Results 131 to 140 of about 646,559 (302)

Transformer fault diagnosis using an efficient simulation-driven variational quantum classifier with domain-aware feature encoding

Alexandria Engineering Journal
Early transformer fault diagnosis is challenged by nonlinear dissolved-gas interactions, overlapping fault signatures, and limited labeled data, while practical deployment further requires reliable performance under realistic computational constraints ...
Huy Hoang Le, Ba Tu Phung, Dai Huynh, Kim-Anh Nguyen   +3 more
doaj   +1 more source

Cu-Doped MoSe₂ Monolayer: A Novel Candidate for Dissolved Gas Analysis in Transformer Oil. [PDF]

ACS Omega, 2020
Yang S, Chen X, Gu Z, Ling T, Li Y, Ma S.   +5 more
europepmc   +1 more source

Dissolved gas analysis: Gas measurements technologies – Part 2 – Gas Chromatography (GC)

Transformers Magazine, 2023
This is the second part of the column “Gas measurement technologies for DGA”. In Part 1, the principles and problematics of DGA (dissolved gas analysis) were presented as a chemical method based on chemical measurements. The column is mainly intended for non-chemists who are interested in understanding the basics and the main weaknesses of the most ...
openaire   +1 more source

The Role of Small Reservoirs in Reducing Reactive N Export Via Denitrification [PDF]

, 2019
Reactive nitrogen (N), which harms ecosystem health, has been increasing in the biosphere, leading to higher N export to coastal ecosystems. Although man-made reservoirs can be significant sources of greenhouse gases, they can also retain N, thus ...
Phillips, Margaret, Wollheim, Wil
core   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Spectrometric methodology for dissolved gas analysis

Transformers Magazine
In previous columns, gas chromatography and electrochemical approaches for dissolved gas measurement were described. In this column, the oldest and emerging method, spectrometry, is described. It is an applicable method for most online and portable devices, and it may reappear in laboratories as reliable and standardized.
openaire   +1 more source

A new global gas hydrate budget based on numerical reaction-transport modeling and a novel parameterization of Holocene and Quaternary sedimentation [PDF]

, 2011
This study provides new estimates for the global methane hydrate inventory based on reaction-transport modeling [1]. A multi-1D model for POC degradation, gas hydrate formation and dissolution is presented.
Burwicz, Ewa, Rüpke, Lars, Wallmann, Klaus   +2 more
core  

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Dissolved gas content forecasting in power transformers based on Least Square Support Vector Machine (LSSVM)

Latin-American Journal of Computing, 2017
Taking into account the chaotic characteristic of gas production within power transformers, a Least Square Support Vector Machine (LSSVM) model is implemented to forecast dissolved gas content based on historical chromatography samples.
Roberto Fiallos
doaj