Management and Economics wood
Amir Reza Taheri; Abbas Tamjidi; Ajang Tajdini
Abstract
In this research, the effect of marketing capabilities, innovations, learning of employees on the performance of wooden office furniture companies with the approach of structural equations has been investigated. The statistical population of this research consists of managers and engineers working in ...
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In this research, the effect of marketing capabilities, innovations, learning of employees on the performance of wooden office furniture companies with the approach of structural equations has been investigated. The statistical population of this research consists of managers and engineers working in wooden office furniture companies located in industrial towns in Tehran and Alborz provinces. Sampling method was classified and Crecy-Morgan table was used to determine the sample size (92 people). Initial effective indicators were selected by studying the available sources and the conceptual model of the research considering the performance of the organization (company) as a dependent variable and marketing, innovation and learning variables as independent variables. The main tool for collecting information for this research was a questionnaire. Correlation and confirmatory factor analysis and structural equation modeling based on partial least squares method were used to investigate the research hypotheses and analyze the structural relationships between variables. The results showed that innovation, marketing and learning capabilities had a positive effect on the performance of wooden furniture companies. In addition, these capabilities complement 96.9% of the changes in the dependent variable of the company's performance. The results of the model quality evaluation index show that marketing capability (strong effect), innovation capability (medium effect), learning capability (weak effect) have the greatest impact on company performance. Finally, the results of this study remind the various companies producing wood furniture industry products that are constantly looking to export their goods that, unlike the somewhat non-competitive domestic market, to compete with other companies in target markets, should try. Due to factors such as marketing, innovation and learning, improve products quality, reduce costs and ultimately increase company performance.
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 ...
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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 ......
Ahmadreza Arabi; Ajang Tajdini; Shademan Pourmousa; Mohammad Naghi Imani; Amir lashgari
Abstract
In order to achieve the higher competitive advantage, identifying and prioritizing the various factors of sustainable supply chain management and its relationship with the performance of the companies producing home and office furniture, have been selected as the main purpose ...
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In order to achieve the higher competitive advantage, identifying and prioritizing the various factors of sustainable supply chain management and its relationship with the performance of the companies producing home and office furniture, have been selected as the main purpose of this study. The statistical population in both the qualitative and quanitative parts consisted of experts, and specialists in the field of sustainable supply chain management and the company performance, including managers and operational engineers of furniture manufacturing companies in Tehran province. In the qualitative part, the interview method and content analysis were used to identify effective factors and in the quantitative part, a reseracher – made questionnaire based on Likert- scale was used to collect data and Pearson correlation and Friedman tests were used to understand the causal relationships between research variables and prioritize them. The validity and reliability of research tools in both parts were tested and confirmed using different methods. The results showed that supply chain management practices have a direct and positive effect on the home and office wooden furniture firms. Also in the sustainable supply chain management, the dimensions of delay time, product cost and design and adaptation to the environment were given first to third priority. Also in terms of performance, the dimensions of rapid response and the proposed changes of customers in the responsible volume, investment returns and customers' preference to buy from top names were given first to third priority.
Farzin Khasipour; Ajang Tajdini; Shademan Pourmousa; Mehran Roohnia; Vahid reza Safdari
Abstract
The purpose of this study was to identify the factors affecting the production companies in the laminate flooring industry in terms of competitiveness using nonparametric tests. The statistical population of this research includes experts and specialists in two areas of competitiveness and structure ...
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The purpose of this study was to identify the factors affecting the production companies in the laminate flooring industry in terms of competitiveness using nonparametric tests. The statistical population of this research includes experts and specialists in two areas of competitiveness and structure of the laminate flooring industry; managers in companies producing and importing this product and customers of laminate flooring. The sampling method was randomly classified. The Cochran formula was used to determine the sample size. In order to determine the effective indicators while studying the available sources and using the Porter model, as a basic model and after conducting the necessary studies and factor analysis, the conceptual model of the research was designed in form of three main criteria including environmental factors, intra-organizational factors and factors creating perceptual value as well as 9 sub-criteria. After conducting the necessary studies, preparing a researcher-made questionnaire and data factor analysis, the conceptual research model was designed and by conducting a field research and analyzing the results using student's t-test and Friedman test, the relationship between laminate flooring competitiveness with 3 criteria and 9 sub-criteria was examined. The reliability of the data was confirmed by Cronbach's alpha method. The mean of all studied indices was evaluated as moderate based on the results of descriptive statistics. Based on the results of the t-test, environmental factors, intra-organizational factors and factors creating perceptual value have a more than average role on competitiveness. Also, based on Friedman test, prioritization of indicators was obtained respectively based on environmental factors, factors creating perceptual value and intra-organizational factors.
Elham Gudarzi; Ajang Tajdini; Shademan Pourmousa; Ahmad Jahan latibari; Mehran Roohnia
Abstract
This study aims to identify the expectations and preferences of consumers of home and office furniture using nonparametric tests. The statistical population consists of customers of the home and office wood furniture industry in Tehran and a stratified sampling method was used in this study. Cochran ...
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This study aims to identify the expectations and preferences of consumers of home and office furniture using nonparametric tests. The statistical population consists of customers of the home and office wood furniture industry in Tehran and a stratified sampling method was used in this study. Cochran formula was used to determine the sample size. To determine the effective indicators, the researcher studied the available resources and the Van et al.’s model as the basic model and conducted a factor analysis to design the conceptual model of the research. Using a field research, the student t-test and Friedman test, she examined the relationship between consumer preferences and 5 factors and 17 subindices. Results: The reliability of the questionnaire was confirmed by the data obtained from 100 questionnaires using Cronbach's alpha. The results of descriptive statistics indicated that the mean of all the indices was at an average level. The minimum and maximum values and the standard deviation showed that there were no outliers. The results of inferential statistics in SPSS software indicated that as the significance level for Kolmogorov-Smirnov test was greater than 5%, all variables are assumed to be normally distributed. The results indicated a significant relationship between all indicators and consumer preferences regarding home and office furniture. The results of the one-sample t-test indicated that consumers consider corporate responsibility factors, product and vendor’s characteristics and internal factors above average while they consider environmental and safety factors at the average level in the purchase of home and office furniture. The results of the Friedman test indicated the priorities as follows: vendor’s characteristics, internal factors, corporate responsibility factors, product characteristics and safety and environmental characteristics.
Shahram Badamchizadeh; Ahmad Jahan Latibari; Ajang Tajdini; Shadman Pourmousa; Amir Lashgari
Abstract
The first step in feasibility study of any national mega projects in energy sector is the investigation on the production potential and evaluate the market demand for the product. The success rate of a biofuel project after forecasting supply and demand depends on choosing the appropriate place to produce. ...
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The first step in feasibility study of any national mega projects in energy sector is the investigation on the production potential and evaluate the market demand for the product. The success rate of a biofuel project after forecasting supply and demand depends on choosing the appropriate place to produce. In this respect, factors such as the selection of appropriate production site, environmental, technical, economic and social are among major issues. In this study, autoregressive integrated moving average (ARIMA) model was used for the prediction of bioethanol demand in five sceneries; E5, E10, E15, E20 and E30. The time period up to 1412 is foreseen. The data on agricultural wastes and the present and future potentials for the bioethanol production in different provinces is analyzed. The results indicate that, the average daily consumption of gasoline will increase to 136,922 million liters per day as we reach 1412.The study also shows that there exists the potential for the production of 18.16 million liters of bioethanol which can fulfill the requirement of E5 and E10 by 1412. If we want to implement the E20 and E30 scenario in the country, it is necessary to increase the production of 7 selected products in this research, in the provinces of Khuzestan, Fars, Khorasan Razavi, Golestan, Isfahan, Mazandaran, Tehran, Qazvin and Alborz and Gilan by 62.2 million tons per year by 1412, And consider the effective factor in the success of the project, namely the support of the government and legislators for national mega projects.
mostafa malekygalandooz; Ajang Tajdini
Abstract
Algorithm implementation )TOPSIS( Prioritize Factors Affecting the Entrepreneurial Intent of Wooden Furniture Products Abstract At present, the changes are so quick, that the producers of today's wooden products have to ensure their innovative survival, supply and services, which requires serious and ...
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Algorithm implementation )TOPSIS( Prioritize Factors Affecting the Entrepreneurial Intent of Wooden Furniture Products Abstract At present, the changes are so quick, that the producers of today's wooden products have to ensure their innovative survival, supply and services, which requires serious and practical attention to productive entrepreneurship. When entrepreneurship is accepted as a lifestyle by individuals in a community, that society is developing very rapidly.The work of the furniture business is always looking for change, and it responds to the opportunity to identify and values the viability of the industry,which is evolving and evolving the nature of the wood industry. The present research has tried to investigate the identification and ranking of factors affecting the entrepreneurial production of wooden furniture products, Because the future economic security of the wood industry relies heavily on the quality of entrepreneurship. In this research,descriptive-survey analytical method has been used Research community is the experts, manufacturers, and wood industry entrepreneurs who can help with research by answering questions from the questionnaire. Data were analyzed and ranked using multi-criteria decision-making algorithm (entropy and topsis). The research showed that in the human, economic, law and regulation index, the structure and vitality of the furniture and technical industry, under the indicators of individual entrepreneurial capacity, skilled labor, control over the prices of furniture products, the actual guarantee of the product after sale and design, and Ideas ranked first in the research. key words Wooden furniture products, Entrepreneurial intention, multi-criteria decision, entropy, topsis
Management and Economics wood
Ajang Tajdini; Ahmad Reza Eskandari; Shademan Pourmousa
Abstract
In the present study, we have evaluated the behavior of consumers in the decision-making process to purchase domestic and foreign household furniture. In this study, the statistical population was the total number of household wooden furniture customers, of which 385 were selected based on the table ...
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In the present study, we have evaluated the behavior of consumers in the decision-making process to purchase domestic and foreign household furniture. In this study, the statistical population was the total number of household wooden furniture customers, of which 385 were selected based on the table of Krugis-Morgan and by random sampling method. After conducting initial research and studies, considering the issues raised and the importance of the subject and determination of the research objectives, the 5 latent variables have been identified as cultural, preferential, sales, quality and beauty factors as the effective indicators for purchase of wooden household furniture and selection of imported products in comparison with domestic products were designed. To collect inferential data, a researcher made questionnaire and for library data, the study of resources, theses and research articles in this regard were used. Data were analyzed, by SPSS software in the descriptive statistics and by Lisrel software to determine the relationship between variables for structural equations. The results showed that the research model has been fitted in the first-grade and in the structural model. In measurement model, the measurement indices have created some meaningful factor loadings. This issue shows that this model has correctly been determined from theoretical literature and the criteria of this measurement have been recognized correctly. This caused a high validity of the measurements ‘tools. Also, all the mentioned latent variables and its dimensions as the structures of the proposed structural model effect on customer preferences in the decision-making process of foreign and domestic household wooden furniture purchase.
Physics and Mechanical Wood
Mehran Roohnia; Ahmad Jahanlatibari; Behzad Behnam; Jamshid Zarrinmehr; Mostafa Kohantorabi; Negin Manouchehri; Ajang Tajdini
Abstract
Reaching to the technology of acoustical Tomography and imaging, this project was ordered for facilitating the work for green space researchers and managers in urban standing trees. Comparing the sensors and micro-second timers with those of a certified European device in radial to tangential and longitudinal ...
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Reaching to the technology of acoustical Tomography and imaging, this project was ordered for facilitating the work for green space researchers and managers in urban standing trees. Comparing the sensors and micro-second timers with those of a certified European device in radial to tangential and longitudinal directions showed a good agreement for the Iranian made device. So, a new horizon was opened for the researchers of this approach supported by the local scientific knowledge and technology. Holding this technology, the selected trees concerning the collar defect symptoms were firstly inspected visually, then the visual accuracy was monitored by sonic tomography. Some trees were extremely defected internally, while the visual inspection showed their intactness (9 from 23). Meanwhile some trees holding visually defect signs were proved to be intact after carrying the tomography images (up to 10 from 53). It is concluded that the visual tree defect inspection is not satisfactory for saving or omitting the individual and these kinds of decision makings must be supported by the methods showing the hidden discontinuities.
Management and Economics wood
Hamed Ahmadi; Ajang Tajdini; Amir Lashgari
Abstract
In this research, the impact of various products design was investigated in end-customer’s satisfaction. . For this purpose, the variables are: products ‘external characteristic variables, quality, price, distributing system, after sales services, perceived value and sex moderator variable. ...
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In this research, the impact of various products design was investigated in end-customer’s satisfaction. . For this purpose, the variables are: products ‘external characteristic variables, quality, price, distributing system, after sales services, perceived value and sex moderator variable. The statistical population of this research includes all the consumers of household wooden steel furniture in Tehran city. In order to evaluate and examine the conceptual model, structural equation method and AMOS software are used. The results showed that the model has been fitted in the first-grade and second-grade measurement models and also on structural model. In measurement model, the measurement indices have created some meaningful factor loadings. This issue shows that model has been determined from theoretical literature and the criteria of this measurement have been recognized correctly. This caused a high validity of the measurements ‘tools. The variables of external characteristics, quality, price, after -sales services and perceived value are all effective at 99 percent of the confidence level on the consumer of household wooden furniture. But, the effect of distributing system variable on customer satisfaction did not accept. Also according to the obtained results, it is clear that sex variable can just adapt the relationship between external characteristics and customer satisfaction in the level of 90 percent significance.
Management and Economics wood
Elham Gudarzi; Ajang Tajdini
Abstract
One of major causes of the failure production companies in the international markets is referred to the lack of their competitiveness in comparison with competitors. Therefore, the purpose of this study were determining and ranking of the effective indices on competitiveness of Iran’s furniture ...
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One of major causes of the failure production companies in the international markets is referred to the lack of their competitiveness in comparison with competitors. Therefore, the purpose of this study were determining and ranking of the effective indices on competitiveness of Iran’s furniture industry by analytical hierarchy process. ّFor this purpose, reviewing and investigating of researches carried out by others and interviewing with a numbers of especialista,the effective indices on competitiveness of Iran’s wooden furniture industry divided into the 4 main groups and 19 sub-indices.Importance degree of the indices and sub-indices were determined after collecting experts opinion by AHP method.The results showed that mainindicators economic, technical, materials, human being indices have highest weight values respectively. Successful designing sub-indices was dramatically higher than the other sub-indices and after that the sub-indices of raw materials, sustainable managem ent, professional human resources, standard development, sustainable supply, branding have allocated highest priority in AHP method respectively.
Management and Economics wood
Asghar Sobhi Nosrat; Ajang Tajdini; Shademan Pourmousa
Abstract
In this research by using the professors and specialists ideas and studying the related papers, the effective factors of relations between companies and industrial suppliers were identified and satisfaction concept in the supply chain was measured with investigating trust‚ relation‚ cooperation ...
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In this research by using the professors and specialists ideas and studying the related papers, the effective factors of relations between companies and industrial suppliers were identified and satisfaction concept in the supply chain was measured with investigating trust‚ relation‚ cooperation ‚ accordance with expectations ‚ quality ‚ cost and material provision time and production ‚ order time ‚ and delivery time until transferring to the final costumer variables. Statistics population of the research was considered ‚ all of managers of the companies and raw material suppliers which are active in the home wooden industry of Tehran province in the field of furniture ‚ and considered data were collected by using questionnaire .The research method is based on goal ‚ is applied form and according to implementation way and data collection is correlation description. We have used frequency distribution tables for findings description. In the inference step ‚ we have used spearman correlation tests and path analysis with the help of SPSS16 software. The seven hypothesis are used which one of them was omitted in the analysis step and from six hypotheses which were used, one of them was not accepted. The research results showed that there are significant and heavy relationships between trust ‚ relation and cooperation and cost variables and industrial buyers’ satisfaction. In the case of the time delivery speed, although there is relationship but it isn’t high correlation
Physics and Mechanical Wood
Ehsan Haji rafiriha; Mehran Roohnia; Ahmad Jahan latibari; Ajang Tajidini
Abstract
The effect of lamination and adhesive coverage rate in layered products made from Poplar wood was studied The effect of lamination and adhesive coverage rate in layered products made from Poplar wood was studied by non-destructive free vibration test. 120 samples with nominal dimensions of 2.5×2.5×45 ...
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The effect of lamination and adhesive coverage rate in layered products made from Poplar wood was studied The effect of lamination and adhesive coverage rate in layered products made from Poplar wood was studied by non-destructive free vibration test. 120 samples with nominal dimensions of 2.5×2.5×45 cm without any obvious deficiencies were selected and free flexural vibration in free-free bars were performed for testing them. Samples were longitudinal cut in three thinner tangential layers and jointed together again using Poly Vinyl Acetate glue. The specimens were divided into four groups according to adhesive coverage rates, which one group was fully glued and 3 groups were carrying some glue deficiencies in different rates. Manipulated samples were tried again in above mentioned test. Results indicated that shear moduli compare to modulus of elasticity is a more sensitive parameter to evaluate glue efficiency in laminated beams but concerns remained due to blind points in flexural vibration nondestructive method.
Mostafa Maleki Gholandoz; Ajang Tajedini; Shadman Pourmosa; Ebrahim Agharafiei
Abstract
To compete in value creating and attempt to achieve sustainable competitive advantage and a strategic advantage over competitors have resulted in an increased attention to the importance of customer and his/her satisfaction. This is particularly important in extensive furniture and wood industry that ...
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To compete in value creating and attempt to achieve sustainable competitive advantage and a strategic advantage over competitors have resulted in an increased attention to the importance of customer and his/her satisfaction. This is particularly important in extensive furniture and wood industry that deals with a wide range of customers with different tastes and attitudes. As a result, this study using library research and customer survey, attempts to identify factors influencing customer satisfaction and determine their relative impact using TOPSIS as one of the most important multi-criteria decision-making methods. The results indicate that the developed conceptual model consists of six major indexes—beauty and appearance, quality, competitive pricing, distribution and delivery systems, after-sale and support services and 35 sub-indexes. Ranking the sub-indexes reveal that the sub-indexes: fitting to indoor space; fabric, foam, and wood parts quality; product durability according to purchase price; on-time delivery; sales person’s honesty and responsiveness to provide technical knowledge; and the superiority of the household wood furniture in comparison to other similar products are the most important factors that affect customer satisfaction. On the other hand, Sub-indexes of size and volume, maintainability, purchase facilities provided by the company, method of installation, availability of product specification manual, and the environmental factors are found to have the least impact on customer satisfaction.
Azhang Tajdini; Amir hossein Taghadosi; Shadman Pourmousa; Ahmad Jahan-Latibari; Vahid reza Safdari
Abstract
Abstract: In the recent years due to the innovations taking place in the production, packaging and shipping of furniture, world trade of these products has grown substantially. This issue along with some outstanding problems in manufacturing and marketing various kinds of wooden has caused that furniture ...
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Abstract: In the recent years due to the innovations taking place in the production, packaging and shipping of furniture, world trade of these products has grown substantially. This issue along with some outstanding problems in manufacturing and marketing various kinds of wooden has caused that furniture imports to Iran has enjoyed significant growth .In order to achieve the efficient and economic import, identify all factors that the perspective of experts led to prefer these products in compared with similar domestic production will be essential, therefore in this research in order to investigate the reasons for the expansion of the import quantities, the standardized questionnaires (certified by professionals and academic professors in four groups: Economics, Environment, Technical and Technological, and Consumption) are provided by use of documentary and survey research methods to investigate the effective indices on importing wooden furniture to Iran in order to describe the reasons of its widespread throughout Iranian experts. These main indexes indices of imports are rated by three methods: Likert spectrum, Duncan Test, and relative importance ratio of each index. We applied Likert spectrum on the whole statistical population and it shows that Environment index holds the first rank and Consumption, Technical and Technological, and Economics indexes are followed respectively. Duncan test shows Economics index has the first rank, Environment index holds the second place. Technical and Technological index are in the same place as Consumption index and according to the test there is no meaningful differences between them. On the other hand, using the relative importance ratio method we classified related occupations into 4 groups: producers, vendors/ distributers, importers, and consumers. We employed third method to see how these four groups evaluate the importance of each index. Results are as follows: PRODUCERS believe that Environment index is in the first place and then Economics, Technical and Technological, and finally Consumption index. VENDORS/DISTRIBUTORS believe Consumption, Technical and Technological, Economics, and Environment index is the sequence. IMPORTERS believe that Consumption index is in the main priority and then Technical and Technological, Economics, and Environment hold next places.
Vahid reza ُSafdari; Nima Eskini; Ajang Tajdini; Vlima Bayramzadeh
Abstract
Wood anatomy in addition to genetic is affected by environmental factors. One of the environmental factors is soil erosion which affects anatomical properties of roots considerably. Juniperus excelsa is one of Iranin indigenous softwood and has longevity and anatomical properties of its root in two conditions: ...
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Wood anatomy in addition to genetic is affected by environmental factors. One of the environmental factors is soil erosion which affects anatomical properties of roots considerably. Juniperus excelsa is one of Iranin indigenous softwood and has longevity and anatomical properties of its root in two conditions: inside of soil and exposed one can reveal effects of soil erosion on wood anatomical properties of root. So many roots and barks of trees in inside of soils and exposed have been sampled and many micro-sections prepared by microtome and anatomical properties were investigated. Results showed that wood roots under soil conform of one row of late-wood and by exposing the lumen area of tracheids in early-wood and late-wood were decreased and the cells appear thicker and late-wood portion increased. The axial parenchyma inclusion of dark resins in exposed roots observed frequently. Meanwhile by exposing of roots the thickness of bark decreased and the thickness of phloem and periderm in exposed root is not as wide as normal roots.
Management and Economics wood
Amir Tavakkoli; Ajang Tajdini; Mehran Roohnia; Ahmad Jahan latibari
Abstract
Corrugated board is considered as a valuable community for packaging at both international and domestic markets. Therefore for the development of corrugated board industry in Iran and to understand the variation in demand for this product, it's necessary to identify the consumption ...
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Corrugated board is considered as a valuable community for packaging at both international and domestic markets. Therefore for the development of corrugated board industry in Iran and to understand the variation in demand for this product, it's necessary to identify the consumption and production patterns as well as the most important and effective variables influencing it's status. Then the demand & supply for corrugated board can be forecasted. In this study, the dynamic econometric model has been used to demonstrate simultaneous relationship between supply and demand. Coefficients of the model were estimated using 3sls method with the time series data from 1981 to 2007. The results indicated that in the demand function, intercept, price, GNP in previous period, population, CPI, industrial added value(Iav), production index of large-scale industries(PILSI) and the war dummy variables are significant at 0.05 level. In the supply function, intercept, production quantity in previous period, inflation rate, corrugated board price-raw material price ratio in previous period, import quantity in previous period, cost price all in previous period and subsidy dummy variables are significant at 0.05 level. Results indicate that the mentioned variables influence consumption and production, simultaneously. The results of projection also demonstrate that corrugated board production & consumption will increase into 2012.
Pulp and paper
Reza Hosseinpoor; Ahmad Jahan - Latibari; Ajang Tajdini; Sayed javad Sapideh dam; Ramin Farnod
Abstract
The impact of chemical treatment variables including treatment time and temperature, chemical charge as well as pulp freeness on fiber quality of Colza stem chemi-mechanical pulp was studied using Fiber Quality Analyzer (FQA). Three treatment times (15, 30 and 45 minutes), two treatment temperatures ...
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The impact of chemical treatment variables including treatment time and temperature, chemical charge as well as pulp freeness on fiber quality of Colza stem chemi-mechanical pulp was studied using Fiber Quality Analyzer (FQA). Three treatment times (15, 30 and 45 minutes), two treatment temperatures (125 and 145 °C), two chemical charges (4% NaOH + 8% Na2SO3 and 8% NaOH +12% Na2SO3) as well as pulp refining were evaluated. The results revealed that at higher values of treatment variables, fiber average length was reduced and varied between 0.49 and 0.65 mm. However, the influence of pulp refining on fiber average length was not very pronounced. Pulps contained between 55 -63 % fines, which is on the high range and refining increased the fine content by 5%. Fiber coarseness varied between 10 and 41 mg/100m which was raised to 14 and 53 mg/100m upon refining. Even though refining did not alter fiber curl, but fiber kinks were increased.
Management and Economics wood
Ajang Tajdini; Mehran Roohnia
Abstract
Total and per capita consumption of fluting paper was calculated using data and information from production, import and export for last decades. Then based on the fact that consumption of paper and paper products is a function of both per capita consumption and population of any country, regression analysis ...
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Total and per capita consumption of fluting paper was calculated using data and information from production, import and export for last decades. Then based on the fact that consumption of paper and paper products is a function of both per capita consumption and population of any country, regression analysis was used to predict per capita consumption for the period of 1994-2003, total consumption for the period of 2006-2011 as well as the year 2021. Finally based on the calculated consumption of different papers and considering the present and future capacities for paper production, the shortage of paper was derived. Results showed that the fluting paper consumption for the year 2021, will reach 290000 tons which causes 200,000 tons of shortage per year. This shortage will require that almost 70% consumption need to be fulfilled by import.
