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木材 4

超疏水 3

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开放的复杂巨系统 2

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Transcriptome resources and genome-wide marker development for Japanese larch (

Wanfeng LI,Suying HAN,Liwang QI,Shougong ZHANG

《农业科学与工程前沿（英文）》 2014年第1卷第1期页码 77-84 doi: 10.15302/J-FASE-2014010

摘要： While the differential responses of trees to changes in climatic and environmental conditions have been demonstrated as they age, the underlying mechanisms and age control of tree growth and development are complex and poorly understood particularly at a molecular level. In this paper, we present a transcriptome analysis of , a deciduous conifer that is widely-grown in the northern hemisphere and of significant ecological and economic value. Using high-throughput RNA sequencing, we obtained about 26 million reads from the stems of 1-, 2-, 5-, 10-, 25- and 50-year-old trees. Combining these with the published Roche 454 sequencing reads and the expressed sequence tags (both mainly from embryogenic cell cultures), we assembled 26670549 reads into 146786 transcripts, of which we annotated 79182 to support investigations of the molecular basis of tree aging and adaption, somatic embryogenesis and wood formation. Using these sequences we also identified many single-nucleotide polymorphisms, simple sequence repeats, and insertion and deletion markers to assist breeding and genetic diversity studies of .

关键词： Larix transcriptome age wood formation somatic embryogenesis molecular marker

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Effect of wood dust type on mechanical properties, wear behavior, biodegradability, and resistance tonatural weathering of wood-plastic composites

Sawan KUMAR, Ajitanshu VEDRTNAM, S. J. PAWAR

《结构与土木工程前沿（英文）》 2019年第13卷第6期页码 1446-1462 doi: 10.1007/s11709-019-0568-9

摘要： The present work reports the inclusion of different proportions of Mango/Sheesham/Mahogany/Babool dust to polypropylene for improving mechanical, wear behavior and biodegradability of wood-plastic composite (WPC). The wood dust (10%, 15%, 20% by weight) was mixed with polypropylene granules and WPCs were prepared using an injection molding technique. The mechanical, wear, and morphological characterizations of fabricated WPCs were carried out using standard ASTM methods, pin on disk apparatus, and scanning electron microscopy (SEM), respectively. Further, the biodegradability and resistance to natural weathering of WPCs were evaluated following ASTM D5338-11 and ASTM D1435-99, respectively. The WPCs consisting of Babool and Sheesham dust were having superior mechanical properties whereas the WPCs consisting of Mango and Mahogany were more wear resistant. It was found that increasing wood powder proportion results in higher Young’s modulus, lesser wear rate, and decreased stress at break. The WPCs made of Sheesham dust were least biodegradable. It was noticed that the biodegradability corresponds with resistance to natural weathering; more biodegradable WPCs were having the lesser resistance to natural weathering.

关键词： wood-plastic composites mechanical testing wear biodegradability injection molding weathering

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Biodegradable, superhydrophobic walnut wood membrane for the separation of oil/water mixtures

《化学科学与工程前沿（英文）》 2022年第16卷第9期页码 1377-1386 doi: 10.1007/s11705-022-2157-z

摘要： The preparation of environmentally friendly oil/water separation materials remains a great challenge. Freeze-drying of wood after lignin removal yields wood aerogels, which can be used as substrates to prepare fluorine-free environmentally friendly superhydrophobic materials, However, they are more suitable for absorption rather than filtration applications due to their poor strength. A study using cross-sections of pristine wood chips as substrates retains the original strength of wood, but the use of the cross-sectional of wood pieces limits their thickness, strength, and size. In this paper, a degradable fluorine-free superhydrophobic film (max. water contact angle of approximately 164.2°) with self-cleaning and abrasion resistance characteristics was prepared by a one-step method using pristine and activated walnut longitudinal section films as the substrate, with tetraethyl orthosilicate as a precursor and dodecyltriethoxysilane as a modifier. The tensile strength results show that superhydrophobic films with pristine or activated wood substrates maintained the strength of pristine wood and were 2.2 times stronger than the wood aerogel substrate. In addition, after cross-laminating the two samples, the films had the ability to separate oil and water by continuous filtration with high efficiency (98.5%) and flux (approximately 1.3 × 10³ L∙m^‒2∙h^‒1). The method has potential for the large-scale fabrication of degradable superhydrophobic filtration separation membranes.

关键词： wood nanotechnology superhydrophobic biodegradable surface modification oil/water separation

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Sustainable wood-based nanotechnologies for photocatalytic degradation of organic contaminants in aquatic

《环境科学与工程前沿（英文）》 2021年第15卷第4期 doi: 10.1007/s11783-020-1346-6

摘要：

•Wood and its reassemblies are ideal substrates to develop novel photocatalysts.

关键词： Wood Nanocatalysts Photodegradation Organic contaminants Composites

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Polyaniline‒polypyrrole nanocomposites using a green and porous wood as support for supercapacitors

Jian LI, Yue JIAO

《农业科学与工程前沿（英文）》 2019年第6卷第2期页码 137-143 doi: 10.15302/J-FASE-2019257

摘要：

Wood is an ideal type of support material whose porous structure and surface functional groups are beneficial for deposition of various guest substances for different applications. In this paper, wood is employed as a porous support, combined with two kinds of conductive polymers (i.e., polyaniline (PANI) and polypyrrole (PPy)) using an easy and fast liquid polymerization method. Scanning electron microscope observations indicate that the PANI‒PPy complex consists of nanoparticles with a size of ~20 nm. The interactions between oxygen-containing groups in the wood and the nitrogen composition of PANI‒PPy were verified by Fourier transform infrared spectroscopy. The self-supported PANI‒PPy/wood composite is capable of acting as a free-standing supercapacitor electrode, which delivers a high gravimetric specific capacitance of 360 F·g at 0.2 A·g .

关键词： wood polypyrrole polyaniline supercapacitors nanocomposites

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Gripping mechanisms in current wood harvesting machines

D. GOUBET, J. C. FAUROUX, G. GOGU

《机械工程前沿（英文）》 2013年第8卷第1期页码 42-61 doi: 10.1007/s11465-013-0358-3

摘要：

This paper focuses on the structural synthesis of gripping mechanisms used in the mechanization of the harvesting process. The importance of the gripping function in current devices like harvesting heads is underlined. This function is performed with several typical mechanisms which are listed and described in this article. This study distinguishes two kinds of planar gripping mechanisms mainly used in opening and closing the rollers: five concentric and two lateral ones. Both kinds have advantages and drawbacks. So a third kind of hybrid mechanism has been designed in order to orientate the axis of the rollers during gripping motion in order to combine concentric and lateral gripping advantages. Two planar and one spatial existing mechanisms are described. The last part of this paper presents a structural synthesis of such a spatial parallel mechanism by using the structural parameters and the general formulae established by the third author. Nine kinematic diagrams of spatial parallel mechanisms are provided.

关键词： structural synthesis parallel mechanisms gripping mechanisms wood harvesting harvesting head

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Correction to: Effect of wood dust type on mechanical properties, wear behavior, biodegradability, andresistance to natural weathering of wood-plastic composites

《结构与土木工程前沿（英文）》 2021年第15卷第4期页码 1071-1071 doi: 10.1007/s11709-021-0736-6

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Experimental analysis on strength and failure modes of wood beam-column connections

Zhenhua HUANG,Sheldon Q SHI,Liping CAI

《结构与土木工程前沿（英文）》 2014年第8卷第3期页码 260-269 doi: 10.1007/s11709-014-0261-y

摘要： This research experimentally examined the strength, failure modes, and behaviors of dowel-bearing and fiber-bearing wood beam-column connections and explored the effects of cyclic loading on the strength, failure modes, and behaviors of those connections. Base on limited numbers of exploratory laboratory tests (6 preliminary tests in total), the authors observed that the typical bolted connection (dowel-bearing type wood beam-column connection with fiber-bearing surfaces) showed good behavior (large peak moment) under the monotonic loads, and the tenon joint connection (fiber-bearing wood beam-column connection) showed good behavior under cyclic loads. The cyclic property of loading reduced the strength of the dowel-bearing type wood beam-column connections, but increased the strength of fiber-bearing type wood beam-column connections. More importantly, the authors identified a possible location of safety concern in current national design specifications (NDS) standards for the typical bolted connection (dowel-bearing connection with fiber bearing surface) under cyclic loading because the tested value was smaller than the NDS calculated value. But, because of the small amount of tests conducted, no final conclusion can be drawn based on those preliminary observations yet. A large number of repetitive laboratory tests should be conducted.

关键词： wood connection dowel-bearing fiber-bearing

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Chao SUN, Meng LAI, Shougong ZHANG, Xiaomei SUN

《农业科学与工程前沿（英文）》 2017年第4卷第4期页码 482-492 doi: 10.15302/J-FASE-2017184

摘要： Wood properties are important traits that determine quality of structural wood. With the aim of performing efficient early selection for wood properties, we investigated genetic variation in 20 clones aged from 4 to 15 years for four quality traits: wood density, wall thickness to lumen area, microfibrillar angle (MFA) and modulus of elasticity (MOE). We observed that age-related trends in overall means varied for different traits: MFA decreased with the age, while the others generally increased with the age. Phenotypic variance always showed significant differences from the age of 8 years onward, with CVG ranging from 4% to 25%. Also, clonal repeatability increased steadily until 9 years old and then kept medium or higher intensity (0.4–0.8). After the age of 6, genetic correlations were generally higher than phenotypic correlations. Estimates of early selection efficiency suggested that the optimal selection age for wood density was at age 5–6 years, while it was 9–10 years for the other traits. In combination with previous results, we proposed a comprehensive early selection strategy for larch clonal breeding that involved selection based on nursery rooting ability, phenology, growth traits, and wood properties.

关键词： early selection genetic variation wood properties SilviScan Larix kaempferi

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SIMULATION OF O-BLOWN CO-GASIFICATION OF WOOD CHIP AND POTATO PEEL FOR PRODUCING SYNGAS

《农业科学与工程前沿（英文）》 doi: 10.15302/J-FASE-2023490

摘要：

● Low-value biowaste including wood chip and potato peel was valorized to syngas.

关键词： Aspen Plus co-gasification potato peel syngas simulation waste reduction wood chip

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Full scale amendment of a contaminated wood impregnation site with iron water treatment residues

Sanne Skov NIELSEN, Peter KJELDSEN, Rasmus JAKOBSEN

《环境科学与工程前沿（英文）》 2016年第10卷第4期 doi: 10.1007/s11783-016-0842-1

摘要： Iron water treatment residues are a free by-product with high concentration of iron oxides Iron water treatment residues has a large potential for arsenic sorption Soils are highly contaminated by arsenic at wood preservation sites Iron water treatment residues were added to hot spots contaminated with arsenic The addition led to significant decrease in leaching of arsenic from the contaminated soil Iron water treatment residues (Fe-WTR) are a free by-product of the treatment of drinking water with high concentration of iron oxides and potential for arsenic sorption. This paper aims at applying Fe-WTR to a contaminated site, measuring the reduction in contaminant leaching, and discussing the design of delivery and mixing strategy for soil stabilization at field scale and present a cost-effective method of soil mixing by common contractor machinery. Soil contaminated by As, Cr, and Cu at an abandoned wood impregnation site was amended with 0.22% (dw) Fe-WTR. To evaluate the full scale amendment a 100 m test site and a control site (without amendment) were monitored for 14 months. Also soil analysis of Fe to evaluate the degree of soil and Fe-WTR mixing was done. Stabilization with Fe-WTR had a significant effect on leachable contaminants, reducing pore water As by 93%, Cu by 91% and Cr by 95% in the upper samplers. Dosage and mixing of Fe-WTR in the soil proved to be difficult in the deeper part of the field, and pore water concentrations of arsenic was generally higher. Despite water logged conditions no increase in dissolved iron or arsenic was observed in the amended soil. Our field scale amendment of contaminated soil was overall successful in decreasing leaching of As, Cr and Cu. With minor improvements in the mixing and delivery strategy, this stabilization method is suggested for use in cases, where leaching of Cu, Cr and As constitutes a risk for groundwater and freshwater.

关键词： Field experiment Iron oxide Arsenic Stabilization Wood preservation sites

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大自然给予的启发——木材仿生科学刍议

李坚,孙庆丰

《中国工程科学》 2014年第16卷第4期页码 4-12

摘要：

本文有针对性地列举了自然界某些生物体所固有的智能行为和独特的自然属性；由自然现象给予的启发，阐述了构建木材仿生科学的理论基础；提出了依据生物学原理和现代技术，赋予木材奇异功能或创生新型复合材料的发展空间。

关键词：木材仿生科学超疏水气凝胶智能界面

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溶胶-凝胶原位生长制备超疏水木材

梁金,吴义强,刘明

《中国工程科学》 2014年第16卷第4期页码 87-91

摘要：

采用溶胶-凝胶原位生长的方法制备超疏水木材，在木材表面形成一层纳米结构超疏水薄膜，水滴在木材表面接触角达到150.6°。采用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、傅立叶变换红外光谱仪（FTIR）分别对超疏水木材样品的物相组成、表面形貌及表面化学官能团进行检测，分析表明木材的超疏水性是表面纳米级突起粗糙结构和乙烯基疏水基团共同作用的结果。

关键词：木材超疏水溶胶-凝胶纳米

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木块在小尺寸轰燃实验中的点燃及预测模型

季经纬,宋虎,杨立中,范维澄

《中国工程科学》 2003年第5卷第7期页码 62-66

摘要：

利用小尺寸轰燃实验台对松木和杉木的点燃性能进行了研究。该实验台能够提供接近实际火灾的燃烧环境，实验具有较好的可重复性。在锥形量热计实验的基础上提出了一种新的材料热辐射引燃判据。采用实验测得的轰燃实验台上层热烟气温度的平均值，结合热辐射引燃判据计算了木材在轰燃实验台中的点燃情况。

关键词：轰燃木材点燃

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超疏水SiO2/PS 薄膜于木材表面的构建

张明,王成毓

《中国工程科学》 2014年第16卷第4期页码 83-86

摘要：

通过溶胶-凝胶法一步合成疏水性且具备独特形貌的二氧化硅粒子，联合聚苯乙烯以滴涂的方式于木材表面仿生合成了稳定性超疏水薄膜。经处理后的木材表面与水的静态接触角为153°，滚动角小于5°。通过扫描电子显微镜照片观察到该复合涂层拥有微米/亚微米的二维等级粗糙结构，该结构协同低表面能物质共同决定超疏水性木材的成功制得。此外，进一步研究了超疏水性木材表面的稳定性和耐久性。结果表明，该超疏水性木材于水、腐蚀性液体（酸液/碱液）、常见有机溶剂中以及一些常见条件下仍保留超疏水特性，为未来木材材料的应用领域扩展提供了有利条件。

关键词：超疏水木材表面滴涂法复合薄膜

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标题作者时间类型操作

Transcriptome resources and genome-wide marker development for Japanese larch (

Wanfeng LI,Suying HAN,Liwang QI,Shougong ZHANG

期刊论文

Effect of wood dust type on mechanical properties, wear behavior, biodegradability, and resistance tonatural weathering of wood-plastic composites

Sawan KUMAR, Ajitanshu VEDRTNAM, S. J. PAWAR

期刊论文

Biodegradable, superhydrophobic walnut wood membrane for the separation of oil/water mixtures

期刊论文

Sustainable wood-based nanotechnologies for photocatalytic degradation of organic contaminants in aquatic

期刊论文

Polyaniline‒polypyrrole nanocomposites using a green and porous wood as support for supercapacitors

Jian LI, Yue JIAO

期刊论文

Gripping mechanisms in current wood harvesting machines

D. GOUBET, J. C. FAUROUX, G. GOGU

期刊论文

Correction to: Effect of wood dust type on mechanical properties, wear behavior, biodegradability, andresistance to natural weathering of wood-plastic composites

期刊论文

Experimental analysis on strength and failure modes of wood beam-column connections

Zhenhua HUANG,Sheldon Q SHI,Liping CAI

期刊论文

Age-related trends in genetic parameters for wood properties in

Chao SUN, Meng LAI, Shougong ZHANG, Xiaomei SUN

期刊论文

SIMULATION OF O-BLOWN CO-GASIFICATION OF WOOD CHIP AND POTATO PEEL FOR PRODUCING SYNGAS

期刊论文

Full scale amendment of a contaminated wood impregnation site with iron water treatment residues

Sanne Skov NIELSEN, Peter KJELDSEN, Rasmus JAKOBSEN

期刊论文