Search Results
Results 1 - 50 of 2567
1 2 3 4 5 6 7 8 9 10 >
Zonta Zivko J - - 2014
The procedure commonly used for the assessment of the parameters included in activated sludge models (ASMs) relies on the estimation of their optimal value within a confidence region (i.e. frequentist inference). Once optimal values are estimated, parameter uncertainty is computed through the covariance matrix. However, alternative approaches based on the ...
T'jollyn Huybrecht H Laboratory of Medical Biochemistry and Clinical Analysis, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000, Ghent, - - 2014
To predict the tramadol in vivo pharmacokinetics in adults by using in vitro metabolism data and an in vitro-in vivo extrapolation (IVIVE)-linked physiologically-based pharmacokinetic (PBPK) modeling and simulation approach (Simcyp®). Tramadol metabolism data was gathered using metabolite formation in human liver microsomes (HLM) and recombinant enzyme systems (rCYP). Hepatic intrinsic ...
Simonov Alexandr Nikolaevich - - 2014
Many electrode processes that approach the 'reversible' (infinitely fast) limit under voltammetric conditions have been inappropriately analysed by comparison of experimental data and theory derived from the 'quasi-reversible' model. Simulations based on 'reversible' and 'quasi-reversible' models have been fitted to an extensive series of a.c. voltammetric experiments undertaken at macrodisk ...
Lang Jianlei J Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, - - 2014
The on-road vehicular emission in China from 1999 to 2011 was estimated, based on the emission factors of vehicles with different emission standards calculated by the COPERT model. The CO, NMVOC, NOX, BC and OC emissions changed from 19.7 Tg, 4.4 Tg, 2.3 Tg, 47.1 Gg and 74.4 Gg in ...
van Velden Floris H P FH Department of Radiology & Nuclear Medicine, VU University Medical Center, PO Box 7057, 1007 MB, Amsterdam, The Netherlands, - - 2014
This study was conducted to directly compare the high-resolution research tomograph (HRRT) (high-resolution brain) and HR+ (standard whole-body) positron emission tomography (PET) only scanners for quantitative brain studies using three tracers with vastly different tracer distributions. Healthy volunteers underwent successive scans on HR+ and HRRT scanners (in random order) using ...
Majkut Joseph D JD Atmospheric and Oceanic Sciences Program, Department of Geosciences, Princeton University, Princeton, NJ 08544, USA - - 2014
The Southern Ocean is critically important to the oceanic uptake of anthropogenic CO2. Up to half of the excess CO2 currently in the ocean entered through the Southern Ocean. That uptake helps to maintain the global carbon balance and buffers transient climate change from fossil fuel emissions. However, the future ...
Jambor Ivan I Department of Diagnostic Radiology, University of Turku, Turku, - - 2014
To evaluate monoexponential, stretched exponential, kurtosis, and biexponential models for diffusion-weighted imaging (DWI) of normal prostate and prostate cancer (PCa), using b-values up to 2000 s/mm(2) , in terms of fitting quality and repeatability. Eight healthy volunteers and 16 PCa patients underwent a total of four repeated 3T DWI examinations ...
Fransson Martin N MN Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden - - 2014
The health effects of low-level chronic exposure to cadmium are increasingly recognized. To improve the risk assessment, it is essential to know the relation between cadmium intake, body burden and biomarker levels of cadmium. We combined a physiologically-based toxicokinetic (PBTK) model for cadmium with a data set from healthy kidney ...
Dong Yongsheng - - 2014
Statistical modeling of wavelet subbands has frequently been used for image recognition and retrieval. However, traditional wavelets are unsuitable for use with images containing distributed discontinuities, such as edges. Shearlets are a newly developed extension of wavelets that are better suited to image characterization. Here, we propose novel texture classification ...
Allik Jüri J Department of Psychology, University of Tartu, Näituse 2, Tartu, 50409, Estonia, - - 2014
In a bull's-eye acuity task, we asked observers to identify in which direction, to the left or the right, a spot had been displaced from the center of a circle and-after that, in the same trial-to detect which of the two presented circles contained the displaced spot. Replicating our previous ...
Merisaari Harri H Department of Information Technology, University of Turku, Turku, Finland; Turku PET Centre, University of Turku, Turku, - - 2014
To find optimal b-value distributions for monoexponential, stretched exponential, kurtosis, and biexponential models of prostate cancer (PCa) diffusion-weighted imaging (DWI) using simulations and repeated DWI examinations. Simulations aiming to minimize estimation accuracy error were performed. Ten PCa patients underwent in total four repeated 3-tesla DWI examinations using 12 equally spaced ...
Minati Ludovico L Scientific Department, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy; MR-Lab, Center for Mind/Brain Science, University of Trento, Italy. Electronic address: - - 2014
An outstanding issue in graph-based analysis of resting-state functional MRI is choice of network nodes. Individual consideration of entire brain voxels may represent a less biased approach than parcellating the cortex according to pre-determined atlases, but entails establishing connectedness for 1(9)-1(11) links, with often prohibitive computational cost. Using a representative ...
Reid Matthew C - - 2014
Pit latrines are an important form of decentralized wastewater management, providing hygienic and low-cost sanitation for approximately one-quarter of the global population. Latrines are also major sources of the greenhouse gas methane (CH4) from the anaerobic decomposition of organic matter in pits. In this study we develop a spatially-explicit approach ...
Ingrao Carlo C Department of Industrial Engineering, University of Catania, Viale A. Doria 6, 95125 Catania, Italy. Electronic address: - - 2014
A screening of Life Cycle Assessment for the evaluation of the damage arising from the production of 1 kg of recycled Polyethylene Terephthalate (RPET) fibre-based panel for building heat insulation was carried out according to the ISO 14040:2006 and 14044:2006. All data used were collected on site based on observations ...
Hasheminassab Sina S University of Southern California, Department of Civil and Environmental Engineering, Los Angeles, CA, - - 2014
Positive Matrix Factorization (PMF) was utilized to quantify sources of ambient PM2.5 in central Los Angeles (LA) and Rubidoux, using the Speciation Trends Network data, collected between 2002 and 2013. Vehicular emissions (including gasoline and diesel vehicles) were the second major contributor to PM2.5, following secondary aerosols, with about 20% ...
Wilks Moses Q MQ Department of Biomathematics, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California; and Department of Molecular and Medical Pharmacology, David Geffen School of Medicine the University of California-Los Angeles, Los Angeles, California - - 2014
Large-molecule tracers, such as labeled antibodies, have shown success in immuno-PET for imaging of specific cell surface biomarkers. However, previous work has shown that localization of such tracers shows high levels of heterogeneity in target tissues, due to both the slow diffusion and the high affinity of these compounds. In ...
Ni Mingjiang M State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, - - 2014
Black carbon (BC) produced from open burning (OB) and controlled combustion (CC) is a range of carbonaceous products of incomplete combustion of biomass and fossil fuel, and is deemed as one of the major contributors to impact global environment and human health. BC has a strong relationship with POPs, in ...
Zhu Xiaozhang - - 2014
To improve the model-based inversion performance of microwave induced thermoacoustic tomography for breast tumor imaging, an active adjoint modeling (AAM) method is proposed. It aims to provide a more realistic breast acoustic model used for tumor inversion as the background by actively measuring and reconstructing the structural heterogeneity of human ...
Than Trung Duc TD School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, New South Wales 2522, - - 2014
Over the last decade, wireless capsule endoscope has been the tool of choice for noninvasive inspection of the gastrointestinal tract, especially in the small intestine. However, the latest clinical products have not been equipped with a sufficiently accurate localization system which makes it difficult to determine the location of intestinal ...
Abdel-Aal M M School of Engineering Design and Technology, University of Bradford, BD7 1PD, UK E-mail: - - 2014
Modelling of wastewater temperatures along a sewer pipe using energy balance equations and assuming steady-state conditions was achieved. Modelling error was calculated, by comparing the predicted temperature drop to measured ones in three combined sewers, and was found to have an overall root mean squared error of 0.37 K. Downstream ...
Sun Zhan-Li - - 2014
The reliable and accurate identification of cancer categories is crucial to a successful diagnosis and a proper treatment of the disease. In most existing work, samples of gene expression data are treated as one-dimensional signals, and are analyzed by means of some statistical signal processing techniques or intelligent computation algorithms. ...
Müller J J Centre for Mathematical Sciences, TU München, Boltzmannstraße 3, D-85758 Garching, Germany; Institute of Computational Biology, Helmholtzzentrum München, D-85764 Neuherberg, Germany. Electronic address: - - 2014
We consider the uptake of various carbon sources by microorganisms based on four fundamental assumptions: (1) the uptake of nutrient follows a saturation characteristics (2) substrate processing has a benefit but comes at costs of maintaining the process chain (3) substrate uptake is controlled and (4) evolution optimized the control ...
Glaser Alexander A Department of Mechanical and Aerospace Engineering, Princeton University, E-Quad, Olden Street, Princeton, New Jersey 08544, - - 2014
The verification of nuclear warheads for arms control involves a paradox: international inspectors will have to gain high confidence in the authenticity of submitted items while learning nothing about them. Proposed inspection systems featuring 'information barriers', designed to hide measurements stored in electronic systems, are at risk of tampering and ...
Garcia-Menendez Fernando F School of Civil and Environmental Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332, USA. Electronic address: - - 2014
Air quality forecasts generated with chemical transport models can provide valuable information about the potential impacts of fires on pollutant levels. However, significant uncertainties are associated with fire-related emission estimates as well as their distribution on gridded modeling domains. In this study, we explore the sensitivity of fine particulate matter ...
Zhou Feng - - 2014
The amount and geographic distribution of N2O emissions over China remain largely uncertain. In this study, county-level and 0.1×°0.1° gridded anthropogenic N2O emission inventories for China (PKU-N2O) in 2008 are developed based on high-resolution activity data and regional emission factors (EFs) and parameters. These new estimates are compared with previous ...
Batool Nazre - - 2014
Facial retouching is widely used in media and entertainment industry. Professional software usually require a minimum level of user expertise to achieve the desirable results. In this paper, we present an algorithm to detect facial wrinkles/imperfection. We believe that any such algorithm would be amenable to facial retouching applications. The ...
Yan H H HH Air Quality Studies, Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong - - 2014
During the implementation of Montreal Protocol, emission inventories of halocarbons in different sectors at regional scale are fundamental to the formulation of relevant management strategy and inspection of the implementation efficiency. This study investigated the emission profile of halocarbons used in the mobile vehicle air conditioning system, the leading sector ...
White Lee C LC Department of Psychology, Swansea University, United Kingdom. Electronic address: - - 2014
Decisions can sometimes have a constructive role, so that the act of, for example, choosing one option over another creates a preference for that option (e.g., Ariely & Norton, 2008; Payne, Bettman, & Johnson, 1993; Sharot, Velasquez, & Dolan, 2010; Sherman, 1980). In this work we explore the constructive role ...
Hu Jiangchuan - - 2014
As input to a winter use plan, activity, fuel use, and tailpipe exhaust emissions of over-snow vehicles (OSV), including five snow coaches and one snowmobile, were measured on a designated route in Yellowstone National Park (YNP). Engine load was quantified in terms of Vehicle Specific Power (VSP), which is a ...
Pu Yichao Y MOE Key Laboratory of Road and Traffic Engineering, Tongji University, Shanghai 201804, - - 2014
Urban vehicle emission models have been utilized to calculate pollutant concentrations at both microscopic and macroscopic levels based on vehicle emission rates which few researches have been able to validate. The objective of our research is to estimate urban roadside emissions and calibrate it with in-field measurement data. We calculated ...
Ferchichi A A ENIT-LAMSIN, Université de Tunis El Manar, Belvedere, BP 37 , 1002, Tunis, Tunisia, - - 2014
We study the viability domains of bio-economic constraints for fishing model of hermaphrodite population, displaying three stages, juvenile, female and male. The dynamic of this model is subject to two constraints: an ecological constraint ensuring the stock perennity, and an economic constraint ensuring a minimum revenue for fishermen. Using viability ...
Diana Michele M IRCAD Research Institute against Cancer of the Digestive System and IHU Minimally Invasive Image-Guided Surgical Institute, 1, place de l'Hôpital, 67095, Strasbourg, France, - - 2014
Surgeons currently rely on visual clues to estimate the presence of sufficient vascularity for safe anastomosis. We aimed to assess the accuracy of endoluminal confocal laser endomicroscopy (CLE) and laparoscopic fluorescence-based enhanced reality (FLER), using near-infrared imaging and fluorescence from injected Indocyanine Green, to identify the transition from ischemic to ...
Wan Yanli - - 2014
This paper proposes a quasi-dense matching approach to the automatic acquisition of camera parameters, which is required for recovering 3-D information from 2-D images. An affine transformation-based optimization model and a new matching cost function are used to acquire quasi-dense correspondences with high accuracy in each pair of views. These ...
Liu Zhaoyang Z School of Environment, Beijing Normal University, Beijing 100875, China; Department of Land Economy, University of Cambridge, Cambridge CB3 9EP, - - 2014
China's iron and steel sector is faced with increasing pressure to control both local air pollutants and CO2 simultaneously. Additional policy instruments are needed to co-control these emissions in this sector. This study quantitatively evaluates and compares two categories of emission reduction instruments, namely the economic-incentive (EI) instrument of a ...
Pastuszak Marianna M National Marine Fisheries Research Institute, ul. Kołłątaja 1, 81-332 Gdynia, - - 2014
Poland, with its large drainage area, with 50% contribution of agricultural land and 45% contribution of population to overall agricultural land area and population number in the Baltic catchment, is the largest exporter of riverine nitrogen (N) and phosphorus (P) to the sea. The economic transition has resulted in substantial, ...
Zheng Liang - - 2014
Visual matching is a crucial step in image retrieval based on the Bag-of-Words (BoW) model. In the baseline method, two keypoints are considered as a matching pair if their SIFT descriptors are quantized to the same visual word. However, the SIFT visual word has two limitations. First, it loses most ...
Sweetapple Christine C Centre for Water Systems, College of Engineering, Mathematics and Physical Sciences, University of Exeter, North Park Road, Exeter, Devon EX4 4QF, United Kingdom. Electronic address: - - 2014
This research investigates the effects of adjusting control handle values on greenhouse gas emissions from wastewater treatment, and reveals critical control handles and sensitive emission sources for control through the combined use of local and global sensitivity analysis methods. The direction of change in emissions, effluent quality and operational cost ...
Francescato M P MP Department of Medical and Biological Sciences, University of Udine, 33100 - UDINE, ITALY. Electronic address: - - 2014
Kinetic parameters for pulmonary O2 uptake at exercise onset are estimated by non-linear regression on repeated responses assembled together. The native data contain the information, thus the "stacking" of the responses should provide correct values and uncertainties. Kinetic parameters and corresponding uncertainties (computed from the asymptotic standard errors; ASE) were ...
Rey M D MD Chemical Engineering Department, University of Alicante, P.O. Box 99, E-03080 Alicante, Spain. Electronic address: - - 2014
PCDD/F emissions from three light-duty diesel vehicles - two vans and a passenger car - have been measured in on-road conditions. We propose a new methodology for small vehicles: a sample of exhaust gas is collected by means of equipment based on United States Environmental Protection Agency (U.S. EPA) method ...
Narita Atsushi A Department of Physiology, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan, - - 2014
A database is an important factor in the statistical analysis of myocardial scintigraphy. Our aim in this study was to verify the validity of the threshold method using phantoms and to create a clinical database using this method. Since this method involves artificially excluding a low count area on a ...
Falangola Maria F MF Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA; Center for Biomedical Imaging, Medical University of South Carolina, Charleston, SC, USA; Department of Neurosciences, Medical University of South Carolina, Charleston, SC, - - 2014
The cuprizone mouse model is well established for studying the processes of both demyelination and remyelination in the corpus callosum, and it has been utilized together with diffusion tensor imaging (DTI) to investigate myelin and axonal pathology. Although some underlying morphological mechanisms contributing to the changes in diffusion tensor (DT) ...
Chang Pao-Erh Paul PE Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu, - - 2014
Emissions of volatile organic compounds (VOCs) are most frequent environmental nuisance complaints in urban areas, especially where industrial districts are nearby. Unfortunately, identifying the responsible emission sources of VOCs is essentially a difficult task. In this study, we proposed a dynamic approach to gradually confine the location of potential VOC ...
Schain Martin M Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden, - - 2014
Manual definition of regions of interest (ROIs) has been considered the reference standard method in PET data evaluation. The method is labor-intensive, prone to rater bias and may show low reproducibility. Automated template-based methods for ROI definition may overcome these limitations. The aim of this study was to validate the ...
Hou X X Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, - - 2014
The cyclotron-based (100)Mo(p,2n)(99m)Tc reaction has been proposed as an alternative method for solving the shortage of (99m)Tc. With this production method, however, even if highly enriched molybdenum is used, various radioactive and stable isotopes will be produced simultaneously with (99m)Tc. In order to optimize reaction parameters and estimate potential patient ...
van Middelaar C E CE Animal Production Systems Group, Wageningen University, PO Box 338, 6700 AH Wageningen, the Netherlands. Electronic address: - - 2014
Current decisions on breeding in dairy farming are mainly based on economic values of heritable traits, as earning an income is a primary objective of farmers. Recent literature, however, shows that breeding also has potential to reduce greenhouse gas (GHG) emissions. The objective of this paper was to compare 2 ...
Pombi Marco - - 2014
Monitoring densities of adult mosquito populations is a major challenge in efforts to evaluate the epidemiology of mosquito-borne diseases, and their response to vector control interventions. In the case of malaria, collection of outdoor-resting Anophelines is rarely incorporated into surveillance and control, partially due to the lack of standardized collection ...
Elgowainy Amgad - - 2014
This paper describes the development of (1) a formula correlating the variation in overall refinery efficiency with crude quality, refinery complexity, and product slate; (2) a methodology for calculating energy and greenhouse gas (GHG) emission intensities and processing fuel shares of major U.S. refinery products. Using linear programming (LP) modeling ...
Shou Haochang H Department of Biostatistics, Johns Hopkins University, 615 N. Wolfe St., Baltimore, MD 21205, - - 2014
Resting-state functional magnetic resonance imaging (rs-fMRI) is used to investigate synchronous activations in spatially distinct regions of the brain, which are thought to reflect functional systems supporting cognitive processes. Analyses are often performed using seed-based correlation analysis, allowing researchers to explore functional connectivity between data in a seed region and ...
Earnshaw Mark R MR Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, - - 2014
The lifecycle, sources and fate of perfluorooctane sulfonate (PFOS) continue to generate scientific and political interest, particularly since PFOS was listed by the Stockholm Convention and largely restricted in Europe. It continues to be detected in aquatic environments, with only limited studies into the on-going sources. This paper explores PFOS ...
Xu Peng P Key Laboratory for NeuroInformation of Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of - - 2014
The diagnosis of mild cognitive impairment (MCI) is very helpful for early therapeutic interventions of Alzheimer's disease (AD). MCI has been proven to be correlated with disorders in multiple brain areas. In this paper, we used information from resting brain networks at different EEG frequency bands to reliably recognize MCI. ...
1 2 3 4 5 6 7 8 9 10 >