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Search Publications

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Displaying 51 - 75 of 511

Working fluid selection for heat pumps in solar district heating systems

March 10, 2022
Author(s)
Shengqing Xiao, Dimitri Nefodov, Mark O. McLinden, Markus Richter, Thorsten Urbaneck
In the context of the global energy transition, solar energy holds a promising potential as an energy source for a sustainable heat supply. Solar thermal collector in combination with heat pump technology utilizing electricity from renewable sources, such

New International Formulation for the Thermal Conductivity of Heavy Water

March 9, 2022
Author(s)
Marcia L. Huber, Richard A. Perkins, Marc Assael, Stella Monogenidou, Robert Hellmann, Jan Sengers
The International Association for the Properties of Water and Steam (IAPWS) has adopted a new formulation for the thermodynamic properties of heavy water. This manuscript describes the development of a new correlation for the thermal conductivity of heavy

Life Cycle Environmental Impacts of Plastics: A Review

March 1, 2022
Author(s)
Paul Rikhter, Ilayda Dinc, Yirui Zhang, Ted Jiang, Bobby Miyashiro, Shelby Walsh, Ruoyu Wang, Yvonne Dinh, Sangwon Suh, Joshua D. Kneifel
Global production and consumption of plastics and its deposition in the environment are growing rapidly, while their life-cycle impacts to the environment are yet to be fully understood. This study reviews the existing literature with the goal of

Temporal tends of persistent organic pollutants in Sarasota Bay common bottlenose dolphins (Tursiops truncatus)

February 17, 2022
Author(s)
John Kucklick, Ashley Boggs-Russell, Kevin Huncik, Amanda Moors, Elizabeth Davis, Gina Ylitalo, Mary McConnell, Christina Makris, Randall Wells
Legacy persistent organic pollutants (POPs) were measured in blubber samples collected from 196 common bottlenose dolphins (Tursiops truncatus) during 2000 to 2016 in the Sarasota Bay, Florida, ecosystem. Legacy POPs included polychlorinated biphenyl

Silicone tube humidity generator

February 16, 2022
Author(s)
Robert F. Berg, Nicola Chiodo, Eric Georgin
We describe the model and construction of a two-flow (or divided-flow) humidity generator, developed at LNE-CNAM, that uses mass flow controllers to mix a stream of dry gas with a stream of humid gas saturated at 28 °C. It can generate a wide range of

Quantification of urban biogenic carbon fluxes using bottom-up inventory and satellite-based model

January 5, 2022
Author(s)
Joy Winbourne, Hrstiana Stoynova, Ian Smith, Conor Gately, Barry Logan, Jaret Reblin, Andrew Reinmann, David W. Allen, Lucy Hutyra
Cities across the globe are taking the lead on climate mitigation action with ambitious goals to reduce carbon dioxide (CO2) emissions. The implementation of effective mitigation policies will require accurate measurements to guide policy decisions and

Disposition of Fluorine on New Firefighter Turnout Gear: Implications for Occupational Exposure

December 27, 2021
Author(s)
Derek Muensterman, Ivan Titaley, Graham Peaslee, Leah Minc, Liliana Cahuas, Alix Rodowa, Yuki Horiuchi, Shogo Yamane, Thierry Fouquet, John Kissel, Courtney Carignan, Jennifer Field
Firefighter turnout gear is essential for reducing occupational exposure to hazardous chemicals during training and fire events. Per-and polyfluoroalkyl substances (PFASs) are observed in firefighter serum, and possible occupational sources include the air

Circular Economy in the High-Tech World Workshop Report

December 14, 2021
Author(s)
Martin L. Green, Kelsea Schumacher
The National Institute of Standards and Technology (NIST) held a Technical Workshop on January 27 and 28, 2021 to assess the state and challenges of a Circular Economy (CE) in the High-Tech World. Scientists, researchers, and program managers in the CE

Materials Testing in Hydrogen

November 30, 2021
Author(s)
Matthew Connolly, May Ling Martin, Damian Lauria, Peter Bradley, Zack Buck, Andrew Slifka, Robert L. Amaro

Liver proteome response to torpor in a basoendothermic mammal, Tenrec ecaudatus, provides insights into the evolution of homeothermy

October 6, 2021
Author(s)
Jane Khudyakov, Michael Treat, Mikayla Shanafelt, Jared Deyarmin, Ben Neely, Frank van Breukelen
Many mammals use adaptive heterothermy (e.g., torpor, hibernation) to reduce metabolic demands of maintaining high body temperature (Tb). Torpor is typically characterized by coordinated declines in Tb and metabolic rate (MR) followed by active rewarming

Critical Capability Needs for Reduction of Transmission of SARS-CoV-2 Indoors

September 30, 2021
Author(s)
Jayne B. Morrow, Aaron Packman, Kenneth F. Martinez, Kevin V. Wymelenberg, Darla Geores, Delphine K. Farmer, Jade Mitchell, Lisa Ng, Yair Hazi, Monica Schoch-Spana, Sandra Quinn, Bill Bahnfleft, Paula Olsiewski
Coordination of efforts to assess the challenges and pain points felt by industries from around the globe working to reduce COVID-19 transmission in the indoor environment as well as innovative solutions applied to meet these challenges is mandatory

Building for Environmental and Economic Sustainability (BEES) Online 2.1 Technical Manual

September 20, 2021
Author(s)
Joshua D. Kneifel, Anne Landfield Greig, Priya Lavappa, Brian Polidoro
Building stakeholders need practical metrics, data, and tools to support decisions related to sustainable building product selection. The Engineering Laboratory of the National Institute of Standards and Technology (NIST) has addressed this national need

Data-Based Models for Hurricane Evolution Prediction: A Deep Learning Approach

September 8, 2021
Author(s)
Rikhi Bose, Adam L. Pintar, Emil Simiu
Fast and accurate prediction of hurricane evolution from genesis onwards is needed to reduce loss of life and enhance community resilience. In this work, a novel model development methodology for predicting storm trajectory is proposed based on two classes

Evaluation of existing infiltration models used in building energy simulation

September 1, 2021
Author(s)
Yeonjin Bae, Jaewan Joe, Seungjae Lee, Piljae Im, Lisa Ng
Infiltration modeling is one of the major sources of uncertainty in building energy simulation. Although many infiltration models exist, their structures and assumptions vary, and many of them are inaccurate for commercial buildings. The use of these

Naturally occurring organobromine compounds (OBCs) including polybrominated dibenzo-p-dioxins in the marine sponge Hyrtios proteus from The Bahamas

August 25, 2021
Author(s)
Qiong Wu, Natalie Eisenhardt, Stephanie Shaw, Joseph Pawlik, John Kucklick, Walter Vetter
Halogenated natural products (HNPs) were identified from organic extracts of the marine sponge Hyrtios proteus from The Bahamas (Caribbean, FAO fishing area 31) using gas chromatography with electron capture negative ion mass spectrometry (GC/ECNI-MS) and

Quantifying Machining Process Inventories In Detailed Design

August 24, 2021
Author(s)
William Z. Bernstein, Till Boettjer, Deverajan Ramanujan
This paper quantifies machining process inventories based on commonly used techniques in various stages of the detailed design process. We investigate variabilities in process inventories between these techniques and their relation to manufacturing process

Crystal Structure, Sorption Property and Electronic Structure of the Flexible MOF, (Ni-4,4'azopyridine)[Ni(CN)4]

August 16, 2021
Author(s)
Winnie Wong-Ng, Gregory T. McCandless, Jeffrey T. Culp, Matthew Lawson, Yu-Sheng Chen, Daniel Siderius, Lan Li
The flexible metal organic framework (MOF) compound, Ni(L)[Ni(CN)4], (L = 4,4'azopyridine (C10N4H8), nicknamed AzoPyr) is a 3D porous material that adopts the Hofmann-type structure. This paper reports our synthesis of Ni-AzoPyr and its structural, bonding
Displaying 51 - 75 of 511