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https://www.readbyqxmd.com/read/29786900/avian-demographic-responses-to-drought-and-fire-a-community-level-perspective
#1
James F Saracco, Stephen M Fettig, George L San Miguel, David W Mehlman, Steven K Albert
Drought stress is an important consideration for wildlife in arid and semi-arid regions under climate change. Drought can impact plant and animal populations directly, through effects on their physiology, as well as indirectly through effects on vegetation productivity and resource availability, and by creating conditions conducive to secondary disturbance, such as wildfire. We implemented a novel approach to understanding community-level demographic responses of birds and their habitats to these stressors in the context of climate change at 14 study sites in the Four Corners region of the southwestern United States...
May 22, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29785975/utility-of-otoacoustic-emissions-and-olivocochlear-reflex-in-predicting-vulnerability-to-noise-induced-inner-ear-damage
#2
Sarantis Blioskas, Miltiadis Tsalighopoulos, George Psillas, Konstantinos Markou
Aim: The aim of the present study was to explore the possible utility of otoacoustic emissions (OAEs) and efferent system strength to determine vulnerability to noise exposure in a clinical setting. Materials and Methods: The study group comprised 344 volunteers who had just begun mandatory basic training as Hellenic Corps Officers Military Academy cadets. Pure-tone audiograms were obtained on both ears. Participants were also subjected to diagnostic transient-evoked otoacoustic emissions (TEOAEs)...
May 2018: Noise & Health
https://www.readbyqxmd.com/read/29784588/brain-stimulation-patterns-emulating-endogenous-thalamocortical-input-to-parvalbumin-expressing-interneurons-reduce-nociception-in-mice
#3
Yeowool Huh, Dahee Jung, Taeyoon Seo, Sukkyu Sun, Su Hyun Kim, Hyewhon Rhim, Sooyoung Chung, Chong-Hyun Kim, Youngwoo Kwon, Marom Bikson, Yong-An Chung, Jeansok J Kim, Jeiwon Cho
BACKGROUND: The bursting pattern of thalamocortical (TC) pathway dampens nociception. Whether brain stimulation mimicking endogenous patterns can engage similar sensory gating processes in the cortex and reduce nociceptive behaviors remains uninvestigated. OBJECTIVE: We investigated the role of cortical parvalbumin expressing (PV) interneurons within the TC circuit in gating nociception and their selective response to TC burst patterns. We then tested if transcranial magnetic stimulation (TMS) patterned on endogenous nociceptive TC bursting modulate nociceptive behaviors...
May 18, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29784462/promoting-porcelain-zirconia-bonding-using-different-atmospheric-pressure-gas-plasmas
#4
Yi-Chuan Liu, Jung-Pei Hsieh, Yung-Chung Chen, Li-Li Kang, Chii-Shyang Hwang, Shu-Fen Chuang
OBJECTIVES: To evaluate the effects of different atmospheric-pressure plasma (APP) on the physicochemical properties of yttria-stabilized zirconia, and promoting the adhesion of veneering porcelain. METHODS: Cercon base zirconia disks were prepared to receive different treatments: as-polished, three APPs (oxygen, OP; argon, AP; and CF4 , CP), and grit-blasted (GB). Their surface roughness and hydrophilicity were measured, and surface morphology was examined either after treatments, after simulated porcelain firing, or additional thermal etching...
May 18, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29784447/prediction-and-perception-of-hazards-in-professional-drivers-does-hazard-perception-skill-differ-between-safe-and-less-safe-fire-appliance-drivers
#5
David Crundall, Victoria Kroll
Can hazard perception testing be useful for the emergency services? Previous research has found emergency response drivers' (ERDs) to perform better than controls, however these studies used clips of normal driving. In contrast, the current study filmed footage from a fire-appliance on blue-light training runs through Nottinghamshire, and endeavoured to discriminate between different groups of EDRs based on experience and collision risk. Thirty clips were selected to create two variants of the hazard perception test: a traditional push-button test requiring speeded-responses to hazards, and a prediction test that occludes at hazard onset and provides four possible outcomes for participants to choose between...
May 18, 2018: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29784304/contribution-of-l-theanine-to-the-formation-of-2-5-dimethylpyrazine-a-key-roasted-peanutty-flavor-in-oolong-tea-during-manufacturing-processes
#6
Xiangyang Guo, Chuankui Song, Chi-Tang Ho, Xiaochun Wan
l-Theanine, the most abundant amino acid in tea, is widely believed to be associated with the tea taste, however, its contribution to the formation of tea aroma is still unknown. Volatiles were determined and nitrogen-containing compounds formed during manufacturing processes were quantified. Lower levels of total sugar and l-theanine were detected in the Oolong tea product undergoing full fire processing (FFOT) suggesting that l-theanine probably involved in the volatile formation during manufacturing processes...
October 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29783906/bulleyaconitine-a-attenuates-hyperexcitability-of-dorsal-root-ganglion-neurons-induced-by-spared-nerve-injury-the-role-of-preferably-blocking-nav1-7-and-nav1-3-channels
#7
Man-Xiu Xie, Jie Yang, Rui-Ping Pang, Wei-An Zeng, Han-Dong Ouyang, Yan-Qing Liu, Xian-Guo Liu
Background Oral administration of Bulleyaconitine A, an extracted diterpenoid alkaloid from Aconitum bulleyanum plants, is effective for treating chronic pain in rats and in human patients, but the underlying mechanisms are poorly understood. Results As the hyperexcitability of dorsal root ganglion neurons resulting from the upregulation of voltage-gated sodium (Nav) channels has been proved critical for development of chronic pain, we tested the effects of Bulleyaconitine A on Nav channels in rat spared nerve injury model of neuropathic pain...
January 2018: Molecular Pain
https://www.readbyqxmd.com/read/29783117/changes-in-soil-nitrogen-dynamics-caused-by-prescribed-fires-in-dense-gorse-lands-in-sw-pyrenees
#8
Leire Múgica, Rosa M Canals, Leticia San Emeterio
Rural depopulation, abandonment of traditional land uses and decrease of extensive stockfarming is accelerating shrub encroachment in mountain areas. In NW Spain, gorse (Ulex gallii Planch.) is expanding, developing dense shrublands that accumulate high fuel-loads, ignite easily and persist during long periods as alternate stable states. Under this scenario, traditional bush-to-bush farming fires are being replaced by high fuel-load burnings performed by specialised teams to reduce fuels and promote mosaic landscapes...
May 18, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29782951/clinical-consequences-of-toxic-envenomations-by-hymenoptera
#9
Justin O Schmidt
Many familiar Hymenoptera are brightly colored and can sting painfully-thus, their threat and clinical importance may be exaggerated. Most stinging insects only sting to defend themselves or their colonies from predators. The clinical nature of Hymenoptera envenomations contrasts that of other venomous animals, including other arthropods, primarily because allergic reaction, not direct intoxication, is the usual main concern. This review focuses mainly on the clinical features of direct toxicity to Hymenoptera envenomations, which can induce a high incidence of acute renal failure, liver failure, multiple organ failures, and death...
May 18, 2018: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29782879/oxygen-delivery-after-cardiac-arrest-adding-fuel-to-the-fire
#10
EDITORIAL
Felipe Teran, Benjamin S Abella
No abstract text is available yet for this article.
May 18, 2018: Resuscitation
https://www.readbyqxmd.com/read/29782655/cross-scale-occupancy-dynamics-of-a-post-fire-specialist-in-response-to-variation-across-a-fire-regime
#11
Morgan W Tingley, Andrew N Stillman, Robert L Wilkerson, Christine A Howell, Sarah C Sawyer, Rodney B Siegel
1.Fire creates challenges and opportunities for wildlife through rapid destruction, modification, and creation of habitat. Fire has spatially variable effects on landscapes, however, and for species that benefit from the ephemeral resource patches created by fire, it is critical to understand characteristics of fires that promote post-fire colonization and persistence, and the spatial scales on which they operate. 2.Using a model post-fire specialist, the black-backed woodpecker (Picoides arcticus), we examined how colonization and persistence varied across two spatial scales as a function of four characteristics of fire regimes - fire severity, fire size, fire ignition date, and number of years since fire...
May 21, 2018: Journal of Animal Ecology
https://www.readbyqxmd.com/read/29782015/experimental-procedure-for-laboratory-studies-of-in-situ-burning-flammability-and-burning-efficiency-of-crude-oil
#12
Laurens van Gelderen, Grunde Jomaas
A new method for the simultaneous study of the flammability and burning efficiency of fresh and weathered crude oil through two experimental laboratory setups is presented. The experiments are easily repeatable compared to operational scale experiments (pool diameter ≥2 m), while still featuring quite realistic in situ burning conditions of crude oil on water. Experimental conditions include a flowing water sub-layer that cools the oil slick and an external heat flux (up to 50 kW/m2 ) that simulates the higher heat feedback to the fuel surface in operational scale crude oil pool fires...
May 1, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781869/utilizing-facebook-and-automated-telephone-calls-to-increase-adoption-of-a-local-smoke-alarm-installation-program
#13
Shannon Frattaroli, Eric Schulman, Eileen M McDonald, Elise C Omaki, Wendy C Shields, Vanya Jones, William Brewer
CONTEXT: Innovative strategies are needed to improve the prevalence of working smoke alarms in homes. To our knowledge, this is the first study to report on the effectiveness of Facebook advertising and automated telephone calls as population-level strategies to encourage an injury prevention behavior. OBJECTIVE: We examine the effectiveness of Facebook advertising and automated telephone calls as strategies to enroll individuals in Baltimore City's Fire Department's free smoke alarm installation program...
May 17, 2018: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/29781093/hippocampal-place-cell-encoding-of-sloping-terrain
#14
Blake S Porter, Robert Schmidt, David K Bilkey
Effective navigation relies on knowledge of one's environment. A challenge to effective navigation is accounting for the time and energy costs of routes. Irregular terrain in ecological environments poses a difficult navigational problem as organisms ought to avoid effortful slopes to minimize travel costs. Route planning and navigation have previously been shown to involve hippocampal place cells and their ability to encode and store information about an organism's environment. However, little is known about how place cells may encode the slope of space and associated energy costs as experiments are traditionally carried out in flat, horizontal environments...
May 21, 2018: Hippocampus
https://www.readbyqxmd.com/read/29780311/characteristics-of-rest-and-postural-tremors-in-parkinson-s-disease-an-analysis-of-motor-unit-firing-synchrony-and-patterns
#15
Orsalia M Agapaki, Constantinos N Christakos, Dimitrios Anastasopoulos
The neural mechanisms responsible for resting and postural tremor in Parkinson's disease (PD) have been the object of considerable study, much of it focusing on supraspinal sites. Here, we adopted an alternative approach that emphasizes motor unit (MU) firing synchrony and patterns of discharge. To explore if these could account for known features of PD tremor, we recorded the instantaneous acceleration of the upper limb of 23 PD patients at rest or while they tried to hold a stable posture together with surface EMG and single MU discharges of upper limb muscles...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29780300/encoding-of-sucrose-s-palatability-in-the-nucleus-accumbens-shell-and-its-modulation-by-exteroceptive-auditory-cues
#16
Miguel Villavicencio, Mario G Moreno, Sidney A Simon, Ranier Gutierrez
Although the palatability of sucrose is the primary reason for why it is over consumed, it is not well understood how it is encoded in the nucleus accumbens shell (NAcSh), a brain region involved in reward, feeding, and sensory/motor transformations. Similarly, untouched are issues regarding how an external auditory stimulus affects sucrose palatability and, in the NAcSh, the neuronal correlates of this behavior. To address these questions in behaving rats, we investigated how food-related auditory cues modulate sucrose's palatability...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29780033/public-attitudes-in-england-towards-the-sharing-of-personal-data-following-a-mass-casualty-incident-a-cross-sectional-study
#17
G James Rubin, Rebecca Webster, Antonia N Rubin, Richard Amlot, Nick Grey, Neil Greenberg
OBJECTIVES: To assess public attitudes towards data sharing to facilitate a mental health screening programme for people caught up in a mass casualty incident. DESIGN: Two, identical, cross-sectional, online surveys, using quotas to ensure demographic representativeness of people aged 18-65 years in England. Participants were randomly allocated to consider a scenario in which they witness a terrorism-related radiation incident or mass shooting, after which a police officer records their contact details...
May 20, 2018: BMJ Open
https://www.readbyqxmd.com/read/29779942/transformation-of-a-spatial-map-across-the-hippocampal-lateral-septal-circuit
#18
David Tingley, György Buzsáki
The hippocampus constructs a map of the environment. How this "cognitive map" is utilized by other brain regions to guide behavior remains unexplored. To examine how neuronal firing patterns in the hippocampus are transmitted and transformed, we recorded neurons in its principal subcortical target, the lateral septum (LS). We observed that LS neurons carry reliable spatial information in the phase of action potentials, relative to hippocampal theta oscillations, while the firing rates of LS neurons remained uninformative...
May 15, 2018: Neuron
https://www.readbyqxmd.com/read/29779916/out-of-the-frying-pan-and-into-the-fire
#19
Marc Mendelson, Davidson H Hamer
No abstract text is available yet for this article.
May 17, 2018: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29779875/three-dimensional-representation-of-motor-space-in-the-mouse-superior-colliculus
#20
Jonathan J Wilson, Nicolas Alexandre, Caterina Trentin, Marco Tripodi
From the act of exploring an environment to that of grasping a cup of tea, animals must put in register their motor acts with their surrounding space. In the motor domain, this is likely to be defined by a register of three-dimensional (3D) displacement vectors, whose recruitment allows motion in the direction of a target. One such spatially targeted action is seen in the head reorientation behavior of mice, yet the neural mechanisms underlying these 3D behaviors remain unknown. Here, by developing a head-mounted inertial sensor for studying 3D head rotations and combining it with electrophysiological recordings, we show that neurons in the mouse superior colliculus are either individually or conjunctively tuned to the three Eulerian components of head rotation...
May 15, 2018: Current Biology: CB
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