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https://www.readbyqxmd.com/read/28437997/effect-of-zno-nanostructures-on-the-optical-properties-of-white-light-emitting-diodes
#1
Longshi Rao, Yong Tang, ZongTao Li, Xinrui Ding, Jiasheng Li, Shudong Yu, Caiman Yan, Hangaung Lu
White light produced by blue LEDs with yellow phosphor is the most widely used methods, but it results in poor quality in angular CCT uniformity. In this work, a novel technique was introduced to solve this problem by integrating different ZnO nanostructures into white light-emitting diodes. The experiment of ZnO doped films and the simulation of Finite-Difference Time-Domain (FDTD) were carried out. The result indicated scattering effect of ZnO nanoparticles could improve uniformity of scattering energy effectively...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437994/high-speed-asynchronous-optical-sampling-based-on-ghz-yb-kyw-oscillators
#2
C Li, N Krauß, G Schäfer, L Ebner, O Kliebisch, J Schmidt, S Winnerl, M Hettich, T Dekorsy
A low-cost scheme of high-speed asynchronous optical sampling based on Yb:KYW oscillators is reported. Two GHz diode-pumped oscillators with a slight pulse repetition rate offset serve as pump and probe source, respectively. The temporal resolution of this system is limited to 500 fs mainly by the pulse duration of the oscillators and also by relative timing jitter between the oscillators. A near-shot-noise noise floor around 10<sup>-6</sup> (∆R/R) is obtained within a data acquisition time of a few seconds...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437934/dual-channel-multilayer-coated-surface-plasmon-resonance-sensor-for-dual-refractive-index-range-measurements
#3
Mengdi Lu, Wei Peng, Qiang Liu, Yun Liu, Lixia Li, Yuzhang Liang, Jean-Francois Masson
We present a novel multilayer-coated surface plasmon resonance sensor for dual refractive index range measurements based on a capillary structure. The sensing elements include an internally coated Ag layer and an externally coated bilayer of Au with an overlayer of thin indium tin oxide (ITO). The internal Ag layer was sensitive to higher refractive index (RI) medium while the external Au/ITO layer was sensitive to lower refractive index medium. We evaluated the sensor performance by measuring RI changes in two channels, RI sensitivities were -1951 nm/RIU and 2496 nm/RIU, respectively...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437932/electrifying-catheters-with-light
#4
Martin Pekař, Jeannet van Rens, Martin B van der Mark
Smart minimally invasive devices face a connectivity challenge. An example is found in intracardiac echocardiography where the signal transmission and supply of power at the distal end require many thin and fragile wires in order to keep the catheter slim and flexible. We have built a fully functional bench-top prototype to demonstrate that electrical wires may be replaced by optical fibers. The prototype is immediately scalable to catheter dimensions. The absence of conductors will provide intrinsic galvanic isolation as well as radio frequency (RF) and magnetic resonance imaging (MRI) compatibility...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437918/modeling-and-designing-multilayer-2d-perovskite-silicon-bifacial-tandem-photovoltaics-for-high-efficiencies-and-long-term-stability
#5
Haejun Chung, Xingshu Sun, Aditya D Mohite, Rahul Singh, Lokendra Kumar, Muhammad A Alam, Peter Bermel
A key challenge in photovoltaics today is to develop cell technologies with both higher efficiencies and lower fabrication costs than incumbent crystalline silicon (c-Si) single-junction cells. While tandem cells have higher efficiencies than c-Si alone, it is generally challenging to find a low-cost, high-performance material to pair with c-Si. However, the recent emergence of 22% efficient perovskite photovoltaics has created a tremendous opportunity for high-performance, low-cost perovskite / crystalline silicon tandem photovoltaic cells...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437915/rapid-thermal-annealing-treated-spin-on-doped-antireflective-radial-junction-si-nanopillar-solar-cell
#6
Bikash Dev Choudhury, Srinivasan Anand
Radial junction nanopillar Si solar cells are interesting for cost effective efficiency improvement. Here, we address a convenient top-down fabrication of Si nanopillar solar cells using spin-on doping and rapid thermal annealing (RTA) for conformal PN junction formation. Broadband suppressed reflection as low as an average of 5% in the 300-1100 nm wavelength range and un-optimized cell efficiency of 7.3% are achieved. The solar cell performance can be improved by optimization of spin-on-doping and suitable surface passivation...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437892/high-performance-and-low-cost-transparent-electrodes-based-on-ultrathin-cu-layer
#7
David Ebner, Martin Bauch, Theodoros Dimopoulos
Transparent electrodes based on an ultrathin Cu layer, embedded between two dielectrics, are optimized by simulations and experiments. Different dielectrics are screened in transfer matrix simulations for maximizing the broad-band transmittance. Based on this, sputtered electrodes were developed with the Cu embedded between TiO<sub>X</sub>-coated glass or PET substrate and an Al-doped ZnO (AZO) top layer. It is found that, for ultrathin Cu layers, increased sputter power fosters island coalescence, leading to superior optical and electrical performance compared to previously reported Cu-based electrodes...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437824/-neuromodulation-for-the-treatment-of-chronic-pain-what-is-useful
#8
Volker Tronnier
Neuromodulatory techniques have replaced the earlier performed neurolesional procedures to treat chronic pain syndromes with only a few exceptions. Nevertheless these procedures are invasive with respective risks and complications and therefore conservative physical, psychological pharmacological as well as interventional treatments should be performed first. Because this therapy is costly, the indication has to be proven carefully with a strict patient selection and also the long-term results have to be considered...
April 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28437795/effect-of-using-the-heart-score-in-patients-with-chest-pain-in-the-emergency-department-a-stepped-wedge-cluster-randomized-trial
#9
Judith M Poldervaart, Johannes B Reitsma, Barbra E Backus, Hendrik Koffijberg, Rolf F Veldkamp, Monique E Ten Haaf, Yolande Appelman, Herman F J Mannaerts, Jan-Melle van Dantzig, Madelon van den Heuvel, Mohamed El Farissi, Bernard J W M Rensing, Nicolette M S K J Ernst, Ineke M C Dekker, Frank R den Hartog, Thomas Oosterhof, Ghizelda R Lagerweij, Eugene M Buijs, Maarten W J van Hessen, Marcel A J Landman, Roland R J van Kimmenade, Luc Cozijnsen, Jeroen J J Bucx, Clara E E van Ofwegen-Hanekamp, Maarten-Jan Cramer, A Jacob Six, Pieter A Doevendans, Arno W Hoes
Background: The HEART (History, Electrocardiogram, Age, Risk factors, and initial Troponin) score is an easy-to-apply instrument to stratify patients with chest pain according to their short-term risk for major adverse cardiac events (MACEs), but its effect on daily practice is unknown. Objective: To measure the effect of use of the HEART score on patient outcomes and use of health care resources. Design: Stepped-wedge, cluster randomized trial...
April 25, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28437777/testing-decontaminated-sediments-as-a-substrate-for-ornamentals-in-field-nursery-plantations
#10
Francesca Ugolini, Costanza Calzolari, Giuseppe Mario Lanini, Luciano Massetti, Stefania Pollaki, Antonio Raschi, Francesco Sabatini, Giacomo Tagliaferri, Fabrizio Ungaro, Daniele Massa, Maurizio Antonetti, Carlos Garcia Izquierdo, Cristina Macci, Grazia Masciandaro
When canals and harbours are dredged, huge amount of polluted sediments has to be stocked and transported to the landfill with incredibly high costs of management. Among the remediation techniques for the reclamation of polluted sediments and soils, phytoremediation represents a sustainable and effective technique though still not fully promoted or commercialized. In this study we have tested the suitability for plant nursing of a substrate resulting from sediments dredged from a canal and treated with phytoremediation...
April 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28437769/contamination-study-of-forest-track-soils-located-in-a-recreational-area-and-filled-with-steel-industry-waste-30years-ago
#11
Leticia Gómez-Nubla, Julene Aramendia, Silvia Fdez-Ortiz de Vallejuelo, Juan Manuel Madariaga
The reuse of waste is increasingly widespread in order to avoid the exploitation of natural resources and to reduce costs. An example of that reuse is the employment of steel slag, a by-product from the steel making process. When the steel is produced through an electric arc furnace (EAF), two types of slag are generated: black and white slag. One application rarely used for this waste is as filler in forest tracks. In this work, two forest tracks of the Basque Country (northern Spain) filled with black and white slag 19 and 35years ago, respectively, have been studied...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437749/epilepsy-awareness-and-emergency-rescue-training-ignorance-is-bliss
#12
Rohit Shankar, Caryn Jory, Brendan McLean, Phil Tittensor, Matthew Walker
Status epilepticus (SE) has a high mortality rate and is associated with complications such as neurological deficit and cognitive decline. Buccal midazolam is the recommended emergency rescue medication in the UK to reduce the duration of a seizure and SE. It should be administered by an appropriately trained person. There are agreed guidelines on training standards for its administration in the UK produced by the Joint Epilepsy Council of the United Kingdom and Ireland. Training should provide an overview of epilepsy to facilitate safe, person-centered care and appropriate administration of rescue medication to people with epilepsy (PWE)...
April 19, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28437699/structure-and-dynamics-of-cetyltrimethylammonium-chloride-sodium-dodecylsulfate-ctac-sds-catanionic-vesicles-high-value-nano-vehicles-from-low-cost-surfactants
#13
Irene Russo Krauss, Riccardo Imperatore, Augusta De Santis, Alessandra Luchini, Luigi Paduano, Gerardino D'Errico
HYPOTHESIS: Catanionic vesicles based on large-scale produced surfactants represent a promising platform for the design of innovative, effective and relatively inexpensive nano-vehicles for a variety of actives. Structural, dynamic and functional behavior of these aggregates is finely tuned by the molecular features of their components and can be opportunely tailored for their applications as drug carriers. EXPERIMENTS: Here we investigate the aggregates formed by CTAC and SDS, two of the most diffused surfactants, by means of Dynamic Light Scattering, Small Angle Neutron Scattering and Electron Paramagnetic Resonance spectroscopy (EPR)...
April 12, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28437647/comparison-of-landfarming-amendments-to-improve-bioremediation-of-petroleum-hydrocarbons-in-niger-delta-soils
#14
David M Brown, Samson Okoro, Juami van Gils, Rob van Spanning, Matthijs Bonte, Tony Hutchings, Olof Linden, Uzoamaka Egbuche, Kim Bye Bruun, Jonathan W N Smith
Large scale landfarming experiments, using an extensive range of treatments, were conducted in the Niger-Delta, Nigeria to study the degradation of oil in contaminated soils. In this work the effect of nutrient addition, biosurfactant, Eisenia fetida (earthworm) enzyme extract, bulking and sorption agents and soil neutralization were tested. It was found that these treatments were successful in removing up to 53% of the total petroleum hydrocarbon in the soil within 16 weeks. A comparison between treatments demonstrated that most were no more effective than agricultural fertilizer addition alone...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437620/american-association-of-clinical-endocrinologists-and-american-college-of-endocrinology-guidelines-for-management-of-dyslipidemia-and-prevention-of-cardiovascular-disease
#15
Paul S Jellinger, Yehuda Handelsman, Paul D Rosenblit, Zachary T Bloomgarden, Vivian A Fonseca, Alan J Garber, George Grunberger, Chris K Guerin, David S H Bell, Jeffrey I Mechanick, Rachel Pessah-Pollack, Kathleen Wyne, Donald Smith, Eliot A Brinton, Sergio Fazio, Michael Davidson
OBJECTIVE: The development of these guidelines is mandated by the American Association of Clinical Endocrinologists (AACE) Board of Directors and American College of Endocrinology (ACE) Board of Trustees and adheres with published AACE protocols for the standardized production of clinical practice guidelines (CPGs). METHODS: Recommendations are based on diligent reviews of the clinical evidence with transparent incorporation of subjective factors, according to established AACE/ACE guidelines for guidelines protocols...
April 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28437610/long-acting-release-formulation-of-exendin-4-based-on-biomimetic-mineralization-for-type-2-diabetes-therapy
#16
Wei Chen, Guohao Wang, Bryant C Yung, Gang Liu, Zhiyong Qian, Xiaoyuan Chen
Exendin-4 has been clinically exploited for treating type 2 diabetes, but the short circulation half-life and multiple daily injections limit its widespread application with respect to poor patient compliance, low efficacy, and high treatment cost. In this study, a potent long-acting release system based on biomimetic mineralization was constructed for biocompatible and sustained exendin-4 delivery. Similar to natural biomineralization, exendin-4 can be mineralized to form nano-sized mineral solids by means of the reaction between acidic amino acid residues and calcium ions in a supersaturated environment with negligible influence on peptide bioactivity...
April 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28437607/the-real-cost-of-speed-the-effect-of-a-time-saving-multiple-time-stepping-algorithm-on-the-accuracy-of-molecular-dynamics-simulations
#17
Sabine Reisser, David Poger, Martin Stroet, Alan Edward Mark
To enhance efficiency in molecular dynamics simulations, forces that vary slowly are often evaluated less often than those that vary rapidly. We show that the multiple-time-step algorithm implemented in recent versions of GROMACS results in significant differences in the collective properties of a system under conditions where the system was previously stable. The implications of changing the simulation algorithm without assessment of potential artifacts on the parameterisation and transferability of effective force fields are discussed...
April 24, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28437556/inheritance-of-bacterial-spot-resistance-in-capsicum-annuum-var-annuum
#18
L R A Silva, R Rodrigues, S Pimenta, J W S Correa, M S B Araújo, C S Bento, C P Sudré
Since 2008, Brazil is the largest consumer of agrochemicals, which increases production costs and risks of agricultural products, environment, and farmers' contamination. Sweet pepper, which is one of the main consumed vegetables in the country, is on top of the list of the most sprayed crops. The bacterial spot, caused by Xanthomonas spp, is one of the most damaging diseases of pepper crops. Genetic resistant consists of a suitable way of disease control, but development of durable resistant cultivars as well as understanding of plant-bacterium interaction is being a challenge for plant breeders and pathologists worldwide...
April 20, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28437490/the-diagnosis-and-initial-treatment-of-patellofemoral-disorders
#19
Alan C Merchant, John P Fulkerson, Wayne Leadbetter
Our purpose is to provide simple guidelines for the diagnosis and early care of patellofemoral disorders. Any clinician who treats knee problems, including family practitioners, rheumatologists, orthopedic surgeons, or physical therapists, must know how to make the correct diagnosis, or at least a presumptive diagnosis, at the initial visit. This can avoid unneeded and costly tests, ineffective treatment, and even damaging exercises and unnecessary surgery. The diagnosis of patellofemoral disorders is confusing because they can have many causes...
March 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28437440/synthesizer-expediting-synthesis-studies-from-context-free-data-with-information-retrieval-techniques
#20
Lisa M Gandy, Jordan Gumm, Benjamin Fertig, Anne Thessen, Michael J Kennish, Sameer Chavan, Luigi Marchionni, Xiaoxin Xia, Shambhavi Shankrit, Elana J Fertig
Scientists have unprecedented access to a wide variety of high-quality datasets. These datasets, which are often independently curated, commonly use unstructured spreadsheets to store their data. Standardized annotations are essential to perform synthesis studies across investigators, but are often not used in practice. Therefore, accurately combining records in spreadsheets from differing studies requires tedious and error-prone human curation. These efforts result in a significant time and cost barrier to synthesis research...
2017: PloS One
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