Results 11 to 20 of about 222,440 (307)

Análise técnica e econômica do forwarder em três subsistemas de colheita de florestas de eucalipto Technical and economic analysis of a forwarder under three eucalyptus forest harvest subsystems

open access: yesRevista Árvore, 2004
O objetivo deste trabalho foi avaliar técnica e economicamente o forwarder em três subsistemas de colheita em florestas de eucalipto. A análise técnica englobou um estudo de tempos e movimentos e de produtividade.
Luciano José Minette   +4 more
doaj   +1 more source

Road network optimization using heuristic and linear programming

open access: yesJournal of Forest Science, 2010
To minimize the cost of logging, it is necessary to optimize the road density. The aim of this study was to determine optimal road spacing (ORS) in Northern Austria. The stepwise regression method was used in modelling.
M. R. Ghaffariyan   +5 more
doaj   +1 more source

Harvesting technology and the cost of fuel chips from early thinnings

open access: yesSilva Fennica, 2008
This study compared and analyzed the procurement cost of whole tree chips when using supply chains based on comminution at the roadside landing or at the terminal. It also identified the bottlenecks of the most common logging systems used in Finland. The
Laitila, Juha
doaj   +1 more source

Feasibility of source-free DAS logging for next-generation borehole imaging

open access: yesScientific Reports, 2022
Characterizing and monitoring geologic formations around a borehole are crucial for energy and environmental applications. However, conventional wireline sonic logging usually cannot be used in high-temperature environments nor is the tool feasible for ...
David Li   +5 more
doaj   +1 more source

EVALUASI LOGGING TRUK BERDASUKAN UMUR PAKAI, PRODUKTMTAS DAN BIAYAANGKUTAN

open access: yesJurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
In mMy forest coneuions  today, old loggin1 truelu of j   - 9 yean old ore. being med.  Thae  truda  will be continuo,ly uud  "'  long, a  ,,,,,,p,a.ra  ore available Md the equipment can be repaired.
Sukanda Sukanda
doaj   +1 more source

Ultrasonic Logging Image Denoising Based on CNN and Feature Attention

open access: yesIEEE Access, 2021
Various kinds of noise will be produced during the process of ultrasonic logging in high temperature and high-pressure environment under oil wells, which is blurring the logging image.
Su Li   +5 more
doaj   +1 more source

Selective-logging and oil palm: Multitaxon impacts, biodiversity indicators, and trade-offs for conservation planning [PDF]

open access: yes, 2014
Strong global demand for tropical timber and agricultural products has driven large-scale logging and subsequent conversion of tropical forests. Given that the majority of tropical landscapes have been or will likely be logged, the protection of ...
Benedick, S   +17 more
core   +2 more sources

STUDI KASUS KERAPATAN JALAN HUTAN DI DUA PERUSAHAAN HUTAN DI JAMBI

open access: yesJurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
A study on the forest road densities was carried out at two logging companies in Jambi in 1990. The objective is to find out the information of forest road densities realized by the companies.
Dulsalam Dulsalam
doaj   +3 more sources

ANALISIS BIAYA PEMANENAN KAYU BULAT SISTEM KEMITRAAN HPH - KOPERASI DESA DI KALIMANTAN TENGAH

open access: yesJurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
To minimize illegal logging in natural production forest, one of concession forest in Kalimantan has initiated to do a joint bussines logging with a community wellfare cooperative. The aim of the study was to measure productivity of extraction, operation
Zakaria Basari
doaj   +1 more source

Minimizing Residual Stand Damage and Felling Cost Using Lowest Possible Felling Technique (a Case Study in One Logging Company in West Kalimantan) [PDF]

open access: yes, 2005
The implementation of felling technique in logging companies is not yet carried out efficiently and appropriately. Study on the lowest possible felling technique (LPFf) is considered to be important to reduce residual stand damage and felling cost ...
Krisdianto, K. (Krisdianto)   +1 more
core   +2 more sources

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