Results 21 to 30 of about 35,209 (166)

Excitonic coherent states: symmetries and thermalization [PDF]

open access: yes, 2014
In previous work [1] new bounded coherent states construction, based on a Keldysh conjecture, was introduced. As was shown in [1] the particular group structure arising from the model leads to new symmetry transformations for the coherent states system ...
Cirilo-Lombardo, Diego Julio
core   +2 more sources

Cirilo Huapaya Manco

open access: yesDevenir - Revista de estudios sobre patrimonio edificado, 2018
Don Cirilo Huapaya Manco es sin duda un ejemplo de un imprescindible peruano patrimonialista. A su conocimiento sobre el Perú, forjado en el día a día de la investigación arqueológica, se suma su labor de difusión pedagógica, teñida de gran afecto en cada uno de los detalles descriptivos de los bienes culturales que  descubrió, y trasmitió a sus ...
openaire   +3 more sources

Humanism at the Council of Constance. Diego de Anaya, Classical Manuscripts and Education in Salamanca

open access: yesRenaissance Studies, EarlyView.
Abstract Due to their prolonged and multicultural nature, councils functioned historically as hubs for the exchange of ideas, discourse, diplomacy and rhetoric, reflecting broader cultural trends. In the Middle Ages, no international forums were comparable to ecumenical councils, where diverse and influential groups from various regions convened to ...
Federico Tavelli
wiley   +1 more source

High‐Resolution Digital Terrain Model and Land‐Surface Parameters of São Sebastião and Ilhabela, Southeastern Brazil

open access: yesGeoscience Data Journal, Volume 13, Issue 2, April 2026.
The first openly accessible 2 m‐resolution lidar‐based DTM and an extensive set of land‐surface parameters (LSPs) for the region of São Sebastião and Ilhabela, southeastern Brazil, reveal geomorphological features previously indiscernible, including past landslide deposits, drainage captures and structural lineaments.
Rebeca Durço Coelho   +3 more
wiley   +1 more source

Rotating charged Black Holes in Einstein-Born-Infeld theories and their ADM mass

open access: yes, 2006
In this work, the solution of the Einstein equations for a slowly rotating black hole with Born-Infeld charge is obtained. Geometrical properties and horizons of this solution are analyzed.
B. Hoffmann   +11 more
core   +2 more sources

Quaternionic (super)twistors extensions and general superspaces [PDF]

open access: yes, 2016
In a attempt to treat a supergravity as a tensor representation, the 4-dimensional N-extended quaternionic superspaces are constructed from the (diffeomorphyc)graded extension of the ordinary Penrose-twistor formulation, performed in a previous work of ...
Cirilo-Lombardo, Diego Julio   +1 more
core   +2 more sources

Geographic provenance and environmental growing conditions as factors influencing phytochemical composition of Arabica green coffee beans

open access: yesPlant Biology, Volume 28, Issue 2, Page 520-534, March 2026.
Growth environment strongly influences green coffee bean biochemistry, linking phytochemical composition to adaptation under abiotic stress. Abstract This study explores how bioactive compounds in green coffee beans (Coffea arabica L.) vary across different geographic regions, addressing the key question of how environmental factors shape coffee ...
I. Pettazzoni   +6 more
wiley   +1 more source

Austempering Post‐Intercritical Austenitizing to Enhance Mechanical Properties of an Oil Country Tubular Goods Steel

open access: yessteel research international, Volume 96, Issue 12, Page 211-227, December 2025.
A new austempering approach following intercritical austenitizing is explored to improve the mechanical behavior of API 5CT steel. By tailoring ferrite–bainite microstructures, the process achieves a balance of strength and ductility without the need for post‐quench tempering. The results highlight a cost‐effective alternative to conventional quenching
Paulo Henrique Cirilo   +2 more
wiley   +1 more source

A modeling of the carbon-nitrogen cycle transport at Igap\'o I Lake - Londrina, Paran\'a, Brazil

open access: yes, 2010
This work is a contribution to better understand the effect that domestic sewage discharges may cause in a water body, specifically Igap\'o I Lake, in Londrina, Paran\'a, Brazil.
Cirilo, Eliandro Rodrigues   +3 more
core   +2 more sources

A New Anion Exchange Membranes Pretreatment Protocol for Hydrogen Production by Water Electrolysis

open access: yesEnergy Technology, Volume 13, Issue 11, November 2025.
This article investigates the effect of pretreatment protocols on the TokuyamaA210 anion exchange membrane for hydrogen production via water electrolysis. A novel water‐based method improves efficiency by 2.6% and reduces reagent use. Characterisation techniques, including scanning electron microscope/energy‐dispersive X‐ray detector and Tafel slope ...
Manuel Ángel González Rodríguez   +4 more
wiley   +1 more source

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