Effects of Blue-Light Laser Irradiation on the Enzymatic Activities and Sporulation of Trichoderma atroviride Grown on Rice Husks DOI Creative Commons

Ioana-Alexandra Bala,

Naomi Tritean,

Alin Enache

et al.

Applied Sciences, Journal Year: 2023, Volume and Issue: 13(16), P. 9191 - 9191

Published: Aug. 12, 2023

Light is known to impact various aspects of Trichoderma, with possible implications for industrial and agricultural applications. In this study, we investigated the irradiation Trichoderma atroviride blue light using a laser source system. We determined cellulase protease activities effects UV–Vis absorption filtrated culture on conidia formation, dimension, behavior, apparent chlamydospore abundance, as function duration, dose irradiation, moment irradiation. show that enzymatic range from positive neutral negative. Compared previous studies, our stimulation does not drastic negative effect (CMC-ase) activity, but it seems delay maximum activity over time. The proteases are partially in agreement only study reported activity. number increased upon representing an expected first time best knowledge dimensions also increase. Our data suggest highest resulted clustering around liquid–air interface, suggesting hydrophobic character.

Language: Английский

An optical system to detect, surveil, and kill flying insect vectors of human and crop pathogens DOI Creative Commons
Joseph M. Patt,

Arty Makagon,

Bryan Norton

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 8, 2024

Abstract Sustainable and effective means to control flying insect vectors are critically needed, especially with widespread insecticide resistance global climate change. Understanding controlling requires accurate information about their movement activity, which is often lacking. The Photonic Fence (PF) an optical system that uses machine vision, infrared light, lasers identify, track, interdict in flight. PF examines insect’s outline, flight speed, other parameters if these match those of a targeted vector species, then low-power, retina-safe laser kills it. We report on proof-of-concept tests large, field-sized (30 mL × 3 mH) conducted Aedes aegypti , mosquito transmits dangerous arboviruses, Diaphorina citri psyllid the fatal huanglongbing disease citrus. In engaged, < 1% 3% A . D respectfully, were recovered versus 38% 19% recovery when lacer was silenced. tracked, but did not intercept orchid bee, Euglossa dilemma effectively intercepted vectors, bees, at distance 30 m, heralding use photonic energy, rather than chemicals, vectors.

Language: Английский

Citations

3
Temperature Dependency of Insect’s Wingbeat Frequencies: An Empirical Approach to Temperature Correction DOI Creative Commons
Topu Saha, Adrien P. Genoud,

J. H. Park

et al.

Insects, Journal Year: 2024, Volume and Issue: 15(5), P. 342 - 342

Published: May 10, 2024

This study examines the relationship between wingbeat frequency of flying insects and ambient temperature, leveraging data from over 302,000 insect observations obtained using a near-infrared optical sensor during an eight-month field experiment. By measuring as well wing body cross-sections each in conjunction with we identified five clusters analyzed how their average frequencies evolved temperatures ranging 10 °C to 38 °C. Our findings reveal positive correlation temperature frequency, more pronounced increase observed at higher frequencies. Frequencies increased on by 2.02 Hz/°C 50 Hz, up 9.63 525 general model is proposed. offers valuable tool for correcting enhancing accuracy clustering acoustic sensors. While this approach does not account species-specific responses changes, our research provides insight, based all species present experiment, into intricate dynamics flight behavior relation environmental factors.

Language: Английский

Citations

2
Sustainable laser technology for the control of organisms and microorganisms in agri-food systems: a review DOI Creative Commons
C. Hernández-Aguilar, A. Domínguez-Pacheco, Rumen Ivanov Tsonchev

et al.

International Agrophysics, Journal Year: 2024, Volume and Issue: 38(1), P. 87 - 119

Published: Feb. 6, 2024

1. Abawi G.S., and Widmer T.L., 2000. Impact of soil health management practices on soilborne pathogens, nematodes, root diseases vegetable crops. Appl. Soil Ecol., 15, 37-47. https://doi.org/10.1016/S0929-.... CrossRef Google Scholar

Language: Английский

Citations

1
Monitoring Mosquito Abundance: Comparing an Optical Sensor with a Trapping Method DOI Creative Commons
Topu Saha, Adrien P. Genoud, Greg Williams

et al.

Insects, Journal Year: 2024, Volume and Issue: 15(8), P. 584 - 584

Published: Aug. 1, 2024

Optical sensors have shown significant promise in offering additional data to track insect populations. This article presents a comparative study between abundance measurements obtained from novel near-infrared optical sensor and physical traps. The instrument, named an Entomological Bistatic Sensor System, or eBoss, is non-destructive operating the spectral range designed continuously monitor population of flying insects. research compares mosquito aerial density (#/m3) through eBoss with trap counts eight traps during eight-month field study. recorded over 302,000 sightings assessed all airborne insects as well male female mosquitoes specifically resolution one minute. capability allows for monitoring trends throughout season daily activity peaks. results affirmed correlation two methods. While instruments do not match terms taxonomic accuracy, offered greater temporal (one minute versus roughly three days) statistical significance owing its much larger sample size. These outcomes further indicate that entomological can provide valuable complementary more common methods populations, such pollinators.

Language: Английский

Citations

0
Design and Construction of an Affordable Optical Power Meter: Micro- to Milli-Watt in the 400-800 nm Range DOI

Juracy L dos Santos,

Ian R Andrade,

Lucas H P Silva

et al.

Measurement Science and Technology, Journal Year: 2024, Volume and Issue: 35(8), P. 085208 - 085208

Published: May 22, 2024

Abstract This study introduces the design, construction, and evaluation of an affordable optical power meter prototype, AYR (Affordable Yet Reliable) version 1.0, which operates effectively within 400–800 nm range, using a silicon photodiode. Aimed at bridging gap in accessibility to precise reliable photonics instrumentation, especially resource-constrained settings, 1.0 leverages advancements photodiode technology, additive manufacturing, do-it-yourself electronics. The device incorporates custom-built electronic circuit that facilitates accurate measurement by converting light into electrical current. Through rigorous testing against commercial meter, demonstrated exceptional accuracy reliability. Sensitivity values ranged from ∼13 μA mW −1 405 ∼796 805 nm. operational range spanned 0.003 242.0 mW, with linearity ( R 2 ) consistently above 0.9981, indicating high fidelity measurement. Repeatability percentages varied between 99.4% 99.9%, response times up 55 μs, showcasing prototype’s rapid changes power. key components include low-cost (2DU10), differential trans-impedance amplifier for signal processing, 3D-printed housing sensor head console, contributing its cost-effectiveness robustness. total cost was 116 US dollars, highlighting affordability potential widespread adoption.

Language: Английский

Citations

0
Effects of Blue-Light Laser Irradiation on the Enzymatic Activities and Sporulation of Trichoderma atroviride Grown on Rice Husks DOI Creative Commons

Ioana-Alexandra Bala,

Naomi Tritean,

Alin Enache

et al.

Applied Sciences, Journal Year: 2023, Volume and Issue: 13(16), P. 9191 - 9191

Published: Aug. 12, 2023

Light is known to impact various aspects of Trichoderma, with possible implications for industrial and agricultural applications. In this study, we investigated the irradiation Trichoderma atroviride blue light using a laser source system. We determined cellulase protease activities effects UV–Vis absorption filtrated culture on conidia formation, dimension, behavior, apparent chlamydospore abundance, as function duration, dose irradiation, moment irradiation. show that enzymatic range from positive neutral negative. Compared previous studies, our stimulation does not drastic negative effect (CMC-ase) activity, but it seems delay maximum activity over time. The proteases are partially in agreement only study reported activity. number increased upon representing an expected first time best knowledge dimensions also increase. Our data suggest highest resulted clustering around liquid–air interface, suggesting hydrophobic character.

Language: Английский

Citations

0