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Spring Voices in Korean Rice Fields:The Effect of Abiotic Variables and Syntopic Calls on the Calling Activity of the Treefrog Dryophytes suweonensis

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Asian Herpetological Research 2020年第4期11卷 335-341页

作者： Borzee AMAEL Sin EUNCHONG oh SUNMIN Jang YIKWEON Laboratory of Animal Behmnour and Conservation College of Biology and the EnvironmentNanjing Forestry UniversityNanjing 210037JiangsuChina Department of Life Sciences and Division of EcoScience Ewha Womans UniversitySeoul 120-750Republic of Korea Interdisciplinary Program of EcoCreative Ewha Womans UniversitySeoul 03760Republic of Korea

The calling activity of anurans is influenced by environmental variables and calls produced by syntopic amphibians,among other *** variables have a strong influence,such as temperature and predation dilution,while others may have a periodical influence such as the moon ***,we hypothesised that the calling activity of the Suweon treefrog,Dryophytes suweonensis,is restricted by specific environmental variables but reinforced by the calling activity of specific syntopic *** the criteria set by the experimental design,*** calling activity was significantly influenced by moon phase,temperature,date,time to sunset and the calling activity of Pelophylax nigromaculatus and *** variables are expected to be related to chorus size,predation,breeding phenology and competition,suggesting a broad plasticity in the calling activity of the species.

关键词： anuran hylidae calling activity environmental variable influence Korea North East Asia syntopic species

Use of Asian selected agricultural byproducts to modulate rumen microbes and fermentation

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Journal of Animal Science and Biotechnology 2017年第2期8卷 317-326页

作者： Yasuo Kobayashi Seongjin oh Htun Myint Satoshi Koike Lab of Animal Function and Nutrition Research Faculty of AgricultureHokkaido UniversitySapporo 060-8589 Japan

In the last five decades, attempts have been made to improve rumen fermentation and host animal nutrition through modulation of rumen microbiota. The goals have been decreasing methane production, partially inhibiting protein degradation to avoid excess release of ammonia, and activation of fiber digestion. The main approach has been the use of dietary supplements. Since growth-promoting antibiotics were banned in European countries in2006, safer alternatives including plant-derived materials have been explored. Plant oils, their component fatty acids,plant secondary metabolites and other compounds have been studied, and many originate or are abundantly available in Asia as agricultural byproducts. In this review, the potency of selected byproducts in inhibition of methane production and protein degradation, and in stimulation of fiber degradation was described in relation to their modes of action. In particular, cashew and ginkgo byproducts containing alkylphenols to mitigate methane emission and bean husks as a source of functional fiber to boost the number of fiber-degrading bacteria were highlighted. Other byproducts influencing rumen microbiota and fermentation profile were also described. Future application of these feed and additive candidates is very dependent on a sufficient, cost-effective supply and optimal usage in feeding practice.

关键词： Agricultural byproduct Fermentation Fiber degradation Methane mitigation Microbiota Plant secondary metabolites Rumen

Lipid nanoparticle-mediated CRISPR/Cas9 gene editing and metabolic engineering for anticancer immunotherapy

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Asian Journal of Pharmaceutical Sciences 2022年第5期17卷 641-652页

作者： Hyemin Ju Dongyoon Kim Yu-Kyoung oh College of Pharmacy and Research Institute of Pharmaceutical Sciences Seoul National UniversitySeoul 08826Republic of Korea

Metabolic engineering of the tumor microenvironment has emerged as a new *** dehydrogenase A(LDHA)is a prominent target for metabolic ***,we designed a cationic lipid nanoparticle formulation for LDHA gene *** plasmid DNA delivery efficiency of our lipid nanoparticle formulations was screened by testing the fluorescence of lipid nanoparticles complexed to plasmid DNA encoding green fluorescence protein(GFP).The delivery efficiency was affected by the ratios of three components:a cationic lipid,cholesterol or its derivative,and a fusogenic *** lipid nanoparticle designated formulation F3 was complexed to plasmid DNA co-encoding CRISPR-associated protein 9 and LDHA-specific sgRNA,yielding the lipoplex,pCas9-sgLDHA/*** lipoplex including GFP-encoding plasmid DNA provided gene editing in HeLa-GFP *** of B16F10 tumor cells with pCas9-sgLDHA/F3 yielded editing of the LDHA gene and increased the pH of the culture ***9-sgLDHA/F3 treatment activated the interferon-gamma and granzyme production of T cells in *** vivo,combining pCas9-sgLDHA/F3 with immune checkpoint-inhibiting anti-PD-L1 antibody provided a synergistic antitumor effect and prolonged the survival of tumor model *** study suggests that combining metabolic engineering of the tumor microenvironment with immune checkpoint inhibition could be a valuable antitumor strategy.

关键词： Gene editing Lipid nanoparticle Metabolic engineering Lactate dehydrogenase A Tumor microenvironment

Extraction of intersecting palm-vein and palmprint features for cancellable identity verification

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CAAI Transactions on Intelligence Technology 2024年第1期9卷 69-86页

作者： Jaekwon Lee Beom-Seok oh Kar-Ann Toh School of Electrical and Electronic Engineering Yonsei UniversitySeoulRepublic of Korea Department of Applied Artificial Intelligence Seoul National University of Science and TechnologySeoulRepublic of Korea

A novel method based on the cross-modality intersecting features of the palm-vein and the palmprint is proposed for identity *** on the unique geometrical relationship between the two biometric modalities,the cross-modality intersecting points provides a stable set of features for identity *** facilitate flexibility in template changes,a template transformation is *** maintaining non-invertibility,the template transformation allows transformation sizes beyond that offered by the con-ventional *** experiments using three public palm databases are conducted to verify the effectiveness the proposed system for identity recognition.

关键词： biometrics hand vein recognition hand-based biometrics multi-biometrics palmprint recognition

Anode-less all-solid-state batteries:recent advances and future outlook

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Materials Futures

Materials Futures 2023年第1期2卷 122-131页

作者： Nohjoon Lee Jihoon oh Jang Wook Choi School of Chemical and Biological Engineering Seoul National UniversitySeoul 08826Republic of Korea

While all-solid-state batteries have built global consensus with regard to their impact in safety and energy density,their anode-less versions have attracted appreciable attention because of the possibility of further lowering the cell volume and *** perspective article summarizes recent research trends in anode-less all-solid-state batteries(ALASSBs)based on different types of solid electrolytes and anticipates future directions these batteries may *** particularly aim to motivate researchers in the field to challenge remaining issues in ALASSBs by employing advanced materials and cell designs.

关键词： all-solid-state batteries anode-free anode-less interface stability lithium dendrite

紫外光照射下Fe-碳纳米管/TiO_2复合材料降解罗丹明B(英文)

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催化学报 2010年第7期31卷 751-758页

作者： oh Wonchun Department of Advanced Materials and Science Engineering Hanseo University

The composites comprising Fe-carbon nanotubes(CNTs) on TiO2 were prepared by a modified sol-gel method and characterized by nitrogen adsorption,scanning electron microscopy,transmission electron microscopy,X-ray diffraction,and energy dispersive X-ray *** photocatalytic decomposition of rhodamine B(Rh.B) under UV irradiation and air aeration catalyzed by the composites was *** photocatalytic activity of TiO2 nanoparticles was significantly enhanced by the large CNT network that facilitated electron transfer between adsorbed Rh.B molecules and the catalyst substrate and the simultaneous occurrence of the photo-Fenton reaction in the presence of Fe particles.A marked acceleration of the decomposition rate was observed with aeration by flowing air aeration due to the formation of the circulatory photo-Fenton *** oxygen demand of piggery waste was measured at regular intervals to evaluate the mineralization of wastewater.

关键词： iron carbon nanotube titania rhodamine B photocatalytic activity photo-Fenton

Selective catalytic NO_x reduction on Antimony promoted V_2O_5-Sb/TiO_2 catalyst

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Rare Metals 2006年第z2期25卷 84-88页

作者： HA Heon Phil CHUNG Soon Hyo oh Young Joo Metal Processing Research Center Korea Institute of Science and Technology Cheongryang Seoul 130-650 Republic of Korea

Quantum chemical calculation was carried out to choose a promoter which can reduce the poisoning of V2O5/TiO2 catalysts by SO2. Several atoms were chosen as candidates and new catalysts were synthesized by impregnation method. The NOx conversion rate was measured at temperatures between 100 and 400 ℃ and poisoning effect was investigated. The most promising candidate promoter, Se, was excluded because of its high vapor pressure. On the other hand, Sb shows best promoting properties. Sb promoted catalyst reaches the maximum NOx conversion rate at 250 ℃. It also shows considerably enhanced resistance to poisoning of V2O5/TiO2 catalysts by SO2.

关键词： De NOx selective catalytic reduction SO2 poisoning low temperature activity

Microstructure of porous Cu fabricated by freeze-drying process of CuO/camphene slurry

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中国有色金属学会会刊：英文版 2012年第S3期22卷 688-691页

作者： Sung-tag oh Si-young CHANG Myung-jin SUK Department of Materials Science and Engineering Seoul National University of Science and Technology Department of Materials Engineering Korea Aerospace University Department of Materials and Metallurgical Engineering Kangwon National University

Porous Cu with macroscopically aligned channels was synthesized using a freeze-drying ***-based CuO slurry was prepared by milling at 60 °C with a small amount of *** of a slurry was done at 25 °C while unidirectionally controlling the growth direction of the *** were generated subsequently by sublimation of the camphene during *** green body was hydrogen-reduced at 300 °C for 30 min,and sintered in the furnace at 700 °C for 1 h under a hydrogen *** observation reveals that all of the sintered samples are composed of only Cu phase and show macroscopic open pores with an average size of 100 μm which are aligned along its macroscopic growth *** internal wall of the macroscopic aligned pore shows relatively small pores due to the traces of the camphene left between the concentrated Cu particles on the internal *** in the porosity and pore size with increasing camphene content was explained by the change of the growth behavior of the camphene crystals.

关键词： porous Cu CuO-camphene slurry freeze-drying hydrogen reduction sintering

Exploring anharmonic lattice dynamics and dielectric relations in niobate perovskites from first-principles self-consistent phonon calculations

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npj Computational Materials 2023年第1期9卷 757-766页

作者： Kwangrae Kim Woohyun Hwang Seung-Hyun Victor oh Aloysius Soon Department of Materials Science&Engineering Yonsei UniversitySeoul 03722Republic of Korea

Group I niobates(KNbO_(3) and NaNbO_(3))are promising lead-free alternatives for high-performance energy storage *** their potential,their complex phase transitions arising from temperature-dependent phonon softening and anharmonic effects on dielectric properties remain poorly *** this study,we employ density-functional theory(DFT)and self-consistent phonon(SCP)calculations to investigate finite-temperature phonons in cubic niobate *** include explicit anharmonic vibrational effects,SCP frequencies are shifted by the bubble self-energy correction within the quasiparticle(QP)approximation,providing precise descriptions of phonon softening in these strongly anharmonic *** further calculate the static dielectric constant of KNbO_(3) and NaNbO_(3) as a function of temperature using the Lyddane-Sachs-Teller(LST)relation and QP-corrected phonon *** theoretical results align with experimental data,offering reliable temperature-dependent phonon dispersions while considering anharmonic self-energies and thermal expansion effects,enhancing our understanding of the complex relations between lattice vibrations and phase transitions in these anharmonic oxides.

关键词： harmonic phonon dielectric