keyword
MENU ▼
Read by QxMD icon Read
search

Wind

keyword
https://www.readbyqxmd.com/read/27910368/airfoil-based-electromagnetic-energy-harvester-containing-parallel-array-motion-between-moving-coil-and-multi-pole-magnets-towards-enhanced-power-density
#1
Chung Ming Leung, Ya Wang, Wusi Chen
In this letter, the airfoil-based electromagnetic energy harvester containing parallel array motion between moving coil and trajectory matching multi-pole magnets was investigated. The magnets were aligned in an alternatively magnetized formation of 6 magnets to explore enhanced power density. In particular, the magnet array was positioned in parallel to the trajectory of the tip coil within its tip deflection span. The finite element simulations of the magnetic flux density and induced voltages at an open circuit condition were studied to find the maximum number of alternatively magnetized magnets that was required for the proposed energy harvester...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909827/remediation-of-blowouts-by-clonal-plants-in-maqu-degraded-alpine-grasslands-of-northwest-china
#2
JianJun Kang, WenZhi Zhao, Ming Zhao
The sand-fixation of plants is considered to be the most effective and fundamental measure in desertification control in many arid and semi-arid regions. Carex brunnescens (Carex spp) and Leymus secalinus (Leymus), two perennial clonal herbs native to the Maqu degraded alpine areas of northwest China, are dominant and constructive species in active sand dunes that have excellent adaptability to fix sand dunes found to date. In order to study the ability and mechanism of sandland blowout remediation by two clone plants C...
December 1, 2016: Journal of Plant Research
https://www.readbyqxmd.com/read/27909460/attribution-of-net-carbon-change-by-disturbance-type-across-forest-lands-of-the-conterminous-united-states
#3
N L Harris, S C Hagen, S S Saatchi, T R H Pearson, C W Woodall, G M Domke, B H Braswell, B F Walters, S Brown, W Salas, A Fore, Y Yu
BACKGROUND: Locating terrestrial sources and sinks of carbon (C) will be critical to developing strategies that contribute to the climate change mitigation goals of the Paris Agreement. Here we present spatially resolved estimates of net C change across United States (US) forest lands between 2006 and 2010 and attribute them to natural and anthropogenic processes. RESULTS: Forests in the conterminous US sequestered -460 ± 48 Tg C year(-1), while C losses from disturbance averaged 191 ± 10 Tg C year(-1)...
December 2016: Carbon Balance and Management
https://www.readbyqxmd.com/read/27909222/associations-between-environmental-factors-and-hospital-admissions-for-sickle-cell-disease
#4
Frédéric B Piel, Sanjay Tewari, Valentine Brousse, Antonis Analitis, Anna Font, Stephan Menzel, Subarna Chakravorty, Swee Lay Thein, Baba Inusa, Paul Telfer, Marianne de Montalembert, Gary W Fuller, Klea Katsouyanni, David C Rees
Sickle cell disease (SCD) is an increasing global health burden. This inherited disease is characterised by a remarkable phenotypic heterogeneity, which can only partly be explained by genetic factors. Environmental factors are likely to play an important role but studies of their impact on disease severity are limited and their results are often inconsistent. This study investigated associations between a range of environmental factors and hospital admissions of young patients with SCD in London and in Paris between 2008 and 2012...
December 1, 2016: Haematologica
https://www.readbyqxmd.com/read/27908515/intraoperative-enteroscopy-is-there-still-a-role
#5
REVIEW
Thibault Voron, Gabriel Rahmi, Stephane Bonnet, Georgia Malamut, Philippe Wind, Christophe Cellier, Anne Berger, Richard Douard
Intraoperative enteroscopy (IOE) to explore obscure gastrointestinal bleeding is now rarely indicated. IOE allows complete small bowel exploration in 57% to 100% of cases, finds a bleeding source in 80% of cases, allows the recurrence-free management of gastrointestinal bleeding in 76% of cases, but carries a high morbidity and mortality. IOE only remains indicated to guide the intraoperative treatment of preoperatively identified small bowel lesions when nonoperative treatments are unavailable and/or when intraoperative localization by external examination is impossible...
January 2017: Gastrointestinal Endoscopy Clinics of North America
https://www.readbyqxmd.com/read/27908084/a-robust-automatic-birdsong-phrase-classification-a-template-based-approach
#6
Kantapon Kaewtip, Abeer Alwan, Colm O'Reilly, Charles E Taylor
Automatic phrase detection systems of bird sounds are useful in several applications as they reduce the need for manual annotations. However, birdphrase detection is challenging due to limited training data and background noise. Limited data occur because of limited recordings or the existence of rare phrases. Background noise interference occurs because of the intrinsic nature of the recording environment such as wind or other animals. This paper presents a different approach to birdsong phrase classification using template-based techniques suitable even for limited training data and noisy environments...
November 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27908077/tropical-littoral-ambient-noise-probability-density-function-model-based-on-sea-surface-temperature
#7
Piyush Asolkar, Arnab Das, Suhas Gajre, Yashwant Joshi
Ambient noise variability in tropical shallow water presents a critical challenge for sonar designers and operators due to site-specific sea surface fluctuations. Sea surface temperature (SST) is a direct measure of energy balance defining the local climate of the region and hence ambient noise characteristics. In this work, an ambient noise probability density function (pdf) model for a spectral band of 3-10 kHz has been designed based on the statistical distribution of SST and validated using real field data...
November 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27907223/-mental-retirement-trajectories-of-work-engagement-preceding-retirement-among-older-workers
#8
Astrid de Wind, Fenna Rm Leijten, Trynke Hoekstra, Goedele A Geuskens, Alex Burdorf, Allard J van der Beek
Objectives Before actual retirement, employees may already distance themselves from work, which could be referred to as "mental retirement". However, trajectories of work motivation, ie, work engagement, have not been studied yet. The present study aimed to (i) identify different trajectories of work engagement among older workers approaching the retirement age, and (ii) examine their associations with actual retirement. Methods In total 3171 employees aged 55-62 years, who participated in the Dutch Study on Transitions in Employment, Ability and Motivation were included in this study...
December 1, 2016: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/27907178/characteristics-of-phytoplankton-biomass-primary-production-and-community-structure-in-the-modaomen-channel-pearl-river-estuary-with-special-reference-to-the-influence-of-saltwater-intrusion-during-neap-and-spring-tides
#9
Weihua Zhou, Jie Gao, Jianzu Liao, Ronggui Shi, Tao Li, Yajuan Guo, Aimin Long
In recent decades, increasing frequency and intensity of saltwater intrusion in the Modaomen Channel has threatened the freshwater supply in the surrounding cities of the Pearl River Estuary, and ulteriorly changed the environmental conditions of the estuarine waters. Phytoplankton biomass, primary production (PP) and species composition, as well as hydrological and chemical parameters were examined along a downstream transect in the Modaomen Channel during neap tide (NT) and spring tide (ST), when a strong saltwater intrusion event occurred in late September, 2011...
2016: PloS One
https://www.readbyqxmd.com/read/27906787/temporal-variations-of-air-dose-rates-in-east-fukushima-during-japanese-fiscal-years-2012-and-2013
#10
Kazuhiro Akimoto
Temporal variations of ambient air dose rates in eastern Fukushima prefecture during Japanese fiscal years 2012 and 2013 are analyzed. The average overall variation rate of air dose rates in east Fukushima during the examined period is found to be 0.49 (51% down) compared to the theoretically predicted value 0.65 (35% down) based on physical decay of radioactive cesium nuclides. On average, local dose rates declined almost linearly for the relatively short period. Temporal characteristics of air dose rates may be classified into variation rates, peaks, spikes, and oscillations...
January 2017: Health Physics
https://www.readbyqxmd.com/read/27902778/an-insecticide-further-enhances-experience-dependent-increased-behavioural-responses-to-sex-pheromone-in-a-pest-insect
#11
Antoine Abrieux, Amel Mhamdi, Kaouther K Rabhi, Julie Egon, Stéphane Debernard, Line Duportets, Hélène Tricoire-Leignel, Sylvia Anton, Christophe Gadenne
Neonicotinoid insecticides are widely used to protect plants against pest insects, and insecticide residues remaining in the environment affect both target and non-target organisms. Whereas low doses of neonicotinoids have been shown to disturb the behaviour of pollinating insects, recent studies have revealed that a low dose of the neonicotinoid clothianidin can improve behavioural and neuronal sex pheromone responses in a pest insect, the male moth Agrotis ipsilon, and thus potentially improve reproduction...
2016: PloS One
https://www.readbyqxmd.com/read/27902712/is-there-a-future-for-nuclear-power-wind-and-emission-reduction-targets-in-fossil-fuel-alberta
#12
G Cornelis van Kooten, Jun Duan, Rachel Lynch
This paper explores the viability of relying on wind power to replace upwards of 60% of electricity generation in Alberta that would be lost if coal-fired generation is phased out. Using hourly wind data from 17 locations across Alberta, we are able to simulate the potential wind power output available to the Alberta grid when modern, 3.5 MW-capacity wind turbines are spread across the province. Using wind regimes for the years 2006 through 2015, we find that available wind power is less than 60% of installed capacity 98% of the time, and below 30% of capacity 74% of the time...
2016: PloS One
https://www.readbyqxmd.com/read/27901077/very-rapid-long-distance-sea-crossing-by-a-migratory-bird
#13
José A Alves, Maria P Dias, Verónica Méndez, Borgný Katrínardóttir, Tómas G Gunnarsson
Landbirds undertaking within-continent migrations have the possibility to stop en route, but most long-distance migrants must also undertake large non-stop sea crossings, the length of which can vary greatly. For shorebirds migrating from Iceland to West Africa, the shortest route would involve one of the longest continuous sea crossings while alternative, mostly overland, routes are available. Using geolocators to track the migration of Icelandic whimbrels (Numenius phaeopus), we show that they can complete a round-trip of 11,000 km making two non-stop sea crossings and flying at speeds of up to 24 m s(-1); the fastest recorded for shorebirds flying over the ocean...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900238/power-flow-analysis-and-optimal-locations-of-resistive-type-superconducting-fault-current-limiters
#14
Xiuchang Zhang, Harold S Ruiz, Jianzhao Geng, Boyang Shen, Lin Fu, Heng Zhang, Tim A Coombs
Based on conventional approaches for the integration of resistive-type superconducting fault current limiters (SFCLs) on electric distribution networks, SFCL models largely rely on the insertion of a step or exponential resistance that is determined by a predefined quenching time. In this paper, we expand the scope of the aforementioned models by considering the actual behaviour of an SFCL in terms of the temperature dynamic power-law dependence between the electrical field and the current density, characteristic of high temperature superconductors...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27898716/potential-use-of-best%C3%A2-sediment-trap-in-splash-saltation-transport-process-by-simultaneous-wind-and-rain-tests
#15
Mustafa Basaran, Oguzhan Uzun, Wim Cornelis, Donald Gabriels, Gunay Erpul
The research on wind-driven rain (WDR) transport process of the splash-saltation has increased over the last twenty years as wind tunnel experimental studies provide new insights into the mechanisms of simultaneous wind and rain (WDR) transport. The present study was conducted to investigate the efficiency of the BEST® sediment traps in catching the sand particles transported through the splash-saltation process under WDR conditions. Experiments were conducted in a wind tunnel rainfall simulator facility with water sprayed through sprinkler nozzles and free-flowing wind at different velocities to simulate the WDR conditions...
2016: PloS One
https://www.readbyqxmd.com/read/27897143/synthetic-gauge-field-and-pseudospin-orbit-interaction-in-a-stacked-two-dimensional-ring-network-lattice
#16
Tetsuyuki Ochiai
We study the effects of a synthetic gauge field and pseudospin-orbit interaction in a stacked two-dimensional ring-network model. The model was introduced to simulate light propagation in the corresponding ring-resonator lattice, and is thus completely bosonic. Without these two items, the model exhibits Floquet-Weyl and Floquet-topological-insulator phases with topologically gapless and gapped band structures, respectively. The synthetic magnetic field implemented in the model results in a three-dimensional Hofstadter-butterfly-type spectrum in a photonic platform...
November 29, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/27894699/fault-diagnosis-for-wind-turbine-planetary-ring-gear-via-a-meshing-resonance-based-filtering-algorithm
#17
Tianyang Wang, Fulei Chu, Qinkai Han
Identifying the differences between the spectra or envelope spectra of a faulty signal and a healthy baseline signal is an efficient planetary gearbox local fault detection strategy. However, causes other than local faults can also generate the characteristic frequency of a ring gear fault; this may further affect the detection of a local fault. To address this issue, a new filtering algorithm based on the meshing resonance phenomenon is proposed. In detail, the raw signal is first decomposed into different frequency bands and levels...
November 25, 2016: ISA Transactions
https://www.readbyqxmd.com/read/27893946/predicting-animal-home-range-structure-and-transitions-using-a-multistate-ornstein-uhlenbeck-biased-random-walk
#18
Greg A Breed, Emily A Golson, M Tim Tinker
The home-range concept is central in animal ecology and behavior, and numerous mechanistic models have been developed to understand home range formation and maintenance. These mechanistic models usually assume a single, contiguous home range. Here we describe and implement a simple home-range model that can accommodate multiple home-range centers, form complex shapes, allow discontinuities in use patterns, and infer how external and internal variables affect movement and use patterns. The model assumes individuals associate with two or more home-range centers and move among them with some estimable probability...
October 6, 2016: Ecology
https://www.readbyqxmd.com/read/27893826/macro-scale-patterns-in-upwelling-downwelling-activity-at-north-american-west-coast
#19
Romeo Saldívar-Lucio, Emanuele Di Lorenzo, Miguel Nakamura, Héctor Villalobos, Daniel Lluch-Cota, Pablo Del Monte-Luna
The seasonal and interannual variability of vertical transport (upwelling/downwelling) has been relatively well studied, mainly for the California Current System, including low-frequency changes and latitudinal heterogeneity. The aim of this work was to identify potentially predictable patterns in upwelling/downwelling activity along the North American west coast and discuss their plausible mechanisms. To this purpose we applied the min/max Autocorrelation Factor technique and time series analysis. We found that spatial co-variation of seawater vertical movements present three dominant low-frequency signals in the range of 33, 19 and 11 years, resembling periodicities of: atmospheric circulation, nodal moon tides and solar activity...
2016: PloS One
https://www.readbyqxmd.com/read/27893165/enabling-stakeholder-involvement-in-coastal-disaster-resilience-planning
#20
Thomas P Bostick, Thomas H Holzer, Shahryar Sarkani
Coastal hazards including storm surge, sea-level rise, and cyclone winds continue to have devastating effects on infrastructure systems and communities despite costly investments in risk management. Risk management has generally not been sufficiently focused on coastal resilience, with community stakeholders involved in the process of making their coastline, as a system, more resilient to coastal storms. Thus, without stakeholder earlier involvement in coastal resilience planning for their community, they are frustrated after disasters occur...
November 28, 2016: Risk Analysis: An Official Publication of the Society for Risk Analysis
keyword
keyword
68080
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"