifically ***,research progress on low dimensional material based photosensitive inverters is addressed according to the types of ***,as one of practical method for the improvement of photodetector performance,molecular doping technology is ***,complete system of LFCs and its digitization for demonstration of production level,and potential application in the respective four aspects,(i)medical SpO_(2) detection,(ii)biological fluidic system,(iii)auto-lighting in agriculture,and(iv)optical feedback and sensing systems,are presented as systematic way to address the envisioned practical applications for the future displays including virtual reality and augmented reality,and *** a remark,LFCs based on low dimensional semiconductors are expected to be one of core components in trillion’s sensor area.

关键词： photodetector light-to-frequency conversion circuit transition metal dichalcogenide carbon nanotube

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Linking individual attributes and host specialization in brood parasitic cuckoos

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Avian Research 2022年第2期13卷 145-151页

作者： Sue-jeong Jin Hae-Ni kim Geun-Won Bae Jin-Won Lee jeong-Chil yoo Korea Institute of Ornithology Kyung Hee UniversitySeoul02447Republic of Korea Department of Biology Kyung Hee UniversitySeoul02447Republic of Korea

Generalist avian brood parasites vary considerably in their degree of host specialization(e.g.,number of hosts);some parasitize the nests of just a few host species,whereas others exploit more than 100 *** factors,including habitat range,habitat type,and geographic location,have been suggested to account for these ***,inter-specific differences in individual attributes,such as personality and plasticity,have rarely been considered as potential factors of such variation,despite their potential relationship to,for example,range *** cage experiments,we tested the hypothesis that parasitic species exploiting more host species may be more active and *** this end,we quantified behaviors exhibited by two Cuculus cuckoos(Common Cuckoo *** and Oriental Cuckoo ***)that vary greatly in their number of host ***,we evaluated exploratory behavior displayed by birds in the cage,such as the number of movements,head-turning,wing-flapping,and *** Common Cuckoo,which has a higher number of host species,tended to exhibit higher levels of exploratory behaviors than the Oriental *** study showed that the two cuckoo species exhibited different exploratory levels,as predicted by the differences in their number of *** studies regarding the causality between individual attributes and host specialization with improved experimental methodology would greatly enhance our understanding of the role of individual characteristics in the coevolution of avian brood parasites and their hosts.

关键词： Brood parasitism Common Cuckoo Individual attributes Number of hosts Oriental Cuckoo

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Synthesizing core-shell Ni-rich LiNi_(x)Co_(y)Mn_(z)O_(2) from spent Li-ion battery leachate

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Journal of Energy Chemistry 2024年第12期99卷 128-138页

作者： Seongdeock jeong Sanghyuk Park Dongwoo kim Gyeongbin Ko Wooseok kim Sungkyu kim Sungho Ban Haeun Lee yonghoon kim Kyungjung Kwon Department of Energy and Mineral Resources Engineering Sejong UniversityGwangjin-guSeoul 05006Republic of Korea Autonomous Intelligent Unmanned Flying Vehicles Institute Sejong UniversityGwangjin-guSeoul 05006Republic of Korea Department of Nanotechnology&Advanced Materials Engineering Sejong UniversityGwangjin-guSeoul 05006Republic of Korea Battery Cell Development Team Hyundai Motor CompanyHwaseong-siGyeonggi-do 18280Republic of Korea

As the global electric vehicle market continues to grow,the recycling of Li-ion battery (LIB) becomes more important worldwide and the resynthesis of cathode materials would be the most value-added recycling approach taking into account limited metal *** resynthesized homogenous LiNi_(x)Co_(y)Mn_(z)O_(2)(NCM) from spent LIB leachate shows comparable battery performance to pristine NCM from virgin materials,there is general concern in its cycling ***,we synthesize core–shell(CS) Ni-rich NCM,which consists of Ni-rich NCM as the core and NCM derived from the original or purified leachate of spent LIBs as the *** CS Ni-rich NCM exhibits improved rate capability resulting from expanded interslab thickness in the NCM *** Ni-rich NCM from purified LIB leachate shows improvement in cycling performance and thermal *** specifically delivers a capacity retention of 86.6%at a high temperature after 80 cycles compared to that (75.0%) of pristine CS Ni-rich *** improvements are caused by a relatively high Mg content on the shell and the widespread distribution of Al through the CS *** Ni-rich NCM derived from spent LIB leachate provides a new alternative approach to conventional LIB recycling methods,which would utilize efficiently limited metal resources for the sustainable LIB production.

关键词： Li-ion battery Recycling Leachate NCM Core-shell

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Rheological,textural,and functional characteristics of 3D-printed cheesecake containing guava leaf,green tea,and barley sprout powders

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Food Bioscience 2022年第3期47卷 338-345页

作者： ye-Eun Park jeong kim Hyun Woo kim Jiyeon Chun Department of Food Science and Technology Sunchon National UniversitySuncheon57922Republic of Korea Department of Biotechnology College of Life Science and BiotechnologyKorea UniversityAnam-dongSeongbuk-guSeoul02841Republic of Korea kimchi Science and Industrialization Institute Sunchon National UniversitySuncheon57922Republic of Korea

The use of 3D food printing as an alternative to manufacturing customized food is gaining *** this study,functional powders of guava leaf (GL),green tea (GT),and barley sprouts (BS) were tested as edible ink ingredients for printing cheesecake,and their physicochemical and functional properties were *** size and water and oil holding capacities were highest in GL powder,whereas the water-soluble index was highest in *** functional powder-added cheesecake,pseudoplastic and shear-thinning behavior was observed which is ideal for 3D *** shear modulus (1.87 kPa) of the control cheesecake (without functional powder) was significantly increased to 5 kPa or higher by adding functional *** in vitro glycemic index was lowest in GL cheesecake,whereas antioxidant activity and polyphenol content were highest in GT *** and GT powders would be beneficial as an edible ink to improve functional properties,such as antioxidant activity for GT and blood-glucose-lowering effect for BS,with enhanced printability and textural stability of 3D printed cheesecake.

关键词： 3D food print Guava Green tea Barley sprout Cheesecake

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