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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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Analysis of Quenching Resistor Effect to Improve Stability of TIA Circuit for APD-A Secondary Publication

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Journal of Electronic Research and Application 2024年第2期8卷 54-61页

作者： Dong-Han Ki Yu-Rin Jin Sung-Mi kim seong-Ik Cho Department of Electronics Engineering Jeonbuk National UniversityJeollabuk-doRepublic of Korea

In this paper,since the Avalanche Photo Diode(APD)for Light-to-Voltage LTV conversion uses a high voltage in the operating range unlike other Photo Diodes(PD),the quenching resistor must be connected in series to prevent overcurrent when using the Transimpedance Amplifier(TIA).In such a case,quenching resistance may affect the transfer function of the TIA circuit,resulting in serious ***,in this paper,by analyzing the effect of APD quenching resistance on the voltage and current loop transfer function of TIA,we proposed a loop analysis and a method for determining the quenching resistance value to improve stability.A TIA circuit with quenching resistance was designed by the proposed method and its operational stability was verified through simulation and chip fabrication.

关键词： APD TIA Quenching resistor Stability Transfer function

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Clinical significance of distally located periurethral calcification in patients with lower urinary tract symptoms of benign prostate hyperplasia

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Asian Journal of Andrology 2023年第3期25卷 361-365页

作者： seong Hyeon Yu Do Gyeong Lim Sun-Ouck kim Department of Urology Chonnam National University Medical SchoolGwang-ju 61469Korea

This study evaluated the association of periurethral calcification(PUC)with uroflowmetric parameters and symptom severity in male patients with lower urinary tract symptoms(LUTS)of benign prostatic hyperplasia(BPH).The data were collected from a prospectively maintained database of 1321 men with LUTS of BPH who visited Chonnam National University Hospital(Gwang-ju,Korea)from January 2015 to December *** severity and location were evaluated on the midsagittal plane during transrectal *** among age,prostate-related parameters,International Prostate Symptom Score(IPSS),and uroflowmetric parameters were *** the 1321 patients in this study,530(40.1%)had *** with PUC had significantly higher IPSS(mean±standard deviation[s.d.]:15.1±8.7 vs 13.1±7.9;P<0.001)and lower peak flow rate(Qmax;mean±s.d.:12.4±6.6 ml s^(-1) vs 14.7±13.3 ml s^(-1);P<0.001),compared with patients who did not have *** according to PUC severity revealed that patients with severe PUC had higher prostate-specific antigen(PSA)level(P=0.009),higher total IPSS(P<0.001),lower Qmax(P=0.002),and smaller prostate volume(P<0.001),compared with patients who had non-severe(mild or moderate)*** analysis showed that distal PUC was independently associated with high total IPSS(P=0.02),voiding symptom score(P=0.04),and storage symptom score(P=0.023),and low Qmax(P=0.015).In conclusion,PUC was significantly associated with worse LUTS parameters in terms of IPSS and ***,distally located PUC was independently associated with worse LUTS of BPH in men.

关键词： benign prostate hyperplasia calcification location

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Amine functionalization on thermal and mechanical behaviors of graphite nanofibers-loaded epoxy composites

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Journal of Materials Science & Technology 2023年第20期151卷 80-88页

作者： seong-Hwang kim Sang-Jin Park Seul-Yi Lee Soo-Jin Park Department of Chemistry Inha University100 InharoIncheon 22212the Republic of Korea

With the growing demand for faster and more powerful computing,effective heat dissipation is essential to ensure the longevity,reliability,and high performance of electronic *** the field of modern electronic packaging materials,there is a great need for graphitic material-loaded polymeric composites(GPCs)with excellent thermal ***,the enhancement efficiency of GPCs is hindered by the agglomeration of fillers and the interfacial thermal resistance caused by the lack of continuous thermally conductive pathways between the filler and *** the interfaces between filler and matrix is of great importance in optimizing the performances of ***,we fabricated graphite nanofibers(GNF)-loaded nanocomposites using acid-functionalized GNF(AGNF)and acidtetraethylenepentamine-functionalized(TGNF)as a filler and epoxy resin as a matrix with different GNF loading contents to explore the interfacial properties of the *** optimal GNF loading for AGNF was 0.5 wt.%,while the TGNF showed 0.75 wt.%.The highest thermal conductivity(0.51 W m^(−1) K^(−1))and fracture toughness(25.8 MPa m^(1/2))values were found in the TGNF-loaded nanocomposites with a fraction of 0.75 wt.%,representing enhancements of∼145%and∼400%,respectively,compared to those of neat *** experimental data presented herein demonstrate that the interfacial properties play a significant role in enhancing the thermal and mechanical performances of the *** present approach is expected to serve as a valuable tool in the design of conductive polymeric nanocomposites for further practical applications,such as thermal interface materials and packaging of high-power electric devices.

关键词： Graphite nanofiber Nanocomposites Interfacial interaction Thermal conductivity Fracture resistance

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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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High efficiency CZTSSe solar cells enabled by dual Ag-passivation approach via aqueous solution process

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Journal of Energy Chemistry 2023年第2期77卷 239-246,I0007页

作者： Temujin Enkhbat Enkhjargal Enkhbayar Namuundari Otgontamir Md Hamim Sharif Md Salahuddin Mina seong Yeon kim JunHo kim Department of Physics Incheon National UniversityIncheon 22012Republic of Korea Research Center for Thin Film Solar Cells Daegu-Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea Global Energy Research Center for Carbon Neutrality Incheon National UniversityIncheon 22012Republic of Korea

Ag substitution in Cu_(2)ZnSn(S,Se)_(4)(CZTSSe)is a promising way to mitigate Cu/Zn related defects,electrostatic fluctuations and Shockley-Read-Hall(SRH)recombination ***,high performance ACZTSSe solar cells are generally demonstrated with more Ag amounts and strenuous fabrication processes,which are not ideal when using cheap constituent materials *** reduce the Ag amount(2%-3%),local Ag substitutions into CZTSSe at front(F),back(B)and dual front/back(FB)were *** results revealed that F-passivation effectively reduced the Cu/Zn related defects and further limits the interface/bulk recombination whereas B-passivation improved the grain growth at the back interface and further allows enhanced transport of charge *** employing the dual Agpassivation approach,the final ACZTSSe device parameters were significantly improved and remarkable power conversion efficiency(PCE)of 12.43%was achieved with eco-friendly aqueous solution process.

关键词： Ag-doped CZTSSe Dual surface passivation Defect passivation Aqueous spray deposition

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Understanding secondary phase inclusion and composition variations in the microstructure design of n-type Bi_(2)Te_(3) alloys via selective dissolution of KCl

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Journal of Advanced Ceramics 2023年第12期12卷 2360-2370页

作者： Gwang Min Park Seunghyeok Lee Jun-Yun Kang Seung-Hyub Baek Heesuk kim Jin-Sang kim seong Keun kim KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoul 02841Republic of Korea Electronic Materials Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea Department of Materials Science and Chemical Engineering Hanyang UniversityAnsan 15588Republic of Korea Ferrous Alloy Department Korea Institute of Materials ScienceChangwon 51508Republic of Korea Soft Hybrid Materials Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea Institute of Advanced Composite Materials Korea Institute of Science and TechnologyWanju 55324Republic of Korea

This study investigated the effects of KCl treatment on microstructure and thermoelectric properties of n-type Bi_(2)Te_(2.7)Se_(0.3)(BTS)thermoelectric *** innovative KCl treatment was originally intended to introduce nanopores through selective dissolution of KCl from a mixture of thermoelectric materials and ***,it unexpectedly induced substantial variations in material composition and microstructure during the subsequent spark plasma sintering(SPS)*** groups adsorbed on the powder surface during the dissolution resulted in the emergence of a Bi_(2)TeO_(5) secondary phase within the BTS matrix after the SPS process at 450℃.The concentration of Bi_(2)TeO_(5) increased with an increase in the KCl ***,a remarkable grain growth occurred at low KCl concentrations,likely due to the liquid-phase formation in a Te-rich composition during ***,excessive Bi_(2)TeO_(5) at higher KCl concentrations hindered grain *** variations in the microstructure had complex effects on electrical properties:The TeBi antisite defects increased the electron concentration,and Bi_(2)TeO_(5) reduced electron ***,the lattice thermal conductivity decreased due to the presence of Bi_(2)TeO_(5),from 0.8 W·m^(−1)·K^(−1) at 298 K for the pristine BTS to 0.6 W·m^(−1)·K^(−1) at 298 K for BTS treated with 1 wt%*** insights allowed precise adjustments of the electrical and thermal conductivities,leading to an enhancement in the maximum value of figure-of-merit(ZT)from 0.76 to 0.96 through the selective dissolution of KCl *** believe that our observations potentially enable advances in thermoelectric materials by engineering microstructures.

关键词： thermoelectric materials Bi_(2)Te_(3) Bi_(2)TeO_(5) grain growth n-type KCl

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Management of symptomatic cervical facet cyst with cervical interlaminar epidural block: A case report

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World Journal of Clinical Cases 2022年第32期10卷 11936-11941页

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

BACKGROUND Symptomatic cervical facet cysts are relatively rare compared to those in the lumbar *** cysts are usually located in the 7th cervical and 1st thoracic vertebral(C7/T1)area,and surgical excision is performed in most ***,facet cysts are associated with degenerative conditions,and elderly patients are often ineligible for surgical *** interlaminar epidural block has been used in patients with cervical radiating symptoms and achieved good ***,cervical interlaminar epidural block may be the first-choice treatment for symptomatic cervical facet *** SUMMARY A 70-year-old man complained of a tingling sensation in the left hand,focused on the 4th and 5th fingers,for 1 year,and posterior neck pain for over 5 *** patient’s numeric rating scale(NRS)score was 5/*** patient was diagnosed with symptomatic cervical facet cyst at the left C7/T1 facet *** cervical interlaminar epidural block at the C7/T1 level with 20 mg triamcinolone and 5 mL of 0.5%lidocaine was *** patient's symptoms improved immediately after the block,with an NRS score of 3 *** 3 mo,his left posterior neck pain and tingling along the left 8th cervical dermatome were relieved,with an NRS score of *** A cervical interlaminar epidural block is a good alternative for managing symptomatic cervical facet cysts.

关键词： Cervical vertebrae Cysts Epidural Injections Neck pain Therapeutics Zygapophyseal joint Case report

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Effect of Roasting Temperature on Production of Functional Wild-Rice Tea and Factors Influencing Purchase Intention Towards Wild-Rice Tea

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Rice science 2022年第3期29卷 197-200页

作者： Hyun Yi JUNG Kyoung Rim HAN Geon LEE joong Kyun kim Department of Biotechnology and Bioengineering Pukyong National UniversityNam-GuBusan 485137Republic of Korea Department of Research&Development Hyundae F&CBusan 604-842Republic of Korea Department of Environmental Engineering Dong-A UniversityBusan 49315Republic of Korea

The properties of raw wild rice were investigated to produce a functional tea,and the value of this tea was *** highest antioxidant activity[80.5%2,2-diphenyl-1-picrylhydrazyl(DPPH)radical scavenging activity]was achi... 详细信息

关键词： Influencing Tea Functional

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Periodic Tail Motion Linked to Wing Motion Affects the Longitudinal Stability of Ornithopter Flight

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Journal of Bionic Engineering 2012年第1期9卷 18-28页

作者： Jun-seong Lee joong-kwan kim Jae-hung Han Charles P. Ellington Department of Aerospace Engineering KAIST Daejeon 305701 South Korea Department of Zoology University of Cambridge Downing Street Cambridge CB2 3EJ UK

During slow level flight of a pigeon, a caudal muscle involved in tail movement, the levator caudae pars vertebralis, is activated at a particular phase with the pectoralis wing muscle. Inspired by mechanisms for the control of stability in flying animals, especially the role of the tail in avian flight, we investigated how periodic tail motion linked to motion of the wings affects the longitudinal stability of ornithopter flight. This was achieved by using an integrative ornithopter flight simulator that included aeroelastic behaviour of the flexible wings and tail. Trim flight trajectories of the simulated omithopter model were calculated by time integration of the nonlinear equations of a flexible multi-body dynamics coupled with a semi-empirical flapping-wing and tail aerodynamic models. The unique trim flight characteristics of ornithopter, Limit-Cycle Oscillation, were found under the sets of wingbeat frequency and tail elevation angle, and the appropriate phase angle of tail motion was determined by parameter studies minimizing the amplitude of the oscillations. The numerical simulation results show that tail actuation synchronized with wing motion suppresses the oscillation of body pitch angle over a wide range of wingbeat frequencies.

关键词： omithopter flapping flight periodic tail motion longitudinal flight stability aeroelasticity

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