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Št. zadetkov: 8
Super heavy dark matter from inflationary Schwinger production
Mar Bastero-Gil, Paulo B. Ferraz, Lorenzo Ubaldi, Roberto Vega-Morales
Izvirni znanstveni članek
Oznake: teoretična fizika;temna snov;temni fotoni;
We consider a simple setup with a dark sector containing dark electrons charged under an Abelian 𝑈⁢(1)𝐷 gauge symmetry. We show that, if the massless dark photon associated to the 𝑈⁢(1)𝐷 is produced during inflation in such a way as to form a classical dark electric field, then dark electron-pos ...
Leto: 2024 Vir: Institut Jožef Stefan (IJS)
Classical constant electric fields and the Schwinger effect in de Sitter
Mar Bastero-Gil, Paulo B. Ferraz, António Torres Manso, Lorenzo Ubaldi, Roberto Vega-Morales
Izvirni znanstveni članek
Oznake: Schwingerjev pojav;Schwinger effect;de Sitter space;magnetogenesis;
We study constant classical electric fields and the Schwinger effect in de Sitter space, with potential implications for magnetogenesis and inflationary dark matter production. Treating the photon as a dynamical field, we show that sustaining a constant electric field in de Sitter requires a tachyon ...
Leto: 2026 Vir: Institut Jožef Stefan (IJS)
Schwinger current in de Sitter space
Mar Bastero-Gil, Paulo B. Ferraz, António Torres Manso, Lorenzo Ubaldi, Roberto Vega-Morales
Izvirni znanstveni članek
Oznake: schwinger;de Sitter;dark matter;magnetogenesis;
We study classical background electric fields and the Schwinger effect in de Sitter space. We show that a constant electric field in de Sitter requires the photon to have a tachyonic mass proportional to the Hubble scale. This has physical implications for the induced Schwinger current that affect i ...
Leto: 2026 Vir: Institut Jožef Stefan (IJS)
Evaluation of the physical properties of bedding materials for dairy cattle using fuzzy clustering analysis
Patrícia Ferreira Ponciano Ferraz, Gabriel Araújo e Silva Ferraz, Lorenzo Leso, Marija Klopčič, Giuseppe Rossi, Matteo Barbari
Izvirni znanstveni članek
Oznake: govedo;krave molznice;nastil;
The bedding materials used in dairy cow housing systems are extremely important for animal welfare and performance. A wide range of materials can be used as bedding for dairy cattle, but their physical properties must be analysed to evaluate their potential. In the present study, the physical proper ...
Leto: 2020 Vir: Biotehniška fakulteta (UL BF)
Economic growth and public indebtedness in the last four decades
Ricardo Ferraz, António Portugal Duarte
Izvirni znanstveni članek
Oznake: economy;economic growth;Portugal;‘PIIGS’;public debt;
Portugal is a member of the group known by investors as ‘PIIGS’, countries characterised by having high public debt and weak economic growth. Using an extended time horizon, 1974–2014, this study seeks to empirically explore the relationship between economic growth and public debt in the PIIGS econo ...
Leto: 2015 Vir: Ekonomsko-poslovna fakulteta (UM EPF)
From predatory journals to dubious reviewers
Rodrigo Ferraz Ramos, Lisiane Sobucki, Tine Grebenc, Zaida Ines Antoniolli
Kratki znanstveni prispevek
Oznake: znanstvena komunikacija;predatorske revije;dvomljivi recenzenti;recenzijski proces;scientific communication;predatory journals;dubious reviewers;reviewing process;
From predatory journals to dubious reviewers
Leto: 2026 Vir: Digitalni repozitorij raziskovalnih organizacij Slovenije
Ectomycorrhizal compatibility of Lactarius quieticolor and Tuber floridanum with Pinus elliottii and Pinus taeda
L. C. Dias, Rodrigo Ferraz Ramos, Juliano Borela Magalhães, V. G. Handte, Valeria Ferreira-Gregorio, P. H. Santiago, D. L. Scheid, L. A. Tabaldi, E. Gasparin, Tine Grebenc, Zaida Ines Antoniolli
Izvirni znanstveni članek
Oznake: ektomikoriza;združljivost gostitelja in glive;Pinaceae;rast rastlin;užitne glive;ectomycorrhizae;host-fungus compatibility;plant growth;edible fungi;
This study evaluated ectomycorrhizal compatibility, functional effects, and the inoculum-dose response of Lactarius quieticolor and Tuber floridanum in Pinus elliottii and Pinus taeda, aiming to understand the role of fungus-host specificity in the expression of growth and physiological responses. B ...
Leto: 2026 Vir: Repozitorij Univerze v Ljubljani (RUL)
Recent research on trichoderma in biological control and plant growth promotion
Vicente Guilherme Handte, Rodrigo Ferraz Ramos, Juliano Borela Magalhães, Valéria Ortaça Portela, Eduarda Pereira de Pereira, Lisiane Sobucki, Lorena Brito Pimentel Rodrigues dos Santos, Tine Grebenc, Zaida Ines Antoniolli, Rodrigo Josemar Seminoti Jacques
Pregledni znanstveni članek
Oznake: biological control;biofungicides;plant growth promotion;species–target networks;fungal taxonomy;field validation;bioinputs;
Trichoderma is among the most extensively studied fungal genera for biological control and plant growth promotion. We conducted a descriptive quantitative review of English-language original articles published from January 2021 to July 2025 to describe application categories, taxonomic representatio ...
Leto: 2026 Vir: Digitalni repozitorij raziskovalnih organizacij Slovenije
Št. zadetkov: 8
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