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https://www.readbyqxmd.com/read/28231549/assessing-allergenicity-in-urban-parks-a-nature-based-solution-to-reduce-the-impact-on-public-health
#1
Paloma Cariñanos, Manuel Casares-Porcel, Consuelo Díaz de la Guardia, María Jesús Aira, Jordina Belmonte, Marzia Boi, Belén Elvira-Rendueles, Concepción De Linares, Santiago Fernández-Rodriguez, José María Maya-Manzano, Rosa Pérez-Badía, David Rodriguez-de la Cruz, Francisco Javier Rodríguez-Rajo, Jesús Rojo-Úbeda, Carlos Romero-Zarco, Estefanía Sánchez-Reyes, José Sánchez-Sánchez, Rafael Tormo-Molina, Ana Mª Vega Maray
Urban parks play a key role in the provision of ecosystem services, actively participating in improving the quality of life and welfare of local residents. This paper reports on the application of an index designed to quantify the allergenicity of urban parks in a number of Spanish cities. The index, which records biological and biometric parameters for the tree species growing there, classifies parks in terms of the risk they pose for allergy sufferers, graded as null, low, moderate or high. In this initial phase, the index was applied to 26 green areas in 24 Spanish cities; green areas varied in type (urban park, historical or modern garden, boulevard, square or urban forest), size 1-100 ha), geographical location, species richness, number of trees and tree density (number of trees / ha...
February 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/28231542/in-vitro-biocompatibility-and-proliferative-effects-of-polar-and-non-polar-extracts-of-cucurbita-ficifolia-on-human-mesenchymal-stem-cells
#2
Balakrishnan Aristatile, Ghedeir M Alshammari
Cucurbita ficifolia (C. ficifolia) has been traditionally known for its medicinal properties as an antioxidant, anti-diabetic and anti-inflammatory agent. However, there has been an enduring attention towards the identification of unique method, to isolate the natural components for therapeutic applications. Our study focuses on different polar and non-polar solvents (methanol, hexane and chloroform) to extract the bioactive components from C. ficifolia (pumpkin) and to study the biocompatibility and cytotoxicity effects on human bone marrow-mesenchymal stem cells (hBM-MSCs)...
February 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28231427/risk-factors-of-female-breast-cancer-in-vietnam-a-case-control-study
#3
Phuong Dung Yun Trieu, Claudia Mello-Thoms, Jenny K Peat, Thuan Doan Do, Patrick C Brennan
Purpose: Rates of women with breast cancer have increased rapidly in recent years in Vietnam, with over 10,000 new patients contracting the disease every year. This study was conducted to identify demographic, reproductive and lifestyle risk factors for breast cancer in Vietnam. Materials and Methods: Breast density, demographic, reproductive and lifestyle data of 269 women with breast cancer and 519 age-matched controls were collected in the two largest oncology hospitals in Vietnam (one in the north and one in the south)...
February 20, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28231184/mineral-nutritional-yield-and-nutrient-density-of-locally-adapted-wheat-genotypes-under-organic-production
#4
Sergio Daniel Moreira-Ascarrunz, Hans Larsson, Maria Luisa Prieto-Linde, Eva Johansson
The aim of the present investigation was to investigate the nutritional yield, nutrient density, stability, and adaptability of organically produced wheat for sustainable and nutritional high value food production. This study evaluated the nutritional yield of four minerals (Fe, Zn, Cu, and Mg) in 19 wheat genotypes, selected as being locally adapted under organic agriculture conditions. The new metric of nutritional yield was calculated for each genotype and they were evaluated for stability using the Additive Main effects and Multiplicative Interaction (AMMI) stability analysis and for genotypic value, stability, and adaptability using the Best Linear Unbiased Prediction (BLUP procedure)...
December 20, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231094/can-the-palatability-of-healthy-satiety-promoting-foods-increase-with-repeated-exposure-during-weight-loss
#5
Katherene O-B Anguah, Jennifer C Lovejoy, Bruce A Craig, Malinda M Gehrke, Philip A Palmer, Petra E Eichelsdoerfer, Megan A McCrory
Repeated exposure to sugary, fatty, and salty foods often enhances their appeal. However, it is unknown if exposure influences learned palatability of foods typically promoted as part of a healthy diet. We tested whether the palatability of pulse containing foods provided during a weight loss intervention which were particularly high in fiber and low in energy density would increase with repeated exposure. At weeks 0, 3, and 6, participants (n = 42; body mass index (BMI) 31.2 ± 4.3 kg/m²) were given a test battery of 28 foods, approximately half which had been provided as part of the intervention, while the remaining half were not foods provided as part of the intervention...
February 22, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231017/boosting-hole-mobility-in-coherently-strained-110-oriented-ge-si-core-shell-nanowires
#6
Sonia Conesa-Boj, Ang Li, Sebastian Koelling, Matthias Brauns, Joost Ridderbos, Ton T Nguyen, Marcel A Verheijen, Paul M Koenraad, Floris Arnoud Zwanenburg, Erik P A M Bakkers
The ability of core-shell nanowires to overcome existing limitations of heterostructures is one of the key ingredients for the design of next generation devices. This requires a detailed understanding of the mechanism for strain relaxation in these systems, in order to eliminate strain-induced defect formation and thus to boost important electronic properties such as carrier mobility. Here we demonstrate how the hole mobility of [110]-oriented Ge-Si core-shell nanowires can be substantially enhanced thanks to the realization of large band offset and coherent strain in the system, reaching values as high as 4200 cm(2)/(Vs) at 4K and 1600 cm(2)/(Vs) at room temperature for high hole densities of 1019 cm(-3)...
February 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28230999/design-of-contact-electrodes-for-semiconductor-nanowire-solar-energy-harvesting-devices
#7
Tzu-Ging Lin, Sarath Ramadurgam, Chen Yang
Transparent, low resistive contacts are critical for efficient solar energy harvesting devices. It is important to reconsider the material choices and electrode design as devices move from 2D films to 1D nanostructures. In this paper, we study the effectiveness of indium tin oxide (ITO) and metals, such as Ag and Cu, as contacts in 2D and 1D systems. Although ITO has been studied extensively and developed into an effective transparent contact for 2D devices, our results show that effectiveness does not translate to 1D systems...
February 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28230995/synthesis-of-high-quality-biodiesel-using-feedstock-and-catalyst-derived-from-fish-wastes
#8
Devarapaga Madhu, Rajan Arora, Shalini Sahani, Veena Singh, Yogesh Chandra Sharma
A low cost and high purity calcium oxide (CaO) was prepared from waste crab shells which were extracted from the dead crabs, used as efficient solid base catalyst in the synthesis of biodiesel. Raw fish oil was extracted from the waste parts of fish through mechanical expeller followed by solvent extraction. Physical as well as chemical properties of raw fish oil were studied and FFA's composition was analysed with GC-MS. Stable and high purity calcium oxide (CaO) was obtained when the material was calcined at 800 °C for 4 h...
February 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28230904/effects-of-re-heating-tissue-samples-to-core-body-temperature-on-high-velocity-ballistic-projectile-tissue-interactions
#9
Caitlin Humphrey, Maciej Henneberg, Christian Wachsberger, Nicholas Maiden, Jaliya Kumaratilake
Damage produced by high-speed projectiles on organic tissue will depend on the physical properties of the tissues. Conditioning organic tissue samples to human core body temperature (37°C) prior to conducting ballistic experiments enables their behavior to closely mimic that of living tissues. To minimize autolytic changes after death, the tissues are refrigerated soon after their removal from the body and re-heated to 37°C prior to testing. This research investigates whether heating 50-mm-cube samples of porcine liver, kidney, and heart to 37°C for varying durations (maximum 7 h) can affect the penetration response of a high-speed, steel sphere projectile...
February 23, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28230880/atomic-layer-deposited-ultrafine-mos2-nanocrystals-on-cobalt-foam-for-efficient-and-stable-electrochemical-oxygen-evolution
#10
Dehua Xiong, Qingqing Zhang, Wei Li, Junjie Li, Xiuli Fu, M F Cerqueira, Pedro Alpuim, Lifeng Liu
Ultrafine molybdenum sulfide (MoS2) nanocrystals are grown on a porous cobalt (Co) foam current collector by atomic layer deposition (ALD) using molybdenum hexacarbonyl and hydrogen sulfide as precursors. When used to catalyze the oxygen evolution reaction (OER), the optimal Co@MoS2 electrode, even with a MoS2 loading as small as 0.06 mg cm(-2), exhibits a large cathodic shift of ca. 200 mV in the onset potential (the potential at which the current density is 5 mA cm(-2)), a low overpotential of only 270 mV to attain an anodic current density of 10 mA cm(-2), much smaller charge transfer resistance and substantially improved long-term stability at both low and high current densities, with respect to the bare Co foam electrode, showing substantial promise for use as an efficient, low-cost and durable anode in water electrolyzers...
February 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28230785/the-application-of-a-modified-d-roms-test-for-measurement-of-oxidative-stress-and-oxidized-high-density-lipoprotein
#11
Fumiaki Ito, Tomoyuki Ito, Chinatsu Suzuki, Tomoyo Yahata, Kazuyuki Ikeda, Kenji Hamaoka
Reactive oxygen species (ROS) are involved in the initiation and progression of atherosclerosis. ROS-derived hydroperoxides, as an indicator of ROS production, have been measured by using the diacron reactive oxygen metabolites (d-ROMs) test, which requires iron-containing transferrin in the reaction mixture. In this study we developed a modified d-ROMs test, termed the Fe-ROMs test, where iron ions were exogenously added to the reaction mixture. This modification is expected to exclude the assay variation that comes from different blood iron levels in individuals...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28230784/the-effects-of-moderate-whole-grain-consumption-on-fasting-glucose-and-lipids-gastrointestinal-symptoms-and-microbiota
#12
Danielle N Cooper, Mary E Kable, Maria L Marco, Angela De Leon, Bret Rust, Julita E Baker, William Horn, Dustin Burnett, Nancy L Keim
This study was designed to determine if providing wheat, corn, and rice as whole (WG) or refined grains (RG) under free-living conditions will change parameters of health over a six-week intervention in healthy, habitual non-WG consumers. Measurements of body composition, fecal microbiota, fasting blood glucose, total cholesterol, high density lipoprotein (HDL), low density lipoprotein (LDL), and triglycerides were made at baseline and post intervention. Subjects were given adequate servings of either WG or RG products based on their caloric need and asked to keep records of grain consumption, bowel movements, and GI symptoms weekly...
February 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28230537/core-shell-znco2o4-tio2-nanowall-array-as-an-anode-for-li-ion-batteries
#13
Wei Shi, Haitao Zhao, Bingan Lu
In this paper, ZnCo2O4 nanowall arrays were firstly obtained through self-assembly followed by calcination. Then atomic layer deposition was used to fabricate core-shell ZnCo2O4@TiO2 nanowall arrays (NWAs) as anode materials for lithium ion batteries (LIBs). The hierarchical nanowall array nanostructure with fast ion diffusion and electron transport at electrode/electrolyte interface, while the shell of TiO2 with excellent chemical stability can protect the ZnCo2O4 nanowall arrays from volume expansion during charge and discharge processes...
February 23, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28230219/piezochromism-and-structural-and-electronic-properties-of-benz-a-anthracene-under-pressure
#14
Weizhao Cai, Rong Zhang, Yansun Yao, Shanti Deemyad
We report a combined experimental and theoretical study of the high pressure behavior of a herringbone-type hydrocarbon benz[a]anthracene (BaA) using fluorescence spectroscopy, X-ray diffraction, optical absorption, photoconductivity measurements, and first-principles density functional theory (DFT) calculations. The ambient-pressure molecular solid phase of BaA was found to be stable up to ∼15.0 GPa. Increasing the external pressure within this region would induce a reversible piezochromic colour change in the sample, from yellow-green to light brown...
February 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28230193/the-critical-role-of-point-defects-in-improving-the-specific-capacitance-of-%C3%AE-mno2-nanosheets
#15
Peng Gao, Peter Metz, Trevyn Hey, Yuxuan Gong, Dawei Liu, Doreen D Edwards, Jane Y Howe, Rong Huang, Scott T Misture
3D porous nanostructures built from 2D δ-MnO2 nanosheets are an environmentally friendly and industrially scalable class of supercapacitor electrode material. While both the electrochemistry and defects of this material have been studied, the role of defects in improving the energy storage density of these materials has not been addressed. In this work, δ-MnO2 nanosheet assemblies with 150 m(2) g(-1) specific surface area are prepared by exfoliation of crystalline KxMnO2 and subsequent reassembly. Equilibration at different pH introduces intentional Mn vacancies into the nanosheets, increasing pseudocapacitance to over 300 F g(-1), reducing charge transfer resistance as low as 3 Ω, and providing a 50% improvement in cycling stability...
February 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28230178/large-area-growth-of-multi-layer-hexagonal-boron-nitride-on-polished-cobalt-foils-by-plasma-assisted-molecular-beam-epitaxy
#16
Zhongguang Xu, Hao Tian, Alireza Khanaki, Renjing Zheng, Mohammad Suja, Jianlin Liu
Two-dimensional (2D) hexagonal boron nitride (h-BN), which has a similar honeycomb lattice structure to graphene, is promising as a dielectric material for a wide variety of potential applications based on 2D materials. Synthesis of high-quality, large-size and single-crystalline h-BN domains is of vital importance for fundamental research as well as practical applications. In this work, we report the growth of h-BN films on mechanically polished cobalt (Co) foils using plasma-assisted molecular beam epitaxy...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28230153/unconventional-high-performance-laser-protection-system-based-on-dichroic-dye-doped-cholesteric-liquid-crystals
#17
Wanshu Zhang, Lanying Zhang, Xiao Liang, Le Zhou, Jiumei Xiao, Li Yu, Fasheng Li, Hui Cao, Kexuan Li, Zhou Yang, Huai Yang
High-performance and cost-effective laser protection system is of crucial importance for the rapid advance of lasers in military and civilian fields leading to severe damages of human eyes and sensitive optical devices. However, it is crucially hindered by the angle-dependent protective effect and the complex preparation process. Here we demonstrate that angle-independence, good processibility, wavelength tunability, high optical density and good visibility can be effectuated simultaneously, by embedding dichroic anthraquinone dyes in a cholesteric liquid crystal matrix...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28230091/the-integration-of-color-selective-mechanisms-in-symmetry-detection
#18
Chia-Ching Wu, Chien-Chung Chen
We studied how the visual system detects multicolor symmetric patterns by manipulating the number of colors in an image in both isoluminance and luminance conditions. With a two-interval forced choice noise masking paradigm, we presented a noise mask in both intervals of each trial. A vertically symmetric target was randomly presented in one interval while a noise control was presented in the other. The task of the observers was to determine which interval contained the target. The target detection threshold was measured at various noise mask densities, which was found to decrease 1...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28230054/magnetization-switching-in-ferromagnets-by-adsorbed-chiral-molecules-without-current-or-external-magnetic-field
#19
Oren Ben Dor, Shira Yochelis, Anna Radko, Kiran Vankayala, Eyal Capua, Amir Capua, See-Hun Yang, Lech Tomasz Baczewski, Stuart Stephen Papworth Parkin, Ron Naaman, Yossi Paltiel
Ferromagnets are commonly magnetized by either external magnetic fields or spin polarized currents. The manipulation of magnetization by spin-current occurs through the spin-transfer-torque effect, which is applied, for example, in modern magnetoresistive random access memory. However, the current density required for the spin-transfer torque is of the order of 1 × 10(6) A·cm(-2), or about 1 × 10(25) electrons s(-1) cm(-2). This relatively high current density significantly affects the devices' structure and performance...
February 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28229954/nano-cone-resistive-memory-for-ultralow-power-operation
#20
Sungjun Kim, Sunghun Jung, Min-Hwi Kim, Tae-Hyeon Kim, Suhyung Bang, Seongjae Cho, Byung-Gook Park
SiN x -based nano-structure resistive memory is fabricated by fully silicon CMOS compatible process integration including particularly designed anisotropic etching for the construction of a nano-cone silicon bottom electrode (BE). Bipolar resistive switching characteristics have significantly reduced switching current and voltage and are demonstrated in a nano-cone BE structure, as compared with those in a flat BE one. We have verified by systematic device simulations that the main cause of reduction in the performance parameters is the high electric field being more effectively concentrated at the tip of the cone-shaped BE...
February 23, 2017: Nanotechnology
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