Results 61 to 70 of about 22,477 (237)

Diagnóstico de descargas parciais em subestações isoladas a gás SF6 utilizando redes neurais artificiais [PDF]

, 2006
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia ElétricaO presente trabalho de dissertação aborda o desenvolvimento de uma ferramenta computacional para o diagnóstico de ...
Paulo, Assis Rogério Gomes da Silva
core  

Board Networks and Corporate Carbon Emissions: A Cross‐Country Analysis of Causal Effects

Business Strategy and the Environment, EarlyView.
ABSTRACT This study examines whether board networks influence corporate carbon emissions and the strategic pathways through which firms decarbonize. Using a sample of 1952 firms across 48 countries from 2003 to 2020, we employ dynamic stacked regressions that exploit exogenous carbon‐regulation shocks affecting firms connected through shared third ...
Katarzyna Burzynska, Sara Jonsson, Lu Liu, Michał Dzieliński   +3 more
wiley   +1 more source

Mapping and Interrelationships of the Drivers of Sustainable Agricultural Practice Adoption Among Smallholder Rice Farmers: A Multi‐Criteria Decision‐Making Analysis for Climate Resilience

Business Strategy and the Environment, EarlyView.
ABSTRACT Rice production sustains food security and rural livelihoods across many low‐income countries but remains highly vulnerable to climate‐related hazards, including floods, droughts, salinity intrusion and heat stress, which reduce yields and threaten the long‐term sustainability of rice production.
Apurbo Sarkar, Md. Ali Akber, Julius H. Kotir, Risti Permani, Ammar Abdul Aziz   +4 more
wiley   +1 more source

Enabling Cross‐Coupling Reactivity of α‐Pentafluorosulfanyl Compounds with a Thermally Stable Organozinc α‐SF5 Reagent

Chemistry – A European Journal, EarlyView.
This work describes the first example of a thermally stable α‐SF5 organometallic reagent, which allows for extensive downstream functionalization by allylation and acylation reactions under copper catalysis, as well as palladium‐catalyzed Negishi‐type cross‐coupling conditions up to 96% yield. In silico analysis shines initial light on the requirements
Lujie Xu, David Rombach
wiley   +1 more source

Study of the turbulent mixing zone induced by the Richtmyer-Meshkov instability using Laser Doppler Velocimetry and Schlieren visualizations [PDF]

, 2012
An experimental study of the compressible mixing generated by the Richtmyer-Meshkov instability (RMI) is carried out in a vertical shock tube by means of two-components Laser Doppler Velocimetry (2C-LDV) measurements and Time-resolved Schlieren ...
Haas, Jean-François, Joly, Laurent, Jamme, Stéphane, Bouzgarrou, Ghazi, Bury, Yannick   +4 more
core  

Quantifying transport into the lowermost stratosphere using simultaneous in-situ measurements of SF₆ and CO₂ [PDF]

, 2008
The seasonality of transport and mixing of air into the lowermost stratosphere (LMS) is studied using distributions of mean age of air and a mass balance approach, based on in-situ observations of SF6 and CO2 during the SPURT (Spurenstofftransport in der
Bönisch, Harald, Curtius, Joachim, Birner, Thomas, Engel, Andreas, Hoor, Peter   +4 more
core   +1 more source

Diffusion principles of SF6 tracer gas: constraints on SF6 mixing distance in mine tunnels

Scientific Reports
Mine wind measurement work is an important task to ensure the normal operation of mine production and environmental safety. The traditional wind measurement method uses the average wind speed and average cross-sectional area of the tunnel to calculate ...
Fang Xu, Jian Liu, Dong Wang, Xue Liu
doaj   +1 more source

Comparative Study of Gas and Liquid Flow in Packed Beds Using Phase‐Contrast MRI

Chemie Ingenieur Technik, EarlyView.
This work presents applications of phase‐contrast magnetic resonance imaging (MRI) to investigate fluid flow fields and temperature in packed beds. Comparison of ethane (C2H6) gas flow with that of water flow is done at similar flow conditions. The temperature of water is also measured using MRI.
Maitreyi Sangal, Maria Anikeeva, Frank Godenschweger, Jan‐Bernd Hövener, Oliver Speck   +4 more
wiley   +1 more source

Characterization of uncertainties in atmospheric trace gas inversions using hierarchical Bayesian methods [PDF]

, 2014
We present a hierarchical Bayesian method for atmospheric trace gas inversions. This method is used to estimate emissions of trace gases as well as "hyper-parameters" that characterize the probability density functions (PDFs) of the a priori emissions ...
Li, S., M. Rigby, Ganesan, Anita Lakshmi, S. Park, Fraser, P. J., S. Li, S. J. O'Doherty, P. K. Salameh, Prinn, Ronald G., L. P. Steele, Ganesan, A. L., O'Doherty, Simon, A. Zammit-Mangion, Krummel, P. B., P. B. Krummel, Muehle, J., Zammit-Mangion, A., Prinn, R. G., Weiss, R. F., Muhle, Jens, Steele, L. P., Rigby, M., Manning, A. J., Kim, K. -R., A. J. Manning, A. L. Ganesan, R. F. Weiss, Park, S., Manning, Alistair J., C. M. Harth, P. J. Fraser, Harth, C. M., Salameh, P. K., K.-R. Kim, O'Doherty, S. J., J. Mühle, R. G. Prinn, Kim, K.-R.   +37 more
core   +2 more sources

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source