Results 11 to 20 of about 15,587 (201)

Investigation and Analysis of R463A as an Alternative Refrigerant to R404A with Lower Global Warming Potential

Energies, 2020
This research presents the development of R463A refrigerant, a nonflammable refrigerant that was retrofitted to replace R404A. R463A is primarily composed of hydrofluorocarbons/hydrocarbons/carbon dioxide (HFCs/HCs/CO2), and has global-warming potential (
Piyanut Saengsikhiao, Juntakan Taweekun, Kittinan Maliwan, Somchai Sae-ung, Thanansak Theppaya   +4 more
doaj   +1 more source

Flexible heuristic algorithm for automatic molecule fragmentation: application to the UNIFAC group contribution model

Journal of Cheminformatics, 2019
A priori calculation of thermophysical properties and predictive thermodynamic models can be very helpful for developing new industrial processes. Group contribution methods link the target property to contributions based on chemical groups or other ...
Simon Müller
doaj   +1 more source

The Misselhorn Cycle: Batch-Evaporation Process for Efficient Low-Temperature Waste Heat Recovery

Energies, 2016
The concept of the Misselhorn cycle is introduced as a power cycle that aims for efficient waste heat recovery of temperature sources below 100 °C. The basic idea shows advantages over a standard Organic Rankine Cycle (ORC) in overall efficiency and ...
Moritz Gleinser, Christoph Wieland
doaj   +1 more source

Heating Performance Analysis of a Geothermal Heat Pump Working with Different Zeotropic and Azeotropic Mixtures

Journal of Sustainable Development of Energy, Water and Environment Systems, 2018
The aim of the paper is to examine the possibility of application of the spreadsheet calculator and Reference Fluid Thermodynamic and Transport Properties database to a thermodynamic process.
Robert Bedoić, Veljko Filipan
doaj   +1 more source

Biomethane Production from Agricultural Resources in the Italian Scenario: Techno-Economic Analysis of Water Wash

Chemical Engineering Transactions, 2014
This paper evaluates the thermodynamic performance and costs of biomethane production plants tailored to the Italian scenario, by comparing the competitiveness of a water wash based biogas upgrading plant against a conventional biogas-to-electricity ...
G. Bortoluzzi, M. Gatti, A. Sogni, S. Consonni   +3 more
doaj   +1 more source

A hybrid analytical model for thermodynamic calculations of supercritical carbon dioxide centrifugal compressors

Journal of Thermal Science and Technology
Thermodynamic calculations are important procedures for preliminary design or performances assessment of supercritical carbon dioxide (SCO2) centrifugal compressors. However, the thermodynamic calculations are usually based on the discrete database (NIST
Xiaojian LI, Chenshuo XU, Yijia ZHAO, Ming ZHAO, Zhengxian LIU   +4 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Comparison of machine learning approaches for the identification of top-performing materials for hydrogen storage

Sustainable Chemistry for the Environment
Unique properties of Metal-Organic Frameworks (MOFs), such as their extremely high surface areas and porosity, render them as one of, if not the most promising adsorbents for gas storage applications.
Antonios P. Sarikas, George S. Fanourgakis, Konstantinos Gkagkas, George E. Froudakis   +3 more
doaj   +1 more source