Browsing Scholarly Works, Civil and Environmental Engineering by Title
Now showing items 266-285 of 295
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Temperature Correction and Analysis of Pavement Skid Resistance Performance Based on RIOHTrack Full-Scale Track
(MDPI, 2020-08-28)The pavement skid resistance performance index is one of the most important indexes to ensure driving safety. Based on the test data of RIOHTrack full-scale track, this paper analyzes the decay law of pavement skid resistance ... -
Ten questions concerning the aerosolization and transmission of Legionella in the built environment
(2017-10)Legionella is a genus of pathogenic Gram-negative bacteria responsible for a serious disease known as legionellosis, which is transmitted via inhalation of this pathogen in aerosol form. There are two forms of legionellosis: ... -
Time-resolved flow dynamics and Reynolds number effects at a wall-cylinder junction
(Cambridge University Press, 2015-07-13)This study investigated the physics of separated turbulent flows near the vertical intersection of a flat wall with a cylindrical obstacle. The geometry imposes an adverse pressure gradient on the incoming boundary layer. ... -
Towards a Better Estimation of Inspection Intervals for Cracking Steel Railroad Bridges
(American Railway Engineering and Maintenance-of-Way Association, 2015-10-05)In order to best prioritize limited funds for railroad bridge capital and maintenance, it is important for the bridge engineer to have an accurate estimate of service life for existing steel bridges. In the context of the ... -
Towards a harmonized method for the global reconnaissance of multi-class antimicrobials and other pharmaceuticals in wastewater and receiving surface waters
(Elsevier Ltd, 2019-01-17)Antimicrobial resistance is a worldwide problem that is both pressing and challenging due to the rate at which it is spreading, and the lack of understanding of the mechanisms that link human, animal and environmental ... -
Towards sustainable wastewater treatment by using microbial fuel cells-centered technologies
(The Royal Society of Chemistry, 2013-11-28)Microbial fuel cells (MFCs) have been conceived and intensively studied as a promising technology to achieve sustainable wastewater treatment. However, doubts and debates arose in recent years regarding the technical and ... -
Toxicity of Particulate Matter from Incineration of Nanowaste
(The Royal Society of Chemistry, 2015-01-13)Disposal of some nanomaterial-containing waste by incineration and the subsequent formation of particulate matter (PM) along with hazardous combustion by-products are inevitable. The effect of nanomaterials on the toxicity ... -
Toxicity of Silver Nanoparticles at the Air-Liquid Interface
(Hindawi Publishing Corporation, 2013-01-01)Silver nanoparticles are one of the most prevalent nanomaterials in consumer products. Some of these products are likely to be aerosolized, making silver nanoparticles a high priority for inhalation toxicity assessment. ... -
Tracking of a Fluorescent Dye in a Freshwater Lake with an Unmanned Surface Vehicle and an Unmanned Aircraft System
(2018-01-09)Recent catastrophic events in our oceans, including the spill of toxic oil from the explosion of the Deepwater Horizon drilling rig and the rapid dispersion of radioactive particulates from the meltdown of the Fukushima ... -
Tracking reduction of water lead levels in two homes during the Flint Federal Emergency
(2020-05-01)A Federal Emergency was declared in Flint, MI, on January 16, 2016, 18-months after a switch to Flint River source water without phosphate corrosion control. Remedial actions to resolve the corresponding lead in water ... -
Translating research to policy at the NCSE 2017 symposium “Microbiology of the Built Environment: Implications for Health and Design”
(2018-09-15)Here, we summarize a symposium entitled “Microbiology of the Built Environment: Implications for Health and Design” that was presented at the National Council for Science and the Environment (NCSE) 17th National Conference ... -
Transmission of SARS-CoV-2 by inhalation of respiratory aerosol in the Skagit Valley Chorale superspreading event
(medRxiv, 2020-06-15)During the 2020 COVID-19 pandemic, an outbreak occurred following attendance of a symptomatic index case at a regular weekly rehearsal on 10 March of the Skagit Valley Chorale (SVC). After that rehearsal, 53 members of the ... -
Two-phase Monte Carlo simulation for partitioning the effects of epistemic and aleatory uncertainty in TMDL modeling
(American Society of Civil Engineers (ASCE), 2018-10-29)A two-phase Monte Carlo simulation (TPMCS) uncertainty analysis framework is used to analyze epistemic and aleatory uncertainty associated with simulated exceedances of an in-stream fecal coliform (FC) water quality criterion ... -
Understanding Ammonium Transport in Bioelectrochemical Systems towards its Recovery
(Nature Publishing Group, 2016-03-03)We report an integrated experimental and simulation study of ammonia recovery using microbial electrolysis cells (MECs). The transport of various species during the batch-mode operation of an MEC was examined experimentally ... -
Unsupervised Identification of Arbitrarily-damped Structures using Time-Scale ICA: Experimental Investigations
(2018-09-14)To identify the dynamic parameters of the structures with sufficient accuracy, a new method is developed and used in this study. In this method, the wavelet-transformed (WT) representation of system responses is conducted ... -
Urban influence on the concentration and composition of submicron particulate matter in central Amazonia
(European Geophysical Union, 2018-08-23)An understanding of how anthropogenic emissions affect the concentrations and composition of airborne particulate matter (PM) is fundamental to quantifying the influence of human activities on climate and air quality. The ... -
Urban pollution greatly enhances formation of natural aerosols over the Amazon rainforest
(Springer Nature, 2019-03-05)One of the least understood aspects in atmospheric chemistry is how urban emissions influence the formation of natural organic aerosols, which affect Earth's energy budget. The Amazon rainforest, during its wet season, is ... -
Using a Molecular Dynamics Simulation to Investigate Asphalt Nano-Cracking under External Loading Conditions
(MDPI, 2017-07-28)Recent research shows that macro-scale cracking in asphalt binder may originate from its intrinsic defects at the nano-scale. In this paper, a molecular dynamics (MD) simulation was conducted to evaluate the nucleation of ... -
Using the class 1 integron-integrase gene as a proxy for anthropogenic pollution
(Nature Publishing Group, 2015-06-01)Around all human activity, there are zones of pollution with pesticides, heavy metals, pharmaceuticals, personal care products and the microorganisms associated with human waste streams and agriculture. This diversity of ... -
Vehicle fleet emissions of black carbon, polycyclic aromatic hydrocarbons, and other pollutants measured by a mobile laboratory in Mexico City
(Copernicus Publications, 2005-12-01)Black carbon ( BC) and polycyclic aromatic hydrocarbons (PAHs) are of concern due to their effects on climate and health. The main goal of this research is to provide the first estimate of emissions of BC and particle-phase ...