نتایج جستجو برای: ultraviolet light traps

تعداد نتایج: 441536  

Journal: :Journal of Japan Society on Water Environment 1995

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In this paper, the bismuth vanadate (BiVO4) nanoparticles were synthesized at 600 °C calcination temperature by co-precipitation method. To study the crystal structure, morphology, optical and photocatalytic properties of the samples, the X-ray diffraction analysis, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy and ult...

2010
Carl T. Kloock Abraham Kubli

The hypothesis that fluorescence in scorpions functions in the detection of ultraviolet light was tested. We reduced the fluorescence of scorpions by prolonged exposure to ultraviolet light on a 16:8 h light:dark cycle and compared their activity levels and light environment choices to unmodified scorpions in simple arenas that were half in shadow and half exposed to light. Three different ligh...

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
a. n. shah g. yunshan f. h. shah h. u. mughal a. naveed

two continuously regenerating traps crt-a and crt-b were evaluated under the controlled carbonyl emissions from a turbocharged diesel engine run on an ac electrical dynamometer. the gas-phase carbonyls were taken in silica gel cartridges coated with 2,4-dinitrophenylhydrazine both upstream (baseline) and downstream of the traps, and a total of fourteen carbonyls were identified and then quantif...

Journal: :Journal of the American Mosquito Control Association 1997
R Vaidyanathan J D Edman

To estimate human exposure to potential vectors of eastern equine encephalomyelitis (EEE) virus, we compared collections of putative EEE virus vectors from human biting collections with collections from CDC, AB (American Biophysics), and New Jersey light traps and resting boxes in enzootic/epidemic foci of EEE virus in southeastern Massachusetts. Human biting collections caught significantly mo...

Journal: :Horticulturae 2023

Tuta absoluta (Meyrick), a leafminer that damages tomato leaves, terminal buds, flowers, and fruits, is destructive pest responsible for 80–100% of yield losses globally. Different insect species have different courtship responses phototropic flight rhythms. Improving the trapping effects sex pheromone light traps important constructing an IPM system T. absoluta. The present study explored hour...

Journal: :Optics letters 2011
Christina Hesseling Mike Woerdemann Andreas Hermerschmidt Cornelia Denz

Computer-generated holograms displayed by phase-modulating spatial light modulators have become a well-established tool for beam shaping purposes in holographic optical tweezers. Still, the generation of light intensity patterns with high spatial symmetry and simultaneously without interfering ghost traps is a challenge. We have implemented an iterative Fourier transform algorithm that is capab...

Journal: :Chinese Physics 2022

Persistent phosphor as a kind of light-emitting material can store excitation energy in the so-called traps, and then persistently release form light emission after end excitation. This is called persistent luminescence. Much attention has been paid to optimizing performance phosphors, including wavelength time. However, research on for charging phosphors relatively lacking. To acquire luminesc...

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