Results 71 to 80 of about 8,027 (200)

Characterization of Grape Cane Stilbenoids and Their Photo‐Degradation Products by HPLC‐DAD Coupled With Trapped Ion Mobility Spectrometry and High‐Resolution Tandem Mass Spectrometry

open access: yesRapid Communications in Mass Spectrometry, Volume 40, Issue 15, 15 August 2026.
ABSTRACT Rationale Bioactive (E)‐stilbenoids in vine extracts are prone to light‐induced transformation into the respective (Z)‐isomers and further degradation products, often resulting in a loss of bioactivity. We sought to study stilbenoid degradation beyond that of the well‐researched resveratrol due to the high diversity of stilbenoids in nature ...
Paul Besrukow   +3 more
wiley   +1 more source

The impact of the inclination angle of perforated screen facade on daylight performance in the tropics

open access: yesJurnal Ilmiah SINERGI
Daylighting is one of the fundamental aspects of green building principles. Utilizing daylighting in a building offers numerous benefits, including energy efficiency, enhanced comfort, improved workplace productivity, better health, and increased ...
Feny Elsiana, Danny Santoso Mintorogo
doaj   +1 more source

Bandwidth and BER Improvement Employing a Pre-Equalization Circuit with White LED Arrays in a MISO VLC System

open access: yesApplied Sciences, 2019
This paper aims to extend the limited bandwidth of phosphorescent white LEDs for a multiple-input single-output (MISO) visible light communication (VLC) system.
Monette H. Khadr   +3 more
doaj   +1 more source

N‐Annulated Perylene Diimide Emitters for High‐Performance Peroxyoxalate/H2O2 Chemiluminescence

open access: yesLuminescence, Volume 41, Issue 8, August 2026.
Spooling chemiluminescence (CL) spectroscopy has been utilized to investigate two N‐annulated perylene diimide (PDI) dimers with hexyl linear alkyl chains (PDI‐1) and 2,4,6‐trimethylbenzyl sidechains (PDI‐2) at the pyrrolic N‐positions, on their CL reaction mechanism, illuminant decay and absolute CL efficiencies.
Xiaoli Qin   +8 more
wiley   +1 more source

Research on the coupling effect of lighting and thermal environment under learning behavior

open access: yesResults in Engineering
Influence of multi-factor interaction on the comfort and learning efficiency are gradually receiving attention. Therefore, the interaction of PMV, color temperature and illuminance, and their effects on the lighting comfort, thermal comfort and learning ...
Shiya Zhao   +5 more
doaj   +1 more source

SI physiological units

open access: yesInternational Journal of Metrology and Quality Engineering, 2015
One of the seven base units of the International System of Units (SI), the candela, which is the unit of the luminous intensity, and its derived units are physiological units.
Pellegrino O.   +3 more
doaj   +1 more source

Model Calibration Methodology to Assess the Actual Lighting Conditions of a Road Infrastructure

open access: yesInfrastructures, 2019
Street lighting plays an important role in the comfort and safety of drivers and pedestrians, so the control and management of the lighting systems operation and consumption is an essential service for a city. In this document, a methodology is presented
Ana Ogando-Martínez   +4 more
doaj   +1 more source

The Effects of Suspended Sediments, Dye, and Their Variation on Fish Behavior

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
Human activities are affecting the visual environments of freshwater ecosystems by introducing visual pollutants such as artificial dyes and elevated suspended sediment levels. Our research shows that dyes and suspended sediments can have contrasting effects of fish behavior, with dye increasing and sediments decreasing movement.
Hannah M. Anderson   +3 more
wiley   +1 more source

Bio‐inspired artificial retina with receptive fields for in‐sensor multiply‐and‐accumulate operations

open access: yesInfoMat, Volume 8, Issue 8, August 2026.
We developed a bio‐inspired artificial retina in which curved artificial receptive fields composed of perovskite photoconductors perform multiply‐and‐accumulate operations through in‐sensor computing. This architecture simultaneously realized the structural efficiency of human eyes (compact single‐lens imaging system) and functional advantages of ...
Jisang Ha   +8 more
wiley   +1 more source

Thermal and Lighting Consumption Savings in Classrooms Retrofitted with Shading Devices in a Hot Climate

open access: yesEnergies, 2018
Most educational buildings in southern Spain do not meet current energy requirements as weak thermal envelopes and the lack of cooling systems lead to severe discomfort in classrooms, especially when temperatures are above 30 °C.
Carmen María Calama-González   +2 more
doaj   +1 more source

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