keyword
MENU ▼
Read by QxMD icon Read
search

Artificial lighting

keyword
https://www.readbyqxmd.com/read/29149117/-influence-of-titanium-dioxide-activated-under-visible-light-on-survival-of-mold-fungi
#1
Daria Kądziołka, Paulina Rokicka, Agata Markowska-Szczupak, Antoni W Morawski
BACKGROUND: In public and residential buildings, fungi are usually found in the dust or growing on building materials medium such. It has been known that a number of their spores may contaminate the indoor environment and deteriorate air quality in accommodation spaces. Previously designed air cleaning systems do not guarantee a complete removal of agents harmful to humans and animals. Therefore, there is a great need to develop a new solution to remove molds from indoor air. In recent years, photocatalysis based on titanium dioxide (TiO<sub>2</sub>) has been proposed as an effective method for air pollutants removal...
November 17, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/29144171/circadian-gene-methylation-in-rotating-shift-nurses-a-cross-sectional-study
#2
Edyta Reszka, Edyta Wieczorek, Monika Przybek, Ewa Jabłońska, Paweł Kałużny, Agnieszka Bukowska-Damska, Shanbeh Zienolddiny, Beata Pepłońska
Investigating the methylation status of the circadian genes may contribute to a better understanding of the shift work-related circadian disruption in individuals exposed to artificial light at night. In the present study, we determined the methylation status of the circadian genes associated with a shift work pattern among nurses and midwives participating in a cross-sectional study in Lodz, Poland. Quantitative methylation polymerase chain reaction assays were used to assess promoter CpG methylation in PER1, PER2, PER3, CRY1, CRY2, BMAL1, CLOCK, and NPAS2 in genomic DNA from whole blood of 347 women having a rotating-shift work schedule and 363 women working days only...
November 16, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29143429/an-overview-of-methods-to-mitigate-artifacts-in-optical-coherence-tomography-imaging-of-the-skin
#3
Saba Adabi, Audrey Fotouhi, Qiuyun Xu, Steve Daveluy, Darius Mehregan, Adrian Podoleanu, Mohammadreza Nasiriavanaki
BACKGROUND: Optical coherence tomography (OCT) of skin delivers three-dimensional images of tissue microstructures. Although OCT imaging offers a promising high-resolution modality, OCT images suffer from some artifacts that lead to misinterpretation of tissue structures. Therefore, an overview of methods to mitigate artifacts in OCT imaging of the skin is of paramount importance. Speckle, intensity decay, and blurring are three major artifacts in OCT images. Speckle is due to the low coherent light source used in the configuration of OCT...
November 16, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29141058/disparity-in-cutaneous-pigmentary-response-to-led-vs-halogen-incandescent-visible-light-results-from-a-single-center-investigational-clinical-trial-determining-a-minimal-pigmentary-visible-light-dose
#4
Teo Soleymani, David E Cohen, Lorcan M Folan, Uchenna R Okereke, Nada Elbuluk, Nicholas A Soter
<p>Background: While most of the attention regarding skin pigmentation has focused on the effects of ultraviolet radiation, the cutaneous effects of visible light (400 to 700nm) are rarely reported. OBJECTIVE: The purpose of this study was to investigate the cutaneous pigmentary response to pure visible light irradiation, examine the difference in response to different sources of visible light irradiation, and determine a minimal pigmentary dose of visible light irradiation in melanocompetent subjects with Fitzpatrick skin type III - VI...
November 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29136904/a-light-up-fluorescent-probe-for-citrate-detection-based-on-bispyridinum-amides-with-aggregation-induced-emission-feature
#5
Chenchen Liu, Yandi Hang, Tao Jiang, Ji Yang, Xiao Zhang, Jianli Hua
Citrate is an important intermediate in the citric acid cycle, a vital metabolic pathway for animals, plants and bacteria. It is of great significance to detect its levels in human beings because several diseases may cause the abnormal of citrate. In this paper, a new turn-on fluorescent sensor (TPE-Py) using the classic tetraphenylethylene (TPE) as the aggregation-induced emission (AIE) fluorophore and bipyridinium-based amides as the recognition receptor has been synthesized for the detection of citrate. The probe exhibits good selectivity and sensitivity to citrate with a relatively low detection limit (1...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29134759/ni-nanocluster-modified-black-tio2-with-dual-active-sites-for-selective-photocatalytic-co2-reduction
#6
Tadesse Billo, Fang-Yu Fu, Putikam Raghunath, Indrajit Shown, Wei-Fu Chen, Hsiang-Ting Lien, Tzu-Hsien Shen, Jyh-Fu Lee, Ting-Shan Chan, Kuo-You Huang, Chih-I Wu, M C Lin, Jih-Shang Hwang, Chih-Hao Lee, Li-Chyong Chen, Kuei-Hsien Chen
One of the key challenges in artificial photosynthesis is to design a photocatalyst that can bind and activate the CO2 molecule with the smallest possible activation energy and produce selective hydrocarbon products. In this contribution, a combined experimental and computational study on Ni-nanocluster loaded black TiO2 (Ni/TiO2[Vo] ) with built-in dual active sites for selective photocatalytic CO2 conversion is reported. The findings reveal that the synergistic effects of deliberately induced Ni nanoclusters and oxygen vacancies provide (1) energetically stable CO2 binding sites with the lowest activation energy (0...
November 14, 2017: Small
https://www.readbyqxmd.com/read/29129126/chronic-circadian-misalignment-without-circadian-arrhythmicity-or-sleep-deprivation-does-not-impair-adult-hippocampal-neurogenesis
#7
Phan Q Duy, Samer Hattar
Artificial light in modern society has led to the ubiquity of light exposure at night as individuals work night shifts and use light-emitting electronic devices before bedtime. These aberrant light conditions have detrimental consequences on cognitive and mental health, compelling the need to understand the mechanisms by which light affects brain functions. Although it was believed that aberrant light impairs health by first disrupting circadian rhythms and sleep, we showed that chronic exposure to a light cycle termed T7 (3...
November 1, 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/29127414/orthogonal-navigation-of-multiple-visible-light-driven-artificial-microswimmers
#8
Jing Zheng, Baohu Dai, Jizhuang Wang, Ze Xiong, Ya Yang, Jun Liu, Xiaojun Zhan, Zhihan Wan, Jinyao Tang
Nano/microswimmers represent the persistent endeavors of generations of scientists towards the ultimate tiny machinery for device manufacturing, targeted drug delivery, and noninvasive surgery. In many of these envisioned applications, multiple microswimmers need to be controlled independently and work cooperatively to perform a complex task. However, this multiple channel actuation remains a challenge as the controlling signal, usually a magnetic or electric field, is applied globally over all microswimmers, which makes it difficult to decouple the responses of multiple microswimmers...
November 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/29124824/why-artificial-light-at-night-should-be-a-focus-for-global-change-research-in-the-21st-century
#9
Thomas W Davies, Tim Smyth
The environmental impacts of artificial light at night have been a rapidly growing field of global change science in recent years. Yet, light pollution has not achieved parity with other global change phenomena in the level of concern and interest it receives from the scientific community, government and nongovernmental organizations. This is despite the globally widespread, expanding and changing nature of night-time lighting and the immediacy, severity and phylogenetic breath of its impacts. In this opinion piece, we evidence 10 reasons why artificial light at night should be a focus for global change research in the 21st century...
November 10, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29124691/polymorphous-light-eruption
#10
Marcella Guarrera
Polymorphous light eruption (PLE) is the commonest immuno-mediated photodermatosis. It occurs after solar or artificial UV-light exposure and affects only the sun-exposed areas with preference of the V-area of the chest, of arms and forearms, legs, upper part of the back, and rarely the face. The lesions are itching or burning, and vary morphologically from erythema to papules, vesico-papules and occasionally blisters, plaques, sometimes erythema multiforme-like, insect bite-like wheals and purpura. The clinical manifestations befall within a few hours to days from light exposure, last a few days, and subside in about a week without sequelae...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29122949/the-effects-of-extended-crawling-on-the-physiology-and-swim-performance-of-loggerhead-and-green-sea-turtle-hatchlings
#11
Karen Pankaew, Sarah L Milton
Following emergence from the nest, sea turtle hatchling dispersal can be disrupted by artificial lights or skyglow from urban areas. Mis- or disorientation may increase exposure to predation, thermal stress, and dehydration, and consume valuable energy, thus decreasing the likelihood of survival. In this study hatchlings were run on a treadmill for 200m or 500m to investigate the physiological impacts of disorientation crawling on loggerhead (Caretta caretta) and green (Chelonia mydas) sea turtle hatchlings...
November 9, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29122177/ascospore-release-in-apple-scab-underlies-infrared-sensation
#12
Katja Ehlert, Meike Piepenbring, Andreas Kollar
The agent of apple scab disease (Venturia inaequalis) is the most common pathogen in apple cultivation. Its ascospores are released in spring, mainly during daylight hours and triggered by rain events. To investigate the causes of diurnal rhythm of ascospore dissemination of the apple scab fungus ascospore releases were examined continuously with spore traps in the orchard and with laboratory assays. One of the spore traps was illuminated at night with different light sources in each year during 2011-2015. The laboratory assays were performed with different light sources with varying wavelengths and intensities...
December 2017: Fungal Biology
https://www.readbyqxmd.com/read/29117235/variability-of-surface-and-underwater-nocturnal-spectral-irradiance-with-the-presence-of-clouds-in-urban-and-peri-urban-wetlands
#13
Jean Secondi, Valentin Dupont, Aurélie Davranche, Nathalie Mondy, Thierry Lengagne, Marc Théry
Artificial light at night (ALAN) is an increasing phenomenon worldwide. It causes a wealth of biological and ecological effects that may eventually affect populations and ecosystems. Despite the growing concern about ALAN, little is known about the light levels species are exposed to at night, especially for wetlands and underwater habitats. We determined nocturnal irradiance in urban and peri-urban wetlands above and under water, and assessed the effect of cloud cover on the variability of ALAN across the urban gradient...
2017: PloS One
https://www.readbyqxmd.com/read/29116207/quantum-light-in-curved-low-dimensional-hexagonal-boron-nitride-systems
#14
Nathan Chejanovsky, Youngwook Kim, Andrea Zappe, Benjamin Stuhlhofer, Takashi Taniguchi, Kenji Watanabe, Durga Dasari, Amit Finkler, Jurgen H Smet, Jörg Wrachtrup
Low-dimensional wide bandgap semiconductors open a new playing field in quantum optics using sub-bandgap excitation. In this field, hexagonal boron nitride (h-BN) has been reported to host single quantum emitters (QEs), linking QE density to perimeters. Furthermore, curvature/perimeters in transition metal dichalcogenides (TMDCs) have demonstrated a key role in QE formation. We investigate a curvature-abundant BN system - quasi one-dimensional BN nanotubes (BNNTs) fabricated via a catalyst-free method. We find that non-treated BNNT is an abundant source of stable QEs and analyze their emission features down to single nanotubes, comparing dispersed/suspended material...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29111816/comparing-the-response-to-acute-and-chronic-exposure-to-short-wavelength-lighting-emitted-from-computer-screens
#15
A Green, M Cohen-Zion, A Haim, Y Dagan
The use of electronic devices with light-emitting screens has increased exponentially in the last decade. As a result, humans are continuously exposed to unintentional artificial light. We explored the effects of acute and chronic exposure to artificial light at night (ALAN) via screen illumination on sleep, circadian rhythms, and related functional outcomes. Nineteen participants (11 female and 8 males, mean age 28.1 ± 7.2 years) underwent a six-night study with three experimental conditions using a repeated-measures design: baseline (first night, no light exposure), acute ALAN exposure (second night), and chronic ALAN exposure (third to sixth nights)...
November 7, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29109309/prevalence-of-dental-caries-and-oral-hygiene-status-among-juvenile-prisoners-in-the-kingdom-of-saudi-arabia
#16
Thamer Alkhadra
AIM: The aim of the study was to determine the prevalence of dental caries and oral hygiene status among juvenile prisoners in Riyadh, Kingdom of Saudi Arabia. MATERIALS AND METHODS: A total of 105 prisoners aged between 12 and 17 years of age from the Juvenile Detention Center were included in the study. Any prisoner with systemic illness and being noncooperative were excluded from the study. Clinical examinations were performed under an artificial light source using a disposable mouth mirror and explorer while seated on a portable chair...
November 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29105988/strategies-for-efficient-charge-separation-and-transfer-in-artificial-photosynthesis-of-solar-fuels
#17
Yuxing Xu, Ailong Li, Tingting Yao, Changtong Ma, Xianwen Zhang, Jafar Hussain Shah, Hongxian Han
Converting sunlight to solar fuels by artificial photosynthesis is an innovative science and technology for renewable energy. Light harvesting (LH), photogenerated charge separation and transfer (CST), and catalytic reactions (CR) are the three primary steps in the processes of solar energy to chemical energy (SE-CE) conversion. Among them, the CST is the key "energy pump and delivery" step in determining the overall solar energy conversion efficiency. Efficient CST is always the priority concern in designing and assembling artificial photosynthesis systems for solar fuels production...
November 4, 2017: ChemSusChem
https://www.readbyqxmd.com/read/29105694/-handle-with-care-about-the-potential-unintended-consequences-of-oracular-artificial-intelligence-systems-in-medicine
#18
Federico Cabitza, Camilla Alderighi, Raffaele Rasoini, Gian Franco Gensini
Decisional support systems based on machine learning (ML) in medicine are gaining a growing interest as some recent articles have highlighted the high diagnostic accuracy exhibited by these systems in specific medical contexts. However, it is implausible that any potential advantage can be obtained without some potential drawbacks. In light of the current gaps in medical research about the side effects of the application of these new AI systems in medical practice, in this article we summarize the main unexpected consequences that may result from the widespread application of "oracular" systems, that is highly accurate systems that cannot give reasonable explanations of their advice as those endowed with predictive models developed with ML techniques usually are...
October 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/29105309/did-maize-domestication-and-early-spread-mediate-the-population-genetics-of-corn-leafhopper
#19
Julio S Bernal, Amanda M Dávila-Flores, Raul F Medina, Yolanda H Chen, Kyle E Harrison, Kimberly A Berrier
Investigating how crop domestication and early farming mediated crop attributes, distributions, and interactions with antagonists may shed light on today's agricultural pest problems. Crop domestication generally involved artificial selection for traits desirable to early farmers, e.g., increased productivity or yield, and enhanced qualities, though invariably it altered the interactions between crops and insects, and expanded the geographical ranges of crops. Thus, some studies suggest that with crop domestication and spread, insect populations on wild crop ancestors gave rise to pestiferous insect populations on crops...
November 3, 2017: Insect Science
https://www.readbyqxmd.com/read/29098563/melanization-affects-the-content-of-selected-elements-in-parmelioid-lichens
#20
Lorenzo Fortuna, Elena Baracchini, Gianpiero Adami, Mauro Tretiach
Lichens belonging to Parmeliaceae are highly diversified, but most of them share an extremely conserved morpho-chemical trait: the lower cortex is heavily melanized. The adaptive value of this character is still uncertain. Melanins are ubiquitous compounds found in most organisms since they fulfil several biological functions including defense against UV radiation, oxidizing agents, microbial stress, and metal complexation. This work aims to establish whether melanization can affect the elemental content of lichen thalli...
November 3, 2017: Journal of Chemical Ecology
keyword
keyword
11623
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"