Management and Economics wood
Meisam Mehri Charvadeh; Shademan Pourmousa; Ajang Tajdini; Abbas Tamjidi; Vahid reza ُSafdari
Abstract
Background and purpose: Cellulosic industry organizations try to establish appropriate strategies to perform the main production processes and provide services to customers by improving productivity and reducing costs. Environmental concerns, energy scarcity, depletion of natural resources, and increased ...
Read More
Background and purpose: Cellulosic industry organizations try to establish appropriate strategies to perform the main production processes and provide services to customers by improving productivity and reducing costs. Environmental concerns, energy scarcity, depletion of natural resources, and increased competition among organizations have made the study of a sustainable supply chain cost-effective for market success. The purpose of this study is to identify effective indicators for a stable supply chain sustainability model in the cellulosic industry with multi-objective decision making methods.Research Method: The present study is an exploratory research in terms of orientation, applied and in terms of method, quantitative-qualitative, which has used the data theory strategy of the foundation. The data collection tool in the qualitative section aimed at identifying the components and sub-components of stable supply chain sustainability, in-depth and semi-structured interviews with purposive sampling method. In the quantitative part of the research, a researcher-made questionnaire was designed. The obtained data were used to measure variables and weight by Vickor and Shannon entropy methods.Results: Eleven main components and thirty sub-components were identified by qualitative studies for stable supply chain stability. By examining the relationships and ranking of indices using quantitative methods, green storage indices with a numerical value of 0.133 and continuous improvement with a numerical value of 0.134 were considered as the top components. According to the Vickor index, the components of green warehousing, quality improvement, economic stability, intra-organizational pressures, information technology capabilities, company commitment and strategy, logistics optimization, social values, institutional pressures, strategic supplier cooperation and environmental protection, respectively. Stable supply chain stability affects the cellulose industry.Conclusion : Due to the shortest distance to achieve sustainability in green warehousing and quality improvement, cellulose industry organizations in the country can use the results of this study to increase productivity and reduce organizational costs ......
Composite wood products
Abbas Tamjidi; Mohammad Mehdi Faezipour; Kazem Doosthoseini; Ghanbar Ebrahimi; Habibollah Khademieslam
Abstract
In this study, the effects of mat moisture content and press temperature on physical and mechanical properties of three layered oriented strand boards were evaluated. Two levels of mat moisture content 7% and 10% and three levels of press temperature 180 ˚c , 200 ˚c and 220 ˚c were applied and 12 ...
Read More
In this study, the effects of mat moisture content and press temperature on physical and mechanical properties of three layered oriented strand boards were evaluated. Two levels of mat moisture content 7% and 10% and three levels of press temperature 180 ˚c , 200 ˚c and 220 ˚c were applied and 12 mm in nominal thickness laboratory boards were made from mixture of three clones of ten-year-old hybrid poplar ( populous euramericana vernirubensis, p. e. I-214, P. e. 561/41) while the strands on the surface layers are aligned in the long direction of the board and the middle layer strands are cross aligned to the surface layers. In all treatments, board targeted density of 0/7 g/cm3 and press time of 8 min and phenol-formaldehyde resin (PF) content of 7% based on the oven dry weight of the strands were held constant. The mechanical and physical properties of the boards were measured as defined in relevant European standards EN 300 for OSB/1 and OSB/2. Overall results showed that all boards made from above mentioned conditions exceed the EN 300 standards for MOR, MOE, IB and TS24. The bending properties (MOR and MOE) of boards were significantly improved as the mat moisture content increased from 7 to 10%. The highest MOR was achieved at 10% mat moisture content and 220 ˚c press temperature and the highest MOE was achieved at 10% mat moisture content and 180 ˚c press temperature. The Modulus of Rupture (MOR) and Thickness swelling (TS24) were significantly improved as the press temperature increased from 180 ˚c to 220 ˚c. The lowest TS24 was achieved at 7% mat moisture content and 220 ˚c press temperature and the highest IB was achieved at 7% mat moisture content and 200 ˚c press temperature.
