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https://www.readbyqxmd.com/read/28645128/-headache-news
#1
Hans-Christoph Diener, Charly Gaul, Dagny Holle-Lee, Lazaros Lazaridis, Steffen Nägel, Mark Obermann
A review of the latest and most relevant information on different disorders of head and facial pain is presented. News from epidemiologic studies regarding the relationship between migraine and patent foramen ovale, the cardiovascular risk in migraine, and migraine behavior during menopause, and the development of white matter lesions or migraine genetics are presented. Regarding pathophysiology there are very recent insights regarding the role of the hypothalamus during prodromal phase and the interplay of brain-stem and hypothalamus during the attack...
June 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28636316/a-novel-melamine-o-phthalaldehyde-covalent-organic-frameworks-nanaosheets-enhancement-flame-retardant-and-mechanical-performances-of-thermoplastic-polyurethanes
#2
Xiaowei Mu, Jing Zhan, Xiaming Feng, Bihe Yuan, Shuilai Qiu, Lei Song, Yuan Hu
Covalent organic frameworks (COFs) nanosheets prepared from condensation reaction between melamine and o-phthalaldehyde are firstly prepared through ball milling and then incorporated into thermoplastic polyurethanes (TPU) by solution mixing. Transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectrometer are applied to characterize COFs nanosheets. It is observed apparently from TEM image that COFs nanosheets are obtained...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28633911/fate-of-metals-and-emissions-of-organic-pollutants-from-torrefaction-of-waste-wood-msw-and-rdf
#3
Mar Edo, Nils Skoglund, Qiuju Gao, Per-Erik Persson, Stina Jansson
Torrefaction of municipal solid waste (MSW), refuse-derived fuel (RDF), and demolition and construction wood (DC) was performed at 220°C and a residence time of 90min in a bench-scale reactor. The levels of toxic polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) contained in emission from the torrefaction process were evaluated. In addition, main ash-forming elements and trace metals in the raw feedstock and char were determined. The use of MSW in fuel blends with DC resulted in lower PCDD and PCDF emissions after torrefaction, compared with the RDF blends...
June 17, 2017: Waste Management
https://www.readbyqxmd.com/read/28629107/reducing-the-bioavailability-and-leaching-potential-of-lead-in-contaminated-water-hyacinth-biomass-by-phosphate-assisted-pyrolysis
#4
Lingna Shi, Lijun Wang, Tao Zhang, Jianfa Li, Xiaoyi Huang, Jing Cai, Jinhong Lü, Yue Wang
For the purpose of safe disposal of biomass contaminated by biosorption of heavy metals, phosphate-assisted pyrolysis of water hyacinth biomass contaminated by lead (Pb) was tried to reduce the bioavailability and leaching potential of Pb, using direct pyrolysis without additive as a control method. Direct pyrolysis of the contaminated biomass at low temperatures (300 and 400°C) could reduce the bioavailability of Pb, but the leaching potential of Pb was increased with the rising pyrolysis temperature. While phosphate-assisted pyrolysis significantly enhanced the recovery and stability of Pb in the char...
June 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28624325/treat-and-extend-therapy-using-aflibercept-for-neovascular-age-related-macular-degeneration-a-prospective-clinical-trial
#5
Francis Char DeCroos, David Reed, Murtaza K Adam, David Salz, Omesh P Gupta, Allen C Ho, Carl D Regillo
PURPOSE: To determine the efficacy and durability of aflibercept utilized in a treat and extend (TAE) regimen for neovascular age-related macular degeneration (NVAMD). DESIGN: Multicenter, prospective, open label, non-comparative, interventional study METHODS: Forty eyes of 40 patients with treatment-naïve NVAMD were managed with a TAE regimen of intravitreal aflibercept. The main endpoints were the change in mean and median best-corrected visual acuity from baseline at years 1 and 2...
June 14, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28623023/pyrolysis-reaction-models-of-waste-tires-application-of-master-plots-method-for-energy-conversion-via-devolatilization
#6
Dilan Irmak Aslan, Prakash Parthasarathy, Jillian L Goldfarb, Selim Ceylan
Land applied disposal of waste tires has far-reaching environmental, economic, and human health consequences. Pyrolysis represents a potential waste management solution, whereby the solid carbonaceous residue is heated in the absence of oxygen to produce liquid and gaseous fuels, and a solid char. The design of an efficient conversion unit requires information on the reaction kinetics of pyrolysis. This work is the first to probe the appropriate reaction model of waste tire pyrolysis. The average activation energy of pyrolysis was determined via iso-conversional methods over a mass fraction conversion range between 0...
June 13, 2017: Waste Management
https://www.readbyqxmd.com/read/28618221/constructing-3d-polyphosphazene-nanotube-mesoporous-silica-bimetallic-phosphide-ternary-nanostructures-via-layer-by-layer-method-synthesis-and-applications
#7
Shuilai Qiu, Yongqian Shi, Bibo Wang, Xia Zhou, Junling Wang, Chengming Wang, Chandra Sekhar Reddy Gangireddy, Richard K K Yuen, Yuan Hu
A novel ternary nanostructure polyphosphazene nanotube (PZS)@ mesoporous silica (M-SiO2)@bimetallic phosphide (CoCuP) was facilely fabricated, using PZS as the template, where large amount of cetyltrimethyl ammonium bromide molecules were anchored to PZS via a similar layer-by-layer assembly strategy, and then uniform M-SiO2 shells can be formed successfully by Hyeon's coating method. Subsequently, the three-dimensional (3D) nanostructure on the basis of bimetallic phosphide (CoCuP) interconnected with PZS@M-SiO2 was synthesized via a convenient, mild hydrothermal route...
June 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28617197/chronic-early-life-stress-induced-by-limited-bedding-and-nesting-lbn-material-in-rodents-critical-considerations-of-methodology-outcomes-and-translational-potential
#8
Claire-Dominique Walker, Kevin G Bath, Marian Joels, Aniko Korosi, Muriel Larauche, Paul J Lucassen, Margaret J Morris, Charlis Raineki, Tania L Roth, Regina M Sullivan, Yvette Taché, Tallie Z Baram
The immediate and long term effects of exposure to early life stress (ELS) have been documented in humans and animal models. Even relatively brief periods of stress during the first 10 days of life in rodents can impact later behavioral regulation and the vulnerability to develop adult pathologies, in particular an impairment of cognitive functions and neurogenesis, but also modified social, emotional and conditioned fear responses. The development of preclinical models of ELS exposure allows the examination of mechanisms and testing of therapeutic approaches that are not possible in humans...
June 15, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28616198/seed-dispersal-of-diospyros-virginiana-in-the-past-and-the-present-evidence-for-a-generalist-evolutionary-strategy
#9
Mimi Rebein, Charli N Davis, Helena Abad, Taylor Stone, Jillian Del Sol, Natalie Skinner, Matthew D Moran
Several North American trees are hypothesized to have lost their co-evolved seed disperser during the late-Pleistocene extinction and are therefore considered anachronistic. We tested this hypothesis for the American persimmon (Diospyros virginiana) by studying the effects of gut passage of proposed seed dispersers on seedling survival and growth, natural fruiting characteristics, and modern animal consumption patterns. We tested gut passage effects on persimmon seeds using three native living species, the raccoon (Procyon lotor), Virginia opossum (Didelphis virginiana), and coyote (Canis latrans), and two Pleistocene analogs; the Asian elephant (Elephas maximus) and alpaca (Vicugna pacos)...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28606535/durable-flame-retardant-finishing-of-cotton-fabrics-with-halogen-free-organophosphonate-by-uv-photoinitiated-thiol-ene-click-chemistry
#10
Lijin Xu, Wei Wang, Dan Yu
Cotton fabrics are treated with a synthetic non-halogenated organophosphorus flame retardant by UV photoinitiated thiol-ene click chemistry. Thiol reactive precursors on cotton surface were prepared by 3-Mercaptopropyltriethoxysilane. The flame retardant property has been tested with different concentrations of flame retardant treatment (i.e., wt 2%, 5%, and 8%) by limited oxygen index (LOI) and vertical burning tests and maintained after 30 washing cycles, which was improved with concentration increases. Thermogravimetric analysis showed that the treatment greatly enhanced the char forming ability of cellulose and the highest residue was left as much as 48...
September 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28603758/preparation-and-catalytic-activity-of-bone-char-ash-decorated-with-mgo-feno3-for-ozonation-of-reactive-black-5-dye-from-aqueous-solution-taguchi-optimization-data
#11
Ghorban Asgari, Somaye Akbari, Abdol Motaleb Seid Mohammadi, Ali Poormohammadi, Bahman Ramavandi
Reactive dye is one of the most applicable dyes in textile industries which its release to the water bodies creates a concern for environmentalists. Here, in this data article a bone-char (BC) ash decorated with MgO-FeNO3 for removing reactive black 5 (RB5) dye in a catalytic ozonation process (COP) system. Operational parameters data such as initial RB5 concentration, pH, catalyst dosage, and reaction time were optimized using Taguchi method. The optimal conditions for initial RB5 concentration, pH, catalyst dosage, and reaction time were determined 10 mg/L, 10, 0...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28601774/pyrolysis-of-oil-palm-mesocarp-fiber-and-palm-frond-in-a-slow-heating-fixed-bed-reactor-a-comparative-study
#12
G Kabir, A T Mohd Din, B H Hameed
Oil palm mesocarp fiber (OPMF) and palm frond (PF) were respectively devolatilized by pyrolysis to OPMF-oil and PF-oil bio-oils and biochars, OPMF-char and PF-char in a slow-heating fixed-bed reactor. In particular, the OPMF-oil and PF-oil were produced to a maximum yield of 48wt% and 47wt% bio-oils at 550°C and 600°C, respectively. The high heating values (HHVs) of OPMF-oil and PF-oil were respectively found to be 23MJ/kg and 21MJ/kg, whereas 24.84MJ/kg and 24.15MJ/kg were for the corresponding biochar. The HHVs of the bio-oils and biochars are associated with low O/C ratios to be higher than those of the corresponding biomass...
June 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28601579/screw-pyrolysis-technology-for-sewage-sludge-treatment
#13
Marco Tomasi Morgano, Hans Leibold, Frank Richter, Dieter Stapf, Helmut Seifert
Sewage sludge quantities have grown continuously since the introduction of the European Directive (UWWTD 91/271/EEC) relating to the treatment of urban wastewater. In the present, most of the sewage sludge is combusted in single fuels incineration plants or is co-fired in waste incineration or coal power plants. The combustion of sewage sludge is a proven technology. Other treatments, such as fluidized bed gasification, were successfully adopted to produce suitable syngas for power production. Besides, the number of large wastewater treatment plants is relatively small compared to the local rural ones...
June 7, 2017: Waste Management
https://www.readbyqxmd.com/read/28599368/burn-effects-on-soil-properties-associated-to-heat-transfer-under-contrasting-moisture-content
#14
David Badía, Sergio López-García, Clara Martí, Oriol Ortíz-Perpiñá, Antonio Girona-García, José Casanova-Gascón
The aim of this work is to investigate the topsoil thickness affected by burning under contrasting soil moisture content (field capacity versus air-dried conditions). A mollic horizon of an Aleppo pine forest was sampled and burned in the laboratory, recording the temperature continuously at the topsoil surface and at soil depths of 1, 2, and 3cm. Changes in soil properties were measured at 0-1, 1-2, 2-3, and 3-4cm. Both the maximum temperature and the charring intensities were significantly lower in wet soils than in air-dried soils up to 3cm in depth...
June 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28595156/self-assembly-of-exfoliated-molybdenum-disulfide-mos2-nanosheets-and-layered-double-hydroxide-ldh-towards-reducing-fire-hazards-of-epoxy
#15
Keqing Zhou, Rui Gao, Xiaodong Qian
In present study, LDH/MoS2 hybrids were facilely prepared by self-assembly of exfoliated MoS2 nanosheets and LDH via electrostatic force. The structure and morphology of the LDH/MoS2 hybrids were characterized and then introduced into epoxy for reducing its fire hazards. Compared with single MoS2, LDH/MoS2 hybrids showed a more homogeneous dispersion in the epoxy matrix and no obvious agglomerates were observed. Compared with MoS2, the addition of LDH/MoS2 hybrids endowed more excellent fire resistance to epoxy matrix, which was reflected by the significantly reduced peak heat release rate, total heat release and total smoke production...
May 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28591198/single-dose-primaquine-to-reduce-gametocyte-carriage-and-plasmodium-falciparum-transmission-in-cambodia-an-open-label-randomized-trial
#16
Jessica T Lin, Chanthap Lon, Michele D Spring, Somethy Sok, Soklyda Chann, Mali Ittiverakul, Worachet Kuntawunginn, Mok My, Kheangheng Thay, Rifat Rahman, Sujata Balasubramanian, Mengchuor Char, Charlotte A Lanteri, Panita Gosi, Ratawan Ubalee, Steven R Meshnick, David L Saunders
BACKGROUND: Single low dose primaquine (SLD PQ, 0.25mg/kg) is recommended in combination with artemisinin-based combination therapy (ACT) as a gametocytocide to prevent Plasmodium falciparum transmission in areas threatened by artemisinin resistance. To date, no randomized controlled trials have measured primaquine's effect on infectiousness to Anopheline mosquitoes in Southeast Asia. METHODS: Cambodian adults with uncomplicated falciparum malaria were randomized to receive a single 45mg dose of primaquine (equivalent to three SLD PQ) or no primaquine after the third dose of dihydroartemisin-piperaquine (DHP) therapy...
2017: PloS One
https://www.readbyqxmd.com/read/28588959/assessment-of-the-implementation-fidelity-of-the-arctic-char-distribution-project-in-nunavik-quebec
#17
Lara Gautier, Catherine M Pirkle, Christopher Furgal, Michel Lucas
BACKGROUND: In September 2011, the Nunavik Regional Board of Health and Social Services began supporting the Arctic Char Distribution Project (AC/DP) for pregnant women. This initiative promoted consumption of the fish Arctic char-a traditional Inuit food-by pregnant women living in villages of Nunavik, an area in northern Quebec (Canada) inhabited predominantly by people of Inuit ethnicity. This intervention was intended to reduce exposure to contaminants and improve food security in Inuit communities...
November 2016: BMJ Global Health
https://www.readbyqxmd.com/read/28575476/depressive-symptoms-as-a-predictor-of-memory-complaints-in-the-prism-sample
#18
Jong-Sung Yoon, Neil Charness, Walter R Boot, Sara J Czaja, Wendy A Rogers
Objectives: The current study investigated baseline and longitudinal relationships between memory complaints, depressive symptoms, and cognition in older adults. Method: Using the sample from the Personal Reminder Information and Social Management trial, we generated path models predicting self-rated memory complaints measured by the Memory Functioning Questionnaire (MFQ). Results: Our baseline models showed that more depressive symptoms were associated with reporting more frequent forgetting incidents and a greater decline in memory function...
June 1, 2017: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28570885/ex-situ-catalytic-co-pyrolysis-of-lignin-and-polypropylene-to-upgrade-bio-oil-quality-by-microwave-heating
#19
Dengle Duan, Yunpu Wang, Leilei Dai, Roger Ruan, Yunfeng Zhao, Liangliang Fan, Maimaitiaili Tayier, Yuhuan Liu
Microwave-assisted fast co-pyrolysis of lignin and polypropylene for bio-oil production was conducted using the ex-situ catalysis technology. Effects of catalytic temperature, feedstock/catalyst ratio, and lignin/polypropylene ratio on product distribution and chemical components of bio-oil were investigated. The catalytic temperature of 250°C was the most conducive to bio-oil production in terms of the yield. The bio-oil yield decreased with the addition of catalyst during ex-situ catalytic co-pyrolysis. When the feedstock/catalyst ratio was 2:1, the minimum char and coke values were 21...
April 29, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28561583/the-preparation-of-a-novel-intumescent-flame-retardant-based-on-supramolecular-interactions-and-its-application-in-polyamide-11
#20
Xiaodong Jin, Jun Sun, Jessica Shiqing Zhang, Xiaoyu Gu, Serge Bourbigot, Hongfei Li, Wufei Tang, Sheng Zhang
The flammability and melt dripping of the widely used bio-based polyamide 11 (PA 11) have attracted much attention in the last decade, and they are still a big challenge for the fire science society. In this work, a novel single macromolecular intumescent flame retardant (AM-APP) which contains an acid source and a gas source was prepared by supramolecular reactions between melamine and p-aminobenzene sulfonic acid, followed by an ionic exchange with ammonium polyphosphate. The chemical structure of AM-APP was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and Scanning electron microscopy (SEM)...
May 31, 2017: ACS Applied Materials & Interfaces
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