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https://www.readbyqxmd.com/read/28108466/post-glucose-load-measures-of-insulin-resistance-and-prognosis-of-nondiabetic-patients-with-ischemic-stroke
#1
Yuesong Pan, Jing Jing, Weiqi Chen, Huaguang Zheng, Qian Jia, Donghua Mi, Hao Li, Xingquan Zhao, Liping Liu, Chunxue Wang, Herbert Y Gaisano, Yan He, Yilong Wang, Yongjun Wang
BACKGROUND: Insulin resistance is associated with an increased risk of cardiovascular events in the general population. This study aimed to estimate the association between post-glucose load measures of insulin resistance and prognosis of nondiabetic patients with ischemic stroke. METHODS AND RESULTS: Data were derived from the ACROSS-China (Abnormal Glucose Regulation in Patients with Acute Stroke across China) registry. Patients with ischemic stroke without a history of diabetes mellitus were included...
January 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28108193/temporal-trends-of-polychlorinated-biphenyls-serum-levels-in-subjects-living-in-a-highly-polluted-area-from-2003-to-2015-a-follow-up-study
#2
Elena Raffetti, Fabrizio Speziani, Francesco Donato, Lucia Leonardi, Grazia Orizio, Carmelo Scarcella, Pietro Apostoli, Michele Magoni
INTRODUCTION: A chemical factory located in Brescia, an industrialized town in North Italy, produced polychlorinated biphenyls (PCBs) since the 1930s to the 1980s, determining a relevant pollution of soil, food and people. Since 2001, following a survey carried out in the general population living in the town, the individuals with PCB serum levels higher than the reference entered a follow-up study. METHODS: We performed a prospective cohort study including subjects with at least three PCB measures during the period 2003-2015...
January 16, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28107705/incorporation-of-antimicrobial-peptides-in-nanostructured-lipid-membrane-mimetic-bilayer-cubosomes
#3
Thomas G Meikle, Alexandru Zabara, Lynne J Waddington, Frances Separovic, Calum J Drummond, Charlotte E Conn
The inverse bicontinuous lipidic cubic phase offers a simple and robust membrane mimetic with the ability to encapsulate peptides, potentially increasing bioavailability, while also offering a platform from which functionalized, targeted nanoparticles can be developed. Herein we have investigated the use of a number of cubic phase nanoparticle systems with encapsulated antimicrobial peptides gramicidin A', melittin, and alamethicin. The optimal peptide loading ranges, over which cubic symmetry was retained, were determined using small angle X-ray scattering...
January 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28106428/experimental-evidence-for-sign-reversal-of-the-hall-coefficient-in-three-dimensional-metamaterials
#4
Christian Kern, Muamer Kadic, Martin Wegener
Effectively inverting the sign of material parameters is a striking possibility arising from the concept of metamaterials. Here, we show that the electrical properties of a p-type semiconductor can be mimicked by a metamaterial solely made of an n-type semiconductor. By fabricating and characterizing three-dimensional simple-cubic microlattices composed of interlocked hollow semiconducting tori, we demonstrate that sign and magnitude of the effective metamaterial Hall coefficient can be adjusted via a tori separation parameter-in agreement with previous theoretical and numerical predictions...
January 6, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28106198/ten-gram-scale-sic-sio2-nanowires-high-yield-synthesis-towards-industrialization-in-situ-growth-mechanism-and-their-peculiar-photoluminescence-and-electromagnetic-wave-absorption-properties
#5
Z J Li, H Y Yu, G Y Song, J Zhao, H Zhang, M Zhang, A L Meng, Q D Li
SiC@SiO2 nanowires, as a functional nanocomposite, have attracted widespread attention due to their fascinating performance and broad application prospect. However, the low-cost, high yield preparation of large-scale SiC@SiO2 nanowires is still a bottleneck, which hinders their industrial application. Herein, a carbothermal reduction strategy has been developed to synthesize SiC@SiO2 nanowires, which breaks through the handicap of the traditional growth pattern that uses the aid of a substrate. Systematic characterization results illustrate that the yield of the as-obtained products greatly depends on the heating rate, and ten-gram scale SiC@SiO2 nanowires (∼27...
January 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28105741/potential-use-of-cubic-phase-masks-for-extending-the-range-of-clear-vision-in-presbyopes-initial-calculation-and-simulation-studies
#6
Justo Arines, Citlalli Almaguer, Eva Acosta
PURPOSE: In this paper we analyse the potential use of a non-symmetrical optical element, a cubic phase mask, for extending the range of clear vision of presbyopic eyes. Additionally, we will discuss the appropriateness of the visual Strehl ratio to analyse this sort of presbyopic solution based on non-symmetrical phase masks contrasted with through-focus retinal images. METHODS: In order to evaluate the performance of the cubic phase mask we employed computational Fourier Optics to compute the different visual Strehl criteria as well as simulate the retinal images...
January 20, 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28102312/correlations-of-charge-neutrality-level-with-electronic-structure-and-p-d-hybridization
#7
Arkaprava Das, Subodh K Gautam, D K Shukla, Fouran Singh
The formation of charge neutrality level (CNL) in highly conducting Cadmium oxide (CdO) thin films is demonstarted by the observed variation in the band gap upon annealing and doping. It may be explained by the observation that Tin (Sn) doping breaks the perfect periodicity of CdO cubic crystal structure and creates virtual gap states (ViGS). The level of local CNL resides at the branch point of ViGS, making the energy at which native defect's character changes from predominantly donor-like below CNL to predominantly acceptor-like above the CNL and a schematic band diagram is developed to substantiate the same...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28099825/transmission-of-extensively-drug-resistant-tuberculosis-in-south-africa
#8
N Sarita Shah, Sara C Auld, James C M Brust, Barun Mathema, Nazir Ismail, Pravi Moodley, Koleka Mlisana, Salim Allana, Angela Campbell, Thuli Mthiyane, Natashia Morris, Primrose Mpangase, Hermina van der Meulen, Shaheed V Omar, Tyler S Brown, Apurva Narechania, Elena Shaskina, Thandi Kapwata, Barry Kreiswirth, Neel R Gandhi
Background Drug-resistant tuberculosis threatens recent gains in the treatment of tuberculosis and human immunodeficiency virus (HIV) infection worldwide. A widespread epidemic of extensively drug-resistant (XDR) tuberculosis is occurring in South Africa, where cases have increased substantially since 2002. The factors driving this rapid increase have not been fully elucidated, but such knowledge is needed to guide public health interventions. Methods We conducted a prospective study involving 404 participants in KwaZulu-Natal Province, South Africa, with a diagnosis of XDR tuberculosis between 2011 and 2014...
19, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28099807/investigation-of-donor-acceptor-stenhouse-adducts-as-new-visible-wavelength-responsive-switching-elements-for-lipid-based-liquid-crystalline-systems
#9
Shiyang Jia, Joanne D Du, Adrian M Hawley, Wye-Khay Fong, Bim Graham, Ben J Boyd
The ability of Donor Acceptor Stenhouse Adducts (DASAs) to function as a green light responsive switch for lipid-based liquid crystalline drug delivery systems was investigated. The host matrix comprising phytantriol cubic phase was selected due to its high sensitivity towards changes in lipid packing. Small angle X-ray scattering demonstrated that the matrix undergoes rapid and fully reversible order-order phase transitions upon irradiation with 532 nm light, converting between the bicontinuous cubic phase and reversed hexagonal phases...
January 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28099412/ultrafast-nonthermal-photo-magnetic-recording-in-a-transparent-medium
#10
A Stupakiewicz, K Szerenos, D Afanasiev, A Kirilyuk, A V Kimel
Discovering ways to control the magnetic state of media with the lowest possible production of heat and at the fastest possible speeds is important in the study of fundamental magnetism, with clear practical potential. In metals, it is possible to switch the magnetization between two stable states (and thus to record magnetic bits) using femtosecond circularly polarized laser pulses. However, the switching mechanisms in these materials are directly related to laser-induced heating close to the Curie temperature...
January 18, 2017: Nature
https://www.readbyqxmd.com/read/28099028/chemical%C3%A2-insights%C3%A2-into%C3%A2-the%C3%A2-design%C3%A2-and%C3%A2-development%C3%A2-of%C3%A2-face-centered-cubic%C3%A2-ruthenium%C3%A2-catalysts%C3%A2-for%C3%A2-fischer-tropsch%C3%A2-synthesis
#11
Wei-Zhen Li, Jin-Xun Liu, Jun Gu, Wu Zhou, Siyu Yao, Rui Si, Yu Guo, Hai-Yan Su, Chun-Hua Yan, Wei-Xue Li, Ya-Wen Zhang, Ding Ma
Ruthenium is a promising low temperature catalyst for Fischer-Tropsch synthesis (FTS). However, its scarcity and modest specific activity limits its widespread industrialization. We demonstrate here a strategy of tuning the crystal phase of catalysts to expose denser active sites for a higher mass-specific activity. Density functional theory calculations show that upon CO dissociation, there are a number of open facets with modest barrier available on the face-centered cubic (fcc) Ru, but only few step edges with a lower barrier on conventional hexagonal-closest packed (hcp) Ru...
January 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28098986/investigation-of-the-energy-transfer-mechanism-in-ho-3-and-yb-3-codoped-lu2o3-phosphor-with-efficient-near-infrared-downconversion
#12
Guotao Xiang, Yan Ma, Xianju Zhou, Sha Jiang, Li Li, Xiaobing Luo, Zhendong Hao, Xia Zhang, Guo-Hui Pan, Yongshi Luo, Jiahua Zhang
A high-temperature solid-state method was used to synthesize the Ho(3+)- and Yb(3+)-codoped cubic Lu2O3 powders. The crystal structures of the as-prepared powders were characterized by X-ray diffraction. The energy-transfer (ET) phenomenon between Ho(3+) ions and Yb(3+) ions was verified by the steady-state spectra including visible and near-infrared (NIR) regions. Beyond that, the decay curves were also measured to certify the existence of the ET process. The downconversion phenomena appeared when the samples were excited by 446 nm wavelength corresponding to the transition of Ho(3+): (5)I8→(5)G6/(5)F1...
January 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28098223/dispersion-of-nonresonant-third-order-nonlinearities-in-silicon-carbide
#13
Francesco De Leonardis, Richard A Soref, Vittorio M N Passaro
In this paper we present a physical discussion of the indirect two-photon absorption (TPA) occuring in silicon carbide with either cubic or wurtzite structure. Phonon-electron interaction is analyzed by finding the phonon features involved in the process as depending upon the crystal symmetry. Consistent physical assumptions about the phonon-electron scattering mechanisms are proposed in order to give a mathematical formulation to predict the wavelength dispersion of TPA and the Kerr nonlinear refractive index n2...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28095369/implanted-muon-spin-spectroscopy-on-2-o-adamantane-a-model-system-that-mimics-the-liquid-formula-see-text-glasslike-transitions
#14
M Romanini, J L Tamarit, L C Pardo, F J Bermejo, R Fernandez-Perea, F L Pratt
The transition taking place between two metastable phases in 2-O-adamantane, namely the [Formula: see text] cubic, rotator phase and the lower temperature P21/c, Z  =  4 substitutionally disordered crystal is studied by means of muon spin rotation and relaxation techniques. Measurements carried out under zero, weak transverse and longitudinal fields reveal a temperature dependence of the relaxation parameters strikingly similar to those exhibited by structural glass[Formula: see text]liquid transitions (Bermejo et al 2004 Phys...
January 17, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28094951/diabat-interpolation-for-polymorph-free-energy-differences
#15
Kartik Kamat, Baron Peters
Existing methods to compute free energy differences between polymorphs use harmonic approximations, advanced non-Boltzmann bias sampling techniques, and/or multistage free energy perturbations. This work demonstrates how Bennett's diabat interpolation method (J.Comp. Phys. 1976, 22, 245) can be combined with energy gaps from lattice switch Monte Carlo techniques (Phys. Rev. E 2001, 61, 906) to swiftly estimate polymorph free energy differences. The new method requires only two unbiased molecular dynamics simulations, one for each polymorph...
January 17, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28094317/data-mining-of-molecular-dynamics-data-reveals-li-diffusion-characteristics-in-garnet-li7la3zr2o12
#16
Chi Chen, Ziheng Lu, Francesco Ciucci
Understanding Li diffusion in solid conductors is essential for the next generation Li batteries. Here we show that density-based clustering of the trajectories computed using molecular dynamics simulations helps elucidate the Li diffusion mechanism within the Li7La3Zr2O12 (LLZO) crystal lattice. This unsupervised learning method recognizes lattice sites, is able to give the site type, and can identify Li hopping events. Results show that, while the cubic LLZO has a much higher hopping rate compared to its tetragonal counterpart, most of the Li hops in the cubic LLZO do not contribute to the diffusivity due to the dominance of back-and-forth type jumps...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28093204/chin-symphysis-bone-allograft-and-platelet-rich-fibrin-is-the-combination-effective-in-repair-of-alveolar-cleft
#17
Bijan Movahedian Attar, Navid Naghdi, Milad Etemadi Sh, Mojdeh Mehdizadeh
PURPOSE: Secondary grafting of alveolar defects with iliac crest bone is a common treatment method in cleft patients. The aim of this study was to evaluate the effectiveness of the combination of symphysis bone, allograft, and platelet-rich fibrin in regeneration of alveolar defects compared with iliac bone graft. MATERIALS AND METHODS: In this randomized clinical trial, patients with unilateral alveolar defects were divided randomly into two categories. Group A comprised patients in whom the combination of chin symphysis bone plus allogeneic bone material plus leukocyte- and platelet-rich fibrin was considered for treatment...
December 26, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28091605/cubosomes-from-hierarchical-self-assembly-of-poly-ionic-liquid-block-copolymers
#18
Hongkun He, Khosrow Rahimi, Mingjiang Zhong, Ahmed Mourran, David R Luebke, Hunaid B Nulwala, Martin Möller, Krzysztof Matyjaszewski
Cubosomes are micro- and nanoparticles with a bicontinuous cubic two-phase structure, reported for the self-assembly of low molecular weight surfactants, for example, lipids, but rarely formed by polymers. These objects are characterized by a maximum continuous interface and high interface to volume ratio, which makes them promising candidates for efficient adsorbents and host-guest applications. Here we demonstrate self-assembly to nanoscale cuboidal particles with a bicontinuous cubic structure by amphiphilic poly(ionic liquid) diblock copolymers, poly(acrylic acid)-block-poly(4-vinylbenzyl)-3-butyl imidazolium bis(trifluoromethylsulfonyl)imide, in a mixture of tetrahydrofuran and water under optimized conditions...
January 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28091522/cr-incorporated-phase-transformation-in-y2o3-under-ion-irradiation
#19
N Li, S K Yadav, Y Xu, J A Aguiar, J K Baldwin, Y Q Wang, H M Luo, A Misra, B P Uberuaga
Under irradiation, chemical species can redistribute in ways not expected from equilibrium behavior. In oxide-dispersed ferritic alloys, the phenomenon of irradiation-induced Cr redistribution at the metal/oxide interfaces has drawn recent attention. Here, the thermal and irradiation stability of the FeCr/Y2O3 interface has been systematically studied. Trilayer thin films of 90 nm Fe - 20 at.% Cr (1(st) layer)/100 nm Y2O3 (2(nd) layer)/135 nm Fe - 20 at.% Cr (3(rd) layer) were deposited on MgO substrates at 500 °C...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28090534/erratum-to-be-care-the-risk-of-under-fit-in-dose-response-meta-analysis-when-using-cubic-spline
#20
(no author information available yet)
[This corrects the article DOI: 10.21037/atm.2016.09.27.].
December 2016: Annals of Translational Medicine
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