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https://www.readbyqxmd.com/read/28731348/proton-transport-in-hierarchical-structured-nafion-membranes-a-nmr-study
#1
Hengrui Yang, Jin Zhang, Jingliang Li, San Ping Jiang, Maria Forsyth, Haijin Zhu
It is known that hierarchical structure plays a key role in many unique material properties such as self-cleaning effect of lotus leaves and the anti-fogging property of the compound eyes of mosquitoes. This study reports a series of highly ordered meso-porous Nafion membranes with unique hierarchical structural features at the nanometre scale. Using NMR, we show for the first time that at low RH conditions, the proton in the ionic domains migrates via a surface diffusion mechanism and exhibits approximately two orders of magnitude faster transport than that in the nano-pores, whereas the nano-pores play a role of reservoir and maintain water and thereby conductivity at higher temperature and lower humidities...
July 21, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28729869/genetic-patterns-of-myrceugenia-correifolia-a-rare-species-of-fog-dependent-forests-of-mediterranean-chile-is-it-a-climatic-relict
#2
Fernanda Pérez, Luis F Hinojosa, Gioconda Peralta, Paz Montenegro, Carla Irarrázabal, Michel Cossio
Rare species frequently occur in areas with microclimatic conditions that are atypical for their regions, but that were more common in the past, and that probably have operated as climatic refugia for a long time. Myrceugenia correifolia is a rare arboreal species that grows in deep canyons and hilltops of the Coast Range of north-central Chile between 30° and 35°S. In the northern edge of its distribution M. correifolia grows in small patches of fog-dependent forest surrounding by xeric vegetation. These forest formations are thought to be remnants of an ancient and continuous rainforest that according to some authors became fragmented during aridization of the Neogene (Neogene relict) and to others during warm-dry cycles of the Pleistocene (glacial relicts)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28729652/a-genomic-glance-through-the-fog-of-plasticity-and-diversification-in-pocillopora
#3
Erika C Johnston, Zac H Forsman, Jean-François Flot, Sebastian Schmidt-Roach, Jorge H Pinzón, Ingrid S S Knapp, Robert J Toonen
Scleractinian corals of the genus Pocillopora (Lamarck, 1816) are notoriously difficult to identify morphologically with considerable debate on the degree to which phenotypic plasticity, introgressive hybridization and incomplete lineage sorting obscure well-defined taxonomic lineages. Here, we used RAD-seq to resolve the phylogenetic relationships among seven species of Pocillopora represented by 15 coral holobiont metagenomic libraries. We found strong concordance between the coral holobiont datasets, reads that mapped to the Pocillopora damicornis (Linnaeus, 1758) transcriptome, nearly complete mitochondrial genomes, 430 unlinked high-quality SNPs shared across all Pocillopora taxa, and a conspecificity matrix of the holobiont dataset...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28727438/a-wettability-metric-for-characterization-of-capillary-flow-on-textured-superhydrophilic-surfaces
#4
Taylor P Allred, Justin A Weibel, Suresh V Garimella
Surface wettability is typically characterized by measuring the static contact angle of a sessile droplet placed on the surface. For extremely wetting surfaces on which liquid spontaneously spreads into a thin liquid film, the near-zero static contact angle is not amenable to measurement and does not fully describe the wetting behavior. There are unmet needs in microfluidics, boiling heat transfer enhancement, and anti-fogging applications for a metric to characterize highly wetting (i.e., superhydrophilic) textured surfaces based on their capillary-driven liquid pumping performance, as a supplement to the contact angle for this highly wetting regime...
July 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28720555/readability-of-wikipedia-pages-on-autoimmune-disorders-systematic-quantitative-assessment
#5
Abdulla Watad, Nicola Luigi Bragazzi, Francesco Brigo, Kassem Sharif, Howard Amital, Dennis McGonagle, Yehuda Shoenfeld, Mohammad Adawi
BACKGROUND: In the era of new information and communication technologies, the Internet is being increasingly accessed for health-related information. Indeed, recently published patient surveys of people with autoimmune disorders confirmed that the Internet was reported as one of the most important health information sources. Wikipedia, a free online encyclopedia launched in 2001, is generally one of the most visited websites worldwide and is often consulted for health-related information...
July 18, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28719740/tuning-superhydrophobic-nanostructures-to-enhance-jumping-droplet-condensation
#6
Megan D Mulroe, Bernadeta R Srijanto, S Farzad Ahmadi, C Patrick Collier, Jonathan B Boreyko
It was recently discovered that condensation growing on a nanostructured superhydrophobic surface can spontaneously jump off the surface, triggered by naturally occurring coalescence events. Many reports have observed that droplets must grow to a size of order 10 μm before jumping is enabled upon coalescence; however, it remains unknown how the critical jumping size relates to the topography of the underlying nanostructure. Here, we characterize the dynamic behavior of condensation growing on six different superhydrophobic nanostructures, where the topography of the nanopillars was systematically varied...
July 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/28719187/exploring-the-role-of-habitat-on-the-wettability-of-cicada-wings
#7
Junho Oh, Catherine Dana, Sungmin Hong, Jessica K Roman, Kyoo D Jo, Je W Hong, Jonah Nguyen, Donald M Cropek, Marianne Alleyne, Nenad Miljkovic
Evolutionary pressure has pushed the wings of many insect species to develop micro/nanostructures that can significantly affect wettability and enable functionalities such as droplet jumping, self-cleaning, anti-fogging, anti-microbial, and anti-reflectivity. Significant effort is underway to understand the wing surface structure to establish rational design tools for the development of novel engineered materials. Most studies, however, have focused on superhydrophobic wings obtained from a single insect species, in particular, the Psaltoda claripennis cicada...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28719031/desert-beetle-inspired-superwettable-patterned-surfaces-for-water-harvesting
#8
Zhenwei Yu, Frank F Yun, Yanqin Wang, Li Yao, Shixue Dou, Kesong Liu, Lei Jiang, Xiaolin Wang
With the impacts of climate change and impending crisis of clean drinking water, designing functional materials for water harvesting from fog with large water capacity has received much attention in recent years. Nature has evolved different strategies for surviving dry, arid, and xeric conditions. Nature is a school for human beings. In this contribution, inspired by the Stenocara beetle, superhydrophilic/superhydrophobic patterned surfaces are fabricated on the silica poly(dimethylsiloxane) (PDMS)-coated superhydrophobic surfaces using a pulsed laser deposition approach with masks...
July 18, 2017: Small
https://www.readbyqxmd.com/read/28715857/difference-in-growth-and-coalescing-patterns-of-droplets-on-bi-philic-surfaces-with-varying-spatial-distribution
#9
Martand Mayukh Garimella, Sudheer Koppu, Shantanu Shrikant Kadlaskar, Venkata Pillutla, Abhijeet, Wonjae Choi
This paper reports the condensation and subsequent motion of water droplets on bi-philic surfaces, surfaces that are patterned with regions of different wettability. Bi-philic surfaces can enhance the water collection efficiency: droplets condensing on hydrophobic regions wick into hydrophilic drain channels when droplets grow to a certain size, renewing the condensation on the dry hydrophobic region. The onset of drain phenomenon can be triggered by multiple events with distinct nature ranging from gravity, direct contact between a droplet and a drain channel, to a mutual coalescence between droplets...
June 30, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28709378/forced-spreading-of-aqueous-solutions-on-zwitterionic-sulfobetaine-surfaces-for-rapid-evaporation-and-solute-separation
#10
Cyuan-Jhang Wu, Vickramjeet Singh, Yu-Jane Sheng, Heng-Kwong Tsao
Solute separation of aqueous mixtures is mainly dominated by water vaporization. The evaporation rate of an aqueous drop grows with increasing the liquid-gas interfacial area. The spontaneous spreading behavior of a water droplet on a total wetting surface provides huge liquid-gas interfacial area per unit volume, however it is halted by the self-pinning phenomenon upon addition of nonvolatile solutes. In this work, it is shown that the solute-induced self-pinning can be overcome by gravity, leading to anisotropic spreading much faster than isotropic spreading...
July 14, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28708615/treatment-of-poultry-slaughterhouse-wastewater-using-a-static-granular-bed-reactor-sgbr-coupled-with-ultrafiltration-uf-membrane-system
#11
M Basitere, Z Rinquest, M Njoya, M S Sheldon, S K O Ntwampe
The South African poultry industry has grown exponentially in recent years due to an increased demand for their products. As a result, poultry plants consume large volumes of high quality water to ensure that hygienically safe poultry products are produced. Furthermore, poultry industries generate high strength wastewater, which can be treated successfully at low cost using anaerobic digesters. In this study, the performance of a bench-scale mesophilic static granular bed reactor (SGBR) containing fully anaerobic granules coupled with an ultrafiltration (UF) membrane system, as a post-treatment system, was investigated...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28698150/freezing-of-gait-is-associated-with-cognitive-impairment-in-patients-with-parkinson-disease
#12
Zhiwen Yao, Yuan Shao, Xiang Han
OBJECTIVE: To explore whether the cognitive impairment is correlated with freezing of gait (FOG) in patients with Parkinson disease (PD). METHODS: A total of 186 patients with Parkinson disease (104 patients with FOG and 82 patients with no clinical history of freezing behavior) and 125 healthy individuals were selected for this study. Neuropsychological assessments, including the scales for outcomes in Parkinson disease cognition, unified Parkinson's disease rating scale, and Hamilton depression/anxiety rating scale etc...
July 8, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28696395/a-fine-grained-and-privacy-preserving-query-scheme-for-fog-computing-enhanced-location-based-service
#13
Xue Yang, Fan Yin, Xiaohu Tang
Location-based services (LBS), as one of the most popular location-awareness applications, has been further developed to achieve low-latency with the assistance of fog computing. However, privacy issues remain a research challenge in the context of fog computing. Therefore, in this paper, we present a fine-grained and privacy-preserving query scheme for fog computing-enhanced location-based services, hereafter referred to as FGPQ. In particular, mobile users can obtain the fine-grained searching result satisfying not only the given spatial range but also the searching content...
July 11, 2017: Sensors
https://www.readbyqxmd.com/read/28694198/survival-with-smog-and-smoke-precision-intervention
#14
Hua Linda Cai, Chen Wang
Despite continuous efforts of regional government agencies, air pollution remains a major threat to public health worldwide. In the January of 2017, a severe episode of smog similar to the London Fog in 1952, appeared in London. A longest episode of Chinese Haze also developed in Beijing, during which the PM2.5 (particular matter sized less than 2.5 micrometers) levels rose up to 500 μg/m(3). The European smog and the Chinese Haze are associated with large numbers of premature deaths each year, at 400,000 and 1...
July 7, 2017: Chest
https://www.readbyqxmd.com/read/28689591/neurologic-manifestations-of-hepatitis-c-virus-infection
#15
REVIEW
Sentia Iriana, Michael P Curry, Nezam H Afdhal
The extrahepatic manifestations of hepatitis C include effects on the central nervous system, which have been associated with the ability of hepatitis C virus (HCV) to replicate in microglial and endothelial cells and the chronic inflammation induced by HCV. HCV can induce impaired neurocognition, which is clinically manifested by impaired quality of life, fatigue, and brain fog. These cognitive defects can be present even in patients with mild histologic HCV and have been confirmed by neurocognitive testing and brain imaging by magnetic resonance spectroscopy...
August 2017: Clinics in Liver Disease
https://www.readbyqxmd.com/read/28673611/effects-of-curved-walking-training-on-curved-walking-performance-and-freezing-of-gait-in-individuals-with-parkinson-s-disease-a-randomized-controlled-trial
#16
Fang-Yu Cheng, Yea-Ru Yang, Yih-Ru Wu, Shih-Jung Cheng, Ray-Yau Wang
INTRODUCTION: The purpose of this study was to investigate the effects of curved-walking training (CWT) on curved-walking performance and freezing of gait (FOG) in people with Parkinson's disease (PD). METHODS: Twenty-four PD subjects were recruited and randomly assigned to the CWT group or control exercise (CE) group and received 12 sessions of either CWT with a turning-based treadmill or general exercise training for 30 min followed by 10 min of over-ground walking in each session for 4-6 weeks...
June 28, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28672212/elucidating-microbial-community-adaptation-to-anaerobic-co-digestion-of-fats-oils-and-grease-and-food-waste
#17
Yamrot M Amha, Pooja Sinha, Jewls Lagman, Matt Gregori, Adam L Smith
Despite growing interest in co-digestion and demonstrated process improvements (e.g., enhanced stability and biogas production), few studies have evaluated how co-digestion impacts the anaerobic digestion (AD) microbiome. Three sequential bench-scale respirometry experiments were conducted at thermophilic temperature (50 °C) with various combinations of primary sludge (PS); thickened waste activated sludge (TWAS); fats, oils, and grease (FOG); and food waste (FW). Two additional runs were then performed to evaluate microbial inhibition at higher organic fractions of FOG (30-60% volatile solids loading (VSL; v/v))...
June 23, 2017: Water Research
https://www.readbyqxmd.com/read/28672174/characterization-of-small-spored-alternaria-from-argentinean-crops-through-a-polyphasic-approach
#18
Lucía da Cruz Cabral, Marcela Rodriguero, Sebastián Stenglein, Kristian Fog Nielsen, Andrea Patriarca
Small-spored Alternaria have been isolated from a wide variety of food crops, causing both economic losses and human health risk due to the metabolites produced. Their taxonomy has been discussed widely, but no scientific consensus has been established in this field to date. Argentina is a major exporter of agricultural products, so it is essential to thoroughly understand the physiological behaviour of this pathogen in a food safety context. Thus, the objective of this work was to characterize small-spored Alternaria spp...
June 27, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28668630/evaluation-of-physical-and-chemical-properties-and-their-interactions-in-fat-oil-and-grease-fog-deposits
#19
Martin A Gross, Jeanette L Jensen, Hanna S Gracz, Jens Dancer, Kevin M Keener
Fat, oil and grease (FOG) blockages in sewer systems are a substantial problem in the United States. It has been estimated that over 50% of sewer overflows are a result of FOG blockages. In this work, a thorough laboratory study was undertaken to examine key variables that contribute to FOG deposit formation under controlled conditions. Physical and chemical properties and their interactions were evaluated and conditions that generated deposits that mimicked field FOG deposits were identified. It was found that 96 of the of 128 reaction conditions tested in the laboratory formed FOG deposits with similar physical and chemical characteristics as field FOG deposits...
June 26, 2017: Water Research
https://www.readbyqxmd.com/read/28662609/rapid-degradation-of-fog-discharged-from-food-industry-wastewater-by-lipolytic-fungi-as-a-bioaugmentation-application
#20
Ayoma Witharana, Jagath Manatunge, Niranjanie Ratnayake, Chandrika M Nanayakkara, Mahesh Jayaweera
Fats, oils and grease (FOG) congregate in grease trap devices as a result of culinary activities in the food service industry. FOG is considered to be a slowly biodegradable particulate organic matter and may require enzymatic or hydrolytic conversion to form readily biodegradable soluble organic matter. The existing treatment methods are claimed on water based hydrolysis of FOG to form long chain fatty acids. The long fatty acids discharged into wastewater treatment system create functional difficulties, especially the inhibitory effect caused by accumulation of long chain fatty acids...
June 30, 2017: Environmental Technology
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