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17,434 Results Found

  • Article
  • Open Access
2 Citations
2,880 Views
13 Pages

12 March 2024

Artificial light at night (ALAN) is a major form of anthropogenic pollution, disrupting nocturnal wildlife behaviour and ecosystem function. Large construction sites are typically located at the intersection of urban and natural areas, introducing in...

  • Article
  • Open Access
1 Citations
1,647 Views
18 Pages

19 November 2024

The saliency feature is a key factor in achieving vision-based tracking for multi-UAV control. However, due to the complex and variable environments encountered during multi-UAV operations—such as changes in lighting conditions and scale variat...

  • Review
  • Open Access
58 Citations
6,650 Views
16 Pages

Light-Activated Heterostructured Nanomaterials for Antibacterial Applications

  • Chinmaya Mutalik,
  • Di-Yan Wang,
  • Dyah Ika Krisnawati,
  • Achmad Jazidie,
  • Sibidou Yougbare and
  • Tsung-Rong Kuo

30 March 2020

An outbreak of a bacterial contagion is a critical threat for human health worldwide. Recently, light-activated heterostructured nanomaterials (LAHNs) have shown potential as antibacterial agents, owing to their unique structural and optical properti...

  • Article
  • Open Access
7 Citations
5,760 Views
17 Pages

The Effect of Electric Bridge Lighting at Night on Mayfly Activity

  • Dorukalp Durmus,
  • Julian Wang,
  • Shawn Good and
  • Benjamin Basom

19 May 2021

Phototactic and polarotactic aquatic insects, such as mayflies, can be drawn to electric lighting on bridges at night. Past research investigating the effect of light intensity, polarization, and spectrum on mayflies suggests that a combination of di...

  • Review
  • Open Access
107 Citations
16,604 Views
53 Pages

18 November 2017

Conductometric gas sensors facilitated by photons have been investigated for decades. Light illumination may enhance device attributes including operational temperature, sensing sensitivity and selectivity. This paper aims to provide an overview on t...

  • Article
  • Open Access
4 Citations
2,336 Views
12 Pages

21 June 2022

Atractylodes macrocephala Koidz. is primarily used as a raw material in herbal medicine to treat digestive diseases. To improve the functionality of A. macrocephala, its growth patterns under artificial light were studied. A. macrocephala grew better...

  • Article
  • Open Access
57 Citations
6,518 Views
18 Pages

Impact of Light Intensity on Antioxidant Activity of Tropical Microalgae

  • Noémie Coulombier,
  • Elodie Nicolau,
  • Loïc Le Déan,
  • Cyril Antheaume,
  • Thierry Jauffrais and
  • Nicolas Lebouvier

18 February 2020

Twelve microalgae species isolated in tropical lagoons of New Caledonia were screened as a new source of antioxidants. Microalgae were cultivated at two light intensities to investigate their influence on antioxidant capacity. To assess antioxidant p...

  • Review
  • Open Access
548 Citations
30,480 Views
28 Pages

1 December 2014

Perovskite-based photocatalysts are of significant interest in the field of photocatalysis. To date, several perovskite material systems have been developed and their applications in visible light photocatalysis studied. This article provides a revie...

  • Article
  • Open Access
5 Citations
3,203 Views
13 Pages

Conventional pharmacology lacks spatial and temporal selectivity in terms of drug action. This leads to unwanted side effects, such as damage to healthy cells, as well as other less obvious effects, such as environmental toxicity and the acquisition...

  • Article
  • Open Access
8 Citations
8,792 Views
23 Pages

Influencing Activity of Bats by Dimly Lighting Wind Turbine Surfaces with Ultraviolet Light

  • Paul M. Cryan,
  • Paulo M. Gorresen,
  • Bethany R. Straw,
  • Syhoune (Simon) Thao and
  • Elise DeGeorge

21 December 2021

Wind energy producers need deployable devices for wind turbines that prevent bat fatalities. Based on the speculation that bats approach turbines after visually mistaking them for trees, we tested a potential light-based deterrence method. It is like...

  • Review
  • Open Access
209 Citations
17,541 Views
56 Pages

9 January 2020

This article provides an overview of current research into the development, synthesis, photocatalytic bacterial activity, biocompatibility and cytotoxic properties of various visible-light active titanium dioxide (TiO2) nanoparticles (NPs) and their...

  • Review
  • Open Access
69 Citations
6,046 Views
32 Pages

31 March 2021

The review deals with issues related to the principle of operation of resistive semiconductor gas sensors and the use of light activation instead of thermal heating when detecting gases. Information on the photoelectric and optical properties of nano...

  • Article
  • Open Access
2 Citations
3,498 Views
14 Pages

Light-Induced Oxidase Activity of DNAzyme-Modified Quantum Dots

  • Krzysztof Żukowski,
  • Joanna Kosman and
  • Bernard Juskowiak

1 November 2020

Here, we report the synthesis of a quantum dot (QD)-DNA covalent conjugate to be used as an H2O2-free DNAzyme system with oxidase activity. Amino-coupling conjugation was carried out between amino-modified oligonucleotides (CatG4-NH2) and carboxylate...

  • Article
  • Open Access
4 Citations
2,881 Views
8 Pages

The Amount of Light to Vigorous Physical Activity (Met’s-Hours/Day) in Children with and without Down Syndrome Attending Elementary School in Japan

  • Erika Yamanaka,
  • Takayo Inayama,
  • Kanzo Okazaki,
  • Tsubasa Nakada,
  • Michio Kojima,
  • Ichiro Kita and
  • Kazunori Ohkawara

Children with Down syndrome (DS) have physical characteristics such as hypotonus of the musculature. Therefore, their attainment rate of physical activity guidelines is low, and guidelines alone may not be sufficient in assessing the amount of physic...

  • Article
  • Open Access
33 Citations
3,802 Views
17 Pages

Preliminary Studies of Antimicrobial Activity of New Synthesized Hybrids of 2-Thiohydantoin and 2-Quinolone Derivatives Activated with Blue Light

  • Agnieszka Kania,
  • Waldemar Tejchman,
  • Anna M. Pawlak,
  • Krystian Mokrzyński,
  • Bartosz Różanowski,
  • Bogdan M. Musielak and
  • Magdalena Greczek-Stachura

5 February 2022

Thiohydantoin and quinolone derivatives have attracted researchers’ attention because of a broad spectrum of their medical applications. The aim of our research was to synthesize and analyze the antimicrobial properties of novel 2-thiohydantoin...

  • Article
  • Open Access
4 Citations
2,849 Views
14 Pages

4 August 2022

This study was conducted to evaluate the effects of different artificial light sources on the growth characteristics and various biological activities of the Atractylodes macrocephala x Atractylodes japonica hybrid cv. ‘Dachul’, which is...

  • Article
  • Open Access
36 Citations
3,771 Views
16 Pages

11 October 2020

It is significant to render visible-light photocatalytic activity to undoped ZnO nanostructures via intrinsic defect engineering. In this work, undoped ZnO nanocrystals were derived via co-precipitation synthesis. The resulting ZnO nanocrystals were...

  • Article
  • Open Access
67 Citations
8,363 Views
13 Pages

Pb-Free Cs3Bi2I9 Perovskite as a Visible-Light-Active Photocatalyst for Organic Pollutant Degradation

  • Bianca-Maria Bresolin,
  • Carsten Günnemann,
  • Detlef W. Bahnemann and
  • Mika Sillanpää

16 April 2020

In our work, we employed Cs3Bi2I9 as a visible-light-active photocatalyst, synthesized with a low-temperature solvothermal method. The morphological and structural properties of the as-prepared perovskite were investigated, and the results were compa...

  • Article
  • Open Access
49 Citations
7,477 Views
14 Pages

2 August 2013

The photocatalytic effect of TiO2 has great potential for the disinfection of surfaces. Most studies reported in the literature use UV activation of TiO2, while visible light has been used only in a few applications. In these studies, high concentrat...

  • Article
  • Open Access
2 Citations
2,631 Views
9 Pages

7 January 2021

ZnIn2S4 is known to be a visible light-active photocatalyst. In this work, it is shown that by substituting part of the In atoms with vanadium, the visible light range of photocatalytic activity of such material can be extended, using the so-called i...

  • Article
  • Open Access
24 Citations
12,144 Views
11 Pages

Development and Evaluation of Light-Weight Active Noise Cancellation Earphones

  • Sen M. Kuo,
  • Yi-Rou Chen,
  • Cheng-Yuan Chang and
  • Chien-Wen Lai

19 July 2018

This paper presents the development of active noise control (ANC) for light-weight earphones, and proposes using music or natural sound to estimate the critical secondary path model instead of extra random noise. Three types of light-weight ANC earph...

  • Article
  • Open Access
6 Citations
2,342 Views
12 Pages

As the risk of antibiotic-resistant bacteria increases, interest in non-antibiotic treatment is also increasing. Among the methods used in non-antibiotic therapy, natural antibiotics such as essential oils have disadvantages such as low efficiency. I...

  • Article
  • Open Access
42 Citations
7,774 Views
24 Pages

Light-Activated Liposomes Coated with Hyaluronic Acid as a Potential Drug Delivery System

  • Otto K. Kari,
  • Shirin Tavakoli,
  • Petteri Parkkila,
  • Simone Baan,
  • Roosa Savolainen,
  • Teemu Ruoslahti,
  • Niklas G. Johansson,
  • Joseph Ndika,
  • Harri Alenius and
  • Tatu Lajunen
  • + 2 authors

Light-activated liposomes permit site and time-specific drug delivery to ocular and systemic targets. We combined a light activation technology based on indocyanine green with a hyaluronic acid (HA) coating by synthesizing HA–lipid conjugates....

  • Article
  • Open Access
1 Citations
4,199 Views
14 Pages

24 October 2024

Catheter-associated urinary tract infections (CAUTIs) present significant health risks in medical settings, necessitating innovative solutions to prevent bacterial colonization on catheter surfaces. This study introduces a novel polymeric coating wit...

  • Article
  • Open Access
16 Citations
8,266 Views
9 Pages

Effects of Artificial Light at Night (ALAN) on European Hedgehog Activity at Supplementary Feeding Stations

  • Domhnall Finch,
  • Bethany R. Smith,
  • Charlotte Marshall,
  • Frazer G. Coomber,
  • Laura M. Kubasiewicz,
  • Max Anderson,
  • Patrick G. R. Wright and
  • Fiona Mathews

28 April 2020

Artificial light at night (ALAN) can have negative consequences for a wide range of taxa. However, the effects on nocturnal mammals other than bats are poorly understood. A citizen science camera trapping experiment was therefore used to assess the e...

  • Article
  • Open Access
10 Citations
3,138 Views
13 Pages

Effects of Light Intensity on Endogenous Hormones and Key Enzyme Activities of Anthocyanin Synthesis in Blueberry Leaves

  • Xiaoli An,
  • Tianyu Tan,
  • Xinyu Zhang,
  • Xiaolan Guo,
  • Yunzheng Zhu,
  • Zejun Song and
  • Delu Wang

Plant anthocyanin is a secondary metabolite widely distributed in the roots, stems, leaves, flowers and fruits of plants, and its synthesis is significantly affected by light intensity. To reveal the physiological response mechanism of anthocyanin sy...

  • Proceeding Paper
  • Open Access
1,689 Views
3 Pages

The Influence of Temperature and Visible Light Activation on the NO2 Response of WO3 Nanofibers Prepared by Electrospinning

  • Valentina Paolucci,
  • Seyed Mahmoud Emamjomeh,
  • Umberto Anselmi-Tamburini and
  • Carlo Cantalini

Aim of this work is to compare the electrical responses to 100–400 ppb NO2 gas concentrations of WO3 electrospun nanofibers both activated by thermal (in the temperature range 25–100 °C) and/or visible light at different wavelengths (Red λ = 670 nm,...

  • Article
  • Open Access
23 Citations
3,584 Views
15 Pages

The aging of the population is increasing the load on the healthcare system, and enhancing light physical activity among older adults can alleviate this problem. This study used medical examination data from 1773 older adults in Lanzhou city (China)...

  • Article
  • Open Access
13 Citations
4,115 Views
17 Pages

Red-Light Irradiation of Horse Spermatozoa Increases Mitochondrial Activity and Motility through Changes in the Motile Sperm Subpopulation Structure

  • Jaime Catalán,
  • Marion Papas,
  • Sabrina Gacem,
  • Yentel Mateo-Otero,
  • Joan E. Rodríguez-Gil,
  • Jordi Miró and
  • Marc Yeste

29 August 2020

Previous studies in other mammalian species have shown that stimulation of semen with red-light increases sperm motility, mitochondrial activity, and fertilizing capacity. This study sought to determine whether red-light stimulation using a light emi...

  • Article
  • Open Access
32 Citations
5,801 Views
15 Pages

Aspergillus flavus and A. parasiticus are the main causes of aflatoxin contamination in various foods, particularly grains, as they can thrive in environments with lower water activity and higher temperatures. The growth of Aspergillus and the format...

  • Article
  • Open Access
7 Citations
2,241 Views
15 Pages

Influence of the Metabolic Activity of Microorganisms on Disinfection Efficiency of the Visible Light and P25 TiO2 Photocatalyst

  • Sandra Sakalauskaite,
  • Deimante Vasiliauske,
  • Emilija Demikyte,
  • Rimantas Daugelavicius and
  • Martynas Lelis

25 November 2021

The beneficial photocatalytic properties of UV light activated TiO2 powder are well-known and have been demonstrated with various pollutants and pathogens. However, traditionally observed photocatalytic activity of visible light activated pristine Ti...

  • Proceeding Paper
  • Open Access
1 Citations
2,427 Views
4 Pages

Visible Light Activated Room Temperature Gas Sensors Based on CaFe2O4 Nanopowders

  • Qomaruddin,
  • Cristian Fàbrega,
  • Andreas Waag,
  • Andris Šutka,
  • Olga Casals,
  • Hutomo Suryo Wasisto and
  • Joan Daniel Prades

Gas sensors based on CaFe2O4 nanopowders, which are p–type metal oxide semiconductor (MOX), have been fabricated and assessed for ethanol gas monitoring under visible light activation at room temperature. Regardless of their inferior sensitivit...

  • Article
  • Open Access
34 Citations
7,515 Views
13 Pages

The Energy Audit Activity Focused on the Lighting Systems in Historical Buildings

  • Giacomo Salvadori,
  • Fabio Fantozzi,
  • Michele Rocca and
  • Francesco Leccese

27 November 2016

The energy audit for a building is a procedure designed mainly to obtain adequate knowledge of the energy consumption profile, identify, and quantify opportunities for energy savings by a cost-benefit analysis and report, clearly and comprehensively,...

  • Article
  • Open Access
509 Views
20 Pages

24 November 2025

Background: Light is an important environmental signal that regulates the growth and metabolism of fungi. This study aims to reveal the molecular regulatory mechanism of different light durations on the growth activity of Poria cocos. Methods: By set...

  • Article
  • Open Access
11 Citations
3,631 Views
15 Pages

9 June 2021

For 10 days before harvest, supplemental 50 μmol m−2 s−1 blue light (430 nm) was applied in greenhouse conditions in order to evaluate the influences of pre-harvest supplemental blue light on both antioxidants and nutrition of the flower stalk of Chi...

  • Article
  • Open Access
4 Citations
2,548 Views
18 Pages

Dendrobium hybrids have a significant role in the present floral sector. The aim of this research was to evaluate how various light qualities affect the physiological and biochemical traits of Dendrobium ‘Shuijing’. In order to determine...

  • Article
  • Open Access
761 Views
25 Pages

In the context of increasing urban night lighting, the phenomenon of light trespass in residential areas is becoming increasingly serious, affecting the night comfort and circadian rhythm of residents. Aiming at this problem, this paper takes the nig...

  • Article
  • Open Access
2 Citations
1,131 Views
17 Pages

Laser-Prepared ZnO-Ag Nanoparticles with High Light-Enhanced Antibacterial Activity

  • Anastasia V. Volokitina,
  • Elena D. Fakhrutdinova,
  • Daria A. Goncharova,
  • Sergei A. Kulinich and
  • Valery A. Svetlichnyi

29 June 2025

Recently, the urgency of combating antibiotic-resistant bacteria, viruses, and other pathogens has dramatically increased. With the development of nanotechnology, significant hopes are placed on nanoparticles with antimicrobial properties. The effici...

  • Article
  • Open Access
18 Citations
5,150 Views
15 Pages

This study aimed to determine the optimal light conditions for the protected cultivation of Centella asiatica—a herbaceous medicinal plant with high bioactive content and antioxidant potential. The growth, triterpene glycoside content, total ph...

  • Article
  • Open Access
2 Citations
2,160 Views
13 Pages

The BcWCL1 protein is a blue-light photoreceptor from the fungus Botrytis cinerea. This protein has a central role in B. cinerea circadian regulation and is an ortholog to WC-1 from Neurospora crassa. The BcWCL1 and WC-1 proteins have similar protein...

  • Article
  • Open Access
4 Citations
1,457 Views
15 Pages

Influence of Optically Active Substances on Light Attenuation in a Tropical Eutrophic Urban Reservoir

  • Renata C. H. Amancio,
  • Stella P. Pacheco,
  • Karen A. F. Moura,
  • Bianca L. Valle,
  • Julia T. C. Alves,
  • Fernanda F. Melo,
  • Vitor J. G. Silva,
  • Lívia S. Botelho,
  • Raquel T. Rocha and
  • José F. Bezerra-Neto
  • + 13 authors

This study investigated the impact of optically active substances on light attenuation in a tropical eutrophic urban reservoir under different seasonal conditions. Diffuse attenuation coefficients for photosynthetically active radiation (KdPAR) and u...

  • Article
  • Open Access
945 Views
13 Pages

16 June 2025

Fe-doped BiOBr nanomaterials with varying Fe concentrations were synthesized using a solvothermal method. Paracetamol (APAP) was selected as the target pollutant to evaluate the visible-light-driven peroxydisulfate (PDS) activation performance of the...

  • Article
  • Open Access
7 Citations
3,550 Views
11 Pages

Study of Light-Activated Regioregular Poly(3-Hexyltiophene) Photoconductive Polymer Sensing Properties in Nerve Agent Simulant (DMMP) Detection

  • Paulina Powroznik,
  • Wiesław Jakubik,
  • Agnieszka Stolarczyk,
  • Anna Kazmierczak-Balata,
  • Jaroslaw Wrotniak and
  • Tomasz Jarosz

15 January 2020

In the present work, we report the use of regioregular poly(3-hexyltiophene) polymer (RR-P3HT) as a potential light-activated material for sensing the chemical nerve agent simulant dimethyl methylphosphonate (DMMP). The electrical response of thick f...

  • Article
  • Open Access
7 Citations
6,811 Views
17 Pages

The Effect of Bright Light Treatment on Rest–Activity Rhythms in People with Dementia: A 24-Week Cluster Randomized Controlled Trial

  • Eirin Kolberg,
  • Ståle Pallesen,
  • Gunnhild Johnsen Hjetland,
  • Inger Hilde Nordhus and
  • Elisabeth Flo-Groeneboom

13 September 2021

Bright light treatment is an effective way to influence circadian rhythms in healthy adults, but previous research with dementia patients has yielded mixed results. The present study presents a primary outcome of the DEM.LIGHT trial, a 24-week random...

  • Article
  • Open Access
11 Citations
3,754 Views
10 Pages

Light-activated nanozymes possess several advantages, such as light-mediated activity regulation, utilization of molecular oxygen as a green oxidant, and highly enhanced activity; however, the types of light-activated nanozymes are still limited. In...

  • Article
  • Open Access
1,332 Views
14 Pages

21 August 2025

The treatment of organic phosphate ester (OPE) pollutants in water is a challenging but highly necessary task. In this study, an advanced oxidation process through light activation of peroxymonosulfate (PMS) involving graphene oxide (GO) as a promote...

  • Article
  • Open Access
15 Citations
3,382 Views
9 Pages

Electrochemically Deposited Zinc (Tetraamino)phthalocyanine as a Light-activated Antimicrobial Coating Effective against S. aureus

  • Ivan Gusev,
  • Marli Ferreira,
  • Davy-Louis Versace,
  • Samir Abbad-Andaloussi,
  • Sandra Pluczyk-Małek,
  • Karol Erfurt,
  • Alicja Duda,
  • Przemysław Data and
  • Agata Blacha-Grzechnik

27 January 2022

Light-activated antimicrobial coatings are currently considered to be a promising approach for the prevention of nosocomial infections. In this work, we present a straightforward strategy for the deposition of a photoactive biocidal organic layer of...

  • Article
  • Open Access
9 Citations
3,043 Views
12 Pages

Effects of LED Light Spectra on the Development, Phytochemical Profile, and Antioxidant Activity of Curcuma longa from Easter Island

  • María José Marchant,
  • Paula Molina,
  • Miriam Montecinos,
  • Leda Guzmán,
  • Cristóbal Balada and
  • Mónica Castro

13 October 2022

Curcuma longa (C. longa), an herbaceous plant used for medicinal purposes by the indigenous people of Easter Island, has been overexploited in its natural habitat, leading to its conservation status being designated as a vulnerable species. We have r...

  • Article
  • Open Access
3 Citations
2,919 Views
12 Pages

Mechanistic Exploration of Visible Light-Activated Carbon/TiO2 Hybrid Dots Damaging Bacterial Cells

  • Audrey F. Adcock,
  • Weixiong Liang,
  • Peter A. Okonjo,
  • Xiuli Dong,
  • Kirkland Sheriff,
  • Ping Wang,
  • Isaiah S. Ferguson,
  • Shiou-Jyh Hwu,
  • Ya-Ping Sun and
  • Liju Yang

25 September 2022

The carbon/TiO2 hybrid dots (C/TiO2-Dots) are structurally TiO2 nanoparticles (in the order of 25 nm in diameter from commercially available colloidal TiO2 samples) surface-attached by nanoscale carbon domains with organic moieties, thus equivalent t...

  • Communication
  • Open Access
11 Citations
3,282 Views
12 Pages

Due to remarkable socioeconomic development, an increasing number of karst rocky desertification areas have been severely affected by human activities in southern China. Effectively analyzing human activities in karst rocky desertification areas is a...

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