Drewno最新文献 - Book学术

Carbon Monoxide and Nitric Oxide Concentrations in Flue Gas During Combustion of Agricultural Biomass in the Residental Boiler 农业生物质在住宅锅炉燃烧过程中烟气中一氧化碳和一氧化氮的浓度

IF 0.8 4区农林科学

Drewno Pub Date : 2021-01-01 DOI: 10.12841/WOOD.1644-3985.356.01

Katarzyna Pałaszyńska, M. Juszczak, Ryszard Ostrowski

引用次数: 2

Particleboards with partially liquefied bark of different particle sizes 不同粒径树皮部分液化的刨花板

IF 0.8 4区农林科学

Drewno Pub Date : 2021-01-01 DOI: 10.12841/WOOD.1644-3985.363.10

W. Jiang, S. Adamopoulos, M. Petrić, M. Šernek, S. Medved

{"title":"Particleboards with partially liquefied bark of different particle sizes","authors":"W. Jiang, S. Adamopoulos, M. Petrić, M. Šernek, S. Medved","doi":"10.12841/WOOD.1644-3985.363.10","DOIUrl":"https://doi.org/10.12841/WOOD.1644-3985.363.10","url":null,"abstract":"This paper presents a novel method of partially liquefying bark sawmilling waste for use in making particleboards. Maritime pine (Pinus pinaster Ait.) bark of different particle sizes (fine, medium, coarse, and mixed) was partially liquefied in the presence of ethylene glycol as a solvent and sulphuric acid as a catalyst at 180°C for 30 minutes. Single-layer particleboards were prepared by mixing partially liquefied bark (PLB) and wood chips at a ratio of 0.25 with no adhesives (group A) and at ratios of 0.25 or 0.1 with melamine-urea-formaldehyde (MUF) adhesives for additional bonding (groups B and C respectively). Mechanical and physical properties of the particleboards were tested according to European standards. The results showed that the boards in group A had lower densities, inferior mechanical properties and higher moisture content than those in groups B and C. Bark particle size had a significant effect on the mechanical properties of particleboards within each group. Additional MUF bonding and avoidance of coarse bark particles had a positive effect on mechanical properties. The thickness swelling (TS) and water absorption (WA) values of MUF-bonded boards were lower than those of boards without MUF, and greater addition of PLB produced particleboards with better water resistance. Bark particle size was not as critical for TS and WA as for mechanical properties. The overall results suggested using a bark particle size of < 2 mm for further studies.","PeriodicalId":50566,"journal":{"name":"Drewno","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66330971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The methodology of acquisition and statistical analysis of data from the process of drying thin wooden elements 薄木件干燥过程中数据的采集和统计分析方法

IF 0.8 4区农林科学

Drewno Pub Date : 2020-01-01 DOI: 10.12841/WOOD.1644-3985.313.03

A. Kujawińska, M. Rogalewicz, M. Diering, K. Żywicki, P. Hoffmann

引用次数: 2

Economic analysis of the collection and transportation of pruned branches from orchards for energy production. 果园剪枝采运用于能源生产的经济分析。

IF 0.8 4区农林科学

Drewno Pub Date : 2020-01-01 DOI: 10.12841/WOOD.1644-3985.284.01

A. Dyjakon, J. Boer, G. Gebresenbet, T. Bosona, F. Adamczyk

引用次数: 5

Carbon monoxide and nitric oxide concentrations in the flue gas during the combustion of agricultural biomass briquettes in a 25 kW log gasification boiler 25kw原木气化锅炉中农业生物质型煤燃烧过程中烟气中的一氧化碳和一氧化氮浓度

IF 0.8 4区农林科学

Drewno Pub Date : 2019-01-01 DOI: 10.12841/WOOD.1644-3985.315.04

Katarzyna Pałaszyńska, M. Juszczak, Tomasz Grobelny, Filip Andrzejczak

引用次数: 0

The influence of surface modification of wood particles with carbon nanotubes on properties of particleboard glued with phenol-formaldehyde resin. 碳纳米管对木材表面改性对酚醛树脂胶合刨花板性能的影响。

IF 0.8 4区农林科学

Drewno Pub Date : 2019-01-01 DOI: 10.12841/WOOD.1644-3985.265.03

Damian Łukawski, W. Grześkowiak, Dorota Drukarska, B. Mazela, Agnieszka Lekawa-Raus, A. Dudkowiak

{"title":"The influence of surface modification of wood particles with carbon nanotubes on properties of particleboard glued with phenol-formaldehyde resin.","authors":"Damian Łukawski, W. Grześkowiak, Dorota Drukarska, B. Mazela, Agnieszka Lekawa-Raus, A. Dudkowiak","doi":"10.12841/WOOD.1644-3985.265.03","DOIUrl":"https://doi.org/10.12841/WOOD.1644-3985.265.03","url":null,"abstract":"Research was carried out on a newly manufactured particleboard (PB) containing carbon nanotubes (CNTs) to determine the effect of the CNTs on physical, mechanical and combustion properties of the board. The experiment consisted of two stages. In the first, wood particles were treated with an aqueous suspension of CNTs (0.2% w/w) and sodium dodecylbenzenesulfonate (0.2% w/w) as a dispersant. After drying to constant weight, a modified form of the ASTM E69 method was used to determine the effectiveness of fire protection provided by CNT-modified wood chips. The rate of wood decomposition decreased significantly, and the time to complete combustion increased from 18 to 22.5 min for the reference and CNT-modified wood particles respectively. In the second stage of the experiment a particleboard bonded with phenyl-formaldehyde resin was produced, in which the particles were modified with CNTs using the method described in the first stage. Selected physical and mechanical properties of the final board were determined. Samples of the board were tested using a mass loss calorimeter in accordance with the ISO 13927 standard, and mechanical tests were performed by applicable standard methods. However, no significant improvement in the properties of the PB were observed.","PeriodicalId":50566,"journal":{"name":"Drewno","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66330746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

The influence of number and size of sample plots on modelling growing stock volume based on airborne laser scanning 基于机载激光扫描的样地数目和大小对生长量建模的影响

IF 0.8 4区农林科学

Drewno Pub Date : 2018-01-01 DOI: 10.12841/WOOD.1644-3985.D11.04

K. Stereńczak, Marek Lisańczuk, K. Parkitna, Krzysztof Mitelsztedt, P. Mroczek, S. Miścicki

{"title":"The influence of number and size of sample plots on modelling growing stock volume based on airborne laser scanning","authors":"K. Stereńczak, Marek Lisańczuk, K. Parkitna, Krzysztof Mitelsztedt, P. Mroczek, S. Miścicki","doi":"10.12841/WOOD.1644-3985.D11.04","DOIUrl":"https://doi.org/10.12841/WOOD.1644-3985.D11.04","url":null,"abstract":"Current forest growing stock inventory methods used in Poland are based on statistical methods using field measurements of trees on circular sample plots. Such measurements are carried out with traditional equipment, i.e. callipers and range finders. Nowadays, remote sensing based inventory techniques are becoming more popular and have already been applied in North America and some Scandinavian countries. Remote sensing based forest inventories require a certain amount of ground sample plots, which serve either as reference data used for model calibration and/or as a validation dataset for the assessment of the accuracy of modelled variables. Using a set of 900 ground sample plots and Airborne Laser Scanner (ALS) from the Milicz forest district, a statistical model for the estimation of plot growing stock volume was developed. Next, the developed model was once again fitted to different variants of sample plot size and number of sample plots. Each variant was selected from a full 900 sample plot set. The selection started from 800, 700, 600, ..., down to 25 plots, respectively, and was carried out in proportion to the dominant tree age range. To account for the area effect, each plot number variant was similarly tested with various sample plot areas, i.e. 500, 400, ..., 100 m2. Sampling in each variant was repeated in order to take into account the effect of a single selection. The results showed a strong relationship between obtained modelling errors and the size and number of used sample plots. It has been demonstrated that the number of sample plots has no influence on the accuracy of GSV estimation above about 300-400 sample plots (about 500 sample plots for bias), whereas sample plot size has a visible impact on estimation accuracy,","PeriodicalId":50566,"journal":{"name":"Drewno","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66331526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

An evaluation of the influence of heat treatment on the preservative retention in ash wood (Fraxinus excelsior L.) 热处理对白蜡木保鲜率影响的评价

IF 0.8 4区农林科学

Drewno Pub Date : 2018-01-01 DOI: 10.12841/WOOD.1644-3985.205.01

T. Zielenkiewicz, J. Gawron, I. Florczak

引用次数: 1

Mathematical modelling of wooden biomass torrefaction 木质生物质烘烤的数学模型

IF 0.8 4区农林科学

Drewno Pub Date : 2017-01-01 DOI: 10.12841/WOOD.1644-3985.199.06

Paweł Stępień, A. Białowiec

{"title":"Mathematical modelling of wooden biomass torrefaction","authors":"Paweł Stępień, A. Białowiec","doi":"10.12841/WOOD.1644-3985.199.06","DOIUrl":"https://doi.org/10.12841/WOOD.1644-3985.199.06","url":null,"abstract":"Torrefaction is used for initial biomass valorisation prior to energetic utilization. The produced biocarbon is characterized by high energy density, and high calorific value. Moreover, it contains less moisture, and has hydrophobic character. Due to that, this technology is being found perspective, but the relation between process parameters, and biomass, and biocarbon properties should be still optimized. The presented work shows the mathematical modelling of torrefaction of the wooden biomass particle. The dependence between technological parameters (process temperature, and retention time), and biomass properties (density, calorific value of the biomass), and calorific value of biocarbon has been examined. The parameters of IInd degree polynomial functions, allowing the estimation of the required retention time or required process temperature to achieve desired calorific value of biocarbon have been determined. The modelling showed, that the process temperature and retention time are the most significant factors influencing the torrefaction efficiency. Also, the calorific value of biocarbon may be an important parameter, but biomass properties are not significant, with recommendation to neglect the biomass density.","PeriodicalId":50566,"journal":{"name":"Drewno","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66330487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Healing rate of logging wounds on broadleaf trees in Hyrcanian forest with some technological implications. 海卡尼亚森林阔叶树伐木伤的愈合率及其技术意义。

IF 0.8 4区农林科学

Drewno Pub Date : 2017-01-01 DOI: 10.12841/WOOD.1644-3985.200.05

F. Tavankar, R. Picchio, Mehrdad Nikooy, A. Monaco, R. Venanzi, A. I. Bodaghi

{"title":"Healing rate of logging wounds on broadleaf trees in Hyrcanian forest with some technological implications.","authors":"F. Tavankar, R. Picchio, Mehrdad Nikooy, A. Monaco, R. Venanzi, A. I. Bodaghi","doi":"10.12841/WOOD.1644-3985.200.05","DOIUrl":"https://doi.org/10.12841/WOOD.1644-3985.200.05","url":null,"abstract":"The wound healing rate (WHR) was investigated in 234 wounded trees in Iranian forests and was found to range from 6.4 to 24.0 mm·yr -1 . Tree species, slope aspect, elevation, wound age, and wound type had significant effects on the WHR. The mean of the WHR in the Fraxinus excelsior (24 mm·yr -1 ), Alnus subcordata (18.9 mm·yr -1 ) and in the Fagus orientalis (17.9 mm·yr -1 ) were significantly higher than in the Acer insigne (15.7 mm·yr -1 ), Acer cappadocicum (14.6 mm·yr -1 ), Carpinus betulus (13.7 mm·yr -1 ), and Tilia begonifolia (6.4 mm·yr -1 ). In addition, the mean of the WHR on northern slopes (17.5 mm·yr -1 ) was significantly higher than on southern slopes. Moreover, the parameters that positively influenced tree growth showed a similar effect on the wound healing rate. The WHRs of 5-, 10- and 15-year-old wounds were 19.3, 16.9 and 10 mm·yr -1 , respectively. The WHR increased the higher the wound from ground level. The WHR for horizontal wounds (18.4 mm·yr -1 ) was significantly higher than for vertical wounds. The highest WHR was estimated in a stand with a canopy closure of 60-80%. The WHR decreased according to increasing wound width. Wounds affect future income, lowering the number of trees that potentially provide a higher quality of saw and veneer logs.","PeriodicalId":50566,"journal":{"name":"Drewno","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66330359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 23