نتایج جستجو برای: wood forest products
تعداد نتایج: 426655 فیلتر نتایج به سال:
Forests are vital to the world's ecological, social, cultural and economic well-being yet sustainable provision of goods and services from forests is increasingly challenged by pressures such as growing demand for wood and other forest products, land conversion and degradation, and climate change. Intensively managed, highly productive forestry incorporating the most advanced methods for tree b...
With the aim of wood production with negligible negative effects on biodiversity and ecosystem processes, a silvicultural practice of selective logging with natural regeneration has been implemented in European beech forests (Fagus sylvatica) during the last decades. Despite this near-to-nature strategy, species richness of various taxa is lower in these forests than in unmanaged forests. To de...
This paper presents the study of one optimization of the production planning model in the supply chain wood Industry: market, sawmill and harvest, multiperiod and a planning horizon of two years, which means of maximizing the profitability of a mix of wood products, incorporating an approach of game theory. This approach would incorporate the decisions of corporate governance the trade-off of t...
BACKGROUND The new rules for the Land Use, Land Use Change and Forestry sector under the Kyoto Protocol recognized the importance of Harvested Wood Products (HWP) in climate change mitigation. We used the Tier 2 method proposed in the 2013 IPCC KP Supplement to estimate emissions and removals from HWP from 1990 to 2030 in EU-28 countries with three future harvest scenarios (constant historical ...
Before trying to develop an automated inspection system for pallet part grading we analyzed the economics of such a system. Our results suggest that higher quality pallets produced by grading and sorting pallet parts would be attractive to both manufacturers and their customers, who would have to pay increased prices for higher quality pallets. Reductions in costper-trip for the pallet purchase...
BACKGROUND Forests of the Midwest U.S. provide numerous ecosystem services. Two of these, carbon sequestration and wood production, are often portrayed as conflicting. Currently, carbon management and biofuel policies are being developed to reduce atmospheric CO2 and national dependence on foreign oil, and increase carbon storage in ecosystems. However, the biological and industrial forest carb...
The optimal cutting of lumber into dimension parts for products like furniture, windows, and mouldings is a challenging problem due to the almost infinite number of possible cutting patterns. Yet, finding the optimal pattern that utilizes the available lumber most efficiently is of paramount importance, as lumber costs are a major expense of producers of solid wood parts. This study used data d...
Six potentially important wood adhesives for gluing southern pine and white oak flakeboards were evaluated for their perfonnances in steam-injection pressing and conventional platen pressing. Of the six resins tested, polyisocyanate resin perfonned well in both steam injection and conventional platen pressings. Phenol-fonnaldehyde (PF) and melamine urea-fonnaldehyde (MUF) resins perfonned poorl...
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