Results 41 to 50 of about 51,423 (179)

Nailed Mortised-Plate Connections for Small-Diameter Round Timber [PDF]

, 2009
In an effort to encourage the development of value-added engineered applications for smalldiameter round timber, research is being conducted at the US Forest Products Laboratory to develop and verify design guidelines for connections with specific ...
Begel, Marshall, Shim, Kug-Bo, Wolfe, Ronald W.   +2 more
core   +1 more source

Simulated elephant foraging alters tree root exudation rates: Species‐specific responses and implications for belowground carbon dynamics in tropical forests

PLANTS, PEOPLE, PLANET, EarlyView.
Asian elephants play crucial roles in ecosystem functioning, and their interactions with plants influence above‐ and belowground carbon cycling. We tested whether their mechanically destructive foraging triggers short‐term, stress‐induced shifts in tree root exudation, an underappreciated pathway linking herbivory to belowground carbon processes.
Pratibha Khatri, Bimal Sharma, Lisa Ong, Ahimsa Campos‐Arceiz   +3 more
wiley   +1 more source

Quality control and productivity in oak timber - from forest to the primary processing [PDF]

, 2009
Oak timber is valuated for its beauty, good mechanical properties and natural durability and may have multiple uses. An understanding of the factors that affect oak timber quality is essential.
Carvalho, João P. F., Santos, Joana, Santos, José António dos   +2 more
core  

Wall‐to‐wall Amazon forest height mapping with Planet NICFI, Aerial LiDAR, and a U‐Net regression model

Remote Sensing in Ecology and Conservation, EarlyView.
Tree canopy height is a key indicator of forest biomass and structure, yet accurate mapping across the Amazon remains challenging. Here, we generated a canopy height map of the Amazon forest at ~4.8 m resolution using Planet NICFI imagery and a deep learning U‐Net model trained with airborne LiDAR data.
Fabien H. Wagner, Ricardo Dalagnol, Griffin Carter, Mayumi C. M. Hirye, Shivraj Gill, Le Bienfaiteur Sagang Takougoum, Samuel Favrichon, Michael Keller, Jean P. H. B. Ometto, Lorena Alves, Cynthia Creze, Stephanie P. George‐Chacon, Shuang Li, Zhihua Liu, Adugna Mullissa, Yan Yang, Erone G. Santos, Sarah R. Worden, Martin Brandt, Philippe Ciais, Stephen C. Hagen, Sassan Saatchi   +21 more
wiley   +1 more source

Gristhorpe Man: an Early Bronze Age log-coffin burial scientifically defined [PDF]

, 2010
A log-coffin excavated in the early nineteenth century proved to be well enough preserved in the early twenty-first century for the full armoury of modern scientific investigation to give its occupants and contents new identity, new origins and a new ...
Batt, Cathy, Carter, Elizabeth, Edwards, Howell G M, Evans, Adrian, Hargreaves, Michael, Heron, Carl, Horsley, Tim, Janaway, Rob, Knüsel, Christopher J, Lynnerup, Niels, Melton, Nigel, Montgomery, Janet, Needham, Stuart, Northover, Peter, O'Connor, Sonia, Ogden, Alan, Parker Pearson, Mike, Schmidt, Armin, Sheridan, J A, Taylor, Timothy, Wastling, Vaughan, Wilson, Andrew   +21 more
core   +3 more sources

On the compatibility of single‐scan terrestrial LiDAR with digital photogrammetry and field inventory metrics of vegetation structure in forest and agroforestry landscapes

Remote Sensing in Ecology and Conservation, EarlyView.
The single‐scan approach to terrestrial laser scanning (TLS) and the self‐terrain‐normalized form of drone‐based digital aerial photogrammetry (DAP) offer practical options for rapid assessment of the vegetation structure in tropical landscapes.
Magnus Onyiriagwu, Nereoh Leley, Caleb W. T. Ngaba, Anthony Macharia, Henry Muchiri, Abdalla Kisiwa, Martin Ehbrecht, Delphine Clara Zemp   +7 more
wiley   +1 more source

Monitoring of historical structural materials with computed tomography

Structural Concrete, EarlyView.
Abstract Computed tomography (CT) is an excellent tool to solve certain engineering problems connected to material science (such as sulfate swelling, internal degradation due to freezing, and alkali silicate swelling) and to understand specific processes (frost peeling, acid action).
Kristóf Csorba, Kristóf Kapitány, Zsolt Cimer, Viktor Hlavička, András Biró, Éva Lublóy   +5 more
wiley   +1 more source

An Ecological Study of Timberline and Alpine Areas, Mount Lincoln, Park County, Colorado [PDF]

, 1969
During the short alpine growing season of 1945 the authors had the opportunity of studying conditions and biota on Mount Lincoln, Park County, Colorado, in an attempt to evaluate the ecological conditions and animal communities of the area.
Blake, Abigail K., Blake, Irving H.
core   +1 more source

The Pier Luigi Nervi's concrete structure of Palazzetto dello Sport: Modeling and dynamic characterization

Structural Concrete, EarlyView.
Abstract This paper presents a numerical and experimental study aimed at the modeling and dynamic characterization of the reinforced concrete structure of the Palazzetto dello Sport in Rome, designed and by Pier Luigi Nervi with Annibale Vitellozzi, and built by Nervi & Bartoli contractors in 1956‐57.
Jacopo Ciambella, Gianluca Ranzi, Francesco Romeo   +2 more
wiley   +1 more source

A guide to manufacturing rotary veneer and products from small logs [PDF]

, 2017
This manual on the production of rotary wood veneer and associated manufacturing of veneer-based products draws on the results from completed ACIAR projects.
Bailleres, Henri, Leggate, William, McGavin, Robert L.   +2 more
core   +1 more source