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Results 1 - 50 of 2014
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Sudhagar P P Department of Energy Engineering, Hanyang University, Seoul 133-791, Korea. upaik@hanyang.ac.kr - - 2014
We demonstrate one-step gold nanoparticle (AuNP) coating and the surface nitridation of TiO2 nanowires (TiO2-NWs) to amplify visible-light photon reflection. The surface nitridation of TiO2-NW arrays maximizes the anchoring of AuNPs, and the subsequent reduction of the band gap energy from 3.26 eV to 2.69 eV affords visible-light activity. The ...
Wang J C JC Texas Tech University Health Sciences Center School of - - 2014
Objective: To determine noise intensity during middle-ear aspiration in order to evaluate whether levels can be potentially harmful. Methods: In this prospective, observational study, middle-ear effusion was aspirated following myringotomy using a suction instrument with a probe tube microphone. Sound pressure levels and duration were measured, and frequency domain analysis ...
Zhou Chao C Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China. - - 2014
Black Nb(4+) self-doped K4Nb6O17 microspheres were prepared for the first time through a facile UV light photoreduction method. By the introduction of Nb(4+), the defective K4Nb6O17 can harvest the full spectrum of visible light as well as near-infrared light. The black K4Nb6O17 microspheres showed improved visible-light-driven photocatalytic H2 production activity. ...
Rajaambal Sivaraman S Catalysis Division, National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India. - - 2014
The highly desirable combination of the visible light absorption properties of In1-xGaxN Quantum dots (QD) along with the multifunctionality of ZnO into a single integrated material was prepared for solar harvesting. This is the first report on InGaN QD integrated with ZnO (InGaN@ZnO), synthesized by a highly reproducible, simple combustion ...
Chen Shixiong - - 2014
The interference between the incoming sound wave and the acoustic energy reflected by the tympanic membrane (TM) forms a standing wave in human ear canals. The existence of standing waves causes various problems when measuring otoacoustic emissions (OAEs) that are soft sounds closely related with the functional status of the ...
Swanepoel De Wet DW * Department of Speech-Language Pathology and Audiology , University of Pretoria, Pretoria , South - - 2014
Objective: To determine if a smartphone application could be used as a calibrated screening audiometer with real-time noise monitoring for school screening using automated test sequences. Design: The investigation comprised three studies. Study 1 evaluated calibration accuracy across four Samsung S5301 smartphones (Android v4.0.4) using commercial Sennheiser HD202 headphones. Study ...
Narayanan M M MM Non-destructive Evaluation Division, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamil Nadu, - - 2014
An absolute methodology has been developed for quantification of misalignment of an ultrasonic transducer using a corner-cube retroreflector. The amplitude based and the time of flight (TOF) based C-scans of the reflector are obtained for various misalignments of the transducer. At zero degree orientation of the transducer, the vertical positions ...
Wilms M M Matthias Wilms, Institute of Medical Informatics, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany, E-mail: - - 2014
Objectives: A major problem associated with the irradiation of thoracic and abdominal tumors is respiratory motion. In clinical practice, motion compensation approaches are frequently steered by low-dimensional breathing signals (e.g., spirometry) and patient-specific correspondence models, which are used to estimate the sought internal motion given a signal measurement. Recently, the ...
Villegas Eloy A EA From Laboratorio de Optica (Villegas, Alcon, Artal), Departamento de Física, Universidad de Murcia, and Servicio de Oftalmología (Rubio, Marín), Hospital Universitario Virgen de la Arrixaca El Palmar, Murcia, Spain. Electronic address: - - 2014
To evaluate efficacy, predictability, and stability of refractive treatments using light-adjustable intraocular lenses (IOLs). University Hospital Virgen de la Arrixaca, Murcia, Spain. Prospective nonrandomized clinical trial. Eyes with a light-adjustable IOL (LAL) were treated with spatial intensity profiles to correct refractive errors. The effective changes in refraction in the light-adjustable ...
King Daniel - - 2014
An empirically based peak-detection technique is described for statistically analyzing single ultrasound contrast agent collapses. It is shown that microbubbles with postexcitation collapse initially exhibit a stronger principal response on average than those without postexcitation, and that lower insonifying frequencies lead to postexcitation signals which have greater separation from their ...
Bezat Marie-Céline MC PSA Peugeot-Citroen, 2 route de Gisy 78943 Velizy-Villacoublay, - - 2014
This article describes the first part of a study aiming at adapting the mechanical car door construction to the drivers' expectancies in terms of perceived quality of cars deduced from car door sounds. A perceptual cartography of car door sounds is obtained from various listening tests aiming at revealing both ...
Wu Liang L The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi' an Jiaotong University, Xi' an 710049, People's Republic of - - 2014
Understanding the sound transmission of the neck tissue is necessary and important in areas such as vocal function evaluation and electrolarynx improvement. In this paper, a simple method using a reflectionless tube was proposed to measure the neck frequency response function (NFRF) of ten normal subjects (five males and five ...
Lawless I M IM Biomechanics and Implants Research Group, Medical Device Research Institute, School of Computer Science, Engineering and Mathematics, Flinders University, - - 2014
Robotic biomechanics is a powerful tool for further developing our understanding of biological joints, tissues and their repair. Both velocity-based and hybrid force control methods have been applied to biomechanics but the complex and non-linear properties of joints have limited these to slow or stepwise loading, which may not capture ...
Gradolewski Dawid D Department of Mechatronics and High Voltage Engineering, Gdansk University of Technology, Gdansk, Poland. Electronic address: - - 2014
The main obstacle in development of intelligent autodiagnosis medical systems based on the analysis of phonocardiography (PCG) signals is noise. The noise can be caused by digestive and respiration sounds, movements or even signals from the surrounding environment and it is characterized by wide frequency and intensity spectrum. This spectrum ...
Yu Hong H Department of Otolaryngology, Head and Neck Surgery, First Hospital of Jilin University , Changchun , - - 2014
Abstract Conclusion: Noise induced by drilling during cochleostomy is of high level and can cause acoustic trauma to the inner ear, particularly after the membranous labyrinth has been exposed. Our method utilizes non-invasive noise measurement and the equipment that is connected to the operative area can be sterilized, thus it ...
Beall Erik B EB Imaging Institute, Cleveland Clinic, 9500 Euclid Ave., Cleveland, OH 44195, USA. Electronic address: - - 2014
Head motion in functional MRI and resting-state MRI is a major problem. Existing methods do not robustly reflect the true level of motion artifact for in vivo fMRI data. The primary issue is that current methods assume motion is synchronized to the volume acquisition and thus ignore intra-volume motion. This ...
Till Ugo U Université de Toulouse, UPS/CNRS, IMRCP, 118 route de Narbonne, 31062, Toulouse Cedex 9, - - 2014
Polymersomes formed from amphiphilic block copolymers, such as poly(ethyleneoxide-b-ε-caprolactone) (PEO-b-PCL) or poly(ethyleneoxide-b-methylmethacrylate), were characterized by asymmetrical flow field-flow fractionation coupled with quasi-elastic light scattering (QELS), multi-angle light scattering (MALS), and refractive index detection, leading to the determination of their size, shape, and molecular weight. The method was cross-examined with more ...
Moretti Jared D JD Pyrotechnics Technology & Prototyping Division, US Army, RDECOM-ARDEC, Picatinny Arsenal, NJ 07806-5000, Fax: (+1) 973-724-7535 - - 2014
The development of perchlorate-free M662 40 mm illuminating pyrotechnic compositions is described. On the bases of cost, performance, and sensitivity, potassium periodate was determined to be most effective potassium perchlorate replacement in the compositions tested. The optimal periodate-based composition exceeded the performance of the perchlorate-containing control, exhibited low sensitivity values to ...
J Freeston F aUniversity of Sydney, Cumberland Campus, 75 East Street, Lidcombe, NSW, 1825 - - 2014
Understanding factors that influence throwing speed and accuracy is critical to performance in baseball. Shoulder proprioception has been implicated in the injury risk of throwing athletes but no such link has been established with performance outcomes. The purpose of this study was to describe any relation between shoulder proprioception acuity ...
Sharma Priyanka P Z. H. College of Engineering and Technology, Aligarh Muslim University, Aligarh, Uttar Pradesh, - - 2014
The detection of nonconvulsive seizures (NCSz) is a challenge because of the lack of physical symptoms, which may delay the diagnosis of the disease. Many researchers have reported automatic detection of seizures. However, few investigators have concentrated on detection of NCSz. This article proposes a method for reliable detection of ...
Wang Bo - - 2014
We propose and realize a simple technique to measure the tiny spin Hall effect of light from the ratio of the minimum and the maximum intensities along two cross-polarization directions, without the requirement of a position-sensitive detector in the conventional weak measurement. Furthermore, the weak intensity ratio is dramatically amplified ...
Gao Peng - - 2014
In this Letter, we propose a method for retrieving the phase of a wavefront from the diffraction patterns recorded when the object is sequentially illuminated by spatially modulated light. For wavefronts having a smooth phase, the retrieval is achieved by using a deterministic method. When the phase has discontinuities, an ...
Pizá Alvaro G AG Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, and Departamento de Bioingeniería, Facultad de Ciencias Exactas y Tecnología, UNT. Av. Independencia 1800, 4000-San Miguel de Tucumán, Argentina; Laboratorio de Medios e Interfases (LAMEIN), Universidad Nacional de Tucumán, Argentina. Electronic address: - - 2014
Often, the first problem that the neuroscientist must face is to determine if a specific stimulus set applied to biological system produces specific, precise and well differentiated responses. New Method: In the present study we have proposed four discriminability measures to evaluate the feasibility of differentiating experimental conditions: Information measures ...
Bagheri Abdollah A Laboratory for Nondestructive Evaluation and Structural Health Monitoring Studies, Department of Civil and Environmental Engineering, University of Pittsburgh, 3700 O'Hara Street, Pittsburgh, PA, 15261, - - 2014
The processing of biosignals is increasingly being utilized in ambulatory situations in order to extract significant signals' features that can help in clinical diagnosis. However, this task is hampered by the fact that biomedical signals exhibit a complex behavior characterized by strong nonlinear and non-stationary properties that cannot always be ...
Krause David A DA Department of Physical Medicine and Rehabilitation, Program in Physical Therapy, Mayo Clinic College of Medicine, 200 1st Avenue SW, Rochester, MN, 550905, USA, - - 2014
Assessment of hip internal rotation (IR) is a critical element in the evaluation of a painful hip, yet there currently exists no consistent method of determining this measurement. The purpose of this study is to report the intra-rater and inter-rater reliability of active and passive hip IR measurement using a ...
Yan Zengqiang - - 2014
Three-dimensional reconstruction of a dynamic object based on the structured light (SL) technique has attracted intensive research. Since a single projector only covers a limited area of the scene, multiple projectors should be employed simultaneously to extend the imaging area for a 3D object. However, patterns projected by different projectors ...
Baczynska K A KA Public Health England, Centre for Radiation, Chemical and Environmental Hazards, Chilton, Didcot, Oxfordshire OX11 0RQ, UK - - 2014
The methods of the dark signal determination by direct contemporaneous measurements using a light spectrum and modelling of the dark signal based on the dark signal characterisation data were discussed. These techniques were tested with two charge-couple detectors (CCD) array spectroradiometers used in solar UVR measurements. The sensitivity of both ...
Zhou Yangzhong Y 1] Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, Pennsylvania, USA. [2] Department of Neurology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA. [3] Tsinghua University Medical School, Beijing, - - 2014
This article describes a method to quantify the movements of larval zebrafish in multiwell plates, using the open-source MATLAB applications LSRtrack and LSRanalyze. The protocol comprises four stages: generation of high-quality, flatly illuminated video recordings with exposure settings that facilitate object recognition; analysis of the resulting recordings using tools provided ...
Xu Tailin - - 2014
The use of the ultrasound field for rapid and reversible control of the movement of bubble-propelled chemically-powered PEDOT/Ni/Pt microengines is demonstrated. Such operation reflects the ultrasound-induced disruption of normal bubble evolution and ejec-tion, essential for efficient propulsion of catalytic micro-tubular engines. It offers precise speed control, with sharp increases and ...
Francart Tom T KU Leuven, Department of Neurosciences, ExpORL, O&N2, Herestraat 49 Bus 721, 3000, Leuven, Belgium, - - 2014
Interaural timing cues are important for sound source localization and for binaural unmasking of speech that is spatially separated from interfering sounds. Users of a cochlear implant (CI) with residual hearing in the non-implanted ear (bimodal listeners) can only make very limited use of interaural timing cues with their clinical ...
de Cheveigné Alain A Laboratoire des Systèmes Perceptifs, UMR 8248, CNRS, France; Département d'Etudes Cognitives, Ecole Normale Supérieure, France; University College London, UK. Electronic address: - - 2014
We review a simple yet versatile approach for the analysis of multichannel data, focusing in particular on brain signals measured with EEG, MEG, ECoG, LFP or optical imaging. Sensors are combined linearly with weights that are chosen to provide optimal signal-to-noise ratio. Signal and noise can be variably defined to ...
Headrick Jason F JF Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, - - 2014
Objective-To use an inverse dynamics method to describe the motion of the canine pelvic limb in 3 dimensions. Animals-6 healthy adult dogs. Procedures-For each dog, 16 anatomic and tracking markers were used to define the center of rotation for the pelvic limb joints and a kinematic model was created to ...
Hu Xuemei - - 2014
Ultrafast sources and detectors have been used to record the time-resolved scattering of light propagating through macroscopic scenes. In the context of computational imaging, decomposition of this transient light transport (TLT) is useful for applications, such as characterizing materials, imaging through diffuser layers, and relighting scenes dynamically. Here, we demonstrate ...
Wang Hongwei H Department of Orthopedics, General Hospital of Shenyang Military Area Command of Chinese People's Liberation Army, Shenyang, Liaoning 110016, - - 2014
A large amount of biomechanical and clinical evidence from previous studies suggest the efficiency of the two different posterior lumber non-fusion methods, interspinous distraction device (ISDD) and facet screw fixation system (FSS), but the biomechanical comparison of ISDD and FSS has not been thoroughly clarified. In the current study, finite ...
Cai Yefeng Y State Key Laboratory of Acoustics and the Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China caiyefeng001@gmail.com, mingwu@mail.ioa.ac.cn, liuli7700@gmail.com, - - 2014
The acoustic contrast control (ACC) approach is applied to reproduce the focused sound in personal audio systems utilizing an array of loudspeakers. A time-domain design of ACC is developed here for broadband input signals, where a response differential term is introduced to control the frequency response. Based on experimental results ...
Siltanen Samuel S Aalto University School of Science, Department of Media Technology, P.O. Box 15500, FI-00076 Aalto, Finland Samuel.Siltanen@aalto.fi, Philip.Robinson@aalto.fi, Jukka.Saarelma@aalto.fi, Jukka.Pätynen@aalto.fi, Sakari.Tervo@aalto.fi, Lauri.Savioja@aalto.fi, - - 2014
Sound visualizations have been an integral part of room acoustics studies for more than a century. As acoustic measurement techniques and knowledge of hearing evolve, acousticians need more intuitive ways to represent increasingly complex data. Microphone array processing now allows accurate measurement of spatio-temporal acoustic properties. However, the multidimensional data ...
Li Beiwen - - 2014
A structured-light system with a binary defocusing technique has the potential to have more extensive application due to its high speeds, gamma-calibration-free nature, and lack of rigid synchronization requirements between the camera and projector. However, the existing calibration methods fail to achieve high accuracy for a structured-light system with an ...
Klein D D Helmholtz-Zentrum Berlin für Materialien und Energie, Institute Solar Fuels (E-IF), Hahn-Meitner-Platz 1, D-14109 Berlin, - - 2014
Contactless measurements of the lifetime of charge carriers are presented with varying ways of photo excitation: with and without bias light and pulsed and frequency modulated. These methods are applied to the study of the surface passivation of single crystalline silicon by a-SiNx:H and Al2O3 coatings. The properties of these ...
Del Rossi Gianluca - - 2014
Abstract Study objective. To compare the amount of segmental vertebral motion produced with the lateral recovery position and the HAINES technique when performed on cadavers with destabilized cervical spines. Methods. The cervical spines of 10 cadavers were surgically destabilized at the C5-C6 vertebral segment. Sensors from an electromagnetic tracking device ...
Guenser Geoffrey - - 2014
Determining the electrical stimulation levels is often a difficult and time-consuming task because they are normally determined behaviorally - a particular challenge when dealing with pediatric patients. The evoked stapedius reflex threshold and the evoked compound action potential have already been shown to provide reasonable estimates of the C- and ...
Zirn Stefan S University of Munich, Department of Otorhinolaryngology, Head and Neck Surgery, Marchioninistr 15, Munich D-81377, - - 2014
Click and chirp-evoked auditory brainstem responses (ABR) are applied for the estimation of hearing thresholds in children. The present study analyzes ABR thresholds across a large sample of children's ears obtained with both methods. The aim was to demonstrate the correlation between both methods using narrow band chirp and click ...
Schiecke K K Karin Schiecke, Institute of Medical Statistics, Computer Sciences and Documentation, Jena University Hospital, Friedrich Schiller University Jena, Bachstr. 18, 07740 Jena, Germany, E-mail: - - 2014
Introduction: This article is part of the Focus Theme of Methods of Information in Medicine on "Biosignal Interpretation: Advanced Methods for Neural Signals and Images". Objectives: The aim of this study was to compare rhythmicities in the quadratic phase coupling (QPC) in the tracé discontinue EEG patterns (TD) of premature ...
Ulku Cagatay Han CH Eaton-Peabody Laboratory, Massachusetts Eye and Ear Infirmary , Boston, MA , - - 2014
Abstract Conclusions: Reconstruction of the ossicular chain differentially affects the motion of the tympanic membrane (TM) and the stapes. Objectives: To determine the effect of different ossicular replacement procedures on the sound-induced motion of the TM and stapes. Methods: A combination of digital stroboscopic holography and laser Doppler vibrometry was ...
Svensson B J BJ 1 Faculty of Health Sciences, University of Sydney , Sydney, Australia - - 2014
Abstract Background: Detection of early lymphedema is important for effective treatment outcome and reduction of disease burden. The aims of this study were to determine normal inter-limb variance in the hand and four segments of the arm using bioimpedance spectroscopy (BIS) to provide diagnostic thresholds for detection of early lymphedema ...
Arif Omar - - 2014
We propose a method for tracking structures (e.g., ventricles and myocardium) in cardiac images (e.g., magnetic resonance) by propagating forward in time a previous estimate of the structures using a new physically motivated motion estimation scheme. Our method estimates motion by regularizing only within structures so that differing motions among ...
Piper T T Department of Light Microscopy, Laboratory for Applied Microscopy Research, Marienburgstr. 23, Bullay, Rheinland-Pfalz, - - 2014
Using the optical methods described, specimens can be observed with modified multimodal light microscopes based on interference contrast combined with phase contrast, dark- or bright-field illumination. Thus, the particular visual information associated with interference and phase contrast, dark- and bright-field illumination is joined in real-time composite images appearing in enhanced ...
Ammazzalorso F - - 2014
In particle therapy, the interplay between beam scanning and target motion during treatment delivery may result in dose deterioration. Interplay effects have been studied for targets exhibiting periodic respiratory motion, however, they are not well understood for irregular motion patterns, such as those exhibited by the prostate. In this note, ...
Pyschny Verena - - 2014
PURPOSE The objective of the study was to investigate the influence of noise (energetic) and speech (energetic plus informational) maskers on the head shadow (HS), squelch (SQ) and binaural summation (SU) effect in bilateral and bimodal CI users. METHOD Speech recognition was measured in the presence of either a competing ...
Finlay Judith A JA The Binding Site, Inc., San Diego - - 2014
Assays for immunoglobulin heavy chain-light chain (HLC) pairs called Hevylite® have recently been developed. These assays can be useful in patients with hard to interpret serum protein electrophoresis peaks. Measurement of the biological variation of clinical laboratory tests can help clinicians better interpret laboratory results. Serum samples were collected from ...
Melia U - - 2014
Introduction: This article is part of the Focus Theme of Methods of Information in Medicine on "Biosignal Interpretation: Advanced Methods for Neural Signals and Images". Objectives: An efficient way to investigate the neural basis of nociceptive responses is the analysis of the event-related brain potentials (ERPs). The main objective of ...
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