Results 21 to 30 of about 1,631 (189)

Ecuaciones locales y generalizadas de altura-diámetro para pino radiata (Pinus radiata) [PDF]

Bosque (Valdivia), 2006
Esta investigacion analizo dos tipos de estrategias de modelamiento de la relacion altura-diametro (h/d) para ser utilizadas en labores de inventario. La informacion requerida se obtuvo de 3.492 parcelas temporales establecidas en 105 rodales de precosecha en la provincia de Arauco, VIII Region.
Trincado, Guillermo, Leal D, Cristián
openaire   +2 more sources

Multi‐echo quantitative susceptibility mapping: how to combine echoes for accuracy and precision at 3 Tesla

Magnetic Resonance in Medicine, Volume 88, Issue 5, Page 2101-2116, November 2022., 2022
Purpose To compare different multi‐echo combination methods for MRI QSM. Given the current lack of consensus, we aimed to elucidate how to optimally combine multi‐echo gradient‐recalled echo signal phase information, either before or after applying Laplacian‐base methods (LBMs) for phase unwrapping or background field removal.
Emma Biondetti, Anita Karsa, Francesco Grussu, Marco Battiston, Marios C. Yiannakas, David L. Thomas, Karin Shmueli   +6 more
wiley   +1 more source

A phylogenetic survey of the ascomycete genus Arthrorhaphis (Arthrorhaphidaceae, Lecanoromycetes) including new species in Arthrorhaphis citrinella sensu lato

TAXON, Volume 71, Issue 5, Page 936-962, October 2022., 2022
Abstract The genus Arthrorhaphis is a group of ascomycetes comprising lichenised and non‐lichenised taxa from temperate to arctic‐alpine regions in both hemispheres. Nine species and two infraspecific taxa are currently recognised. Their delimitation, inter‐relationships, and phylogenetic placement remain poorly understood.
Andreas Frisch, Yoshihito Ohmura, Håkon Holien, Mika Bendiksby   +3 more
wiley   +1 more source

Commodity risk assessment of Acer palmatum plants grafted on Acer davidii from China

EFSA Journal, Volume 20, Issue 5, May 2022., 2022
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’. This Scientific Opinion covers plant health risks posed by 2‐year‐old bare rooted plants for planting of ...
EFSA Panel on Plant Health (PLH), Claude Bragard, Paula Baptista, Elisavet Chatzivassiliou, Francesco Di Serio, Josep Anton Jaques Miret, Annemarie Fejer Justesen, Alan MacLeod, Christer Sven Magnusson, Panagiotis Milonas, Juan A Navas‐Cortes, Stephen Parnell, Roel Potting, Philippe Lucien Reignault, Emilio Stefani, Hans‐Hermann Thulke, Wopke Van der Werf, Antonio Vicent Civera, Jonathan Yuen, Lucia Zappalà, Andrea Battisti, Hugo Mas, Daniel Rigling, Massimo Faccoli, Giovanni Iacopetti, Alžběta Mikulová, Olaf Mosbach‐Schulz, Fabio Stergulc, Paolo Gonthier   +28 more
wiley   +1 more source

Commodity risk assessment of bonsai plants from China consisting of Pinus parviflora grafted on Pinus thunbergii

EFSA Journal, Volume 20, Issue 2, February 2022., 2022
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver a scientific opinion on the risk posed by bonsai plants from China consisting of Pinus parviflora grafted on Pinus thunbergii taking into account the available scientific information, including the technical information provided by China.
EFSA Panel on Plant Health (PLH), Claude Bragard, Paula Baptista, Elisavet Chatzivassiliou, Francesco Di Serio, Josep Anton Jaques Miret, Annemarie Fejer Justesen, Alan MacLeod, Christer Sven Magnusson, Panagiotis Milonas, Juan A Navas‐Cortes, Stephen Parnell, Roel Potting, Philippe Lucien Reignault, Emilio Stefani, Hans‐Hermann Thulke, Wopke Van der Werf, Antonio Vicent Civera, Jonathan Yuen, Lucia Zappalà, Andrea Battisti, Hugo Mas, Daniel Rigling, Massimo Faccoli, Giovanni Iacopetti, Alžběta Mikulová, Olaf Mosbach‐Schulz, Fabio Stergulc, Paolo Gonthier   +28 more
wiley   +1 more source

Análisis del proceso de maceración para el pino radiata

Ciencia & Investigación Forestal, 2021
El objetivo del presente trabajo es la determinación de tiempos de absorción de calor, propios de la especie Pino Radiata, para trozas sometidas a un proceso de maceración previa al debobinado. Se utiliza agua como medio de calefacción. Los resultados indican que los tiempos de calentamiento para distintas temperaturas del fluido de calefacción de los ...
openaire   +2 more sources

Resistencia al corte en uniones de madera pino radiata

, 2023
Esta base de datos presenta resultados experimentales de la resistencia al corte en uniones de madera de pino radiata, usando conectores simples y dentados, con el objetivo de determinar el aumento de la resistencia de la unión al utilizar el ...
Gresve, Moisés, Maldonado, Javier, Guzmán, Carlos Felipe, Pérez, Eduardo   +3 more
core   +1 more source

Patterns of permit requests and issuance for regulated alien and invasive species in South Africa for the period 2015‐2018

African Journal of Ecology, Volume 58, Issue 3, Page 514-528, September 2020., 2020
Abstract Invasive species typically establish in areas outside their natural distribution through accidental introduction and accidental release or escape. Some species are introduced legally for economic and social benefits such as recreational hunting, the pet trade and research through established permitting processes driven by appropriate laws and ...
Moleseng C. Moshobane, Livhuwani R. Nnzeru, Khathutshelo Nelukalo, Natasha P. Mothapo   +3 more
wiley   +1 more source

El monocultivo de pino radiata en el País Vasco: origen y claves de permanencia de un sistema de explotación contrario al desarrollo sostenible

Estudios Geográficos, 2008
El País Vasco dispone de un importante patrimonio forestal; sin embargo, una parte sustancial de los montes se dedican al monocultivo del pino radiata —Pinus radiata D.
Mª José Ainz Ibarrondo
doaj   +1 more source

Determinación de la resistencia de postes de pino radiata

Ciencia & Investigación Forestal, 2021
En diferentes países del mundo se hace uso, desde tiempo atrás, de los postes de madera, ya sea en la construcción o en tendidos eléctricos, de teléfonos, etc. En Chile últimamente se ha manifestado un aumento en el uso de los postes y las empresas forestales se han visto atraídas por el mercado de este producto, tanto para uso interno como para el ...
openaire   +2 more sources