Results 11 to 20 of about 44,877 (157)

3D pollination biology using micro‐computed tomography and geometric morphometrics in Theobroma cacao

Applications in Plant Sciences, Volume 11, Issue 5, September-October 2023., 2023
Abstract Premise Imaging technologies that capture three‐dimensional (3D) variation in floral morphology at micro‐ and nano‐resolutions are increasingly accessible. In herkogamous flowers, such as those of Theobroma cacao, structural barriers between anthers and stigmas represent bottlenecks that restrict pollinator size and access to reproductive ...
Katherine A. Wolcott, Edward L. Stanley, Osman A. Gutierrez, Stefan Wuchty, Barbara Ann Whitlock   +4 more
wiley   +1 more source

Skeletal age during hurricane impacts fluctuating asymmetry in Cayo Santiago rhesus macaques

Ecology and Evolution, Volume 13, Issue 8, August 2023., 2023
Fluctuating asymmetry (FA), or random deviations from symmetry, can be used as a proxy for developmental instability, and anthropogenic and natural disruptions have been associated with increased levels of FA. In this study, we investigate the effect of demographic variables (age, sex, and decade of birth) and hurricane experience on FA in a model ...
Ashly N. Romero, Edwin Dickinson, Cassandra M. Turcotte, Claire E. Terhune   +3 more
wiley   +1 more source

Ecosystem changes through the Permian–Triassic and Triassic–Jurassic critical intervals: Evidence from sedimentology, palaeontology and geochemistry

Sedimentology, Volume 70, Issue 5, Page 1601-1629, August 2023., 2023
ABSTRACT The Permian–Triassic and Triassic–Jurassic critical intervals are among the most significant ecological upheavals in the Phanerozoic. Both evolutionary junctures are characterized by environmental deterioration associated with a marked biodiversity decline.
Yu Pei, Martin Blumenberg, Jan‐Peter Duda, Nils Höche, Jörn Peckmann, Daniel Birgel, Jinxiong Luo, Kurt Kment, Joachim Reitner   +8 more
wiley   +1 more source

Noncompartmental pharmacokinetics of three intravenous mycophenolate mofetil concentrations in healthy Standardbred mares

Veterinary Dermatology, Volume 34, Issue 3, Page 222-234, June 2023., 2023
Background – Mycophenolate mofetil (MMF) is the prodrug of mycophenolic acid (MPA) which acts as an immunosuppressive agent. During the biotransformation of MMF to MPA, additional metabolites including MPA phenol glucuronide (MPAG), MPA acyl glucuronide (AcMPAG) and MPA phenol glucoside (MPG) are formed.
Dylan L. Burroughs, Gwendolen Lorch, Yizhen Guo, Kasey Hill, Eric L. Schroeder, Lynette K. Cole, Mitch A. Phelps   +6 more
wiley   +1 more source

Commodity risk assessment of Alnus cordata, Alnus glutinosa and Alnus incana plants from the UK. [PDF]

EFSA J
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘high‐risk plants, plant products and other objects’. Taking into account the available scientific information, including the technical information provided by ...
EFSA Panel on Plant Health (PLH), Civera AV, Baptista P, Berlin A, Chatzivassiliou E, Cubero J, Cunniffe N, de la Peña E, Desneux N, Di Serio F, Filipiak A, Gonthier P, Hasiów-Jaroszewska B, Jactel H, Landa BB, Maistrello L, Makowski D, Milonas P, Papadopoulos NT, Susi H, van der Gaag DJ, Debode J, Manceau C, Magnusson CS, Navas-Cortes JA, Kritikos C, Kormpi M, Papachristos D, Reppa C, Schulz OM, Gardi C, Civitelli C, Lombardo MF, Akrivou A, Antonatos S, Beris D, Potting R.   +36 more
europepmc   +2 more sources

On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end‐Triassic mass extinction

Papers in Palaeontology, Volume 9, Issue 2, March/April 2023., 2023
Abstract A peculiar record of previously undescribed and/or rarely described nannoliths from the Hettangian to lower Pliensbachian of the Llanbdr (Mochras Farm) core, Wales (UK) is documented here. Some of the observed morphotypes are assigned to didemnid ascidians, commonly observed in the upper Rhaetian, as evidence of the resilience of ascidian ...
Maria Paulsen, Nicolas Thibault, Yue Wang   +2 more
wiley   +1 more source

Cranial ecomorphology of turtles and neck retraction as a possible trigger of ecological diversification

Evolution, Volume 76, Issue 11, Page 2566-2586, November 2022., 2022
Abstract Turtles have a highly modified body plan, including a rigid shell that constrains postcranial anatomy. Skull morphology and neck mobility may therefore be key to ecological specialization in turtles. However, the ecological signal of turtle skull morphologies has not been rigorously evaluated, leaving uncertainties about the roles of ...
Guilherme Hermanson, Roger B. J. Benson, Bruna M. Farina, Gabriel S. Ferreira, Max C. Langer, Serjoscha W. Evers   +5 more
wiley   +1 more source

An Improved Multi‐Task Pointwise Network for Segmentation of Building Roofs in Airborne Laser Scanning Point Clouds

The Photogrammetric Record, Volume 37, Issue 179, Page 260-284, September 2022., 2022
Zhang et al. propose an improved multi‐task pointwise network to simultaneously segment instances (that is, individual roof planes) and semantics (that is, groups of roof planes with similar geometric shapes) in point clouds. A new roof data‐set (called RoofNTNU) is established by taking standard airborne laser scanning (ALS) point clouds as training ...
Chaoquan Zhang, Hongchao Fan
wiley   +1 more source

Crianças e adolescentes: um perfil demográfico

Coleção Estudos Cariocas, 2005
A média geométrica anual de crescimento deste grupo etário, comparada com a do total da população brasileira, evidencia bem sua tendência declinante a partir da década de 60. O que mais impressiona no gráfico é o crescimento negativo do grupo 0 a 14 anos
Alcides Carneiro
doaj   +1 more source

Comparação Entre Média Geométrica e Médias Ponderadas no Cálculo de Notas em Disciplinas Conjugadas de Química

Educación Química, 2018
O termo avaliação pode assumir diversos significados quando se considera o senso comum e os diversos entendimentos existentes no meio escolar. Nessa perspectiva existe uma gama de teorias a respeito do significado conceitual do termo na tentativa de ...
Anselmo E. de Oliveira, Aparecido R. de Souza, Marlon HFB Solares   +2 more
doaj   +1 more source