WOOD RESEARCH 67(4) 2022最新文献

EFFECT OF PAPERBOARD SURFACE MODIFICATIONS ON ELECTRICAL CONDUCTIVITY OF PRINTED UHF RFID ANTENNAS 纸板表面改性对印刷超高频rfid天线导电性的影响

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.671685

J. Gigac, M. Fišerová, Radko Tiňo

{"title":"EFFECT OF PAPERBOARD SURFACE MODIFICATIONS ON ELECTRICAL CONDUCTIVITY OF PRINTED UHF RFID ANTENNAS","authors":"J. Gigac, M. Fišerová, Radko Tiňo","doi":"10.37763/wr.1336-4561/67.4.671685","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/67.4.671685","url":null,"abstract":"The effect of surface roughness and water contact angle of commercial paperboard before and after surface modification by calendering, coating and calendering and plasma treatment on the functionality of UHF RFID antennas printed with thermal transfer aluminum ribbon was evaluated. A hydrophilic surface was created by coating or plasma treatment, which improved the wettability of the paperboard surface, the spreading of the thermoplastic tie layer and theadhesion of the conductive aluminum layer. Anew paper product was created with permanent surface wettability by coating, without theneed for plasmatreatment before printing. Theplasma treatment provided time-limited wettability, needed only during printing, and made it possible to restore the original hydrophobic surface of thepaperboard. In addition to themeaning of these surface modifications, the importance and need to reduce the surface roughness was confirmed, as the higher surface roughness of the paperboard limited the effect of the plasma treatment in terms of its printability and the functionality of the printed aluminum antenna. The printability of the paperboard and the functionality of the printed antennas were evaluated using electrical conductivity. The electrical conductivities of the dipole and inductor loop of the UHF RFID antennas printed on modified paperboards varied depending on theantenna design.","PeriodicalId":329192,"journal":{"name":"WOOD RESEARCH 67(4) 2022","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133022895","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}

引用次数: 1

THE CHANGES IN THE SURFACE OF FLAT PRESSED WOOD-PLASTIC COMPOSITES EXPOSED TO ARTIFICIAL WEATHERING 平面压制木塑复合材料在人工风化作用下的表面变化

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.636647

Sefa Durmaz, Özlem Özgenç

{"title":"THE CHANGES IN THE SURFACE OF FLAT PRESSED WOOD-PLASTIC COMPOSITES EXPOSED TO ARTIFICIAL WEATHERING","authors":"Sefa Durmaz, Özlem Özgenç","doi":"10.37763/wr.1336-4561/67.4.636647","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/67.4.636647","url":null,"abstract":"In this study, the wood flour content's effect on the weathering performance of flat pressed WPC was investigated. The high density polyethylene was reinforced with four different wood flour content (10%, 30%, 50%, 70%). The weathering performance of WPC was determinedby the 400 h of artificial weathering test. According to the results, the color change is inevitable aslong as the wood flour is used as filler. Surprisingly, the highest color change was obtained from WPC containing 30% WF, contrary to 70% of wood flour. Similarly, the whiteness of thesurface of WPC increased with exposure time. The photooxidation resulted in the chain scission and shorter molecules, which were observed by ATR-FTIR analysis. The changes in the intensity of characteristic polymer (2914 cm-1and 2846 cm-1) and wood peaks (1510 cm-1and 1027 cm-1) exhibited the photodegradation on WPCs' surface, which resulted in color change. Moreover, the light microscopy investigation showed surface degradation. Theextensive weathering conditions causedsurface cracks and surface roughness. The visual appearance of WPCs also demonstrated how to change the surface character of WPC during the400 h of artificial weathering. In conclusion, the increase inthe wood content increased theintensity of degradation.","PeriodicalId":329192,"journal":{"name":"WOOD RESEARCH 67(4) 2022","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125776993","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}

引用次数: 0

STUDY OF WOOD ADHESIVES ON THE BONDING PROPERTIES IN SOLID AND HOLLOW GLULAM BEAMS OF PINUS RADIATA 木材胶粘剂对辐射松实心和空心胶合木梁粘结性能的影响

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.598611

Mario Núñez-Decap, Gustavo PÉREZ-SOTO, A. Opazo-Vega, Boris Moya-Rojas, Marcela Vidal-Vega

引用次数: 0

STUDY ON THE TIME-FREQUENCY CHARACTERISTICS AND PROPAGATION LAW OF ACOUSTIC EMISSION LONGITUDINAL WAVES IN WOOD GRAIN DIRECTION 木纹方向声发射纵波时频特性及传播规律研究

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.582597

Saiyin Fang, Ming Li, Tingting Deng, Kund Du

引用次数: 0

EVALUATION OF THE DECAY LEVELS OF WOODEN COMPONENTS IN ARCADE BUILDINGS IN THE ANCIENT TOWN CHIKAN VIA POLARIZED LIGHT, FLUORESCENCE AND FTIR SPECTRA 用偏振光、荧光和红外光谱评价赤坎古镇拱廊建筑木构件的腐朽程度

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.545557

Yan Yang, Xiaoqiang Zhang, Qian Xu, Peiyang Wang, Shilong Jiang, Yan Min, Wen Sun, Bin Li, Yulong Fan, Shuang Yang

{"title":"EVALUATION OF THE DECAY LEVELS OF WOODEN COMPONENTS IN ARCADE BUILDINGS IN THE ANCIENT TOWN CHIKAN VIA POLARIZED LIGHT, FLUORESCENCE AND FTIR SPECTRA","authors":"Yan Yang, Xiaoqiang Zhang, Qian Xu, Peiyang Wang, Shilong Jiang, Yan Min, Wen Sun, Bin Li, Yulong Fan, Shuang Yang","doi":"10.37763/wr.1336-4561/67.4.545557","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/67.4.545557","url":null,"abstract":"In order to classify the decay levels of Chinese fir (Cunninghamia lanceolata) wood components in arcade buildings in the ancient town Chikan and to provide basic data for future protection measures, the extent of decay of the samples was determined via polarized light, fluorescence, and Fourier-transform infrared spectroscopy. The results were as follows: (1)Thetotal birefringence brightness of crystalline cellulose and the green fluorescence brightness of the lignins were reducedto different degreesin almost all samples. (2)Theabsorption peaks at 1731 cm-1representing hemicellulose and at 891 cm-1representing cellulose in all samples disappeared. The absorption peak heights at 1370 cm-1, 1159 cm-1and 1058 cm-1which represents holocellulose,and at 1508 cm-1, 1424 cm-1, and 1262 cm-1which represents lignin decreased to varying degrees. (3)From the analysis, the decay level of wooden components in arcade buildings was divided into three classes, i.e., Level I (severe decay), Level II (moderate decay), and Level III (mild decay).","PeriodicalId":329192,"journal":{"name":"WOOD RESEARCH 67(4) 2022","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123320065","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}

引用次数: 1

A NOVEL WOOD FEATURE EXTRACTION METHOD BASED ON IMPROVED BLOCKED HIGHER-ORDER LOCAL AUTO-CORRELATION 一种基于改进分块高阶局部自相关的木材特征提取方法

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.686699

Zihao Liu, Sulan Zhang, Xiaojun Jia, Jun Yang

引用次数: 0

SHORT NOTES: FIRST REPORT OF THE LIGNIVOROUS FUNGUS PLEUROSTOMA RICHARDSIAE IN CEDRUS ATLANTICA M. IN MOROCCO 摘要:摩洛哥大西洋杉木属木质素食用菌richard pleurostoma的首次报道

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.700707

Oussama Chauiyakh, Samar Aarabi, Oumaima Ninich, E. El Fahime, F. Bentata, A. Et-tahir

引用次数: 2

EMPIRICAL ANALYSIS OF ROOF SLOPE INFLUENCE ON MATERIAL CONSUMPTION IN TIMBER HOWE-TYPE TRUSSES 屋面坡度对木构桁架材料消耗影响的实证分析

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.625635

Isabella Silva Menezes, I. F. Fraga, Matheus Henrique MORATO DE MORAES, A. Christoforo, Fernando Júnior RESENDE MASCARENHAS, Raquel SCHMITT CAVALHEIRO, F. A. Rocco Lahr, E. Chahud, Luiz Antônio Melgaço Nunes Branco, Herisson Ferreira dos Santos

引用次数: 0

VARIABILITY OF WOOD FIBRES OF MATURE PEDUNCULATE OAK IN FLOODED AND NON-FLOODED AREA 水淹和非水淹地区成熟有花序栎树木材纤维的变异

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.533544

D. Jokanović, T. Ćirković-Mitrović, Vesna Nikolić Jokanović, R. Lozjanin

{"title":"VARIABILITY OF WOOD FIBRES OF MATURE PEDUNCULATE OAK IN FLOODED AND NON-FLOODED AREA","authors":"D. Jokanović, T. Ćirković-Mitrović, Vesna Nikolić Jokanović, R. Lozjanin","doi":"10.37763/wr.1336-4561/67.4.533544","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/67.4.533544","url":null,"abstract":"The paper deals with anatomical characteristics of wood fibres of Quercus robur L. Fiber length, double-cell wall thickness and fiber lumen diameter were analysed from samples in flooded and non-flooded area along Sava river in Serbia. All anatomical elements were measured from pith to bark in order to establish variation with cambial age, not only between researched sites, but also between individuals within each locality. In this study, there was no statistically significant difference only for mean values of fiber length between individual trees at non-flooded area, and in fiber lumen diameter at flooded area. Increasing of mean values of observed anatomical parameters with cambial age is valid for flooded area (MU „Grabovako-vitojevačko ostrvo 20e“), while for another locality (MU “Blata-Malovanci”) it is the case just for double-cell wall thickness. Mean values of all analysed anatomical elements are bigger in flooded area and this could be a consequence of more suitable ecological conditions for Quercus roburL. development present in this locality. Obtained variations show nonhomogeneous wood fibre features at both localities.","PeriodicalId":329192,"journal":{"name":"WOOD RESEARCH 67(4) 2022","volume":"517 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116541123","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}

引用次数: 0

IDENTIFICATION OF THE CELL WALL SYNTHESIS GENES IN BETULA PENDULA 钟柏细胞壁合成基因的鉴定

WOOD RESEARCH 67(4) 2022 Pub Date : 2022-08-11 DOI: 10.37763/wr.1336-4561/67.4.519532

Song Chen, Xiyang Zhao, Suting Chen

引用次数: 2