A5103146895- Impact of Light on Environment and Health
- Circadian rhythm and melatonin
- Infrared Target Detection Methodologies
- Air Quality Monitoring and Forecasting
- Optical Imaging and Spectroscopy Techniques
- Optical Wireless Communication Technologies
- Calibration and Measurement Techniques
- Urban Heat Island Mitigation
- Remote Sensing in Agriculture
- Solar Thermal and Photovoltaic Systems
- Astronomy and Astrophysical Research
- Image and Signal Denoising Methods
- Seismic Imaging and Inversion Techniques
- Plant Parasitism and Resistance
- Color Science and Applications
- Air Quality and Health Impacts
- Photovoltaic System Optimization Techniques
- Underwater Acoustics Research
- Plant-Microbe Interactions and Immunity
- Spinal Fractures and Fixation Techniques
- Spine and Intervertebral Disc Pathology
- Water Quality Monitoring and Analysis
- Plant Pathogenic Bacteria Studies
- Solar Radiation and Photovoltaics
- Advanced Measurement and Detection Methods
Universidad Complutense de Madrid
2012-2021
The Sky Quality Meter (SQM) has become the most common device to track evolution of brightness sky from polluted regions first class astronomical observatories. A vast database SQM measurements already exists for many places in world. Unfortunately, operates over a wide spectral band and its response interacts with sky's spectrum complex manner. This is why optical signals are difficult interpret when data recorded different sources artificial light. night linked way ground-based light...
Sensors on remote sensing satellites have provided useful tools for evaluation of the environmental impacts nighttime artificial light pollution. However, due to their panchromatic nature, data available from these sensors (VIIRS/DNB and DMSP/OLS) has a limited capacity accurately assess this impact. Moreover, in some cases, recorded variations can be misleading. Until new satellite platforms are available, only images taken with DSLR cameras International Space Station (ISS), airplanes,...
Consumer cameras, particularly onboard smartphones and UAVs, are now commonly used as scientific instruments. However, their data processing pipelines not optimized for quantitative radiometry calibration is more complex than that of cameras. The lack a standardized methodology limits the interoperability between devices and, in ever-changing market, ultimately lifespan projects using them. We present database (SPECTACLE) spectral radiometric calibrations consumer including linearity, bias...
We present the main features of TESS-W, first version a series inexpensive but reliable photometers that will be used to measure night sky brightness. The bandpass is extended red with respect Sky Quality Meter (SQM). TESS-W connects router via WIFI and it sends automatically brightness values data repository using Internet Things protocols. device includes an infrared sensor estimate cloud coverage. It designed for fixed stations monitor evolution photometer could also in local mode...
We develop a general optical model and describe the absolute radiometric calibration of readings provided by two widely-used night sky brightness sensors based on irradiance-to-frequency conversion. The involves precise determination overall spectral sensitivity devices also constant G relating output frequency light-to-frequency converter chip to actual band-weighted field-of-view averaged radiance incident detector (brightness). From these parameters, we show how define rigorous...
ABSTRACT Although the use of RGB photometry has exploded in last decades due to advent high-quality and inexpensive digital cameras equipped with Bayer-like colour filter systems, there is surprisingly no catalogue bright stars that can be used for calibration purposes. Since their excessive brightness, accurate enough spectrophotometric measurements typically cannot performed modern large telescopes, we have employed historical 13-colour medium-narrow-band photometric data, gathered quite...
Summary Light is pervasive in the leaf environment, creating opportunities for both plants and pathogens to cue into light as a signal regulate plant‐microbe interactions. enhances plant defences regulates opening of stomata, an entry point foliar bacterial such Pseudomonas syringae pv. tomato DC3000 ( PsPto ). The effect perception on gene expression virulence was investigated . induced genetic reprogramming that entailed significant changes stress tolerance virulence. Blue light‐mediated...
Night-time lights interact with human physiology through different pathways starting at the retinal layers of eye; from signals provided by rods; S-, L- and M-cones; intrinsically photosensitive ganglion cells (ipRGC). These individual photic channels combine in complex ways to modulate important physiological processes, among them daily entrainment neural master oscillator that regulates circadian rhythms. Evaluating relative excitation each type photoreceptor generally requires full...
Increased exposure to artificial light at night can affect human health including disruption of melatonin production and circadian rhythms which extend increased risks hormonal cancers other serious diseases. In addition, multiple negative impacts on fauna flora are well documented, it is a matter fact that nuisance for ground-based astronomy. These frequently linked the colour or more specifically its spectral content. Artificial often mapped by using spaceborne sensors, but most them...
Increased exposure to artificial light at night can affect human health including disruption of melatonin production and circadian rhythms extend increased risks hormonal cancers other serious diseases. In addition, multiple negative impacts on fauna flora are well documented, it is a matter fact that nuisance for ground-based astronomy. These frequently linked the colour or more specifically its spectral content. Artificial often mapped by using space borne sensors, but most them...
Night-time lights interact with human physiology through different pathways starting at the retinal layers of eye, from signals provided by rods, S-, L- and M-cones, intrinsically photosensitive ganglion cells (ipRGC). These individual photic channels combine in complex ways to modulate important physiological processes, among them daily entrainment neural master oscillator that regulates circadian rhythms. Evaluating relative excitation each type photoreceptor generally requires full...
A CCD test-bench has been built at the Universidad Complutense´s LICA laboratory. It is initially intended for commissioning of MEGARA<sup>1 </sup>(Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía) instrument but can be considered as a general purpose scientific test-bench. The uses an incandescent broad-band light source in combination with monochromator and two filter wheels to provide programmable narrow-band illumination across visible band. Light from directed integrating...