Results 11 to 20 of about 21,973 (228)
A Novel Voltammetric Approach for the Rapid Quantification of Rosmarinic Acid in Origanum micranthum and Origanum minutiflorum [PDF]
Chemistry &Biodiversity, Volume 23, Issue 11, November 2026.A sensitive voltammetric method using a boron‐doped diamond (BDD) electrode enables the quantification of rosmarinic acid (RA) in Origanum extracts. UV–Vis spectroscopy reveals higher RA content in ethyl acetate subextracts, while the combined spectroscopic and electrochemical approach provides an efficient strategy for RA analysis in the investigated ...
Elif Mollahasanoğlu +11 more
wiley +2 more sources
Europium Doped Atomically Precise Bismuth Oxido Nanoclusters as Molecular Building Blocks for Photoluminescent Hybrid Materials [PDF]
Chemistry – A European Journal, Volume 32, Issue 41, 3 November 2026.Europium doping of bismuth oxido nanoclusters (BiO‐NCs) provides stable hosts for Eu3+ in an asymmetric coordination environment, which in turn results in an intense 5D0→7F0 transition and long luminescence lifetimes. Transparent hybrid materials showing characteristic red photoluminescence are accessible via radical copolymerisation of these soluble ...
Rico Thomas +5 more
wiley +2 more sources
Economía Agraria y Recursos Naturales, 2011 En este artículo se evalúan los instrumentos del enfoque utilizado en la Ronda de Doha de la Organización Mundial de Comercio para establecer disciplinas en relación con la ayuda interna a la agricultura.
David Blandford
doaj +1 more source
Are Osteomeatal Complex Variations Related to Nasolacrimal Canal Morphometry? [PDF]
Iranian Journal of Otorhinolaryngology, 2022 Introduction:Due to the close anatomic relationship between paranasal structures and NLC, the morphometric measure of the nasolacrimal canal (NLC) could be affected by the osteomeatal complex (OMC) anatomical variations. The present study aimed to assess
Leila Khojastepour +2 more
doaj +1 more source
High‐Resolution Imaging of CO Outflows in OMC‐2 and OMC‐3 [PDF]
The Astrophysical Journal, 2003 A large scale, high resolution map of CO(1-0) emission toward the OMC-2 and OMC-3 star forming regions is presented. The map is a mosaic of 46 fields using the Berkeley-Illinois-Maryland Array (BIMA) and covers $\sim 10'\times 15'$ at $\sim 10" $ resolution.
Williams, Jonathan P. +2 more
openaire +2 more sources
Revista Historia de la Educación Latinoamericana, 2019 Ante el desmedido ataque de las políticas neoliberales a las estructuras que fundamentan la existencia de los servicios públicos en los Estados nacionales, se impone la generación de pensamiento fundamentados en lo propio, en la diversidad, en la ...
Justo Cuño Bonito
doaj +1 more source
Dust Filaments and Star Formation in OMC-2 and OMC-3 [PDF]
The Astrophysical Journal, 1997 We have mapped the 1300 μm dust emission of a 6' × 16' field in the OMC-2 and -3 region and detected an extended filamentary structure with at least 11 embedded condensations in OMC-2 and 10 in OMC-3. Six have been observed previously at 1300 μm, and two were also detected by IRAS. We observed eight of the new sources at six wave bands from 350 to 2000
R. Chini +6 more
openaire +1 more source
A geopolítica das terras raras
Carta Internacional, 2017 Variações de oferta e dificuldades de acesso a determinados produtos estratégicos podem provocar mudanças na geopolítica internacional. Os choques do petróleo ocorridos na década de 1970 são, talvez, os exemplos mais conhecidos de como a reconfiguração ...
Filipe Reis Melo
doaj +1 more source
Frontiers in Chemistry, 2022 Air pollutants cause severe problems in urban areas, specifically in terms of toxicological impacts on human health. Therefore, it is urgent to develop an effective, safe, and inexpensive technique to remove these air pollutants.
Li He +5 more
doaj +1 more source
La biotecnología en Argentina: nuevos productos, nuevos desafíos multilaterales
Revista Derecho del Estado, 2016 Desde hace 20 años, una alianza multisectorial público-privada ha transformado a Argentina en un actor global destacado en el desarrollo de productos biotecnológicos destinados a la alimentación y a la producción de energías renovables.
Luciano M. Donadio Linares
doaj +1 more source