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https://www.readbyqxmd.com/read/28340385/experimental-study-of-polyethylene-pyrolysis-and-combustion-over-hzsm-5-husy-and-mcm-41
#1
Que Huang, Changcheng Liu, Ruichao Wei, Jian Wang
The effects of temperatures, catalysts, and catalyst contents on polyethylene (PE) pyrolysis were investigated by using single-photon ionization time-of-flight mass spectrometry (SPI-TOFMS). The mass spectra of pyrolyzed PE and PE/catalysts from 300°C to 800°C illustrate that the pyrolysis reactions were apparently promoted and varied by introducing HZSM-5, HUSY, and MCM-41. As microporous catalysts, HZSM-5 and HUSY were found to accelerate the BTX formation at 400°C, which could not be observed for pure PE until 800°C...
March 14, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28339601/characterization-and-consistency-of-interactions-of-triggers-and-substrate-at-the-onset-of-paroxysmal-atrial-fibrillation
#2
David G Jones, Vias Markides, Anthony W C Chow, Richard J Schilling, Prapa Kanagaratnam, Tom Wong, D Wyn Davies, Nicholas S Peters
Aims: Initiating mechanisms of atrial fibrillation (AF) remain poorly understood, involving complex interaction between triggers and the atrial substrate. This study sought to classify the transitional phenomena, hypothesizing that there is consistency within and between patients in trigger-substrate interaction during transition to AF. Methods and results: Non-contact left atrial (LA) mapping was performed in 17 patients undergoing ablation for paroxysmal AF. All had spontaneous ectopy...
January 25, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339460/evaluating-implementation-of-a-fire-prevention-injury-prevention-briefing-in-children-s-centres-cluster-randomised-controlled-trial
#3
Toity Deave, Adrian Hawkins, Arun Kumar, Mike Hayes, Nicola Cooper, Michael Watson, Joanne Ablewhite, Carol Coupland, Alex Sutton, Gosia Majsak-Newman, Lisa McDaid, Trudy Goodenough, Kate Beckett, Elaine McColl, Richard Reading, Denise Kendrick
BACKGROUND: Many developed countries have high mortality rates for fire-related deaths in children aged 0-14 years with steep social gradients. Evidence-based interventions to promote fire safety practices exist, but the impact of implementing a range of these interventions in children's services has not been assessed. We developed an Injury Prevention Briefing (IPB), which brought together evidence about effective fire safety interventions and good practice in delivering interventions; plus training and facilitation to support its use and evaluated its implementation...
2017: PloS One
https://www.readbyqxmd.com/read/28334680/assessing-driving-forces-of-land-use-and-land-cover-change-by-a-mixed-method-approach-in-north-eastern-ghana-west-africa
#4
Janina Kleemann, Gülendam Baysal, Henry N N Bulley, Christine Fürst
Land use and land cover change (LULCC) is the result of complex human-environmental interactions. The high interdependencies in social-ecological systems make it difficult to identify the main drivers. However, knowledge of key drivers of LULCC, including indirect (underlying) drivers which cannot be easily determined by spatial or economic analyses, is essential for land use planning and especially important in developing countries. We used a mixed-method approach in order to detect drivers of LULCC in the Upper East Region of northern Ghana by different qualitative and quantitative methods which were compared in a confidence level analysis...
March 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28334610/a-novel-mechanism-for-the-grid-to-place-cell-transformation-revealed-by-transgenic-depolarization-of-medial-entorhinal-cortex-layer-ii
#5
Benjamin R Kanter, Christine M Lykken, Daniel Avesar, Aldis Weible, Jasmine Dickinson, Benjamin Dunn, Nils Z Borgesius, Yasser Roudi, Clifford G Kentros
The spatial receptive fields of neurons in medial entorhinal cortex layer II (MECII) and in the hippocampus suggest general and environment-specific maps of space, respectively. However, the relationship between these receptive fields remains unclear. We reversibly manipulated the activity of MECII neurons via chemogenetic receptors and compared the changes in downstream hippocampal place cells to those of neurons in MEC. Depolarization of MECII impaired spatial memory and elicited drastic changes in CA1 place cells in a familiar environment, similar to those seen during remapping between distinct environments, while hyperpolarization did not...
March 22, 2017: Neuron
https://www.readbyqxmd.com/read/28334604/the-potential-role-of-gap-junctional-plasticity-in-the-regulation-of-state
#6
REVIEW
Philippe Coulon, Carole E Landisman
Electrical synapses are the functional correlate of gap junctions and allow transmission of small molecules and electrical current between coupled neurons. Instead of static pores, electrical synapses are actually plastic, similar to chemical synapses. In the thalamocortical system, gap junctions couple inhibitory neurons that are similar in their biochemical profile, morphology, and electrophysiological properties. We postulate that electrical synaptic plasticity among inhibitory neurons directly interacts with the switching between different firing patterns in a state-dependent and type-dependent manner...
March 22, 2017: Neuron
https://www.readbyqxmd.com/read/28334221/enhanced-pest-ant-control-with-hydrophobic-bait
#7
R K Vander Meer, D E Milne
The red imported fire ant, Solenopsis invicta (Buren), left most of its natural enemies behind in South America when it arrived in Mobile, AL, in the 1930s and spread rapidly throughout the southeastern United States, reaching population levels up to 10 times those found in South America. The large population densities and propensity for disturbed habitats led to direct conflict with human activities. Bait control methods were first developed for fire ants in the early 1960s and little has changed in the subsequent decades, despite the drawback that the bait carrier rapidly breaks down when wet...
February 20, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28334211/effect-of-sweeteners-on-the-survival-of-solenopsis-invicta-hymenoptera-formicidae
#8
Xiaoqiang Zhang, Siqi Chen, Zhiqiang Li, Yijuan Xu
The red imported fire ant, Solenopsis invicta Buren, is a serious agricultural, ecological, and public health pest in its invaded range. Chemical insecticides have been widely used for the prevention and control of this notorious pest. To search for novel, cost-effective, and environmentally friendly materials for fire ant control, we tested various sweeteners for their toxicity to S. invicta. The S. invicta that were fed erythritol, aspartame, and saccharin exhibited significantly higher mortality rates than those fed other sweeteners...
March 15, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28334188/climate-extremes-vegetation-change-and-decoupling-of-interactive-fire-grazing-processes-exacerbate-fly-parasitism-of-cattle
#9
John D Scasta, Justin L Talley, David M Engle, Diane M Debinski
We assessed local horn fly (Haematobia irritans L.) and face fly (Musca autumnalis De Geer) communities on cattle in 2012 and 2013 relative to vegetation and climate data to understand how parasitism of cattle is influenced by change in climate and vegetation structure. We compared heterogeneity management using spatially and temporally discrete fires (i.e., patch-burning one-third of a pasture annually) to homogeneity management (i.e., burning entire pasture in 2012 then no burning in 2013), with cattle grazing all years in both treatments...
February 17, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28334187/individual-differences-in-human-auditory-processing-insights-from-single-trial-auditory-midbrain-activity-in-an-animal-model
#10
Travis White-Schwoch, Trent Nicol, Catherine M Warrier, Daniel A Abrams, Nina Kraus
Auditory-evoked potentials are classically defined as the summations of synchronous firing along the auditory neuraxis. Converging evidence supports a model whereby timing jitter in neural coding compromises listening and causes variable scalp-recorded potentials. Yet the intrinsic noise of human scalp recordings precludes a full understanding of the biological origins of individual differences in listening skills. To delineate the mechanisms contributing to these phenomena, in vivo extracellular activity was recorded from inferior colliculus in guinea pigs to speech in quiet and noise...
October 5, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/28334021/the-effect-of-remnant-forest-on-insect-successional-response-in-tropical-fire-impacted-peatland-a-bi-taxa-comparison
#11
Kok-Boon Neoh, Lee-Jin Bong, Ahmad Muhammad, Masayuki Itoh, Osamu Kozan, Yoko Takematsu, Tsuyoshi Yoshimura
Fire has become a common feature in tropical drained peatlands, and it may have detrimental impacts on the overall biodiversity of the forest ecosystem. We investigated the effect of fire on termite and ant assemblages and the importance of remnant forest in restoring species diversity in fire-impacted tropical peat swamp forests. The species loss of both termites and ants was as high as 50% in some fire-impacted peats compared to remnant forests, but in most cases the species richness for termites and ants was statistically equal along the land uses surveyed...
2017: PloS One
https://www.readbyqxmd.com/read/28333700/intimate-partner-violence-a-rare-case-of-reciprocal-homicide
#12
Aurélie Cauchois, François Paraire, Geoffroy Lorin de la Grandmaison
We present the case of a reciprocal homicide by stabbing that occurred within an unmarried couple without known history of spousal violence. Each partner killed the other one at the same time and at the same place using kitchen knives. They were both found dead at home lying on the floor after the neighbors heard an argument and screams coming from the couple's apartment, so they called the police and the fire department. The door was locked from the inside, and the fire department was forced to break the door...
March 23, 2017: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/28333609/fundamental-use-of-surgical-energy-fuse-an-essential-educational-program-for-operating-room-safety
#13
Stephanie B Jones, Malcolm G Munro, Liane S Feldman, Thomas N Robinson, L Michael Brunt, Steven D Schwaitzberg, Daniel B Jones, Pascal R Fuchshuber
Operating room (OR) safety has become a major concern in patient safety since the 1990s. Improvement of team communication and behavior is a popular target for safety programming at the institutional level. Despite these efforts, essential safety gaps remain in the OR and procedure rooms. A prime example is the use of energy-based devices in ORs and procedural areas. The lack of fundamental understanding of energy device function, design, and application contributes to avoidable injury and harm at a rate of approximately 1 to 2 per 1000 patients in the US...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28333500/catching-fire-and-spreading-it-a-glimpse-into-displayed-entrepreneurial-passion-in-crowdfunding-campaigns
#14
Junchao Jason Li, Xiao-Ping Chen, Suresh Kotha, Greg Fisher
Crowdfunding is an emerging phenomenon that enables entrepreneurs to solicit financial contributions for new projects from mass audiences. Drawing on the elaboration likelihood model of persuasion and emotional contagion theory, the authors examined the importance of displayed entrepreneurial passion when seeking resources in a crowdfunding context. They proposed that entrepreneurs' displayed passion in the introductory video for a crowdfunding project increases viewers' experienced enthusiasm about the project (i...
March 23, 2017: Journal of Applied Psychology
https://www.readbyqxmd.com/read/28332918/artificial-and-natural-rna-interactions-between-bacteria-and-c-elegans
#15
Fabian Braukmann, David Jordan, Eric Miska
19 years after Lisa Timmons and Andy Fire first described RNA transfer from bacteria to C. elegans in an experimental setting [Timmons and Fire, 1998 ] the biological role of this trans-kingdom RNA-based communication remains unknown. Here we summarize our current understanding on the mechanism and potential role of such social RNA.
March 23, 2017: RNA Biology
https://www.readbyqxmd.com/read/28332590/nicotine-enhances-alcohol-intake-and-dopaminergic-responses-through-%C3%AE-2-and-%C3%AE-4-nicotinic-acetylcholine-receptors
#16
Stefania Tolu, Fabio Marti, Carole Morel, Carole Perrier, Nicolas Torquet, Stephanie Pons, Renaud de Beaurepaire, Philippe Faure
Alcohol and nicotine are the most widely co-abused drugs. Both modify the activity of dopaminergic (DA) neurons of the Ventral Tegmental Area (VTA) and lead to an increase in DA release in the Nucleus Accumbens, thereby affecting the reward system. Evidences support the hypothesis that distinct nicotinic acetylcholine receptors (nAChRs), the molecular target of acetylcholine (ACh) and exogenous nicotine, are also in addition implicated in the response to alcohol. The precise molecular and neuronal substrates of this interaction are however not well understood...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332484/multivariate-regression-methods-for-estimating-velocity-of-ictal-discharges-from-human-microelectrode-recordings
#17
Jyun-You Liou, Elliot Smith, Lisa Bateman, Guy McKhann, Robert Goodman, Bradley Greger, Tyler Davis, Spencer Kellis, Paul House, Catherine Schevon
OBJECTIVE: Epileptiform discharges, an electrophysiological hallmark of seizures, can propagate across cortical tissue in a manner similar to traveling waves. Recent work has focused attention on the origination and propagation patterns of these discharges, yielding important clues to their source location and mechanism of travel. However, systematic studies of methods for measuring propagation are lacking. APPROACH: We analyzed epileptiform discharges in microelectrode array recordings of human seizures...
March 23, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28331475/taming-the-rampant-fire-with-fat
#18
Libor Velíšek
No abstract text is available yet for this article.
January 2017: Epilepsy Currents
https://www.readbyqxmd.com/read/28331009/the-modulation-of-two-motor-behaviours-by-persistent-sodium-currents-in-xenopus-laevis-tadpoles
#19
Erik Svensson, Hugo Jeffreys, Wen-Chang Li
Persistent sodium currents (INaP) are common in neuronal circuitries and they have been implicated in several diseases like amyotrophic lateral sclerosis (ALS) and epilepsy. However, the role of INaP in the regulation of specific behaviours is still poorly understood. Here we have characterized INaP and investigated its role in the swimming and struggling behaviour of Xenopus tadpoles. INaP was identified in three groups of neurons, namely sensory Rohon-Beard neurons (RB neurons), descending interneurons (dINs), and non-dINs (neurons rhythmically active in swimming)...
March 22, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28331006/monkey-prefrontal-neurons-during-sternberg-task-performance-full-contents-of-working-memory-or-most-recent-item
#20
Roma O Konecky, Matthew A Smith, Carl R Olson
To explore the brain mechanisms underlying multi-item working memory, we monitored the activity of neurons in dorsolateral prefrontal cortex while macaque monkeys performed spatial and chromatic versions of a Sternberg working-memory task. Each trial required holding three sequentially presented samples in working memory so as to identify a subsequent probe matching one of them. The monkeys were able to recall all three samples at levels well above chance, exhibiting modest load and recency effects. Prefrontal neurons signaled the identity of each sample during the delay period immediately following its presentation...
March 22, 2017: Journal of Neurophysiology
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