A5046567086- Ocular Surface and Contact Lens
- Advanced Sensor and Energy Harvesting Materials
- Geochemistry and Geologic Mapping
- Geological formations and processes
- Hydrology and Sediment Transport Processes
- Soil Moisture and Remote Sensing
- Landslides and related hazards
- Remote-Sensing Image Classification
- Soil Geostatistics and Mapping
- Copper-based nanomaterials and applications
- 3D Surveying and Cultural Heritage
- Innovative Teaching and Learning Methods
- Dye analysis and toxicity
- Environmental Education and Sustainability
- Leaf Properties and Growth Measurement
- Advanced Fiber Optic Sensors
- Heavy metals in environment
- Educational Environments and Student Outcomes
- Children's Rights and Participation
- Online and Blended Learning
- Icing and De-icing Technologies
- Analytical Chemistry and Sensors
- Sustainability in Higher Education
- Advanced Battery Materials and Technologies
- Remote Sensing and LiDAR Applications
Yonsei University
2021-2025
Institute for Basic Science
2021-2022
Yeungnam University
2022
Government of the Republic of Korea
2021
Chungnam National University
2015-2019
The University of Texas at Austin
2019
Integration of a smart contact lens and heat patch realizes personal management ocular surface diseases wirelessly.
Abstract Herein, a wireless and soft smart contact lens that enables real‐time quantitative recording of cholesterol in tear fluids for the monitoring patients with hyperlipidemia using smartphone is reported. This incorporates an electrochemical biosensor continuous detection concentrations, stretchable antenna, integrated circuits communication, which makes only device required to operate this remotely without obstructing wearer's vision. The rabbit model utilized confirm correlation...
Copper indium diselenide (CuInSe2) is a prototype ternary compound and group I–III–VI semiconductor with useful optoelectronic properties. CuInSe2 nanocrystals have been of significant interest because their size-tunable optical properties lack toxic heavy metals. Because the particular vacancy antisite substitutional point defects in CuInSe2, large stoichiometric deviations can be tolerated, sometimes leading to so-called ordered compounds (OVCs). Here, we use Raman spectroscopy...
Conventional interpretations of alluvial fan margins attribute their changes to environmental factors such as tectonic activity or climate variations. Under steady dynamic conditions, margin (s) is expected grow continuously, following the time (t) dependence s~t(1/3), based on mass conservation. However, this study aims propose a new concept that challenges conventional understanding. A key finding research can retreat even under constant upstream boundary phenomenon significantly...
It has been widely accepted that channel geometry on alluvial fans is predominantly controlled by upstream boundary conditions and remains stable if those do not change. This study challenges notion examining how width varies in space time under constant conditions. Experiments using a sediment mixture (sand crushed walnut) with water discharge rates reveal distinct patterns width. In lower runs, total decreases over time, while higher it increases. Theoretical principles suggest inversely...
We introduce a cost-effective reflectance calibration method for small unmanned aerial vehicle (sUAV) images using ethylene-vinyl acetate (EVA) greyscale reference panels. The goal is to test if such light-weight and low-cost panels can provide sufficient accuracy support UAV survey projects. universal equations convert red-green-blue (RGB) digital number (DN) values of surface were constructed based on the relationship between RGB measured by colour digitizer spectrometer. compared results...
This article examined the spectral interference by heavy metal on signal of moisture content contaminated soils. Soil samples were collected from an abandoned mine area, and chemical analysis revealed extremely high contamination amount copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd), lead (Pb). The mineralogical showed that signature soils was manifested secondary minerals. Water suppressed reflectance soil but increased absorption depths. Although a regression model can predict using...
To study the relationship between short-wavelength infrared reflectance and moisture content in beach, we conducted a rigorous analysis using regression models under different parameter settings defined by band selection, average grain size, sand mineralogy. The spectral data were collected hand-held spectrometer with 3-6 nm resolution. sizes measured from 0.15 to 0.92 mm, an of 0.75 mm. mineral components Quartz-Alkali Feldspar-Plagioclase Calcite-Quartz-Alkali Feldspar-Plagioclase. We...
Mineralogical characteristics of coastal sediments and their spectral related to moisture content were analysed for South Korea in this study, Advanced Spaceborne Thermal Emission Reflection Radiometer (ASTER) short-wave infrared (SWIR) remote sensing approaches mapping based on conventional SAM module proposed study. The mineral composition included the major minerals quartz, alkali feldspar, plagioclase calcite accessary mica clay. absorption features studied occurred at wavelengths 1.900...
ABSTRACT Autogenic feedbacks can produce large‐scale, organized stratigraphic patterns in alluvial fans, but autogenic depositional signatures of specific upstream boundary conditions remain challenging to interpret. Here, a combination theory, experiment and field application is used explore how lithofacies changes be interpreted as indicators conditions. Six experiments were conducted test the effects sediment supply water discharge rates on advance retreat (grain‐size transition) an fan...
It has been widely accepted that channel geometry on alluvial fans is predominantly controlled by upstream boundary conditions and remains stable if those do not change. This study challenges notion examining how width varies in space time under constant conditions. Experiments using a sediment mixture (sand crushed walnut) with water discharge rates reveal distinct patterns. In lower runs, total decreases over time, while higher it increases. Theoretical principles suggest inversely...
This study investigates spectral characteristics of romaine lettuce at different uptake level Zn. Also, changes are analyzed to define response Zn uptake. The concentration control samples range from 0.009 0.030 %, whereas that contaminated shows a 0.014 0.119 %. dramatically rises 68th day experiment. reflectance containing decreases in NIR region and increase visible as increases. Moreover, blue shift occurs red edge point, contains more We think it is very remarkable detect field seconds.
This study investigated variations of spectral characteristics Korean pine needles associated with heavy metal contamination at an abandoned Pb-Zn mine. XRF analysis revealed that the are mainly polluted by Zn and As. Among contaminants, As content showed highest correlation surface reflectance in visible near infrared spectrum where positive relationship negative detected. Especially, NIR have R <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...