Journal of the Korean wood science and technology最新文献_第6页

Effects of Precipitation pH of Black Liquor on Characteristics of Precipitated and Acetone-Fractionated Kraft Lignin 黑液沉淀pH值对沉淀和丙酮分级硫酸盐木质素特性的影响

Journal of the Korean wood science and technology Pub Date : 2023-01-01 DOI: 10.5658/wood.2023.51.1.38

Ega Cyntia Watumlawar, Byung‐Dae Park

引用次数: 1

Flexural Modulus of Larch Boards Laminated by Adhesives with Reinforcing Material 带增强材料的胶粘剂层合落叶松板的弯曲模量

Journal of the Korean wood science and technology Pub Date : 2023-01-01 DOI: 10.5658/wood.2023.51.1.14

Injeong Lee, W. Oh

引用次数: 1

Characteristics of Magnetic Sengon Wood Impregnated with Nano Fe3O4 and Furfuryl Alcohol 纳米Fe3O4和糠醇浸渍磁性软木的特性

Journal of the Korean wood science and technology Pub Date : 2023-01-01 DOI: 10.5658/wood.2023.51.1.1

Gilang Dwi Laksono, I. Rahayu, L. Karlinasari, W. Darmawan, E. Prihatini

引用次数: 1

Characteristics of Bio Pellets from Spent Coffee Grounds and Pinewood Charcoal Based on Composition and Grinding Method 基于成分和研磨法的废咖啡渣和松木炭生物颗粒特性研究

Journal of the Korean wood science and technology Pub Date : 2023-01-01 DOI: 10.5658/wood.2023.51.1.23

Nopia Cahyani, A. Yunianti, Suhasman, K. T. P. Pangestu, G. Pari

{"title":"Characteristics of Bio Pellets from Spent Coffee Grounds and Pinewood\u0000 Charcoal Based on Composition and Grinding Method","authors":"Nopia Cahyani, A. Yunianti, Suhasman, K. T. P. Pangestu, G. Pari","doi":"10.5658/wood.2023.51.1.23","DOIUrl":"https://doi.org/10.5658/wood.2023.51.1.23","url":null,"abstract":"One type of biomass that has promising potential for bio pellet production is spent coffee grounds (SCGs). However, previous studies have shown that SCGs in bio pellets cause a lot of smoke. Therefore, they need to be mixed with a material that has a higher calorific value to produce better quality pellets. One material that can be used is pine wood because it has a natural resin content that can increase the calorific value. The aim of this study was to examine the quality of bio pellets produced with SCGs and pine wood charcoal at different particle sizes. The charcoal was ground using either a hammer mill (HM) or a ball mill (BM). Pine wood charcoal was mixed with SCGs at ratios of SCGs to pine wood charcoal of 4:6 and 6:4 by weight, respectively, and the adhesive used a tapioca with a composition ratio 5% of the raw material. The bio pellets were produced using a manual pellet press. The quality of the bio pellets was assessed based on Indonesian National Standard (SNI) 8021-2014, and the physical observations include flame length, burning rate, and compressive strength. The average water content, ash content, and calorific value of the bio pellets were in accordance with SNI 8021-2014, but the density and ash content values were below the standard values. The BM variation of bio pellets had a higher compressive strength than the HM variation, and the 4:6 BM variation had the longest burning time compared with 4:6 HM.","PeriodicalId":17357,"journal":{"name":"Journal of the Korean wood science and technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43666164","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: 3

Lateral Resistance of Reinforced Light-Frame Wood Shear Walls 钢筋轻框架木结构剪力墙的横向阻力

Journal of the Korean wood science and technology Pub Date : 2023-01-01 DOI: 10.5658/wood.2023.51.1.58

Hyung Woo Lee, S. Jang

{"title":"Lateral Resistance of Reinforced Light-Frame Wood Shear\u0000 Walls","authors":"Hyung Woo Lee, S. Jang","doi":"10.5658/wood.2023.51.1.58","DOIUrl":"https://doi.org/10.5658/wood.2023.51.1.58","url":null,"abstract":"In light-frame timber construction, the shear wall is one of the most important components that provide resistance to lateral loads such as earthquakes or winds. According to KDS (Korea Design Standard) 42 50 10, shear walls are to be constructed using wood-based structural sheathing, with studs connected by 8d nails spaced 150 mm along the edge and 300 mm in the field. Even though small-scale residential timber building can be designed to exhibit seismic resistance using light-frame timber shear walls in accordance with KDS 42 50 10, only the abovementioned standard type of timber shear wall is available. Therefore, more types of timber shear walls composed of various materials should be tested to measure their seismic resistance, and the results should be incorporated into the future revision of KDS 42 50 10. In this study, the seismic resistance of shear walls composed of structural timber studs and wood-based structural sheathing with reinforced nailing is tested to evaluate the effects of the reinforcement. For the nailing reinforcement, shear wall specimens are constructed by applying nail spacings of 75–150 mm and 50–100 mm. For the shear wall specimens with one sheathing and reinforced nailing, the shear strengths are 1.7–2.0 times higher than that of the standard shear wall (nail spacing of 150–300 mm). The shear strength of the shear walls with sheathing on both sides is 2.0–2.7 times higher than that of the standard shear wall.","PeriodicalId":17357,"journal":{"name":"Journal of the Korean wood science and technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42278960","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: 2

Reliability of the Impregnated Boron Compounds, Citric Acid- and Heat-Treated Samama (Anthocephalus macrophyllus) Wood against the Fungal and Termite Attacks 浸渍硼化合物、柠檬酸和热处理的大叶花木材抵抗真菌和白蚁攻击的可靠性

Journal of the Korean wood science and technology Pub Date : 2023-01-01 DOI: 10.5658/wood.2023.51.1.49

T. Priadi, Guruh Sukarno Putra, T. Cahyono

引用次数: 2

Preference of Subterranean Termites among Community Timber Species in Bogor, Indonesia 印尼茂物群落木材物种对地下白蚁的偏好

Journal of the Korean wood science and technology Pub Date : 2022-11-01 DOI: 10.5658/wood.2022.50.6.458

A. Arinana, M. Rahman, Rachel E.G. Silaban, S. Himmi, D. Nandika

{"title":"Preference of Subterranean Termites among Community Timber Species in\u0000 Bogor, Indonesia","authors":"A. Arinana, M. Rahman, Rachel E.G. Silaban, S. Himmi, D. Nandika","doi":"10.5658/wood.2022.50.6.458","DOIUrl":"https://doi.org/10.5658/wood.2022.50.6.458","url":null,"abstract":"Many methods have been explored to increase the palatability of pine ( Pinus merkusii ), the most common wood used for termite baiting. However, because of the undersupply of pine in Indonesia, it is crucial to vary the wood species for termite baiting and look for potential alternatives. Furthermore, various studies have shown that baiting time influences the intensity and pattern of termite attacks. Therefore, the present research aimed to study the preferences of subterranean termites and find the ideal baiting time among community wood species from Bogor, West Java, as a baiting alternative to pine. The woods tested were Acacia mangium (acacia), Falcataria moluccana (sengon), Anthocephalus cadamba (jabon), Maesopsis eminii (manii), Swietenia mahagoni (mahogany), Hevea brasiliensis (rubberwood), and P. merkusii (pine). Field tests were carried out based on the American Society for Testing and Materials D 1758-06 at the Arboretum, Faculty of Forestry and Environment, IPB University, with a baiting time of one to six months. The results led to the identification of four species of termites, namely Microtermes sp., Macrotermes sp., Shedorhinotermes sp., and Capritermes sp.. The frequency of termite attacks on the test site reached 93.1%. Rubberwood was the most potential wood bait for subterranean termites, indicated by the highest average weight loss value (65.8%) with a shorter optimal baiting time (up to one month) than that of other tested woods.","PeriodicalId":17357,"journal":{"name":"Journal of the Korean wood science and technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49504222","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: 2

Investigation on the Awareness and Preference for Wood Culture to Promote the Values of Wood: III. Living Environment and Trend of Wood Utilization 促进木材价值的木文化意识与偏好调查(三)。生活环境与木材利用趋势

Journal of the Korean wood science and technology Pub Date : 2022-11-01 DOI: 10.5658/wood.2022.50.6.375

Yeonjung Han, Myung Sun Yang, Sang-Min Lee

{"title":"Investigation on the Awareness and Preference for Wood Culture to\u0000 Promote the Values of Wood: III. Living Environment and Trend of Wood\u0000 Utilization","authors":"Yeonjung Han, Myung Sun Yang, Sang-Min Lee","doi":"10.5658/wood.2022.50.6.375","DOIUrl":"https://doi.org/10.5658/wood.2022.50.6.375","url":null,"abstract":"Improving public awareness of wood is crucial for expanding the use of wood and establishing a wood culture. In this study, the environment and trends of the public’s wood utilization were analyzed using a questionnaire survey and online text mining at a time when eco-friendly practices are gaining popularity. As a result of reducing climatic and environmental concerns and its positive physical and psychological effects, the use of wood is predicted to rise in areas intimately connected to everyday living, such as wood furniture, wooden structures, and interior materials. Nonetheless, there was a negative awareness that wood was expensive, difficult to maintain, and associated with deforestation. The correlations between wood-related search terms on major Korean portal sites were analyzed and categorized into five groups: Wooden architecture, cultural education, woodworking, wood industry, and wood policy. As a building material, wood was seen as more traditional and friendly than reinforced concrete and stone. Eighty-six percent of respondents expected to utilize wood as a building material in the future, regardless of whether the wood is domestically produced or imported. Sixty-five percent responded favorably about the effects of wood on the health of wooden home inhabitants. It is believed that both active publicity and quantifiable value analysis of human and environmental friendliness are required to increase pro-environment awareness of wood utilization.","PeriodicalId":17357,"journal":{"name":"Journal of the Korean wood science and technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70827870","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: 5

Investigation of Sound Absorption Ability of Acanthopanax senticosus Wastes 刺五加废弃物吸声性能的研究

Journal of the Korean wood science and technology Pub Date : 2022-11-01 DOI: 10.5658/wood.2022.50.6.404

E. Jang

引用次数: 5

Effect of Different Conditions of Sodium Chloride Treatment on the Characteristics of Kenaf Fiber Bundles 不同氯化钠处理条件对红麻纤维束特性的影响

Journal of the Korean wood science and technology Pub Date : 2022-11-01 DOI: 10.5658/wood.2022.50.6.392

T. Setyayunita, R. Widyorini, S. N. Marsoem, D. Irawati

{"title":"Effect of Different Conditions of Sodium Chloride Treatment on the\u0000 Characteristics of Kenaf Fiber Bundles","authors":"T. Setyayunita, R. Widyorini, S. N. Marsoem, D. Irawati","doi":"10.5658/wood.2022.50.6.392","DOIUrl":"https://doi.org/10.5658/wood.2022.50.6.392","url":null,"abstract":"Currently, composite board manufacturing using natural fibers has the potential to expand owing to environmental awareness. To produce a composite board, treatment is required to improve the mechanical and physical properties of the natural fibers. In this study, sodium chloride (NaCl) was used for the chemical treatment. However, studies on chemical treatments using NaCl are limited. This study aimed to investigate the characteristics of kenaf fibers after NaCl treatment. The NaCl treatment concentrations were 1, 3, and 5 wt.% at room temperature, with soaking durations of 1, 2, and 3 h. The tensile strength, strain, and Young’s modulus were measured to evaluate the mechanical properties of the fibers. The fiber bundle diameter, weight change owing to treatment, and contact angle were determined to analyze the effect of NaCl treatment. The kenaf fiber bundle treated with 5 wt.% NaCl for 3 h exhibited the highest tensile strength, Young’s modulus, reduction in fiber bundle diameter, weight change, and decrease in contact angle compared to those of untreated fiber bundles. The tensile properties of the fiber bundle exhibited a tendency to decrease with increasing fiber bundle diameter. Increasing the soaking duration from 1 to 2 h did not result in a significant decrease in the fiber bundle diameter or an increase in tensile strength. However, a further increase in the soaking duration from 2 to 3 h resulted in a considerable decrease in the fiber bundle diameter and an increase in the tensile strength.","PeriodicalId":17357,"journal":{"name":"Journal of the Korean wood science and technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43419741","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