WOOD RESEARCH 66(4) 2021最新文献_第2页

AGRO-FORESTRY RESIDUES VALORIZATION BY LIGNINOSOME OF GRIFOLA FRONDOSA 灰树花木质素体对农林残余物的增值作用

WOOD RESEARCH 66(4) 2021 Pub Date : 2021-09-09 DOI: 10.37763/wr.1336-4561/66.4.657665

Milica Galić, ‪JASMINA Ćilerdžić, J. Vukojevic, M. Stajić

引用次数: 3

THE BRIQUETTES PROPERTIES FROM SEED SUNFLOWER HUSK AND WOOD LARCH SHAVINGS 种子、向日葵皮和落叶松屑的压块特性

WOOD RESEARCH 66(4) 2021 Pub Date : 2021-09-09 DOI: 10.37763/wr.1336-4561/66.4.689699

Drăguşanu Veronica, A. Lunguleasa, Spirchez Cosmin

引用次数: 0

TRACE ELEMENT ANALYSIS OF TROPICAL WOODS USING PARTICLE INDUCED X–RAY EMISSION (PIXE) METHODS FROM WESTERN NIGERIA 用粒子诱导x射线发射(pixe)方法分析尼日利亚西部热带木材的微量元素

WOOD RESEARCH 66(4) 2021 Pub Date : 2021-09-09 DOI: 10.37763/wr.1336-4561/66.4.595605

Onumejor CHARITY ADAEZE, Balogun FATAI AKINTUNDE, S. T. Gbenu, Mojisola Rachael Usikalu, Theophilus Aanuoluwa Adagunodo, Akinwumi Akinpelu, Justina Ada Achuka, Theophilus EMUOBOR ARIJAJE

{"title":"TRACE ELEMENT ANALYSIS OF TROPICAL WOODS USING PARTICLE INDUCED X–RAY EMISSION (PIXE) METHODS FROM WESTERN NIGERIA","authors":"Onumejor CHARITY ADAEZE, Balogun FATAI AKINTUNDE, S. T. Gbenu, Mojisola Rachael Usikalu, Theophilus Aanuoluwa Adagunodo, Akinwumi Akinpelu, Justina Ada Achuka, Theophilus EMUOBOR ARIJAJE","doi":"10.37763/wr.1336-4561/66.4.595605","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/66.4.595605","url":null,"abstract":"Trace element investigation and its corresponding concentration level in selected tropical woods from western Nigeria was done using PIXE-particle induced X-ray emission methods. Fifteen selected tropical woods were analyzed and twenty-seventrace elements were identified and quantified. The identified trace elements are Na,Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Se, Br, Rb, Sr, Y, Zr, Ba, Pb and Bi. Calcium concentration were2835, 3195, 4923, 5608, 7770, 5110, 2743, 5092 and 3451ppm in samples 2, 5, 6, 10, 11, 12, 13, 14 and 15, respectively. Potassium recorded2838, 4811, 3184, and 2021ppm in samples 1, 3, 8 and 9, respectively. Silicon recorded5206ppm for sample 4 and 5253ppm for sample 7. Calcium and potassium were observed to have concentration level that is greater than 1000ppm in all the studied samples, hence it can be said that calcium and potassium are major trace element of wood. The concentrations of the elements identified have no immediate health concern on environment and human, therefore the studied tropical woodssafe for use as fuel and other purposes.","PeriodicalId":23619,"journal":{"name":"WOOD RESEARCH 66(4) 2021","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81300685","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

EFFECTS OF STAND DENSITY ON TURPENTINE TERPENE COMPONENTS AND RESIN DUCT MORPHOLOGICAL STRUCTURE OF PINUS MASSONIANA 林分密度对马尾松松节油萜类成分及树脂管形态结构的影响

WOOD RESEARCH 66(4) 2021 Pub Date : 2021-09-09 DOI: 10.37763/wr.1336-4561/66.4.643656

Jian-hua Lyu, Cheng Guan, Xianwei Li, Ming Chen

{"title":"EFFECTS OF STAND DENSITY ON TURPENTINE TERPENE COMPONENTS AND RESIN DUCT MORPHOLOGICAL STRUCTURE OF PINUS MASSONIANA","authors":"Jian-hua Lyu, Cheng Guan, Xianwei Li, Ming Chen","doi":"10.37763/wr.1336-4561/66.4.643656","DOIUrl":"https://doi.org/10.37763/wr.1336-4561/66.4.643656","url":null,"abstract":"The influence of stand density on the resin duct morphological structure and terpene components of Pinus massonianawere studied. The resin duct morphological characteristics and the relative content of the terpene components were investigated by microscopyand gas chromatography-mass spectroscopy, respectively. The experimental results revealed that there was a specific correlation between thestand density andresin duct area, resin duct diameter, and the relative contents of main terpene components in the turpentine extracts. Additionally, the relative contents of β-pinene and (+)-camphene were positively correlated with stand density, with correlation coefficients of 0.8208and 0.5539, respectively.In contrast, the relative contents of(+)-longifolene and (+)-longicyclene were negatively correlated with stand density, with correlation coefficients of -0.5750and -0.7726, respectively, andα-pinene, β-caryophyllene, and (+)-α-longipinene had no correlation with stand density. The relative content of (+)-α-pinene was negatively correlated with the relative contents of both (+)-longifolene and (+)-longicyclene,with correlation coefficients of-0.8770 and -0.8914, respectively. There were positive correlations between the relative contents of (+)-longifolene and (+)-longicyclenewith correlation coefficient of0.9718, (+)-longifolene and (+)-α-longipinenewith correlation coefficient of0.8399,β-caryophyllene and (+)-α-longipinenewith correlation coefficient of0.9360, and (+)-longicyclene and (+)-α-longipinenewith correlation coefficient of0.8626.","PeriodicalId":23619,"journal":{"name":"WOOD RESEARCH 66(4) 2021","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73790153","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

STUDY ON PROPAGATION LAW OF ACOUSTIC EMISSION SIGNALS ON ANISOTROPIC WOOD SURFACE 声发射信号在各向异性木材表面的传播规律研究

WOOD RESEARCH 66(4) 2021 Pub Date : 2021-09-09 DOI: 10.37763/wr.1336-4561/66.4.517527

Tingting Deng, Shuang Ju, Minghua Wang, Ming Li

引用次数: 1