Results 41 to 50 of about 3,454 (185)

Thinking of Melastomataceae: Revisiting Humboldt and Bonpland's Monographie des Melastomacées (1806–1823) from a historical perspective

open access: yesTAXON, Volume 75, Issue 3, June 2026.
Abstract During their voyage to the Americas (1799–1804), Alexander von Humboldt and Aimé Bonpland described and collected American flora, fauna, minerals and other objects. After returning to Europe, they published several works, including Monographie des Melastomacées, initiated by Bonpland to classify this complex botanical family.
Marina Ramos de Azevedo   +1 more
wiley   +1 more source

Multivariate optimization of an ultrasound-assisted extraction procedure for Cu, Mn, Ni and Zn determination in ration to chickens

open access: yesAnais da Academia Brasileira de Ciências, 2013
In this work, multivariate optimization techniques were used to develop a method based on the ultrasound-assisted extraction for copper, manganese, nickel and zinc determination from rations for chicken nutrition using flame atomic absorption ...
JOELIA M. BARROS   +5 more
doaj   +1 more source

Glioneuronal Tumour With Neurocytic Differentiation (GNTN): a Molecularly Defined Tumour Type Formerly Referred to as Extraventricular Neurocytoma

open access: yesNeuropathology and Applied Neurobiology, Volume 52, Issue 3, June 2026.
Tumours historically termed extraventricular neurocytoma form a distinct epigenetic and molecular glioneuronal tumour class characterised by neurocytic differentiation and recurrent MAPK pathway alterations, predominantly involving FGFR1. The identification of these tumours in both intraventricular and extraventricular locations demonstrates that ...
Alice Métais   +15 more
wiley   +1 more source

Revisiting Intrinsic Predictability of Wave‐Convection Coupled Bands Over Southern China: Variable and Scale‐Dependent Error Growth Characteristics

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract This study investigates the variable‐ and scale‐dependent intrinsic predictability of wave‐convection coupled bands over southern China on 30 January 2018, using 1‐km simulations under varying initial moisture conditions. The predictability time is quantified via the Loss Predictability Index (LPI), defined as the ratio of the forecast error ...
Manshi Weng   +4 more
wiley   +1 more source

Arsenic toxicity to cladocerans isolated and associated with iron: implications for aquatic environments

open access: yesAnais da Academia Brasileira de Ciências, 2016
Arsenic is an ametal ubiquitous in nature and known by its high toxicity. Many studies have tried to elucidate the arsenic metabolism in the cell and its impact to plants, animals and human health.
SUELLEN C.M. SALES   +2 more
doaj   +1 more source

Inequalities in school spending across local authorities in England: A time‐trend analysis

open access: yesBritish Educational Research Journal, Volume 52, Issue 2, Page 1076-1091, April 2026.
Abstract Investment in schools has wide‐ranging implications for society, from improving learning outcomes to economic growth and social cohesion. Addressing inequalities in school funding is important, as part of an effort to guarantee equal opportunities.
Lateef Akanni   +10 more
wiley   +1 more source

Hipersensibilidade a Metais Utilizados durante o Tratamento Ortodôntico

open access: yesRevista da Faculdade de Odontologia de Porto Alegre, 2007
Na prática ortodôntica podem ocorrer reações adversas em pacientes devido aos materiais utilizados durante o tratamento, tanto de natureza irritativa como reações de hipersensibilidade.
Eduardo MACHADO   +3 more
doaj   +1 more source

Radionuclides and heavy metal contents in phosphogypsum samples in comparison to cerrado soils Conteúdo de radionuclídeos e metais pesados em amostras de fosfogesso, comparativamente ao de solos de cerrado

open access: yesRevista Brasileira de Ciência do Solo, 2009
Phosphogysum (PG) or agricultural gypsum, a solid waste from the phosphate fertilizer industry, is used as soil amendment, especially on soils in the Cerrado region, in Brazil.
Vanusa Maria Feliciano Jacomino   +7 more
doaj   +1 more source

Negative Impact of Dental Wastewater on the Environment and Human Health: A Scoping Review

open access: yesWater Environment Research, Volume 97, Issue 12, December 2025.
Dental wastewater (DWW) may carry hazardous contaminants (toxic metals, chemicals, and microorganisms) from clinical procedures into municipal sewers and wastewater treatment plants, with potential release to receiving waters. Because treatment may not fully remove all pollutants, the most effective prevention point is source control.
Giordana Picolo Furini   +2 more
wiley   +1 more source

Variações de nutrientes e estado trófico em viveiros seqüenciais de criação de peixes - DOI: 10.4025/actascianimsci.v27i3.1218

open access: yesActa Scientiarum: Animal Sciences, 2008
O estudo avaliou o estado trófico e o aumento nas concentrações de nutrientes em viveiros seqüenciais em períodos de curta duração. Foram estudados seis viveiros de criação semi-intensiva de peixes que receberam efluentes de outros tanques em paralelo ...
Carla Fernandes Macedo   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy