keyword
MENU ▼
Read by QxMD icon Read
search

Stokes

keyword
https://www.readbyqxmd.com/read/28938204/natural-outdoor-environments-and-mental-health-stress-as-a-possible-mechanism
#1
Margarita Triguero-Mas, David Donaire-Gonzalez, Edmund Seto, Antònia Valentín, David Martínez, Graham Smith, Gemma Hurst, Glòria Carrasco-Turigas, Daniel Masterson, Magdalena van den Berg, Albert Ambròs, Tania Martínez-Íñiguez, Audrius Dedele, Naomi Ellis, Tomas Grazulevicius, Martin Voorsmit, Marta Cirach, Judith Cirac-Claveras, Wim Swart, Eddy Clasquin, Annemarie Ruijsbroek, Jolanda Maas, Michael Jerret, Regina Gražulevičienė, Hanneke Kruize, Christopher J Gidlow, Mark J Nieuwenhuijsen
INTRODUCTION: Better mental health has been associated with exposure to natural outdoor environments (NOE). However, comprehensive studies including several indicators of exposure and outcomes, potential effect modifiers and mediators are scarce. OBJECTIVES: We used novel, objective measures to explore the relationships between exposure to NOE (i.e. residential availability and contact) and different indicators of mental health, and possible modifiers and mediators...
September 19, 2017: Environmental Research
https://www.readbyqxmd.com/read/28937613/neighborhood-context-homeownership-and-home-value-an-ecological-analysis-of-implications-for-health
#2
Roshanak Mehdipanah, Amy J Schulz, Barbara A Israel, Graciela Mentz, Alexa Eisenberg, Carmen Stokes, Zachary Rowe
While homeownership has been linked to positive health outcomes there is limited evidence regarding the conditions under which it may be health protective. We present a conceptual model linking homeownership to health, highlighting key potential pathways. Using the Detroit Metropolitan Area as a case study, and data from the American Community Survey (2009-2013; 5-years estimates) and Michigan Department of Community Health, we tested the following questions: (1) Is neighborhood percentage non-Hispanic Black (NHB) associated with homeownership? (2) Is neighborhood percentage NHB associated with health? (3) Is the association between percentage NHB and health mediated by homeownership? (4) Does neighborhood housing value modify associations between percentage NHB and health, or between homeownership and health? Percentage NHB was associated with homeownership and health outcomes; Associations between percentage NHB and mortality, but not disability, were partially mediated by neighborhood homeownership...
September 22, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28934585/ventilator-alarms-challenges-and-opportunities-for-improvement
#3
Jacqueline E Stokes, Sajid H Manzoor, Maria M Cvach
No abstract text is available yet for this article.
2017: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/28933533/luminescence-tuning-thermal-quenching-and-electronic-structure-of-narrow-band-red-emitting-nitride-phosphors
#4
Dianpeng Cui, Zhen Song, Zhiguo Xia, Quanlin Liu
Exploring high-performance narrow-band red-emitting phosphor is an important challenge for improving white light LEDs. Here, on the basis of three interesting nitride phosphors with similar vierer rings framework structure, two phosphor series, Eu(2+)-doped Sr(LiAl)1-xMg2xAl2N4 and Sr(LiAl3)1-y(Mg3Si)yN4 (x, y = 0-1), are successfully synthesized by a solid state reaction. They show narrow-band red emission with tunable emission peaks from 614 to 658 nm and 607 to 663 nm. The varying luminescence behaviors with composition and structure are discussed based on centroid shift, crystal field splitting and Stokes shift...
September 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28933489/drop-friction-on-liquid-infused-materials
#5
Armelle Keiser, Ludovic Keiser, Christophe Clanet, David Quéré
We discuss in this paper the nature of the friction generated as a drop glides on a textured material infused by another liquid. Different regimes are found, depending on the viscosities of both liquids. While a viscous drop simply obeys a Stokes-type friction, the force opposing a drop moving on a viscous substrate becomes non-linear in velocity. A liquid on an infused material is surrounded by a meniscus, and this specific feature is proposed to be responsible for the special frictions observed on both adhesive and non-adhesive substrates...
September 21, 2017: Soft Matter
https://www.readbyqxmd.com/read/28933479/linking-classical-and-molecular-optomechanics-descriptions-of-sers
#6
Mikołaj K Schmidt, Ruben Esteban, Felix Benz, Jeremy J Baumberg, Javier Aizpurua
The surface-enhanced Raman scattering (SERS) of molecular species in plasmonic cavities can be described as an optomechanical process where plasmons constitute an optical cavity of reduced effective mode volume which effectively couples to the vibrations of the molecules. An optomechanical Hamiltonian can address the full quantum dynamics of the system, including the phonon population build-up, the vibrational pumping regime, and the Stokes-anti-Stokes correlations of the photons emitted. Here we describe in detail two different levels of approximation to the methodological solution of the optomechanical Hamiltonian of a generic SERS configuration, and compare the results of each model in light of recent experiments...
September 21, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28932856/on-the-apparent-yield-stress-in-non-brownian-magnetorheological-fluids
#7
Daniel Vågberg, Brian P Tighe
We use simulations to probe the flow properties of dense two-dimensional magnetorheological fluids. Prior results from both experiments and simulations report that the shear stress σ scales with strain rate [small gamma, Greek, dot above] as σ ∼ [small gamma, Greek, dot above](1-Δ), with values of the exponent ranging between 2/3 < Δ ≤ 1. However it remains unclear what properties of the system select the value of Δ, and in particular under what conditions the system displays a yield stress (Δ = 1)...
September 21, 2017: Soft Matter
https://www.readbyqxmd.com/read/28930563/mass-spectrometry-based-proteomic-analysis-of-the-dna-damage-response
#8
Matthew P Stokes, Yiying Zhu, Charles L Farnsworth
In response to DNA damage, cells have evolved mechanisms to halt cell cycle progression, activate repair, or initiate apoptosis. These DNA damage response (DDR) pathways are critical for cellular survival in response to genomic insult, and play important roles in growth, development, and disease. Historically, mediators of DNA damage response signaling have been studied one or a few proteins at a time. Advances in mass spectrometry instrumentation and enrichment methods now allow for more global analysis of the DDR in cells and tissues...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930435/new-triplet-sensitization-routes-for-photon-upconversion-thermally-activated-delayed-fluorescence-molecules-inorganic-nanocrystals-and-singlet-to-triplet-absorption
#9
Nobuhiro Yanai, Nobuo Kimizuka
Photon upconversion based on triplet-triplet annihilation (TTA-UC) has attracted much interest because of its possible applications to renewable energy production and biological fields. In particular, the UC of near-infrared (NIR) light to visible (vis) light is imperative to overcome the Shockley-Queisser limit of single-junction photovoltaic cells, and the efficiency of photocatalytic hydrogen production from water can also be improved with the aid of vis-to-ultraviolet (UV) UC. However, both processes have met limitations in the wavelength range, efficiency, and sensitivity for weak incident light...
September 20, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28929527/music-exposure-and-maturation-of-late-preterm-sleep-wake-cycles-a-randomized-crossover-trial
#10
Adia Stokes, Alexander G Agthe, Dina El Metwally
AIM: To determine the effect of music on sleep-wake cycle (SWC) patterns in late preterm neonates. METHODS: In a masked crossover study, infants between 32-36 6/7 weeks gestation were randomized to music exposure either during the first six or last six hours of a 12-hour observation period. SWC characteristics were determined by continuous amplitude integrated electroencephalography (aEEG) read by two coders masked to exposure sequence. Analysis was done in paired comparisons...
September 20, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28922599/effect-of-t%C3%A2-t-mismatch-on-dna-dynamics-probed-by-minor-groove-binders-comparison-of-dynamic-stokes-shifts-of-hoechst-and-dapi
#11
Him Shweta, Moirangthem Kiran Singh, Kavita Yadav, Sachin Dev Verma, Nibedita Pal, Sobhan Sen
Recognition of DNA base mismatches and their subsequent repair by enzymes is vital for genomic stability. However, it is difficult to comprehend such process in which enzymes sense and repair different types of mismatches with different ability. It has been suggested that the differential structural changes of mismatched-bases act as cues to the repair enzymes, although effect of such DNA structural changes on surrounding water and ion dynamics is inevitable due to strong electrostatic coupling among them. Thus, collective dynamics of DNA, water and ions near the mismatch site is believed to be important for mismatch recognition and repair mechanism...
September 18, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28921837/coronary-artery-bypass-grafting-versus-percutaneous-coronary-intervention-in-patients-with-non-insulin-treated-type-2-diabetes-mellitus-a-meta-analysis-of-randomized-controlled-trials
#12
Yushu Wang, Meiqin Wen, Junteng Zhou, Yucheng Chen, Qing Zhang
INTRODUCTION: The outcomes and prognosis of revascularization by either coronary artery bypass grafting (CABG) surgery or percutaneous coronary intervention (PCI) in patients with non-insulin treated type 2 diabetes mellitus (NITDM) have not yet been well established. METHODS: Randomized controlled trials (RCTs) were identified by searching Pubmed, EMBASE and Cochrane library from inception until May 2016. Heterogeneity was evaluated and the pooled hazard ratio (HR) was calculated using a fixed-effect model...
September 15, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28921821/iridium-catalyzed-direct-c-h-amidation-polymerization-step-growth-polymerization-by-c-n-bond-formation-via-c-h-activation-to-give-fluorescent-polysulfonamides
#13
Tae-Lim Choi, Jang Yoon-Jung, Soon-Hyeok Hwang
We report a powerful strategy for activation of C-H bonds to produce polysulfonamides by an atom-economical and green method using iridium-catalyzed direct C-H amidation polymerization (DCAP). After screening various directing groups, additives, silver salts, concentrations, and temperatures to optimize DCAP, high molecular-weight (up to 149 kDa) and defect-free polysulfonamides were synthesized from various bis-sulfonyl azides. Although these polymers do not have conventional fluorescent conjugated cores, they emit blue light with large Stokes shifts and high quantum yields upon photoexcitation, due to excited-state intramolecular proton transfer process...
September 15, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28920595/a-unique-rectilinearly-%C3%AF-extended-rhodamine-dye-with-large-stokes-shift-and-near-infrared-fluorescence-for-bioimaging
#14
Chang Liu, Xiaojie Jiao, Qing Wang, Kun Huang, Song He, Liancheng Zhao, Xianshun Zeng
The synthesis of a novel rectilinearly π-extended rhodamine dye (TJ730) has been described. It exhibits NIR fluorescence emission with a Stokes shift of >110 nm. TJ730 and its ester derivative are cell permeable, have low cytotoxicity, are biocompatible, and can be directly used as NIR tracers for lysosome staining. Using TJ730 as a precursor, two probes have been prepared for Cu(2+).
September 18, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28917785/fluorescence-quenching-based-alkaline-phosphatase-activity-detection
#15
Yaqi Mei, Qiong Hu, Baojing Zhou, Yonghui Zhang, Minhui He, Ting Xu, Feng Li, Jinming Kong
Simple and fast detection of alkaline phosphatase (ALP) activity is of great importance for diagnostic and analytical applications. In this work, we report a turn-off approach for the real-time detection of ALP activity on the basis of the charge transfer induced fluorescence quenching of the Cu(BCDS)2(2-) (BCDS = bathocuproine disulfonate) probe. Initially, ALP can enzymatically hydrolyze the substrate ascorbic acid 2-phosphate to release ascorbic acid (AA). Subsequently, the AA-mediated reduction of the Cu(BCDS)2(2-) probe, which displays an intense photoluminescence band at the wavelength of 402nm, leads to the static quenching of fluorescence of the probe as a result of charge transfer...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28916350/quantification-of-marine-macro-debris-abundance-around-vancouver-island-canada-based-on-archived-aerial-photographs-processed-by-projective-transformation
#16
Tomoya Kataoka, Cathryn Clarke Murray, Atsuhiko Isobe
The abundance of marine macro-debris was quantified with high spatial resolution by applying an image processing technique to archived shoreline aerial photographs taken over Vancouver Island, Canada. The photographs taken from an airplane at oblique angles were processed by projective transformation for georeferencing, where five reference points were defined by comparing aerial photographs with satellite images of Google Earth. Thereafter, pixels of marine debris were extracted based on their color differences from the background beaches...
September 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28915410/aiegens-for-biological-process-monitoring-and-disease-theranostics
#17
REVIEW
Xinggui Gu, Ryan T K Kwok, Jacky W Y Lam, Ben Zhong Tang
Biological processes are of great significance for the normal physiological functions of living organisms and closely related to the health. Monitoring of biological processes and diagnosis of diseases based on fluorescent techniques would provide comprehensive insight into mechanism of life and pathogenesis of diseases, precisely guiding therapeutic effect in theranostics. It largely relied on fluorophores with the properties of excellent photostability, large Stokes shift, high signal-to-noise ratio and free of aggregation-caused quenching (ACQ) effect...
September 4, 2017: Biomaterials
https://www.readbyqxmd.com/read/28914984/hypercalcemic-disorders-in-children
#18
REVIEW
Victoria J Stokes, Morten F Nielsen, Fadil M Hannan, Rajesh V Thakker
Hypercalcemia is defined as a serum calcium concentration that is greater than 2 standard deviations above the normal mean, which in children may vary with age and sex, reflecting changes in the normal physiology at each developmental stage. Hypercalcemic disorders in children may present with hypotonia, poor feeding, vomiting, constipation, abdominal pain, lethargy, polyuria, dehydration, failure to thrive and seizures. In severe cases renal failure, pancreatitis and reduced consciousness may also occur and older children and adolescents may present with psychiatric symptoms...
September 15, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28914920/spectral-focusing-dual-comb-coherent-anti-stokes-raman-spectroscopic-imaging
#19
Kun Chen, Tao Wu, Tao Chen, Haoyun Wei, Honglei Yang, Tian Zhou, Yan Li
Coherent Raman microscopy provides label-free imaging by interrogating the intrinsic vibration of molecules. Here, we present a concept in a 100 MHz dual-comb scheme to facilitate high-speed and broadband coherent anti-Stokes Raman spectroscopic imaging based on down-converted, automatically varying delay-time in spectral focusing excitation. A rapid measurement of vibrational microspectroscopy on submicrosecond scale over a spectral span ∼700  cm(-1) with a refresh rate of 1.2 kHz provides access to well-resolved molecular signatures within the fingerprint region...
September 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28914895/experimental-generation-of-discrete-ultraviolet-wavelength-by-cascaded-intermodal-four-wave-mixing-in-a-multimode-photonic-crystal-fiber
#20
Jinhui Yuan, Zhe Kang, Feng Li, Xianting Zhang, Chao Mei, Guiyao Zhou, Xinzhu Sang, Qiang Wu, Binbin Yan, Xian Zhou, Kangping Zhong, Kuiru Wang, Chongxiu Yu, Gerald Farrell, Chao Lu, Hwa Yaw Tam, P K A Wai
In this Letter, we demonstrate experimentally for the first time, to the best of our knowledge, discrete ultraviolet (UV) wavelength generation by cascaded intermodal FWM when femtosecond pump pulses at 800 nm are launched into the deeply normal dispersion region of the fundamental guided mode of a multimode photonic crystal fiber (MPCF). For pump pulses at average input powers of Pav=450, 550, and 650 mW, the first anti-Stokes waves are generated at the visible wavelength of 538.1 nm through intermodal phase matching between the fundamental and second-order guided mode of the MPCF...
September 15, 2017: Optics Letters
keyword
keyword
26761
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"