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Christianson Gestur Bjorn GB University - - 2014
In animal models, single-neuron response properties such as stimulus-specific adaptation (SSA) have been described as possible precursors to the mismatch negativity (MMN), a human brain response to stimulus change. Here, we attempt to bridge the gap between human and animal studies by characterising responses to changes in the frequency of ...
Hughes Laura E LE University of Cambridge - - 2014
Under binaural listening conditions, the detection of target signals within background masking noise is substantially improved when the interaural phase of the target differs from that of the masker. Neural correlates of this 'Binaural masking level difference' (BMLD) have been observed in the inferior colliculus and temporal cortex, but it ...
Cagnan Hayriye H 1 Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, West Wing Level 6, OX3 9DU, Oxford, - - 2014
Tremor is a cardinal feature of Parkinson's disease and essential tremor, the two most common movement disorders. Yet, the mechanisms underlying tremor generation remain largely unknown. We hypothesized that driving deep brain stimulation electrodes at a frequency closely matching the patient's own tremor frequency should interact with neural activity responsible ...
Sciutti Alessandra A Robotics, Brain and Cognitive Sciences Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genoa, Italy, - - 2014
Perception is a complex process, where prior knowledge exerts a fundamental influence over what we see. The use of priors is at the basis of the well-known phenomenon of central tendency: Judgments of almost all quantities (such as length, duration, and number) tend to gravitate toward their mean magnitude. Although ...
Kemmler Robin R Institute for Ophthalmic Research, Centre for Ophthalmology, Centre for Integrative Neuroscience, Graduate School of Cellular and Molecular Neuroscience, - - 2014
Controlling neurotransmitter release by modulating the presynaptic calcium level is a key mechanism to ensure reliable signal transmission from one neuron to the next. In this study, we investigated how the glutamatergic output of cone photoreceptors (cones) in the mouse retina is shaped by different feedback mechanisms from postsynaptic GABAergic ...
Christmann Corinna A CA Center for Cognitive Science, Cognitive and Developmental Psychology Unit, University of Kaiserslautern, Kaiserslautern, Germany. Electronic address: - - 2014
Harmonically rich sounds have been shown to be processed more efficiently by the human brain compared to single sinusoidal tones. To control for stimulus complexity as a potentially confounding factor, tones and equally complex spectrally rotated sounds, have been used in the present study to investigate the role of the ...
Agyei Seth B SB Department of Psychology, Norwegian University of Science and Technology, - - 2014
Electroencephalogram (EEG) was used in infants at 3-4 months and 11-12 months to longitudinally study brain electrical activity as the infants were exposed to structured forwards and reversed optic flow, and non-structured random visual motion. Analyses of visual evoked potential (VEP) and temporal spectral evolution (TSE, time-dependent amplitude changes) were performed on ...
Wang Chao C The Cultivation Base for State Key Laboratory, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, People's Republic of China. - - 2014
Novel hybrid nanocomposites of Cu2O nanoparticles (NPs) partially embedded in CuO nanowires (NWs) were produced by simple thermal reduction of CuO NWs in a vacuum. It is found that most Cu2O NPs adopt two regular shapes, one being cubic and the other being octahedral. The shape selection of the Cu2O ...
Barnett Alexandre A UMR7266 LIENSs 'Littoral, Environnement et Sociétés', CNRS/Université de La Rochelle, Institut du Littoral et de l'Environnement, La Rochelle, - - 2014
In intertidal marine sediments, characterized by rapidly fluctuating and often extreme light conditions, primary production is frequently dominated by diatoms. We performed a comparative analysis of photophysiological traits in 15 marine benthic diatom species belonging to the four major morphological growth forms (epipelon (EPL), motile epipsammon (EPM-M) and non-motile epipsammon ...
Suzuki Yuta - - 2014
The purpose of this study was to investigate differences in the support leg joint moment and moment power between side-step (SS) and cross-step (CS) cutting techniques with a prescribed 90 degrees cutting angle. Ground reaction forces (1,000Hz) and three-dimensional kinematics (250Hz) of SS and CS cutting techniques were collected from ...
Vahtera Emil E Woods Hole Oceanographic Institution, Woods Hole, MA 02543, - - 2014
Both observations and models suggest that large-scale coastal blooms of Alexandrium fundyense in the Gulf of Maine are seeded by deep-bottom cyst accumulation zones ("seed beds") where cysts germinate from the sediment surface or the overlying near-bottom nepheloid layers at water depths exceeding 100 m. The germling cells and their ...
Aaij R R Nikhef National Institute for Subatomic Physics, Amsterdam, The - - 2014
The first measurement of the effective lifetime of the B¯s0 meson in the decay B¯s0→Ds-Ds+ is reported using a proton-proton collision data set, corresponding to an integrated luminosity of 3  fb-1, collected by the LHCb experiment. The measured value of the B¯s0→Ds-Ds+ effective lifetime is 1.379±0.026±0.017  ps, where the uncertainties are statistical ...
Lee M P - - 2014
We demonstrate a new method for measuring the sedimentation of a single colloidal bead by using a combination of optical tweezers and a stereo microscope based on a spatial light modulator. We use optical tweezers to raise a micron-sized silica bead to a fixed height and then release it to ...
Lamy F F Alfred-Wegener-Institut (AWI) Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, - - 2014
Dust deposition in the Southern Ocean constitutes a critical modulator of past global climate variability, but how it has varied temporally and geographically is underdetermined. Here, we present data sets of glacial-interglacial dust-supply cycles from the largest Southern Ocean sector, the polar South Pacific, indicating three times higher dust deposition ...
Mercurio Philip P The University of Queensland, National Research Centre for Environmental Toxicology, 39 Kessels Road, Coopers Plains, Brisbane, QLD 4108, Australia; Australian Institute of Marine Science, PMB No. 3, Townsville, QLD 4810, Australia. Electronic address: - - 2014
Glyphosate is one of the most widely applied herbicides globally but its persistence in seawater has not been reported. Here we quantify the biodegradation of glyphosate using standard "simulation" flask tests with native bacterial populations and coastal seawater from the Great Barrier Reef. The half-life for glyphosate at 25°C in ...
Keijsers Joep G S JG Soil Physics and Land Management Group, Wageningen University, Wageningen, The - - 2014
Depending on the amount of aeolian sediment input and dune erosion, dune size and morphology change over time. Since coastal foredunes play an important role in the Dutch coastal defence, it is important to have good insight in the main factors that control these changes. In this paper the temporal ...
Davies-Colley Robert J RJ National Institute of Water and Atmospheric Research Ltd (NIWA), Hamilton, New Zealand E-mail: - - 2014
Fine sediment continues to be a major diffuse pollution concern with its multiple effects on aquatic ecosystems. Mass concentrations (and loads) of fine sediment are usually measured and modelled, apparently with the assumption that environmental effects of sediment are predictable from mass concentrations. However, some severe impacts of fine sediment ...
Xu Gang G 0000-0003-3408-0558 State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing 100875, China ; Center for Collaboration and Innovation in Brain and Learning Sciences, Beijing Normal University, Beijing 100875, - - 2014
In the last two decades, functional near-infrared spectroscopy (fNIRS) is getting more and more popular as a neuroimaging technique. The fNIRS instrument can be used to measure local hemodynamic response, which indirectly reflects the functional neural activities in human brain. In this study, an easily implemented way to establish DAQ-device-based ...
Dytrych T T Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, - - 2013
Results for ab initio no-core shell model calculations in a symmetry-adapted SU(3)-based coupling scheme demonstrate that collective modes in light nuclei emerge from first principles. The low-lying states of ^{6}Li, ^{8}Be, and ^{6}He are shown to exhibit orderly patterns that favor spatial configurations with strong quadrupole deformation and complementary low intrinsic ...
Da Lio Cristina C Department of ICEA, University of Padova, Via Loredan 20, Padova 35131, - - 2013
The presence and continued existence of tidal morphologies, and in particular of salt marshes, is intimately connected with biological activity, especially with the presence of halophytic vegetation. Here, we review recent contributions to tidal biogeomorphology and identify the presence of multiple competing stable states arising from a two-way feedback between ...
Hand Laurence H - - 2013
Surface water mineralization studies (to guideline OECD309) are a new requirement in EU agrochemical regulation and, therefore, industry has little experience with this test. The guideline allows for a number of options within the test design, notably the options to conduct the study under diffuse light and to include an ...
Kenworthy W J - - 2013
Using a calibrated bio-optical model we determined that the optical water quality conditions in several nitrogen-impaired embayments and in one unimpaired system were within the range of values known to support eelgrass growth. We also used the model to identify a range of light requirements for eelgrass (Zostera marina). Higher ...
Li Changjiang - - 2013
An efficient homotype Ag3 PO4 /BiVO4 heterojunction photocatalyst is described. Ag3 PO4 nanoparticles preferentially deposit on the highly active BiVO4 (040) facets by means of heterojunction construction together with morphology engineering. The Ag3 PO4 /BiVO4 photocatalyst shows high charge separation efficiency as well as enhanced visible-light response ability and thus ...
Seizilles G - - 2013
A viscous fluid flowing over plastic grains spontaneously generates single-thread channels. With time, these laminar analogues of alluvial rivers reach a reproducible steady state, showing a well-defined width and cross section. In the absence of sediment transport, their shape conforms with the threshold hypothesis which states that, at equilibrium, the ...
Dalai Swayamprava - - 2013
In the current study, two aspects concerning (i) the cytotoxicity potential of TiO2 nanoparticles (NPs) toward freshwater algal isolate Scenedesmus obliquus and (ii) the potential detoxification of NPs by the microalgae were assessed under light (UV-illumination) and dark conditions at low exposure levels (≤1μg/mL), using sterile freshwater as the test ...
Curić Mladjen - - 2013
Weather modification activities are performed mostly by cloud seeding. Some operational projects have been conducted for more than a half century and cover planetary scales. These activities have led to large amounts of seeding agents being deposited on the ground in precipitation. The main intent of this paper is to ...
Díez Ana I - - 2013
Thermus thermophilus transcriptional factor TtCarH belongs to a newly discovered class of photoreceptors that use 5'-deoxyadenosylcobalamin (AdoB12) as the light-sensing chromophore. Photoregulation relies on the repressor activity of AdoB12-bound oligomers in the dark, which light counteracts by oligomer disruption due to AdoB12 photolysis. In this study, we investigated TtCarH self-association ...
Quartino María Liliana - - 2013
Climate warming has been related to glacial retreat along the Western Antarctic Peninsula. Over the last years, a visible melting of Fourcade Glacier (Potter Cove, South Shetland Islands) has exposed newly ice-free hard bottom areas available for benthic colonization. However, ice melting produces a reduction of light penetration due to ...
Holland Charles W - - 2013
One of the difficulties in validating sediment models has been the lack of reliable low frequency dispersion measurements. A reflection method is presented that yields in situ dispersion without sediment disturbance over a broad range of frequencies and can explicitly disentangle frequency-dependent effects of vertical structure, e.g., layers and gradients. ...
Da Lio Cristina - - 2013
The presence and continued existence of tidal morphologies, and in particular of salt marshes, is intimately connected with biological activity, especially with the presence of halophytic vegetation. Here, we review recent contributions to tidal biogeomorphology and identify the presence of multiple competing stable states arising from a two-way feedback between ...
Collins Curtis A - - 2012
The use of moored ocean arrays for environmental acoustic measurements off Central California is discussed. A cabled array off Point Sur, CA, which was designed for long-range, low-frequency listening was used by NPS and collaborators from late 1997 through mid-2000 and provides examples of a wide range of activities including ...
Yuan Huanxiang - - 2012
Except for chemotherapy, surgery and radiotherapy, photodynamic therapy (PDT) as new therapy modality is already in wide clinic use for the treatment of various diseases. The major bottle neck of this technique is the requirement of outer light source, which always limits effective therapeutic of PDT to the lesions in ...
Tomaszewska Agnieszka - - 2012
The aim of this study was to provide the morphological and morphometric data of the supraorbital foramina or notches related to sex, side, and the climatic conditions where the population lived. It was hypothesized that the distribution of the occurrence and location of these openings depends on climatic conditions in ...
Davidson Kris - - 2012
Arising from A. Rest et al. 482, 375-378 (2012).During the years 1838-1858, the very massive star η Carinae became the prototype supernova impostor: it released nearly as much light as a supernova explosion and shed an impressive amount of mass, but survived as a star. In the standard interpretation, mass ...
Kaya N - - 2012
We studied white-light generation in water using spatially- structured beams of femtosecond radiation. By changing the transverse spatial phase of an initial Gaussian beam with a 1D spatial light modulator to that of an Hermite-Gaussian (HG<sub>n,m</sub>) mode, we were able to generate beams exhibiting phase discontinuities and steeper intensity gradients. ...
Moyers M - - 2012
Treatment of patients with beams of light ions (including protons) began in 1954. Despite the dosimetric advantages of these beams, 58 years later less than 1% of patients treated with radiation in the United States currently receive light ion teletherapy. This is primarily due to the large initial investment needed ...
Betzel G - - 2012
Purpose: To investigate whether rotational IMRT is more susceptible to organ motion than IMRT that uses fixed fields. Methods: RapidArc and sliding window IMRT treatment plans were each created for five lung and five pancreas cases. Dosimetric effects due to tumor motion were simulatedby incorporating sinusoidal couch motion into plans ...
Zhang P - - 2012
Purpose: To develop a robust optimization algorithm which incorporates a Calypso-guided gating strategy into the optimization process to maximize clinical target volume (CTV) coverage and organs at risk (OAR) sparing in the presence of intra-fractional motion. Method: In a computer simulation, intra-fractional motion traces from prior treatments with Calypso were ...
Han-Oh S - - 2012
Purpose: We introduce a novel technique for analyzing tumor-motion surrogate signals using Empirical Mode Decomposition (EMD) and Hilbert-Huang Transformation (HHT). Methods: The tumor-motion surrogate signals were acquired (with RPM/Varian), from 20 lung-cancer patients in free-breathing method and its data were decomposed into Intrinsic Mode Functions (IMFs) using EMD. HHT was ...
Wilken Tobias - - 2012
The best spectrographs are limited in stability by their calibration light source. Laser frequency combs are the ideal calibrators for astronomical spectrographs. They emit a spectrum of lines that are equally spaced in frequency and that are as accurate and stable as the atomic clock relative to which the comb ...
Metildi Cristina A CA Department of Surgery, University of California San Diego, La Jolla, CA 92093-0987, - - 2012
The aim of this study was to improve fluorescence laparoscopy of pancreatic cancer in an orthotopic mouse model with the use of a light-emitting diode (LED) light source and optimal fluorophore combinations. Human pancreatic cancer models were established with fluorescent FG-RFP, MiaPaca2-GFP, BxPC-3-RFP, and BxPC-3 cancer cells implanted in 6-week-old ...
Jønsson Knud A - - 2012
Adaptive radiation is the rapid diversification of a single lineage into many species that inhabit a variety of environments or use a variety of resources and differ in traits required to exploit these. Why some lineages undergo adaptive radiation is not well-understood, but filling unoccupied ecological space appears to be ...
Takada Orie - - 2012
Most musical instruments exhibit complex patterns of sound radiation, which change with direction, played pitch, and many other factors. The same holds true for the body of a singer, regarded as an instrument, singing with her or his voice but activating also parts of the chest, neck, face, etc. The ...
Loeb Abraham - - 2012
Existing and planned optical telescopes and surveys can detect artificially illuminated objects, comparable in total brightness to a major terrestrial city, at the outskirts of the Solar System. Orbital parameters of Kuiper belt objects (KBOs) are routinely measured to exquisite precisions of<10(-3). Here, we propose to measure the variation of ...
Glaser Adam K - - 2012
Radiation from a linear accelerator induces Cherenkov emission in tissue, which has recently been shown to produce biochemical spectral signatures that can be interpreted to estimate tissue hemoglobin and oxygen saturation or molecular fluorescence from reporters. The Cherenkov optical light levels are in the range of 10(-6) to 10(-9) W/cm2, ...
Stone Alan J AJ Centre for Advanced Medical Imaging, St. James's Hospital/Trinity College, University of Dublin, Dublin, Ireland. - - 2012
Diffusion-weighted whole-body imaging with background body signal subtraction was introduced as a qualitative approach to detecting metastases in the body. A liver-mimicking phantom with embedded tumours that could be moved to replicate respiratory motion was developed to assess its ability to accurately quantify ADC values. Mean tumour ADC values were ...
García-Robledo Emilio - - 2012
Macroalgae blooms, a frequent consequence of eutrophication in coastal areas, affect the photosynthetic activity of sediments dominated by microphytobenthos (MPB). Light spectra, steady-state (after 1 h) microprofiles of O2 , gross photosynthesis (Pg ), community respiration in light (RL ) and net community photosynthesis (Pn ) were measured in diatom- and ...
El Ketara Mohamed - - 2012
We report on the observation of self-induced nonlinear spin-orbit interaction of light driven by Kerr orientational optical nonlinearities in liquid crystals. It consists of the self-induced spin-to-orbital nonlinear conversion for the angular momentum of light. The optical angular momentum conversion is driven by the creation of a topological liquid crystal ...
Tanner Christine - - 2012
Minimal invasive tumor therapies are getting ever more sophisticated with novel treatment approaches and new devices allowing for improved targeting precision. Applying these effectively requires precise localization of the structures of interest. Vital processes, such as respiration and heartbeat, induce organ motion, which cannot be neglected during therapy. This review ...
Ellison Joanna C JC School of Geography and Environmental Studies, University of Tasmania, Locked Bag 1376, Launceston 7250, Tasmania, Australia. - - 2012
Intertidal mangrove ecosystems are sensitive to climate change impacts, particularly to associated relative sea level rise. Human stressors and low tidal range add to vulnerability, both characteristics of the Doula Estuary, Cameroon. To investigate vulnerability, spatial techniques were combined with ground surveys to map distributions of mangrove zones, and compare ...
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