keyword
MENU ▼
Read by QxMD icon Read
search

Call light

keyword
https://www.readbyqxmd.com/read/29789897/-pilot-study-to-investigate-sleep-disorders-in-the-blind-and-persons-with-relevant-visual-impairment
#1
C Dirks, D Grünewald, P Young, A Heidbreder
BACKGROUND: Sleep disorders are associated with serious health problems in blind and visually impaired persons. Loss of light perception may result in a shift of sleep-wake pattern, which may lead to significant impairments in daily life--the so-called non-24-hour sleep-wake disorder. To date, epidemiologic data on non-24 only exist for the USA. This pilot study was conducted to provide first epidemiologic data for the prevalence of non-24 and other sleep disorders among blind and visually impaired persons in Germany...
May 22, 2018: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/29789673/peatland-vegetation-composition-and-phenology-drive-the-seasonal-trajectory-of-maximum-gross-primary-production
#2
Matthias Peichl, Michal Gažovič, Ilse Vermeij, Eefje de Goede, Oliver Sonnentag, Juul Limpens, Mats B Nilsson
Gross primary production (GPP) is a key driver of the peatland carbon cycle. Although many studies have explored the apparent GPP under natural light conditions, knowledge of the maximum GPP at light-saturation (GPPmax ) and its spatio-temporal variation is limited. This information, however, is crucial since GPPmax essentially constrains the upper boundary for apparent GPP. Using chamber measurements combined with an external light source across experimental plots where vegetation composition was altered through long-term (20-year) nitrogen addition and artificial warming, we could quantify GPPmax in-situ and disentangle its biotic and abiotic controls in a boreal peatland...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29787851/jetlag-related-sleep-problems-and-its-management-a-review
#3
REVIEW
Cemal Cingi, Ismet Emrah Emre, Nuray Bayar Muluk
OBJECTIVES: We reviewed Jetlag, particularly in view of its effects on sleep and how it can be managed. METHODS: The Proquest Central database of Kırıkkale University, PubMed and Google scholar were used while searching for the following key words: "Jetlag", "symptoms", "sleep", "melatonin" and "treatment". RESULTS: Flight dysrhythmia, otherwise known as jetlag, is caused by flying globally over various time zones...
May 19, 2018: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/29786830/blue-light-filtering-intraocular-lenses-iols-for-protecting-macular-health
#4
REVIEW
Laura E Downie, Ljoudmila Busija, Peter R Keller
BACKGROUND: An intraocular lens (IOL) is a synthetic lens that is surgically implanted within the eye following removal of the crystalline lens, during cataract surgery. While all modern IOLs attenuate the transmission of ultra-violet (UV) light, some IOLs, called blue-blocking or blue-light filtering IOLs, also reduce short-wavelength visible light transmission. The rationale for blue-light filtering IOLs derives primarily from cell culture and animal studies, which suggest that short-wavelength visible light can induce retinal photoxicity...
May 22, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29786652/consumer-perception-of-the-quality-of-lamb-and-lamb-confit
#5
Guillermo Ripoll, Margalida Joy, Begoña Panea
The patterns of food consumption in general and those of meat, in particular, are constantly changing. These changes are due not only to socioeconomic and cultural trends that affect the whole society but also to the specific lifestyles of consumer groups. Due to the importance of consumer lifestyle, the objectives of this study were (i) to identify the profiles of lamb meat consumers according to their orientation toward convenience, as defined by their eating and cooking habits; (ii) to characterize these profiles according to their socioeconomic characteristics and their preferences regarding the intrinsic and extrinsic quality signals of lamb meat; and (iii) to analyze the willingness to pay for lamb confit...
May 22, 2018: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/29786601/heterogeneous-photocatalysis-and-its-potential-applications-in-water-and-wastewater-treatment-a-review
#6
Syed N Ahmed, Waseem Haider
There has been a considerable amount of research in the development of sustainable water treatment techniques capable of improving the quality of water. Unavailability of drinkable water is a crucial issue especially in regions where conventional drinking water treatment systems fail to eradicate aquatic pathogens, toxic metal ions and industrial waste. The research and development in this area have given rise to a new class of processes called Advanced Oxidation Processes, particularly in the form of heterogeneous photocatalysis, which converts photon energy into chemical energy...
May 22, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29785483/application-of-metallic-nanomaterials-in-nanomedicine
#7
Mahi R Singh
In this chapter, we explain why metallic nanomaterials are used in nanomedicine. We have shown that the electron density in metallic nanomaterials oscillates and creates electron density waves. When laser light falls on metallic nanoparticles, light interacts with electron density waves. According to Einstein, light, which is electromagnetic waves, consists of particles called photons. Similarly, electron density waves are also made of particles called surface plasmons. Therefore, photons from laser light and surface plasmons from metallic nanostructures interact with each other and create new particles called surface plasmon polaritons...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29783764/intensity-of-multilingual-language-use-predicts-cognitive-performance-in-some-multilingual-older-adults
#8
Anna Pot, Merel Keijzer, Kees de Bot
Cognitive advantages for bilinguals have inconsistently been observed in different populations, with different operationalisations of bilingualism, cognitive performance, and the process by which language control transfers to cognitive control. This calls for studies investigating which aspects of multilingualism drive a cognitive advantage, in which populations and under which conditions. This study reports on two cognitive tasks coupled with an extensive background questionnaire on health, wellbeing, personality, language knowledge and language use, administered to 387 older adults in the northern Netherlands, a small but highly multilingual area...
May 19, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29782510/individual-differences-in-learning-correlate-with-modulation-of-brain-activity-induced-by-transcranial-direct-current-stimulation
#9
Brian Falcone, Atsushi Wada, Raja Parasuraman, Daniel E Callan
Transcranial direct current stimulation (tDCS) has been shown to enhance cognitive performance on a variety of tasks. It is hypothesized that tDCS enhances performance by affecting task related cortical excitability changes in networks underlying or connected to the site of stimulation facilitating long term potentiation. However, many recent studies have called into question the reliability and efficacy of tDCS to induce modulatory changes in brain activity. In this study, our goal is to investigate the individual differences in tDCS induced modulatory effects on brain activity related to the degree of enhancement in performance, providing insight into this lack of reliability...
2018: PloS One
https://www.readbyqxmd.com/read/29780853/terahertz-magnon-polaritons-in-tmfeo-3
#10
Kirill Grishunin, Thomas Huisman, Guanqiao Li, Elena Mishina, Theo Rasing, Alexey V Kimel, Kailing Zhang, Zuanming Jin, Shixun Cao, Wei Ren, Guo-Hong Ma, Rostislav V Mikhaylovskiy
Magnon-polaritons are shown to play a dominant role in the propagation of terahertz (THz) waves through TmFeO3 orthoferrite, if the frequencies of the waves are in the vicinity of the quasi-antiferromagnetic spin resonance mode. Both time-domain THz transmission and emission spectroscopies reveal clear beatings between two modes with frequencies slightly above and slightly below this resonance, respectively. Rigorous modeling of the interaction between the spins of TmFeO3 and the THz light shows that the frequencies correspond to the upper and lower magnon-polariton branches...
April 18, 2018: ACS Photonics
https://www.readbyqxmd.com/read/29777828/mutual-connectivity-analysis-of-resting-state-functional-mri-data-with-local-models
#11
Adora M DSouza, Anas Z Abidin, Udaysankar Chockanathan, Giovanni Schifitto, Axel Wismüller
Functional connectivity analysis of functional MRI (fMRI) can represent brain networks and reveal insights into interactions amongst different brain regions. However, most connectivity analysis approaches adopted in practice are linear and non-directional. In this paper, we demonstrate the advantage of a data-driven, directed connectivity analysis approach called Mutual Connectivity Analysis using Local Models (MCA-LM) that approximates connectivity by modeling nonlinear dependencies of signal interaction, over more conventionally used approaches, such as Pearson's and partial correlation, Patel's conditional dependence measures, etcetera...
May 16, 2018: NeuroImage
https://www.readbyqxmd.com/read/29777757/stem-cell-based-retina-models
#12
Kevin Achberger, Jasmin C Haderspeck, Alexander Kleger, Stefan Liebau
From the early days of cell biological research, the eye-especially the retina-has evoked broad interest among scientists. The retina has since been thoroughly investigated and numerous models have been exploited to shed light on its development, morphology, and function. Apart from various animal models and human clinical and anatomical research, stem cell-based models of animal and human cells of origin have entered the field, especially during the last decade. Despite the observation that the retina of different species comprises endogenous stem cells, most stem cell-related research in the human retina is now based on pluripotent stem cell models...
May 16, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29776782/an-intervention-to-increase-students-physical-activity-a-2-year-pilot-study
#13
R Glenn Weaver, Collin A Webster, Michael W Beets, Keith Brazendale, Lauren Schisler, Mazen Aziz
INTRODUCTION: Schools are called upon to provide children with 30 minutes/day of moderate to vigorous physical activity (MVPA). Most school-based physical activity interventions have not targeted schools that serve children from low-income families. This study evaluated the effects of a pilot, competency-building professional development program on the school day MVPA and total activity (light- to vigorous-intensity activity) of students from schools that serve low-income families. STUDY DESIGN: Single group intervention with multiple follow-up repeated cross-sectional measures...
May 15, 2018: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29775319/operando-evidence-for-a-universal-oxygen-evolution-mechanism-on-thermal-and-electrochemical-iridium-oxides
#14
Viktoriia A Saveleva, Li Wang, Detre Teschner, Travis E Jones, Aldo S Gago, K Andreas Friedrich, Spyridon Zafeiratos, Robert Schloegl, Elena R Savinova
Progress in the development of the proton exchange membrane (PEM) water electrolysis technology requires decreasing the anode overpotential, where the sluggish multistep oxygen evolution reaction (OER) occurs. This calls for the understanding of the nature of the active OER sites and reaction intermediates, which are still being debated. In this work, we apply synchrotron radiation - based near ambient pressure X-ray photoelectron and absorption spectroscopies under operando conditions in order to unveil the nature of the reaction intermediates and shed light on the OER mechanism on electrocatalysts most widely used in PEM electrolyzers - electrochemical and thermal iridium oxides...
May 18, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29771280/identification-and-characterization-of-moonlighting-long-non-coding-rnas-based-on-rna-and-protein-interactome
#15
Lixin Cheng, Kwong-Sak Leung
Motivation: Moonlighting proteins are a class of proteins having multiple distinct functions, which play essential roles in a variety of cellular and enzymatic functioning systems. Although there have long been calls for computational algorithms for the identification of moonlighting proteins, research on approaches to identify moonlighting long non-coding RNAs (lncRNAs) has never been undertaken. Here, we introduce a novel methodology, MoonFinder, for the identification of moonlighting lncRNAs...
May 16, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29771126/magnesium-nanoparticle-plasmonics
#16
John Biggins, Sadegh Yazdi, Emilie Ringe
Nanoparticles of some metals (Cu/Ag/Au) sustain oscillations of their electron cloud called localized surface plasmon resonances (LSPRs). These resonances can occur at optical frequencies and be driven by light, generating enhanced electric fields and spectacular photon scattering. However, current plasmonic metals are rare, expensive, and have a limited resonant frequency range. Recently, much attention has been focused on earth-abundant Al, but Al nanoparticles cannot resonate in the IR. The earth-abundant Mg nanoparticles reported here surmount this limitation...
May 17, 2018: Nano Letters
https://www.readbyqxmd.com/read/29770800/current-and-future-circulating-biomarkers-for-cardiac-amyloidosis
#17
REVIEW
Marco Luciani, Luca Troncone, Federica Del Monte
Cardiac amyloidosis (CA) comprises a heterogeneous group of medical conditions affecting the myocardium. It presents with proteinaceous infiltration with variable degrees of severity, prevalence and evolution. Despite this heterogeneity, erroneous protein folding is the common pathophysiologic process, yielding the formation of a single misfolded protein (monomer) that progressively evolves and ultimately forms amyloid fibers. Additionally, by seeding out from the organs of origin, intermediates called oligomers metastasize and restart the process...
May 17, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29770512/x-ray-crystal-structures-of-the-type-ivb-secretion-system-dotb-atpases
#18
Marie S Prevost, Gabriel Waksman
Human infections by the intracellular bacterial pathogen Legionella pneumophila result in a severe form of pneumonia, the Legionnaire's disease. L. pneumophila utilises a type IVb secretion (T4bS) system termed "dot/icm" to secrete protein effectors to the host cytoplasm. The dot/icm system is powered at least in part by a functionally critical AAA+ ATPase, a protein called DotB, thought to belong to the VirB11 family of proteins. Here we present the crystal structure of DotB at 3.19 Å resolution, in its hexameric form...
May 17, 2018: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/29770448/eating-practices-among-low-income-overweight-obese-brazilian-mothers-a-bourdieusian-approach
#19
Priscila de Morais Sato, Mariana Dimitrov Ulian, Ramiro Fernandez Unsain, Fernanda Baeza Scagliusi
We investigated the eating practices of socially vulnerable overweight and obese Brazilian mothers, exploring the relationships between eating practices, capitals, fields and excess-weight. We conducted a qualitative study involving in-depth interviews of 21 women living in three vulnerable urban regions. Content analyses were performed and codes were used to locate actors in relation to each other in terms of 'capitals' and 'fields', forming a typology based on Bourdieu's theory with five groups. Socioeconomic conditions during childhood and liking to cook were the main characteristics related to each group's distinct eating practices...
May 16, 2018: Sociology of Health & Illness
https://www.readbyqxmd.com/read/29762888/employing-theories-far-beyond-their-limits-linear-dichroism-theory
#20
Thomas Günter Mayerhöfer
Using linear polarized light, it is possible in case of ordered structures, such as stretched polymers or single crystals, to determine the orientation of the transition moments of electronic and vibrational transitions. This not only helps to resolve overlapping bands, but also assigning the symmetry species of the transitions and to elucidate the structure. To perform spectral evaluation quantitatively, a sometimes "Linear Dichroism Theory" called approach is very often used. This approach links the relative orientation of the transition moment and polarization direction to the quantity absorbance...
May 15, 2018: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
keyword
keyword
78809
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"