Results 81 to 90 of about 10,641 (265)

Predição da estrutura diamétrica de espécies comerciais de terra firme da amazônia por meio de matriz de transição

Ciência Florestal, 2002
This research was originated from a data base of two 100% inventories accomplished in 1984 and 2000 on a same area of 576 hectares of primary tropical forest, located in the National Forest of Tapajós, Belterra, Pará, Brazil.The objective of this ...
Ulisses Cunha Silva da, Sebastião Machado do Amaral, Afonso Filho Figueiredo, Carlos Roberto Sanquetta   +3 more
doaj  

SPATIAL STRUCTURE OF Theobroma subincanumMart. AND Theobromaspeciosum Willd. ex Spreng.IN THE PARQUE NACIONAL DO JURUENA, MATO GROSSO STATE, BRAZIL

Revista Árvore
Analysis of the spatial distribution is a very useful tool to understand the ecological behavior of the species in that it provides information that underlies management strategies and influences the population structure.
Juliana de Freitas Encinas Dardengo, Ana Aparecida Bandini Rossi, Carolina Joana da Silva, Marcos Silveira   +3 more
doaj   +1 more source

Stand structure indices as tools to support forest management: an application in Trentino forests (Italy)

Journal of Forest Science, 2013
Stand structure and species diversity are two useful parameters to provide a synthetic measure of forest biodiversity. The stand structure is spatial distribution, mutual position, diameter and height differentiation of trees in a forest ecosystem and it
F. Pastorella, A. Paletto
doaj   +1 more source

Computer circuit card puller [PDF]

, 1981
The invention generally relates to hand tools, and more particularly to an improved device for facilitating removal of printed circuit cards from a card rack characterized by longitudinal side rails arranged in a mutually spaced parallelism and a ...
Sawyer, R. V., Szuwalski, B.
core   +1 more source

Screening for lung cancer: A systematic review of overdiagnosis and its implications

Molecular Oncology, EarlyView.
Low‐dose computed tomography (CT) screening for lung cancer may increase overdiagnosis compared to no screening, though the risk is likely low versus chest X‐ray. Our review of 8 trials (84 660 participants) shows added costs. Further research with strict adherence to modern nodule management strategies may help determine the extent to which ...
Fiorella Karina Fernández‐Sáenz, Laura de la Torre‐Perez, David R Baldwin, Carlijn van der Aalst, Mangesh Thorat, David Ritchie, Andre L Carvalho, Carolina Espina, Ivan Solà, Carlos Canelo‐Aybar, Moira Magdalena Pissinis, Pablo Alonso‐Coello, Ana Carolina Pereira Nunes Pinto   +12 more
wiley   +1 more source

Recuperación estructural en bosques sucesionales andinos de Porce (Antioquia, Colombia)

Revista de Biología Tropical, 2010
Lugares susceptibles a perturbaciones naturales o antrópicas pueden recuperar la cobertura boscosa. La sucesión tropical puede ser afectada por factores tales como perturbaciones, distancia al bosque original, topografía y clima local.
Adriana P Yepes, Jorge I del Valle, Sandra L Jaramillo, Sergio A Orrego   +3 more
doaj  

Distribution of Energy Density and Optimization on the Surface of the Receiver for Parabolic Trough Solar Concentrator

International Journal of Photoenergy, 2015
The geometrical optics model about the offset effect of solar rays by the thickness of concentrating mirror and the diametric solar model were established.
Fei Chen, Ming Li, Peng Zhang
doaj   +1 more source

Alteração estrutural de áreas de florestas exploradas convencionalmente em planos de manejo, nos domínios de floresta Atlântica, Minas Gerais, Brasil Structural changes in conventionally exploited forest areas in management plans, in the Atlantic florest domain, Minas Gerais state, Brazil

Revista Árvore, 2007
Este estudo teve como objetivo analisar as alterações nas estruturas horizontal, diamétrica e interna em áreas de planos de manejo florestal exploradas convencionalmente.
Danilo José da Silva Coelho, Agostinho Lopes de Souza, Carlos Pedro Boechat Soares, João Augusto Alves Meira Neto, Helio Garcia Leite   +4 more
doaj   +1 more source

Linear magnetic bearing [PDF]

, 1983
A linear magnetic bearing system having electromagnetic vernier flux paths in shunt relation with permanent magnets, so that the vernier flux does not traverse the permanent magnet, is described.
Studer, P. A.
core   +1 more source

Survivin and Aurora Kinase A control cell fate decisions during mitosis

Molecular Oncology, EarlyView.
Aurora A interacts with survivin during mitosis and regulates its centromeric role. Loss of Aurora A activity mislocalises survivin, the CPC and BubR1, leading to disruption of the spindle checkpoint and triggering premature mitotic exit, which we refer to as ‘mitotic slippage’.
Hana Abdelkabir, Shalitha Wickrama Arachchige, Sally P. Wheatley   +2 more
wiley   +1 more source