keyword
MENU ▼
Read by QxMD icon Read
search

(Artificial OR supplemental) AND light*

keyword
https://www.readbyqxmd.com/read/28343265/effect-of-10-cerium-chloride-on-artificial-caries-lesions-of-human-enamel-evaluated-using-quantitative-light-induced-fluorescence-an-in-vitro-study
#1
R Jaisingh, R Shanbhog, B Nandlal, M Thippeswamy
AIM: To evaluate the effect of 10% cerium chloride intervention on pre-demineralised human enamel subjected to cycles of de- and remineralisation. METHODS: This was an in vitro, comparative type study of 60 human enamel samples that were randomly divided into control and test groups. The samples were then subjected to a cycle of demineralisation followed by intervention with respective treatment solutions (control group: placebo solution; test: 10% cerium chloride) for 30 s under constant agitation and then to a 2nd cycle of demineralisation followed by remineralisation using artificial saliva...
March 25, 2017: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28343260/urethral-lumen-occlusion-by-artificial-sphincteric-devices-a-computational-biomechanics-approach
#2
Arturo Nicola Natali, Emanuele Luigi Carniel, Chiara Giulia Fontanella, Silvia Todros, Giulia Maria De Benedictis, Maria Angela Cerruto, Walter Artibani
The action induced by artificial sphincteric devices to provide urinary continence is related to the problem of evaluating the interaction between the occlusive cuff and the urethral duct. The intensity and distribution of the force induced within the region of application determine a different occlusion process and potential degradation of the urethral tissue, mostly at the borders of the cuff. This problem is generally considered in the light of clinical and surgical operational experience, while a valid cooperation is established with biomechanical competences by means of experimental and numerical investigation...
March 25, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28338794/genome-wide-association-study-unravels-the-genetic-control-of-the-apple-volatilome-and-its-interplay-with-fruit-texture
#3
Brian Farneti, Mario Di Guardo, Iuliia Khomenko, Luca Cappellin, Franco Biasioli, Riccardo Velasco, Fabrizio Costa
Fruit quality represents a fundamental factor guiding consumers' preferences. Among apple quality traits, volatile organic compounds and texture features play a major role. Proton Transfer Reaction-Time of Flight-Mass Spectrometry (PTR-ToF-MS), coupled with an artificial chewing device, was used to profile the entire apple volatilome of 162 apple accessions, while the fruit texture was dissected with a TAXT-AED texture analyzer. The array of volatile compounds was classed into seven major groups and used in a genome-wide association analysis carried out with 9142 single nucleotide polymorphisms (SNPs)...
February 24, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28337979/monolayer-optical-memory-cells-based-on-artificial-trap-mediated-charge-storage-and-release
#4
Juwon Lee, Sangyeon Pak, Young-Woo Lee, Yuljae Cho, John Hong, Paul Giraud, Hyeon Suk Shin, Stephen M Morris, Jung Inn Sohn, SeungNam Cha, Jong Min Kim
Monolayer transition metal dichalcogenides are considered to be promising candidates for flexible and transparent optoelectronics applications due to their direct bandgap and strong light-matter interactions. Although several monolayer-based photodetectors have been demonstrated, single-layered optical memory devices suitable for high-quality image sensing have received little attention. Here we report a concept for monolayer MoS2 optoelectronic memory devices using artificially-structured charge trap layers through the functionalization of the monolayer/dielectric interfaces, leading to localized electronic states that serve as a basis for electrically-induced charge trapping and optically-mediated charge release...
March 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28336227/aqueous-calyxes-extract-of-roselle-or-hibiscus-sabdariffa-linn-supplementation-improves-liver-morphology-in-streptozotocin-induced-diabetic-rats
#5
Akhtar Husin Nazratun Nafizah, Siti Balkis Budin, Abd Hamid Zaryantey, Abd Rahman Mariati, Raj Louis Santhana, Mohamad Osman, Md Idris Muhd Hanis, Mohamed Jamaludin
BACKGROUND AND STUDY AIMS: The complex series of deleterious events among diabetes patients leads to multiple organ failure. Therefore, a holistic approach of treatment is urgently required to prevent worsening of complications. The present investigation was carried out to study the possible protective effects of Roselle or Hibiscus sabdariffa Linn (HSL) calyxes aqueous extract, as an antidiabetic and antioxidant agent against oxidative liver injury in streptozotocin-induced diabetic rats...
March 20, 2017: Arab Journal of Gastroenterology: the Official Publication of the Pan-Arab Association of Gastroenterology
https://www.readbyqxmd.com/read/28335416/supplementation-with-phycocyanobilin-citrulline-taurine-and-supranutritional-doses-of-folic-acid-and-biotin-potential-for-preventing-or-slowing-the-progression-of-diabetic-complications
#6
Mark F McCarty
Oxidative stress, the resulting uncoupling of endothelial nitric oxide synthase (eNOS), and loss of nitric oxide (NO) bioactivity, are key mediators of the vascular and microvascular complications of diabetes. Much of this oxidative stress arises from up-regulated nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity. Phycocyanobilin (PhyCB), the light-harvesting chromophore in edible cyanobacteria such as spirulina, is a biliverdin derivative that shares the ability of free bilirubin to inhibit certain isoforms of NADPH oxidase...
March 14, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/28331534/ford-and-edison-in-a-modern-regulatory-environment-the-first-in-human-trial-of-night-work-and-artificial-light
#7
EDITORIAL
Thomas C Erren, David M Shaw, Ursula Wild, J Valérie Groß
A thought experiment places Henry Ford and Thomas Alva Edison in a modern regulatory environment. In a utopian occupational world devoid of night-shifts or artificial light, Ford wants to experiment with "working through the night". To support Ford's project, Edison offers his patented electric lamps to "turn nights into days". An ethics committee [EC] does not approve the night-work experiment and Utopia's Food and Drug Administration [FDA] does not approve the potential medical device as safe for use by humans...
2017: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/28330554/qualitative-and-quantitative-modifications-of-root-mitochondria-during-senescence-of-above-ground-parts-of-arabidopis-thaliana
#8
Diego Darío Fanello, Carlos Guillermo Bartoli, Juan José Guiamet
This work studied modifications experienced by root mitochondria during whole plant senescence or under light deprivation, using Arabidopsis thaliana plants with YFP tagged to mitochondria. During post-bolting development, root respiratory activity started to decline after aboveground organs (i.e., rosette leaves) had senesced. This suggests that carbohydrate starvation may induce root senescence. Similarly, darkening the whole plant induced a decrease in respiration of roots. This was partially due to a decrease in the number of total mitochondria (YFP-labelled mitochondria) and most probably to a decrease in the quantity of mitochondria with a developed inner membrane potential (ΔΨm, i...
May 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28327742/pair-natural-orbital-and-canonical-coupled-cluster-reaction-enthalpies-involving-light-to-heavy-alkali-and-alkaline-earth-metals-the-importance-of-sub-valence-correlation
#9
Yury Minenkov, Giovanni Bistoni, Christoph Riplinger, Alexander A Auer, Frank Neese, Luigi Cavallo
In this work, we tested canonical and domain based pair natural orbital coupled cluster methods (CCSD(T) and DLPNO-CCSD(T), respectively) for a set of 32 ligand exchange and association/dissociation reaction enthalpies involving ionic complexes of Li, Be, Na, Mg, Ca, Sr, Ba and Pb(ii). Two strategies were investigated: in the former, only valence electrons were included in the correlation treatment, giving rise to the computationally very efficient FC (frozen core) approach; in the latter, all non-ECP electrons were included in the correlation treatment, giving rise to the AE (all electron) approach...
March 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28320948/highly-oriented-photosynthetic-reaction-centers-generate-a-proton-gradient-in-synthetic-protocells
#10
Emiliano Altamura, Francesco Milano, Roberto R Tangorra, Massimo Trotta, Omar Hassan Omar, Pasquale Stano, Fabio Mavelli
Photosynthesis is responsible for the photochemical conversion of light into the chemical energy that fuels the planet Earth. The photochemical core of this process in all photosynthetic organisms is a transmembrane protein called the reaction center. In purple photosynthetic bacteria a simple version of this photoenzyme catalyzes the reduction of a quinone molecule, accompanied by the uptake of two protons from the cytoplasm. This results in the establishment of a proton concentration gradient across the lipid membrane, which can be ultimately harnessed to synthesize ATP...
March 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28320674/simulation-study-of-an-ultrasound-retinal-prosthesis-with-a-novel-contact-lens-array-for-noninvasive-retinal-stimulation
#11
Mengdi Gao, Yanyan Yu, Huixia Zhao, Guofeng Li, Hongyang Jiang, Congzhi Wang, Feiyan Cai, Leanne Chan, Bernard Chiu, Wei Qian, Weibao Qiu, Hairong Zheng
Millions of people around the world suffer from varying degrees of vision loss (including complete blindness) because of retinal degenerative diseases. Artificial retinal prosthesis, which is usually based on electrical neurostimulation, are the most advanced technology for different types of retinal degeneration. However, this technology involves placing a device into the eyeball, and such a highly invasive procedure is inevitably highly risk and expensive. Ultrasound has been demonstrated to be a promising technology for noninvasive neurostimulation, making it possible to stimulate the retina and induce action potentials similar to those elicited by light stimulation...
March 15, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28319615/dual-light-control-of-nanomachines-that-integrate-motor-and-modulator-subunits
#12
Justin T Foy, Quan Li, Antoine Goujon, Jean-Rémy Colard-Itté, Gad Fuks, Emilie Moulin, Olivier Schiffmann, Damien Dattler, Daniel P Funeriu, Nicolas Giuseppone
A current challenge in the field of artificial molecular machines is the synthesis and implementation of systems that can produce useful work when fuelled with a constant source of external energy. The first experimental achievements of this kind consisted of machines with continuous unidirectional rotations and translations that make use of 'Brownian ratchets' to bias random motions. An intrinsic limitation of such designs is that an inversion of directionality requires heavy chemical modifications in the structure of the actuating motor part...
March 20, 2017: Nature Nanotechnology
https://www.readbyqxmd.com/read/28318581/characterization-of-the-chemical-structures-and-physical-properties-of-exopolysaccharides-produced-by-various-streptococcus-thermophilus-strains
#13
U Pachekrepapol, J A Lucey, Y Gong, R Naran, P Azadi
Exopolysaccharides (EPS) produced by some lactic acid bacteria are often used by the dairy industry to improve the rheological and physical properties of yogurt, but the relationship between their structure and functional effect is still unclear. The EPS from different species, or different strains from the same species, may differ in terms of molar mass, repeating unit structure, and EPS yield during fermentation of milk. This study aimed to characterize the detailed properties of EPS produced from 7 strains of Streptococcus thermophilus, which is one of the key cultures used for yogurt manufacture...
March 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28317856/a-smartphone-based-diagnostic-platform-for-rapid-detection-of-zika-chikungunya-and-dengue-viruses
#14
Aashish Priye, Sara W Bird, Yooli K Light, Cameron S Ball, Oscar A Negrete, Robert J Meagher
Current multiplexed diagnostics for Zika, dengue, and chikungunya viruses are situated outside the intersection of affordability, high performance, and suitability for use at the point-of-care in resource-limited settings. Consequently, insufficient diagnostic capabilities are a key limitation facing current Zika outbreak management strategies. Here we demonstrate highly sensitive and specific detection of Zika, chikungunya, and dengue viruses by coupling reverse-transcription loop-mediated isothermal amplification (RT-LAMP) with our recently developed quenching of unincorporated amplification signal reporters (QUASR) technique...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317113/temperamental-markers-in-toddlers-with-autism-spectrum-disorder
#15
Suzanne L Macari, Judah Koller, Daniel J Campbell, Katarzyna Chawarska
BACKGROUND: Although temperament has been recognized as an important contributor to childhood psychopathology, its role in emergent autism spectrum phenotypes is not well understood. This study examined whether toddlers with autism spectrum disorder (ASD) display temperamental vulnerabilities compared to toddlers with other developmental challenges, whether these characteristics are distinct from core autism symptoms, if they are stable over time, and if they contribute to social outcomes in preschool...
March 20, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28316916/human-ex-vivo-dentin-pulp-complex-preservation-in-a-full-crown-model
#16
João Botelho, Maria Alzira Cavacas, Gonçalo Borrecho, Mário Polido, Pedro Oliveira, José Martins Dos Santos
OBJECTIVES: Currently, there is lack of human in vitro full tooth models that hold the odontoblast layer with pulp tissue in their native environment. The appearance of new in vitro and in vivo models has provided new understanding of the potential of tissue engineering in dental pulp regeneration. However, the development of new in vitro full tooth models will allow us to get closer to in vivo conditions. Thus, the aim of this study is to preserve a living dentin-pulp complex, in a novel in vitro full crown model, after tooth extraction...
January 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28316562/changes-in-cigarette-smoking-initiation-cessation-and-relapse-among-u-s-adults-a-comparison-of-two-longitudinal-samples
#17
Zinan Yi, Maria E Mayorga, Kristen Hassmiller Lich, Jennifer L Pearson
BACKGROUND: The tobacco epidemic in the U.S. has matured in the past decade. However, due to rapidly changing social policy and commercial environments, tailored prevention and interventions are needed to support further reduction in smoking. METHODS: Using Tobacco Use Supplement to the Current Population Survey (TUS-CPS) 2002-2003 and 2010-2011 longitudinal cohorts, five smoking states are defined including daily-heavy, daily-light, non-daily, former and non-smoker...
2017: Tobacco Induced Diseases
https://www.readbyqxmd.com/read/28303945/dependence-of-nighttime-sleep-duration-in-one-month-old-infants-on-alterations-in-natural-and-artificial-photoperiod
#18
Sachiko Iwata, Fumie Fujita, Masahiro Kinoshita, Mitsuaki Unno, Takashi Horinouchi, Seiichi Morokuma, Osuke Iwata
Human sleep-wake cycles are entrained by both natural and artificial light-dark cycles. However, little is known regarding when and how the photoperiod changes entrain the biological clock after conception. To investigate the dependence of sleep patterns in young infants on the natural and artificial light-dark cycles, 1,302 pairs of one-month-old infants and their mothers were asked to answer a questionnaire. Birth in spring, longer daytime sleep duration, early/regular light-off times, and longer maternal nighttime sleep duration were identified as independent variables for longer infant nighttime sleep duration in both univariate and multivariate analyses...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303757/evaluation-of-microalgae-production-coupled-with-wastewater-treatment
#19
Davide De Francisci, Yixi Su, Arvo Iital, Irini Angelidaki
In the present study the feasibility of microalgae production coupled with wastewater treatment was assessed. Continuous cultivation of Chlorella sorokiniana with wastewater was tested in lab-scale flat panel photobioreactors. Biomass productivity was determined for four dilution rates (4.32 d(-1), 3.6 d(-1), 1.8 d(-1) and 0.72 d(-1)). The productivity peak was 1.524 g l(-1)d(-1) at the dilution rate of 2.41 d(-1). Nitrogen and phosphorus removals were found to be inversely proportional to dilution rates, while COD removal was found to be 50% at all the tested conditions...
March 17, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28303008/an-analysis-of-echinacea-chloroplast-genomes-implications-for-future-botanical-identification
#20
Ning Zhang, David L Erickson, Padmini Ramachandran, Andrea R Ottesen, Ruth E Timme, Vicki A Funk, Yan Luo, Sara M Handy
Echinacea is a common botanical used in dietary supplements, primarily to treat upper respiratory tract infections and to support immune function. There are currently thought to be nine species in the genus Echinacea. Due to very low molecular divergence among sister species, traditional DNA barcoding has not been successful for differentiation of Echinacea species. Here, we present the use of full chloroplast genomes to distinguish between all 9 reported species. Total DNA was extracted from specimens stored at the National Museum of Natural History, Smithsonian Institution, which had been collected from the wild with species identification documented by experts in the field...
March 16, 2017: Scientific Reports
keyword
keyword
82883
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"