Results 31 to 40 of about 3,007 (139)

Force Alignment of the Ends of Two-Tiered Package Rafting Units during their Formation in Water

Лесной журнал
Promising technologies for transporting round timber from remote areas involve, after passing through shallow water areas, forming small-sized packages into two-tiered package units without violating their integrity. The devices designed for this purpose
Sergey V. Posypanov, Sergey P. Karpachev
doaj   +1 more source

Semi-empirical estimation of log taper using stem profile equations

Journal of Forest Science, 2021
In January 2019 the forest industry in Ukraine adopted European standards for measuring and grading of round wood based on mid-point diameters, which caused major discrepancies from traditionally used estimates of timber volume using top diameters.
Andrii Bilous, Viktor Myroniuk, Viktor Svynchuk, Oleksandr Soshenskyi, Oleksandr Lesnik, Yaroslav Kovbasa   +5 more
doaj   +1 more source

Nut Production in Bertholletia excelsa across a Logged Forest Mosaic: Implications for Multiple Forest Use. [PDF]

PLoS ONE, 2015
Although many examples of multiple-use forest management may be found in tropical smallholder systems, few studies provide empirical support for the integration of selective timber harvesting with non-timber forest product (NTFP) extraction.
Cara A Rockwell, Manuel R Guariguata, Mary Menton, Eriks Arroyo Quispe, Julia Quaedvlieg, Eleanor Warren-Thomas, Harol Fernandez Silva, Edwin Eduardo Jurado Rojas, José Andrés Hideki Kohagura Arrunátegui, Luis Alberto Meza Vega, Olivia Revilla Vera, Roger Quenta Hancco, Jonatan Frank Valera Tito, Betxy Tabita Villarroel Panduro, Juan José Yucra Salas   +14 more
doaj   +1 more source

Shear and longitudinal modulus of elasticity in Corymbia citriodora round timber beams

Vértices, 2013
This study aimed to evaluate, with the support of the three points static bending test, led nondestructively, the values of the shear (G) and longitudinal (E) modulus of elasticity in Corymbia citriodora structural round timber beams in order to verify ...
André Luiz Zangiácomo, André Luis Christoforo, Francisco Antonio Rocco Lahr   +2 more
doaj   +1 more source

The impact of forest tenure reform on timber supply expansion: evidence from China

Frontiers in Forests and Global Change
Against the backdrop of rising uncertainty in global timber supply and increasing volatility in international timber prices, understanding whether and how property-rights reforms can stimulate timber supply growth is of both theoretical and policy ...
Zhenghuang Shi, Han Yu, Junfeng Chen, Guoxing Huang   +3 more
doaj   +1 more source

Analysis of the Impact of Cereal Product Import-Export on GDP in Romania [PDF]

Annals of Dunarea de Jos University. Fascicle I : Economics and Applied Informatics, 2019
Imports and exports have a major influence on Gross Domestic Product. In this study it was made a non-linear regression model based on the Cobb-Douglas function. Production function is used in many economic researches.
Geanina COLAN, Tincuta VRABIE, Aura COLAN, Laurentiu COROBAN   +3 more
doaj   +1 more source

Effect of shear and rotatory inertia on the bending vibration method without weighing specimens

Journal of Wood Science, 2020
This study examines the effect of shear and rotatory inertia on the accuracy of the vibration method with additional mass (VAM). Bending vibration tests were performed for rectangular bars with a width of 30 mm, thicknesses ranging from 5 to 60 mm, and a
Yoshitaka Kubojima, Satomi Sonoda, Hideo Kato, Masaki Harada   +3 more
doaj   +1 more source

Sustainable Management of Tropical Forests Can Reduce Carbon Emissions and Stabilize Timber Production

Frontiers in Environmental Science, 2016
The REDD+ scheme of the United Nations Framework Convention on Climate Change has provided opportunities to manage tropical forests for timber production and carbon emission reductions.
Nophea Sasaki, Gregory Paul Asner, Yude Pan, Wolfgang Knorr, Patrick B. Durst, Hwan Ok Ma, Issei Abe, Issei Abe, Andrew John Lowe, Lian Pin Koh, Francis E. Putz   +10 more
doaj   +1 more source

Private vs. Community Management Responses to De-Collectivization: Illustrative Cases from China

International Journal of the Commons, 2020
Over the last several decades, China has undergone several distinct episodes of collectivization and de-collectivization of forest property rights. China’s latest round of collective forest property reforms, launched in 2003, have promoted individual ...
Jinlong Liu, Jiayun Dong, Hexing Long, Tuoyuan Xu, Louis Putzel   +4 more
doaj   +1 more source

The low-cost technical system of rural sustainable wood construction and its suitability based on the small-diameter round timber of fast-growing Northeast Larch

Case Studies in Construction Materials
Aiming to address the imbalance between ''sustainable advantages of environmental and cultural development'' and ''economic benefits'' in the development of rural wood structure architecture in China, as well as the disparity in development between ...
Ying Wu, Hongpeng Xu, Jianmei Wu, Yuncheng Ji   +3 more
doaj   +1 more source