木材

The timber dry is an important technique measure that reasonable make use of the timber, economy timber, is a timber to process an indispensable and important work preface in production inside.

木材干燥是合理利用木材、节约木材的重要技术措施，是木材加工生产中一道不可缺少的重要工序。

In chapter 5, the concept of zero-span tension known in papermaking area is for the first time introduce to wood science area to explore in-tree variation of longitudinal tensile strength of tracheids and its main influencing factors. In chapter 6, composite micromechanics and classic laminated theory are used to make a comprehensive and detailed analysis of the main influencing factors of mechanical properties of tracheids cell wall. Some experimental results acquired in the foregoing chapters are explained successfully. Results were summarized as follows: Mechanical characteristics of wood at micron scale: 1 At micron scale, the longitudinal mechanicai behavior of wood microtome section differs greatly from that of wood with normal size.

论文的第2章首先研究了微米尺度下木材的力学特性，为后面运用木材微切片拉伸技术奠定一定的理论基础；在第3章，首次考虑到了微米尺度下木材力学性质的尺寸效应，并运用木材微切片正常间距拉伸技术研究了管胞纵向弹性模量的株内变异规律；在第4章，首次利用纳米压痕技术中最新发展起来的连续刚度测量法直接在管胞细胞壁上进行纳米级的压痕实验，测量次生壁S〓层的纵横向弹性模量和硬度，从而把细胞壁力学的研究提高到一个更高的水平；在第5章，首次把造纸领域的零距拉伸技术引入木材科学研究领域，研究了管胞纵向抗拉强度的株内变异规律及其主要影响因素；第6章则运用复合材料细观力学的基本理论和经典层板理论对影响细胞壁力学性能的主要因素进行了全面而系统的分析，并为前几章的一些实验结果提供理论上的解释。

The journal well informs the research advances of the chemistry of wood, wood components and wood products to chemists, pharmaceutist, biological scientists and wood and paper technologists, including the chemistry of pulping, lignin, cellulose, hemicellulose, extractives chemistry, wood and bark chemicals and biomass conversion or utilization etc.

该杂志为化学家，药剂师，生物科学家以及木材与纸张技术专家全面提供了木材化学，木材成分以及木材产品的研究进展，包括纸浆化学，木质素，纤维素，半纤维素，提取物化学，木材与树皮化学制品以及生物的数量转换或利用等等。

To clarify the interaction between wood primary components based on a molecular level, and to obtain the change information of bonding form between molecules in different soften or decrystallized wood, can not only provide theoretical basis for decrystallization, chemical improvement of wood and wood bending, but also can offer technical parameters for new approach and ways of wood processing and integrated utilize, at the same time can also enrich the wood rheology theory.

为了在分子水平上弄清楚木材主成分之间的相互作用关系，以及获得不同塑化处理后，木材在应变条件下内部分子结合形式的变化信息，不仅能为木材的非晶化、化学改性、弯曲部件成型等奠定理论基础，还能为木材加工、综合利用等开辟新的途径和方法提供技术参数，同时还能丰富木材流变学理论。

To clarify the interaction between wood primary components based on a molecular level, and to obtain the change information of bonding form between molecules in different soften or decrystallized wood, can not only provide theoretical basis for decrystallization, chemical improvement of wood and wood bending, but also can offer technical parameters for new approach and ways of wood processing and integrated utilize, at the same time can also enrich the wood rheology theory.

摘 要：为了在分子水平上弄清楚木材主成分之间的相互作用关系，以及获得不同塑化处理后，木材在应变条件下内部分子结合形式的变化信息，不仅能为木材的非晶化、化学改性、弯曲部件成型等奠定理论基础，还能为木材加工、综合利用等开辟新的途径和方法提供技术参数，同时还能丰富木材流变学理论。

The lumber is dry is in fact through the change lumber 干燥窑 intemperature, the humidity controls the lumber drying in transit thelumber moisture content, causes the lumber moisture content accordingto certain technological requirement slow reducing, guarantees to thedifferent 材种 dry quality requirement.

木材干燥实际上是通过改变木材干燥窑内的温度、湿度来控制木材干燥过程的木材含水率，使的木材含水率按一定的工艺要求缓慢的降低，以保证对不同材种的干燥质量要求。

The moisture of lumber is practically controlled by changing the temperature humidity in the lumber kiln that influences drying quality of the lumber directly.

木材干燥技术是一项包含有多种不定因素的复杂过程。木材干燥实际上是通过改变木材干燥窑内的温度、湿度来控制木材干燥过程的木材含水率。

In this paper, the type of paulownia stain is identified, and on the basis of it, the study is carried out on the reasons of paulownia wood stain, way, law, and the research is also on tend of the change of wood components during the process of stain, the probe provide the theoretical evidence for paulownia wood stain control.

本文主要对泡桐木材变色类型进行鉴别测定，同时在此基础上，深入研究了泡桐木材变色原因、变色历程、变色规律，并揭示了泡桐木材变色过程中木材成分变化趋势，为泡桐木材变色防治提供了理论依据。

The fractal theory was used to build fractal microfibril in wood cell wall,and fractal dimension of fractal microfibril layer S1 and layer S2 were calculates,then wood fiber frame with nanometer scale was pointed out.

利用分形理论构建了木材细胞壁中的分形木质纤维，并计算了分形木质纤维 S1层和S2层的扭曲分形维数，指出木材中具有纳米尺度的纤维结构；同时，以木材液化和纳米纺丝技术为基础，提出了木材苯酚液化产物制备碳素纤维材料的构思和技术路线，为解决木材纳米、微米材料的制备提出了新思路。

Illegal logging costs timber-producing countries 7 billion euros ($10 billion) a year in stolen wood, lost taxes and lower prices for legally-sourced products, the World Bank estimates.

世界银行估计非法采伐木材致使那些木材生产国每年的损失都高达70亿欧元（折合100亿美元），这些损失主要包括非法采伐木材的价值、流失的税收、以及非法采伐木材冲击合法木材的价格体系等方面。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。