Pub Date : 2021-06-28DOI: 10.5604/01.3001.0015.2380
M. Grotowska, P. Beer
Management of wood production residues as wholesome products - case study. The aim of the analysis is to check the possibilities of better use of post-production wood residues, which as a result of these activities gain the same value as full-value production materials.This includes producing high-quality products from them having in mind innovation, design and ecology. The circular economy and sustainable development strategies are new concepts and objectives of the EU material strategy. There is no turning back from these actions. They will be forced by the requirements and recommendations of the EU. Therefore, it is better to get used to them and to the activities behind them. An example should be taken from the new course at the University of Cambridge - Judge Business School.
木材生产残留物作为卫生产品的管理-案例研究。分析的目的是检查更好地利用生产后木材残留物的可能性，这些活动的结果是获得与全价值生产材料相同的价值。这包括从他们的思想创新，设计和生态生产高质量的产品。循环经济和可持续发展战略是欧盟材料战略的新理念和新目标。这些行动没有退路。他们将被迫接受欧盟的要求和建议。因此，最好习惯它们以及它们背后的活动。剑桥大学(University of Cambridge)贾奇商学院(Judge Business School)的新课程就是一个例子。
{"title":"Management of wood production residues as wholesome products \u0000- case study","authors":"M. Grotowska, P. Beer","doi":"10.5604/01.3001.0015.2380","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2380","url":null,"abstract":"Management of wood production residues as wholesome products - case study. The aim of the analysis is to check the possibilities of better use of post-production wood residues, which as a result of these activities gain the same value as full-value production materials.This includes producing high-quality products from them having in mind innovation, design and ecology. The circular economy and sustainable development strategies are new concepts and objectives of the EU material strategy. There is no turning back from these actions. They will be forced by the requirements and recommendations of the EU. Therefore, it is better to get used to them and to the activities behind them. An example should be taken from the new course at the University of Cambridge - Judge Business School.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88339607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-28DOI: 10.5604/01.3001.0015.2372
Marcin Jałoweicki, I. Betlej
Effect of the essential oils addition on the rate of bacterial cellulose surface overgrowth by mold fungi. The aim of this study was to determine the effectiveness of protecting films made of bacterial cellulose with essential oils against overgrowth by mold fungi. The cellulose film produced by microorganisms forming a pellicle called SCOBY was modified by introducing into the cellulose pulp essential oils: cinnamon and manuka. Samples of the protected film were treated with mold fungi: Chaetomium globosum, Aspergillus niger and Trichoderma viride. On the basis of the tests conducted, the rate of film overgrowth by mold fungi and the effectiveness criteria of cellulose film protection with essential oils were determined. The addition of cinnamon oil protected the film against the growth of Aspergillus niger and Chaetomium globosum fungi. Manuka oil slowed down the growth of Chaetomium globosum microorganisms on the surface of the bacterial cellulose film sample, but did not protect the samples from overgrowth. The essential oils tested were ineffective against the fungus Trichoderma viride.
{"title":"Effect of the essential oils addition on the rate of bacterial cellulose surface overgrowth by mold fungi","authors":"Marcin Jałoweicki, I. Betlej","doi":"10.5604/01.3001.0015.2372","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2372","url":null,"abstract":"Effect of the essential oils addition on the rate of bacterial cellulose surface overgrowth by mold fungi. The aim of this study was to determine the effectiveness of protecting films made of bacterial cellulose with essential oils against overgrowth by mold fungi. The cellulose film produced by microorganisms forming a pellicle called SCOBY was modified by introducing into the cellulose pulp essential oils: cinnamon and manuka. Samples of the protected film were treated with mold fungi: Chaetomium globosum, Aspergillus niger and Trichoderma viride. On the basis of the tests conducted, the rate of film overgrowth by mold fungi and the effectiveness criteria of cellulose film protection with essential oils were determined. The addition of cinnamon oil protected the film against the growth of Aspergillus niger and Chaetomium globosum fungi. Manuka oil slowed down the growth of Chaetomium globosum microorganisms on the surface of the bacterial cellulose film sample, but did not protect the samples from overgrowth. The essential oils tested were ineffective against the fungus Trichoderma viride.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83320813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-28DOI: 10.5604/01.3001.0015.2391
G. Slabejova, M. Smidriakova
Colour stability of surface finishes on thermally modified beech wood. The paper deals with the influence of the type of transparent surface finish on the change of colour of the surfaces of native beech wood and thermally modified wood. At the same time, the colour stability of three surface finishes on the surfaces of native and thermally modified beech wood was monitored. Beech wood was thermally modified at temperature of 125 °C for 6 hours. The thermal treatment was performed in a pressure autoclave APDZ 240, by the company Sundermann s.r.o in Banská Štiavnica. Three various types of surface finishes (synthetic, wax-oil, water-based) were applied onto the wood surfaces. The colour of the surfaces of native wood and thermally modified wood was measured in the system CIELab before and after surface finishing; the coordinates L*, a*, b*, C*ab and h*ab were measured. From the coordinates measured before and after surface finishing, the differences were calculated and then the colour difference ∆E* was calculated. Subsequently, the test specimens with the surface finishes were exposed to natural sunlight, behind glass in the interior for 60 days. The surface colour was measured at specified time of the exposure (10, 20, 30, 60 days). The results showed that the colour of the wood surfaces changed after application of the individual surface finishes; and the colour difference reached a change visible with a medium quality filter up to a high colour difference. The wax-oil surface finish caused a high colour difference on native wood and on thermally modified wood as well. On native beech wood, the lowest colour difference after exposure to sunlight was noticeable on the synthetic surface finish. On the surface of wood thermally modified, after exposure to sunlight, the lowest colour difference was noticeable on the surface with no surface finish.
{"title":"Colour stability of surface finishes on thermally modified beech wood","authors":"G. Slabejova, M. Smidriakova","doi":"10.5604/01.3001.0015.2391","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2391","url":null,"abstract":"Colour stability of surface finishes on thermally modified beech wood. The paper deals with the influence of the type of transparent surface finish on the change of colour of the surfaces of native beech wood and thermally modified wood. At the same time, the colour stability of three surface finishes on the surfaces of native and thermally modified beech wood was monitored. Beech wood was thermally modified at temperature of 125 °C for 6 hours. The thermal treatment was performed in a pressure autoclave APDZ 240, by the company Sundermann s.r.o in Banská Štiavnica. Three various types of surface finishes (synthetic, wax-oil, water-based) were applied onto the wood surfaces. The colour of the surfaces of native wood and thermally modified wood was measured in the system CIELab before and after surface finishing; the coordinates L*, a*, b*, C*ab and h*ab were measured. From the coordinates measured before and after surface finishing, the differences were calculated and then the colour difference ∆E* was calculated. Subsequently, the test specimens with the surface finishes were exposed to natural sunlight, behind glass in the interior for 60 days. The surface colour was measured at specified time of the exposure (10, 20, 30, 60 days). The results showed that the colour of the wood surfaces changed after application of the individual surface finishes; and the colour difference reached a change visible with a medium quality filter up to a high colour difference. The wax-oil surface finish caused a high colour difference on native wood and on thermally modified wood as well. On native beech wood, the lowest colour difference after exposure to sunlight was noticeable on the synthetic surface finish. On the surface of wood thermally modified, after exposure to sunlight, the lowest colour difference was noticeable on the surface with no surface finish.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83235853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.5604/01.3001.0015.2354
T. Szablewski, Lidia Szwajkowska-Michałek, Marta Pędzik, T. Rogoziński, Kinga Stupor-Szablewska
Contamination with microscopic fungi measured by the concentration of ergosterol in dusts of various types of wood with different granulation. Dusts are a mixture of compounds generated both in the anthropogenic and natural environment and they are a by-product of combustion and abrasion or crushing of solid materials. Dust generated in wood industry plants as a result of mechanical wood processing is particularly dangerous. Wood dusts - both dispersed in the air inside a production plant and deposited - also contain the work environment's so-called biological agents. This term refers to microorganisms and the structures and substances produced by these organisms, which have an adverse effect on the human organism and may cause numerous diseases. The aim of this study was to determine the level of contamination with microscopic fungi of dusts from various types of wood depending on the granulation. The method of analysis of the chemical ergosterol marker was used here, the concentration of which is correlated with the number of mycoscopic fungi. On the basis of the study, it was found that dusts with finer granulation from deciduous wood are characterized by a higher concentration of ERG, i.e. a higher level of contamination with microscopic fungi. It is important information from the point of view of health and safety at work.
{"title":"Contamination with microscopic fungi measured by the concentration \u0000of ergosterol in dusts of various types of wood with different granulation","authors":"T. Szablewski, Lidia Szwajkowska-Michałek, Marta Pędzik, T. Rogoziński, Kinga Stupor-Szablewska","doi":"10.5604/01.3001.0015.2354","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2354","url":null,"abstract":"Contamination with microscopic fungi measured by the concentration of ergosterol in dusts of various types of wood with different granulation. Dusts are a mixture of compounds generated both in the anthropogenic and natural environment and they are a by-product of combustion and abrasion or crushing of solid materials. Dust generated in wood industry plants as a result of mechanical wood processing is particularly dangerous. Wood dusts - both dispersed in the air inside a production plant and deposited - also contain the work environment's so-called biological agents. This term refers to microorganisms and the structures and substances produced by these organisms, which have an adverse effect on the human organism and may cause numerous diseases. The aim of this study was to determine the level of contamination with microscopic fungi of dusts from various types of wood depending on the granulation. The method of analysis of the chemical ergosterol marker was used here, the concentration of which is correlated with the number of mycoscopic fungi. On the basis of the study, it was found that dusts with finer granulation from deciduous wood are characterized by a higher concentration of ERG, i.e. a higher level of contamination with microscopic fungi. It is important information from the point of view of health and safety at work.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77525805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.5604/01.3001.0015.2334
Jakub Kawalerczyk, Marcin Kuliński, D. Dziurka, R. Mirski
The possibility to use a side-timber in glulam beams manufacturing for structural applications. The aim of presented study was to determine the mechanical properties of three-layered glued structural beams manufactured with the use of side-timber pieces as an outer layers and the fragmented main yield as an inner layer. Four types of beams were pressed and tested in terms of four-point bending strength and modulus of elasticity. Variants differed from each other in the direction of the fibers in the inner layer and in the presence of adhesive layer between the fragmented wood. Studies have shown that the bending strength of the beams depended on the calculation method. Moreover, no significant effect of the inner layer arranging method on the bending strength of the beams was found. The values of modulus of elasticity (MOE) were low. The presented study is a starting point for further investigations concerning the possible way of the rational application of fragmented timber pieces and the side-timber for structural applications.
{"title":"The possibility to use a side-timber in glulam beams manufacturing for structural applications","authors":"Jakub Kawalerczyk, Marcin Kuliński, D. Dziurka, R. Mirski","doi":"10.5604/01.3001.0015.2334","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2334","url":null,"abstract":"The possibility to use a side-timber in glulam beams manufacturing for structural applications. The aim of presented study was to determine the mechanical properties of three-layered glued structural beams manufactured with the use of side-timber pieces as an outer layers and the fragmented main yield as an inner layer. Four types of beams were pressed and tested in terms of four-point bending strength and modulus of elasticity. Variants differed from each other in the direction of the fibers in the inner layer and in the presence of adhesive layer between the fragmented wood. Studies have shown that the bending strength of the beams depended on the calculation method. Moreover, no significant effect of the inner layer arranging method on the bending strength of the beams was found. The values of modulus of elasticity (MOE) were low. The presented study is a starting point for further investigations concerning the possible way of the rational application of fragmented timber pieces and the side-timber for structural applications.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89769981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.5604/01.3001.0015.2330
Barbara Białowąs, K. Szymanowski
Effect of thermomechanical densification of pine wood (Pinus sylvestris L.) on cutting forces and roughness during milling. The paper presents the results of research concerning the assessment of machinability of pine wood thermomechanically compacted. The assessment was made on the basis of the cutting forces and surface roughness after the milling process. Selected properties of native and modified wood were examined. Based on the research, it was found that compacted wood is characterized by higher cutting forces during milling. The surface quality after milling was examined and the roughness index Ra values were determined. The research shows that the modified wood is characterized by a lower Ra value both along and across the grain. Statistical analysis showed that the modification had a statistically significant effect on the values of cutting forces and the physical and mechanical properties of the tested wood.
{"title":"Effect of thermomechanical densification of pine wood (Pinus sylvestris L.) on cutting forces and roughness during milling","authors":"Barbara Białowąs, K. Szymanowski","doi":"10.5604/01.3001.0015.2330","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2330","url":null,"abstract":"Effect of thermomechanical densification of pine wood (Pinus sylvestris L.) on cutting forces and roughness during milling. The paper presents the results of research concerning the assessment of machinability of pine wood thermomechanically compacted. The assessment was made on the basis of the cutting forces and surface roughness after the milling process. Selected properties of native and modified wood were examined. Based on the research, it was found that compacted wood is characterized by higher cutting forces during milling. The surface quality after milling was examined and the roughness index Ra values were determined. The research shows that the modified wood is characterized by a lower Ra value both along and across the grain. Statistical analysis showed that the modification had a statistically significant effect on the values of cutting forces and the physical and mechanical properties of the tested wood.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"123 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86055772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.5604/01.3001.0015.2327
E. Dobrowolska, I. Błaszczak, A. Mielnik, E. Lisiecka
In furniture design, understood as a kind of evolutionary process, there is room for designer’s creativity, but not in the sense traditionally accepted in the psychology of creation. The creativity of the designer shapes the products of the evolutionary algorithm but does not replace them. This can be illustrated by the genesis of any design, such as furniture that stimulates the development of the child. The Montessori pedagogy leaves a lot of room for new designs of Montessorian teaching aids. The Montessori didactic material forms a logically structured whole. It enables the child to move out of experience and sensual cognition; it serves not only the development of the intellect but also the education of the whole personality. The Montessorian materials take into account the child’s stage of development, corresponding to a given sensitive phase and the very logic of things, so that the child, while learning, can embrace larger cognitive sequences, arouse a sense of aesthetics, motivation, curiosity and interest, thus triggering various forms of activity.
{"title":"A systemic model of furniture meant for stimulating development of a child \u0000based on educational aids from M. Montessori","authors":"E. Dobrowolska, I. Błaszczak, A. Mielnik, E. Lisiecka","doi":"10.5604/01.3001.0015.2327","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2327","url":null,"abstract":"In furniture design, understood as a kind of evolutionary process, there is room for designer’s \u0000creativity, but not in the sense traditionally accepted in the psychology of creation. The creativity of the designer \u0000shapes the products of the evolutionary algorithm but does not replace them. This can be illustrated by the \u0000genesis of any design, such as furniture that stimulates the development of the child. The Montessori pedagogy \u0000leaves a lot of room for new designs of Montessorian teaching aids. The Montessori didactic material forms a \u0000logically structured whole. It enables the child to move out of experience and sensual cognition; it serves not \u0000only the development of the intellect but also the education of the whole personality. The Montessorian materials \u0000take into account the child’s stage of development, corresponding to a given sensitive phase and the very logic of \u0000things, so that the child, while learning, can embrace larger cognitive sequences, arouse a sense of aesthetics, \u0000motivation, curiosity and interest, thus triggering various forms of activity.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86479822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.5604/01.3001.0015.2356
J. Wachowicz, Jeremi Gos, J. Wilkowski
Functional properties of WCCo composites obtained by the SPS – Spark Plasma Sintering method. The rapid development of the furniture market results in the need to produce tools with increasingly better properties which make it possible to increase the efficiency of the production. One of the prospective paths of development for blades intended for cutting wood-based materials are carbides made using the Spark Plasma Sintering method. It makes it possible to produce sinters with submicron or even nanometric WC grain size in a very short time and without the need for using inhibitors. As a result of the specific heating conditions, this method makes it possible to obtain a material having high parameters in comparison with the material produced using conventional methods. This study aimed to determine the degree of wear of SPS tools compared to commercially available blades (of similar chemical composition). The results of research testing the basic properties (hardness, density, microstructure) of WCCo composites, obtained using the innovative SPS method, are included in the study. The quality of the produced tools and the intensity of wear of the blades made using the SPS method were evaluated. The results were compared to commercially available blades. The wear of individual blades was evaluated based on the machining of three-layer particleboard.
{"title":"Structure and cutting properties of WC-Co composites obtained by the SPS - Spark Plasma Sintering method","authors":"J. Wachowicz, Jeremi Gos, J. Wilkowski","doi":"10.5604/01.3001.0015.2356","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2356","url":null,"abstract":"Functional properties of WCCo composites obtained by the SPS – Spark Plasma Sintering method. The rapid development of the furniture market results in the need to produce tools with increasingly better properties which make it possible to increase the efficiency of the production. One of the prospective paths of development for blades intended for cutting wood-based materials are carbides made using the Spark Plasma Sintering method. It makes it possible to produce sinters with submicron or even nanometric WC grain size in a very short time and without the need for using inhibitors. As a result of the specific heating conditions, this method makes it possible to obtain a material having high parameters in comparison with the material produced using conventional methods. \u0000This study aimed to determine the degree of wear of SPS tools compared to commercially available blades (of similar chemical composition). The results of research testing the basic properties (hardness, density, microstructure) of WCCo composites, obtained using the innovative SPS method, are included in the study. The quality of the produced tools and the intensity of wear of the blades made using the SPS method were evaluated. The results were compared to commercially available blades. The wear of individual blades was evaluated based on the machining of three-layer particleboard.\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79530217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.5604/01.3001.0015.2355
S. Trofimov, T. Rogoziński
Sliding angle of repose and pickup velocity of chosen types of chipped wood. The report presents the results of the study of conditions sufficient for the motion or immobility of a layer of chipped wood on an inclined plane of sliding and the value of the air velocity in a horizontal duct for lifting or settling a layer of particles of bulk material. When performing the work, special laboratory units were used with adjustment of the angle of inclination of the sliding plane and air velocity in the pipeline. The results of experimental studies can be used to solve issues of transportation, bunkering and storage of some common species and types of chipped wood (sawdust, shavings, sanding dust).
{"title":"Sliding angle of repose and pickup velocity of chosen types of chipped wood","authors":"S. Trofimov, T. Rogoziński","doi":"10.5604/01.3001.0015.2355","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2355","url":null,"abstract":"Sliding angle of repose and pickup velocity of chosen types of chipped wood. The report presents the results of the study of conditions sufficient for the motion or immobility of a layer of chipped wood on an inclined plane of sliding and the value of the air velocity in a horizontal duct for lifting or settling a layer of particles of bulk material. When performing the work, special laboratory units were used with adjustment of the angle of inclination of the sliding plane and air velocity in the pipeline. The results of experimental studies can be used to solve issues of transportation, bunkering and storage of some common species and types of chipped wood (sawdust, shavings, sanding dust).\u0000\u0000","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87333970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-31DOI: 10.5604/01.3001.0015.2333
A. Jasińska, M. Sydor
Dissemination of algorithms for decision-making aiding in the design of furniture and other products made of lignocellulosic materials in the scientific literature. The issue of the proper selection of dimensions of the designed products can be supported with the use of mathematical algorithms built into CAD systems. There are many such algorithms, they have their specificity and areas of application. The article lists a dozen or so of the most popular algorithms of this type, and then checks their prevalence in the scientific literature on furniture design. The result is a point the method (group of methods) that best takes into account the specific features of lignocellulosic materials. The main conclusion is that the most popular algorithms are: the ε-constraint method, genetic algorithms and artificial immune systems. The most popular is the ε-constraint method.
{"title":"Dissemination of algorithms for decision-making aiding in the design of furniture and other products made of lignocellulosic materials in the scientific literature","authors":"A. Jasińska, M. Sydor","doi":"10.5604/01.3001.0015.2333","DOIUrl":"https://doi.org/10.5604/01.3001.0015.2333","url":null,"abstract":"Dissemination of algorithms for decision-making aiding in the design of furniture and other products made of lignocellulosic materials in the scientific literature. The issue of the proper selection of dimensions of the designed products can be supported with the use of mathematical algorithms built into CAD systems. There are many such algorithms, they have their specificity and areas of application. The article lists a dozen or so of the most popular algorithms of this type, and then checks their prevalence in the scientific literature on furniture design. The result is a point the method (group of methods) that best takes into account the specific features of lignocellulosic materials. The main conclusion is that the most popular algorithms are: the ε-constraint method, genetic algorithms and artificial immune systems. The most popular is the ε-constraint method.","PeriodicalId":8020,"journal":{"name":"Annals of WULS, Forestry and Wood Technology","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79742044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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