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https://www.readbyqxmd.com/read/28103462/low-adherence-to-mediterranean-diet-in-portugal-pregnant-women-nutrition-in-portugal-and-its-repercussions
#1
REVIEW
Luis Pereira-da-Silva, Elisabete Pinto
INTRODUCTION: Portuguese population is drifting away from the Mediterranean diet-like pattern. In this context, the current nutritionalstatus of women of childbearing age and of pregnant Portuguese women and their growing fetuses is critically reviewed. MATERIAL AND METHODS: A narrative critical review was performed on recent published high quality studies assessing diet and nutritional status of women of childbearing age and pregnant women and its influence on the nutritional status of their offspring...
October 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28103438/acylguanidine-beta-secretase-1-inhibitors-a-combined-experimental-and-free-energy-perturbation-study
#2
Henrik Keränen, Laura Pérez-Benito, Myriam Ciordia, Francisca Delgado, Thomas B Steinbrecher, Daniel Oehlrich, Herman W T Van Vlijmen, Andrés A Trabanco, Gary Tresadern
A series of acylguanidine beta secretase 1 (BACE1) inhibitors with modified scaffold and P3 pocket substituent was synthesized and studied with Free Energy Perturbation (FEP) calculations. The resulting molecules showed potencies in enzymatic BACE1 inhibition assays up to 1 nM. The correlation between the predicted activity from the FEP calculations and the experimental activity was good for the P3 pocket substituents. The average mean unsigned error (MUE) between prediction and experiment was 0.68 ± 0.17 kcal/mol for the default 5 ns lambda window simulation time improving to 0...
January 19, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28103132/functional-gains-in-energy-and-cell-metabolism-after-tspo-gene-insertion
#3
Guo-Jun Liu, Ryan J Middleton, Winnie Wai-Ying Kam, David Y Chin, Claire R Hatty, Ronald H Y Chan, Richard B Banati
Recent loss-of-function studies in tissue-specific as well as global Tspo (Translocator Protein 18 kDa) knockout mice have not confirmed its long assumed indispensability for the translocation of cholesterol across the mitochondrial inter-membrane space, a rate-limiting step in steroid biosynthesis. Instead, recent studies in global Tspo knockout mice indicate that TSPO may play a more fundamental role in cellular bioenergetics, which may include the indirect down-stream regulation of transport or metabolic functions...
January 19, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28103041/substituent-effects-on-the-absorption-and-fluorescence-properties-of-anthracene
#4
Salsabil Abou-Hatab, Vincent A Spata, Spiridoula Matsika
Substitution can be used to efficiently tune the photophysical properties of chro- mophores. In this study, we examine the effect of substituents on the absorption and fluorescence properties of anthracene. The effects of mono-, di-, and quad- substitution of electron donating and withdrawing functional groups were explored. In addition, the influence of donor-acceptor substituent pair and the position of substitution were in- vestigated. Eleven functional groups were varied on positions 1, 2 and 9 of anthracene, and on position 6 of 2-methoxyanthracene and 2-carboxyanthracene...
January 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28103040/strain-engineered-oxygen-vacancies-in-camno3-thin-films
#5
Ravini U Chandrasena, Weibing Yang, Qingyu Lei, Mario Ulises Delgado-Jaime, Kanishka D Wijesekara, Maryam Golalikhani, Bruce Davidson, Elke Arenholz, Keisuke Kobayashi, Masaaki Kobata, Frank M F de Groot, Ulrich Aschauer, Nicola A Spaldin, Xiaoxing Xi, Alexander X Gray
We demonstrate a novel pathway to control and stabilize oxygen vacancies in complex transition-metal oxide thin films. Using atomic layer-by-layer pulsed laser deposition (PLD) from two separate targets, we synthesize high-quality single-crystalline CaMnO3 films with systematically varying oxygen vacancy defect formation energies as controlled by coherent tensile strain. The systematic increase of the oxygen vacancy content in CaMnO3 as a function of applied in-plane strain is observed and confirmed experimentally using high-resolution soft x-ray absorption spectroscopy (XAS) in conjunction with bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES)...
January 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28103038/near-full-composition-range-high-quality-gaas1-xsbx-nanowires-grown-by-molecular-beam-epitaxy
#6
Lixia Li, Dong Pan, Yongzhou Xue, Xiaolei Wang, Miaoling Lin, Dan Su, Qinglin Zhang, Xuezhe Yu, Hyok So, Dahai Wei, Baoquan Sun, PingHeng Tan, Anlian Pan, Jianhua Zhao
Here we report on the Ga self-catalyzed growth of near full-composition-range energy-gap-tunable GaAs1-xSbx nanowires by molecular-beam epitaxy. GaAs1-xSbx nanowires with different Sb content are systematically grown by tuning the Sb and As fluxes, and the As background. We find that GaAs1-xSbx nanowires with low Sb content can be grown directly on Si (111) substrates (0 ≤ x ≤ 0.60) and GaAs nanowire stems (0 ≤ x ≤ 0.50) by tuning the Sb and As fluxes. To obtain GaAs1-xSbx nanowires with x ranging from 0...
January 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28103013/building-nanoporous-metal-organic-frameworks-armour-on-fibers-for-high-performance-composite-materials
#7
Xiaobin Yang, Xu Jiang, Yudong Huang, Zhanhu Guo, Lu Shao
The nanoporous Metal-Organic Frameworks (MOFs) "armour" is in situ intergrown onto the surfaces of carbon fibers (CFs) by nitric acid oxidization to supply nucleation sites, and serves as a novel interfacial linker between the fiber and polymer matrix and a smart cushion to release interior and exterior applied forces. Simultaneous enhancements of the interfacial and interlaminar shear strength as well as the tensile strength of CFs were achieved. With the aid of an ultrasonic "cleaning" process, the optimized surface energy and tensile strength of CFs with a MOF "armour" are 83...
January 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28102828/thermodynamic-scaling-of-relaxation-insights-from-anharmonic-elasticity
#8
Sebastiano Bernini, Francesco Puosi, Dino Leporini
We investigate by Molecular Dynamics simulations of a molecular liquid the thermodynamic scaling (TS) of the structural relaxation time $\tau_\alpha$ in terms of the quantity $T\rho^{-\gamma_{ts}}$ where T and rho are the temperature and the density, respectively. The liquid does not exhibit strong virial-energy correlations. We propose how to evaluate both the characteristic exponent $\gamma_{ts}$ and the TS master curve by resorting to experimentally accessible quantities characterising the anharmonic elasticity and no details about the microscopic interactions...
January 19, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28102636/thalamic-deep-brain-stimulation-for-refractory-tourette-syndrome-clinical-evidence-for-increasing-disbalance-of-therapeutic-effects-and-side-effects-at-long-term-follow-up
#9
Anouk Y J M Smeets, Annelien A Duits, Albert F G Leentjens, Koen Schruers, Vivianne van Kranen-Mastenbroek, Veerle Visser-Vandewalle, Yasin Temel, Linda Ackermans
OBJECTIVE: Thalamic deep brain stimulation (DBS) is effective in reducing tics in patients with refractory Tourette syndrome at the short-term. Here, we report on the long-term outcome. MATERIALS AND METHODS: Seven patients underwent bilateral DBS between 2001 and 2008. The target was the centromedian nucleus, substantia periventricularis and nucleus ventro-oralis internus cross point of the thalamus. The effect on tics and side effects were evaluated with a variable follow-up duration of 12 to 78 months...
January 19, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28102378/a-high-performance-supercapacitor-electrode-based-on-tremella-like-nic2o4-nio-core-shell-hierarchical-nanostructures-on-nickel-foam
#10
Dong He, Guolong Liu, Anqi Pang, Yang Jiang, Hui Suo, Chun Zhao
Tremella-like nickel oxalate@nickel oxide (NiC2O4@NiO) core/shell hierarchical nanostructures have been successfully synthesized on nickel foam, using Ni foam as a current collector, a Ni source and a three-dimensional (3D) substrate, through a facile hydrothermal method followed by an electrochemical activation process. The prepared samples can be directly used as binder-free electrodes for supercapacitors. The tremella-like morphology, together with the NiC2O4 nanoblocks on 3D Ni foam, significantly increases the amount of active sites for redox reactions and the conductivity of the electrode material, shortens the diffusion pathway for ions, facilitates the effective penetration of the electrolyte, and lowers the intrinsic equivalent series resistance, demonstrating good potential for energy storage application...
January 19, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28102368/novel-electron-phonon-relaxation-pathway-in-graphite-revealed-by-time-resolved-raman-scattering-and-angle-resolved-photoemission-spectroscopy
#11
Jhih-An Yang, Stephen Parham, Daniel Dessau, Dmitry Reznik
Time dynamics of photoexcited electron-hole pairs is important for a number of technologies, in particular solar cells. We combined ultrafast pump-probe Raman scattering and photoemission to directly follow electron-hole excitations as well as the G-phonon in graphite after an excitation by an intense laser pulse. This phonon is known to couple relatively strongly to electrons. Cross-correlating effective electronic and phonon temperatures places new constraints on model-based fits. The accepted two-temperature model predicts that G-phonon population should start to increase as soon as excited electron-hole pairs are created and that the rate of increase should not depend strongly on the pump fluence...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102356/unlocking-the-potential-of-sns2-transition-metal-catalyzed-utilization-of-reversible-conversion-and-alloying-reactions
#12
Zhi Xiang Huang, Ye Wang, Bo Liu, Dezhi Kong, Jun Zhang, Tupei Chen, Hui Ying Yang
The alloying-dealloying reactions of SnS2 proceeds with the initial conversion reaction of SnS2 with lithium that produces Li2S. Unfortunately, due to the electrochemical inactivity of Li2S, the conversion reaction of SnS2 is irreversible, which significantly limit its potential applications in lithium-ion batteries. Herein, a systematic understanding of transition metal molybdenum (Mo) as a catalyst in SnS2 anode is presented. It is found that Mo catalyst is able to efficiently promote the reversible conversion of Sn to SnS2...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102338/strengthening-of-ceramic-based-artificial-nacre-via-synergistic-interactions-of-1d-vanadium-pentoxide-and-2d-graphene-oxide-building-blocks
#13
Andrea Knöller, Christian P Lampa, Felix von Cube, Tingying Helen Zeng, David C Bell, Mildred S Dresselhaus, Zaklina Burghard, Joachim Bill
Nature has evolved hierarchical structures of hybrid materials with excellent mechanical properties. Inspired by nacre's architecture, a ternary nanostructured composite has been developed, wherein stacked lamellas of 1D vanadium pentoxide nanofibres, intercalated with water molecules, are complemented by 2D graphene oxide (GO) nanosheets. The components self-assemble at low temperature into hierarchically arranged, highly flexible ceramic-based papers. The papers' mechanical properties are found to be strongly influenced by the amount of the integrated GO phase...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102313/cultivation-and-energy-efficient-harvesting-of-microalgae-using-thermoreversible-sol-gel-transition
#14
Bendy Estime, Dacheng Ren, Radhakrishna Sureshkumar
Microalgae represent a promising source of renewable biomass for the production of biofuels and valuable chemicals. However, energy efficient cultivation and harvesting technologies are necessary to improve economic viability. A Tris-Acetate-Phosphate-Pluronic (TAPP) medium that undergoes a thermoreversible sol-gel transition is developed to efficiently culture and harvest microalgae without affecting the productivity as compared to that in traditional culture in a well-mixed suspension. After seeding microalgae in the TAPP medium in a solution phase at 15 °C, the temperature is increased by 7 °C to induce gelation...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102239/subcycle-quantum-electrodynamics
#15
C Riek, P Sulzer, M Seeger, A S Moskalenko, G Burkard, D V Seletskiy, A Leitenstorfer
Squeezed states of electromagnetic radiation have quantum fluctuations below those of the vacuum field. They offer a unique resource for quantum information systems and precision metrology, including gravitational wave detectors, which require unprecedented sensitivity. Since the first experiments on this non-classical form of light, quantum analysis has been based on homodyning techniques and photon correlation measurements. These methods currently function in the visible to near-infrared and microwave spectral ranges...
January 18, 2017: Nature
https://www.readbyqxmd.com/read/28102170/complication-of-a-femoral-fracture-treated-by-intramedullary-nailing-numerical-analysis-of-a-clinical-case
#16
Jakub J Słowiński, Konrad Kudłacik
The aim of this paper is to conduct a numerical analysis of a case of femoral fracture treated by intramedullary nailing and confirm the conditions which led to the formation of a pseudarthrosis at the fracture site. A low-energy femoral fracture was treated by placing a ChFN System intramedullary nail with a derotation pin. Using the finite element method, a bone-implant system was generated which made it possible to observe the displacement area and strains in the region of the fracture gap. The calculations were conducted for 3 variants of the model, using a titanium nail (10 mm and 12 mm) and a steel one (10 mm)...
August 30, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28102070/well-ordered-oxygen-deficient-comoo4-and-fe2o3-nanoplate-arrays-on-3d-graphene-foam-towards-flexible-asymmetric-supercapacitor-with-enhanced-capacitive-properties
#17
Kai Chi, Zheye Zhang, Qi-Ying Lv, Chuyi Xie, Jian Xiao, Fei Xiao, Shuai Wang
In this work, we report the development of well-ordered hydrogenated CoMoO4 (H-CoMoO4) and hydrogenated Fe2O3 (H-Fe2O3) nanoplate arrays on 3D graphene foam (GF), and explore their practice application as binder-free electrodes in assembling flexible all-solid-state asymmetric supercapacitor (ASC) device. Our results show that the monolithic 3D porous GF prepared by solution casting method using Ni foam template possesses large surface area, superior electrical conductivity, and sufficient surface functional groups, which not only facilitate in situ growth of CoMoO4 and Fe2O3 nanoplates on it, but also contribute the double-layer capacitance of resultant supercapacitor...
January 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28102018/microwave-assisted-rapid-synthesis-of-self-assembled-t-nb2o5-nanowires-for-high-energy-hybrid-supercapacitors
#18
Huiling Yang, Henghui Xu, Libin Wang, Lei Zhang, Yunhui Huang, Xianluo Hu
Recently ion-intercalation hybrid supercapacitors with high energy density at high power density have been widely investigated to meet the ever-increasing practical applications. Here a unique hybrid supercapacitor is designed and fabricated using self-assembled orthorhombic-phase niobium oxide@carbon (T-Nb2O5@C) nanowires as an anode and commercially available activated carbon as a cathode. The 3D-interconnected T-Nb2O5@C nanowires have been synthesized via a highly efficient microwave-solvothermal method combined with subsequent thermal treatment...
January 19, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28102007/effects-of-diet-restriction-and-diet-complexity-on-life-history-strategies-in-side-blotched-lizards-uta-stansburiana
#19
Heather M Skinner, Andrew M Durso, Lorin A Neuman-Lee, Susan L Durham, Sarah D Mueller, Susannah S French
Organisms must balance energy invested into self-maintenance, reproduction, and somatic growth over their lifetime. In this study, the effects of diet restriction and diet complexity on side-blotched lizards (Uta stansburiana) were analyzed. Thirty male lizards, housed in the laboratory, were fed either an ad libitum or a restricted diet for 18 days (phase 1). Individuals from both treatments were then assigned to a diet of the same quantity of food that was either simple (only crickets) or complex (crickets, cockroaches, waxworms, and mealworms) for 35 days (phase 2)...
November 2016: Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
https://www.readbyqxmd.com/read/28101970/neuropeptide-y-resists-excess-loss-of-fat-by-lipolysis-in-calorie-restricted-mice-a-trait-potential-for-the-life-extending-effect-of-calorie-restriction
#20
Seongjoon Park, Toshimitsu Komatsu, Sang Eun Kim, Katsuya Tanaka, Hiroko Hayashi, Ryoichi Mori, Isao Shimokawa
Neuropeptide Y (NPY) is an orexigenic peptide that plays an essential role in caloric restriction (CR)-mediated lifespan extension. However, the mechanisms underlying the NPY-mediated effects in CR are poorly defined. Here, we report that NPY deficiency in male mice during CR increases mortality in association with lipodystrophy. NPY(-/-) mice displayed a rapid decrease in body weight and fat mass, as well as increased lipolysis during CR. These alterations in fat regulation were inhibited by the lipolysis inhibitor, acipimox, a treatment associated with reduced mortality...
January 19, 2017: Aging Cell
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