A5063561395- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Plant responses to elevated CO2
- Risk and Safety Analysis
- Magnetic properties of thin films
- Rangeland and Wildlife Management
- Technology and Data Analysis
- Atmospheric chemistry and aerosols
- Microbial Community Ecology and Physiology
- Innovation Policy and R&D
- Magnetic and transport properties of perovskites and related materials
- Technology Assessment and Management
- Seedling growth and survival studies
- Gender Diversity and Inequality
- Ecology and Vegetation Dynamics Studies
- Microbial Metabolic Engineering and Bioproduction
- Entomopathogenic Microorganisms in Pest Control
- Wildlife-Road Interactions and Conservation
- Meteorological Phenomena and Simulations
- Forest Biomass Utilization and Management
- Korean Urban and Social Studies
- Diverse Topics in Contemporary Research
- Soil Carbon and Nitrogen Dynamics
- Educational Systems and Policies
- Soil Geostatistics and Mapping
University at Buffalo, State University of New York
1993-2024
Seoul National University
2001-2022
Korea Institute of Energy Technology Evaluation and Planning
2022
University of Notre Dame
2017-2021
Duke University
2014-2018
Korea Institute of Nuclear Safety
2017
Abstract The insecticidal activities of materials derived from the fruit fennel, Foeniculum vulgare , against adults Sitophilus oryzae, Callosobruchus chinensis and Lasioderma serricorne were examined using direct contact application fumigation methods. biologically active constituents fruits characterized as phenylpropenes ( E )‐anethole estragole, monoterpene (+)‐fenchone, by spectroscopic analysis. Responses varied with insect species, compound, dose exposure time. In a filter paper...
Responses of forest ecosystems to increased atmospheric CO2 concentration have been studied in few free-air enrichment (FACE) experiments during last two decades. Most studies focused principally on the overstory trees with little attention given understory vegetation. Despite its small contribution total productivity an ecosystem, vegetation plays important role predicting successional dynamics and future plant community composition. Thus, response Pinus taeda plantation at Duke Forest FACE...
Abstract Rising temperatures and increases in drought negatively impact the efficiency sustainability of both agricultural forest ecosystems. Although hydraulic limitations on photosynthesis have been extensively studied, a solid understanding links between whole plant hydraulics photosynthetic processes at cellular level under changing environmental conditions is still missing, hampering our predictive power for mortality. Here, we examined traits CO 2 assimilation rate progressive water...
Changes in evapotranspiration (ET) from terrestrial ecosystems affect their water yield (WY), with considerable ecological and economic consequences. Increases surface runoff observed over the past century have been attributed to increasing atmospheric CO2 concentrations resulting reduced ET by ecosystems. Here, we evaluate balance of a Pinus taeda (L.) forest broadleaf component that was exposed [CO2 ] enrichment (ECO2 ; +200 ppm) for 17 years fertilization 6 years, monitored hundreds...
Most measurements and models of forest carbon cycling neglect the flux associated with turnover branch biomass, a physiological process quantified for other organs (fine roots, leaves, stems). Synthesizing data from boreal, temperate, tropical forests (184,815 trees), we found that including increased empirical estimates aboveground wood production by 16% (equivalent to 1.9 Pg Cy
Increases in atmospheric carbon dioxide (CO2 ) concentrations are expected to lead increases the rate of tree biomass accumulation, at least temporarily. On one hand, trees may simply grow faster under higher CO2 concentrations, preserving allometric relations that prevailed lower concentrations. Alternatively, themselves change. In this study, effects elevated (eCO2 on and were jointly assessed. Over 100 trees, grown Duke Forest, NC, USA, harvested from eight plots. Half plots had been...
We have applied a double-bridge voltage-correlation technique to study the nonequilibrium superconducting properties in high-${\mathit{T}}_{\mathit{c}}$ superconductors. Using Y-Ba-Cu-O thin films of thickness less than 15 nm, we observed voltage pulses as fast 40 ps. The temporal photoresponse signal was found depend strongly on sample's thickness. A systematic trend superconductivity decay time function film obtained. phonon-trapping effect has been verified be major limiting mechanism...
Abstract Diversity is often key to solving challenging problems. It sparks creativity through embracing various perspectives. Energy transition and climate change are challenges that require significant innovative ideas. This study designed analyze if diversity in the workforce has a meaningful relation research development (R&D) performance of public renewable energy South Korea, possibly, compare its between power generation industries. Using 538 R&D projects, this analyzed...
Elevated atmospheric CO2 (eCO2 ) typically increases aboveground growth in both chamber and free-air carbon enrichment (FACE) studies. Here we report on the impacts of eCO2 nitrogen amendment coarse root biomass net primary productivity (NPP) at Duke FACE study, where half eight plots a 30-year-old loblolly pine (Pinus taeda, L.) plantation, including competing naturally regenerated broadleaved species, were subjected to (ambient, aCO2 plus 200 ppm) for 15-17 years, combined with annual...
Abstract We evaluated the effect on soil CO 2 efflux ( F ) of sudden changes in photosynthetic rates by altering concentration plots subjected to +200 ppmv for 15 years. Five‐day intervals exposure elevated eCO ranging 1.0–1.8 times ambient did not affect . decrease until 4 months after termination long‐term treatment, longer than 10 days observed experimental blocking C flow belowground, but shorter ~13 it took increase following initiation The reduction upon enrichment (~35%) cannot be...
Abstract Enhancement of net primary production (NPP) in forests as atmospheric [CO 2 ] increases is likely limited by the availability other growth resources. The Duke Free Air CO Enrichment (FACE) experiment was located on a moderate‐fertility site southeastern US, loblolly pine ( Pinus taeda L.) plantation with broadleaved species growing mostly mid‐canopy and understory. FACE ran from 1994 to 2010 combined elevated (eCO ) nitrogen (N) additions. We assessed spatial temporal variation NPP...
이 논문은 문학적인 측면에서 고문서를 연구하는 방법과 콘텐츠 제작 사례 를 구체적으로 보여주는 것이 목적이다. 고문서 스토리텔링 방법론을 적용하 여 ‘노비로 팔려간 곱덕이의 도망’이라는 원천이야기를 복원해 내는 과정을 보여주고, 이렇게 만들어진 ‘곱덕이 이야기’가 ‘원천소재(源泉素材)’로 활용되 어 다양한 콘텐츠로 제작된 사례를 소개하였다. 고문서는 1차적으로는 역사 연구의 기초자료이지만 그 속에는 이야기의 핵심 요소인 인물, 사건, 배경 등 포함되어 있다. 바탕으로 하고 여기에 적당한 상상력을 더하면 민간의 삶을 알 수 있는 이야기, 생생한 사람 사는 이야기가 만들어 질 소재로 이야기를 만들기 위해서는 먼저 준비단계에서 탈초(脫草), 정서(正書), 번역 등의 필수적으로 거쳐야 예비단계에서 연구방법론을 적용하여 꼼꼼히 읽어야 한다. 이때 낱장의 서사의 조각으로 보고 이를 연결하여 한 편의 내는데, 과정에서 고문서의 빈틈에 첨가한다. 다음에 인과관계 에 따라 스토리와 사건을...