A5100599602- Indoor Air Quality and Microbial Exposure
- Aquatic Ecosystems and Phytoplankton Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Infection Control and Ventilation
- Air Quality and Health Impacts
- Water Quality and Pollution Assessment
- Essential Oils and Antimicrobial Activity
- Digital Holography and Microscopy
- Electromagnetic wave absorption materials
- Nanoparticles: synthesis and applications
- Image Processing Techniques and Applications
- Marine and coastal ecosystems
- Recycling and Waste Management Techniques
- Viral gastroenteritis research and epidemiology
- Smart Materials for Construction
- Particle Dynamics in Fluid Flows
- Microfluidic and Bio-sensing Technologies
- Algal biology and biofuel production
- Skin Protection and Aging
- Aerosol Filtration and Electrostatic Precipitation
- Bioactive natural compounds
- Cell Image Analysis Techniques
- Conducting polymers and applications
National Institute of Environmental Research
2012-2023
Gyeonggi Research Institute
2015
Seoul National University
2013
A novel microchannel-based inertial separator that can rapidly and continuously separate submicron aerosols according to particle differences Dean vortices in the airflow was developed.
Abstract Observing microbial colonies is the standard method for determining microbe titer and investigating behaviors of microbes. Here, we report an automated, real-time bacterial microcolony-counting system implemented on a wide field-of-view (FOV), on-chip microscopy platform, termed ePetri. Using sub-pixel sweeping (SPSM) with super-resolution algorithm, this offers ability to dynamically track individual microcolonies over FOV 5.7 mm × 4.3 without requiring moving stage or lens. As...
Controlling bioaerosols has become more important with increasing participation in indoor activities. Treatments using natural-product nanomaterials are a promising technique because of their relatively low toxicity compared to inorganic such as silver nanoparticles or carbon nanotubes. In this study, antimicrobial filters were fabricated from natural Euscaphis japonica nanoparticles, which produced by nebulizing E. extract. The coated assessed terms pressure drop, activity, filtration...
Cyanobacteria can exist in water resources and produce odorants. 2-Methylisoborneol (2-MIB) geosmin are the main odorant compounds affecting drinking quality reservoirs. In this study, encoding genes 2-MIB (mic, monoterpene cyclase) (geo, putative synthase) were investigated using newly developed primers for quantitative PCR (qPCR). Gene copy numbers compared to 2-MIB/geosmin concentrations cyanobacterial cell abundance. Samples collected between July October 2020, from four sites South...
Abstract In 2012, a large concentration of geosmin was found in the Paldang reservoir, which is primary source drinking water Seoul, Korea. June and September we measured concentrations cyanobacteria actinomycetes, geosmin, to identify reservoir. A total 68 samples were collected from two sampling sites (Sambong, Paldang), used analyze correlation between cyanobacteria, geosmin. The cell density attained maximum 24,722 cells/mL on August 11, 2012 occurred at high 3,934 ng/L 13 Sambong. After...
Summary We investigated the abundance of Pseudanabaena species and concentration monoterpene 2‐methylisoborneol (2‐MIB) from July to October at three sampling sites in South Korea. To identify main cause 2‐MIB occurrence drinking water source, we characterized performed a phylogenetic analysis synthase gene. was dominant cyanobacterium (68%–100%) among samples. At all sites, strong positive correlation detected between concentrations cell numbers. A 222 MIB sequences isolated samples showed...
에폭시 수지에 아연 분말을 분산시켜 전도성 복합재료를 제조하여 충전제의 함량별 체적 전기저항과 미세경도, 미세구조, 열적 성질 등을 조사하였다. 아연/에폭시 수지 복합체의 전기저항은 8.8×10⁶~4.4×10³Ω·㎝의 범위를 나타내었다. 아연함량이 70 wt%인 lower 관투전이 영역에서 upper 영역인 78 wt%까지 전기저항 값이 급격하게 감소하였다. 이는 분말 함량 wt% 이상에서부터 전자가 잘 이동할 수 있는 통로가 만들어진 것으로 보인다. 함량이 이상에서는 매트릭스 내의 함량만 늘어날 뿐 체적저항의 감소에는 영향을 주지 않는 나타났다. 초미세 경도(DHT) 값은 4.566~6.604로 이것은 내 분말의 증가할수록 DHT 증가하는 고분자 내에 분말간의 보강효과에 의해 경도가 증가한 전기전도도는 니켈/에폭시 복합체보다 복합체가 높았다. 경도는 보고된 복합체와 복합체는 비슷한 경도를 가진 안정성은 400~470 ℃ 사이에서 매트릭스로 사용되어진 수지의 분해로 무게...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Water Resources Research. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Occurrence phylogenetic analysis of Pseudanabaena sp. producing 2-methylisoborneol in drinking water source South KoreaAuthorsJung EunLeeiDMi NaYuSoonjuYuMyeongseopByeonSee all...