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https://www.readbyqxmd.com/read/28731318/ultrafast-ionic-liquid-assisted-microwave-synthesis-of-sno-microflowers-and-their-superior-sodium-ion-storage-performance
#1
Bingsheng Qin, Huang Zhang, Thomas Diemant, Dorin Geiger, Rinaldo Raccichini, R Jürgen Behm, Ute Kaiser, Alberto Varzi, Stefano Passerini
Tin oxide (SnO) is considered one of the most promising metal oxides for utilization as anode material in sodium ion batteries (SIBs), due to its ease of synthesis, high specific gravimetric capacity and satisfactory cycling performance. However, to aim at practical applications, the coulombic efficiency during cycling needs to be further improved, which requires a deeper knowledge of its working mechanism. Here, a microflower-shaped SnO material is synthesized by means of an ultrafast ionic liquid-assisted microwave method...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28731101/selective-molecular-annealing-in-situ-small-angle-x-ray-scattering-study-of-microwave-assisted-annealing-of-block-copolymers
#2
Daniel T W Toolan, Kevin Adlington, Anna Isakova, Alexis Kalamiotis, Parvaneh Mokarian-Tabari, Georgios Dimitrakis, Christopher Dodds, Thomas Arnold, Nick J Terrill, Wim Bras, Daniel Hermida Merino, Paul D Topham, Derek J Irvine, Jonathan R Howse
Microwave annealing has emerged as an alternative to traditional thermal annealing approaches for optimising block copolymer self-assembly. A novel sample environment enabling small angle X-ray scattering to be performed in situ during microwave annealing is demonstrated, which has enabled, for the first time, the direct study of the effects of microwave annealing upon the self-assembly behavior of a model, commercial triblock copolymer system [polystyrene-block-poly(ethylene-co-butylene)-block-polystyrene]...
July 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28727759/use-of-a-microfluidic-platform-to-uncover-basic-features-of-energy-and-environmental-stress-responses-in-individual-cells-of-bacillus-subtilis
#3
Matthew T Cabeen, Jonathan R Russell, Johan Paulsson, Richard Losick
Bacteria use a variety of stress-sensing systems to sense and respond to diverse stressors and to ensure their survival under adverse conditions. The gram-positive bacterium Bacillus subtilis responds to energy stress (ATP depletion) and to environmental stressors using two distinct stress-sensing pathways that converge on the alternative sigma factor σB to provoke a general stress response. Past efforts to study the σB stress response in bulk culture and on agarose pads were unable to visualize the responses of individual cells under tightly controlled conditions for extended periods of time...
July 20, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28727440/sensitization-of-nanocrystalline-metal-oxides-with-a-phosphonate-functionalized-perylene-diimide-for-photoelectrochemical-water-oxidation-with-a-coo%C3%A2-catalyst
#4
Joel Thomas Kirner, Richard G Finke
A planar organic thin-film composed of a perylene diimide dye (N,N´-bis(phosphonomethyl)-3,4,9,10-perylenediimide, PMPDI) with photoelectrochemically deposited cobalt oxide (CoOx) catalyst was previously shown to photoelectrochemically oxidize water (DOI: 10.1021/am405598w). Herein, the same PMPDI dye is studied for the sensitization of different nanostructured metal oxide (nano-MOₓ) films in a dye-sensitized photoelectrochemical cell architecture. Dye adsorption kinetics and saturation decreases in the order TiO₂ > SnO₂ > WO₃...
July 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28726767/fat-taste-sensitivity-is-associated-with-short-term-and-habitual-fat-intake
#5
Andrew Costanzo, Liliana Orellana, Caryl Nowson, Konsta Duesing, Russell Keast
Evidence suggests individuals less sensitive to fat taste (high fat taste thresholds (FTT)) may be overweight or obese and consume greater amounts of dietary fat than more sensitive individuals. The aims of this study were to assess associations between FTT, anthropometric measurements, fat intake, and liking of fatty foods. FTT was assessed in 69 Australian females (mean age 41.3 (15.6) (SD) years and mean body mass index 26.3 (5.7) kg/m²) by a 3-alternate forced choice methodology and transformed to an ordinal scale (FT rank)...
July 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28726561/characteristics-of-the-microwave-pyrolysis-and-microwave-co2-assisted-gasification-of-a-dewatered-sewage-sludge
#6
Young Nam Chun, Byeo Ri Jeong
Microwave drying-pyrolysis or drying-gasification characteristics was examined to convert sewage sludge into energy and resources. The gasification was carried out with carbon dioxide as a gasifying agent. The examination results were compared with those of the conventional heating-type electric furnace to compare both product characteristics. Through the pyrolysis or gasification, gas, tar and char were generated as products. The produced gas was the largest component of each process followed by the sludge char and the tar...
July 20, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28725483/engineering-glucose-metabolism-of-escherichia-coli-under-nitrogen-starvation
#7
Victor Chubukov, John James Desmarais, George Wang, Leanne Jade G Chan, Edward Ek Baidoo, Christopher J Petzold, Jay D Keasling, Aindrila Mukhopadhyay
A major aspect of microbial metabolic engineering is the development of chassis hosts that have favorable global metabolic phenotypes, and can be further engineered to produce a variety of compounds. In this work, we focus on the problem of decoupling growth and production in the model bacterium Escherichia coli, and in particular on the maintenance of active metabolism during nitrogen-limited stationary phase. We find that by overexpressing the enzyme PtsI, a component of the glucose uptake system that is inhibited by α-ketoglutarate during nitrogen limitation, we are able to achieve a fourfold increase in metabolic rates...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28725450/various-levels-of-copra-meal-supplementation-with-%C3%AE-mannanase-on-growth-performance-blood-profile-nutrient-digestibility-pork-quality-and-economical-analysis-in-growing-finishing-pigs
#8
H J Kim, S O Nam, J H Jeong, L H Fang, H B Yoo, S H Yoo, J S Hong, S W Son, S H Ha, Y Y Kim
BACKGROUND: To reduce use of main feed ingredient like corn, soy bean meal (SBM) and wheat, alternative ingredients has been studied like copra meal (CM). Production amount of CM which has been high makes CM to be an alternative feed stuff. However, low digestibility on AA and low energy content by high fiber content can be an obstacle for using CM. This experiment was conducted to evaluate the effects of CM supplementation with β-mannanase on growth performance, blood profile, nutrient digestibility, pork quality and economic analysis in growing-finishing pigs...
2017: Journal of Animal Science and Technology
https://www.readbyqxmd.com/read/28725402/what-does-body-size-mean-from-the-plant-s-eye-view
#9
Amanda J Tracey, Kimberly A Stephens, Brandon S Schamp, Lonnie W Aarssen
Alternative metrics exist for representing variation in plant body size, but the vast majority of previous research for herbaceous plants has focused on dry mass. Dry mass provides a reasonably accurate and easily measured estimate for comparing relative capacity to convert solar energy into stored carbon. However, from a "plant's eye view", its experience of its local biotic environment of immediate neighbors (especially when crowded) may be more accurately represented by measures of "space occupancy" (S-O) recorded in situ-rather than dry mass measured after storage in a drying oven...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725389/quality-versus-quantity-foraging-decisions-in-the-honeybee-apis-mellifera-scutellata-feeding-on-wildflower-nectar-and-fruit-juice
#10
Kyle Shackleton, Nicholas J Balfour, Hasan Al Toufailia, Roberto Gaioski, Marcela de Matos Barbosa, Carina A de S Silva, José M S Bento, Denise A Alves, Francis L W Ratnieks
Foraging animals must often decide among resources which vary in quality and quantity. Nectar is a resource that exists along a continuum of quality in terms of sugar concentration and is the primary energy source for bees. Alternative sugar sources exist, including fruit juice, which generally has lower energetic value than nectar. We observed many honeybees (Apis mellifera scutellata) foraging on juice from fallen guava (Psidium guajava) fruit near others foraging on nectar. To investigate whether fruit and nectar offered contrasting benefits of quality and quantity, we compared honeybee foraging performance on P...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725334/bloch-surface-wave-coupled-emission-at-ultra-violet-wavelengths
#11
Ramachandram Badugu, Jieying Mao, Steve Blair, Douguo Zhang, Emiliano Descrovi, Angelo Angelini, Yiping Huo, Joseph R Lakowicz
The interaction of fluorophores with nearby metallic structures is now an active area of research. Dielectric photonic structures offer some advantages over plasmonic structures, namely small energy losses and less quenching. We describe a dielectric one-dimensional photonic crystal (1DPC), which supports Bloch surface waves (BSWs) from 280 to 440 nm. This BSW structure is a quartz slide coated with alternating layers of SiO2 and Si3N4. We show that this structure displays BSWs and that the near-UV fluorophore, 2-aminopurine (2-AP), on the top surface of the structure couples with the BSWs...
December 22, 2016: Journal of Physical Chemistry. C, Nanomaterials and Interfaces
https://www.readbyqxmd.com/read/28725265/two-bifunctional-enzymes-from-the-marine-protist-thraustochytrium-roseum-biochemical-characterization-of-wax-ester-synthase-acyl-coa-diacylglycerol-acyltransferase-activity-catalyzing-wax-ester-and-triacylglycerol-synthesis
#12
Nannan Zhang, Zejing Mao, Ling Luo, Xia Wan, Fenghong Huang, Yangmin Gong
BACKGROUND: Triacylglycerols (TAGs) and wax esters (WEs) are important neutral lipids which serve as energy reservoir in some plants and microorganisms. In recent years, these biologically produced neutral lipids have been regarded as potential alternative energy sources for biofuel production because of the increased interest on developing renewable and environmentally benign alternatives for fossil fuels. In bacteria, the final step in TAG and WE biosynthetic pathway is catalyzed by wax ester synthase/acyl coenzyme A (acyl-CoA):diacylglycerol acyltransferase (WS/DGAT)...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28723960/a-validation-of-11-body-condition-indices-in-a-giant-snake-species-that-exhibits-positive-allometry
#13
Bryan G Falk, Ray W Snow, Robert N Reed
Body condition is a gauge of the energy stores of an animal, and though it has important implications for fitness, survival, competition, and disease, it is difficult to measure directly. Instead, body condition is frequently estimated as a body condition index (BCI) using length and mass measurements. A desirable BCI should accurately reflect true body condition and be unbiased with respect to size (i.e., mean BCI estimates should not change across different length or mass ranges), and choosing the most-appropriate BCI is not straightforward...
2017: PloS One
https://www.readbyqxmd.com/read/28723937/electricity-system-based-on-100-renewable-energy-for-india-and-saarc
#14
Ashish Gulagi, Piyush Choudhary, Dmitrii Bogdanov, Christian Breyer
The developing region of SAARC (South Asian Association for Regional Cooperation) is home to a large number of people living below the poverty line. In future, providing affordable, universally accessible, reliable, low to zero carbon electricity in this region will be the main aim. A cost optimal 100% renewable energy system is simulated for SAARC for the year 2030 on an hourly resolved basis. The region was divided into 16 sub-regions and three different scenarios were set up based on the level of high voltage direct current (HVDC) grid connections...
2017: PloS One
https://www.readbyqxmd.com/read/28722751/graded-replacement-of-maize-grain-with-molassed-sugar-beet-pulp-modulated-ruminal-microbial-community-and-fermentation-profile-in-vitro
#15
Matthias Münnich, Annabella Khol-Parisini, Fenja Klevenhusen, Barbara Metzler-Zebeli, Qendrim Zebeli
BACKGROUND: Molassed sugar beet pulp (Bp) is a viable alternative to grains in cattle nutrition for reducing human edible energy input. Yet, little is known about the effects of high inclusion rates of Bp on rumen microbiota. This study used an in vitro approach and the qPCR technique to establish the effects of a graded replacement of maize grain (MG) by Bp on the ruminal microbial community, fermentation profile, and nutrient degradation. RESULTS: Six different amounts of Bp (0 to 400 g kg(-1) ) which replaced MG in the diet were tested, using the in vitro semi continuous rumen simulation technique...
July 19, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28722407/quantum-chemical-study-of-ch3-o2-combustion-reaction-system-catalytic-effects-of-additional-co2-molecule
#16
Artëm E Masunov, Elizabeth Wait, Subith S Vasu
The supercritical carbon dioxide diluent is used to control the temperature and to increase the efficiency in oxycombustion fossil fuel energy technology. It may affect the rates of combustion by altering mechanisms of chemical reactions, compared to the ones at low CO2 concentrations. Here, we investigate potential energy surfaces of the four elementary reactions in the CH3 + O2 reactive system in the presence of one CO2 molecule. In the case of reaction CH3 + O2 → CH2O + OH (R1 channel), van der Waals (vdW) complex formation stabilizes the transition state and reduces the activation barrier by ∼2...
July 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28719833/in-silico-search-of-inhibitors-of-streptococcus-mutans-for-the-control-of-dental-plaque
#17
Rodrigo Ochoa, María Cecilia Martínez-Pabón, María Adelaida Arismendi-Echeverri, Willer Leandro Rendón-Osorio, Carlos Enrique Muskus-López
Biofilm is an extremely complex microbial community arranged in a matrix of polysaccharides and attached to a substrate. Its development is crucial in the pathophysiology of oral infections like dental caries, as well as in periodontal, pulp, and periapical diseases. Streptococcus mutans is one of the most effective microorganisms in lactic acid production of the dental biofilm. Identifying essential Streptococcus mutans proteins using bioinformatics methods helps to search for alternative therapies. To this end, the bacterial genomes of several Streptococcus mutans strains and representative strains of other cariogenic and non-cariogenic bacteria were analysed by identifying pathogenicity islands and alignments with other bacteria, and by detecting the exclusive genes of cariogenic species in comparison to the non-pathogenic ones...
July 1, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28719616/analytical-network-process-based-optimum-cluster-head-selection-in-wireless-sensor-network
#18
Haleem Farman, Huma Javed, Bilal Jan, Jamil Ahmad, Shaukat Ali, Falak Naz Khalil, Murad Khan
Wireless Sensor Networks (WSNs) are becoming ubiquitous in everyday life due to their applications in weather forecasting, surveillance, implantable sensors for health monitoring and other plethora of applications. WSN is equipped with hundreds and thousands of small sensor nodes. As the size of a sensor node decreases, critical issues such as limited energy, computation time and limited memory become even more highlighted. In such a case, network lifetime mainly depends on efficient use of available resources...
2017: PloS One
https://www.readbyqxmd.com/read/28719138/chevrel-phase-mo6-t8-t-s-se-as-electrodes-for-advanced-energy-storage
#19
REVIEW
Lin Mei, Jiantie Xu, Zengxi Wei, Huakun Liu, Yutao Li, Jianmin Ma, Shixue Dou
With the large-scale applications of electric vehicles in recent years, future batteries are required to be higher in power and possess higher energy densities, be more environmental friendly, and have longer cycling life, lower cost, and greater safety than current batteries. Therefore, to develop alternative electrode materials for advanced batteries is an important research direction. Recently, the Chevrel phase Mo6 T8 (T = S, Se) has attracted increasing attention as electrode candidate for advanced batteries, including monovalent (e...
July 18, 2017: Small
https://www.readbyqxmd.com/read/28719095/a-new-perspective-on-transparent-wood-lignin-retaining-transparent-wood
#20
Yuanyuan Li, Qiliang Fu, Ramiro Rojas, Min Yan, Martin Lawoko, Lars Berglund
Optically transparent wood, combining optical and mechanical performance, is an emerging new material for light transmitting structures in buildings with the aim of reducing energy consumption. One of the main obstacles for transparent wood fabrication is delignification, where around 30 wt% of wood tissue is removed to reduce light absorption and refractive index mismatch. This step is time consuming and not environmentally benign. Meanwhile, lignin removal weakens the wood structure, limiting the fabrication of large structure...
July 18, 2017: ChemSusChem
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