Zobrazeno 1 - 10
of 1 346
pro vyhledávání: '"Helder M"'
Autor:
Oriane Bodson, Vinay Bothra, Diana Sarakbi, Philippa White, Melissa B Kleine-Bingham, Gregorio Rangel, Treasa Kelleher, Nana Afriyie Mensah Abrampah, Matthew Neilson, Helder M de Carvalho, Feliciano da C A Pinto, Shamsuzzoha Babar Syed
Publikováno v:
BMJ Open, Vol 13, Iss 4 (2023)
Objective This case study examines the enabling factors, strengths, challenges and lessons learnt from Timor-Leste (TLS) as it sought to maintain quality essential health services (EHS) during the COVID-19 pandemic.Design A qualitative case study tri
Externí odkaz:
https://doaj.org/article/f223c69ce351464eae4ccefebd207569
Publikováno v:
Inorganics, Vol 10, Iss 10, p 149 (2022)
This article proposes a definition for the term “pnictogen bond” and lists its donors, acceptors, and characteristic features. These may be invoked to identify this specific subset of the inter- and intramolecular interactions formed by elements
Externí odkaz:
https://doaj.org/article/c81c02bf5a30444a9b0df26858ccd565
Publikováno v:
Molecules, Vol 27, Iss 11, p 3421 (2022)
In chemical systems, the arsenic-centered pnictogen bond, or simply the arsenic bond, occurs when there is evidence of a net attractive interaction between the electrophilic region associated with a covalently or coordinately bound arsenic atom in a
Externí odkaz:
https://doaj.org/article/d00396d5626d4e84bf7bbd2bbc3d4a20
Autor:
Pradeep R. Varadwaj, Helder M. Marques
Publikováno v:
Frontiers in Chemistry, Vol 8 (2020)
A-Site doping with alkali ions, and/or metal substitution at the B and B′-sites, are among the key strategies in the innovative development of A2BB′X6 halide double perovskite semiconducting materials for application in energy and device technolo
Externí odkaz:
https://doaj.org/article/439b757240c9499bbc597e74e7f915f0
Publikováno v:
Molecules, Vol 27, Iss 5, p 1487 (2022)
The phosphorus bond in chemical systems, which is an inter- or intramolecular noncovalent interaction, occurs when there is evidence of a net attractive interaction between an electrophilic region associated with a covalently or coordinately bonded p
Externí odkaz:
https://doaj.org/article/b8f77c6030f14397849bf33b738bf40d
Publikováno v:
Inorganics, Vol 10, Iss 1, p 11 (2022)
An attempt was made, using computational methods, to understand whether the intermolecular interactions in the dimers of molybdenum dichalcogenides MoCh2 (Ch = chalcogen, element of group 16, especially S, Se and Te) and similar mixed-chalcogenide de
Externí odkaz:
https://doaj.org/article/44a9750fd06a44bb8591ddcb722d87d4
Autor:
Eduardo J. Fernández-Ozcorta, Inmaculada Tornero-Quiñones, Ángela Sierras-Robles, Helder M. da Silva, Carlos Manuel Afonso Pereira, Pedro Sáenz-López Buñuel
Publikováno v:
E-Motion, Iss 13 (2019)
Los hábitos de actividad física (AF) y de alimentación son una de las principales causas de algunas de las enfermedades con mayor prevalencia en la actualidad y están estrechamente relacionadas con los trastornos de la conducta alimentaria. En es
Externí odkaz:
https://doaj.org/article/7d6b315717b14ba3853f3b8b55c3ee4b
Autor:
Helder M. Rodycz, Eloi Agostini Jr.
Publikováno v:
Eletrônica de Potência, Vol 23, Iss 3 (2018)
This paper proposes the analysis and design of an active-clamping coupled- inductor boost converter for high-voltage-gain applications. A buck-boost type active clamping circuit is employed in a configuration that enables the leakage energy to be rec
Externí odkaz:
https://doaj.org/article/a387e332722c4ea1a17c15e395a6f77e
Autor:
Rosa Weigand, Helder M. Crespo
Publikováno v:
Applied Sciences, Vol 5, Iss 3, Pp 485-515 (2015)
By crossing two intense ultrashort laser pulses with different colors in a transparent medium, like a simple piece of glass, a fan of multicolored broadband light pulses can be simultaneously generated. These newly generated pulses are emitted in sev
Externí odkaz:
https://doaj.org/article/7fe547a50e8546cb82de2c647b65c3c7
Publikováno v:
Educação em Revista, Vol 31, Iss 2, Pp 61-81 (2015)
Neste trabalho procuramos analisar os discursos sobre a infância em perigo moral que circularam em Portugal nas primeiras décadas do século XX. Partindo do princípio de que um dos resultados da reconstrução da concepção de delinquência infan
Externí odkaz:
https://doaj.org/article/8bed706d62844626920753a2ef3c6374